diff --git a/qglview/glcamera.cpp b/qglview/glcamera.cpp
index 36308e7..84ee029 100644
--- a/qglview/glcamera.cpp
+++ b/qglview/glcamera.cpp
@@ -19,18 +19,15 @@
 #include "gltypes.h"
 #include "qglview.h"
 
-Camera * currentCamera;
-QMatrix4x4 globCameraMatrix;
-
 
 Camera::Camera() {
 	type_ = glCamera;
 	fov_ = 60.;
-	angle_limit_lower_xy = 0.;
-	angle_limit_upper_xy = 360.;
-	angles_.setY(270.);
-	depth_start = 0.1;
-	depth_end = 1000.;
+	angle_limit_lower_xy = 0.f;
+	angle_limit_upper_xy = 360.f;
+	angles_.setY(270.f);
+	depth_start = 0.1f;
+	depth_end = 1000.f;
 	mirror_x = mirror_y = false;
 }
 
@@ -38,15 +35,15 @@ Camera::Camera() {
 void Camera::anglesFromPoints() {
 	QVector3D dv = aim_ - pos_, tv;
 	tv = QVector3D(dv.x(), dv.y(), 0.);
-	angles_.setZ(atan2(tv.x(), tv.y()) * rad2deg);
-	angles_.setY(piClamp<GLdouble>(atan2(tv.length(), dv.z()) * rad2deg, angle_limit_lower_xy, angle_limit_upper_xy) + 180.);
+	angles_.setZ(atan2f(tv.x(), tv.y()) * rad2deg);
+	angles_.setY(piClamp<GLfloat>(atan2f(tv.length(), dv.z()) * rad2deg, angle_limit_lower_xy, angle_limit_upper_xy) + 180.f);
 }
 
 
-void Camera::apply(const GLdouble & aspect) {
+void Camera::apply(const GLfloat & aspect) {
 	glMatrixMode(GL_PROJECTION);
-	if (aspect <= 1.)
-		glScaled(aspect, aspect, 1.);
+	if (aspect <= 1.f)
+		glScalef(aspect, aspect, 1.f);
 	QMatrix4x4 pm = glMatrixPerspective(fov_, aspect, depth_start, depth_end);
 	//pm.perspective(fov_, aspect, depth_start, depth_end);
 	//qDebug() << pm;// << glMatrixPerspective(fov_, aspect, depth_start, depth_end);
@@ -60,13 +57,10 @@ void Camera::apply(const GLdouble & aspect) {
 	pm.rotate(angles_.z(), 0., 0., 1.);
 	//pm.translate(-aim_);
 	if (parent_) {
-		//double dist = pm(2, 3);
-		QMatrix4x4 pmat = parent_->worldTransform();//.inverted();
-		//offset_.setZ(offset_.z() - dist);
+		QMatrix4x4 pmat = parent_->worldTransform();
 		offset_ = pmat.column(3).toVector3D();
 		pmat(0, 3) = pmat(1, 3) = pmat(2, 3) = 0.;
 		pmat.translate(aim_);
-		//pm.translate(-aim_);
 		pm *= pmat.inverted();
 		//qDebug() << pmat;
 	}
@@ -107,88 +101,88 @@ void Camera::assign(const Camera & c) {
 }
 
 
-void Camera::panZ(const double & a) {
+void Camera::panZ(const float & a) {
 	QVector3D dv = aim_ - pos_;
-	double tl = QVector2D(dv.x(), dv.y()).length();
+	float tl = QVector2D(dv.x(), dv.y()).length();
 	angles_.setZ(angles_.z() + a);
-	dv = QVector3D(sin(angles_.z() * deg2rad) * tl, cos(angles_.z() * deg2rad) * tl, dv.z());
+	dv = QVector3D(sinf(angles_.z() * deg2rad) * tl, cosf(angles_.z() * deg2rad) * tl, dv.z());
 	aim_ = pos_ + dv;
 	buildTransform();
 }
 
 
-void Camera::panXY(const double & a) {
+void Camera::panXY(const float & a) {
 	QVector3D dv = aim_ - pos_;
-	double tl = dv.length(), tc;
+	float tl = dv.length(), tc;
 	angles_.setY(angles_.y() + a);
-	angles_.setY(piClamp<GLdouble>(angles_.y(), angle_limit_lower_xy, angle_limit_upper_xy));
-	tc = -sin(angles_.y() * deg2rad);
-	dv = QVector3D(sin(angles_.z() * deg2rad) * tc, cos(angles_.z() * deg2rad) * tc, -cos(angles_.y() * deg2rad));
+	angles_.setY(piClamp<GLfloat>(angles_.y(), angle_limit_lower_xy, angle_limit_upper_xy));
+	tc = -sinf(angles_.y() * deg2rad);
+	dv = QVector3D(sinf(angles_.z() * deg2rad) * tc, cosf(angles_.z() * deg2rad) * tc, -cosf(angles_.y() * deg2rad));
 	aim_ = pos_ + dv * tl;
 	buildTransform();
 }
 
 
-void Camera::rotateZ(const double & a) {
+void Camera::rotateZ(const float & a) {
 	QVector3D dv = aim_ - pos_;
-	double tl = QVector2D(dv.x(), dv.y()).length();
+	float tl = QVector2D(dv.x(), dv.y()).length();
 	angles_.setZ(angles_.z() + a);
-	dv = QVector3D(sin(angles_.z() * deg2rad) * tl, cos(angles_.z() * deg2rad) * tl, dv.z());
+	dv = QVector3D(sinf(angles_.z() * deg2rad) * tl, cosf(angles_.z() * deg2rad) * tl, dv.z());
 	aim_ = pos_ + dv;
 	buildTransform();
 }
 
 
-void Camera::rotateXY(const double & a) {
+void Camera::rotateXY(const float & a) {
 	QVector3D dv = aim_ - pos_;
-	double tl = dv.length(), tc;
+	float tl = dv.length(), tc;
 	angles_.setY(angles_.y() + a);
-	angles_.setY(piClamp<GLdouble>(angles_.y(), angle_limit_lower_xy, angle_limit_upper_xy));
-	tc = -sin(angles_.y() * deg2rad);
-	dv = QVector3D(sin(angles_.z() * deg2rad) * tc, cos(angles_.z() * deg2rad) * tc, -cos(angles_.y() * deg2rad));
+	angles_.setY(piClamp<GLfloat>(angles_.y(), angle_limit_lower_xy, angle_limit_upper_xy));
+	tc = -sinf(angles_.y() * deg2rad);
+	dv = QVector3D(sinf(angles_.z() * deg2rad) * tc, cosf(angles_.z() * deg2rad) * tc, -cosf(angles_.y() * deg2rad));
 	aim_ = pos_ + dv * tl;
 	buildTransform();
 }
 
 
-void Camera::orbitZ(const double & a) {
+void Camera::orbitZ(const float & a) {
 	QVector3D dv = aim_ - pos_;
-	double tl = QVector2D(dv.x(), dv.y()).length();
+	float tl = QVector2D(dv.x(), dv.y()).length();
 	angles_.setZ(angles_.z() + a);
-	dv = QVector3D(sin(angles_.z() * deg2rad) * tl, cos(angles_.z() * deg2rad) * tl, dv.z());
+	dv = QVector3D(sinf(angles_.z() * deg2rad) * tl, cosf(angles_.z() * deg2rad) * tl, dv.z());
 	pos_ = aim_ - dv;
 	buildTransform();
 }
 
 
-void Camera::orbitXY(const double & a) {
+void Camera::orbitXY(const float & a) {
 	QVector3D dv = aim_ - pos_;
-	double tl = dv.length(), tc;
+	float tl = dv.length(), tc;
 	angles_.setY(angles_.y() + a);
-	angles_.setY(piClamp<GLdouble>(angles_.y(), angle_limit_lower_xy, angle_limit_upper_xy));
-	tc = -sin(angles_.y() * deg2rad);
-	dv = QVector3D(sin(angles_.z() * deg2rad) * tc, cos(angles_.z() * deg2rad) * tc, -cos(angles_.y() * deg2rad));
+	angles_.setY(piClamp<GLfloat>(angles_.y(), angle_limit_lower_xy, angle_limit_upper_xy));
+	tc = -sinf(angles_.y() * deg2rad);
+	dv = QVector3D(sinf(angles_.z() * deg2rad) * tc, cosf(angles_.z() * deg2rad) * tc, -cosf(angles_.y() * deg2rad));
 	pos_ = aim_ - dv * tl;
 	buildTransform();
 }
 
 
-void Camera::setAngleZ(const double & a) {
+void Camera::setAngleZ(const float & a) {
 	QVector3D dv = aim_ - pos_;
-	double tl = QVector2D(dv.x(), dv.y()).length();
+	float tl = QVector2D(dv.x(), dv.y()).length();
 	angles_.setZ(a);
-	dv = QVector3D(sin(angles_.z() * deg2rad) * tl, cos(angles_.z() * deg2rad) * tl, dv.z());
+	dv = QVector3D(sinf(angles_.z() * deg2rad) * tl, cosf(angles_.z() * deg2rad) * tl, dv.z());
 	aim_ = pos_ + dv;
 	buildTransform();
 }
 
 
-void Camera::setAngleXY(const double & a) {
+void Camera::setAngleXY(const float & a) {
 	QVector3D dv = aim_ - pos_;
-	double tl = dv.length(), tc;
+	float tl = dv.length(), tc;
 	angles_.setY(a);
-	tc = -sin(angles_.y() * deg2rad);
-	dv = QVector3D(sin(angles_.z() * deg2rad) * tc, cos(angles_.z() * deg2rad) * tc, -cos(angles_.y() * deg2rad));
+	tc = -sinf(angles_.y() * deg2rad);
+	dv = QVector3D(sinf(angles_.z() * deg2rad) * tc, cosf(angles_.z() * deg2rad) * tc, -cosf(angles_.y() * deg2rad));
 	//pos_ = aim_ - dv;
 	aim_ = pos_ + dv * tl;
 	buildTransform();
@@ -196,11 +190,11 @@ void Camera::setAngleXY(const double & a) {
 }
 
 
-void Camera::moveForward(const double & x, bool withZ) {
+void Camera::moveForward(const float & x, bool withZ) {
 	QVector3D dv;// = aim_ - pos_;
-	double tc = -sin(angles_.y() * deg2rad);
-	dv = QVector3D(sin(angles_.z() * deg2rad) * tc, cos(angles_.z() * deg2rad) * tc, 0.);
-	if (withZ) dv.setZ(-cos(angles_.y() * deg2rad));
+	float tc = -sinf(angles_.y() * deg2rad);
+	dv = QVector3D(sinf(angles_.z() * deg2rad) * tc, cosf(angles_.z() * deg2rad) * tc, 0.);
+	if (withZ) dv.setZ(-cosf(angles_.y() * deg2rad));
 	dv.normalize();
 	dv *= x;
 	pos_ += dv;
@@ -209,11 +203,11 @@ void Camera::moveForward(const double & x, bool withZ) {
 }
 
 
-void Camera::moveLeft(const double & x, bool withZ) {
+void Camera::moveLeft(const float & x, bool withZ) {
 	QVector3D dv;// = aim_ - pos_;
-	double tc = -sin(angles_.y() * deg2rad);
-	dv = QVector3D(sin(angles_.z() * deg2rad - M_PI_2) * tc, cos(angles_.z() * deg2rad - M_PI_2) * tc, 0.);
-	if (withZ) dv.setZ(-sin(angles_.x() * deg2rad));
+	float tc = -sinf(angles_.y() * deg2rad);
+	dv = QVector3D(sinf(angles_.z() * deg2rad - float(M_PI_2)) * tc, cosf(angles_.z() * deg2rad - float(M_PI_2)) * tc, 0.f);
+	if (withZ) dv.setZ(-sinf(angles_.x() * deg2rad));
 	dv.normalize();
 	dv *= x;
 	pos_ += dv;
@@ -222,13 +216,13 @@ void Camera::moveLeft(const double & x, bool withZ) {
 }
 
 
-void Camera::moveUp(const double & x, bool onlyZ) {
+void Camera::moveUp(const float & x, bool onlyZ) {
 	QVector3D dv;
 	if (onlyZ)
 		dv = QVector3D(0., 0., x);
 	else {
-		double tc = cos(angles_.y() * deg2rad);
-		dv = QVector3D(sin(angles_.z() * deg2rad) * tc, cos(angles_.z() * deg2rad) * tc, -sin(angles_.y() * deg2rad));
+		float tc = cosf(angles_.y() * deg2rad);
+		dv = QVector3D(sinf(angles_.z() * deg2rad) * tc, cosf(angles_.z() * deg2rad) * tc, -sinf(angles_.y() * deg2rad));
 		dv.normalize();
 		dv *= x;
 	}
@@ -238,37 +232,29 @@ void Camera::moveUp(const double & x, bool onlyZ) {
 }
 
 
-void Camera::flyCloser(const double & s) {
+void Camera::flyCloser(const float & s) {
 	QVector3D dv = aim_ - pos_;
-	double tl = dv.length() / (1. + s), tc = -sin(angles_.y() * deg2rad);
-	dv = QVector3D(sin(angles_.z() * deg2rad) * tc, cos(angles_.z() * deg2rad) * tc, -cos(angles_.y() * deg2rad));
+	float tl = dv.length() / (1.f + s), tc = -sinf(angles_.y() * deg2rad);
+	dv = QVector3D(sinf(angles_.z() * deg2rad) * tc, cosf(angles_.z() * deg2rad) * tc, -cosf(angles_.y() * deg2rad));
 	pos_ = aim_ - dv * tl;
 	buildTransform();
 }
 
 
-void Camera::flyFarer(const double & s) {
+void Camera::flyFarer(const float & s) {
 	QVector3D dv = aim_ - pos_;
-	double tl = dv.length() * (1. + s), tc = -sin(angles_.y() * deg2rad);
-	dv = QVector3D(sin(angles_.z() * deg2rad) * tc, cos(angles_.z() * deg2rad) * tc, -cos(angles_.y() * deg2rad));
+	float tl = dv.length() * (1.f + s), tc = -sinf(angles_.y() * deg2rad);
+	dv = QVector3D(sinf(angles_.z() * deg2rad) * tc, cosf(angles_.z() * deg2rad) * tc, -cosf(angles_.y() * deg2rad));
 	pos_ = aim_ - dv * tl;
 	buildTransform();
 }
 
 
-void Camera::flyToDistance(const double & d) {
+void Camera::flyToDistance(const float & d) {
 	QVector3D dv = aim_ - pos_;
-	double tc = -sin(angles_.y() * deg2rad);
-	dv = QVector3D(sin(angles_.z() * deg2rad) * tc, cos(angles_.z() * deg2rad) * tc, -cos(angles_.y() * deg2rad));
+	float tc = -sinf(angles_.y() * deg2rad);
+	dv = QVector3D(sinf(angles_.z() * deg2rad) * tc, cosf(angles_.z() * deg2rad) * tc, -cosf(angles_.y() * deg2rad));
 	pos_ = aim_ - dv * d;
 	buildTransform();
 }
 
-/*
-QVector3D Camera::pointFromViewport(int x_, int y_, double z_) {
-	GLsizei mx = x_, my = viewport[3] - y_, mz = z_;
-	GLdouble x,y,z;
-	gluUnProject(mx, my, mz, modelview, projection, viewport, &x, &y, &z);
-	return QVector3D(x,y,z);
-}
-*/
diff --git a/qglview/glcamera.h b/qglview/glcamera.h
index 2139c69..b427b16 100644
--- a/qglview/glcamera.h
+++ b/qglview/glcamera.h
@@ -36,74 +36,66 @@ public:
 	Camera();
 
 	void setPos(const QVector3D & p) {pos_ = p; anglesFromPoints(); buildTransform();}
-	/*void setPosX(const double & o) {QVector3D dv = aim_ - pos_; pos_.setX(o); aim_ = pos_ + dv;}
-	void setPosY(const double & o) {QVector3D dv = aim_ - pos_; pos_.setY(o); aim_ = pos_ + dv;}
-	void setPosZ(const double & o) {QVector3D dv = aim_ - pos_; pos_.setZ(o); aim_ = pos_ + dv;}*/
 	void setAim(const QVector3D & p) {aim_ = p; anglesFromPoints(); buildTransform();}
 	void move(const QVector3D & p) {pos_ += p; aim_ += p; buildTransform();}
-	void move(const double & x, const double & y = 0., const double & z = 0.) {pos_ += QVector3D(x, y, z); aim_ += QVector3D(x, y, z); buildTransform();}
-	void moveForward(const double & x, bool withZ = true);
-	void moveBackward(const double & x, bool withZ = true) {moveForward(-x, withZ);}
-	void moveLeft(const double & x, bool withZ = true);
-	void moveRight(const double & x, bool withZ = true) {moveLeft(-x, withZ);}
-	void moveUp(const double & x, bool onlyZ = false);
-	void moveDown(const double & x, bool onlyZ = false) {moveUp(-x, onlyZ);}
-	void rotateZ(const double & a);
-	void rotateXY(const double & a);
-	void rotateRoll(const double & a) {angles_.setX(angles_.x() + a); buildTransform();}
-	void orbitZ(const double & a);
-	void orbitXY(const double & a);
-	void panZ(const double & a);
-	void panXY(const double & a);
-	void setFOV(const double & f) {fov_ = f;}
+	void move(const float & x, const float & y = 0., const float & z = 0.) {pos_ += QVector3D(x, y, z); aim_ += QVector3D(x, y, z); buildTransform();}
+	void moveForward(const float & x, bool withZ = true);
+	void moveBackward(const float & x, bool withZ = true) {moveForward(-x, withZ);}
+	void moveLeft(const float & x, bool withZ = true);
+	void moveRight(const float & x, bool withZ = true) {moveLeft(-x, withZ);}
+	void moveUp(const float & x, bool onlyZ = false);
+	void moveDown(const float & x, bool onlyZ = false) {moveUp(-x, onlyZ);}
+	void rotateZ(const float & a);
+	void rotateXY(const float & a);
+	void rotateRoll(const float & a) {angles_.setX(angles_.x() + a); buildTransform();}
+	void orbitZ(const float & a);
+	void orbitXY(const float & a);
+	void panZ(const float & a);
+	void panXY(const float & a);
+	void setFOV(const float & f) {fov_ = f;}
 	void setAngles(const QVector3D & a) {setRotation(a);}
-	void setAngleZ(const double & a);
-	void setAngleXY(const double & a);
-	void setAngleRoll(const double & a) {angles_.setX(a); buildTransform();}
-	void setAngleLowerLimitXY(const double & a) {angle_limit_lower_xy = a; buildTransform();}
-	void setAngleUpperLimitXY(const double & a) {angle_limit_upper_xy = a; buildTransform();}
-	void setAngleLimitsXY(const double & lower, const double & upper) {angle_limit_lower_xy = lower; angle_limit_upper_xy = upper; buildTransform();}
-	void setDepthStart(const double & d) {depth_start = d;}
-	void setDepthEnd(const double & d) {depth_end = d;}
+	void setAngleZ(const float & a);
+	void setAngleXY(const float & a);
+	void setAngleRoll(const float & a) {angles_.setX(a); buildTransform();}
+	void setAngleLowerLimitXY(const float & a) {angle_limit_lower_xy = a; buildTransform();}
+	void setAngleUpperLimitXY(const float & a) {angle_limit_upper_xy = a; buildTransform();}
+	void setAngleLimitsXY(const float & lower, const float & upper) {angle_limit_lower_xy = lower; angle_limit_upper_xy = upper; buildTransform();}
+	void setDepthStart(const float & d) {depth_start = d;}
+	void setDepthEnd(const float & d) {depth_end = d;}
 	void setMirrorX(bool yes) {mirror_x = yes;}
 	void setMirrorY(bool yes) {mirror_y = yes;}
-	void flyCloser(const double & s);
-	void flyFarer(const double & s);
-	void flyToDistance(const double & d);
+	void flyCloser(const float & s);
+	void flyFarer(const float & s);
+	void flyToDistance(const float & d);
 
 	QVector3D aim() const {return aim_;}
 	QVector3D angles() const {return rotation();}
 	QVector3D direction() const {return (aim_ - pos_).normalized();}
 	QVector3D directionXY() const {QVector3D tv = aim_ - pos_; return QVector3D(tv.x(), tv.y(), 0.).normalized();}
-	double FOV() const {return fov_;}
-	double distance() const {return (pos_ - aim_).length();}
-	double angleZ() const {return angles_.z();}
-	double angleXY() const {return angles_.y();}
-	double angleRoll() const {return angles_.x();}
-	double angleLowerLimitXY() const {return angle_limit_lower_xy;}
-	double angleUpperLimitXY() const {return angle_limit_upper_xy;}
-	double depthStart() const {return depth_start;}
-	double depthEnd() const {return depth_end;}
+	float FOV() const {return fov_;}
+	float distance() const {return (pos_ - aim_).length();}
+	float angleZ() const {return angles_.z();}
+	float angleXY() const {return angles_.y();}
+	float angleRoll() const {return angles_.x();}
+	float angleLowerLimitXY() const {return angle_limit_lower_xy;}
+	float angleUpperLimitXY() const {return angle_limit_upper_xy;}
+	float depthStart() const {return depth_start;}
+	float depthEnd() const {return depth_end;}
 	bool isMirrorX() const {return mirror_x;}
 	bool isMirrorY() const {return mirror_y;}
 	void anglesFromPoints();
-	void apply(const GLdouble & aspect = 1.);
+	void apply(const GLfloat & aspect = 1.);
 	void assign(const Camera & c);
-	//QVector3D pointFromViewport(int x_, int y_, double z_); TODO
 
 	QMatrix4x4 offsetMatrix() const;
 
 private:
-	//void localTransform(QMatrix4x4 & m);
-	
 	QVector3D aim_, offset_;
-	GLdouble fov_;
-	GLdouble depth_start;
-	GLdouble depth_end;
-	GLdouble angle_limit_lower_xy;
-	GLdouble angle_limit_upper_xy;
-	//GLdouble modelview[16], projection[16];
-	//GLint viewport[4];
+	GLfloat fov_;
+	GLfloat depth_start;
+	GLfloat depth_end;
+	GLfloat angle_limit_lower_xy;
+	GLfloat angle_limit_upper_xy;
 	bool mirror_x;
 	bool mirror_y;
 
diff --git a/qglview/glframebuffer.cpp b/qglview/glframebuffer.cpp
index e98ea95..9578f0b 100644
--- a/qglview/glframebuffer.cpp
+++ b/qglview/glframebuffer.cpp
@@ -131,7 +131,7 @@ void GLFramebuffer::setWriteBuffers(int * indeces, int count) {
 
 void GLFramebuffer::bindColorTextures() {
 	for (int i = colors.size() - 1; i >= 0; --i) {
-		glActiveTextureChannel(i);
+		glActiveTexture(GL_TEXTURE0 + i);
 		glBindTexture(GL_TEXTURE_2D, colors[i]);
 		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
 		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
@@ -140,6 +140,6 @@ void GLFramebuffer::bindColorTextures() {
 
 
 void GLFramebuffer::bindDepthTexture(int channel) {
-	glActiveTextureChannel(channel);
+	glActiveTexture(GL_TEXTURE0 + channel);
 	glBindTexture(GL_TEXTURE_2D, tex_d);
 }
diff --git a/qglview/glframebuffer.h b/qglview/glframebuffer.h
index cf3e1cb..d960f5d 100644
--- a/qglview/glframebuffer.h
+++ b/qglview/glframebuffer.h
@@ -50,6 +50,9 @@ public:
 	void bindDepthTexture(int channel);
 
 private:
+	void deleteGLRenderbuffer(GLuint & drbo) {if (drbo != 0) glDeleteRenderbuffers(1, &drbo); drbo = 0;}
+	void deleteGLFramebuffer(GLuint & fbo) {if (fbo != 0) glDeleteFramebuffers(1, &fbo); fbo = 0;}
+
 	bool is_depth, is_changed;
 	QVector<GLuint> colors;
 	GLenum color_format, target_;
diff --git a/qglview/glmaterial.cpp b/qglview/glmaterial.cpp
index 47caa7e..776f8d9 100644
--- a/qglview/glmaterial.cpp
+++ b/qglview/glmaterial.cpp
@@ -19,7 +19,6 @@
 #include "gltypes.h"
 #include "qglview.h"
 
-GLTextureManager * currentGLTextureManager;
 QStringList GLTextureManagerBase::search_pathes(".");
 
 
@@ -35,12 +34,12 @@ bool GLCubeTexture::create() {
 	glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 	//glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_GENERATE_MIPMAP_SGIS, GL_TRUE);
 	//glClearError();
-	glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X, 0, format_, size, size, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0);
-	glTexImage2D(GL_TEXTURE_CUBE_MAP_NEGATIVE_X, 0, format_, size, size, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0);
-	glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_Y, 0, format_, size, size, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0);
-	glTexImage2D(GL_TEXTURE_CUBE_MAP_NEGATIVE_Y, 0, format_, size, size, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0);
-	glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_Z, 0, format_, size, size, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0);
-	glTexImage2D(GL_TEXTURE_CUBE_MAP_NEGATIVE_Z, 0, format_, size, size, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0);
+	glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X, 0, format_, size, size, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
+	glTexImage2D(GL_TEXTURE_CUBE_MAP_NEGATIVE_X, 0, format_, size, size, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
+	glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_Y, 0, format_, size, size, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
+	glTexImage2D(GL_TEXTURE_CUBE_MAP_NEGATIVE_Y, 0, format_, size, size, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
+	glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_Z, 0, format_, size, size, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
+	glTexImage2D(GL_TEXTURE_CUBE_MAP_NEGATIVE_Z, 0, format_, size, size, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
 	//qDebug() << glGetError();
 	changed_ = false;
 	return id_ > 0;
@@ -83,16 +82,14 @@ void GLCubeTexture::loadPathesFromDirectory(const QString & dir) {
 
 
 QString GLTextureManagerBase::findFile(const QString & path) {
-	if (!currentGLTextureManager) return QString();
-	return ::findFile(path, currentGLTextureManager->search_pathes);
+	return ::findFile(path, search_pathes);
 }
 
