- reduce the number of direct OpenGL calls done by the post processing steps
This commit is contained in:
Magnus Norddahl
parent
ba9a340c1f
commit
46e2e0b57c
5 changed files with 282 additions and 290 deletions
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@ -195,15 +195,10 @@ void FGLRenderer::AmbientOccludeScene()
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int randomTexture = clamp(gl_ssao - 1, 0, FGLRenderBuffers::NumAmbientRandomTextures - 1);
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// Calculate linear depth values
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glBindFramebuffer(GL_FRAMEBUFFER, mBuffers->LinearDepthFB);
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mBuffers->LinearDepthFB.Bind();
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glViewport(0, 0, mBuffers->AmbientWidth, mBuffers->AmbientHeight);
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mBuffers->BindSceneDepthTexture(0);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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mBuffers->BindSceneColorTexture(1);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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glActiveTexture(GL_TEXTURE0);
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mLinearDepthShader->Bind();
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mLinearDepthShader->DepthTexture.Set(0);
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mLinearDepthShader->ColorTexture.Set(1);
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@ -217,20 +212,10 @@ void FGLRenderer::AmbientOccludeScene()
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RenderScreenQuad();
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// Apply ambient occlusion
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glBindFramebuffer(GL_FRAMEBUFFER, mBuffers->AmbientFB1);
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glBindTexture(GL_TEXTURE_2D, mBuffers->LinearDepthTexture);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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glActiveTexture(GL_TEXTURE1);
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glBindTexture(GL_TEXTURE_2D, mBuffers->AmbientRandomTexture[randomTexture]);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
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mBuffers->AmbientFB1.Bind();
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mBuffers->LinearDepthTexture.Bind(0);
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mBuffers->AmbientRandomTexture[randomTexture].Bind(1, GL_NEAREST, GL_REPEAT);
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mBuffers->BindSceneNormalTexture(2);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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glActiveTexture(GL_TEXTURE0);
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mSSAOShader->Bind();
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mSSAOShader->DepthTexture.Set(0);
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mSSAOShader->RandomTexture.Set(1);
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@ -251,17 +236,15 @@ void FGLRenderer::AmbientOccludeScene()
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// Blur SSAO texture
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if (gl_ssao_debug < 2)
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{
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glBindFramebuffer(GL_FRAMEBUFFER, mBuffers->AmbientFB0);
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glBindTexture(GL_TEXTURE_2D, mBuffers->AmbientTexture1);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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mBuffers->AmbientFB0.Bind();
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mBuffers->AmbientTexture1.Bind(0);
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mDepthBlurShader->Bind(false);
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mDepthBlurShader->BlurSharpness[false].Set(blurSharpness);
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mDepthBlurShader->InvFullResolution[false].Set(1.0f / mBuffers->AmbientWidth, 1.0f / mBuffers->AmbientHeight);
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RenderScreenQuad();
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glBindFramebuffer(GL_FRAMEBUFFER, mBuffers->AmbientFB1);
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glBindTexture(GL_TEXTURE_2D, mBuffers->AmbientTexture0);
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mBuffers->AmbientFB1.Bind();
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mBuffers->AmbientTexture0.Bind(0);
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mDepthBlurShader->Bind(true);
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mDepthBlurShader->BlurSharpness[true].Set(blurSharpness);
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mDepthBlurShader->InvFullResolution[true].Set(1.0f / mBuffers->AmbientWidth, 1.0f / mBuffers->AmbientHeight);
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@ -280,10 +263,7 @@ void FGLRenderer::AmbientOccludeScene()
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glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
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glClear(GL_COLOR_BUFFER_BIT);
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}
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glActiveTexture(GL_TEXTURE0);
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glBindTexture(GL_TEXTURE_2D, mBuffers->AmbientTexture1);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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mBuffers->AmbientTexture1.Bind(0, GL_LINEAR);
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mBuffers->BindSceneFogTexture(1);
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mSSAOCombineShader->Bind();
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mSSAOCombineShader->AODepthTexture.Set(0);
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@ -313,36 +293,32 @@ void FGLRenderer::UpdateCameraExposure()
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savedState.SaveTextureBindings(2);
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// Extract light level from scene texture:
