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[GPU] Decode repeated FP16 and uint buffer fill words

This commit is contained in:
ParantezTech 2026-10-13 04:54:36 +03:00
parent f19c4ca4d5
commit 8164636d99
1 changed files with 24 additions and 0 deletions
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24
src/SharpEmu.Libs/Gpu/Images/ImageDescription.cs
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@ -597,6 +597,30 @@ public static class PackedClearValue
_ => 0,
};
// A buffer fill repeats the word in every texel, unlike a DCC clear register.
public static bool TryDecodeBufferColor(Format format, uint packed, out ClearColorValue clear)
{
clear = default;
switch (format)
{
case Format.R16G16Sfloat:
case Format.R16G16B16A16Sfloat:
var low = BitConverter.UInt16BitsToHalf((ushort)packed);
var high = BitConverter.UInt16BitsToHalf((ushort)(packed >> 16));
// A float conversion may change a NaN payload; keep the raw fill in that case.
if (Half.IsNaN(low) || Half.IsNaN(high)) return false;
clear.Float32_0 = clear.Float32_2 = (float)low;
clear.Float32_1 = clear.Float32_3 = (float)high;
return true;
case Format.R32G32Uint:
case Format.R32G32B32A32Uint:
clear.Uint32_0 = clear.Uint32_1 = clear.Uint32_2 = clear.Uint32_3 = packed;
return true;
default:
return TryDecodeColor(format, packed, out clear);
}
}
public static bool TryDecodeColor(Format format, uint packed, out ClearColorValue clear)
{
static float Unorm8(uint value) => (value & 0xff) / 255.0f;