121 lines
4.6 KiB
C++
121 lines
4.6 KiB
C++
/*
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QGL GLRendererBase
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Ivan Pelipenko peri4ko@yandex.ru
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "glrendererbase.h"
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#include "globject.h"
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#include "qglview.h"
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GLRendererBase::GLRendererBase(QGLView * view_): view(view_) {
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white_image = QImage(1, 1, QImage::Format_ARGB32);
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white_image.fill(0xFFFFFFFF);
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white_image_id = 0;
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violent_image = QImage(1, 1, QImage::Format_ARGB32);
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violent_image.fill(QColor(127, 127, 255));
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violent_image_id = 0;
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}
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void GLRendererBase::setupLight(const Light & l, int inpass_index, int gl_index) {
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QVector3D lp = l.worldPos(), ld;
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GLfloat pos[] = {0.f, 0.f, 0.f, 0.f};
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GLfloat dir[] = {0.f, 0.f, 0.f};
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GLfloat col[] = {0.f, 0.f, 0.f};
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pos[0] = l.light_type == Light::Directional ? -l.direction().x() : lp.x();
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pos[1] = l.light_type == Light::Directional ? -l.direction().y() : lp.y();
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pos[2] = l.light_type == Light::Directional ? -l.direction().z() : lp.z();
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pos[3] = l.light_type == Light::Directional ? 0. : 1.;
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dir[0] = ld.x();
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dir[1] = ld.y();
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dir[2] = ld.z();
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glEnable(gl_index);
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glLightfv(gl_index, GL_DIFFUSE, col);
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glLightfv(gl_index, GL_SPECULAR, col);
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glLightfv(gl_index, GL_POSITION, pos);
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glLightf(gl_index, GL_CONSTANT_ATTENUATION, l.decay_const);
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glLightf(gl_index, GL_LINEAR_ATTENUATION, l.decay_linear);
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glLightf(gl_index, GL_QUADRATIC_ATTENUATION, l.decay_quadratic);
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if (l.light_type == Light::Cone) {
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glLightfv(gl_index, GL_SPOT_DIRECTION, dir);
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glLightf(gl_index, GL_SPOT_CUTOFF, l.angle_end / 2.f);
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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);
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} else {
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glLightf(gl_index, GL_SPOT_CUTOFF, 180.);
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}
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}
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void GLRendererBase::setupAmbientLight(const QColor & a, bool first_pass) {
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GLfloat ambient[] = {0.0f, 0.0f, 0.0f, 1.f};
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if (first_pass) {
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ambient[0] = view->ambientColor().redF();
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ambient[1] = view->ambientColor().greenF();
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ambient[2] = view->ambientColor().blueF();
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}
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glLightModelfv(GL_LIGHT_MODEL_AMBIENT, ambient);
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}
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#define BIND_TEXTURE(ch, map) if (rp.prev_tex[ch] != mat.map.bitmap_id) { \
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rp.prev_tex[ch] = mat.map.bitmap_id; \
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glActiveTexture(GL_TEXTURE0 + ch); glBindTexture(GL_TEXTURE_2D, mat.map.bitmap_id); \
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, view->feature(QGLView::qglAnisotropicLevel).toInt());}
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void GLRendererBase::setupTextures(ObjectBase & o, GLRendererBase::RenderingParameters & rp, bool first_object) {
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}
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#undef BIND_TEXTURE
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void GLRendererBase::applyFilteringParameters() {
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, view->feature(QGLView::qglAnisotropicLevel).toInt());
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}
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GLRendererBase::RenderingParameters::RenderingParameters() {
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}
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void GLRendererBase::RenderingParameters::prepare() {
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viewproj_matrix = proj_matrix * view_matrix;
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normal_matrix = view_matrix.normalMatrix();
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proj_matrix_i = proj_matrix.inverted();
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view_matrix_i = view_matrix.inverted();
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viewproj_matrix_i = viewproj_matrix.inverted();
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}
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void GLRendererBase::RenderingParameters::setUniform(QOpenGLShaderProgram * prog) {
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if (!prog) return;
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prog->setUniformValue("qgl_ModelViewMatrix", view_matrix);
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prog->setUniformValue("qgl_ProjectionMatrix", proj_matrix);
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prog->setUniformValue("qgl_ModelViewProjectionMatrix", viewproj_matrix);
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prog->setUniformValue("qgl_NormalMatrix", normal_matrix);
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prog->setUniformValue("qgl_ModelViewMatrixInverse", view_matrix_i);
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prog->setUniformValue("qgl_ProjectionMatrixInverse", proj_matrix_i);
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prog->setUniformValue("qgl_ModelViewProjectionMatrixInverse", viewproj_matrix_i);
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prog->setUniformValue("qgl_ModelViewMatrixTranspose", view_matrix.transposed());
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prog->setUniformValue("qgl_ProjectionMatrixTranspose", proj_matrix.transposed());
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prog->setUniformValue("qgl_ModelViewProjectionMatrixTranspose", viewproj_matrix.transposed());
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prog->setUniformValue("qgl_ModelViewMatrixInverseTranspose", view_matrix_i.transposed());
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prog->setUniformValue("qgl_ProjectionMatrixInverseTranspose", proj_matrix_i.transposed());
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prog->setUniformValue("qgl_ModelViewProjectionMatrixInverseTranspose", viewproj_matrix_i.transposed());
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}
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