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Reorganize code

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This commit is contained in:
Wojtek Figat
2025-03-08 20:25:03 +01:00
parent 4c9d51f0ef
commit 5e8f9e357a
3 changed files with 90 additions and 125 deletions
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BIN
Content/Shaders/PostProcessing.flax (Stored with Git LFS)
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111
Source/Engine/Renderer/PostProcessingPass.cpp
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@@ -9,19 +9,61 @@
#include "Engine/Graphics/RenderTargetPool.h"
#include "Engine/Engine/Time.h"
PostProcessingPass::PostProcessingPass()
: _shader(nullptr)
, _psBloomBrightPass(nullptr)
, _psBloomDownsample(nullptr)
, _psBloomDualFilterUpsample(nullptr)
, _psBlurH(nullptr)
, _psBlurV(nullptr)
, _psGenGhosts(nullptr)
, _defaultLensColor(nullptr)
, _defaultLensStar(nullptr)
, _defaultLensDirt(nullptr)
{
}
#define GB_RADIUS 6
#define GB_KERNEL_SIZE (GB_RADIUS * 2 + 1)
GPU_CB_STRUCT(Data{
float BloomIntensity; // Overall bloom strength multiplier
float BloomClamp; // Maximum brightness limit for bloom
float BloomThreshold; // Luminance threshold where bloom begins
float BloomThresholdKnee; // Controls the threshold rolloff curve
float BloomBaseMix; // Base mip contribution
float BloomHighMix; // High mip contribution
float BloomMipCount;
float BloomLayer;
Float3 VignetteColor;
float VignetteShapeFactor;
Float2 InputSize;
float InputAspect;
float GrainAmount;
float GrainTime;
float GrainParticleSize;
int32 Ghosts;
float HaloWidth;
float HaloIntensity;
float Distortion;
float GhostDispersal;
float LensFlareIntensity;
Float2 LensInputDistortion;
float LensScale;
float LensBias;
Float2 InvInputSize;
float ChromaticDistortion;
float Time;
float Dummy1;
float PostExposure;
float VignetteIntensity;
float LensDirtIntensity;
Color ScreenFadeColor;
Matrix LensFlareStarMat;
});
GPU_CB_STRUCT(GaussianBlurData{
Float2 Size;
float Dummy3;
float Dummy4;
Float4 GaussianBlurCache[GB_KERNEL_SIZE]; // x-weight, y-offset
});
String PostProcessingPass::ToString() const
{
@@ -116,7 +158,7 @@ bool PostProcessingPass::setupResources()
return false;
}
GPUTexture* PostProcessingPass::getCustomOrDefault(Texture* customTexture, AssetReference<Texture>& defaultTexture, const Char* defaultName)
GPUTexture* GetCustomOrDefault(Texture* customTexture, AssetReference<Texture>& defaultTexture, const Char* defaultName)
{
// Check if use custom texture
if (customTexture)
@@ -133,7 +175,15 @@ GPUTexture* PostProcessingPass::getCustomOrDefault(Texture* customTexture, Asset
return defaultTexture ? defaultTexture->GetTexture() : nullptr;
}
void PostProcessingPass::GB_ComputeKernel(float sigma, float width, float height)
/// <summary>
/// Calculates the Gaussian blur filter kernel. This implementation is
/// ported from the original Java code appearing in chapter 16 of
/// "Filthy Rich Clients: Developing Animated and Graphical Effects for Desktop Java".
