void DeferredContainer::draw() const {
//"The Screen". It may not be actually the screen since a upper container might be postprocessing
const RenderTargetBase* screen = RenderTargetBase::getCurrent();
GL_ASSERT(glEnable(GL_DEPTH_TEST));
GL_ASSERT(glDisable(GL_BLEND));
//Deferred pass
Debugger::pushMark("Deferred Pass", "Time spent rendering geometry to the g-buffer");
drawMode = Deferred;
RenderTargetBase::bind(gBuffer);
GL_ASSERT(glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT));
ContainerObject::draw();
Debugger::popMark(); //deferred
//Shadowmap pass
Debugger::pushMark("Shadowmap Pass", "Time spent rendering geometry to the layered shadowmap");
glEnable(GL_DEPTH_CLAMP);
drawMode = ShadowMap;
RenderTargetBase::bind(sunTarget);
GL_ASSERT(glClear(GL_DEPTH_BUFFER_BIT));
ContainerObject::draw();
glDisable(GL_DEPTH_CLAMP);
Debugger::popMark(); //shadow
//Transparent shadowmap pass
Debugger::pushMark("Transparent ShadowMap Pass", "Time spent rendering transparent geometry to the layered shadowmap");
glEnable(GL_DEPTH_CLAMP);
drawMode = TransShadowMap;
RenderTargetBase::bind(sunTargetTrans);
GL_ASSERT(glClear(GL_DEPTH_BUFFER_BIT));
ContainerObject::draw();
glDisable(GL_DEPTH_CLAMP);
Debugger::popMark(); //transparent shadow
Debugger::pushMark("Light Pass", "Time spent rendering deferred lights");
//bind output texture (screen)
RenderTargetBase::bind(screen);
GL_ASSERT(glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT));
//Light pass
GL_ASSERT(glEnable(GL_BLEND));
GL_ASSERT(glBlendFunc(GL_ONE, GL_ONE)); //additive
GL_ASSERT(glDepthMask(GL_FALSE));
GL_ASSERT(glDepthFunc(GL_ALWAYS));
drawMode = Light;
ContainerObject::draw();
Debugger::popMark(); //lights
//Ambient+Visibility pass
Debugger::pushMark("Ambient+Visibility Pass", "Time spent rendering ambient light and sunlight contribution to the scene");
GL_ASSERT(glDepthMask(GL_TRUE));
const Camera* cam = (Camera*)getGame()->getObjectByName("playerCam");
Sun* sun = (Sun*)getGame()->getObjectByName("sun");
glm::mat4 biasMatrix( //gets coords from [-1..1] to [0..1]
0.5, 0.0, 0.0, 0.0,
0.0, 0.5, 0.0, 0.0,
0.0, 0.0, 0.5, 0.0,
0.5, 0.5, 0.5, 1.0
);
//compute each of the cascaded cameras's matrices
std::vector<mat4f> depthMVP(NUM_SUN_CASCADES);
for(int i = 0; i < NUM_SUN_CASCADES; ++i)
depthMVP[i] = biasMatrix*(sun->getVPMatrices()[i]*fullTransform);
Programs.get("ambientPass").uniform("MVP")->set(mat4f(1.0f));
Programs.get("ambientPass").uniform("camMV")->set(cam->getView()*fullTransform);
Programs.get("ambientPass").uniform("color0")->set(getColor0());
Programs.get("ambientPass").uniform("color1")->set(getColor1());
Programs.get("ambientPass").uniform("invResolution")->set(vec2f(1.0f/screen->getSize().x, 1.0f/screen->getSize().y));
Programs.get("ambientPass").uniform("invCamProj")->set(glm::inverse(cam->projection));
Programs.get("ambientPass").uniform("invCamView")->set(glm::inverse(cam->getView()));
Programs.get("ambientPass").uniform("lightDir")->set(sun->getCam(0)->getForward());
Programs.get("ambientPass").uniform("worldsize")->set(WORLDSIZE);
Programs.get("ambientPass").uniform("depthMVP")->set(depthMVP);
Programs.get("ambientPass").uniform("depthPlanes")->set(sun->getDepthPlanes());
Programs.get("ambientPass").uniform("depth")->set(gBuffer.getTexture(RenderTargetBase::DEPTH));
Programs.get("ambientPass").uniform("sunDepth")->set(sunTarget.getTexture(RenderTargetBase::DEPTH));
Programs.get("ambientPass").uniform("sunDepthTrans")->set(sunTargetTrans.getTexture(RenderTargetBase::DEPTH));
quad->draw(Programs.get("ambientPass"));
Debugger::popMark(); //ambient+shadowmap
//Forward pass
Debugger::pushMark("Forward Pass", "Time spent rendering forward-render stuff");
GL_ASSERT(glDepthMask(GL_TRUE));
GL_ASSERT(glDepthFunc(GL_LEQUAL));
GL_ASSERT(glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA)); //forward rendering blending
drawMode = Forward;
ContainerObject::draw();
Debugger::popMark();
}
void MultiColoredQuadUIDrawObject::draw(Graphics* const Graphics, Real32 Opacity) const
{
Graphics->drawQuad(getPoint1(),getPoint2(),getPoint3(),getPoint4(),
getColor1(), getColor2(), getColor3(), getColor4(),
getOpacity()*Opacity);
}
