void LightNode::lightPass(std::stack<QMatrix4x4> &MVStack, SceneGraph *root) {
QOpenGLShaderProgram *shader = Shaders::storeDepthProgram;
Shaders::bind(shader);
glBindFramebuffer(GL_FRAMEBUFFER, shadowFBO());
GLenum DrawBuffers[1] = {GL_COLOR_ATTACHMENT1};
glDrawBuffers(1, DrawBuffers);
glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glViewport(0,0, shadowWidth(), shadowHeight());
MVStack.push(MVStack.top());
MVStack.top() *= lightView();
root->drawGeometry(MVStack
, lightView()
, perspectiveMatrix()
, shader);
MVStack.pop();
//Recreate the mipmaps
glBindTexture(GL_TEXTURE_2D, shadowMoments());
glGenerateMipmap(GL_TEXTURE_2D);
//Release and relax, brah
glBindFramebuffer(GL_FRAMEBUFFER, 0);
Shaders::release(shader);
}
void VolumeModel::bindUniformValues(QOpenGLShaderProgram * program, const Viewport::Viewport * viewport) const {
program->setUniformValue(uniformValues["view"], view(viewport));
program->setUniformValue(uniformValues["model"], model(viewport));
program->setUniformValue(uniformValues["projection"], projection(viewport));
program->setUniformValue(uniformValues["lightView"], lightView(viewport));
program->setUniformValue(uniformValues["scale"], scaleMatrix());
program->setUniformValue(uniformValues["eye"], QVector4D(viewport->eye()));
program->setUniformValue(uniformValues["modelBillboard"], viewport->modelBillboard());
program->setUniformValue(uniformValues["slope"], _slope);
program->setUniformValue(uniformValues["intercept"], _intercept);
program->setUniformValue(uniformValues["windowCenter"], _windowCenter);
program->setUniformValue(uniformValues["windowWidth"], _windowWidth);
program->setUniformValue(uniformValues["huRange"], _huRange);
program->setUniformValue(uniformValues["valueRange"], _valueRange);
}