 
 GLuint GLTextureManagerBase::loadTexture(const QString & path, bool ownership, bool bump) {
-	if (!currentGLTextureManager) return 0;
 	QString p = findFile(path);
 	if (p.isEmpty()) return 0;
-	int tid = ((GLTextureManagerBase*)currentGLTextureManager)->textureID(p, bump);
+	int tid = textureID(p, bump);
 	if (tid > 0) {
 		//qDebug() << "[TextureManager] Found" << path << "as" << tid;
 		return tid;
@@ -110,7 +107,7 @@ GLuint GLTextureManagerBase::loadTexture(const QString & path, bool ownership, b
 		return tid;
 	}
 	qDebug() << "[TextureManager] Loaded" << p << "as" << tid;
-	if (ownership) ((GLTextureManagerBase*)currentGLTextureManager)->tex_ids[bump ? 1 : 0].insert(p, tid);
+	if (ownership) tex_ids[bump ? 1 : 0].insert(p, tid);
 	return tid;
 }
 
@@ -126,13 +123,12 @@ GLuint GLTextureManagerBase::loadTexture(const QImage & im, bool ownership, bool
 		return tid;
 	}
 	//qDebug() << "[TextureManager] Loaded image as" << tid;
-	if (ownership) ((GLTextureManagerBase*)currentGLTextureManager)->tex_ids[bump ? 1 : 0].insert(QString(), tid);
+	if (ownership) tex_ids[bump ? 1 : 0].insert(QString(), tid);
 	return tid;
 }
 
 
 void GLTextureManagerBase::reloadTexture(GLuint tid, const QString & path) {
-	if (!currentGLTextureManager) return;
 	QString p = findFile(path);
 	if (p.isEmpty() || (tid == 0)) return;
 	QImage image(p);
@@ -146,7 +142,6 @@ void GLTextureManagerBase::reloadTexture(GLuint tid, const QString & path) {
 
 
 void GLTextureManagerBase::reloadTexture(GLuint tid, const QImage & im) {
-	if (!currentGLTextureManager) return;
 	if (im.isNull() || (tid == 0)) return;
 	QImage image(im);
 	createGLTexture(tid, image);
@@ -154,28 +149,31 @@ void GLTextureManagerBase::reloadTexture(GLuint tid, const QImage & im) {
 }
 
 
-Vector3d colorVector(QRgb c) {return Vector3d(((uchar*)(&c))[0] / 255., ((uchar*)(&c))[1] / 255., ((uchar*)(&c))[2] / 255.);}
+Vector3d colorVector(QRgb c) {
+	return Vector3d(((uchar*)(&c))[0] / 255., ((uchar*)(&c))[1] / 255., ((uchar*)(&c))[2] / 255.);
+}
+
 
 void GLTextureManagerBase::convertToNormal(QImage & im) {
 	if (im.isNull()) return;
 	QImage sim = im.convertToFormat(QImage::Format_ARGB32);
-	double sum[3] = {0., 0., 0.};
+	float sum[3] = {0., 0., 0.};
 	llong a = 0;
 	const uchar * sd = sim.constBits();
 	for (int i = 0; i < sim.height(); i++) {
 		for (int j = 0; j < sim.width(); j++) {
-			sum[2] += double(sd[a]) / 255. - 0.5; ++a;
-			sum[1] += double(sd[a]) / 255. - 0.5; ++a;
-			sum[0] += double(sd[a]) / 255. - 0.5; ++a;
+			sum[2] += sd[a] / 255.f - 0.5f; ++a;
+			sum[1] += sd[a] / 255.f - 0.5f; ++a;
+			sum[0] += sd[a] / 255.f - 0.5f; ++a;
 			++a;
 		}
 	}
-	double wh = sim.width() * sim.height();
+	float wh = sim.width() * sim.height();
 	sum[0] /= wh;
 	sum[1] /= wh;
 	sum[2] /= wh;
 	qDebug() << sum[0] << sum[1] << sum[2];
-	if ((qAbs(sum[0]) <= 0.05) && (qAbs(sum[1]) <= 0.05) && (sum[2] >= 0.4)) /// already normal
+	if ((qAbs(sum[0]) <= 0.05f) && (qAbs(sum[1]) <= 0.05f) && (sum[2] >= 0.4f)) /// already normal
 		return;
 	qDebug() << "convert to bump";
 	QImage dim = QImage(sim.width(), sim.height(), QImage::Format_ARGB32);
@@ -192,14 +190,14 @@ void GLTextureManagerBase::convertToNormal(QImage & im) {
 			p[0] = colorVector(sim.pixel(j, i));
 			p[1] = colorVector(sim.pixel(j, ty));
 			p[2] = colorVector(sim.pixel(tx, i));
-			res.y = piClamp(0.5 + (p[0].length() - p[1].length()) / 2., 0., 1.);
-			res.x = piClamp(0.5 + (p[0].length() - p[2].length()) / 2., 0., 1.);
+			res.y = piClamp(0.5f + (p[0].length() - p[1].length()) / 2.f, 0.f, 1.f);
+			res.x = piClamp(0.5f + (p[0].length() - p[2].length()) / 2.f, 0.f, 1.f);
 			tx = (j + 1) % w;
 			ty = (i + 1) % h;
 			p[1] = colorVector(sim.pixel(j, ty));
 			p[2] = colorVector(sim.pixel(tx, i));
-			res.y = piClamp(0.5 + (p[0].length() - p[1].length()) / 2., 0., 1.);
-			res.x = piClamp(0.5 + (p[0].length() - p[2].length()) / 2., 0., 1.);
+			res.y = piClamp(0.5f + (p[0].length() - p[1].length()) / 2.f, 0.f, 1.f);
+			res.x = piClamp(0.5f + (p[0].length() - p[2].length()) / 2.f, 0.f, 1.f);
 			res.z = 1.;
 			dd[a] = res.z * 255; ++a;
 			dd[a] = res.x * 255; ++a;
@@ -247,7 +245,7 @@ void Material::apply(QOpenGLShaderProgram * prog) {
 		glMaterialfv(GL_FRONT, GL_DIFFUSE, mat_diffuse);
 		glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular);
 		//qDebug() << (map_specularity.color_amount)*128.;
-		glMaterialf(GL_FRONT, GL_SHININESS, (map_specularity.color_amount)*128.);
+		glMaterialf(GL_FRONT, GL_SHININESS, (map_specularity.color_amount)*128.f);
 		glMaterialfv(GL_FRONT, GL_EMISSION, mat_emission);
 		glMaterialfv(GL_FRONT, GL_AMBIENT, mat_diffuse);
 	}
@@ -256,7 +254,6 @@ void Material::apply(QOpenGLShaderProgram * prog) {
 
 void Material::loadTextures(GLTextureManagerBase * tm) {
 	//qDebug() << "load textures";
-	if (!tm) tm = (GLTextureManagerBase*)currentGLTextureManager;
 	if (!tm) return;
 	if (!map_diffuse.bitmap_path.isEmpty()) map_diffuse.bitmap_id = tm->loadTexture(map_diffuse.bitmap_path);
 	if (!map_normal.bitmap_path.isEmpty()) map_normal.bitmap_id = tm->loadTexture(map_normal.bitmap_path, true, true);
diff --git a/qglview/glmaterial.h b/qglview/glmaterial.h
index ea7bd0f..57fb96d 100644
--- a/qglview/glmaterial.h
+++ b/qglview/glmaterial.h
@@ -76,14 +76,19 @@ class GLTextureManager;
 
 class GLTextureManagerBase {
 public:
-	static void addSearchPath(const QString & path) {search_pathes << path;}
+	GLTextureManagerBase() {}
+	virtual ~GLTextureManagerBase() {}
+	void addSearchPath(const QString & path) {search_pathes << path;}
 	static QStringList searchPathes() {return search_pathes;}
-	static QString findFile(const QString & path);
-	static GLuint loadTexture(const QString & path, bool ownership = true, bool bump = false);
-	static GLuint loadTexture(const QImage & image, bool ownership = true, bool bump = false);
-	static void reloadTexture(GLuint tid, const QString & path);
-	static void reloadTexture(GLuint tid, const QImage & image);
+	QString findFile(const QString & path);
+	GLuint loadTexture(const QString & path, bool ownership = true, bool bump = false);
+	GLuint loadTexture(const QImage & image, bool ownership = true, bool bump = false);
+	void reloadTexture(GLuint tid, const QString & path);
+	void reloadTexture(GLuint tid, const QImage & image);
 	int textureID(const QString & path, bool bump = false) {return tex_ids[bump ? 1 : 0][path];}
+	virtual void addTexture(const QString & path) = 0;
+	virtual void addAnimation(const QString & dir, const QString & name) = 0;
+	virtual bool loadTextures() = 0;
 
 protected:
 	static void convertToNormal(QImage & im);
@@ -92,8 +97,6 @@ protected:
 
 };
 
-//extern GLTextureManager * currentGLTextureManager;
-
 struct Map {
 	Map() {bitmap_id = 0; color_amount = 1.f; color_offset = 0.f; animation_frame_rate = -1.f;}
 	QString bitmap_path;
@@ -108,7 +111,7 @@ struct Map {
 struct Material {
 	Material();
 	void apply(QOpenGLShaderProgram * prog);
-	void loadTextures(GLTextureManagerBase * tm = 0);
+	void loadTextures(GLTextureManagerBase * tm);
 	QString name;
 	QColor color_diffuse;
 	QColor color_specular;
diff --git a/qglview/globject.cpp b/qglview/globject.cpp
index e69d0d1..a49bdf8 100644
--- a/qglview/globject.cpp
+++ b/qglview/globject.cpp
@@ -27,7 +27,7 @@ GLObjectBase::GLObjectBase() {
 	pass_ = Solid;
 	geom_prim = Triangles;
 	scale_ = QVector3D(1., 1., 1.);
-	parent_ = 0;
+	parent_ = nullptr;
 	is_root = is_init = is_tex_loaded = selected_ = false;
 	visible_ = accept_fog = accept_light = cast_shadow = rec_shadow = select_ = true;
 	line_width = -1.;
@@ -36,7 +36,7 @@ GLObjectBase::GLObjectBase() {
 	type_ = glMesh;
 	raw_matrix = false;
 	mat_.setToIdentity();
-	view_ = 0;
+	view_ = nullptr;
 }
 
 
@@ -45,7 +45,7 @@ GLObjectBase::~GLObjectBase() {
 	if (parent_) parent_->children_.removeAll(this);
 	if (view_) ((QGLView*)view_)->objectDeleted(this);
 	foreach (GLObjectBase * c, children_) {
-		c->parent_ = 0;
+		c->parent_ = nullptr;
 		delete c;
 	}
 }
@@ -81,7 +81,7 @@ GLObjectBase * GLObjectBase::clone(bool withChildren) {
 	o->vbo.normals_ = vbo.normals_;
 	o->vbo.texcoords_ = vbo.texcoords_;
 	o->vbo.colors_ = vbo.colors_;
-	o->view_ = 0;
+	o->view_ = nullptr;
 	o->children_.clear();
 	if (withChildren) {
 		for (int i = 0; i < children_.size(); ++i)
@@ -90,6 +90,17 @@ GLObjectBase * GLObjectBase::clone(bool withChildren) {
 	return o;
 }
 
+
+void GLObjectBase::init() {
+	calculateBoundingBox();
+	vbo.init();
+	vbo.rebuffer();
+	//material_.reflection.create();
+	//qDebug() << "init" << vbo.buffer_;
+	is_init = true;
+}
+
+
 void GLObjectBase::draw(QOpenGLShaderProgram * prog, bool simplest) {
 	vbo.draw(geom_prim, prog, simplest);
 	/*if (!d_vertices.isEmpty()) {
@@ -134,21 +145,65 @@ void GLObjectBase::addChild(GLObjectBase * o) {
 }
 
 
+void GLObjectBase::removeChild(GLObjectBase * o) {
+	if (o == this) return;
+	children_.removeAll(o);
+	o->parent_ = nullptr;
+	o->buildTransform();
+	if (view_ != nullptr) view_->collectLights();
+}
+
+
+void GLObjectBase::removeChild(int index) {
+	children_[index]->parent_ = nullptr;
+	children_[index]->buildTransform();
+	children_.removeAt(index);
+	if (view_ != nullptr) view_->collectLights();
+}
+
+
 void GLObjectBase::clearChildren(bool deleteAll) {
 	foreach (GLObjectBase * i, children_) {
-		i->view_ = 0;
-		i->parent_ = 0;
+		i->view_ = nullptr;
+		i->parent_ = nullptr;
 		i->clearChildren(deleteAll);
 		if (deleteAll) {
 			delete i;
+		} else {
+			i->buildTransform();
 		}
-		i->buildTransform();
 	}
 	children_.clear();
 	if (view_) view_->collectLights();
 }
 
 
+GLObjectBase * GLObjectBase::child(int index) {
+	if (index < 0 || index >= children_.size()) return nullptr;
+	return children_[index];
+}
+
+
+GLObjectBase * GLObjectBase::child(const QString & name) {
+	foreach (GLObjectBase * i, children_)
+		if (i->name_ == name) return i;
+	return nullptr;
+}
+
+
+const GLObjectBase * GLObjectBase::child(int index) const {
+	if (index < 0 || index >= children_.size()) return nullptr;
+	return children_[index];
+}
+
+
+const GLObjectBase * GLObjectBase::child(const QString & name) const {
+	foreach (GLObjectBase * i, children_)
+		if (i->name_ == name) return i;
+	return nullptr;
+}
+
+
 QList<GLObjectBase * > GLObjectBase::children(bool all_) {
 	if (!all_) return children_;
 	QList<GLObjectBase * > cl;
@@ -157,6 +212,66 @@ QList<GLObjectBase * > GLObjectBase::children(bool all_) {
 }
 
 
+void GLObjectBase::rotateX(GLfloat a) {
+	raw_matrix = false;
+	angles_.setX(angles_.x() + a);
+	buildTransform();
+}
+
+
+void GLObjectBase::rotateY(GLfloat a) {
+	raw_matrix = false;
+	angles_.setY(angles_.y() + a);
+	buildTransform();
+}
+
+
+void GLObjectBase::rotateZ(GLfloat a) {
+	raw_matrix = false;
+	angles_.setZ(angles_.z() + a);
+	while (angles_.z() < -360.f) angles_.setZ(angles_.z() + 360.f);
+	while (angles_.z() > 360.f) angles_.setZ(angles_.z() - 360.f);
+	buildTransform();
+}
+
+
+void GLObjectBase::setRotationX(GLfloat a) {
+	raw_matrix = false;
+	angles_.setX(a);
+	buildTransform();
+}
+
+
+void GLObjectBase::setRotationY(GLfloat a) {
+	raw_matrix = false;
+	angles_.setY(a);
+	buildTransform();
+}
+
+
+void GLObjectBase::setRotationZ(GLfloat a) {
+	raw_matrix = false;
+	angles_.setZ(a);
+	while (angles_.z() < -360.f) angles_.setZ(angles_.z() + 360.f);
+	while (angles_.z() > 360.f) angles_.setZ(angles_.z() - 360.f);
+	buildTransform();
+}
+
+
+void GLObjectBase::setRotation(const QVector3D & a) {
+	raw_matrix = false;
+	angles_= a;
+	buildTransform();
+}
+
+
+void GLObjectBase::resetRotation() {
+	raw_matrix = false;
+	angles_ =  QVector3D(0., 0., 0.);
+	buildTransform();
+}
+
+
 void GLObjectBase::addChildren(QList<GLObjectBase * > & list, GLObjectBase * where) {
 	foreach (GLObjectBase * i, where->children_) {
 		list << i;
@@ -165,6 +280,15 @@ void GLObjectBase::addChildren(QList<GLObjectBase * > & list, GLObjectBase * whe
 }
 
 
+void GLObjectBase::loadTextures(bool with_children) {
+	material_.loadTextures(view_->textureManager());
+	if (with_children)
+		foreach (GLObjectBase * i, children_) i->loadTextures();
+	is_tex_loaded = true;
+	checkPass();
+}
+
+
 void GLObjectBase::calculateBoundingBox() {
 	bound = vbo.boundingBox();
 	QVector<QVector3D> c = bound.corners(), tc;
@@ -218,6 +342,15 @@ void GLObjectBase::select() {
 }
 
 
+void GLObjectBase::setMaterial(const Material & m, bool with_children) {
+	material_ = m;
+	if (with_children)
+		foreach (GLObjectBase * i, children_) i->setMaterial(m, true);
+	checkPass();
+	is_tex_loaded = false;
+}
+
+
 void GLObjectBase::buildTransform() {
 	itransform_.setToIdentity();
 	GLObjectBase * p = parent_;
@@ -235,6 +368,13 @@ void GLObjectBase::buildTransform() {
 }
 
 
+void GLObjectBase::initInternal() {
+	init();
+	loadTextures();
+	foreach (GLObjectBase * i, children_) i->initInternal();
+}
+
+
 void GLObjectBase::localTransform(QMatrix4x4 & m) {
 	m.translate(pos_);
 	m.rotate(angles_.z(), 0., 0., 1.);
@@ -245,7 +385,7 @@ void GLObjectBase::localTransform(QMatrix4x4 & m) {
 
 
 void GLObjectBase::checkPass() {
-	if (material_.color_diffuse.alphaF() * (1.f - material_.transparency) < 1.f) pass_ = Transparent;
+	if (float(material_.color_diffuse.alphaF()) * (1.f - material_.transparency) < 1.f) pass_ = Transparent;
 	else pass_ = Solid;
 }
 
@@ -256,9 +396,9 @@ QMatrix4x4 GLObjectBase::worldMatrix(QMatrix4x4 parent) const {
 	if (raw_matrix) {
 		mat *= mat_;
 	} else {
-		if (angles_.z() != 0.) mat.rotate(angles_.z(), 0., 0., 1.);
-		if (angles_.y() != 0.) mat.rotate(angles_.y(), 0., 1., 0.);
-		if (angles_.x() != 0.) mat.rotate(angles_.x(), 1., 0., 0.);
+		if (angles_.z() != 0.f) mat.rotate(angles_.z(), 0., 0., 1.);
+		if (angles_.y() != 0.f) mat.rotate(angles_.y(), 0., 1., 0.);
+		if (angles_.x() != 0.f) mat.rotate(angles_.x(), 1., 0., 0.);
 		mat.scale(scale_);
 	}
 	return parent * mat;
@@ -269,14 +409,14 @@ void GLObjectBase::render(int * id, QMap<int, GLObjectBase * > * ids, int sh_id_
 	if (!visible_) return;
 	//glPushMatrix();
 	///qglMultMatrix TODO
-	material_.apply(0);
-	if (id != 0) {
+	material_.apply(nullptr);
+	if (id != nullptr) {
 		++(*id);
 		ids->insert(*id, this);
 		//glVertexAttrib1f(sh_id_loc, (*id) / 255.f);
 		//qDebug() << "assign to" << sh_id_loc << (*id) / 255.f;
 	}
-	draw(0);
+	draw(nullptr);
 	foreach (GLObjectBase * i, children_)
 		i->render(id, ids, sh_id_loc);
 	//glPopMatrix();
@@ -296,7 +436,7 @@ Light::Light(): GLObjectBase(), shadow_map(0, true, GL_R16F) {
 }
 
 
-Light::Light(const QVector3D & p, const QColor & c, GLdouble i): GLObjectBase(), shadow_map(0, true, GL_R16F) {
+Light::Light(const QVector3D & p, const QColor & c, float i): GLObjectBase(), shadow_map(0, true, GL_R16F) {
 	type_ = glLight;
 	light_type = Omni;
 	pos_ = p;
@@ -314,7 +454,7 @@ GLObjectBase * Light::clone(bool withChildren) {
 	//GLObjectBase::clone(withChildren);
 	o->is_init = false;
 	o->name_ = name_ + "_copy";
-	o->view_ = 0;
+	o->view_ = nullptr;
 	o->children_.clear();
 	if (withChildren) {
 		for (int i = 0; i < children_.size(); ++i)
@@ -340,7 +480,7 @@ void Light::draw(QOpenGLShaderProgram * prog, bool simplest) {
 	glBegin(GL_POINTS);
 	glVertex3f(0., 0., 0.);
 	glEnd();
-	double s = 10;
+	float s = 10;
 	if (light_type != Omni) {
 		glBegin(GL_LINES);
 		QVector4D dir = QVector4D(direction);
@@ -365,14 +505,14 @@ QDataStream & operator <<(QDataStream & s, const GLObjectBase * p) {
 	//qDebug() << "place self done";
 	if (p->type_ == GLObjectBase::glLight) {
 		//qDebug() << "place light ...";
-		Light * l = (Light*)p;
+		const Light * l = (const Light*)p;
 		cs << cs.chunk(100, l->direction) << cs.chunk(101, l->angle_start) << cs.chunk(102, l->angle_end) << cs.chunk(103, l->intensity)
 			<< cs.chunk(104, l->decay_const) << cs.chunk(105, l->decay_linear) << cs.chunk(106, l->decay_quadratic)
 			<< cs.chunk(107, l->decay_start) << cs.chunk(108, l->decay_end) << cs.chunk(109, int(l->light_type));
 	}
 	if (p->type_ == GLObjectBase::glCamera) {
 		//qDebug() << "place camera ...";
-		Camera * c = (Camera*)p;
+		const Camera * c = (const Camera*)p;
 		cs << cs.chunk(200, c->aim_) << cs.chunk(201, c->fov_) << cs.chunk(202, c->depth_start) << cs.chunk(203, c->depth_end)
 			<< cs.chunk(204, c->angle_limit_lower_xy) << cs.chunk(205, c->angle_limit_upper_xy)
 			<< cs.chunk(206, c->mirror_x) << cs.chunk(207, c->mirror_y);
@@ -385,10 +525,10 @@ QDataStream & operator <<(QDataStream & s, const GLObjectBase * p) {
 }
 QDataStream & operator >>(QDataStream & s, GLObjectBase *& p) {
 	ChunkStream cs(s);
-	p = 0;
+	p = nullptr;
 	int ccnt = 0;
-	Light * l = 0;
-	Camera * c = 0;
+	Light * l = nullptr;
+	Camera * c = nullptr;
 	//qDebug() << "read obj ...";
 	while (!cs.atEnd()) {
 		switch (cs.read()) {
@@ -410,7 +550,7 @@ QDataStream & operator >>(QDataStream & s, GLObjectBase *& p) {
 		case 5:   if (p) p->cast_shadow = cs.getData<bool>(); break;
 		case 6:   if (p) p->rec_shadow = cs.getData<bool>(); break;
 		case 7:   if (p) p->raw_matrix = cs.getData<bool>(); break;
-		case 8:   if (p) p->line_width = cs.getData<double>(); break;
+		case 8:   if (p) p->line_width = cs.getData<float>(); break;
 		case 9:   if (p) p->render_mode = (GLObjectBase::RenderMode)cs.getData<int>(); break;
 		case 10:  if (p) p->material_ = cs.getData<Material>(); break;
 		case 11:  if (p) p->pos_ = cs.getData<QVector3D>(); break;
@@ -422,28 +562,28 @@ QDataStream & operator >>(QDataStream & s, GLObjectBase *& p) {
 		case 17:  if (p) p->name_ = cs.getData<QString>(); break;
 		case 18:  if (p) p->meta = cs.getData<QVariantMap>(); break;
 		case 100: if (l) l->direction = cs.getData<QVector3D>(); break;
-		case 101: if (l) l->angle_start = cs.getData<GLdouble>(); break;
-		case 102: if (l) l->angle_end = cs.getData<GLdouble>(); break;
-		case 103: if (l) l->intensity = cs.getData<GLdouble>(); break;
-		case 104: if (l) l->decay_const = cs.getData<GLdouble>(); break;
-		case 105: if (l) l->decay_linear = cs.getData<GLdouble>(); break;
-		case 106: if (l) l->decay_quadratic = cs.getData<GLdouble>(); break;
-		case 107: if (l) l->decay_start = cs.getData<GLdouble>(); break;
-		case 108: if (l) l->decay_end = cs.getData<GLdouble>(); break;
+		case 101: if (l) l->angle_start = cs.getData<GLfloat>(); break;
+		case 102: if (l) l->angle_end = cs.getData<GLfloat>(); break;
+		case 103: if (l) l->intensity = cs.getData<GLfloat>(); break;
+		case 104: if (l) l->decay_const = cs.getData<GLfloat>(); break;
+		case 105: if (l) l->decay_linear = cs.getData<GLfloat>(); break;
+		case 106: if (l) l->decay_quadratic = cs.getData<GLfloat>(); break;
+		case 107: if (l) l->decay_start = cs.getData<GLfloat>(); break;
+		case 108: if (l) l->decay_end = cs.getData<GLfloat>(); break;
 		case 109: if (l) l->light_type = (Light::Type)cs.getData<int>(); break;
 		case 200: if (c) c->setAim(cs.getData<QVector3D>()); break;
-		case 201: if (c) c->setFOV(cs.getData<GLdouble>()); break;
-		case 202: if (c) c->setDepthStart(cs.getData<GLdouble>()); break;
-		case 203: if (c) c->setDepthEnd(cs.getData<GLdouble>()); break;
-		case 204: if (c) c->setAngleLowerLimitXY(cs.getData<GLdouble>()); break;
-		case 205: if (c) c->setAngleUpperLimitXY(cs.getData<GLdouble>()); break;
+		case 201: if (c) c->setFOV(cs.getData<GLfloat>()); break;
+		case 202: if (c) c->setDepthStart(cs.getData<GLfloat>()); break;
+		case 203: if (c) c->setDepthEnd(cs.getData<GLfloat>()); break;
+		case 204: if (c) c->setAngleLowerLimitXY(cs.getData<GLfloat>()); break;
+		case 205: if (c) c->setAngleUpperLimitXY(cs.getData<GLfloat>()); break;
 		case 206: if (c) c->mirror_x = cs.getData<bool>(); break;
 		case 207: if (c) c->mirror_y = cs.getData<bool>(); break;
 		}
 	}
 	//qDebug() << p->name() << ccnt;
 	for (int i = 0; i < ccnt; ++i) {
-		GLObjectBase * c = 0;
+		GLObjectBase * c = nullptr;
 		s >> c;
 		if (!c) continue;
 		c->parent_ = p;
diff --git a/qglview/globject.h b/qglview/globject.h
index 434ec70..362a04a 100644
--- a/qglview/globject.h
+++ b/qglview/globject.h
@@ -39,7 +39,7 @@ public:
 	enum GeomPrimitives {Triangles = GL_TRIANGLES, Quads = GL_QUADS};
 	enum RenderMode {View = 0, Point = GL_POINT, Line = GL_LINE, Fill = GL_FILL};
 
