bool BlurInOutResource::updateResources(const gpu::FramebufferPointer& sourceFramebuffer, Resources& blurringResources) {
if (!sourceFramebuffer) {
return false;
}
if (!_blurredFramebuffer) {
_blurredFramebuffer = gpu::FramebufferPointer(gpu::Framebuffer::create());
// attach depthStencil if present in source
//if (sourceFramebuffer->hasDepthStencil()) {
// _blurredFramebuffer->setDepthStencilBuffer(sourceFramebuffer->getDepthStencilBuffer(), sourceFramebuffer->getDepthStencilBufferFormat());
//}
auto blurringSampler = gpu::Sampler(gpu::Sampler::FILTER_MIN_MAG_LINEAR_MIP_POINT);
auto blurringTarget = gpu::TexturePointer(gpu::Texture::create2D(sourceFramebuffer->getRenderBuffer(0)->getTexelFormat(), sourceFramebuffer->getWidth(), sourceFramebuffer->getHeight(), blurringSampler));
_blurredFramebuffer->setRenderBuffer(0, blurringTarget);
} else {
// it would be easier to just call resize on the bluredFramebuffer and let it work if needed but the source might loose it's depth buffer when doing so
if ((_blurredFramebuffer->getWidth() != sourceFramebuffer->getWidth()) || (_blurredFramebuffer->getHeight() != sourceFramebuffer->getHeight())) {
_blurredFramebuffer->resize(sourceFramebuffer->getWidth(), sourceFramebuffer->getHeight(), sourceFramebuffer->getNumSamples());
//if (sourceFramebuffer->hasDepthStencil()) {
// _blurredFramebuffer->setDepthStencilBuffer(sourceFramebuffer->getDepthStencilBuffer(), sourceFramebuffer->getDepthStencilBufferFormat());
//}
}
}
blurringResources.sourceTexture = sourceFramebuffer->getRenderBuffer(0);
blurringResources.blurringFramebuffer = _blurredFramebuffer;
blurringResources.blurringTexture = _blurredFramebuffer->getRenderBuffer(0);
if (_generateOutputFramebuffer) {
// The job output the blur result in a new Framebuffer spawning here.
// Let s make sure it s ready for this
if (!_outputFramebuffer) {
_outputFramebuffer = gpu::FramebufferPointer(gpu::Framebuffer::create());
// attach depthStencil if present in source
/* if (sourceFramebuffer->hasDepthStencil()) {
_outputFramebuffer->setDepthStencilBuffer(sourceFramebuffer->getDepthStencilBuffer(), sourceFramebuffer->getDepthStencilBufferFormat());
}*/
auto blurringSampler = gpu::Sampler(gpu::Sampler::FILTER_MIN_MAG_LINEAR_MIP_POINT);
auto blurringTarget = gpu::TexturePointer(gpu::Texture::create2D(sourceFramebuffer->getRenderBuffer(0)->getTexelFormat(), sourceFramebuffer->getWidth(), sourceFramebuffer->getHeight(), blurringSampler));
_outputFramebuffer->setRenderBuffer(0, blurringTarget);
} else {
if ((_outputFramebuffer->getWidth() != sourceFramebuffer->getWidth()) || (_outputFramebuffer->getHeight() != sourceFramebuffer->getHeight())) {
_outputFramebuffer->resize(sourceFramebuffer->getWidth(), sourceFramebuffer->getHeight(), sourceFramebuffer->getNumSamples());
/* if (sourceFramebuffer->hasDepthStencil()) {
_outputFramebuffer->setDepthStencilBuffer(sourceFramebuffer->getDepthStencilBuffer(), sourceFramebuffer->getDepthStencilBufferFormat());
}*/
}
}
// Should be good to use the output Framebuffer as final
blurringResources.finalFramebuffer = _outputFramebuffer;
} else {
// Just the reuse the input as output to blur itself.
blurringResources.finalFramebuffer = sourceFramebuffer;
}
return true;
}
void Antialiasing::run(const render::RenderContextPointer& renderContext, const gpu::FramebufferPointer& sourceBuffer) {
assert(renderContext->args);
assert(renderContext->args->hasViewFrustum());
RenderArgs* args = renderContext->args;
gpu::doInBatch("Antialiasing::run", args->_context, [&](gpu::Batch& batch) {
batch.enableStereo(false);
batch.setViewportTransform(args->_viewport);
// FIXME: NEED to simplify that code to avoid all the GeometryCahce call, this is purely pixel manipulation
float fbWidth = renderContext->args->_viewport.z;
float fbHeight = renderContext->args->_viewport.w;
// float sMin = args->_viewport.x / fbWidth;
// float sWidth = args->_viewport.z / fbWidth;
// float tMin = args->_viewport.y / fbHeight;
// float tHeight = args->_viewport.w / fbHeight;
glm::mat4 projMat;
Transform viewMat;
args->getViewFrustum().evalProjectionMatrix(projMat);
args->getViewFrustum().evalViewTransform(viewMat);
batch.setProjectionTransform(projMat);
batch.setViewTransform(viewMat, true);
batch.setModelTransform(Transform());
// FXAA step
auto pipeline = getAntialiasingPipeline(renderContext->args);
batch.setResourceTexture(0, sourceBuffer->getRenderBuffer(0));
batch.setFramebuffer(_antialiasingBuffer);
batch.setPipeline(pipeline);
// initialize the view-space unpacking uniforms using frustum data
float left, right, bottom, top, nearVal, farVal;
glm::vec4 nearClipPlane, farClipPlane;
args->getViewFrustum().computeOffAxisFrustum(left, right, bottom, top, nearVal, farVal, nearClipPlane, farClipPlane);
// float depthScale = (farVal - nearVal) / farVal;
// float nearScale = -1.0f / nearVal;
// float depthTexCoordScaleS = (right - left) * nearScale / sWidth;
// float depthTexCoordScaleT = (top - bottom) * nearScale / tHeight;
// float depthTexCoordOffsetS = left * nearScale - sMin * depthTexCoordScaleS;
// float depthTexCoordOffsetT = bottom * nearScale - tMin * depthTexCoordScaleT;
batch._glUniform2f(_texcoordOffsetLoc, 1.0f / fbWidth, 1.0f / fbHeight);
glm::vec4 color(0.0f, 0.0f, 0.0f, 1.0f);
glm::vec2 bottomLeft(-1.0f, -1.0f);
glm::vec2 topRight(1.0f, 1.0f);
glm::vec2 texCoordTopLeft(0.0f, 0.0f);
glm::vec2 texCoordBottomRight(1.0f, 1.0f);
DependencyManager::get<GeometryCache>()->renderQuad(batch, bottomLeft, topRight, texCoordTopLeft, texCoordBottomRight, color, _geometryId);
// Blend step
batch.setResourceTexture(0, _antialiasingTexture);
batch.setFramebuffer(sourceBuffer);
batch.setPipeline(getBlendPipeline());
DependencyManager::get<GeometryCache>()->renderQuad(batch, bottomLeft, topRight, texCoordTopLeft, texCoordBottomRight, color, _geometryId);
});
}