diff --git a/qglview/glcamera.cpp b/qglview/glcamera.cpp
index 359334e..09c8ea2 100644
--- a/qglview/glcamera.cpp
+++ b/qglview/glcamera.cpp
@@ -48,7 +48,7 @@ void Camera::apply(const GLdouble & aspect) {
 		glScaled(aspect, aspect, 1.);
 	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);;
+	//qDebug() << pm;// << glMatrixPerspective(fov_, aspect, depth_start, depth_end);
 	setGLMatrix(pm);
 	glMatrixMode(GL_MODELVIEW);
 	pm.setToIdentity();
diff --git a/qglview/glrendererbase.cpp b/qglview/glrendererbase.cpp
index 95e20b7..cbdf97c 100644
--- a/qglview/glrendererbase.cpp
+++ b/qglview/glrendererbase.cpp
@@ -238,11 +238,13 @@ void GLRendererBase::renderShadow(Light * l, QGLShaderProgram * prog, QMatrix4x4
 	cam.setDepthEnd(view.camera().depthEnd());
 	cam.setFOV(l->angle_end);
 	cam.apply(1.);
-	cam.rotateXY(l->angle_end);
-	l->dir0 = cam.direction();
+	/*cam.rotateXY(l->angle_end);
+	QVector3D rdir = l->direction * cos(l->angle_end / 2. * deg2rad);
+	l->dir0 = cam.direction() - rdir;
 	cam.rotateXY(-l->angle_end);
 	cam.rotateZ(l->angle_end);
-	l->dir1 = cam.direction();
+	l->dir1 = cam.direction() - rdir;*/
+	//qDebug() << rdir << l->dir0 << l->dir1;
 	RenderingParameters rpl;
 	rpl.pass = GLObjectBase::Solid;
 	rpl.shaders = prog;
@@ -252,7 +254,7 @@ void GLRendererBase::renderShadow(Light * l, QGLShaderProgram * prog, QMatrix4x4
 	QMatrix4x4 mbias;
 	mbias.scale(0.5, 0.5, 0.5);
 	mbias.translate(1., 1., 1.);
-	l->shadow_matrix = mbias*rpl.proj_matrix*rpl.view_matrix;//*mat;//;// * mbias;
+	l->shadow_matrix = mbias*rpl.proj_matrix*rpl.view_matrix*mat;//;// * mbias;
 	//qDebug() << mbias;
 	//glPushMatrix();
 	renderSingleShadow(view.objects_, rpl);
diff --git a/qglview/glshaders.cpp b/qglview/glshaders.cpp
index 98b6d96..1d3785d 100644
--- a/qglview/glshaders.cpp
+++ b/qglview/glshaders.cpp
@@ -67,9 +67,9 @@ const char qgl_structs[] =
 	"	float quadraticAttenuation;\n"
 	"	sampler2DShadow shadow;\n"
 	//"	sampler2D shadowColor\n"
-	//"	mat4 shadowMatrix;\n"
-	"	vec4 shadowDir0;\n"
-	"	vec4 shadowDir1;\n"
+	"	mat4 shadowMatrix;\n"
+	//"	vec4 shadowDir0;\n"
+	//"	vec4 shadowDir1;\n"
 	"};\n"
 	"struct QGLMap {\n"
 	"	float offset;\n"
@@ -217,7 +217,7 @@ void setUniformLights(QGLShaderProgram * prog, const QVector<Light*> & lights, c
 */
 void setUniformLight(QGLShaderProgram * prog, Light * light, QString ulightn, const QMatrix4x4 & mat, int shadow) {
 	QMatrix4x4 m = mat * light->worldTransform();
-	QVector4D pos(0, 0, 0, 1.), dir(light->direction), dir0(light->dir0), dir1(light->dir1);
+	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.;
@@ -237,8 +237,8 @@ void setUniformLight(QGLShaderProgram * prog, Light * light, QString ulightn, co
 	prog->setUniformValue((ulightn + ".quadraticAttenuation").toLatin1().constData(), GLfloat(light->decay_quadratic));
 	prog->setUniformValue((ulightn + ".shadow").toLatin1().constData(), shadow);
 	prog->setUniformValue((ulightn + ".shadowColor").toLatin1().constData(), shadow);
-	prog->setUniformValue((ulightn + ".shadowDir0").toLatin1().constData(), (mat * dir0).normalized());
-	prog->setUniformValue((ulightn + ".shadowDir1").toLatin1().constData(), (mat * dir1).normalized());
+	prog->setUniformValue((ulightn + ".shadowMatrix").toLatin1().constData(), light->shadow_matrix);
+	//prog->setUniformValue((ulightn + ".shadowDir0").toLatin1().constData(), (mat * dir0));
+	//prog->setUniformValue((ulightn + ".shadowDir1").toLatin1().constData(), (mat * dir1));
 	//qDebug() << light->direction << light->dir0 << light->dir1;
-	//prog->setUniformValue((ulightn + ".shadowMatrix").toLatin1().constData(), light->shadow_matrix);
 }
diff --git a/qglview/gltypes.cpp b/qglview/gltypes.cpp
index d27782d..bc8cbf4 100644
--- a/qglview/gltypes.cpp
+++ b/qglview/gltypes.cpp
@@ -51,19 +51,19 @@ QString findFile(const QString & file, const QStringList & pathes) {
 }
 