-	GLObjectBase();
+	explicit GLObjectBase();
 	virtual ~GLObjectBase();
 
 	virtual GLObjectBase * clone(bool withChildren = true);
@@ -47,7 +47,7 @@ public:
 	QString name() const {return name_;}
 	void setName(const QString & name) {name_ = name;}
 	//virtual GLuint hList() {return list;}
-	virtual void init() {calculateBoundingBox(); vbo.init(); vbo.rebuffer(); /*material_.reflection.create();*/ /*qDebug() << "init" << vbo.buffer_;*/ is_init = true;}
+	virtual void init();
 	virtual void draw(QOpenGLShaderProgram * prog, bool simplest = false);
 	virtual void update() {}
 	bool isInit() const {return is_init;}
@@ -57,24 +57,24 @@ public:
 	RenderMode renderMode() const {return render_mode;}
 	void setRenderMode(RenderMode mode) {render_mode = mode;}
 
-	double lineWidth() const {return line_width;}
-	void setLineWidth(const double & width) {line_width = width;}
+	float lineWidth() const {return line_width;}
+	void setLineWidth(const float & width) {line_width = width;}
 
 	GLObjectBase * parent() {return parent_;}
 	void setParent(GLObjectBase * o) {parent_ = o;}
-	bool hasParent() const {return parent_ != 0;}
+	bool hasParent() const {return parent_ != nullptr;}
 	bool hasChildren() const {return children_.size() != 0;}
 	void setView(QGLView * v);
 
 	void addChild(GLObjectBase * o);
-	void removeChild(GLObjectBase * o) {if (o == this) return; children_.removeAll(o); o->parent_ = 0; o->buildTransform(); if (view_ != 0) view_->collectLights();}
-	void removeChild(int index) {children_[index]->parent_ = 0; children_[index]->buildTransform(); children_.removeAt(index); if (view_ != 0) view_->collectLights();}
+	void removeChild(GLObjectBase * o);
+	void removeChild(int index);
 	void clearChildren(bool deleteAll = false);
 	int childCount() const {return children_.size();}
-	GLObjectBase * child(int index) {if (index < 0 || index >= children_.size()) return 0; return children_[index];}
-	GLObjectBase * child(const QString & name) {foreach (GLObjectBase * i, children_) if (i->name_ == name) return i; return 0;}
-	const GLObjectBase * child(int index) const {if (index < 0 || index >= children_.size()) return 0; return children_[index];}
-	const GLObjectBase * child(const QString & name) const {foreach (GLObjectBase * i, children_) if (i->name_ == name) return i; return 0;}
+	GLObjectBase * child(int index);
+	GLObjectBase * child(const QString & name);
+	const GLObjectBase * child(int index) const;
+	const GLObjectBase * child(const QString & name) const;
 	QList<GLObjectBase * > children(bool all_ = false);
 
 	bool isVisible() const {return visible_;}
@@ -91,54 +91,54 @@ public:
 
 	void move(const QVector3D & dv) {pos_ += dv; buildTransform();}
 	void moveTo(const QVector3D & dv) {pos_ = dv; buildTransform();}
-	void move(GLdouble dx, GLdouble dy, GLdouble dz = 0.) {move(QVector3D(dx, dy, dz)); buildTransform();}
-	void moveTo(GLdouble dx, GLdouble dy, GLdouble dz = 0.) {moveTo(QVector3D(dx, dy, dz)); buildTransform();}
-	void moveX(GLdouble o) {pos_.setX(pos_.x() + o); buildTransform();}
-	void moveY(GLdouble o) {pos_.setY(pos_.y() + o); buildTransform();}
-	void moveZ(GLdouble o) {pos_.setZ(pos_.z() + o); buildTransform();}
-	void setPosX(GLdouble o) {pos_.setX(o); buildTransform();}
-	void setPosY(GLdouble o) {pos_.setY(o); buildTransform();}
-	void setPosZ(GLdouble o) {pos_.setZ(o); buildTransform();}
-	void setPos(GLdouble x, GLdouble y, GLdouble z) {pos_ = QVector3D(x, y, z); buildTransform();}
+	void move(GLfloat dx, GLfloat dy, GLfloat dz = 0.) {move(QVector3D(dx, dy, dz)); buildTransform();}
+	void moveTo(GLfloat dx, GLfloat dy, GLfloat dz = 0.) {moveTo(QVector3D(dx, dy, dz)); buildTransform();}
+	void moveX(GLfloat o) {pos_.setX(pos_.x() + o); buildTransform();}
+	void moveY(GLfloat o) {pos_.setY(pos_.y() + o); buildTransform();}
+	void moveZ(GLfloat o) {pos_.setZ(pos_.z() + o); buildTransform();}
+	void setPosX(GLfloat o) {pos_.setX(o); buildTransform();}
+	void setPosY(GLfloat o) {pos_.setY(o); buildTransform();}
+	void setPosZ(GLfloat o) {pos_.setZ(o); buildTransform();}
+	void setPos(GLfloat x, GLfloat y, GLfloat z) {pos_ = QVector3D(x, y, z); buildTransform();}
 	void setPos(const QVector3D & p) {pos_ = p; buildTransform();}
 	void resetPos() {pos_ = QVector3D(0., 0., 0.); buildTransform();}
 
 	QVector3D pos() const {return pos_;}
-	double posX() const {return pos_.x();}
-	double posY() const {return pos_.y();}
-	double posZ() const {return pos_.z();}
+	float posX() const {return pos_.x();}
+	float posY() const {return pos_.y();}
+	float posZ() const {return pos_.z();}
 	QVector3D worldPos() const {return (itransform_ * QVector4D(0, 0, 0, 1.)).toVector3D();}
 	QMatrix4x4 worldTransform() const {return itransform_;}
 
 	QVector3D rotation() const {return angles_;}
-	double rotationX() const {return angles_.x();}
-	double rotationY() const {return angles_.y();}
-	double rotationZ() const {return angles_.z();}
-	void rotateX(GLdouble a) {raw_matrix = false; angles_.setX(angles_.x() + a); buildTransform();}
-	void rotateY(GLdouble a) {raw_matrix = false; angles_.setY(angles_.y() + a); buildTransform();}
-	void rotateZ(GLdouble a) {raw_matrix = false; angles_.setZ(angles_.z() + a); while (angles_.z() < -360.) angles_.setZ(angles_.z() + 360.); while (angles_.z() > 360.) angles_.setZ(angles_.z() - 360.); buildTransform();}
-	void setRotationX(GLdouble a) {raw_matrix = false; angles_.setX(a); buildTransform();}
-	void setRotationY(GLdouble a) {raw_matrix = false; angles_.setY(a); buildTransform();}
-	void setRotationZ(GLdouble a) {raw_matrix = false; angles_.setZ(a); while (angles_.z() < -360.) angles_.setZ(angles_.z() + 360.); while (angles_.z() > 360.) angles_.setZ(angles_.z() - 360.); buildTransform();}
-	void setRotation(const QVector3D & a) {raw_matrix = false; angles_= a; buildTransform();}
-	void resetRotation() {raw_matrix = false; angles_ =  QVector3D(0., 0., 0.); buildTransform();}
+	float rotationX() const {return angles_.x();}
+	float rotationY() const {return angles_.y();}
+	float rotationZ() const {return angles_.z();}
+	void rotateX(GLfloat a);
+	void rotateY(GLfloat a);
+	void rotateZ(GLfloat a);
+	void setRotationX(GLfloat a);
+	void setRotationY(GLfloat a);
+	void setRotationZ(GLfloat a);
+	void setRotation(const QVector3D & a);
+	void resetRotation();
 
 	QVector3D scale() {return scale_;}
-	double scaleX() {return scale_.x();}
-	double scaleY() {return scale_.y();}
-	double scaleZ() {return scale_.z();}
+	float scaleX() {return scale_.x();}
+	float scaleY() {return scale_.y();}
+	float scaleZ() {return scale_.z();}
 	void scale(const QVector3D & sv) {raw_matrix = false; scale_ *= sv; buildTransform();}
-	void scale(GLdouble sx, GLdouble sy, GLdouble sz) {raw_matrix = false; scale(QVector3D(sx, sy, sz)); buildTransform();}
-	void scale(GLdouble sx, GLdouble sy) {raw_matrix = false; scale(QVector3D(sx, sy, sy)); buildTransform();}
-	void scale(GLdouble sx) {raw_matrix = false; scale(QVector3D(sx, sx, sx)); buildTransform();}
-	void scaleX(GLdouble a) {raw_matrix = false; scale_.setX(scale_.x() + a); buildTransform();}
-	void scaleY(GLdouble a) {raw_matrix = false; scale_.setY(scale_.y() + a); buildTransform();}
-	void scaleZ(GLdouble a) {raw_matrix = false; scale_.setZ(scale_.z() + a); buildTransform();}
+	void scale(GLfloat sx, GLfloat sy, GLfloat sz) {raw_matrix = false; scale(QVector3D(sx, sy, sz)); buildTransform();}
+	void scale(GLfloat sx, GLfloat sy) {raw_matrix = false; scale(QVector3D(sx, sy, sy)); buildTransform();}
+	void scale(GLfloat sx) {raw_matrix = false; scale(QVector3D(sx, sx, sx)); buildTransform();}
+	void scaleX(GLfloat a) {raw_matrix = false; scale_.setX(scale_.x() + a); buildTransform();}
+	void scaleY(GLfloat a) {raw_matrix = false; scale_.setY(scale_.y() + a); buildTransform();}
+	void scaleZ(GLfloat a) {raw_matrix = false; scale_.setZ(scale_.z() + a); buildTransform();}
 	void setScale(const QVector3D & a) {raw_matrix = false; scale_ = a; buildTransform();}
-	void setScale(GLdouble a) {raw_matrix = false; scale_ = QVector3D(a, a, a); buildTransform();}
-	void setScaleX(GLdouble a) {raw_matrix = false; scale_.setX(a); buildTransform();}
-	void setScaleY(GLdouble a) {raw_matrix = false; scale_.setY(a); buildTransform();}
-	void setScaleZ(GLdouble a) {raw_matrix = false; scale_.setZ(a); buildTransform();}
+	void setScale(GLfloat a) {raw_matrix = false; scale_ = QVector3D(a, a, a); buildTransform();}
+	void setScaleX(GLfloat a) {raw_matrix = false; scale_.setX(a); buildTransform();}
+	void setScaleY(GLfloat a) {raw_matrix = false; scale_.setY(a); buildTransform();}
+	void setScaleZ(GLfloat a) {raw_matrix = false; scale_.setZ(a); buildTransform();}
 	void resetScale() {raw_matrix = false; scale_ = QVector3D(1., 1., 1.); buildTransform();}
 	
 	QMatrix4x4 transform() {return mat_;}
@@ -170,8 +170,8 @@ public:
 	void setSrcAlpha(GLenum mode) {blend_src = mode;}
 	void setDestAlpha(GLenum mode) {blend_dest = mode;}
 
-	void setMaterial(const Material & m, bool with_children = false) {material_ = m; if (with_children) foreach (GLObjectBase * i, children_) i->setMaterial(m, true); checkPass(); is_tex_loaded = false;}
-	Material & material() {/*is_tex_loaded = false;*/ return material_;}
+	void setMaterial(const Material & m, bool with_children = false);
+	Material & material() {return material_;}
 
 	const Box3D & boundingBox(bool withChildren = true) const {return bound;}
 	GLVBO & VBO() {return vbo;}
@@ -192,11 +192,11 @@ public:
 
 protected:
 	void addChildren(QList<GLObjectBase * > & list, GLObjectBase * where);
-	void loadTextures(bool with_children = false) {material_.loadTextures(view_->textureManager()); if (with_children) foreach (GLObjectBase * i, children_) i->loadTextures(); is_tex_loaded = true; checkPass();}
+	void loadTextures(bool with_children = false);
 	//void deleteTextures() {foreach (GLuint i, textures) currentQGLView->deleteTexture(i); textures.clear();}
 	void buildTransform();
-	void initInternal() {init(); loadTextures(); foreach (GLObjectBase * i, children_) i->initInternal();}
-	void render(int * id = 0, QMap<int, GLObjectBase * > * ids = 0, int sh_id_loc = 0);
+	void initInternal();
+	void render(int * id = nullptr, QMap<int, GLObjectBase * > * ids = nullptr, int sh_id_loc = 0);
 	void checkPass();
 	virtual void localTransform(QMatrix4x4 & m);
 	QMatrix4x4 worldMatrix(QMatrix4x4 parent) const;
@@ -204,7 +204,7 @@ protected:
 	int pass_; // Pass
 	bool is_init, is_tex_loaded, accept_light, accept_fog, /*write_depth_,*/ visible_, cast_shadow, rec_shadow, select_, selected_, raw_matrix;
 	bool is_root;
-	double line_width;
+	float line_width;
 	Type type_;
 	GeomPrimitives geom_prim;
 	RenderMode render_mode;
@@ -233,20 +233,20 @@ public:
 	enum Type {Omni, Directional, Cone};
 
 	Light();
-	Light(const QVector3D & p, const QColor & c = Qt::white, GLdouble i = 1.);
+	Light(const QVector3D & p, const QColor & c = Qt::white, float i = 1.);
 	virtual GLObjectBase * clone(bool withChildren = true);
 	virtual void init() {shadow_map.resize(512, 512); is_init = true;}
 	virtual void draw(QOpenGLShaderProgram * prog, bool simplest = false);
 
 	QVector3D direction, dir0, dir1;
-	GLdouble angle_start;
-	GLdouble angle_end;
-	GLdouble intensity;
-	GLdouble decay_const;
-	GLdouble decay_linear;
-	GLdouble decay_quadratic;
-	GLdouble decay_start;
-	GLdouble decay_end;
+	float angle_start;
+	float angle_end;
+	float intensity;
+	float decay_const;
+	float decay_linear;
+	float decay_quadratic;
+	float decay_start;
+	float decay_end;
 	Type light_type;
 	GLFramebuffer shadow_map;
 	QMatrix4x4 shadow_matrix;
diff --git a/qglview/glparticles_system.cpp b/qglview/glparticles_system.cpp
index 6c07ba2..ca83fa4 100644
--- a/qglview/glparticles_system.cpp
+++ b/qglview/glparticles_system.cpp
@@ -110,11 +110,10 @@ void GLParticlesSystem::update() {
 
 void GLParticlesSystem::draw(QOpenGLShaderProgram * prog, bool) {
 	if (particles.isEmpty()) return;
-	if (view_ == 0) return;
-	QGLCI
+	if (view_ == nullptr) return;
 	pass_ = GLObjectBase::Transparent;
-	Camera & camera(view_->camera());
-	QVector3D apos = camera.pos(), dir = camera.direction();
+	Camera * camera(view_->camera());
+	QVector3D apos = camera->pos(), dir = camera->direction();
 	//qDebug() << dir;
 	//qDebug() << camera.angles();
 	//qDebug() << camera.angle_xy;
@@ -124,9 +123,9 @@ void GLParticlesSystem::draw(QOpenGLShaderProgram * prog, bool) {
 									  tr_b = material_.color_diffuse.blueF(),
 									  tr_a = material_.color_diffuse.alphaF() * (1.f - material_.transparency);
 	//cxys = sin(camera.angle_xy * deg2rad);
-	cxyc = cos(camera.angles_.y() * deg2rad);
-	czs = sin(camera.angles_.z() * deg2rad);
-	czc = cos(camera.angles_.z() * deg2rad);
+	cxyc = cosf(camera->angles_.y() * deg2rad);
+	czs = sinf(camera->angles_.z() * deg2rad);
+	czc = cosf(camera->angles_.z() * deg2rad);
 
 	dx = -czc;
 	dy = czs;
@@ -161,7 +160,7 @@ void GLParticlesSystem::draw(QOpenGLShaderProgram * prog, bool) {
 		colors << tr_r << tr_g << tr_b << a;
 		colors << tr_r << tr_g << tr_b << a;
 		if (add_vert_face) {
-			if (cxyc > 0.) {
+			if (cxyc > 0.f) {
 				vertices << i.pos.x() - cdx << i.pos.y() - cdy << i.pos.z();
 				vertices << i.pos.x() + cdx << i.pos.y() - cdy << i.pos.z();
 				vertices << i.pos.x() + cdx << i.pos.y() + cdy << i.pos.z();
@@ -187,7 +186,7 @@ void GLParticlesSystem::draw(QOpenGLShaderProgram * prog, bool) {
 	glEnableClientState(GL_VERTEX_ARRAY);
 	glEnableClientState(GL_TEXTURE_COORD_ARRAY);
 	glEnableClientState(GL_COLOR_ARRAY);
-	QGLC glBindBuffer(GL_ARRAY_BUFFER, 0);
+	glBindBuffer(GL_ARRAY_BUFFER, 0);
 	//glNormal3f(vn.x(), vn.y(), vn.z());
 	glNormal3f(0., 0., 1.);
 	glDepthMask(false);
diff --git a/qglview/glparticles_system.h b/qglview/glparticles_system.h
index 5c1d023..d57525a 100644
--- a/qglview/glparticles_system.h
+++ b/qglview/glparticles_system.h
@@ -24,7 +24,7 @@
 #include "globject.h"
 #include "glcamera.h"
 
-class GLParticlesSystem: public QObject, public GLObjectBase
+class GLParticlesSystem: public QObject, public GLObjectBase, protected QOpenGLFunctions
 {
 	Q_OBJECT
 	Q_PROPERTY(float birthRate READ birthRate WRITE setBirthRate)
diff --git a/qglview/glprimitives.cpp b/qglview/glprimitives.cpp
index fafae45..f87c887 100644
--- a/qglview/glprimitives.cpp
+++ b/qglview/glprimitives.cpp
@@ -32,14 +32,14 @@ void GLPrimitivePoint::draw(QOpenGLShaderProgram * prog, bool simplest) {
 void GLPrimitiveLine::draw(QOpenGLShaderProgram * prog, bool simplest) {
 	glColor3f(material_.color_diffuse.redF(), material_.color_diffuse.greenF(), material_.color_diffuse.blueF());
 	glBegin(GL_LINES);
-	glVertex3d(p0.x(), p0.y(), p0.z());
-	glVertex3d(p1.x(), p1.y(), p1.z());
+	glVertex3f(p0.x(), p0.y(), p0.z());
+	glVertex3f(p1.x(), p1.y(), p1.z());
 	glEnd();
 }
 
 
 
-GLPrimitiveCube::GLPrimitiveCube(double width, double length, double height, QVector3D pos): GLObjectBase() {
+GLPrimitiveCube::GLPrimitiveCube(float width, float length, float height, QVector3D pos): GLObjectBase() {
 	geom_prim = Quads;
 	w = width;
 	l = length;
@@ -50,7 +50,7 @@ GLPrimitiveCube::GLPrimitiveCube(double width, double length, double height, QVe
 
 
 void GLPrimitiveCube::init() {
-	double hw = w / 2., hl = l / 2., hh = h / 2.;
+	float hw = w / 2.f, hl = l / 2.f, hh = h / 2.f;
 	//list = glGenLists(1);
 	//glNewList(list, GL_COMPILE);
 	//glColor4d(material_.color_diffuse.redF(), material_.color_diffuse.greenF(), material_.color_diffuse.blueF(), material_.color_diffuse.alphaF());
@@ -106,7 +106,7 @@ void GLPrimitiveCube::init() {
 }
 
 
-GLPrimitiveEllipsoid::GLPrimitiveEllipsoid(double width, double length, double height, int seg_wl, int seg_h, QVector3D pos) {
+GLPrimitiveEllipsoid::GLPrimitiveEllipsoid(float width, float length, float height, int seg_wl, int seg_h, QVector3D pos) {
 	geom_prim = GLObjectBase::Triangles;
 	w = width;
 	l = length;
@@ -135,21 +135,21 @@ void GLPrimitiveEllipsoid::init() {
 	QVector<QVector3D> points;
 	vbo.clear();
 	vbo.init();
-	uint ret = 0;
+	int ret = 0;
 	int hseg = sh + 1, wlseg = swl + 1;
-	double crw, crl, a, ch, twl;
-	QVector3D cp(0., 0., -h / 2.);
+	float crw, crl, a, ch, twl;
+	QVector3D cp(0., 0., -h / 2.f);
 	points << cp;
 	for (int i = 1; i < hseg; i++) {
-		ch = -cos((double)i / hseg * M_PI);
-		cp.setZ(ch * h / 2.);
-		twl = sqrt(1. - ch * ch) / 2.;
+		ch = -cosf((float)i / hseg * float(M_PI));
+		cp.setZ(ch * h / 2.f);
+		twl = sqrtf(1.f - ch * ch) / 2.f;
 		crw = twl * w;
 		crl = twl * l;
 		for (int j = 0; j < wlseg * 2; j++) {
-			a = (double)j / wlseg * M_PI;
-			cp.setY(crw * sin(a));
-			cp.setX(crl * cos(a));
+			a = (float)j / wlseg * float(M_PI);
+			cp.setY(crw * sinf(a));
+			cp.setX(crl * cosf(a));
 			points << cp;
 			ret = points.size() - 1;
 			if (i == 1)
@@ -167,7 +167,7 @@ void GLPrimitiveEllipsoid::init() {
 			putTriangle(points[ret - wlseg * 2 + 1], points[ret - wlseg * 2], points[ret - wlseg * 4 + 1]);
 		}
 	}
-	points << QVector3D(0., 0., h / 2.);
+	points << QVector3D(0., 0., h / 2.f);
 	ret = points.size() - 1;
 	putTriangle(points[ret - 1], points[ret - wlseg * 2], points[ret]);
 	for (int j = 1; j < wlseg * 2; j++)
diff --git a/qglview/glprimitives.h b/qglview/glprimitives.h
index 25bcd77..bdacff0 100644
--- a/qglview/glprimitives.h
+++ b/qglview/glprimitives.h
@@ -53,10 +53,10 @@ private:
 class GLPrimitiveCube: public GLObjectBase
 {
 public:
-	GLPrimitiveCube(double width = 1., double length = 1., double height = 1., QVector3D pos = QVector3D());
+	GLPrimitiveCube(float width = 1., float length = 1., float height = 1., QVector3D pos = QVector3D());
 	virtual void init();
 private:
-	double w, l, h;
+	float w, l, h;
 };
 
 
@@ -65,11 +65,11 @@ private:
 class GLPrimitiveEllipsoid: public GLObjectBase
 {
 public:
-	GLPrimitiveEllipsoid(double width = 1., double length = 1., double height = 1., int seg_wl = 10, int seg_h = 10, QVector3D pos = QVector3D());
+	GLPrimitiveEllipsoid(float width = 1., float length = 1., float height = 1., int seg_wl = 10, int seg_h = 10, QVector3D pos = QVector3D());
 	virtual void init();
 private:
 	void putTriangle(const QVector3D & v0, const QVector3D & v1, const QVector3D & v2);
-	double w, l, h;
+	float w, l, h;
 	int swl, sh;
 };
 
diff --git a/qglview/glrendererbase.cpp b/qglview/glrendererbase.cpp
index d6ae72e..8eac634 100644
--- a/qglview/glrendererbase.cpp
+++ b/qglview/glrendererbase.cpp
@@ -43,9 +43,9 @@ void GLRendererBase::setupLight(const Light & l, int inpass_index, int gl_index)
 	dir[0] = ld.x();
 	dir[1] = ld.y();
 	dir[2] = ld.z();
-	col[0] = l.visible_ ? l.color().redF() * l.intensity : 0.;
-	col[1] = l.visible_ ? l.color().greenF() * l.intensity : 0.;
-	col[2] = l.visible_ ? l.color().blueF() * l.intensity : 0.;
+	col[0] = l.visible_ ? l.color().redF() * l.intensity : 0.f;
+	col[1] = l.visible_ ? l.color().greenF() * l.intensity : 0.f;
+	col[2] = l.visible_ ? l.color().blueF() * l.intensity : 0.f;
 	glEnable(gl_index);
 	//glLightfv(gl_index, GL_AMBIENT, ambient);
 	glLightfv(gl_index, GL_DIFFUSE, col);
@@ -56,8 +56,8 @@ void GLRendererBase::setupLight(const Light & l, int inpass_index, int gl_index)
 	glLightf(gl_index, GL_QUADRATIC_ATTENUATION, l.decay_quadratic);
 	if (l.light_type == Light::Cone) {
 		glLightfv(gl_index, GL_SPOT_DIRECTION, dir);
-		glLightf(gl_index, GL_SPOT_CUTOFF, l.angle_end / 2.);
-		glLightf(gl_index, GL_SPOT_EXPONENT, (1. - piClamp<double>((l.angle_end - l.angle_start) / (l.angle_end + 0.001), 0., 1.)) * 128.);
+		glLightf(gl_index, GL_SPOT_CUTOFF, l.angle_end / 2.f);
+		glLightf(gl_index, GL_SPOT_EXPONENT, (1.f - piClamp<float>((l.angle_end - l.angle_start) / (l.angle_end + 0.001f), 0., 1.f)) * 128.f);
 	} else {
 		glLightf(gl_index, GL_SPOT_CUTOFF, 180.);
 	}
@@ -88,12 +88,12 @@ void GLRendererBase::setupShadersLights(int lights_count) {
 