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const auto &level0 = mBuffers->ExposureLevels[0];
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glBindFramebuffer(GL_FRAMEBUFFER, level0.Framebuffer);
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auto &level0 = mBuffers->ExposureLevels[0];
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level0.Framebuffer.Bind();
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glViewport(0, 0, level0.Width, level0.Height);
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mBuffers->BindCurrentTexture(0);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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mBuffers->BindCurrentTexture(0, GL_LINEAR);
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mExposureExtractShader->Bind();
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mExposureExtractShader->SceneTexture.Set(0);
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mExposureExtractShader->Scale.Set(mSceneViewport.width / (float)mScreenViewport.width, mSceneViewport.height / (float)mScreenViewport.height);
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mExposureExtractShader->Offset.Set(mSceneViewport.left / (float)mScreenViewport.width, mSceneViewport.top / (float)mScreenViewport.height);
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RenderScreenQuad();
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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// Find the average value:
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for (unsigned int i = 0; i + 1 < mBuffers->ExposureLevels.Size(); i++)
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{
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const auto &level = mBuffers->ExposureLevels[i];
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const auto &next = mBuffers->ExposureLevels[i + 1];
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auto &level = mBuffers->ExposureLevels[i];
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auto &next = mBuffers->ExposureLevels[i + 1];
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glBindFramebuffer(GL_FRAMEBUFFER, next.Framebuffer);
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next.Framebuffer.Bind();
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glViewport(0, 0, next.Width, next.Height);
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glBindTexture(GL_TEXTURE_2D, level.Texture);
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level.Texture.Bind(0);
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mExposureAverageShader->Bind();
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mExposureAverageShader->ExposureTexture.Set(0);
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RenderScreenQuad();
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}
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// Combine average value with current camera exposure:
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glBindFramebuffer(GL_FRAMEBUFFER, mBuffers->ExposureFB);
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mBuffers->ExposureFB.Bind();
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glViewport(0, 0, 1, 1);
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if (!mBuffers->FirstExposureFrame)
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{
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@ -354,8 +330,7 @@ void FGLRenderer::UpdateCameraExposure()
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{
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mBuffers->FirstExposureFrame = false;
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}
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glActiveTexture(GL_TEXTURE0);
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glBindTexture(GL_TEXTURE_2D, mBuffers->ExposureLevels.Last().Texture);
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mBuffers->ExposureLevels.Last().Texture.Bind(0);
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mExposureCombineShader->Bind();
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mExposureCombineShader->ExposureTexture.Set(0);
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mExposureCombineShader->ExposureBase.Set(gl_exposure_base);
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@ -388,31 +363,25 @@ void FGLRenderer::BloomScene(int fixedcm)
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const float blurAmount = gl_bloom_amount;
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int sampleCount = gl_bloom_kernel_size;
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const auto &level0 = mBuffers->BloomLevels[0];
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auto &level0 = mBuffers->BloomLevels[0];
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// Extract blooming pixels from scene texture:
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glBindFramebuffer(GL_FRAMEBUFFER, level0.VFramebuffer);
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level0.VFramebuffer.Bind();
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glViewport(0, 0, level0.Width, level0.Height);
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mBuffers->BindCurrentTexture(0);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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glActiveTexture(GL_TEXTURE1);
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glBindTexture(GL_TEXTURE_2D, mBuffers->ExposureTexture);
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glActiveTexture(GL_TEXTURE0);
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mBuffers->BindCurrentTexture(0, GL_LINEAR);
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mBuffers->ExposureTexture.Bind(1);
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mBloomExtractShader->Bind();
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mBloomExtractShader->SceneTexture.Set(0);
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mBloomExtractShader->ExposureTexture.Set(1);
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mBloomExtractShader->Scale.Set(mSceneViewport.width / (float)mScreenViewport.width, mSceneViewport.height / (float)mScreenViewport.height);