 
-void glDrawQuad(QGLShaderProgram * prog, GLfloat x, GLfloat y, GLfloat w, GLfloat h) {
+void glDrawQuad(QGLShaderProgram * prog, QVector4D * corner_dirs, GLfloat x, GLfloat y, GLfloat w, GLfloat h) {
 	glResetAllTransforms();
 	glSetPolygonMode(GL_FILL);
 	int loc = prog ? prog->attributeLocation("qgl_Color") : 0,
 		locv = prog ? prog->attributeLocation("qgl_Vertex") : 0,
-		loct = prog ? prog->attributeLocation("qgl_Texture") : 0;
-		//locc = prog ? prog->attributeLocation("view_corner") : 0;
+		loct = prog ? prog->attributeLocation("qgl_Texture") : 0,
+		locc = prog ? prog->attributeLocation("view_corner") : 0;
 	glBegin(GL_QUADS);
 	if (prog) glVertexAttrib3f(loc, 1.f, 1.f, 1.f); glColor3f(1.f, 1.f, 1.f);
-	if (prog) {/*prog->setAttributeValue(locc, corner_dirs[0]);*/ glVertexAttrib2f(loct, 0.f, 0.f); glVertexAttrib2f(locv, x, y);} glTexCoord2f(0.f, 0.f); glVertex2f(x, y);
-	if (prog) {/*prog->setAttributeValue(locc, corner_dirs[1]);*/ glVertexAttrib2f(loct, 1.f, 0.f); glVertexAttrib2f(locv, x + w, y);} glTexCoord2f(1.f, 0.f); glVertex2f(x + w, y);
-	if (prog) {/*prog->setAttributeValue(locc, corner_dirs[2]);*/ glVertexAttrib2f(loct, 1.f, 1.f); glVertexAttrib2f(locv, x + w, y + h);} glTexCoord2f(1.f, 1.f); glVertex2f(x + w, y + h);
-	if (prog) {/*prog->setAttributeValue(locc, corner_dirs[3]);*/ glVertexAttrib2f(loct, 0.f, 1.f); glVertexAttrib2f(locv, x, y + h);} glTexCoord2f(0.f, 1.f); glVertex2f(x, y + h);
+	if (prog) {if (corner_dirs) prog->setAttributeValue(locc, corner_dirs[0]); glVertexAttrib2f(loct, 0.f, 0.f); glVertexAttrib2f(locv, x, y);} glTexCoord2f(0.f, 0.f); glVertex2f(x, y);
+	if (prog) {if (corner_dirs) prog->setAttributeValue(locc, corner_dirs[1]); glVertexAttrib2f(loct, 1.f, 0.f); 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]); glVertexAttrib2f(loct, 1.f, 1.f); 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]); glVertexAttrib2f(loct, 0.f, 1.f); glVertexAttrib2f(locv, x, y + h);} glTexCoord2f(0.f, 1.f); glVertex2f(x, y + h);
 	glEnd();
 }
 