/// </summary>
/// <param name="sigma">Gaussian Blur sigma parameter</param>
/// <param name="width">Texture to blur width in pixels</param>
/// <param name="height">Texture to blur height in pixels</param>
void GB_ComputeKernel(float sigma, float width, float height, Float4 gaussianBlurCacheH[GB_KERNEL_SIZE], Float4 gaussianBlurCacheV[GB_KERNEL_SIZE])
{
float total = 0.0f;
float twoSigmaSquare = 2.0f * sigma * sigma;
@@ -154,19 +204,16 @@ void PostProcessingPass::GB_ComputeKernel(float sigma, float width, float height
// Calculate total weights sum
total += weight;
GaussianBlurCacheH[index] = Float4(weight, i * xOffset, 0, 0);
GaussianBlurCacheV[index] = Float4(weight, i * yOffset, 0, 0);
gaussianBlurCacheH[index] = Float4(weight, i * xOffset, 0, 0);
gaussianBlurCacheV[index] = Float4(weight, i * yOffset, 0, 0);
}
// Normalize weights
for (int32 i = 0; i < GB_KERNEL_SIZE; i++)
{
GaussianBlurCacheH[i].X /= total;
GaussianBlurCacheV[i].X /= total;
gaussianBlurCacheH[i].X /= total;
gaussianBlurCacheV[i].X /= total;
}
// Assign size
_gbData.Size = Float2(width, height);
}
void PostProcessingPass::Dispose()
@@ -405,8 +452,8 @@ void PostProcessingPass::Render(RenderContext& renderContext, GPUTexture* input,
if (useLensFlares)
{
// Prepare lens flares helper textures
context->BindSR(5, getCustomOrDefault(settings.LensFlares.LensStar, _defaultLensStar, TEXT("Engine/Textures/DefaultLensStarburst")));
context->BindSR(6, getCustomOrDefault(settings.LensFlares.LensColor, _defaultLensColor, TEXT("Engine/Textures/DefaultLensColor")));
context->BindSR(5, GetCustomOrDefault(settings.LensFlares.LensStar, _defaultLensStar, TEXT("Engine/Textures/DefaultLensStarburst")));
context->BindSR(6, GetCustomOrDefault(settings.LensFlares.LensColor, _defaultLensColor, TEXT("Engine/Textures/DefaultLensColor")));
// Render lens flares
context->SetRenderTarget(bloomBuffer2->View(0, 1));
@@ -418,11 +465,15 @@ void PostProcessingPass::Render(RenderContext& renderContext, GPUTexture* input,
context->UnBindSR(3);
// Gaussian blur kernel
GB_ComputeKernel(2.0f, static_cast<float>(w4), static_cast<float>(h4));
GaussianBlurData gbData;
Float4 GaussianBlurCacheH[GB_KERNEL_SIZE];
Float4 GaussianBlurCacheV[GB_KERNEL_SIZE];
gbData.Size = Float2(static_cast<float>(w4), static_cast<float>(h4));
GB_ComputeKernel(2.0f, gbData.Size.X, gbData.Size.Y, GaussianBlurCacheH, GaussianBlurCacheV);
// Gaussian blur H
Platform::MemoryCopy(_gbData.GaussianBlurCache, GaussianBlurCacheH, sizeof(GaussianBlurCacheH));
context->UpdateCB(cb1, &_gbData);
Platform::MemoryCopy(gbData.GaussianBlurCache, GaussianBlurCacheH, sizeof(GaussianBlurCacheH));
context->UpdateCB(cb1, &gbData);
context->BindCB(1, cb1);
context->SetRenderTarget(bloomBuffer1->View(0, 1));
context->BindSR(0, bloomBuffer2->View(0, 1));
@@ -431,8 +482,8 @@ void PostProcessingPass::Render(RenderContext& renderContext, GPUTexture* input,
context->ResetRenderTarget();
// Gaussian blur V
Platform::MemoryCopy(_gbData.GaussianBlurCache, GaussianBlurCacheV, sizeof(GaussianBlurCacheV));
context->UpdateCB(cb1, &_gbData);
Platform::MemoryCopy(gbData.GaussianBlurCache, GaussianBlurCacheV, sizeof(GaussianBlurCacheV));
context->UpdateCB(cb1, &gbData);
context->BindCB(1, cb1);
context->SetRenderTarget(bloomBuffer2->View(0, 1));
context->BindSR(0, bloomBuffer1->View(0, 1));
@@ -481,7 +532,7 @@ void PostProcessingPass::Render(RenderContext& renderContext, GPUTexture* input,
// - 5 - LensStar - lens star texture
// - 7 - ColorGradingLUT
context->BindSR(0, input->View());
context->BindSR(4, getCustomOrDefault(settings.LensFlares.LensDirt, _defaultLensDirt, TEXT("Engine/Textures/DefaultLensDirt")));
context->BindSR(4, GetCustomOrDefault(settings.LensFlares.LensDirt, _defaultLensDirt, TEXT("Engine/Textures/DefaultLensDirt")));
context->BindSR(7, colorGradingLutView);
// Composite final frame during single pass (done in full resolution)

100
Source/Engine/Renderer/PostProcessingPass.h
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@@ -5,96 +5,25 @@
#include "RendererPass.h"
#include "Engine/Graphics/GPUPipelineStatePermutations.h"
#define GB_RADIUS 6
#define GB_KERNEL_SIZE (GB_RADIUS * 2 + 1)
/// <summary>
/// Post processing rendering service
/// Post-processing rendering service.
