void DeferredLightingEffect::copyBack(RenderArgs* args) {
auto textureCache = DependencyManager::get<TextureCache>();
QSize framebufferSize = textureCache->getFrameBufferSize();
auto freeFBO = DependencyManager::get<GlowEffect>()->getFreeFramebuffer();
//freeFBO->release();
glBindFramebuffer(GL_FRAMEBUFFER, 0);
glDisable(GL_CULL_FACE);
// now transfer the lit region to the primary fbo
glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_CONSTANT_ALPHA, GL_ONE);
glColorMask(true, true, true, false);
auto primaryFBO = gpu::GLBackend::getFramebufferID(textureCache->getPrimaryFramebuffer());
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, primaryFBO);
//primaryFBO->bind();
glBindTexture(GL_TEXTURE_2D, gpu::GLBackend::getTextureID(freeFBO->getRenderBuffer(0)));
glEnable(GL_TEXTURE_2D);
glPushMatrix();
glLoadIdentity();
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
int viewport[4];
glGetIntegerv(GL_VIEWPORT, viewport);
const int VIEWPORT_X_INDEX = 0;
const int VIEWPORT_Y_INDEX = 1;
const int VIEWPORT_WIDTH_INDEX = 2;
const int VIEWPORT_HEIGHT_INDEX = 3;
float sMin = viewport[VIEWPORT_X_INDEX] / (float)framebufferSize.width();
float sWidth = viewport[VIEWPORT_WIDTH_INDEX] / (float)framebufferSize.width();
float tMin = viewport[VIEWPORT_Y_INDEX] / (float)framebufferSize.height();
float tHeight = viewport[VIEWPORT_HEIGHT_INDEX] / (float)framebufferSize.height();
renderFullscreenQuad(sMin, sMin + sWidth, tMin, tMin + tHeight);
glBindTexture(GL_TEXTURE_2D, 0);
glDisable(GL_TEXTURE_2D);
glColorMask(true, true, true, true);
glEnable(GL_LIGHTING);
glEnable(GL_COLOR_MATERIAL);
glEnable(GL_DEPTH_TEST);
glDepthMask(true);
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
glPopMatrix();
}
void ToneMappingEffect::render(RenderArgs* args) {
if (!_blitLightBuffer) {
init();
}
auto framebufferCache = DependencyManager::get<FramebufferCache>();
gpu::doInBatch(args->_context, [&](gpu::Batch& batch) {
batch.enableStereo(false);
QSize framebufferSize = framebufferCache->getFrameBufferSize();
auto lightingBuffer = framebufferCache->getLightingTexture();
auto destFbo = framebufferCache->getPrimaryFramebuffer();
batch.setFramebuffer(destFbo);
// FIXME: Generate the Luminosity map
//batch.generateTextureMips(lightingBuffer);
batch.setViewportTransform(args->_viewport);
batch.setProjectionTransform(glm::mat4());
batch.setViewTransform(Transform());
{
float sMin = args->_viewport.x / (float)framebufferSize.width();
float sWidth = args->_viewport.z / (float)framebufferSize.width();
float tMin = args->_viewport.y / (float)framebufferSize.height();
float tHeight = args->_viewport.w / (float)framebufferSize.height();
Transform model;
batch.setPipeline(_blitLightBuffer);
model.setTranslation(glm::vec3(sMin, tMin, 0.0));
model.setScale(glm::vec3(sWidth, tHeight, 1.0));
batch.setModelTransform(model);
}
batch.setUniformBuffer(ToneMappingEffect_ParamsSlot, _parametersBuffer);
batch.setResourceTexture(ToneMappingEffect_LightingMapSlot, lightingBuffer);
batch.draw(gpu::TRIANGLE_STRIP, 4);
});
}