 #define BIND_TEXTURE(ch, map) if (rp.prev_tex[ch] != mat.map.bitmap_id) { \
 								rp.prev_tex[ch] = mat.map.bitmap_id; \
-								glActiveTextureChannel(ch); glBindTexture(GL_TEXTURE_2D, mat.map.bitmap_id); \
+								glActiveTexture(GL_TEXTURE0 + ch); glBindTexture(GL_TEXTURE_2D, mat.map.bitmap_id); \
 								glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, view.feature(QGLView::qglAnisotropicLevel).toInt());}
 
 void GLRendererBase::setupTextures(GLObjectBase & o, GLRendererBase::RenderingParameters & rp, bool first_object) {
 	if (first_object) {
-		glReleaseTextures();
+		view.glReleaseTextures();
 		return;
 	}
 	setupShadersTextures(o, rp);
@@ -107,13 +107,13 @@ void GLRendererBase::setupTextures(GLObjectBase & o, GLRendererBase::RenderingPa
 		else {if (rp.prev_fog) {glSetFogEnabled(false); rp.prev_fog = false;}}
 	}
 	if (rp.textures) {
-		BIND_TEXTURE(0, map_diffuse);
-		BIND_TEXTURE(1, map_normal);
-		BIND_TEXTURE(2, map_relief);
-		BIND_TEXTURE(3, map_self_illumination);
-		BIND_TEXTURE(4, map_specularity);
-		BIND_TEXTURE(5, map_specular);
-		glActiveTextureChannel(0);
+		BIND_TEXTURE(0, map_diffuse)
+		BIND_TEXTURE(1, map_normal)
+		BIND_TEXTURE(2, map_relief)
+		BIND_TEXTURE(3, map_self_illumination)
+		BIND_TEXTURE(4, map_specularity)
+		BIND_TEXTURE(5, map_specular)
+		glActiveTexture(GL_TEXTURE0);
 	}
 }
 
@@ -164,7 +164,7 @@ void GLRendererBase::renderObjects(int pass, int light_pass, void * shaders, boo
 	rpl.prev_view_matrix = rp.prev_view_matrix;
 	rpl.proj_matrix = rp.proj_matrix;
 	rpl.prev_proj_matrix = rp.prev_proj_matrix;
-	rpl.cam_offset_matrix = view.camera().offsetMatrix();
+	rpl.cam_offset_matrix = view.camera()->offsetMatrix();
 	//qDebug() << "view:" << rp.view_matrix;
 	for (int i = 0; i < 32; ++i) rpl.prev_tex[i] = 0;
 	setupTextures(view.objects_, rpl, true);
@@ -192,12 +192,12 @@ void GLRendererBase::renderSingleObject(GLObjectBase & o, RenderingParameters &
 		setupTextures(o, rpl, false);
 		mat.apply((QOpenGLShaderProgram*)rpl.shaders);
 		glSetPolygonMode(o.render_mode != GLObjectBase::View ? o.render_mode : (view.rmode != GLObjectBase::View ? view.rmode : GL_FILL));
-		glLineWidth(o.line_width > 0. ? o.line_width : view.lineWidth_);
-		glPointSize(o.line_width > 0. ? o.line_width : view.lineWidth_);
+		glLineWidth(o.line_width > 0.f ? o.line_width : view.lineWidth_);
+		glPointSize(o.line_width > 0.f ? o.line_width : view.lineWidth_);
 		o.update();
 		if (o.pass_ == GLObjectBase::Transparent) {
-			glActiveTextureChannel(3);
-			if (mat.reflectivity > 0.) {
+			glActiveTexture(GL_TEXTURE0 + 3);
+			if (mat.reflectivity > 0.f) {
 				glEnable(GL_TEXTURE_CUBE_MAP);
 				if (!mat.map_reflection.isEmpty()) mat.map_reflection.bind();
 				else glDisable(GL_TEXTURE_CUBE_MAP);
@@ -214,7 +214,7 @@ void GLRendererBase::renderSingleObject(GLObjectBase & o, RenderingParameters &
 			///glLoadTransposeMatrixf(gm);
 			glScalef(-1., -1., -1.);
 			glMatrixMode(GL_MODELVIEW);
-			glActiveTextureChannel(0);
+			glActiveTexture(GL_TEXTURE0);
 		}
 		if (rpl.shaders) {
 			//qDebug() << o.name() << curview << curview.determinant();
@@ -235,8 +235,8 @@ void GLRendererBase::renderShadow(Light * l, QOpenGLShaderProgram * prog, QMatri
 	QVector3D wp = l->worldPos();
 	cam.setPos(wp);
 	cam.setAim(wp + (/*l->worldTransform() */ QVector4D(l->direction)).toVector3D());
-	cam.setDepthStart(view.camera().depthStart());
-	cam.setDepthEnd(view.camera().depthEnd());
+	cam.setDepthStart(view.camera()->depthStart());
+	cam.setDepthEnd(view.camera()->depthEnd());
 	cam.setFOV(l->angle_end);
 	cam.apply(1.);
 	/*cam.rotateXY(l->angle_end);
@@ -276,8 +276,8 @@ void GLRendererBase::renderSingleShadow(GLObjectBase & o, RenderingParameters &
 		setGLMatrix(rpl.view_matrix * rpl.cam_offset_matrix * o.itransform_);
 	}
 	glPolygonMode(GL_FRONT_AND_BACK, o.render_mode != GLObjectBase::View ? o.render_mode : (view.rmode != GLObjectBase::View ? view.rmode : GL_FILL));
-	glLineWidth(o.line_width > 0. ? o.line_width : view.lineWidth_);
-	glPointSize(o.line_width > 0. ? o.line_width : view.lineWidth_);
+	glLineWidth(o.line_width > 0.f ? o.line_width : view.lineWidth_);
+	glPointSize(o.line_width > 0.f ? o.line_width : view.lineWidth_);
 	o.draw((QOpenGLShaderProgram*)rpl.shaders, true);
 	foreach (GLObjectBase * i, o.children_)
 		renderSingleShadow(*i, rpl);
@@ -287,8 +287,8 @@ void GLRendererBase::renderSingleShadow(GLObjectBase & o, RenderingParameters &
 
 
 GLRendererBase::RenderingParameters::RenderingParameters() {
-	shaders = 0;
-	cur_shader = 0;
+	shaders = nullptr;
+	cur_shader = nullptr;
 }
 
 
diff --git a/qglview/glshaders.cpp b/qglview/glshaders.cpp
index 5479c40..083e272 100644
--- a/qglview/glshaders.cpp
+++ b/qglview/glshaders.cpp
@@ -180,13 +180,13 @@ void setUniformMap(QOpenGLShaderProgram * prog, QString map_name, const Map & ma
 void setUniformMaterial(QOpenGLShaderProgram * prog, const Material & mat) {
 	if (!prog) return;
 	if (!prog->isLinked()) return;
-	QGLCI
+	QOpenGLFunctions *glFuncs = QOpenGLContext::currentContext()->functions();
 	GLfloat mat_diffuse[4] = {1.0f, 1.0f, 1.0f, 1.0f};
 	mat_diffuse[0] = mat.color_diffuse.redF();
 	mat_diffuse[1] = mat.color_diffuse.greenF();
 	mat_diffuse[2] = mat.color_diffuse.blueF();
 	mat_diffuse[3] = mat.color_diffuse.alphaF() * (1.f - mat.transparency);
-	QGLC glVertexAttrib4f(prog->attributeLocation("qgl_Color"), mat_diffuse[0], mat_diffuse[1], mat_diffuse[2], mat_diffuse[3]);
+	glFuncs->glVertexAttrib4f(prog->attributeLocation("qgl_Color"), mat_diffuse[0], mat_diffuse[1], mat_diffuse[2], mat_diffuse[3]);
 	prog->setUniformValue("qgl_Material.transparency", mat.transparency);
 	prog->setUniformValue("qgl_Material.reflectivity", mat.reflectivity);
 	prog->setUniformValue("qgl_Material.iof", mat.iof);
@@ -228,7 +228,7 @@ void setUniformLight(QOpenGLShaderProgram * prog, Light * light, QString ulightn
 	QVector4D pos(0, 0, 0, 1.), dir(light->direction);//, dir0(light->dir0), dir1(light->dir1);
 	pos = m * pos;
 	dir = (mat * dir).normalized();
-	double ang_start = light->angle_start / 2., ang_end = light->angle_end / 2.;
+	float ang_start = light->angle_start / 2.f, ang_end = light->angle_end / 2.f;
 	if (light->light_type == Light::Omni)
 		ang_start = ang_end = 180.;
 	//qDebug() << "light" << light->name() << ulightn << pos;
@@ -236,9 +236,9 @@ void setUniformLight(QOpenGLShaderProgram * prog, Light * light, QString ulightn
 	prog->setUniformValue((ulightn + ".direction").toLatin1().constData(), dir);
 	prog->setUniformValue((ulightn + ".intensity").toLatin1().constData(), GLfloat(light->intensity));
 	prog->setUniformValue((ulightn + ".startAngle").toLatin1().constData(), GLfloat(ang_start));
-	prog->setUniformValue((ulightn + ".startAngleCos").toLatin1().constData(), GLfloat(cos(ang_start * deg2rad)));
+	prog->setUniformValue((ulightn + ".startAngleCos").toLatin1().constData(), GLfloat(cosf(ang_start * deg2rad)));
 	prog->setUniformValue((ulightn + ".endAngle").toLatin1().constData(), GLfloat(ang_end));
-	prog->setUniformValue((ulightn + ".endAngleCos").toLatin1().constData(), GLfloat(cos(ang_end * deg2rad)));
+	prog->setUniformValue((ulightn + ".endAngleCos").toLatin1().constData(), GLfloat(cosf(ang_end * deg2rad)));
 	prog->setUniformValue((ulightn + ".color").toLatin1().constData(), light->color());
 	prog->setUniformValue((ulightn + ".constantAttenuation").toLatin1().constData(), GLfloat(light->decay_const));
 	prog->setUniformValue((ulightn + ".linearAttenuation").toLatin1().constData(), GLfloat(light->decay_linear));
diff --git a/qglview/glshaders.h b/qglview/glshaders.h
index a1435e8..62f8939 100644
--- a/qglview/glshaders.h
+++ b/qglview/glshaders.h
@@ -32,5 +32,4 @@ void setUniformMap(QOpenGLShaderProgram * prog, const Map & map, int channel, in
 void setUniformMaterial(QOpenGLShaderProgram * prog, const Material & mat);
 void setUniformLights(QOpenGLShaderProgram * prog, const QVector<Light*> & lights, const QMatrix4x4 & mat, int shadow_start);
 void setUniformLight(QOpenGLShaderProgram * prog, Light * light, QString ulightn, const QMatrix4x4 & mat = QMatrix4x4(), int shadow = 0);
-
 #endif // GLSHADERS_H
diff --git a/qglview/gltypes.cpp b/qglview/gltypes.cpp
index a95302b..fbececc 100644
--- a/qglview/gltypes.cpp
+++ b/qglview/gltypes.cpp
@@ -54,7 +54,6 @@ QString findFile(const QString & file, const QStringList & pathes) {
 
 
 void glDrawQuad(QOpenGLShaderProgram * prog, QVector4D * corner_dirs, GLfloat x, GLfloat y, GLfloat w, GLfloat h) {
-	QGLCI
 	glResetAllTransforms();
 	glSetPolygonMode(GL_FILL);
 	int loc = prog ? prog->attributeLocation("qgl_Color") : 0,
@@ -62,18 +61,19 @@ void glDrawQuad(QOpenGLShaderProgram * prog, QVector4D * corner_dirs, GLfloat x,
 		loct = prog ? prog->attributeLocation("qgl_Texture") : 0,
 		locc = prog ? prog->attributeLocation("view_corner") : 0;
 	glBegin(GL_QUADS);
-	if (prog) {QGLC glVertexAttrib3f(loc, 1.f, 1.f, 1.f);} glColor3f(1.f, 1.f, 1.f);
-	if (prog) {if (corner_dirs) prog->setAttributeValue(locc, corner_dirs[0]); QGLC glVertexAttrib2f(loct, 0.f, 0.f); QGLC glVertexAttrib2f(locv, x, y);} glTexCoord2f(0.f, 0.f); glVertex2f(x, y);
-	if (prog) {if (corner_dirs) prog->setAttributeValue(locc, corner_dirs[1]); QGLC glVertexAttrib2f(loct, 1.f, 0.f); QGLC glVertexAttrib2f(locv, x + w, y);} glTexCoord2f(1.f, 0.f); glVertex2f(x + w, y);
-	if (prog) {if (corner_dirs) prog->setAttributeValue(locc, corner_dirs[2]); QGLC glVertexAttrib2f(loct, 1.f, 1.f); QGLC glVertexAttrib2f(locv, x + w, y + h);} glTexCoord2f(1.f, 1.f); glVertex2f(x + w, y + h);
-	if (prog) {if (corner_dirs) prog->setAttributeValue(locc, corner_dirs[3]); QGLC glVertexAttrib2f(loct, 0.f, 1.f); QGLC glVertexAttrib2f(locv, x, y + h);} glTexCoord2f(0.f, 1.f); glVertex2f(x, y + h);
+	QOpenGLFunctions *glFuncs = QOpenGLContext::currentContext()->functions();
+	if (prog) {glFuncs->glVertexAttrib3f(loc, 1.f, 1.f, 1.f);} glColor3f(1.f, 1.f, 1.f);
+	if (prog) {if (corner_dirs) prog->setAttributeValue(locc, corner_dirs[0]); glFuncs->glVertexAttrib2f(loct, 0.f, 0.f); glFuncs->glVertexAttrib2f(locv, x, y);} glTexCoord2f(0.f, 0.f); glVertex2f(x, y);
+	if (prog) {if (corner_dirs) prog->setAttributeValue(locc, corner_dirs[1]); glFuncs->glVertexAttrib2f(loct, 1.f, 0.f); glFuncs->glVertexAttrib2f(locv, x + w, y);} glTexCoord2f(1.f, 0.f); glVertex2f(x + w, y);
+	if (prog) {if (corner_dirs) prog->setAttributeValue(locc, corner_dirs[2]); glFuncs->glVertexAttrib2f(loct, 1.f, 1.f); glFuncs->glVertexAttrib2f(locv, x + w, y + h);} glTexCoord2f(1.f, 1.f); glVertex2f(x + w, y + h);
+	if (prog) {if (corner_dirs) prog->setAttributeValue(locc, corner_dirs[3]); glFuncs->glVertexAttrib2f(loct, 0.f, 1.f); glFuncs->glVertexAttrib2f(locv, x, y + h);} glTexCoord2f(0.f, 1.f); glVertex2f(x, y + h);
 	glEnd();
 }
 
 
 QMatrix4x4 getGLMatrix(GLenum matrix) {
-	GLdouble gm[16];
-	glGetDoublev(matrix, gm);
+	GLfloat gm[16];
+	glGetFloatv(matrix, gm);
 	float qm[16];
 	for (int i = 0; i < 16; ++i)
 		qm[i] = gm[i];
@@ -82,22 +82,22 @@ QMatrix4x4 getGLMatrix(GLenum matrix) {
 
 
 void setGLMatrix(QMatrix4x4 matrix) {
-	GLdouble gm[16];
+	GLfloat gm[16];
 	float qm[16];
 	matrix.transposed().copyDataTo(qm);
 	for (int i = 0; i < 16; ++i)
 		gm[i] = qm[i];
-	glLoadMatrixd(gm);
+	glLoadMatrixf(gm);
 }
 
 
 void qglMultMatrix(const QMatrix4x4 & m) {
-	GLdouble gm[16];
+	GLfloat gm[16];
 	float qm[16];
 	m.transposed().copyDataTo(qm);
 	for (int i = 0; i < 16; ++i)
 		gm[i] = qm[i];
-	glMultMatrixd(gm);
+	glMultMatrixf(gm);
 }
 
 
@@ -109,7 +109,7 @@ void createGLTexture(GLuint & tex, int width, int height, const GLenum & format,
 	}
     //glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
 	if (format == GL_DEPTH_COMPONENT || format == GL_DEPTH_COMPONENT16 || format == GL_DEPTH_COMPONENT24 || format == GL_DEPTH_COMPONENT32)
-		glTexImage2D(target, 0, format, width, height, 0, GL_DEPTH_COMPONENT, GL_UNSIGNED_BYTE, 0);
+		glTexImage2D(target, 0, format, width, height, 0, GL_DEPTH_COMPONENT, GL_UNSIGNED_BYTE, nullptr);
 	else {
 		int t = GL_UNSIGNED_BYTE;
 		int f = GL_RGBA;
@@ -117,7 +117,7 @@ void createGLTexture(GLuint & tex, int width, int height, const GLenum & format,
 			t = GL_FLOAT;
 		if (format == GL_RGB32F || format == GL_RGB16F || format == GL_RGB8 || format == GL_RGB)
 			f = GL_RGB;
-		glTexImage2D(target, 0, format, width, height, 0, f, t, 0);
+		glTexImage2D(target, 0, format, width, height, 0, f, t, nullptr);
 		//glGenerateMipmap(target);
 		//qDebug() << "glTexImage2D" << width << height << QString::number(t, 16);
 	}
@@ -147,15 +147,15 @@ void createGLTexture(GLuint & tex, const QImage & image, const GLenum & format,
 }
 
 
-QMatrix4x4 glMatrixPerspective(double angle, double aspect, double near_, double far_) {
+QMatrix4x4 glMatrixPerspective(float angle, float aspect, float near_, float far_) {
 	QMatrix4x4 ret;
-	double t = 1. / (tan(angle * deg2rad / 2.)), e = 2.4e-7;
+	float t = 1.f / (tanf(angle * deg2rad / 2.f)), e = 2.4e-7f;
 	ret(0, 0) = t / aspect;
 	ret(1, 1) = t;
-	ret(2, 2) = e - 1.;//far_ / (far_ - near_) - 1.;
-	ret(2, 3) = (e - 2.) * near_;//2. * far_ * near_ / (far_ - near_);
-	ret(3, 2) = -1.;
-	ret(3, 3) = 0.;
+	ret(2, 2) = e - 1.f;//far_ / (far_ - near_) - 1.;
+	ret(2, 3) = (e - 2.f) * near_;//2. * far_ * near_ / (far_ - near_);
+	ret(3, 2) = -1.f;
+	ret(3, 3) = 0.f;
 	return ret;
 }
 
@@ -185,19 +185,19 @@ QImage rotateQImageRight(const QImage & im) {
 QColor colorFromString(const QString & str) {
 	QString s = str.trimmed();
 	int i = s.indexOf("\t");
-	double r, g, b;
+	float r, g, b;
 	r = s.left(i).toFloat(); s = s.right(s.length() - i - 1); i = s.indexOf("\t");
 	g = s.left(i).toFloat(); s = s.right(s.length() - i - 1);
 	b = s.toFloat();
-	return QColor(r * 255., g * 255., b * 255.);
+	return QColor(r * 255.f, g * 255.f, b * 255.f);
 }
 
 
-QVector3D orthToVector(const QVector3D & v, const double & scale) {
+QVector3D orthToVector(const QVector3D & v, const float & scale) {
 	if (v.isNull()) return QVector3D();
 	QVector3D rv, fn, sn;
-	if (v.x() != 0) rv.setZ(1.);
-	else if (v.y() != 0) rv.setX(1.);
+	if (v.x() != 0.f) rv.setZ(1.);
+	else if (v.y() != 0.f) rv.setX(1.);
 	else rv.setY(1.);
 	fn = QVector3D::crossProduct(v, rv).normalized();
 	sn = QVector3D::crossProduct(v, fn).normalized();
@@ -214,18 +214,18 @@ QVector3D rotateVector(const QVector3D & v, const QVector3D & a) {
 }
 
 
-void setVectorLength(QVector3D & v, const double & l) {
-	double vl = v.length();
-	if (vl == 0.) return;
-	double c = l / vl;
+void setVectorLength(QVector3D & v, const float & l) {
+	float vl = v.length();
+	if (vl == 0.f) return;
+	float c = l / vl;
 	v *= c;
 }
 
 
-void lengthenVector(QVector3D & v, const double & l) {
-	double vl = v.length();
-	if (l == 0. || vl == 0.) return;
-	double c = 1. + l / vl;
+void lengthenVector(QVector3D & v, const float & l) {
+	float vl = v.length();
+	if (l == 0.f || vl == 0.f) return;
+	float c = 1.f + l / vl;
 	v *= c;
 }
 
@@ -276,26 +276,32 @@ void glClearFramebuffer(const QColor & color, bool depth) {
 
 QGLViewBase::QGLViewBase() {
 	camera_ = new Camera();
+	textures_manager = new GLTextureManager();
 }
 
 
-Camera & QGLViewBase::camera() {
-	return *camera_;
+QGLViewBase::~QGLViewBase() {
+	delete textures_manager;
 }
 
 
-const Camera & QGLViewBase::camera() const {
-	return *camera_;
+Camera * QGLViewBase::camera() {
+	return camera_;
 }
 
 
-void QGLViewBase::setCamera(const Camera & camera) {
-	*camera_ = camera;
+const Camera * QGLViewBase::camera() const {
+	return camera_;
+}
+
+
+void QGLViewBase::setCamera(Camera * camera) {
+	camera_ = camera;
 }
 
 
 GLTextureManagerBase * QGLViewBase::textureManager() {
-	return m_texture_manager;
+	return textures_manager;
 }
 
 
@@ -307,9 +313,9 @@ Box3D::Box3D(const QVector<QVector3D> & points) {
 	iy = ay = points[0].y();
 	iz = az = points[0].z();
 	for (int i = 1; i < points.size(); ++i) {
-		ix = qMin<double>(ix, points[i].x()); ax = qMax<double>(ax, points[i].x());
-		iy = qMin<double>(iy, points[i].y()); ay = qMax<double>(ay, points[i].y());
-		iz = qMin<double>(iz, points[i].z()); az = qMax<double>(az, points[i].z());
+		ix = qMin<float>(ix, points[i].x()); ax = qMax<float>(ax, points[i].x());
+		iy = qMin<float>(iy, points[i].y()); ay = qMax<float>(ay, points[i].y());
+		iz = qMin<float>(iz, points[i].z()); az = qMax<float>(az, points[i].z());
 	}
 	x = ix;
 	y = iy;
diff --git a/qglview/gltypes.h b/qglview/gltypes.h
index 0c35ff1..3bf8aa5 100644
--- a/qglview/gltypes.h
+++ b/qglview/gltypes.h
@@ -110,8 +110,8 @@ typedef unsigned long ulong;
 typedef unsigned long long ullong;
 typedef long double ldouble;
 
-const double deg2rad = atan(1.) / 45.;
-const double rad2deg = 45. / atan(1.);
+const float deg2rad = atanf(1.f) / 45.f;
+const float rad2deg = 45.f / atanf(1.f);
 
 #  ifdef WINDOWS
 inline int random() {return rand();}
@@ -121,9 +121,9 @@ inline int random() {return rand();}
 #endif
 
 #ifdef CC_VC
-inline double round(const double & v) {return floor(v + 0.5);}
+inline float round(const float & v) {return floor(v + 0.5);}
 #endif
-inline double randomu() {return double(random()) / RAND_MAX;}
+inline float randomu() {return float(random()) / RAND_MAX;}
 
 inline const QSizeF operator *(const QSizeF & f, const QSizeF & s) {return QSizeF(f.width() * s.width(), f.height() * s.height());}
 #ifndef PIP_VERSION
@@ -136,13 +136,13 @@ template<typename Type> inline Type piClamp(const Type & v, const Type & min, co
 inline ushort letobe_s(ushort v) {return (v << 8) | (v >> 8);}
 #endif
 // return [-1, 1]
-inline double urand(const double & scale = 1.) {return ((double)rand() / RAND_MAX - .5) * (scale + scale);}
+inline float urand(const float & scale = 1.) {return ((float)rand() / RAND_MAX - .5f) * (scale + scale);}
 // return [0, 1]
-inline double uprand(const double & scale = 1.) {return ((double)rand() / RAND_MAX) * scale;}
+inline float uprand(const float & scale = 1.) {return ((float)rand() / RAND_MAX) * scale;}
 QString readCharsUntilNull(QDataStream & s);
 QString findFile(const QString & file, const QStringList & pathes);
-inline QColor operator *(const QColor & c, double v) {return QColor(c.red() * v, c.green() * v, c.blue() * v, c.alpha() * v);}
-inline QColor operator /(const QColor & c, double v) {return QColor(c.red() / v, c.green() / v, c.blue() / v, c.alpha() / v);}
+inline QColor operator *(const QColor & c, float v) {return QColor(c.red() * v, c.green() * v, c.blue() * v, c.alpha() * v);}
+inline QColor operator /(const QColor & c, float v) {return QColor(c.red() / v, c.green() / v, c.blue() / v, c.alpha() / v);}
 
 //extern __GLWidget__ * currentQGLView;
 