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mBloomExtractShader->Offset.Set(mSceneViewport.left / (float)mScreenViewport.width, mSceneViewport.top / (float)mScreenViewport.height);
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RenderScreenQuad();
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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// Blur and downscale:
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for (int i = 0; i < FGLRenderBuffers::NumBloomLevels - 1; i++)
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{
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const auto &level = mBuffers->BloomLevels[i];
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const auto &next = mBuffers->BloomLevels[i + 1];
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auto &level = mBuffers->BloomLevels[i];
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auto &next = mBuffers->BloomLevels[i + 1];
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mBlurShader->BlurHorizontal(this, blurAmount, sampleCount, level.VTexture, level.HFramebuffer, level.Width, level.Height);
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mBlurShader->BlurVertical(this, blurAmount, sampleCount, level.HTexture, next.VFramebuffer, next.Width, next.Height);
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}
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@ -420,19 +389,16 @@ void FGLRenderer::BloomScene(int fixedcm)
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// Blur and upscale:
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for (int i = FGLRenderBuffers::NumBloomLevels - 1; i > 0; i--)
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{
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const auto &level = mBuffers->BloomLevels[i];
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const auto &next = mBuffers->BloomLevels[i - 1];
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auto &level = mBuffers->BloomLevels[i];
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auto &next = mBuffers->BloomLevels[i - 1];
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mBlurShader->BlurHorizontal(this, blurAmount, sampleCount, level.VTexture, level.HFramebuffer, level.Width, level.Height);
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mBlurShader->BlurVertical(this, blurAmount, sampleCount, level.HTexture, level.VFramebuffer, level.Width, level.Height);
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// Linear upscale:
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glBindFramebuffer(GL_FRAMEBUFFER, next.VFramebuffer);
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next.VFramebuffer.Bind();
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glViewport(0, 0, next.Width, next.Height);
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glActiveTexture(GL_TEXTURE0);
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glBindTexture(GL_TEXTURE_2D, level.VTexture);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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level.VTexture.Bind(0, GL_LINEAR);
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mBloomCombineShader->Bind();
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mBloomCombineShader->BloomTexture.Set(0);
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RenderScreenQuad();
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@ -447,10 +413,7 @@ void FGLRenderer::BloomScene(int fixedcm)
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glEnable(GL_BLEND);
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glBlendEquation(GL_FUNC_ADD);
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glBlendFunc(GL_ONE, GL_ONE);
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glActiveTexture(GL_TEXTURE0);
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glBindTexture(GL_TEXTURE_2D, level0.VTexture);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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level0.VTexture.Bind(0, GL_LINEAR);
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mBloomCombineShader->Bind();
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mBloomCombineShader->BloomTexture.Set(0);
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RenderScreenQuad();
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@ -492,15 +455,13 @@ void FGLRenderer::BlurScene(float gameinfobluramount)
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const auto &level0 = mBuffers->BloomLevels[0];
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// Grab the area we want to bloom:
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glBindFramebuffer(GL_READ_FRAMEBUFFER, mBuffers->GetCurrentFB());
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glBindFramebuffer(GL_DRAW_FRAMEBUFFER, level0.VFramebuffer);
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glBlitFramebuffer(viewport.left, viewport.top, viewport.width, viewport.height, 0, 0, level0.Width, level0.Height, GL_COLOR_BUFFER_BIT, GL_LINEAR);
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mBuffers->BlitLinear(mBuffers->GetCurrentFB(), level0.VFramebuffer, viewport.left, viewport.top, viewport.width, viewport.height, 0, 0, level0.Width, level0.Height);
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// Blur and downscale:
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for (int i = 0; i < numLevels - 1; i++)
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{
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const auto &level = mBuffers->BloomLevels[i];
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const auto &next = mBuffers->BloomLevels[i + 1];
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auto &level = mBuffers->BloomLevels[i];
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auto &next = mBuffers->BloomLevels[i + 1];
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mBlurShader->BlurHorizontal(this, blurAmount, sampleCount, level.VTexture, level.HFramebuffer, level.Width, level.Height);
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mBlurShader->BlurVertical(this, blurAmount, sampleCount, level.HTexture, next.VFramebuffer, next.Width, next.Height);
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}
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@ -508,19 +469,16 @@ void FGLRenderer::BlurScene(float gameinfobluramount)
