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Implement support for HDR with software decoding on macOS

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This commit is contained in:
Cameron Gutman
2024-08-22 00:05:26 -05:00
parent d2b3bc962f
commit df814fef4a
4 changed files with 259 additions and 60 deletions
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app/shaders/vt_renderer.metal
+21 -1
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@@ -10,6 +10,7 @@ struct CscParams
{
float3 matrix[3];
float3 offsets;
float bitnessScaleFactor;
};
constexpr sampler s(coord::normalized, address::clamp_to_edge, filter::linear);
@@ -24,7 +25,26 @@ fragment float4 ps_draw_biplanar(Vertex v [[ stage_in ]],
texture2d<float> luminancePlane [[ texture(0) ]],
texture2d<float> chrominancePlane [[ texture(1) ]])
{
float3 yuv = float3(luminancePlane.sample(s, v.texCoords).r, chrominancePlane.sample(s, v.texCoords).rg);
float3 yuv = float3(luminancePlane.sample(s, v.texCoords).r * cscParams.bitnessScaleFactor,
chrominancePlane.sample(s, v.texCoords).rg * cscParams.bitnessScaleFactor);
yuv -= cscParams.offsets;
float3 rgb;
rgb.r = dot(yuv, cscParams.matrix[0]);
rgb.g = dot(yuv, cscParams.matrix[1]);
rgb.b = dot(yuv, cscParams.matrix[2]);
return float4(rgb, 1.0f);
}
fragment float4 ps_draw_triplanar(Vertex v [[ stage_in ]],
constant CscParams &cscParams [[ buffer(0) ]],
texture2d<float> luminancePlane [[ texture(0) ]],
texture2d<float> chrominancePlaneU [[ texture(1) ]],
texture2d<float> chrominancePlaneV [[ texture(2) ]])
{
float3 yuv = float3(luminancePlane.sample(s, v.texCoords).r * cscParams.bitnessScaleFactor,
chrominancePlaneU.sample(s, v.texCoords).r * cscParams.bitnessScaleFactor,
chrominancePlaneV.sample(s, v.texCoords).r * cscParams.bitnessScaleFactor);
yuv -= cscParams.offsets;
float3 rgb;