@@ -158,26 +158,26 @@ inline void glSetCapEnabled(GLenum cap, bool on = true) {if (on) glEnable(cap);
 inline void glSetLightEnabled(bool on) {if (on) glEnable(GL_LIGHTING); else glDisable(GL_LIGHTING);}
 inline void glSetFogEnabled(bool on) {if (on) glEnable(GL_FOG); else glDisable(GL_FOG);}
 inline void glSetPolygonMode(GLenum mode) {glPolygonMode(GL_FRONT_AND_BACK, mode);}
-void glDrawQuad(QOpenGLShaderProgram * prog = 0, QVector4D * corner_dirs = 0, GLfloat x = -1.f, GLfloat y = -1.f, GLfloat w = 2.f, GLfloat h = 2.f);
+void glDrawQuad(QOpenGLShaderProgram * prog = nullptr, QVector4D * corner_dirs = nullptr, GLfloat x = -1.f, GLfloat y = -1.f, GLfloat w = 2.f, GLfloat h = 2.f);
 QMatrix4x4 getGLMatrix(GLenum matrix);
 void setGLMatrix(QMatrix4x4 matrix);
 inline void deleteGLTexture(GLuint & tex) {if (tex != 0) glDeleteTextures(1, &tex); tex = 0;}
-#  define QGLCI if (!QOpenGLContext::currentContext()) return; QOpenGLExtraFunctions gf(QOpenGLContext::currentContext());
-#  define QGLC gf.
-inline void glActiveTextureChannel(int channel) {QGLCI gf.glActiveTexture(GL_TEXTURE0 + channel);}
-inline void glDisableTextures(int channels = 8) {QGLCI for (int i = channels - 1; i >= 0; --i) {glActiveTextureChannel(i); glDisable(GL_TEXTURE_2D); glDisable(GL_TEXTURE_CUBE_MAP);}}
-inline void glReleaseTextures(int channels = 8) {QGLCI for (int i = channels - 1; i >= 0; --i) {glActiveTextureChannel(i); glBindTexture(GL_TEXTURE_2D, 0); glBindTexture(GL_TEXTURE_CUBE_MAP, 0);}}
-inline void glReleaseFramebuffer() {QGLCI gf.glBindFramebuffer(GL_FRAMEBUFFER, 0);}
-inline void glReleaseShaders() {QGLCI gf.glUseProgram(0);}
-inline void deleteGLFramebuffer(GLuint & fbo) {QGLCI if (fbo != 0) gf.glDeleteFramebuffers(1, &fbo); fbo = 0;}
-inline void deleteGLRenderbuffer(GLuint & drbo) {QGLCI if (drbo != 0) gf.glDeleteRenderbuffers(1, &drbo); drbo = 0;}
-inline void deleteGLBuffer(GLuint & bo) {QGLCI if (bo != 0) gf.glDeleteBuffers(1, &bo); bo = 0;}
-inline void deleteGLVertexArray(GLuint & va) {QGLCI if (va != 0) gf.glDeleteVertexArrays(1, &va); va = 0;}
+//#  define QGLCI if (!QOpenGLContext::currentContext()) return; QOpenGLExtraFunctions gf(QOpenGLContext::currentContext());
+//#  define QGLC gf.
+//inline void glActiveTextureChannel(int channel) {QGLCI gf.glActiveTexture(GL_TEXTURE0 + channel);}
+//inline void glDisableTextures(int channels = 8) {QGLCI for (int i = channels - 1; i >= 0; --i) {glActiveTextureChannel(i); glDisable(GL_TEXTURE_2D); glDisable(GL_TEXTURE_CUBE_MAP);}}
+//inline void glReleaseTextures(int channels = 8) {QGLCI for (int i = channels - 1; i >= 0; --i) {glActiveTextureChannel(i); glBindTexture(GL_TEXTURE_2D, 0); glBindTexture(GL_TEXTURE_CUBE_MAP, 0);}}
+//inline void glReleaseFramebuffer() {QGLCI gf.glBindFramebuffer(GL_FRAMEBUFFER, 0);}
+//inline void glReleaseShaders() {QGLCI gf.glUseProgram(0);}
+//inline void deleteGLFramebuffer(GLuint & fbo) {QGLCI if (fbo != 0) gf.glDeleteFramebuffers(1, &fbo); fbo = 0;}
+//inline void deleteGLRenderbuffer(GLuint & drbo) {QGLCI if (drbo != 0) gf.glDeleteRenderbuffers(1, &drbo); drbo = 0;}
+//inline void deleteGLBuffer(GLuint & bo) {QGLCI if (bo != 0) gf.glDeleteBuffers(1, &bo); bo = 0;}
+//inline void deleteGLVertexArray(GLuint & va) {QGLCI if (va != 0) gf.glDeleteVertexArrays(1, &va); va = 0;}
 void createGLTexture(GLuint & tex, int width, int height, const GLenum & format = GL_RGBA8, const GLenum & target = GL_TEXTURE_2D);
 void createGLTexture(GLuint & tex, const QImage & image, const GLenum & format = GL_RGBA8, const GLenum & target = GL_TEXTURE_2D);
-inline void qglTranslate(const QVector3D & v) {glTranslated(v.x(), v.y(), v.z());}
-inline void qglScale(const QVector3D & v) {glScaled(v.x(), v.y(), v.z());}
-QMatrix4x4 glMatrixPerspective(double angle, double aspect, double near_, double far_);
+inline void qglTranslate(const QVector3D & v) {glTranslatef(v.x(), v.y(), v.z());}
+inline void qglScale(const QVector3D & v) {glScalef(v.x(), v.y(), v.z());}
+QMatrix4x4 glMatrixPerspective(float angle, float aspect, float near_, float far_);
 QImage rotateQImageLeft(const QImage & im);
 QImage rotateQImageRight(const QImage & im);
 inline QImage rotateQImage180(const QImage & im) {return im.mirrored(true, true);}
@@ -197,11 +197,11 @@ struct Box3D {
 	Box3D() {x = y = z = width = length = height = angle_z = angle_xy = angle_roll = 0.f;}
 	Box3D(const QVector3D & center, GLfloat hwid, GLfloat hlen, GLfloat hhei) {x = center.x() - hwid; y = center.y() - hlen; z = center.z() - hhei; width = 2 * hwid; length = 2 * hlen; height = 2 * hhei; angle_z = angle_xy = angle_roll = 0.f;}
 	Box3D(const QVector<QVector3D> & points);
-	bool isEmpty() const {return (qAbs(width) < 1E-6) || (qAbs(length) < 1E-6) || (qAbs(height) < 1E-6);}
+	bool isEmpty() const {return (qAbs(width) < 1E-6f) || (qAbs(length) < 1E-6f) || (qAbs(height) < 1E-6f);}
 	QVector3D randomPoint() const {return QVector3D(uprand(length) + x, uprand(width) + y, uprand(height) + z);}
 	QVector3D pos() const {return QVector3D(x, y, z);}
 	QVector3D size() const {return QVector3D(length, width, height);}
-	QVector3D center() const {return QVector3D(length / 2. + x, width / 2. + y, height / 2. + z);}
+	QVector3D center() const {return QVector3D(length / 2.f + x, width / 2.f + y, height / 2.f + z);}
 	QVector3D angles() const {return QVector3D(angle_xy, angle_roll, angle_z);}
 	QVector<QVector3D> corners() const;
 	void setPos(const QVector3D & p) {x = p.x(); y = p.y(); z = p.z();}
@@ -228,14 +228,14 @@ struct Vector3d {
 	Vector3d(const QVector3D & v) {x = v.x(); y = v.y(); z = v.z();}
 	Vector3d(const QString & str);
 	inline void clear() {x = y = z = 0.;}
-	inline GLfloat length() const {return sqrt(x*x + y*y + z*z);}
+	inline GLfloat length() const {return sqrtf(x*x + y*y + z*z);}
 	inline GLfloat lengthSquared() const {return x*x + y*y + z*z;}
 	Vector3d & normalize() {
 		GLfloat l = length();
-		if (l == 0.) return *this;
+		if (l == 0.f) return *this;
 		x /= l; y /= l; z /= l;
 		return *this;
-	};
+	}
 	Vector3d normalized() {return Vector3d(*this).normalize();}
 	Vector3d projectTo(Vector3d dir) {dir.normalize(); return dir * dot(dir, *this);}
 	Vector3d operator *(const GLfloat v) {return Vector3d(x*v, y*v, z*v);}
@@ -309,19 +309,19 @@ inline QDataStream & operator <<(QDataStream & s, const Vector3i & v) {s << v.p0
 inline QDataStream & operator >>(QDataStream & s, Vector3i & v)       {s >> v.p0 >> v.p1 >> v.p2; return s;}
 
 QColor colorFromString(const QString & str);
-inline double cosABV(const QVector3D & v0, const QVector3D & v1) {
-	double l = v0.length() * v1.length();
-	if (l == 0.) return 0.;
+inline float cosABV(const QVector3D & v0, const QVector3D & v1) {
+	float l = v0.length() * v1.length();
+	if (l == 0.f) return 0.;
 	return (QVector3D::dotProduct(v0, v1)) / l;
 }
 inline QVector3D projection(const QVector3D & v, const QVector3D & to) {return to.normalized() * v.length() * cosABV(v, to);}
-QVector3D orthToVector(const QVector3D & v, const double & scale = 1.);
+QVector3D orthToVector(const QVector3D & v, const float & scale = 1.);
 QVector3D rotateVector(const QVector3D & v, const QVector3D & a);
-void setVectorLength(QVector3D & v, const double & l);
-void lengthenVector(QVector3D & v, const double & l);
-inline double squareLength(const QVector3D & from, const QVector3D & to) {return (to.x() - from.x())*(to.x() - from.x()) + (to.y() - from.y())*(to.y() - from.y()) + (to.z() - from.z())*(to.z() - from.z());}
+void setVectorLength(QVector3D & v, const float & l);
+void lengthenVector(QVector3D & v, const float & l);
+inline float squareLength(const QVector3D & from, const QVector3D & to) {return (to.x() - from.x())*(to.x() - from.x()) + (to.y() - from.y())*(to.y() - from.y()) + (to.z() - from.z())*(to.z() - from.z());}
 inline QVector3D directionFromAngles(const QVector3D & a) {return rotateVector(QVector3D(1., 0., 0.), a);}
-inline double frac(const double & x, const double & b) {return x - int(x / b) * b;}
+inline float frac(const float & x, const float & b) {return x - int(x / b) * b;}
 
 class GLObjectBase;
 class QGLView;
@@ -334,14 +334,15 @@ class QGLViewBase
 	friend class GLObjectBase;
 public:
 	QGLViewBase();
-	Camera & camera();
-	const Camera & camera() const;
-	void setCamera(const Camera & camera);
+	virtual ~QGLViewBase();
+	Camera * camera();
+	const Camera * camera() const;
+	void setCamera(Camera * camera);
 	GLTextureManagerBase * textureManager();
 protected:
 	virtual void collectLights() = 0;
 	Camera * camera_;
-	GLTextureManagerBase * m_texture_manager;
+	GLTextureManagerBase * textures_manager;
 };
 
 #endif // GLTYPES_H
diff --git a/qglview/glvbo.cpp b/qglview/glvbo.cpp
index c2219e5..83e031b 100644
--- a/qglview/glvbo.cpp
+++ b/qglview/glvbo.cpp
@@ -43,8 +43,10 @@ void GLVBO::init() {
 
 
 void GLVBO::destroy() {
-	deleteGLBuffer(buffer_);
-	//deleteGLVertexArray(va_);
+	if (buffer_ != 0) glDeleteFramebuffers(1, &buffer_);
+	buffer_ = 0;
+//	if (va_ != 0) glDeleteVertexArrays(1, &va_);
+//	va_ = 0;
 }
 
 
diff --git a/qglview/glwidget.cpp b/qglview/glwidget.cpp
index e97228e..9e2c140 100644
--- a/qglview/glwidget.cpp
+++ b/qglview/glwidget.cpp
@@ -13,4 +13,23 @@ GLWidget::GLWidget(QWidget *parent) : QWidget(parent)
 	lay->setContentsMargins(0, 0, 0, 0);
 	lay->setSpacing(0);
 	setMouseTracking(true);
+	connect(view_, &QGLView::doubleClick, this, &GLWidget::viewDoubleClicked);
+}
+
+
+void GLWidget::viewDoubleClicked() {
+//	qDebug() << "click widget!!";
+	if (view_->windowState() == Qt::WindowFullScreen) {
+//		view_->hide();
+		container = QWidget::createWindowContainer(view_, this);
+		lay->addWidget(container);
+		container->show();
+//		show();
+	} else {
+//		hide();
+		view_->setParent(nullptr);
+		view_->showFullScreen();
+		lay->removeWidget(container);
+	}
+//	qDebug() << "click widge done!";
 }
diff --git a/qglview/glwidget.h b/qglview/glwidget.h
index a1e6aa9..6a118e3 100644
--- a/qglview/glwidget.h
+++ b/qglview/glwidget.h
@@ -15,6 +15,9 @@ public:
 
 public slots:
 
+private slots:
+	void viewDoubleClicked();
+
 private:
 	QWidget * container;
 	QGLView * view_;
diff --git a/qglview/loader_3ds.cpp b/qglview/loader_3ds.cpp
index 7f43161..39811fb 100644
--- a/qglview/loader_3ds.cpp
+++ b/qglview/loader_3ds.cpp
@@ -37,11 +37,11 @@ void Loader3DS::init3DSMesh(GLObjectBase * o, const QVector<uint> & smooth) {
 		v2 = points[cf.p2];
 		fnormals[i] = ((v1 - v0) * (v2 - v0)).normalized();
 	}
-	uint fcnt = faces.size() * 3;
+	int fcnt = faces.size() * 3;
 	vertices.resize(fcnt * 3);
 	normals.resize(vertices.size());
 	if (has_uv) uvs.resize(fcnt * 2);
-	uint ind = 0, induv = 0, ncnt0, ncnt1, ncnt2, csg;
+	int ind = 0, induv = 0, ncnt0, ncnt1, ncnt2, csg;
 	//qDebug() << faces.size();
 	if (smooth.isEmpty()) {
 		for (int i = 0; i < faces.size(); ++i) {
@@ -129,18 +129,18 @@ Material Loader3DS::materialByName(const QVector<Material> & materials, const QS
 }
 
 
-GLObjectBase * loadFrom3DSFile(const QString & filepath, double scale) {
+GLObjectBase * loadFrom3DSFile(const QString & filepath, float scale) {
 	QFile f(filepath);
 	if (!f.exists()) {
 		qDebug() << "[Loader 3DS] Error: can`t open \"" + filepath + "\"";
-		return 0;
+		return nullptr;
 	}
 	f.open(QIODevice::ReadOnly);
 	QDataStream stream(&f);
 	QVector<Material> materials;
 	QVector<uint> smooth;
 	QVector<ushort> face_mats;
-	GLObjectBase * root = new GLObjectBase(), * co = 0;
+	GLObjectBase * root = new GLObjectBase(), * co = nullptr;
 	Material mat;
 	Loader3DS::Chunk cc;
 	Loader3DS::Face face;
@@ -159,7 +159,7 @@ GLObjectBase * loadFrom3DSFile(const QString & filepath, double scale) {
 			case LOADER_3DS_CHUNK_MAIN: /*qDebug() << "main" << cc.size;*/ break;
 			case LOADER_3DS_CHUNK_OBJECTS: /*qDebug() << " objects" << cc.size;*/ break;
 			case LOADER_3DS_CHUNK_OBJECT:
-				if (co != 0) {
+				if (co != nullptr) {
 					Loader3DS::init3DSMesh(co, smooth);
 					root->addChild(co);
 				}
@@ -257,7 +257,7 @@ GLObjectBase * loadFrom3DSFile(const QString & filepath, double scale) {
 				stream.skipRawData(cc.size - 6);
 				fl = globject_cast<Light * >(co)->decay_end;
 				//fl1 = globject_cast<Light * >(co)->decay_start;
-				globject_cast<Light * >(co)->decay_quadratic = 4. / fl;
+				globject_cast<Light * >(co)->decay_quadratic = 4.f / fl;
 				//qDebug() << "decay" << globject_cast<Light * >(co)->decay_quadratic;
 				break;
 			case LOADER_3DS_CHUNK_COLOR_F:
@@ -337,7 +337,7 @@ GLObjectBase * loadFrom3DSFile(const QString & filepath, double scale) {
 		materials << mat;
 	foreach (const Material & m, materials)
 		qDebug() << m.name;
-	if (co != 0) {
+	if (co != nullptr) {
 		Loader3DS::init3DSMesh(co, smooth);
 		root->addChild(co);
 	}
diff --git a/qglview/loader_3ds.h b/qglview/loader_3ds.h
index 8152262..2eeeb3d 100644
--- a/qglview/loader_3ds.h
+++ b/qglview/loader_3ds.h
@@ -72,6 +72,6 @@ namespace Loader3DS {
 	Material materialByName(const QVector<Material> & materials, const QString & name);
 }
 
-GLObjectBase * loadFrom3DSFile(const QString & filepath, double scale = 1.0);
+GLObjectBase * loadFrom3DSFile(const QString & filepath, float scale = 1.0);
 
 #endif // LOADER_3DS_H
diff --git a/qglview/loader_ase.cpp b/qglview/loader_ase.cpp
index ad7e380..c5244f9 100644
--- a/qglview/loader_ase.cpp
+++ b/qglview/loader_ase.cpp
@@ -27,7 +27,7 @@ void LoaderASE::initASEMesh(GLObjectBase * o) {
 	bool has_uv = !puvws.isEmpty(), has_norms = !fnormals.isEmpty();
 	Vector3i cf;
 	Vector3d v0, v1, v2, cn0, cn1, cn2;
-	uint ni = 0;
+	int ni = 0;
 	for (int i = 0; i < points.size(); ++i)
 		points[i] -= pos;
 	if (!has_norms) {
@@ -43,11 +43,11 @@ void LoaderASE::initASEMesh(GLObjectBase * o) {
 			fnormals[ni] = cn0; ++ni;
 		}
 	}
-	uint fcnt = faces.size() * 3;
+	int fcnt = faces.size() * 3;
 	vertices.resize(fcnt * 3);
 	normals.resize(vertices.size());
 	if (has_uv) uvs.resize(fcnt * 2);
-	uint ind = 0, induv = 0;
+	int ind = 0, induv = 0;
 	qDebug() << "init ase" << faces.size() << "faces";
 	ni = 0;
 	for (int i = 0; i < faces.size(); ++i) {
@@ -79,15 +79,15 @@ void LoaderASE::initASEMesh(GLObjectBase * o) {
 }
 
 
-GLObjectBase * loadFromASEFile(const QString & filepath, double scale) {
+GLObjectBase * loadFromASEFile(const QString & filepath, float scale) {
 	QFile f(filepath);
 	if (!f.exists()) {
 		qDebug() << "[Loader ASE] Error: can`t open" << filepath;
-		return 0;
+		return nullptr;
 	}
 	f.open(QIODevice::ReadOnly);
 	//QVector<Material> materials;
-	GLObjectBase * root = new GLObjectBase(), * co = 0;
+	GLObjectBase * root = new GLObjectBase(), * co = nullptr;
 	root->setName(QFileInfo(f).baseName());
 	QTextStream stream(&f);
 	QVector<Material> materials;
@@ -95,7 +95,8 @@ GLObjectBase * loadFromASEFile(const QString & filepath, double scale) {
 	QVector<Vector3i> faces, uvws;
 	QVector<Vector3d> normals;
 	Vector3d cv;
-	int mst = -1, pst;//, mat_ind;
+	int mst = -1;//, mat_ind;
+	qint64 pst;
 	QString line, cname;
 
 
@@ -121,7 +122,7 @@ GLObjectBase * loadFromASEFile(const QString & filepath, double scale) {
 			if (line.left(17) == "*MATERIAL_DIFFUSE") {materials[i].color_diffuse = colorFromString(line.right(line.length() - 18)); continue;} //qDebug() << "diffuse " << i << " = " << colorFromString(line.right(line.length() - 18));
 			if (line.left(18) == "*MATERIAL_SPECULAR") {materials[i].color_specular = colorFromString(line.right(line.length() - 19)); continue;} //qDebug() << "specular " << i << " = " << colorFromString(line.right(line.length() - 19));
 			if (line.left(23) == "*MATERIAL_SHINESTRENGTH") {materials[i].map_specular.color_amount = line.right(line.length() - 24).toFloat(); continue;}
-			if (line.left(15) == "*MATERIAL_SHINE") {materials[i].map_specularity.color_amount = 2. / exp(line.right(line.length() - 16).toFloat()); continue;}
+			if (line.left(15) == "*MATERIAL_SHINE") {materials[i].map_specularity.color_amount = 2.f / expf(line.right(line.length() - 16).toFloat()); continue;}
 			if (line.left(22) == "*MATERIAL_TRANSPARENCY") {materials[i].transparency = line.right(line.length() - 23).toFloat(); continue;}
 			if (line.left(12) == "*MAP_DIFFUSE") {
 				line = stream.readLine().trimmed();
@@ -167,7 +168,7 @@ GLObjectBase * loadFromASEFile(const QString & filepath, double scale) {
 			if (line.indexOf("GEOMOBJECT {") >= 0) cotype = 0;
 			if (line.indexOf("LIGHTOBJECT {") >= 0) cotype = 1;
 			mst = -1;
-			if (co != 0) {
+			if (co != nullptr) {
 				co->points = points;
 				co->faces = faces;
 				co->normals = normals;
@@ -367,7 +368,7 @@ GLObjectBase * loadFromASEFile(const QString & filepath, double scale) {
 		mst = -1;
 	}
 	f.close();
-	if (co != 0) {
+	if (co != nullptr) {
 		co->points = points;
 		co->faces = faces;
 		co->normals = normals;
diff --git a/qglview/loader_ase.h b/qglview/loader_ase.h
index 4b38d3a..050e77e 100644
--- a/qglview/loader_ase.h
+++ b/qglview/loader_ase.h
@@ -28,6 +28,6 @@ namespace LoaderASE {
 	void initASEMesh(GLObjectBase * o);
 }
 
-GLObjectBase * loadFromASEFile(const QString & filepath, double scale = 1.0);
+GLObjectBase * loadFromASEFile(const QString & filepath, float scale = 1.0);
 
 #endif // LOADER_ASE_H
diff --git a/qglview/loader_dae.cpp b/qglview/loader_dae.cpp
index aa382b4..082994e 100644
--- a/qglview/loader_dae.cpp
+++ b/qglview/loader_dae.cpp
@@ -45,8 +45,8 @@ QVector4D readXMLVector(QDomElement n) {
 	QStringList sl(n.firstChild().nodeValue().trimmed().split(" "));
 	sl.removeAll("");
 	sl.removeAll(" ");
-	if (sl.size() == 3) return QVector4D(sl[0].toDouble(), sl[1].toDouble(), sl[2].toDouble(), 0.);
-	if (sl.size() == 4) return QVector4D(sl[0].toDouble(), sl[1].toDouble(), sl[2].toDouble(), sl[3].toDouble());
+	if (sl.size() == 3) return QVector4D(sl[0].toFloat(), sl[1].toFloat(), sl[2].toFloat(), 0.);
+	if (sl.size() == 4) return QVector4D(sl[0].toFloat(), sl[1].toFloat(), sl[2].toFloat(), sl[3].toFloat());
 	return QVector4D();
 }
 
@@ -60,13 +60,13 @@ QMatrix4x4 readXMLMatrix(QDomElement n) {
 	int ind = -1;
 	for (int r = 0; r < 4; ++r)
 		for (int c = 0; c < 4; ++c)
-			m(r, c) = sl[++ind].toDouble();
+			m(r, c) = sl[++ind].toFloat();
 	return m;
 }
 
 
-double readXMLFloat(QDomElement n) {
-	return n.firstChildElement("float").firstChild().nodeValue().toDouble();
+float readXMLFloat(QDomElement n) {
+	return n.firstChildElement("float").firstChild().nodeValue().toFloat();
 }
 
 
@@ -140,9 +140,9 @@ QVector<Material> LoaderDAE::readMaterials(QDomElement le, QDomElement li, bool
 		if (col.isValid()) mat.color_diffuse = col;
 		col = readXMLColor(pn.firstChildElement("specular"));
 		if (col.isValid()) mat.color_specular = col;
-		mat.map_specularity.color_amount = 2. / exp(readXMLFloat(pn.firstChildElement("shininess")));
+		mat.map_specularity.color_amount = 2.f / expf(readXMLFloat(pn.firstChildElement("shininess")));
 		mat.transparency = readXMLFloat(pn.firstChildElement("transparency"));
-		if (!fbx) mat.transparency = 1. - mat.transparency;
+		if (!fbx) mat.transparency = 1.f - mat.transparency;
 		text = readXMLTexture(pn.firstChildElement("diffuse"), prof, li);
 		if (!text.isEmpty()) mat.map_diffuse.bitmap_path = text;
 		text = readXMLTexture(pn.firstChildElement("diffuse"), prof, li);
@@ -221,18 +221,18 @@ void readScene(QDomElement n, QMatrix4x4 cm, QVector<QPair<QPair<QString, QStrin
 }
 
 
-GLObjectBase * loadFromDAEFile(const QString & filepath, double scale) {
+GLObjectBase * loadFromDAEFile(const QString & filepath, float scale) {
 	QFile f(filepath);
 	if (!f.exists()) {
 		qDebug() << "[Loader DAE] Error: can`t open \"" + filepath + "\"";
-		return 0;
+		return nullptr;
 	}
 	QTime tm;
 	tm.restart();
 	QDomDocument dom(filepath);
 	if (!dom.setContent(&f)) {
 		qDebug() << "[Loader DAE] Error: can`t parse \"" + filepath + "\"";
-		return 0;
+		return nullptr;
 	}
 	//qDebug() << "parse" << tm.elapsed();
 	tm.restart();
@@ -240,7 +240,7 @@ GLObjectBase * loadFromDAEFile(const QString & filepath, double scale) {
 	bool fbx = maine.firstChildElement("asset").firstChildElement("contributor").firstChildElement("authoring_tool").firstChild().nodeValue().startsWith("FBX");
 	QVector<Material> materials = LoaderDAE::readMaterials(maine.firstChildElement("library_effects"),
 														   maine.firstChildElement("library_images"), fbx);
-	GLObjectBase * root = new GLObjectBase(), * co = 0;
+	GLObjectBase * root = new GLObjectBase(), * co = nullptr;
 	QMap<QString, QVector<GLObjectBase * > > objects;
 	