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// Blur and upscale:
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for (int i = numLevels - 1; i > 0; i--)
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{
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const auto &level = mBuffers->BloomLevels[i];
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const auto &next = mBuffers->BloomLevels[i - 1];
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auto &level = mBuffers->BloomLevels[i];
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auto &next = mBuffers->BloomLevels[i - 1];
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mBlurShader->BlurHorizontal(this, blurAmount, sampleCount, level.VTexture, level.HFramebuffer, level.Width, level.Height);
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mBlurShader->BlurVertical(this, blurAmount, sampleCount, level.HTexture, level.VFramebuffer, level.Width, level.Height);
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// Linear upscale:
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glBindFramebuffer(GL_FRAMEBUFFER, next.VFramebuffer);
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next.VFramebuffer.Bind();
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glViewport(0, 0, next.Width, next.Height);
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glActiveTexture(GL_TEXTURE0);
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glBindTexture(GL_TEXTURE_2D, level.VTexture);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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level.VTexture.Bind(0, GL_LINEAR);
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mBloomCombineShader->Bind();
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mBloomCombineShader->BloomTexture.Set(0);
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RenderScreenQuad();
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@ -530,9 +488,7 @@ void FGLRenderer::BlurScene(float gameinfobluramount)
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mBlurShader->BlurVertical(this, blurAmount, sampleCount, level0.HTexture, level0.VFramebuffer, level0.Width, level0.Height);
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// Copy blur back to scene texture:
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glBindFramebuffer(GL_READ_FRAMEBUFFER, level0.VFramebuffer);
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glBindFramebuffer(GL_DRAW_FRAMEBUFFER, mBuffers->GetCurrentFB());
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glBlitFramebuffer(0, 0, level0.Width, level0.Height, viewport.left, viewport.top, viewport.width, viewport.height, GL_COLOR_BUFFER_BIT, GL_LINEAR);
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mBuffers->BlitLinear(level0.VFramebuffer, mBuffers->GetCurrentFB(), 0, 0, level0.Width, level0.Height, viewport.left, viewport.top, viewport.width, viewport.height);
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glViewport(mScreenViewport.left, mScreenViewport.top, mScreenViewport.width, mScreenViewport.height);
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@ -576,10 +532,7 @@ void FGLRenderer::TonemapScene()
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}
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else
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{
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glActiveTexture(GL_TEXTURE1);
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glBindTexture(GL_TEXTURE_2D, mBuffers->ExposureTexture);
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glActiveTexture(GL_TEXTURE0);
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mBuffers->ExposureTexture.Bind(1);
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mTonemapShader->ExposureTexture.Set(1);
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}
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@ -699,9 +652,7 @@ void FGLRenderer::LensDistortScene()
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FGLPostProcessState savedState;
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mBuffers->BindNextFB();
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mBuffers->BindCurrentTexture(0);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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mBuffers->BindCurrentTexture(0, GL_LINEAR);
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mLensShader->Bind();
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mLensShader->InputTexture.Set(0);
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mLensShader->AspectRatio.Set(aspect);
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@ -709,8 +660,6 @@ void FGLRenderer::LensDistortScene()
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mLensShader->LensDistortionCoefficient.Set(k);
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mLensShader->CubicDistortionValue.Set(kcube);
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RenderScreenQuad();
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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mBuffers->NextTexture();
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FGLDebug::PopGroup();
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@ -747,15 +696,11 @@ void FGLRenderer::ApplyFXAA()
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mBuffers->NextTexture();
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mBuffers->BindNextFB();
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mBuffers->BindCurrentTexture(0);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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mBuffers->BindCurrentTexture(0, GL_LINEAR);
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mFXAAShader->Bind();
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mFXAAShader->InputTexture.Set(0);
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mFXAAShader->ReciprocalResolution.Set(rpcRes);
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RenderScreenQuad();
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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mBuffers->NextTexture();
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FGLDebug::PopGroup();
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