diff --git a/qglview/gltypes.h b/qglview/gltypes.h
index 16a25af..7c5d8e2 100644
--- a/qglview/gltypes.h
+++ b/qglview/gltypes.h
@@ -155,7 +155,7 @@ 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(QGLShaderProgram * prog = 0, GLfloat x = -1.f, GLfloat y = -1.f, GLfloat w = 2.f, GLfloat h = 2.f);
+void glDrawQuad(QGLShaderProgram * prog = 0, QVector4D * corner_dirs = 0, 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;}
diff --git a/qglview/qglview.cpp b/qglview/qglview.cpp
index 8b48289..d01526b 100644
--- a/qglview/qglview.cpp
+++ b/qglview/qglview.cpp
@@ -403,7 +403,11 @@ void QGLView::renderHalo(const GLObjectBase * obj, const int iid, const QColor &
 void QGLView::renderSelection() {
 	cid = 1;
 	ids.clear();
-	if (shaders_supported) sh_id_loc = shader_select->uniformLocation("id");
+	if (shaders_supported) {
+		sh_id_loc = shader_select->uniformLocation("id");
+		shader_select->setUniformValue("z_far", GLfloat(depthEnd()));
+		shader_select->setUniformValue("z_near", GLfloat(depthStart()));
+	}
 	//qDebug() << sh_id_loc;
 	start_rp.view_matrix = getGLMatrix(GL_MODELVIEW_MATRIX);
 	glPushMatrix();
diff --git a/qglview/renderer_deferred_shading.cpp b/qglview/renderer_deferred_shading.cpp
index 8ec43fc..fe51334 100644
--- a/qglview/renderer_deferred_shading.cpp
+++ b/qglview/renderer_deferred_shading.cpp
@@ -68,10 +68,13 @@ void RendererDeferredShading::renderScene() {
 	QMatrix4x4 mviewproji = (mview * mproj).inverted();
 	rp.prev_proj_matrix = prev_proj;
 	rp.prev_view_matrix = prev_view;
-	corner_dirs[0] = (QVector4D(-1, -1, 1, 1) * rp.viewproj_matrix).normalized();
-	corner_dirs[1] = (QVector4D( 1, -1, 1, 1) * rp.viewproj_matrix).normalized();
-	corner_dirs[2] = (QVector4D( 1,  1, 1, 1) * rp.viewproj_matrix).normalized();
-	corner_dirs[3] = (QVector4D(-1,  1, 1, 1) * rp.viewproj_matrix).normalized();
+	QMatrix4x4 vc_proji;
+	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));
+	corner_dirs[2] = (mproji * QVector4D(-1, -1, 0, 1));
+	corner_dirs[3] = (mproji * QVector4D( 1, -1, 0, 1));
 	//qDebug() << corner_dirs[0] << corner_dirs[1] << corner_dirs[2] << corner_dirs[3];
 	fbo_g.bind();
 	int buffs[] = {0, 1, 2, 3, 4};
@@ -179,7 +182,7 @@ void RendererDeferredShading::renderScene() {
 		glBindTexture(GL_TEXTURE_2D, fbo_out.colorTexture(ri));
 		fbo_out.setWriteBuffer(wi);
 		setupDSLights(l, mview);
-		glDrawQuad(shader_ds_1);
+		glDrawQuad(shader_ds_1, corner_dirs);
 		//break;
 	}
 	//fbo_out.release();
diff --git a/qglview/shaders/dsl_pass_0.frag b/qglview/shaders/dsl_pass_0.frag
index f3acccd..9b2ec41 100644
--- a/qglview/shaders/dsl_pass_0.frag
+++ b/qglview/shaders/dsl_pass_0.frag
@@ -1,8 +1,11 @@
 #version 150
 
+//#extension GL_ARB_conservative_depth: enable
+//layout(depth_less) out float gl_FragDepth;
+
 in vec3 src_normal, normal, binormal;//, et;
 in vec4 pos, ppos;
-in float fogCoord;
+in float fogCoord, logz;
 in mat3 TBN;
 
 uniform bool acc_fog;
@@ -12,7 +15,7 @@ uniform float z_far, z_near;
 const vec3 luma = vec3(0.299, 0.587, 0.114);
 
 void main(void) {
-	float z = pos.w;//((z_near / (z_near-z_far)) * z_far) / (pos.w - (z_far / (z_far-z_near)));
+	//float z = pos.w;//((z_near / (z_near-z_far)) * z_far) / (pos.w - (z_far / (z_far-z_near)));
 	vec4 dc = qgl_FragColor;
 	vec2 tc = qgl_FragTexture.xy;
 	float hei = dot(texture(qgl_Material.map_relief.map, tc).rgb, luma) * qgl_Material.map_relief.amount + qgl_Material.map_relief.offset;
@@ -46,7 +49,8 @@ void main(void) {
 	vec3 speed = pos.xyz/pos.w - ppos.xyz/ppos.w;
 	//speed /= abs(pos.z);
 