 	QMap<QString, QString> mat_names;
@@ -293,9 +293,9 @@ GLObjectBase * loadFromDAEFile(const QString & filepath, double scale) {
 			sl.removeAll(" ");
 			for (int c = 0; c < sl.size(); c += stride) {
 				Vector3d v;
-				if (stride >= 1) v.x = sl[c].toDouble();
-				if (stride >= 2) v.y = sl[c + 1].toDouble();
-				if (stride >= 3) v.z = sl[c + 2].toDouble();
+				if (stride >= 1) v.x = sl[c].toFloat();
+				if (stride >= 2) v.y = sl[c + 1].toFloat();
+				if (stride >= 3) v.z = sl[c + 2].toFloat();
 				sd << v;
 			}
 //qDebug() << "  found source" << id << "stride =" << stride << ":" << sd;
@@ -324,12 +324,12 @@ GLObjectBase * loadFromDAEFile(const QString & filepath, double scale) {
 				QDomElement di = einp.at(k).toElement();
 				QString src = di.attribute("source"), sem = di.attribute("semantic").toLower();
 				int offset = di.attribute("offset").toInt();
-				QVector<GLfloat> * curv = 0;
+				QVector<GLfloat> * curv = nullptr;
 				int pccnt = 0;
 				if (sem == "vertex") {curv = &vertices; pccnt = 3;}
 				if (sem == "normal") {curv = &normals; pccnt = 3;}
 				if (sem == "texcoord") {curv = &uvs; pccnt = 2;}
-				if (curv == 0) continue;
+				if (curv == nullptr) continue;
 				if (src.startsWith("#")) src.remove(0, 1);
 				QVector<Vector3d> & data(source_data[source_names.value(src, src)]);
 				for (int ii = offset; ii < p.size(); ii += pbv) {
@@ -363,17 +363,17 @@ GLObjectBase * loadFromDAEFile(const QString & filepath, double scale) {
 		}
 		lo->setColor(readXMLColor(dl));
 		QDomNodeList ml = dn.elementsByTagName("multiplier");
-		if (!ml.isEmpty()) lo->intensity = ml.at(0).firstChild().nodeValue().toDouble();
+		if (!ml.isEmpty()) lo->intensity = ml.at(0).firstChild().nodeValue().toFloat();
 		ml = dn.elementsByTagName("intensity");
-		if (!ml.isEmpty()) lo->intensity = ml.at(0).firstChild().nodeValue().toDouble();
+		if (!ml.isEmpty()) lo->intensity = ml.at(0).firstChild().nodeValue().toFloat();
 		QString sv;
-		sv = dl.firstChildElement("constant_attenuation").firstChild().nodeValue(); if (!sv.isEmpty()) lo->decay_const = sv.toDouble();
-		sv = dl.firstChildElement("linear_attenuation").firstChild().nodeValue(); if (!sv.isEmpty()) lo->decay_linear = sv.toDouble();
-		sv = dl.firstChildElement("quadratic_attenuation").firstChild().nodeValue(); if (!sv.isEmpty()) lo->decay_quadratic = sv.toDouble();
+		sv = dl.firstChildElement("constant_attenuation").firstChild().nodeValue(); if (!sv.isEmpty()) lo->decay_const = sv.toFloat();
+		sv = dl.firstChildElement("linear_attenuation").firstChild().nodeValue(); if (!sv.isEmpty()) lo->decay_linear = sv.toFloat();
+		sv = dl.firstChildElement("quadratic_attenuation").firstChild().nodeValue(); if (!sv.isEmpty()) lo->decay_quadratic = sv.toFloat();
 		///lo->setTransform(matrices.value(name));
 		if (lo->light_type == Light::Cone) {
-			ml = dn.elementsByTagName("decay_falloff"); if (!ml.isEmpty()) lo->angle_end = ml.at(0).firstChild().nodeValue().toDouble();
-			ml = dn.elementsByTagName("hotspot_beam"); if (!ml.isEmpty()) lo->angle_start = ml.at(0).firstChild().nodeValue().toDouble();
+			ml = dn.elementsByTagName("decay_falloff"); if (!ml.isEmpty()) lo->angle_end = ml.at(0).firstChild().nodeValue().toFloat();
+			ml = dn.elementsByTagName("hotspot_beam"); if (!ml.isEmpty()) lo->angle_start = ml.at(0).firstChild().nodeValue().toFloat();
 		}
 		QVector<GLObjectBase*> ol;
 		ol << lo;
@@ -423,7 +423,7 @@ GLObjectBase * loadFromDAEFile(const QString & filepath, double scale) {
 		for (int j = 0; j < dol[i].size(); ++j)
 			delete dol[i][j];
 	
-	root->setScale(0.001);
+	root->setScale(0.001f);
 	qDebug() << "[Loader DAE] Loaded" << root->childCount() << "objects from" << filepath;
 	return root;
 }
diff --git a/qglview/loader_dae.h b/qglview/loader_dae.h
index 95798c6..42da2e6 100644
--- a/qglview/loader_dae.h
+++ b/qglview/loader_dae.h
@@ -30,6 +30,6 @@ namespace LoaderDAE {
 	QVector<Material> readMaterials(QDomElement le, QDomElement li, bool fbx);
 }
 
-GLObjectBase * loadFromDAEFile(const QString & filepath, double scale = 1.0);
+GLObjectBase * loadFromDAEFile(const QString & filepath, float scale = 1.0);
 
 #endif // LOADER_DAE_H
diff --git a/qglview/loader_obj.cpp b/qglview/loader_obj.cpp
index e88ed27..c4bce7f 100644
--- a/qglview/loader_obj.cpp
+++ b/qglview/loader_obj.cpp
@@ -28,11 +28,11 @@ void LoaderOBJ::initOBJMesh(GLObjectBase * o, const QVector<Vector3d> & src_vert
 	Vector3d v[3], t[3], n[3];
 	//for (int i = 0; i < points.size(); ++i)
 	//	points[i] -= pos;
-	uint fcnt = faces.size() * 3;
+	int fcnt = faces.size() * 3;
 	vertices.resize(fcnt * 3);
 	normals.resize(vertices.size());
 	if (has_uv) uvs.resize(fcnt * 2);
-	uint ind = 0, induv = 0;
+	int ind = 0, induv = 0;
 	//qDebug() << "initOBJMesh" << faces.size();
 	for (int i = 0; i < faces.size(); ++i) {
 		cf = faces[i];
@@ -74,9 +74,9 @@ Vector3d readVector3d(QString s) {
 	Vector3d ret;
 	QStringList sl(s.trimmed().split(" "));
 	sl.removeAll(""); sl.removeAll(" ");
-	if (sl.size() > 0) ret.x = sl[0].toDouble();
-	if (sl.size() > 1) ret.y = sl[1].toDouble();
-	if (sl.size() > 2) ret.z = sl[2].toDouble();
+	if (sl.size() > 0) ret.x = sl[0].toFloat();
+	if (sl.size() > 1) ret.y = sl[1].toFloat();
+	if (sl.size() > 2) ret.z = sl[2].toFloat();
 	return ret;
 }
 
@@ -85,8 +85,8 @@ Vector2d readVector2d(QString s) {
 	Vector2d ret;
 	QStringList sl(s.trimmed().split(" "));
 	sl.removeAll(""); sl.removeAll(" ");
-	if (sl.size() > 0) ret.x = sl[0].toDouble();
-	if (sl.size() > 1) ret.y = sl[1].toDouble();
+	if (sl.size() > 0) ret.x = sl[0].toFloat();
+	if (sl.size() > 1) ret.y = sl[1].toFloat();
 	return ret;
 }
 
@@ -157,18 +157,18 @@ QVector<Material> readMTL(QString obj_path, QString path) {
 		if (line.startsWith("Ks")) {
 			Vector3d v = readVector3d(line.mid(2).trimmed());
 			mat.map_specular.color_amount = v.length();
-			double mc = qMax(v.x, qMax(v.y, v.z));
-			if (mc > 0.) v /= mc;
+			float mc = qMax(v.x, qMax(v.y, v.z));
+			if (mc > 0.f) v /= mc;
 			mat.color_specular = QColor::fromRgbF(v.x, v.y, v.z);
 			//qDebug() << mat.shine_strength << mat.color_specular;
 			continue;
 		}
 		if (line.startsWith("Ns")) {
-			mat.map_specularity.color_amount = 2. / exp(line.mid(2).trimmed().toDouble());
+			mat.map_specularity.color_amount = 2.f / expf(line.mid(2).trimmed().toFloat());
 			continue;
 		}
 		if (line.startsWith("d")) {
-			mat.transparency = 1. - line.mid(1).trimmed().toDouble();
+			mat.transparency = 1.f - line.mid(1).trimmed().toFloat();
 			continue;
 		}
 		if (line.startsWith("map_Kd")) {
@@ -181,7 +181,7 @@ QVector<Material> readMTL(QString obj_path, QString path) {
 				line = line.mid(3).trimmed();
 				QString sv = line.left(line.indexOf(" "));
 				line = line.mid(sv.size()).trimmed();
-				mat.map_normal.color_amount = sv.toDouble();
+				mat.map_normal.color_amount = sv.toFloat();
 			}
 			mat.map_normal.bitmap_path = findFile(line, sp);
 			//qDebug() << "BUMP" << mat.name << mat.bump_scale << mat.bump.bitmap_path;
@@ -203,17 +203,17 @@ Material LoaderOBJ::materialByName(const QVector<Material> & materials, const QS
 }
 
 
-GLObjectBase * loadFromOBJFile(const QString & filepath, double scale) {
+GLObjectBase * loadFromOBJFile(const QString & filepath, float scale) {
 	QFile f(filepath);
 	if (!f.exists()) {
 		qDebug() << "[Loader OBJ] Error: can`t open \"" + filepath + "\"";
-		return 0;
+		return nullptr;
 	}
 	f.open(QIODevice::ReadOnly);
 	QTextStream stream(&f);
 	QVector<Vector3d> vertices, normals, texcoords;
 	QVector<Material> materials;
-	GLObjectBase * root = new GLObjectBase(), * co = 0;
+	GLObjectBase * root = new GLObjectBase(), * co = nullptr;
 	QString name;
 	root->setName(QFileInfo(f).baseName());
 	int cnt = 0;
@@ -237,7 +237,7 @@ GLObjectBase * loadFromOBJFile(const QString & filepath, double scale) {
 		}
 		if (line.startsWith("g ")) {
 			name = line.mid(1).trimmed();
-			if (co != 0) {
+			if (co != nullptr) {
 				LoaderOBJ::initOBJMesh(co, vertices, normals, texcoords);
 				root->addChild(co);
 			}
@@ -261,7 +261,7 @@ GLObjectBase * loadFromOBJFile(const QString & filepath, double scale) {
 			continue;
 		}
 	}
-	if (co != 0) {
+	if (co != nullptr) {
 		LoaderOBJ::initOBJMesh(co, vertices, normals, texcoords);
 		root->addChild(co);
 	}
diff --git a/qglview/loader_obj.h b/qglview/loader_obj.h
index 2e5cc7e..c73362b 100644
--- a/qglview/loader_obj.h
+++ b/qglview/loader_obj.h
@@ -37,6 +37,6 @@ namespace LoaderOBJ {
 	Material materialByName(const QVector<Material> & materials, const QString & name);
 }
 
-GLObjectBase * loadFromOBJFile(const QString & filepath, double scale = 1.0);
+GLObjectBase * loadFromOBJFile(const QString & filepath, float scale = 1.0);
 
 #endif // LOADER_3DS_H
diff --git a/qglview/openglwindow.cpp b/qglview/openglwindow.cpp
index 6b033d4..8e578b0 100644
--- a/qglview/openglwindow.cpp
+++ b/qglview/openglwindow.cpp
@@ -7,12 +7,26 @@
 
 OpenGLWindow::OpenGLWindow(QWindow *parent)
 	: QWindow(parent)
-	, m_animating(false)
 	, m_context(nullptr)
 	, m_device(nullptr)
 {
 	setFlag(Qt::FramelessWindowHint);
 	setSurfaceType(QWindow::OpenGLSurface);
+	QSurfaceFormat format = QSurfaceFormat::defaultFormat();
+//	qDebug() << format;
+#ifdef QT_OPENGL_ES_2
+	format.setRenderableType(QSurfaceFormat::OpenGLES);
+#else
+	if (QOpenGLContext::openGLModuleType() == QOpenGLContext::LibGL) {
+		format.setVersion(2, 0);
+		format.setProfile(QSurfaceFormat::NoProfile);
+	}
+#endif
+	format.setDepthBufferSize(24);
+//	format.setSamples(4);
+//	format.setStencilBufferSize(8);
+	setFormat(format);
+	QSurfaceFormat::setDefaultFormat(format);
 }
 
 
@@ -77,13 +91,5 @@ void OpenGLWindow::renderNow() {
 	}
 	render();
 	m_context->swapBuffers(this);
-	if (m_animating)
-		renderLater();
-}
-
-
-void OpenGLWindow::setAnimating(bool animating) {
-	m_animating = animating;
-	if (animating) renderLater();
 }
 
diff --git a/qglview/openglwindow.h b/qglview/openglwindow.h
index d9338bd..6816665 100644
--- a/qglview/openglwindow.h
+++ b/qglview/openglwindow.h
@@ -18,8 +18,6 @@ public:
 
 	virtual void initialize();
 
-	void setAnimating(bool animating);
-
 	QOpenGLContext * context() {return m_context;}
 
 public slots:
@@ -32,7 +30,6 @@ protected:
 	void exposeEvent(QExposeEvent *event) override;
 
 private:
-	bool m_animating;
 	QOpenGLContext *m_context;
 	QOpenGLPaintDevice *m_device;
 };
diff --git a/qglview/qglview.cpp b/qglview/qglview.cpp
index b079017..1d39f7e 100644
--- a/qglview/qglview.cpp
+++ b/qglview/qglview.cpp
@@ -53,11 +53,10 @@ QGLView::QGLView(): OpenGLWindow(), fbo_selection(3) {
 	fogDensity_ = fogEnd_ = 1.;
 	fogStart_ = 0.;
 	fogMode_ = Exp;
-	hoverHaloFill_ = 0.333;
-	selectionHaloFill_ = 0.5;
+	hoverHaloFill_ = 0.333f;
+	selectionHaloFill_ = 0.5f;
 	//lmode = Simple;
 	shader_select = shader_halo = nullptr;
-	m_texture_manager = new GLTextureManager();
 	setFeature(qglMSAA, false);
 	setFeature(qglFXAA, false);
 	setFeature(qglLinearFiltering, true);
@@ -91,11 +90,11 @@ QGLView::QGLView(): OpenGLWindow(), fbo_selection(3) {
 	sel_mode = QGLView::SingleSelection;
 //	sel_pen = QPen(Qt::black, 1, Qt::DashLine);
 //	sel_brush = QBrush(QColor(170, 100, 255, 120));
-	camera().setAim(QVector3D(0,0,5.5));
-	camera().setPos(QVector3D(10, 5, 5.5));
-	camera().setName("Camera");
+	camera()->setAim(QVector3D(0,0,5.5));
+	camera()->setPos(QVector3D(10, 5, 5.5));
+	camera()->setName("Camera");
 	addObject(camera());
-	emit cameraPosChanged(camera().pos());
+	emit cameraPosChanged(camera()->pos());
 	//camera().aim_ = camera().pos_;
 	ktm_.restart();
 }
@@ -105,7 +104,6 @@ QGLView::~QGLView() {
 	stop();
 	if (shader_select) delete shader_select;
 	if (shader_halo) delete shader_halo;
-	delete	m_texture_manager;
 }
 
 
@@ -114,8 +112,8 @@ void QGLView::stop() {
 }
 
 
-void QGLView::start(double freq) {
-	timer = startTimer(freq <= 0. ? 0 : 1000. / freq);
+void QGLView::start(float freq) {
+	timer = startTimer(freq <= 0.f ? 0 : int(1000.f / freq));
 }
 
 
@@ -144,6 +142,14 @@ void QGLView::addObject(GLObjectBase * o) {
 }
 
 
+int QGLView::objectsCount(bool all) {
+	if (!all) return objects_.childCount();
+	int cnt = 0;
+	objectsCountInternal(&cnt, &objects_);
+	return cnt;
+}
+
+
 void QGLView::removeObject(GLObjectBase * o, bool inChildren) {
 	o->setView(nullptr);
 	if (inChildren)
@@ -154,6 +160,11 @@ void QGLView::removeObject(GLObjectBase * o, bool inChildren) {
 }
 
 
+void QGLView::removeObject(GLObjectBase & o, bool inChildren) {
+	removeObject(&o, inChildren);
+}
+
+
 void QGLView::clearObjects(bool deleteAll) {
 	removeObject(camera_);
 	objects_.clearChildren(deleteAll);
@@ -163,6 +174,58 @@ void QGLView::clearObjects(bool deleteAll) {
 }
 
 
+QList<GLObjectBase *> QGLView::objects(bool all) {
+	return objects_.children(all);
+}
+
+
+int QGLView::lightsCount() const {
+	return lights_.size();
+}
+
+
+void QGLView::removeLight(int index) {
+	removeObject(lights_.at(index));
+	lights_.removeAt(index);
+}
+
+
+void QGLView::removeLight(Light * l) {
+	foreach (Light * i, lights_)
+		if (i == l) removeObject(i);
+	lights_.removeAll(l);
+}
+
+
+void QGLView::clearLights(bool deleteAll) {
+	if (deleteAll)
+		foreach (Light * i, lights_) delete i;
+	lights_.clear();
+}
+
+
+void QGLView::addTexture(const QString & path) {
+	textures_manager->addTexture(path);
+}
+
+
+void QGLView::addAnimation(const QString & dir, const QString & name) {
+	textures_manager->addAnimation(dir, name);
+}
+
+
+Light * QGLView::light(int index) {
+	return lights_[index];
+}
+
+
+Light * QGLView::light(const QString & name) {
+	foreach (Light * i, lights_)
+		if (i->name_ == name) return i;
+	return nullptr;
+}
+
+
 void QGLView::selectObject(GLObjectBase * o) {
 	if (o == sel_obj) return;
 	GLObjectBase * pso = sel_obj;
@@ -172,7 +235,8 @@ void QGLView::selectObject(GLObjectBase * o) {
 
 
 void QGLView::resizeEvent(QResizeEvent * e) {
-	resizeGL(width(), height());
+//	if (isExposed())
+//		resizeGL(width(), height());
 	/* QWindow::resizeEvent(e);*/
 }
 
@@ -186,15 +250,16 @@ void QGLView::timerEvent(QTimerEvent *) {
 
 
 void QGLView::render() {
+	resizeGL(width(), height());
 	QRect g_rect(QPoint(), size());
 	emit glBeforePaint();
 	//qDebug() << "paintGL";
 	//QMutexLocker ml_v(&v_mutex);
 	glEnable(GL_CULL_FACE);
 	//glDisable(GL_CULL_FACE);
-	camera().apply(aspect);
+	camera()->apply(aspect);
 	//objects_.preparePos(camera());
-	start_rp.cam_offset_matrix = camera().offsetMatrix();
+	start_rp.cam_offset_matrix = camera()->offsetMatrix();
 	start_rp.proj_matrix = getGLMatrix(GL_PROJECTION_MATRIX);
 	start_rp.view_matrix = getGLMatrix(GL_MODELVIEW_MATRIX);
 	//objects_.buildTransform();
@@ -232,7 +297,7 @@ void QGLView::render() {
 			}
 		} else {
 			glReadPixels(lastPos.x(), height() - lastPos.y(), 1, 1, GL_RGBA, GL_UNSIGNED_BYTE, cgid);
-			iid = (cgid[0] << 24) | (cgid[1] << 16) | (cgid[2] << 8) | cgid[3];
+			iid = uint(cgid[0] << 24) | uint(cgid[1] << 16) | uint(cgid[2] << 8) | cgid[3];
 			so = ids.value(iid, nullptr);
 			//qDebug() <<cgid[0]<<cgid[1]<<cgid[2]<<cgid[3]<< iid;
 			if (so != hov_obj) {
@@ -256,8 +321,8 @@ void QGLView::render() {
 		glEnableClientState(GL_COLOR_ARRAY);*/
 	}
 
-	camera().apply(aspect);
-	start_rp.cam_offset_matrix = camera().offsetMatrix();
+	camera()->apply(aspect);
+	start_rp.cam_offset_matrix = camera()->offsetMatrix();
 	cur_mvpm = start_rp.proj_matrix * start_rp.view_matrix * start_rp.cam_offset_matrix;
 	//objects_.preparePos(camera());
 
@@ -280,9 +345,9 @@ void QGLView::render() {
 	emit glPainting();
 	if (selectionHalo_ || hoverHalo_) {
 		glReleaseTextures();
-		glReleaseShaders();
-		glReleaseFramebuffer();
-		glActiveTextureChannel(0);
+		glUseProgram(0);
+		glBindFramebuffer(GL_FRAMEBUFFER, 0);
+		glActiveTexture(GL_TEXTURE0);
 		glEnable(GL_TEXTURE_2D);
 		glEnable(GL_BLEND);
 		glDisable(GL_TEXTURE_CUBE_MAP);
@@ -301,9 +366,9 @@ void QGLView::render() {
 		}
 	}
 
-	glReleaseShaders();
+	glUseProgram(0);
 	glResetAllTransforms();
-	glReleaseFramebuffer();
+	glBindFramebuffer(GL_FRAMEBUFFER, 0);
 
 	emit glEndPaint();
 
@@ -350,13 +415,13 @@ void QGLView::render() {
 
 
 void QGLView::initialize() {
-	initializeOpenGLFunctions();
+	//initializeOpenGLFunctions();
 	glEnable(GL_TEXTURE_MAX_ANISOTROPY_EXT);
 	glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
 	glEnableDepth();
 	glEnable(GL_CULL_FACE);
 	glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, 1);
-	glActiveTextureChannel(3);
+	glActiveTexture(GL_TEXTURE0 + 3);
 	glEnable(GL_TEXTURE_GEN_S);
 	glEnable(GL_TEXTURE_GEN_T);
 	glEnable(GL_TEXTURE_GEN_R);
@@ -366,13 +431,13 @@ void QGLView::initialize() {
 	glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
 	glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 	glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
-	glActiveTextureChannel(0);
+	glActiveTexture(GL_TEXTURE0);
 	glShadeModel(GL_SMOOTH);
 	glCullFace(GL_BACK);
 	glEnable(GL_COLOR_MATERIAL);
 	glColorMaterial(GL_FRONT, GL_DIFFUSE);
 
-	textures_manager.loadTextures();
+	textures_manager->loadTextures();
 	objects_.initInternal();
 	checkCaps();
 
@@ -380,23 +445,23 @@ void QGLView::initialize() {
 	shader_halo = new QOpenGLShaderProgram(context());
 	reloadThisShaders();
 	is_init = true;
-	resizeGL(width(), height());
+	//resizeGL(width(), height());
 	need_init_ = false;
 	emit glInitializeDone();
 }
 
 
-void QGLView::renderHalo(const GLObjectBase * obj, const uint iid, const QColor & color, const double & fill) {
+void QGLView::renderHalo(const GLObjectBase * obj, const uint iid, const QColor & color, const float & fill) {
 	if (!shaders_supported) return;
 	if (!shader_halo) return;
 	if (!shader_halo->isLinked()) return;
 	if (obj) {
 		shader_halo->bind();
 		shader_halo->setUniformValue("qgl_ModelViewProjectionMatrix", QMatrix4x4());
-		glActiveTextureChannel(0);
+		glActiveTexture(GL_TEXTURE0);
 		glBindTexture(GL_TEXTURE_2D, fbo_selection.colorTexture());
 		shader_halo->setUniformValue("t0", 0);
-		shader_halo->setUniformValue("dt", QVector2D(1. / width(), 1. / height()));
+		shader_halo->setUniformValue("dt", QVector2D(1.f / width(), 1.f / height()));
 		shader_halo->setUniformValue("selected", QVector4D(float((iid >> 24) & 0xFF) / 255.f,
 															float((iid >> 16) & 0xFF) / 255.f,
 															float((iid >> 8) & 0xFF) / 255.f,
@@ -493,6 +558,13 @@ void QGLView::collectObjectLights(GLObjectBase * o) {
 }
 
 
+void QGLView::objectsCountInternal(int * cnt, GLObjectBase * where) {
+	++(*cnt);
+	foreach (GLObjectBase * i, where->children_)
+		objectsCountInternal(cnt, i);
+}
+
+
 void QGLView::removeObjectInternal(GLObjectBase * o, GLObjectBase * where) {
 	foreach (GLObjectBase * i, where->children_) {
 		if (o == i)
@@ -520,6 +592,14 @@ void QGLView::reloadThisShaders() {
 	//loadShaders(shader_rope, "rope", "shaders");
 }
 
+void QGLView::glReleaseTextures(int channels) {
+	for (int i = channels - 1; i >= 0; --i) {
+		glActiveTexture(GL_TEXTURE0 + i);
+		glBindTexture(GL_TEXTURE_2D, 0);
+		glBindTexture(GL_TEXTURE_CUBE_MAP, 0);
+	}
+}
+
 
 void QGLView::applyFog() {
 	GLfloat fog_col[4] = {float(fogColor_.redF()), float(fogColor_.greenF()), float(fogColor_.blueF()), .0f};
@@ -540,12 +620,12 @@ void QGLView::applyFog() {
 void QGLView::resizeGL(int width, int height) {
 	if (!is_init) return;
 	if (width <= 0 || height <= 0) return;
-	aspect = double(width) / double(height);
+	aspect = float(width) / float(height);
 	if (renderer_) renderer_->resize(width, height);
 	//qDebug() << "resize" << width << height;
 	fbo_selection.resize(width, height);
 	mouse_first = true;
-	iaspect = (aspect == 0.) ? 0. : 1 / aspect;
+	iaspect = (aspect == 0.f) ? 0. : 1 / aspect;
 	glViewport(0, 0, width, height);
 	emit glResize(width, height);
 }
@@ -592,26 +672,26 @@ void QGLView::mouseMoveEvent(QMouseEvent * e) {
 	///qDebug() << e->x() << e->y();
 	QRect g_rect(QPoint(), size());
 	if (mouseRotate_) {
-		double dx = e->x() - lastPos.x();
-		double dy = e->y() - lastPos.y();
+		float dx = e->x() - lastPos.x();
+		float dy = e->y() - lastPos.y();
 		if (e->buttons() & Qt::LeftButton) {
 			//camera().angle_z += dx / 4.;
 			//camera().angle_xy += dy / 4.;
 			if (cameraOrbit_) {
-				camera().orbitZ(dx / 4.);
-				camera().orbitXY(dy / 4.);
+				camera()->orbitZ(dx / 4.f);
+				camera()->orbitXY(dy / 4.f);
 			} else {
-				camera().rotateZ(dx / 4.);
-				camera().rotateXY(dy / 4.);
+				camera()->rotateZ(dx / 4.f);
+				camera()->rotateXY(dy / 4.f);
 			}
-			emit cameraPosChanged(camera().pos());
+			emit cameraPosChanged(camera()->pos());
 		} else if (e->buttons() & Qt::RightButton) {
-			double ad = camera().distance();
-			camera().moveLeft(dx / 1000. * ad);
-			camera().moveUp(dy / 1000. * ad);
+			float ad = camera()->distance();
+			camera()->moveLeft(dx / 1000.f * ad);
+			camera()->moveUp(dy / 1000.f * ad);
 			//camera().pos.setX(camera().pos.x() + camera().pos.z() * dx / 500.);
 			//camera().pos.setY(camera().pos.y() - camera().pos.z() * dy / 500.);
-			emit cameraPosChanged(camera().pos());
+			emit cameraPosChanged(camera()->pos());
 		}
 		//lights[0]->pos_ = camera().pos();
 	}
@@ -643,9 +723,9 @@ void QGLView::mouseMoveEvent(QMouseEvent * e) {
 
 void QGLView::wheelEvent(QWheelEvent * e) {
 	if (mouseRotate_) {
-		if (e->delta() > 0) camera().flyCloser(0.1); //camera().pos.setZ(camera().pos.z() - 0.1 * camera().pos.z());
-		if (e->delta() < 0) camera().flyFarer(0.1); //camera().pos.setZ(camera().pos.z() + 0.1 * camera().pos.z());
-		emit cameraPosChanged(camera().pos());
+		if (e->delta() > 0) camera()->flyCloser(0.1f); //camera().pos.setZ(camera().pos.z() - 0.1 * camera().pos.z());
+		if (e->delta() < 0) camera()->flyFarer(0.1f); //camera().pos.setZ(camera().pos.z() + 0.1 * camera().pos.z());
+		emit cameraPosChanged(camera()->pos());
 	}
 	emit glWheelEvent(e);
 }
@@ -660,6 +740,9 @@ void QGLView::leaveEvent(QEvent * ) {
 void QGLView::keyPressEvent(QKeyEvent * e) {
 	emit glKeyPressEvent(e);
 	if (e->key() > 0) keys_.insert(e->key());
+	if (e->key() == Qt::Key_F11) {
+		emit doubleClick();
+	}
 }
 
