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Optimize FrameReader by Caching Color Conversion Kernel

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copecone committed 2026-10-09 14:39:30 +09:00
1 parent eb648bbe09
commit 08b13460ae
1 file changed
+33 -31
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Util/FrameReader.cs
+33 -31
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@@ -26,12 +26,34 @@ namespace ADOFAIRenderer.Util
private readonly object _poolLock = new();
private bool _isInitialized;
private volatile bool _isDisposed;
private readonly AVPixelFormat _targetFormat;
private readonly ComputeShader? _computeShader;
private readonly int _kernelIndex = -1;
private readonly bool _useGPUConversion;
private readonly AVPixelFormat _expectedFormat;
public FrameReader(AVPixelFormat targetFormat)
{
_targetFormat = targetFormat;
_computeShader = ModAssets.ColorConversionShader;
if (_computeShader)
{
var kernelName = targetFormat switch
{
AVPixelFormat.AV_PIX_FMT_NV12 => "CSMain_NV12",
AVPixelFormat.AV_PIX_FMT_YUV420P => "CSMain_YUV420P",
_ => null
};
if (kernelName != null)
{
try { _kernelIndex = _computeShader.FindKernel(kernelName); }
catch { _kernelIndex = -1; }
}
}
_useGPUConversion = _kernelIndex >= 0;
_expectedFormat = _useGPUConversion ? targetFormat : AVPixelFormat.AV_PIX_FMT_RGBA;
InitializePool();
}
@@ -71,42 +93,22 @@ namespace ADOFAIRenderer.Util
state.IsInFlight = true;
}
// Check if GPU color conversion is available
var expectedFmt = AVPixelFormat.AV_PIX_FMT_RGBA;
var kernelIndex = -1;
if (ModAssets.ColorConversionShader)
{
var kernalName = _targetFormat switch
{
AVPixelFormat.AV_PIX_FMT_NV12 => "CSMain_NV12",
AVPixelFormat.AV_PIX_FMT_YUV420P => "CSMain_YUV420P",
_ => null
};
if (kernalName != null)
kernelIndex = ModAssets.ColorConversionShader.FindKernel(kernalName);
}
var useGPUConversion = kernelIndex >= 0;
if (useGPUConversion) expectedFmt = _targetFormat;
var bufferSize = texture.width * texture.height * 4; // RGBA = 4 channel
state.Setup(currentFrame, bufferSize, useGPUConversion, expectedFmt, texture.width, texture.height);
state.Setup(currentFrame, bufferSize, _useGPUConversion, _expectedFormat, texture.width, texture.height);
if (useGPUConversion && state.GPUBuffer != null && ModAssets.ColorConversionShader)
if (_useGPUConversion && state.GPUBuffer != null && _computeShader)
{
ModAssets.ColorConversionShader.SetTexture(kernelIndex, SourceTexture, texture);
ModAssets.ColorConversionShader.SetBuffer(kernelIndex, DestinationBuffer, state.GPUBuffer);
ModAssets.ColorConversionShader.SetInt(Width, texture.width);
ModAssets.ColorConversionShader.SetInt(Height, texture.height);
_computeShader.SetTexture(_kernelIndex, SourceTexture, texture);
_computeShader.SetBuffer(_kernelIndex, DestinationBuffer, state.GPUBuffer);
_computeShader.SetInt(Width, texture.width);
_computeShader.SetInt(Height, texture.height);
var threadGroupsX = expectedFmt == AVPixelFormat.AV_PIX_FMT_NV12
var threadGroupsX = _expectedFormat == AVPixelFormat.AV_PIX_FMT_NV12
? (texture.width + 31) / 32
: (texture.width + 63) / 64;
var threadGroupsY = (texture.height + 15) / 16;
ModAssets.ColorConversionShader.Dispatch(kernelIndex, threadGroupsX, threadGroupsY, 1);
_computeShader.Dispatch(_kernelIndex, threadGroupsX, threadGroupsY, 1);
AsyncGPUReadback.RequestIntoNativeArray(
ref state.NativeBuffer, state.GPUBuffer, state.CachedCallback