-	qgl_FragData[0] = vec4(dc.rgb, pos.w);
+	gl_FragDepth = logz;
+	qgl_FragData[0] = vec4(dc.rgb, pos.z);
 	qgl_FragData[1] = vec4(n.xyz / 2. + vec3(0.5), specularity);
 	qgl_FragData[2] = vec4(spec.rgb, hei);
 	qgl_FragData[3] = vec4(self.rgb, bn.x);
diff --git a/qglview/shaders/dsl_pass_0.vert b/qglview/shaders/dsl_pass_0.vert
index 2a9baca..39c2f68 100644
--- a/qglview/shaders/dsl_pass_0.vert
+++ b/qglview/shaders/dsl_pass_0.vert
@@ -2,13 +2,17 @@
 
 out vec3 src_normal, normal, binormal;//, et;
 out vec4 pos, ppos;
-out float fogCoord, fs_gid;
+out float fogCoord, logz;
 out mat3 TBN;
 
 uniform bool acc_fog;
 uniform vec2 dt;
 uniform vec3 eye;
 uniform mat4 prev_ModelViewProjectioMatrix;
+uniform float z_near, z_far;
+
+const float C = 0.0001;
+float FC = 1. / log(z_far * C + 1.);
 
 void main(void) {
 	normal = qgl_Normal;//(qgl_NormalMatrix * qgl_Normal);
@@ -33,5 +37,11 @@ void main(void) {
 	//speed /= (abs(speed) + 1.);
 	//speed.xyz *= speed.w;
 	//pos *= pos.w;
+
+	//logz = gl_Position.w*C + 1;  //version with fragment code
+	logz = log(pos.w * C + 1.) * FC;
+	//pos.z = (logz + logz - 1) * pos.w;
+
 	gl_Position = pos;
+
 }
diff --git a/qglview/shaders/dsl_pass_1.frag b/qglview/shaders/dsl_pass_1.frag
index b209d6c..57bb556 100644
--- a/qglview/shaders/dsl_pass_1.frag
+++ b/qglview/shaders/dsl_pass_1.frag
@@ -1,7 +1,8 @@
 #version 150
 //#extension GL_EXT_gpu_shader4 : enable
 
-in vec4 view_dir, view_pos;
+in vec3 view_dir;
+in vec4 view_pos;
 
 uniform vec3 ambient;
 uniform sampler2D t0, t1, t2, t3, t4, t_pp;
@@ -22,9 +23,10 @@ vec3 vds, vds2;
 float sh_pow, sh_mul, dist, NdotL, NdotH, spot, ldist, diff, sdist, shadow;
 
 float getShadow(int light, vec3 view_pos, vec3 dpos) {
-	shp = mat_viewi * vec4(view_pos, 1);
-	shp += vec4(dpos, 0);
-	//shp = qgl_Light[light].shadowMatrix * shp;
+	//shp = mat_viewi * vec4(view_pos, 1);
+	//shp += vec4(dpos, 0);
+
+	shp = qgl_Light[light].shadowMatrix * vec4(view_pos, 1);
 	//shp.xyz /= shp.w;
 	shp.z -= 0.1;
 	return textureProj(qgl_Light[light].shadow, shp);
@@ -51,7 +53,7 @@ void calcLight(in int index, in vec3 n, in vec3 v, in vec4 v2) {
 			//spot *= clamp(1. - sdist, 0, 1);
 			vds = ds * bn.xyz;
 			vds2 = ds * bn2.xyz;
-			float shadow = 1;/* getShadow(index, pos.xyz, vec3(0))/* * 3. +
+			float shadow =  getShadow(index, pos.xyz, vec3(0))/* * 3. +
 							getShadow(index, pos.xyz,   vds                    ) * 2. +
 							getShadow(index, pos.xyz, - vds                    ) * 2. +
 							getShadow(index, pos.xyz,             - vds2       ) * 2. +
@@ -92,7 +94,7 @@ void calcLight(in int index, in vec3 n, in vec3 v, in vec4 v2) {
 void main(void) {
 	//if (d == 1.) discard;
 	ivec2 tc = ivec2(gl_FragCoord.xy);
-	vec4 v0 = texture2D(t0, qgl_FragTexture.xy);
+	vec4 v0 = texelFetch(t0, tc, 0);
 	if (v0.w == 0.) {
 		qgl_FragData[0] = back_color;
 		return;
@@ -109,10 +111,15 @@ void main(void) {
 	li = qgl_AmbientLight.color.rgb * qgl_AmbientLight.intensity;
 	si = vec3(0.);
 
