void Renderer::render()
{
for(auto cameraIter = activeCameras.begin(); cameraIter < activeCameras.end(); cameraIter++){
(*cameraIter)->update();
// Geometry pass
renderGeometryPass( **cameraIter );
// light pass
renderLightPass( **cameraIter );
}
}
void NGLDraw::draw()
{
glBindFramebuffer (GL_FRAMEBUFFER, m_gbuffer);
/*************************************************************************************************/
// Geo Pass
/*************************************************************************************************/
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
GLenum drawBuffers[] = { GL_COLOR_ATTACHMENT0,GL_COLOR_ATTACHMENT1,GL_COLOR_ATTACHMENT2,GL_COLOR_ATTACHMENT3};
glDrawBuffers (4, drawBuffers);
drawScene("Pass1");
/*************************************************************************************************/
// now do the light pass
/*************************************************************************************************/
glBindFramebuffer (GL_FRAMEBUFFER, m_lightBuffer);
GLenum lightBuffers[] = { GL_COLOR_ATTACHMENT0};
glDrawBuffers (1, lightBuffers);
glClear (GL_COLOR_BUFFER_BIT);
// map the texture buffers so light pass can read them
glActiveTexture (GL_TEXTURE0);
glBindTexture (GL_TEXTURE_2D, m_pointTexID);
glActiveTexture (GL_TEXTURE1);
glBindTexture (GL_TEXTURE_2D, m_normalTexID);
glActiveTexture (GL_TEXTURE2);
glBindTexture (GL_TEXTURE_2D, m_colourTexID);
glActiveTexture (GL_TEXTURE3);
glBindTexture (GL_TEXTURE_2D, m_shadingTexID);
glActiveTexture (GL_TEXTURE4);
glBindTexture (GL_TEXTURE_2D, m_lightPassTexID);
glGenerateMipmap(GL_TEXTURE_2D);
glClear(GL_COLOR_BUFFER_BIT);
renderLightPass("Lighting");
glActiveTexture (GL_TEXTURE0);
glBindTexture (GL_TEXTURE_2D, m_pointTexID);
glActiveTexture (GL_TEXTURE1);
glBindTexture (GL_TEXTURE_2D, m_normalTexID);
glActiveTexture (GL_TEXTURE2);
glBindTexture (GL_TEXTURE_2D, m_colourTexID);
glActiveTexture (GL_TEXTURE3);
glBindTexture (GL_TEXTURE_2D, m_shadingTexID);
glActiveTexture (GL_TEXTURE4);
glBindTexture (GL_TEXTURE_2D, m_lightPassTexID);
// now blit
// glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
// glBindFramebuffer(GL_READ_FRAMEBUFFER, m_lightBuffer);
// glReadBuffer(GL_COLOR_ATTACHMENT0+m_debugMode);
// int w=width()*devicePixelRatio();
// int h=height()*devicePixelRatio();
// glBlitFramebuffer(0, 0, w, h, 0, 0, w, h, GL_COLOR_BUFFER_BIT, GL_NEAREST);
if(m_debug==true)
{
glBindFramebuffer (GL_FRAMEBUFFER, 0);
glActiveTexture (GL_TEXTURE0);
glBindTexture (GL_TEXTURE_2D, m_pointTexID);
glActiveTexture (GL_TEXTURE1);
glBindTexture (GL_TEXTURE_2D, m_normalTexID);
glActiveTexture (GL_TEXTURE2);
glBindTexture (GL_TEXTURE_2D, m_colourTexID);
glActiveTexture (GL_TEXTURE3);
glBindTexture (GL_TEXTURE_2D, m_shadingTexID);
glActiveTexture (GL_TEXTURE4);
glBindTexture (GL_TEXTURE_2D, m_lightPassTexID);
glGenerateMipmap(GL_TEXTURE_2D);
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
ngl::ShaderLib *shader = ngl::ShaderLib::instance();
shader->use("Debug");
//shader->setUniform("cam",m_cam->getEye().toVec3());
shader->setShaderParam1i("mode",m_debugMode);
m_screenQuad->draw();
}
// calculate and draw FPS
glBindFramebuffer (GL_FRAMEBUFFER, 0);
++m_frames;
glPolygonMode(GL_FRONT_AND_BACK,GL_FILL);
m_text->setColour(1,1,0);
// QString text=QString("%1 fps using %2 to draw").arg(m_fps).arg(m_debug ? "ScreenQuad" : "glBlitFramebuffer");
// m_text->renderText(10,20,text);
}