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[GPU] _REP explanation in Cr_Y1_Cb_Y0_REP/Y1_Cr_Y0_Cb_REP comment [ci skip]

This commit is contained in:
Triang3l 2022-05-22 21:46:04 +03:00
parent 6735dbd941
commit ef808e9def
1 changed files with 5 additions and 3 deletions
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8
src/xenia/gpu/xenos.h
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@ -411,11 +411,13 @@ enum class TextureFormat : uint32_t {
k_8_A = 8,
k_8_B = 9,
k_8_8 = 10,
// Though it's unknown what exactly REP means, likely it's "repeating
// fraction" (the term used for normalized fixed-point formats, UNORM here in
// particular - 0.0 to 1.0 range, like in Direct3D 10+, unlike the 0.0 to
// 255.0 range for D3DFMT_R8G8_B8G8 and D3DFMT_G8R8_G8B8 in Direct3D 9).
// 54540829 uses k_Y1_Cr_Y0_Cb_REP directly as UNORM.
k_Cr_Y1_Cb_Y0_REP = 11,
// Used for videos in 54540829.
// TODO(Triang3l): D3DFMT_G8R8_G8B8 is DXGI_FORMAT_R8G8_B8G8_UNORM * 255.0f,
// watch out for num_format int, division in shaders, etc., in 54540829 it
// works as is with UNORM on the host.
k_Y1_Cr_Y0_Cb_REP = 12,
k_16_16_EDRAM = 13,
k_8_8_8_8_A = 14,