-	float posz = z_near * z_far / (texelFetch(td, tc, 0).r * (z_far - z_near) - z_far);
+	/*float posz = z_near * z_far / (texelFetch(td, tc, 0).r * (z_far - z_near) - z_far);
 	pos = vec4(sp, 0., 1) * mat_proji;
-	pos.xy *= v0.w;
-	pos.z = posz;
+	pos.xy *= v0.z;
+	pos.z = posz;*/
+
+	pos.xyz = view_dir * v0.w;
+	pos.z = -pos.z;
+
+	//pos.z = posz;
 	//pos.xyz += n * height;
 	//pos.xyz = v3.xyz;
 	//pos = v3;
@@ -130,10 +137,11 @@ void main(void) {
 		calcLight(0, n, v, v2);
 
 	qgl_FragData[0].rgb = li * dc + si * v2.rgb + v3.rgb + texelFetch(t_pp, tc, 0).rgb;
-	//qgl_FragData[0].rgb = vec3(abs(lpos.xyz - pos.xyz)/10);
+	qgl_FragData[0].rgb = vec3(abs(shp.xy/shp.w)/1,0);
 	//qgl_FragData[0].rgb = li + vec3(texelFetch(t_pp, tc, 0).xyz);
 	//shd = shd - shp.w;
-	vec3 fp = pos.xyz * lpos.w;
+
+	/*vec3 fp = pos.xyz;// * lpos.w;
 	vec3 _dlp = fp - qgl_Light[0].position.xyz;
 	vec3 _ld = qgl_Light[0].direction.xyz;
 	float lz = dot(_ld, _dlp);
@@ -143,7 +151,10 @@ void main(void) {
 	float lx = dot(qgl_Light[0].shadowDir1.xyz, normalize(_dlp));
 	vec3 dd = mat3(mat_viewi)*(normalize(_dlp) - _ld);
 	//qgl_FragData[0].rgb = vec3(abs(shp.xy/shp.w)/1,0);
-	qgl_FragData[0].rgb = vec3(lx*qgl_Light[0].endAngleCos/1);
+	float Y = dot(_dlp, qgl_Light[0].shadowDir0.xyz) / length(qgl_Light[0].shadowDir0.xyz);
+	float X = dot(_dlp, qgl_Light[0].shadowDir1.xyz) / length(qgl_Light[0].shadowDir1.xyz);
+	qgl_FragData[0].rgb = vec3(abs((mat3(mat_viewi)*_dlp).x)/100);*/
+
 	//qgl_FragData[0].rgb = vec3(abs(mat3(mat_viewi)* qgl_Light[0].direction.xyz));
 	//qgl_FragData[0].rgb = vec3(texture(qgl_Light[0].shadow,shp.xyz/shp.w)/2);
 	//qgl_FragData[0].a = 0.;
diff --git a/qglview/shaders/dsl_pass_1.vert b/qglview/shaders/dsl_pass_1.vert
index e06345c..30d914a 100644
--- a/qglview/shaders/dsl_pass_1.vert
+++ b/qglview/shaders/dsl_pass_1.vert
@@ -1,11 +1,11 @@
 #version 150
 
-in vec4 view_corner;
-out vec4 view_dir;
+in vec3 view_corner;
+out vec3 view_dir;
 out vec4 view_pos;
 
 void main(void) {
-	view_dir = view_corner;
+	view_dir = view_corner / view_corner.z;
 	view_pos = vec4(qgl_ModelViewMatrix * vec4(qgl_Vertex.xy, 1, 1));
 	view_pos /= view_pos.w;
 	qgl_FragTexture = qgl_Texture;
diff --git a/qglview/shaders/selection.frag b/qglview/shaders/selection.frag
index 43ccb95..dff03a8 100644
--- a/qglview/shaders/selection.frag
+++ b/qglview/shaders/selection.frag
@@ -1,7 +1,10 @@
 #version 150
 
+in float logz;
+
 uniform vec4 id;
 
 void main(void) {
+	gl_FragDepth = logz;
 	qgl_FragData[0] = id;
 }
diff --git a/qglview/shaders/selection.vert b/qglview/shaders/selection.vert
index 3c87db4..f7c51ff 100644
--- a/qglview/shaders/selection.vert
+++ b/qglview/shaders/selection.vert
@@ -1,5 +1,14 @@
 #version 150
 
+out float logz;
+
+uniform float z_near, z_far;
+
+const float C = 0.0001;
+float FC = 1. / log(z_far * C + 1.);
+
 void main(void) {
-	gl_Position = qgl_ftransform();
+	vec4 pos = qgl_ftransform();
+	logz = log(pos.w * C + 1.) * FC;
+	gl_Position = pos;
 }