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NVTT 1.x wrote A8L8 as RGB instead of LUMINANCE (#229)

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Chuck Walbourn
2021-03-30 15:16:12 -07:00
committed by GitHub
parent e57c8e0a12
commit 7b4b9b18f7
5 changed files with 22 additions and 0 deletions
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3
DirectXTex/DDS.h
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@@ -160,6 +160,9 @@ DDSGLOBALCONST DDS_PIXELFORMAT DDSPF_A8L8 =
DDSGLOBALCONST DDS_PIXELFORMAT DDSPF_A8L8_ALT =
{ sizeof(DDS_PIXELFORMAT), DDS_LUMINANCEA, 0, 8, 0x00ff, 0, 0, 0xff00 };
DDSGLOBALCONST DDS_PIXELFORMAT DDSPF_A8L8_NVTT1 =
{ sizeof(DDS_PIXELFORMAT), DDS_RGBA, 0, 16, 0x00ff, 0, 0, 0xff00 };
DDSGLOBALCONST DDS_PIXELFORMAT DDSPF_A8 =
{ sizeof(DDS_PIXELFORMAT), DDS_ALPHA, 0, 8, 0, 0, 0, 0xff };

1
DirectXTex/DirectXTexDDS.cpp
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@@ -104,6 +104,7 @@ namespace
{ DXGI_FORMAT_R16_UNORM, CONV_FLAGS_NONE, DDSPF_L16 }, // D3DFMT_L16
{ DXGI_FORMAT_R8G8_UNORM, CONV_FLAGS_NONE, DDSPF_A8L8 }, // D3DFMT_A8L8
{ DXGI_FORMAT_R8G8_UNORM, CONV_FLAGS_NONE, DDSPF_A8L8_ALT }, // D3DFMT_A8L8 (alternative bitcount)
{ DXGI_FORMAT_R8G8_UNORM, CONV_FLAGS_NONE, DDSPF_A8L8_NVTT1 }, // D3DFMT_A8L8 (NVTT v1 wrote it with RGB instead of LUMINANCE)
{ DXGI_FORMAT_A8_UNORM, CONV_FLAGS_NONE, DDSPF_A8 }, // D3DFMT_A8