 
@@ -669,7 +752,12 @@ void QGLView::keyReleaseEvent(QKeyEvent * e) {
 }
 
 
-void QGLView::focusOutEvent(QFocusEvent *)
-{keys_.clear();
+void QGLView::focusOutEvent(QFocusEvent *) {
+	keys_.clear();
 }
 
+
+void QGLView::mouseDoubleClickEvent(QMouseEvent * e) {
+	if (e->buttons().testFlag(Qt::MidButton))
+		emit doubleClick();
+}
diff --git a/qglview/qglview.h b/qglview/qglview.h
index 6ecbef8..208b8db 100644
--- a/qglview/qglview.h
+++ b/qglview/qglview.h
@@ -33,15 +33,15 @@ class QGLView: public OpenGLWindow, public QGLViewBase
 	friend class GLObjectBase;
 	Q_OBJECT
 	Q_PROPERTY (QColor backColor READ backColor WRITE setBackColor)
-	Q_PROPERTY (double lineWidth READ lineWidth WRITE setLineWidth)
-	Q_PROPERTY (double FOV READ FOV WRITE setFOV)
-	Q_PROPERTY (double depthStart READ depthStart WRITE setDepthStart)
-	Q_PROPERTY (double depthEnd READ depthEnd WRITE setDepthEnd)
+	Q_PROPERTY (float lineWidth READ lineWidth WRITE setLineWidth)
+	Q_PROPERTY (float FOV READ FOV WRITE setFOV)
+	Q_PROPERTY (float depthStart READ depthStart WRITE setDepthStart)
+	Q_PROPERTY (float depthEnd READ depthEnd WRITE setDepthEnd)
 	Q_PROPERTY (QColor ambientColor READ ambientColor WRITE setAmbientColor)
 	Q_PROPERTY (QColor fogColor READ fogColor WRITE setFogColor)
-	Q_PROPERTY (double fogDensity READ fogDensity WRITE setFogDensity)
-	Q_PROPERTY (double fogStart READ fogStart WRITE setFogStart)
-	Q_PROPERTY (double fogEnd READ fogEnd WRITE setFogEnd)
+	Q_PROPERTY (float fogDensity READ fogDensity WRITE setFogDensity)
+	Q_PROPERTY (float fogStart READ fogStart WRITE setFogStart)
+	Q_PROPERTY (float fogEnd READ fogEnd WRITE setFogEnd)
 	Q_PROPERTY (FogMode fogMode READ fogMode WRITE setFogMode)
 	Q_PROPERTY (bool fogEnabled READ isFogEnabled WRITE setFogEnabled)
 	Q_PROPERTY (int renderMode READ renderMode WRITE setRenderMode)
@@ -51,10 +51,10 @@ class QGLView: public OpenGLWindow, public QGLViewBase
 	Q_PROPERTY (bool cameraOrbit READ isCameraOrbit WRITE setCameraOrbit)
 	Q_PROPERTY (bool hoverHalo READ isHoverHaloEnabled WRITE setHoverHaloEnabled)
 	Q_PROPERTY (QColor hoverHaloColor READ hoverHaloColor WRITE setHoverHaloColor)
-	Q_PROPERTY (double hoverHaloFillAlpha READ hoverHaloFillAlpha WRITE setHoverHaloFillAlpha)
+	Q_PROPERTY (float hoverHaloFillAlpha READ hoverHaloFillAlpha WRITE setHoverHaloFillAlpha)
 	Q_PROPERTY (bool selectionHalo READ isSelectionHaloEnabled WRITE setSelectionHaloEnabled)
 	Q_PROPERTY (QColor selectionHaloColor READ selectionHaloColor WRITE setSelectionHaloColor)
-	Q_PROPERTY (double selectionHaloFillAlpha READ selectionHaloFillAlpha WRITE setSelectionHaloFillAlpha)
+	Q_PROPERTY (float selectionHaloFillAlpha READ selectionHaloFillAlpha WRITE setSelectionHaloFillAlpha)
 	Q_PROPERTY (Qt::MouseButton selectionButton READ selectionButton WRITE setSelectionButton)
 	Q_PROPERTY (Qt::KeyboardModifier selectionModifier READ selectionModifier WRITE setSelectionModifier)
 	Q_PROPERTY (SelectionMode selectionMode READ selectionMode WRITE setSelectionMode)
@@ -99,24 +99,24 @@ public:
 	Q_ENUMS (SelectionMode)
 
 	void stop();
-	void start(double freq = 40.);
+	void start(float freq = 40.);
 
 	GLRendererBase * renderer();
 	void setRenderer(GLRendererBase * r, GLRendererBase ** prev = nullptr);
 
 	QColor backColor() const {return backColor_;}
-	double lineWidth() const {return lineWidth_;}
-	double FOV() const {return camera().fov_;}
-	double depthStart() const {return camera().depth_start;}
-	double depthEnd() const {return camera().depth_end;}
-	double currentFPS() const {return fps_;}
+	float lineWidth() const {return lineWidth_;}
+	float FOV() const {return camera()->fov_;}
+	float depthStart() const {return camera()->depth_start;}
+	float depthEnd() const {return camera()->depth_end;}
+	float currentFPS() const {return fps_;}
 	int maxAnisotropicLevel() const {return max_anisotropic;}
 
 	QColor ambientColor() const {return ambientColor_;}
 	QColor fogColor() const {return fogColor_;}
-	double fogDensity() const {return fogDensity_;}
-	double fogStart() const {return fogStart_;}
-	double fogEnd() const {return fogEnd_;}
+	float  fogDensity() const {return fogDensity_;}
+	float fogStart() const {return fogStart_;}
+	float fogEnd() const {return fogEnd_;}
 	FogMode fogMode() const {return fogMode_;}
 	bool isFogEnabled() const {return fogEnabled_;}
 	bool isLightEnabled() const {return lightEnabled_;}
@@ -126,10 +126,10 @@ public:
 	bool isCameraOrbit() const {return cameraOrbit_;}
 	bool isHoverHaloEnabled() const {return hoverHalo_;}
 	QColor hoverHaloColor() const {return hoverHaloColor_;}
-	double hoverHaloFillAlpha() const {return hoverHaloFill_;}
+	float hoverHaloFillAlpha() const {return hoverHaloFill_;}
 	bool isSelectionHaloEnabled() const {return selectionHalo_;}
 	QColor selectionHaloColor() const {return selectionHaloColor_;}
-	double selectionHaloFillAlpha() const {return selectionHaloFill_;}
+	float selectionHaloFillAlpha() const {return selectionHaloFill_;}
 
 	QVariant feature(Feature f) const {return features_.value(int(f));}
 	QVariant setFeature(Feature f, const QVariant & value) {QVariant ret = features_.value(int(f)); features_[int(f)] = value; return ret;}
@@ -138,30 +138,28 @@ public:
 	int renderMode() const {return (int)rmode;}
 	void setRenderMode(int mode) {rmode = (GLObjectBase::RenderMode)mode;}
 
-	void addObject(QWidget * o, Qt::WindowFlags f = Qt::Widget);
 	void addObject(GLObjectBase * o);
-	void addObject(GLObjectBase & o) {addObject(&o);}
-	int objectsCount(bool all = false) {if (!all) return objects_.childCount(); int cnt = 0; objectsCountInternal(&cnt, &objects_); return cnt;}
+//	void addObject(GLObjectBase & o) {addObject(&o);}
+	int objectsCount(bool all = false);
 	void removeObject(GLObjectBase * o, bool inChildren = true);
-	void removeObject(GLObjectBase & o, bool inChildren = true) {removeObject(&o, inChildren);}
+	void removeObject(GLObjectBase & o, bool inChildren = true);
 	void clearObjects(bool deleteAll = false);
-	QList<GLObjectBase * > objects(bool all = false) {return objects_.children(all);}
+	QList<GLObjectBase * > objects(bool all = false);
 
-	int lightsCount() const {return lights_.size();}
-	void removeLight(int index) {removeObject(lights_.at(index)); lights_.removeAt(index);}
-	void removeLight(Light * l) {foreach (Light * i, lights_) removeObject(i); lights_.removeAll(l);}
-	void clearLights(bool deleteAll = false) {if (deleteAll) foreach (Light * i, lights_) delete i; lights_.clear();}
+	int lightsCount() const;
+	void removeLight(int index);
+	void removeLight(Light * l);
+	void clearLights(bool deleteAll = false);
 	QList<Light * > lights() {return lights_;}
 
-	GLTextureManager * textureManager() {return &textures_manager;}
-	void addTexture(const QString & path) {textures_manager.addTexture(path);}
-	void addAnimation(const QString & dir, const QString & name) {textures_manager.addAnimation(dir, name);}
+	void addTexture(const QString & path);
+	void addAnimation(const QString & dir, const QString & name);
 
 	const GLObjectBase & rootObject() {return objects_;}
 	GLObjectBase * object(int index) {return objects_.child(index);}
 	GLObjectBase * object(const QString & name) {return objects_.child(name);}
-	Light * light(int index) {return lights_[index];}
-	Light * light(const QString & name) {foreach (Light * i, lights_) if (i->name_ == name) return i; return 0;}
+	Light * light(int index);
+	Light * light(const QString & name);
 
 	SelectionMode selectionMode() const {return sel_mode;}
 	Qt::MouseButton selectionButton() const {return sel_button;}
@@ -173,7 +171,9 @@ public:
 	void selectObject(GLObjectBase * o);
 	GLObjectBase * selectedObject() const {return sel_obj;}
 
-	GLdouble aspect, iaspect;
+	void glReleaseTextures(int channels = 8);
+
+	GLfloat aspect, iaspect;
 	QMatrix4x4 cur_mvpm;
 
 protected:
@@ -188,6 +188,7 @@ protected:
 	void mouseReleaseEvent(QMouseEvent * e);
 	void wheelEvent(QWheelEvent * e);
 	void leaveEvent(QEvent * );
+	void mouseDoubleClickEvent(QMouseEvent * e);
 
 	void keyPressEvent(QKeyEvent * e);
 	void keyReleaseEvent(QKeyEvent * e);
@@ -202,17 +203,16 @@ protected:
 private:
 	void objectDeleted(GLObjectBase * o);
 	void collectObjectLights(GLObjectBase * o);
-	void objectsCountInternal(int * cnt, GLObjectBase * where) {++(*cnt); foreach (GLObjectBase * i, where->children_) objectsCountInternal(cnt, i);}
+	void objectsCountInternal(int * cnt, GLObjectBase * where);
 	void removeObjectInternal(GLObjectBase * o, GLObjectBase * where);
 	void renderSingleSelection(GLObjectBase & o);
 	//void renderSingleShadow(GLObjectBase & o);
-	void renderHalo(const GLObjectBase * obj, const uint iid, const QColor & color, const double & fill);
+	void renderHalo(const GLObjectBase * obj, const uint iid, const QColor & color, const float & fill);
 	void reloadThisShaders();
 	void processKeys();
 	bool setupViewport();
 
 	QPoint lastPos, downPos;
-	GLTextureManager textures_manager;
 	GLObjectBase objects_;
 	QList<Light * > lights_;
 //	uint cid;
@@ -232,8 +232,8 @@ private:
 	Qt::KeyboardModifier sel_mod;
 	GLRendererBase::RenderingParameters start_rp;
 	QHash<int, QVariant> features_;
-	double lineWidth_;
-	double fogDensity_, fogStart_, fogEnd_, fps_, fps_tm, hoverHaloFill_, selectionHaloFill_, m_motionBlurFactor;
+	float lineWidth_;
+	float fogDensity_, fogStart_, fogEnd_, fps_, fps_tm, hoverHaloFill_, selectionHaloFill_, m_motionBlurFactor;
 	int timer, fps_cnt, sh_id_loc;
 	bool is_first_draw, is_init, fogEnabled_, lightEnabled_, grabMouse_, mouse_first, mouseRotate_, mouseSelect_, customMouseMove_;
 	bool shaders_supported, changed_, cameraOrbit_, need_init_;
@@ -241,15 +241,15 @@ private:
 
 public slots:
 	void setBackColor(const QColor & arg) {backColor_ = arg;}
-	void setLineWidth(const double & arg) {lineWidth_ = arg;}
-	void setFOV(const double & arg) {camera().fov_ = arg;}
-	void setDepthStart(const double & arg) {camera().depth_start = arg;}
-	void setDepthEnd(const double & arg) {camera().depth_end = arg;}
+	void setLineWidth(const float & arg) {lineWidth_ = arg;}
+	void setFOV(const float & arg) {camera()->fov_ = arg;}
+	void setDepthStart(const float & arg) {camera()->depth_start = arg;}
+	void setDepthEnd(const float & arg) {camera()->depth_end = arg;}
 	void setAmbientColor(const QColor & arg) {ambientColor_ = arg;}
 	void setFogColor(const QColor & arg) {fogColor_ = arg;}
-	void setFogDensity(const double & arg) {fogDensity_ = arg;}
-	void setFogStart(const double & arg) {fogStart_ = arg;}
-	void setFogEnd(const double & arg) {fogEnd_ = arg;}
+	void setFogDensity(const float & arg) {fogDensity_ = arg;}
+	void setFogStart(const float & arg) {fogStart_ = arg;}
+	void setFogEnd(const float & arg) {fogEnd_ = arg;}
 	void setFogMode(const FogMode & arg) {fogMode_ = arg;}
 	void setFogEnabled(const bool & arg) {fogEnabled_ = arg;}
 	void setLightEnabled(const bool & arg) {lightEnabled_ = arg;}
@@ -260,13 +260,13 @@ public slots:
 	void setCameraOrbit(const bool & arg) {cameraOrbit_ = arg;}
 	void setHoverHaloEnabled(const bool & arg) {hoverHalo_ = arg;}
 	void setHoverHaloColor(const QColor & arg) {hoverHaloColor_ = arg;}
-	void setHoverHaloFillAlpha(const double & arg) {hoverHaloFill_ = arg;}
+	void setHoverHaloFillAlpha(const float & arg) {hoverHaloFill_ = arg;}
 	void setSelectionHaloEnabled(const bool & arg) {selectionHalo_ = arg;}
 	void setSelectionHaloColor(const QColor & arg) {selectionHaloColor_ = arg;}
-	void setSelectionHaloFillAlpha(const double & arg) {selectionHaloFill_ = arg;}
+	void setSelectionHaloFillAlpha(const float & arg) {selectionHaloFill_ = arg;}
 
-	void reloadShaders() {if (renderer_ != 0) renderer_->reloadShaders(); reloadThisShaders();}
-	void deselect() {sel_obj = 0;}
+	void reloadShaders() {if (renderer_ != nullptr) renderer_->reloadShaders(); reloadThisShaders();}
+	void deselect() {sel_obj = nullptr;}
 
 signals:
 	void glBeforePaint();
@@ -288,6 +288,7 @@ signals:
 	void hoverChanged(GLObjectBase * cur, GLObjectBase * prev);
 	void selectionChanged(GLObjectBase * cur, GLObjectBase * prev);
 	void objectAdded(GLObjectBase * );
+	void doubleClick();
 
 };
 
diff --git a/qglview/qglview_test/qglview_window.cpp b/qglview/qglview_test/qglview_window.cpp
index ed09a8e..3dc4877 100644
--- a/qglview/qglview_test/qglview_window.cpp
+++ b/qglview/qglview_test/qglview_window.cpp
@@ -35,9 +35,9 @@ QGLViewWindow::QGLViewWindow(QWidget * parent): QMainWindow(parent), Ui::QGLView
 	icon_camera = QIcon(":/icons/type-camera.png");
 	icon_light = QIcon(":/icons/type-light.png");
 	
-	sel_obj = 0;
-	view->view()->camera().setAim(QVector3D());
-	view->view()->camera().setPos(QVector3D(2, 2, 2));
+	sel_obj = nullptr;
+	view->view()->camera()->setAim(QVector3D());
+	view->view()->camera()->setPos(QVector3D(2, 2, 2));
 //	view->setFrameShape(QFrame::NoFrame);
 	view->view()->setRenderer(new RendererSimple(view->view()));
 	view->view()->setMouseRotateEnabled(true);
@@ -105,7 +105,7 @@ QGLViewWindow::QGLViewWindow(QWidget * parent): QMainWindow(parent), Ui::QGLView
 	cam_light = new Light();
 	cam_light->intensity = 0.5;
 	cam_light->setName("Camera_Light");
-	view->view()->camera().addChild(cam_light);
+	view->view()->camera()->addChild(cam_light);
 	view->view()->start(-1);
 	startTimer(1000/60);
 
@@ -153,7 +153,7 @@ void QGLViewWindow::loadFile(const QString & path) {
 void QGLViewWindow::importFile(const QString & path) {
 	QApplication::setOverrideCursor(Qt::WaitCursor);
 	QFileInfo fi(path);
-	GLObjectBase * o = 0;
+	GLObjectBase * o = nullptr;
 	if (fi.suffix().toLower() == "qgl") o = loadFromQGLFile(path);
 	if (fi.suffix().toLower() == "ase") o = loadFromASEFile(path);
 	if (fi.suffix().toLower() == "3ds") o = loadFrom3DSFile(path);
@@ -188,10 +188,10 @@ void QGLViewWindow::makeObjetTree(const GLObjectBase * o, QTreeWidgetItem * ti)
 }
 
 
-void QGLViewWindow::selectionChanged(GLObjectBase * cur, GLObjectBase * prev) {
+void QGLViewWindow::selectionChanged(GLObjectBase * cur, GLObjectBase *) {
 	sel_obj = cur;
 	//qDebug() << "selected" << (cur != 0 ? cur->name() : "0");
-	labelName->setText(cur != 0 ? cur->name() : "");
+	labelName->setText(cur != nullptr ? cur->name() : "");
 	/**if (cur == 0) box->hide();
 	else {
 		box->setScale(cur->boundingBox().size());
@@ -203,26 +203,26 @@ void QGLViewWindow::selectionChanged(GLObjectBase * cur, GLObjectBase * prev) {
 		box->show();
 	}*/
 	objectEditor->setObject(sel_obj);
-	if (sel_obj == 0) return;
+	if (sel_obj == nullptr) return;
 	matEditor->setMaterial(sel_obj->material());
 	//qDebug() << sel_obj->boundingBox();
 }
 
 
 void QGLViewWindow::materialChanged() {
-	if (sel_obj == 0) return;
+	if (sel_obj == nullptr) return;
 	sel_obj->setMaterial(matEditor->material());
 }
 
 
 void QGLViewWindow::on_comboRenderer_currentIndexChanged(int val) {
-	GLRendererBase * pr = 0;
+	GLRendererBase * pr = nullptr;
 	switch (val) {
 	case 0: view->view()->setRenderer(new RendererSimple(view->view()), &pr); break;
 	case 1: view->view()->setRenderer(new RendererDeferredShading(view->view()), &pr); break;
 	//case 2: view->view()->setRenderer(new RendererRT(view), &pr); break;
 	}
-	if (pr != 0) delete pr;
+	if (pr != nullptr) delete pr;
 }
 
 
@@ -294,20 +294,20 @@ void QGLViewWindow::view_keyEvent(Qt::Key k, Qt::KeyboardModifiers m) {
 	if (m.testFlag(Qt::ShiftModifier))
 		spd = 0.5;
 	switch (k) {
-	case Qt::Key_W: view->view()->camera().moveForward(spd); break;
-	case Qt::Key_S: view->view()->camera().moveBackward(spd); break;
-	case Qt::Key_A: view->view()->camera().moveLeft(spd); break;
-	case Qt::Key_D: view->view()->camera().moveRight(spd); break;
+	case Qt::Key_W: view->view()->camera()->moveForward(spd); break;
+	case Qt::Key_S: view->view()->camera()->moveBackward(spd); break;
+	case Qt::Key_A: view->view()->camera()->moveLeft(spd); break;
+	case Qt::Key_D: view->view()->camera()->moveRight(spd); break;
 	default: break;
 	}
 }
 
 
-void QGLViewWindow::on_treeObjects_itemClicked(QTreeWidgetItem * ti, int col) {
+void QGLViewWindow::on_treeObjects_itemClicked(QTreeWidgetItem * ti, int) {
 	((GLObjectBase*)(ti->data(0, Qt::UserRole).toULongLong()))->select();
 	//qDebug() << ((GLObjectBase*)(ti->data(0, Qt::UserRole).toULongLong()))->type();
 	if (sel_obj->type() == GLObjectBase::glCamera)
-		view->view()->setCamera(*(Camera*)sel_obj);
+		view->view()->setCamera((Camera*)sel_obj);
 }
 
 
@@ -322,8 +322,8 @@ void QGLViewWindow::on_pushButton_clicked() {
 	//view->view()->removeLight(view->view()->lightsCount() - 1);
 	//setWindowTitle(QString::number(view->view()->lightsCount()));
 	QVector3D wp = view->view()->light(0)->worldPos();
-	view->view()->camera().setPos(wp);
-	view->view()->camera().setAim(wp + (view->view()->light(0)->worldTransform() * QVector4D(view->view()->light(0)->direction)).toVector3D()*100);
+	view->view()->camera()->setPos(wp);
+	view->view()->camera()->setAim(wp + (view->view()->light(0)->worldTransform() * QVector4D(view->view()->light(0)->direction)).toVector3D()*100);
 }
 
 
diff --git a/qglview/qglview_test/qglview_window.h b/qglview/qglview_test/qglview_window.h
index 8f63dde..10deb39 100644
--- a/qglview/qglview_test/qglview_window.h
+++ b/qglview/qglview_test/qglview_window.h
@@ -121,11 +121,11 @@ private slots:
 
 	void view_keyEvent(Qt::Key k, Qt::KeyboardModifiers m);
 