/// </summary>
class PostProcessingPass : public RendererPass<PostProcessingPass>
{
private:
GPU_CB_STRUCT(Data{
float BloomIntensity; // Overall bloom strength multiplier
float BloomClamp; // Maximum brightness limit for bloom
float BloomThreshold; // Luminance threshold where bloom begins
float BloomThresholdKnee; // Controls the threshold rolloff curve
float BloomBaseMix; // Base mip contribution
float BloomHighMix; // High mip contribution
float BloomMipCount;
float BloomLayer;
Float3 VignetteColor;
float VignetteShapeFactor;
Float2 InputSize;
float InputAspect;
float GrainAmount;
float GrainTime;
float GrainParticleSize;
int32 Ghosts;
float HaloWidth;
float HaloIntensity;
float Distortion;
float GhostDispersal;
float LensFlareIntensity;
Float2 LensInputDistortion;
float LensScale;
float LensBias;
Float2 InvInputSize;
float ChromaticDistortion;
float Time;
float Dummy1;
float PostExposure;
float VignetteIntensity;
float LensDirtIntensity;
Color ScreenFadeColor;
Matrix LensFlareStarMat;
});
GPU_CB_STRUCT(GaussianBlurData{
Float2 Size;
float Dummy3;
float Dummy4;
Float4 GaussianBlurCache[GB_KERNEL_SIZE]; // x-weight, y-offset
});
// Post Processing
AssetReference<Shader> _shader;
GPUPipelineState* _psBloomBrightPass;
GPUPipelineState* _psBloomDownsample;
GPUPipelineState* _psBloomDualFilterUpsample;
GPUPipelineState* _psBlurH;
GPUPipelineState* _psBlurV;
GPUPipelineState* _psGenGhosts;
GPUPipelineState* _psBloomBrightPass = nullptr;
GPUPipelineState* _psBloomDownsample = nullptr;
GPUPipelineState* _psBloomDualFilterUpsample = nullptr;
GPUPipelineState* _psBlurH = nullptr;
GPUPipelineState* _psBlurV = nullptr;
GPUPipelineState* _psGenGhosts = nullptr;
GPUPipelineStatePermutationsPs<3> _psComposite;
GaussianBlurData _gbData;
Float4 GaussianBlurCacheH[GB_KERNEL_SIZE];
Float4 GaussianBlurCacheV[GB_KERNEL_SIZE];
AssetReference<Texture> _defaultLensColor;
AssetReference<Texture> _defaultLensStar;
AssetReference<Texture> _defaultLensDirt;
public:
/// <summary>
/// Init
/// </summary>
PostProcessingPass();
public:
/// <summary>
/// Perform postFx rendering for the input task
/// </summary>
@@ -105,19 +34,6 @@ public:
void Render(RenderContext& renderContext, GPUTexture* input, GPUTexture* output, GPUTexture* colorGradingLUT);
private:
GPUTexture* getCustomOrDefault(Texture* customTexture, AssetReference<Texture>& defaultTexture, const Char* defaultName);
/// <summary>
/// Calculates the Gaussian blur filter kernel. This implementation is
/// ported from the original Java code appearing in chapter 16 of
/// "Filthy Rich Clients: Developing Animated and Graphical Effects for Desktop Java".
/// </summary>
/// <param name="sigma">Gaussian Blur sigma parameter</param>
/// <param name="width">Texture to blur width in pixels</param>
/// <param name="height">Texture to blur height in pixels</param>
void GB_ComputeKernel(float sigma, float width, float height);
#if COMPILE_WITH_DEV_ENV
void OnShaderReloading(Asset* obj)
{
@@ -133,14 +49,12 @@ private:
#endif
public:
// [RendererPass]
String ToString() const override;
bool Init() override;
void Dispose() override;
protected:
// [RendererPass]
bool setupResources() override;
};