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Implement alpha to coverage.

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This commit is contained in:
Skyth
2024-10-24 14:57:23 +03:00
parent 98554eaffa
commit 9b70e1034a
6 changed files with 35 additions and 4 deletions
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UnleashedRecomp/gpu/video.cpp
+30 -2
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@@ -62,13 +62,21 @@ struct PipelineState
RenderFormat renderTargetFormat{};
RenderFormat depthStencilFormat{};
RenderSampleCounts sampleCount = RenderSampleCount::COUNT_1;
bool enableAlphaToCoverage = false;
};
enum class AlphaTestMode : uint32_t
{
Disabled,
AlphaThreshold,
AlphaToCoverage
};
struct SharedConstants
{
uint32_t textureIndices[16]{};
uint32_t samplerIndices[16]{};
uint32_t alphaTestMode{};
AlphaTestMode alphaTestMode{};
float alphaThreshold{};
uint32_t booleans{};
uint32_t swappedTexcoords{};
@@ -348,9 +356,25 @@ static void SetRenderStateZWriteEnable(GuestDevice* device, uint32_t value)
SetDirtyValue(g_dirtyStates.pipelineState, g_pipelineState.zWriteEnable, value != 0);
}
static void SetAlphaTestMode(bool enable)
{
AlphaTestMode alphaTestMode = AlphaTestMode::Disabled;
if (enable)
{
if (Config::AlphaToCoverage && g_renderTarget != nullptr && g_renderTarget->sampleCount != RenderSampleCount::COUNT_1)
alphaTestMode = AlphaTestMode::AlphaToCoverage;
else
alphaTestMode = AlphaTestMode::AlphaThreshold;
}
SetDirtyValue(g_dirtyStates.sharedConstants, g_sharedConstants.alphaTestMode, alphaTestMode);
SetDirtyValue(g_dirtyStates.pipelineState, g_pipelineState.enableAlphaToCoverage, alphaTestMode == AlphaTestMode::AlphaToCoverage);
}
static void SetRenderStateAlphaTestEnable(GuestDevice* device, uint32_t value)
{
SetDirtyValue(g_dirtyStates.sharedConstants, g_sharedConstants.alphaTestMode, value ? 1u : 0);
SetAlphaTestMode(value != 0);
}
static RenderBlend ConvertBlendMode(uint32_t blendMode)
@@ -1357,6 +1381,9 @@ static void SetRenderTarget(GuestDevice* device, uint32_t index, GuestSurface* r
SetDirtyValue(g_dirtyStates.renderTargetAndDepthStencil, g_renderTarget, renderTarget);
SetDirtyValue(g_dirtyStates.pipelineState, g_pipelineState.renderTargetFormat, renderTarget != nullptr ? renderTarget->format : RenderFormat::UNKNOWN);
SetDirtyValue(g_dirtyStates.pipelineState, g_pipelineState.sampleCount, renderTarget != nullptr ? renderTarget->sampleCount : RenderSampleCount::COUNT_1);
// When alpha to coverage is enabled, update the alpha test mode as it's dependent on sample count.
SetAlphaTestMode(g_sharedConstants.alphaTestMode != AlphaTestMode::Disabled);
}
static GuestSurface* GetDepthStencilSurface(GuestDevice* device)
@@ -1508,6 +1535,7 @@ static RenderPipeline* CreateGraphicsPipeline(const PipelineState& pipelineState
desc.renderTargetCount = pipelineState.renderTargetFormat != RenderFormat::UNKNOWN ? 1 : 0;
desc.depthTargetFormat = pipelineState.depthStencilFormat;
desc.multisampling.sampleCount = pipelineState.sampleCount;
desc.alphaToCoverageEnabled = pipelineState.enableAlphaToCoverage;
desc.inputElements = pipelineState.vertexDeclaration->inputElements.get();
desc.inputElementsCount = pipelineState.vertexDeclaration->inputElementCount;