-	void on_treeObjects_itemClicked(QTreeWidgetItem * ti, int col);
+	void on_treeObjects_itemClicked(QTreeWidgetItem * ti, int);
 
 	void objectsTreeChanged();
 	void materialChanged();
-	void selectionChanged(GLObjectBase * cur, GLObjectBase * prev);
+	void selectionChanged(GLObjectBase * cur, GLObjectBase *);
 
 	void on_pushButton_clicked();
 	void on_pushButton_2_clicked() {view->view()->reloadShaders();}
diff --git a/qglview/renderer_deferred_shading.cpp b/qglview/renderer_deferred_shading.cpp
index a5b96eb..02d7fb5 100644
--- a/qglview/renderer_deferred_shading.cpp
+++ b/qglview/renderer_deferred_shading.cpp
@@ -39,7 +39,7 @@ fbo_g(5, true, GL_RGBA16F), fbo_out(3, false, GL_RGBA16F), fbo_hsmall(1, false,
 			<< ShaderPair("ssao_merge", &shader_ssao_merge)
 			<< ShaderPair("dof", &shader_dof);
 	for (int i = 0; i < shaders.size(); ++i)
-		*(shaders[i].second) = 0;
+		*(shaders[i].second) = nullptr;
 	lights_per_pass = 8;
 	tnoise = 0;
 	exposure_ = 1.;
@@ -73,12 +73,12 @@ void RendererDeferredShading::renderScene() {
 	QMatrix4x4 mview = rp.view_matrix;
 	QMatrix4x4 mviewi = rp.view_matrix_i;
 	QMatrix4x4 mviewproji = (mproj * mview).inverted();
-	QMatrix4x4 moffset = view.camera().offsetMatrix();
+	QMatrix4x4 moffset = view.camera()->offsetMatrix();
 	QMatrix4x4 moffseti = moffset.inverted();
 	rp.prev_proj_matrix = prev_proj;
 	rp.prev_view_matrix = prev_view;
 	QMatrix4x4 vc_proji;
-	vc_proji.perspective(90., 1., view.camera().depthStart(), view.camera().depthEnd());
+	vc_proji.perspective(90., 1., view.camera()->depthStart(), view.camera()->depthEnd());
 	vc_proji = vc_proji.inverted();
 	corner_dirs[0] = (mproji * QVector4D( 1,  1, 0, 1));
 	corner_dirs[1] = (mproji * QVector4D(-1,  1, 0, 1));
@@ -89,30 +89,30 @@ void RendererDeferredShading::renderScene() {
 	int buffs[] = {0, 1, 2, 3, 4};
 	fbo_g.setWriteBuffers(buffs, 5);
 	if (white_image_id == 0) {
-		glActiveTextureChannel(6);
+		glActiveTexture(GL_TEXTURE0 + 6);
 		white_image_id = view.textureManager()->loadTexture(white_image, false);
 		glBindTexture(GL_TEXTURE_2D, white_image_id);
-		glActiveTextureChannel(0);
+		glActiveTexture(GL_TEXTURE0);
 	}
 	if (violent_image_id == 0) {
-		glActiveTextureChannel(7);
+		glActiveTexture(GL_TEXTURE0 + 7);
 		violent_image_id = view.textureManager()->loadTexture(violent_image, false);
 		glBindTexture(GL_TEXTURE_2D, violent_image_id);
-		glActiveTextureChannel(0);
+		glActiveTexture(GL_TEXTURE0);
 	}
 	glClearFramebuffer(QColor(0, 0, 0, 0));
 	glDisable(GL_RESCALE_NORMAL);
 	glEnableDepth();
 	shader_ds_0->bind();
 	rp.setUniform(shader_ds_0);
-	shader_ds_0->setUniformValue("z_far", GLfloat(view.depthEnd()));
-	shader_ds_0->setUniformValue("z_near", GLfloat(view.depthStart()));
+	shader_ds_0->setUniformValue("z_far", view.depthEnd());
+	shader_ds_0->setUniformValue("z_near", view.depthStart());
 	shader_ds_0->setUniformValue("t0", 0);
 	shader_ds_0->setUniformValue("t1", 1);
 	shader_ds_0->setUniformValue("t2", 2);
 	shader_ds_0->setUniformValue("t3", 3);
 	shader_ds_0->setUniformValue("t4", 4);
-	shader_ds_0->setUniformValue("dt", QVector2D(1. / view.width(), 1. / view.height()));
+	shader_ds_0->setUniformValue("dt", QVector2D(1.f / view.width(), 1.f / view.height()));
 	//qDebug() << rp.view_matrix << prev_view;
 	//shader_ds_0->setUniformValue("qgl_ModelViewMatrix", rp.view_matrix);
 	renderObjects(GLObjectBase::Solid, 0, shader_ds_0, true, false, false);
@@ -156,8 +156,8 @@ void RendererDeferredShading::renderScene() {
 	rp.prepare();
 	//qDebug() << rp.view_matrix;
 	shader_ds_1->bind();
-	shader_ds_1->setUniformValue("z_far", GLfloat(view.depthEnd()));
-	shader_ds_1->setUniformValue("z_near", GLfloat(view.depthStart()));
+	shader_ds_1->setUniformValue("z_far", view.depthEnd());
+	shader_ds_1->setUniformValue("z_near", view.depthStart());
 	shader_ds_1->setUniformValue("t0", 0);
 	shader_ds_1->setUniformValue("t1", 1);
 	shader_ds_1->setUniformValue("t2", 2);
@@ -170,7 +170,7 @@ void RendererDeferredShading::renderScene() {
 	shader_ds_1->setUniformValue("mat_viewi", mviewi);
 	shader_ds_1->setUniformValue("mat_viewproji", mviewproji);
 	shader_ds_1->setUniformValue("shadow_on", view.isFeatureEnabled(QGLView::qglShadowsEnabled) ? 1 : 0);
-	shader_ds_1->setUniformValue("dt", QVector2D(1. / view.width(), 1. / view.height()));
+	shader_ds_1->setUniformValue("dt", QVector2D(1.f / view.width(), 1.f / view.height()));
 	rp.setUniform(shader_ds_1);
 	fbo_g.bindColorTextures();
 	fbo_g.bindDepthTexture(5);
@@ -188,7 +188,7 @@ void RendererDeferredShading::renderScene() {
 		wi = 1 - l % 2;
 		ri = l % 2;
 		//qDebug() << "  pass" << l << "read from" << ri << "write to" << wi;
-		glActiveTextureChannel(6);
+		glActiveTexture(GL_TEXTURE0 + 6);
 		glBindTexture(GL_TEXTURE_2D, fbo_out.colorTexture(ri));
 		fbo_out.setWriteBuffer(wi);
 		setupDSLights(l, mview * moffset);
@@ -198,25 +198,25 @@ void RendererDeferredShading::renderScene() {
 	//fbo_out.release();
 	wi = 1 - passes % 2;
 	ri = passes % 2;
-	glActiveTextureChannel(0);
+	glActiveTexture(GL_TEXTURE0);
 	glBindTexture(GL_TEXTURE_2D, fbo_out.colorTexture(ri));
 
 	if (view.isFeatureEnabled(QGLView::qglSSAOEnabled)) {
 		fbo_out.setWriteBuffer(2);
 		fbo_out.setReadBuffer(ri);
 		glBlitFramebuffer(0, 0, fbo_out.width(), fbo_out.height(), 0, 0, fbo_out.width(), fbo_out.height(), GL_COLOR_BUFFER_BIT, GL_NEAREST);
-		glActiveTextureChannel(1);
+		glActiveTexture(GL_TEXTURE0 + 1);
 		glBindTexture(GL_TEXTURE_2D, fbo_out.colorTexture(2));
-		glActiveTextureChannel(2);
+		glActiveTexture(GL_TEXTURE0 + 2);
 		glBindTexture(GL_TEXTURE_2D, fbo_g.colorTexture(1));
-		glActiveTextureChannel(0);
+		glActiveTexture(GL_TEXTURE0);
 		//glBindTexture(GL_TEXTURE_2D, fbo_out.colorTexture(ri));
 		//glActiveTextureChannel(1);
 		//glBindTexture(GL_TEXTURE_2D, fbo_g.colorTexture(0));
 		int lri = ri, lwi = wi;//, lms = ri;
 		shader_ssao_blur->bind();
 		shader_ssao_blur->setUniformValue("qgl_ModelViewProjectionMatrix", QMatrix4x4());
-		shader_ssao_blur->setUniformValue("dt", QVector2D(1. / fbo_out.width(), 1. / fbo_out.height()));
+		shader_ssao_blur->setUniformValue("dt", QVector2D(1.f / fbo_out.width(), 1.f / fbo_out.height()));
 		shader_ssao_blur->setUniformValue("t0", 0);
 		shader_ssao_blur->setUniformValue("ts", 1);
 		shader_ssao_blur->setUniformValue("tg1", 2);
@@ -249,18 +249,18 @@ void RendererDeferredShading::renderScene() {
 			glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
 		}
 		glBindTexture(GL_TEXTURE_2D, fbo_out.colorTexture(lri));
-		glActiveTextureChannel(1);
+		glActiveTexture(GL_TEXTURE0 + 1);
 		glBindTexture(GL_TEXTURE_2D, fbo_out.colorTexture(2));
 		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
 		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
-		glActiveTextureChannel(2);
+		glActiveTexture(GL_TEXTURE0 + 2);
 		glBindTexture(GL_TEXTURE_2D, fbo_g.colorTexture(1));
-		glActiveTextureChannel(3);
+		glActiveTexture(GL_TEXTURE0 + 3);
 		glBindTexture(GL_TEXTURE_1D, tnoise);
 		shader_ssao_merge->bind();
 		shader_ssao_merge->setUniformValue("qgl_ModelViewProjectionMatrix", QMatrix4x4());
-		shader_ssao_merge->setUniformValue("z_far", GLfloat(view.depthEnd()));
-		shader_ssao_merge->setUniformValue("z_near", GLfloat(view.depthStart()));
+		shader_ssao_merge->setUniformValue("z_far", view.depthEnd());
+		shader_ssao_merge->setUniformValue("z_near", view.depthStart());
 		shader_ssao_merge->setUniformValue("mat_proj", mproj);
 		shader_ssao_merge->setUniformValue("n0", 3);
 		shader_ssao_merge->setUniformValue("t0", 0);
@@ -273,27 +273,27 @@ void RendererDeferredShading::renderScene() {
 		ri = lwi;
 		//piSwap<int>(wi, ri);
 
-		glActiveTextureChannel(0);
+		glActiveTexture(GL_TEXTURE0);
 		glBindTexture(GL_TEXTURE_2D, fbo_out.colorTexture(ri));
 		//piSwap<int>(wi, ri);
 	}
 
 	if (view.isFeatureEnabled(QGLView::qglReflectionsEnabled)) {
 		fbo_out.setWriteBuffer(2);
-		glActiveTextureChannel(0);
+		glActiveTexture(GL_TEXTURE0);
 		glBindTexture(GL_TEXTURE_2D, fbo_out.colorTexture(ri));
 		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);//_MIPMAP_LINEAR);
 		//glGenerateMipmap(GL_TEXTURE_2D);
-		glActiveTextureChannel(1);
+		glActiveTexture(GL_TEXTURE0 + 1);
 		glBindTexture(GL_TEXTURE_2D, fbo_g.colorTexture(0));
-		glActiveTextureChannel(2);
+		glActiveTexture(GL_TEXTURE0 + 2);
 		glBindTexture(GL_TEXTURE_2D, fbo_g.colorTexture(1));
 		fbo_g.bindDepthTexture(7);
 		shader_ssr->bind();
 		shader_ssr->setUniformValue("qgl_ModelViewProjectionMatrix", QMatrix4x4());
-		shader_ssr->setUniformValue("z_far", GLfloat(view.depthEnd()));
-		shader_ssr->setUniformValue("z_near", GLfloat(view.depthStart()));
+		shader_ssr->setUniformValue("z_far", view.depthEnd());
+		shader_ssr->setUniformValue("z_near", view.depthStart());
 		shader_ssr->setUniformValue("mat_proj", mproj);
 		shader_ssr->setUniformValue("t0", 1);
 		shader_ssr->setUniformValue("t1", 2);
@@ -301,12 +301,12 @@ void RendererDeferredShading::renderScene() {
 		shader_ssr->setUniformValue("td", 7);
 		glDrawQuad(shader_ssr, corner_dirs);
 
-		glActiveTextureChannel(0);
+		glActiveTexture(GL_TEXTURE0);
 		int lri = 2, lwi = wi, lms = ri;
 		if (view.isFeatureEnabled(QGLView::qglReflectionsBlur)) {
 			shader_ssr_blur->bind();
 			shader_ssr_blur->setUniformValue("qgl_ModelViewProjectionMatrix", QMatrix4x4());
-			shader_ssr_blur->setUniformValue("dt", QVector2D(1. / fbo_out.width(), 1. / fbo_out.height()));
+			shader_ssr_blur->setUniformValue("dt", QVector2D(1.f / fbo_out.width(), 1.f / fbo_out.height()));
 			shader_ssr_blur->setUniformValue("t0", 0);
 			int passes = 5;
 			int crad = 1;
@@ -326,9 +326,9 @@ void RendererDeferredShading::renderScene() {
 		ri = 1 - lms;
 
 		glBindTexture(GL_TEXTURE_2D, fbo_out.colorTexture(wi));
-		glActiveTextureChannel(1);
+		glActiveTexture(GL_TEXTURE0 + 1);
 		glBindTexture(GL_TEXTURE_2D, fbo_g.colorTexture(1));
-		glActiveTextureChannel(2);
+		glActiveTexture(GL_TEXTURE0 + 2);
 		glBindTexture(GL_TEXTURE_2D, fbo_out.colorTexture(lms));
 		shader_ssr_merge->bind();
 		shader_ssr_merge->setUniformValue("qgl_ModelViewProjectionMatrix", QMatrix4x4());
@@ -341,7 +341,7 @@ void RendererDeferredShading::renderScene() {
 		ri = 1 - ri;
 		//piSwap<int>(wi, ri);
 
-		glActiveTextureChannel(0);
+		glActiveTexture(GL_TEXTURE0);
 		glBindTexture(GL_TEXTURE_2D, fbo_out.colorTexture(wi));
 		piSwap<int>(wi, ri);
 	}
@@ -353,43 +353,43 @@ void RendererDeferredShading::renderScene() {
 			fbo_g.bind();
 			glReadPixels(fbo_out.width() / 2, fbo_out.height() / 2, 1, 1, GL_DEPTH_COMPONENT, GL_FLOAT, &cw);
 			fbo_out.bind();
-			const double _pe = 2.4e-7;
-			double cz = cw + cw - 1;
-			cz = ((_pe - 2.) * view.depthStart()) / (cz + _pe - 1.); // infinite depth
-			double z = view.feature(QGLView::qglDepthOfFieldFocus).toDouble(),
-					s = view.feature(QGLView::qglDepthOfFieldAutoFocusSpeed).toDouble();
-			z = z * (1. - s) + cz * s;
+			const float _pe = 2.4e-7f;
+			float cz = cw + cw - 1;
+			cz = ((_pe - 2.f) * view.depthStart()) / (cz + _pe - 1.f); // infinite depth
+			float z = view.feature(QGLView::qglDepthOfFieldFocus).toFloat(),
+					s = view.feature(QGLView::qglDepthOfFieldAutoFocusSpeed).toFloat();
+			z = z * (1.f - s) + cz * s;
 			view.setFeature(QGLView::qglDepthOfFieldFocus, z);
 		}
 		shader_dof->bind();
 		shader_dof->setUniformValue("qgl_ModelViewProjectionMatrix", QMatrix4x4());
-		shader_dof->setUniformValue("z_far", GLfloat(view.depthEnd()));
-		shader_dof->setUniformValue("z_near", GLfloat(view.depthStart()));
-		shader_dof->setUniformValue("focus", GLfloat(view.feature(QGLView::qglDepthOfFieldFocus).toDouble()));
-		shader_dof->setUniformValue("diaphragm", GLfloat(view.feature(QGLView::qglDepthOfFieldDiaphragm).toDouble()));
+		shader_dof->setUniformValue("z_far", view.depthEnd());
+		shader_dof->setUniformValue("z_near", view.depthStart());
+		shader_dof->setUniformValue("focus", view.feature(QGLView::qglDepthOfFieldFocus).toFloat());
+		shader_dof->setUniformValue("diaphragm", view.feature(QGLView::qglDepthOfFieldDiaphragm).toFloat());
 		shader_dof->setUniformValue("t0", 0);
 		shader_dof->setUniformValue("td", 7);
 		fbo_g.bindDepthTexture(7);
-		glActiveTextureChannel(0);
+		glActiveTexture(GL_TEXTURE0);
 
 		int passes = 3;
 		float crad = 1.;
 		for (int p = 0; p < passes; ++p) {
-			shader_dof->setUniformValue("radius", GLfloat(crad));
+			shader_dof->setUniformValue("radius", crad);
 			fbo_out.setWriteBuffer(wi);
 			glBindTexture(GL_TEXTURE_2D, fbo_out.colorTexture(ri));
-			shader_dof->setUniformValue("dt", QVector2D(1. / fbo_out.width(), 0.));
+			shader_dof->setUniformValue("dt", QVector2D(1.f / fbo_out.width(), 0.f));
 			glDrawQuad(shader_dof);
 			piSwap<int>(wi, ri);
 			fbo_out.setWriteBuffer(wi);
 			glBindTexture(GL_TEXTURE_2D, fbo_out.colorTexture(ri));
-			shader_dof->setUniformValue("dt", QVector2D(0., 1. / fbo_out.height()));
+			shader_dof->setUniformValue("dt", QVector2D(0.f, 1.f / fbo_out.height()));
 			glDrawQuad(shader_dof);
 			piSwap<int>(wi, ri);
-			crad *= 2.;
+			crad *= 2.f;
 		}
 
-		glActiveTextureChannel(0);
+		glActiveTexture(GL_TEXTURE0);
 		glBindTexture(GL_TEXTURE_2D, fbo_out.colorTexture(ri));
 	}
 
@@ -411,11 +411,11 @@ void RendererDeferredShading::renderScene() {
 			//if (min[2] > hcontent[i].z) min[2] = hcontent[i].z;
 			if (max[2] < hcontent[i].z) max[2] = hcontent[i].z;
 		}
-		GLfloat mluma = (0.299 * max[0]) + (0.587 * max[1]) + (0.114 * max[2]);
-		double nexp = mluma / 16., dexp = nexp - exposure_, mestep = exposure_ * view.feature(QGLView::qglEyeAccomodationMaxSpeed).toDouble();
-		dexp /= view.feature(QGLView::qglEyeAccomodationTime).toDouble();
-		if (dexp > 0. && dexp > mestep/4) dexp = mestep/4;
-		if (dexp < 0. && dexp < -mestep) dexp = -mestep;
+		GLfloat mluma = (0.299f * max[0]) + (0.587f * max[1]) + (0.114f * max[2]);
+		float nexp = mluma / 16.f, dexp = nexp - exposure_, mestep = exposure_ * view.feature(QGLView::qglEyeAccomodationMaxSpeed).toFloat();
+		dexp /= view.feature(QGLView::qglEyeAccomodationTime).toFloat();
+		if (dexp > 0.f && dexp > mestep/4) dexp = mestep/4;
+		if (dexp < 0.f && dexp < -mestep) dexp = -mestep;
 		exposure_ += dexp;
 		label_exp->setText(QString("exposure: %1").arg(exposure_));
 		label_exp_step->setText(QString("d_exposure: %1").arg(dexp));
@@ -428,7 +428,7 @@ void RendererDeferredShading::renderScene() {
 		shader_hdr->bind();
 		shader_hdr->setUniformValue("qgl_ModelViewProjectionMatrix", QMatrix4x4());
 		shader_hdr->setUniformValue("t0", 0);
-		shader_hdr->setUniformValue("exposure", GLfloat(1./exposure_));
+		shader_hdr->setUniformValue("exposure", GLfloat(1.f/exposure_));
 		glDrawQuad(shader_hdr);
 		glBindTexture(GL_TEXTURE_2D, fbo_out.colorTexture(wi));
 		piSwap<int>(wi, ri);
@@ -436,17 +436,17 @@ void RendererDeferredShading::renderScene() {
 
 	if (view.isFeatureEnabled(QGLView::qglMotionBlurEnabled)) {
 		fbo_out.setWriteBuffer(wi);
-		glActiveTextureChannel(1);
+		glActiveTexture(GL_TEXTURE0 + 1);
 		glBindTexture(GL_TEXTURE_2D, fbo_g.colorTexture(4));
 		shader_motion_blur->bind();
 		shader_motion_blur->setUniformValue("qgl_ModelViewProjectionMatrix", QMatrix4x4());
-		shader_motion_blur->setUniformValue("dt", QVector2D(1. / fbo_out.width(), 1. / fbo_out.height()));
+		shader_motion_blur->setUniformValue("dt", QVector2D(1.f / fbo_out.width(), 1.f / fbo_out.height()));
 		shader_motion_blur->setUniformValue("t0", 0);
 		shader_motion_blur->setUniformValue("ts", 1);
-		shader_motion_blur->setUniformValue("factor", GLfloat(view.feature(QGLView::qglMotionBlurFactor).toDouble()));
+		shader_motion_blur->setUniformValue("factor", view.feature(QGLView::qglMotionBlurFactor).toFloat());
 		shader_motion_blur->setUniformValue("steps", view.feature(QGLView::qglMotionBlurSteps).toInt());
 		glDrawQuad(shader_motion_blur);
-		glActiveTextureChannel(0);
+		glActiveTexture(GL_TEXTURE0);
 		glBindTexture(GL_TEXTURE_2D, fbo_out.colorTexture(wi));
 		piSwap<int>(wi, ri);
 	}
@@ -460,16 +460,16 @@ void RendererDeferredShading::renderScene() {
 		fbo_out.setWriteBuffer(wi);
 		shader_bloom_0->bind();
 		shader_bloom_0->setUniformValue("qgl_ModelViewProjectionMatrix", QMatrix4x4());
-		shader_bloom_0->setUniformValue("factor", GLfloat(view.feature(QGLView::qglBloomFactor).toDouble()));
-		shader_bloom_0->setUniformValue("threshold", GLfloat(view.feature(QGLView::qglBloomThreshold).toDouble()));
+		shader_bloom_0->setUniformValue("factor", view.feature(QGLView::qglBloomFactor).toFloat());
+		shader_bloom_0->setUniformValue("threshold", view.feature(QGLView::qglBloomThreshold).toFloat());
 		shader_bloom_0->setUniformValue("t0", 0);
 		glDrawQuad(shader_bloom_0);
-		glActiveTextureChannel(0);
+		glActiveTexture(GL_TEXTURE0);
 		piSwap<int>(wi, ri);
 
 		shader_bloom_1->bind();
 		shader_bloom_1->setUniformValue("qgl_ModelViewProjectionMatrix", QMatrix4x4());
-		shader_bloom_1->setUniformValue("dt", QVector2D(1. / fbo_out.width(), 1. / fbo_out.height()));
+		shader_bloom_1->setUniformValue("dt", QVector2D(1.f / fbo_out.width(), 1.f / fbo_out.height()));
 		shader_bloom_1->setUniformValue("t0", 0);
 		int radius = view.feature(QGLView::qglBloomRadius).toInt();
 		int passes = qMax<int>(int(ceil(log2(radius))), 1);
@@ -486,28 +486,28 @@ void RendererDeferredShading::renderScene() {
 		}
 	//qDebug() << tm.elapsed();
 		fbo_out.setWriteBuffer(wi);
-		glActiveTextureChannel(0);
+//		glActiveTextureChannel(0);
 		glBindTexture(GL_TEXTURE_2D, fbo_out.colorTexture(ri));
-		glActiveTextureChannel(1);
+		glActiveTexture(GL_TEXTURE0 + 1);
 		glBindTexture(GL_TEXTURE_2D, fbo_out.colorTexture(2));
 		shader_fbo_add->bind();
 		shader_fbo_add->setUniformValue("qgl_ModelViewProjectionMatrix", QMatrix4x4());
 		shader_fbo_add->setUniformValue("t0", 0);
 		shader_fbo_add->setUniformValue("t1", 1);
 		glDrawQuad(shader_fbo_add);
-		glActiveTextureChannel(0);
+		glActiveTexture(GL_TEXTURE0);
 		glBindTexture(GL_TEXTURE_2D, fbo_out.colorTexture(wi));
 		piSwap<int>(wi, ri);
 	}
 
-	glReleaseShaders();
+	glUseProgram(0);
 	fbo_out.release();
 
 	if (view.isFeatureEnabled(QGLView::qglFXAA)) {
 		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 		shader_fxaa->bind();
-		shader_fxaa->setUniformValue("dt", QVector2D(1. / view.width(), 1. / view.height()));
+		shader_fxaa->setUniformValue("dt", QVector2D(1.f / view.width(), 1.f / view.height()));
 	} else {
 		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
 		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
@@ -546,9 +546,9 @@ void RendererDeferredShading::reloadShaders() {
 
 
 void RendererDeferredShading::setupShadersTextures(GLObjectBase & object, GLRendererBase::RenderingParameters & rp) {
-	glActiveTextureChannel(6);
+	glActiveTexture(GL_TEXTURE0 + 6);
 	glBindTexture(GL_TEXTURE_2D, white_image_id);
-	glActiveTextureChannel(7);
+	glActiveTexture(GL_TEXTURE0 + 7);
 	glBindTexture(GL_TEXTURE_2D, violent_image_id);
 }
 
@@ -566,7 +566,7 @@ void RendererDeferredShading::setupDSLights(int pass, const QMatrix4x4 & view_ma
 	QVector<Light*> lv;
 	for (int i = light_start; i < light_end; ++i) {
 		lv << view.lights()[i];
-		glActiveTextureChannel(shadow_start + i - light_start);
+		glActiveTexture(GL_TEXTURE0 + shadow_start + i - light_start);
 		glBindTexture(GL_TEXTURE_2D, lv.back()->shadow_map.depthTexture());
 		if (view.isFeatureEnabled(QGLView::qglShadowsSoftEnabled)) {
 			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
diff --git a/qglview/renderer_deferred_shading.h b/qglview/renderer_deferred_shading.h
index b0cf1d9..e3fbf8f 100644
--- a/qglview/renderer_deferred_shading.h
+++ b/qglview/renderer_deferred_shading.h
@@ -43,7 +43,7 @@ private:
 	typedef QPair<QString, QOpenGLShaderProgram **> ShaderPair;
 
 	int cplc, lights_per_pass;
-	double exposure_;
+	float exposure_;
 	GLFramebuffer fbo_g, fbo_out, fbo_hsmall;
 	QOpenGLShaderProgram * shader_fxaa, * shader_ds_0, * shader_ds_1, * shader_hdr, * shader_small;
 	QOpenGLShaderProgram * shader_bloom_0, * shader_bloom_1, * shader_motion_blur, * shader_fbo_add;
diff --git a/qglview/renderer_simple.cpp b/qglview/renderer_simple.cpp
index 7cc6142..7c77248 100644
--- a/qglview/renderer_simple.cpp
+++ b/qglview/renderer_simple.cpp
@@ -72,7 +72,7 @@ void RendererSimple::renderScene() {
 			glDepthFunc(GL_EQUAL);
 		}
 		//view.camera().apply(view.aspect);
-		rp.cam_offset_matrix = view.camera().offsetMatrix();
+		rp.cam_offset_matrix = view.camera()->offsetMatrix();
 		rp.prepare();
 		setupLights(l, 8);
 		
@@ -90,16 +90,16 @@ void RendererSimple::renderScene() {
 		}
 		fbo_c.release();*/
 		//qDebug() << rp.viewproj_matrix << (getGLMatrix(GL_PROJECTION_MATRIX)*getGLMatrix(GL_MODELVIEW_MATRIX));
-		renderObjects(GLObjectBase::Solid, l, 0, true, view.isLightEnabled(), view.isFogEnabled());
+		renderObjects(GLObjectBase::Solid, l, nullptr, true, view.isLightEnabled(), view.isFogEnabled());
 		
 		
 		//renderObjects(GLObjectBase::Solid, l, 0, true, true, view.isFogEnabled());
-		renderObjects(GLObjectBase::Transparent, l, 0, true, true, view.isFogEnabled());
+		renderObjects(GLObjectBase::Transparent, l, nullptr, true, true, view.isFogEnabled());
 		if (passes > 1) {
 			glSetLightEnabled(false);
 			glSetCapEnabled(GL_BLEND);
 			glBlendFunc(GL_ONE, GL_ONE);
-			glReleaseTextures();
+			view.glReleaseTextures();
 			glBindTexture(GL_TEXTURE_2D, fbo.colorTexture(1));
 			glDisableDepth();
 			fbo.setWriteBuffer(0);
@@ -109,7 +109,7 @@ void RendererSimple::renderScene() {
 	if (view.isFeatureEnabled(QGLView::qglFXAA) || passes > 1) {
 		fbo.release();
 		//glClearFramebuffer();
-		glActiveTextureChannel(0);
+		glActiveTexture(GL_TEXTURE0);
 		glBindTexture(GL_TEXTURE_2D, fbo.colorTexture());
 		glSetLightEnabled(false);
 		glSetCapEnabled(GL_BLEND, false);
@@ -118,7 +118,7 @@ void RendererSimple::renderScene() {
 			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 			shader_fxaa->bind();
-			shader_fxaa->setUniformValue("dt", QVector2D(1. / view.width(), 1. / view.height()));
+			shader_fxaa->setUniformValue("dt", QVector2D(1.f / view.width(), 1.f / view.height()));
 			glDrawQuad();
 			shader_fxaa->release();
 		} else {