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[D3D12] Packed texture format swizzles

This commit is contained in:
Triang3l 2018-08-28 16:10:26 +03:00
parent df22ef2e6a
commit c2a5b65f8d
1 changed files with 7 additions and 1 deletions
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8
src/xenia/gpu/d3d12/texture_cache.cc
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@ -726,7 +726,13 @@ void TextureCache::TextureKeyFromFetchConstant(
// something broken) the quick and dirty way - by changing them to 4 and 5.
swizzle &= ~(swizzle_constant >> 1);
// Remap the swizzle according to the texture format.
if (format == TextureFormat::k_DXT3A) {
if (format == TextureFormat::k_1_5_5_5 || format == TextureFormat::k_5_6_5 ||
format == TextureFormat::k_4_4_4_4) {
// Swap red and blue.
swizzle ^= (~swizzle & (1 | (1 << 3) | (1 << 6) | (1 << 9)) &
(swizzle_not_constant >> 2))
<< 1;
} else if (format == TextureFormat::k_DXT3A) {
// DXT3A is emulated as DXT3 with zero color, but the alpha should be
// replicated into all channels.
// http://fileadmin.cs.lth.se/cs/Personal/Michael_Doggett/talks/unc-xenos-doggett.pdf