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NVTT 1.x wrote L8/L16 as RGB instead of LUMINANCE

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This commit is contained in:
Chuck Walbourn
2021-04-02 17:08:56 -07:00
parent d13f66af05
commit 5f22c7cc39
5 changed files with 178 additions and 120 deletions
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10
DirectXTex/DirectXTexDDS.cpp
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@@ -100,11 +100,15 @@ namespace
{ DXGI_FORMAT_B5G6R5_UNORM, CONV_FLAGS_EXPAND
| CONV_FLAGS_332, DDSPF_R3G3B2 }, // D3DFMT_R3G3B2
{ DXGI_FORMAT_R8_UNORM, CONV_FLAGS_NONE, DDSPF_L8 }, // D3DFMT_L8
{ DXGI_FORMAT_R16_UNORM, CONV_FLAGS_NONE, DDSPF_L16 }, // D3DFMT_L16
{ DXGI_FORMAT_R8_UNORM, CONV_FLAGS_NONE, DDSPF_L8 }, // D3DFMT_L8
{ 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)
// NVTT v1 wrote these with RGB instead of LUMINANCE
{ DXGI_FORMAT_R8_UNORM, CONV_FLAGS_NONE, DDSPF_L8_NVTT1 }, // D3DFMT_L8
{ DXGI_FORMAT_R16_UNORM, CONV_FLAGS_NONE, DDSPF_L16_NVTT1 }, // D3DFMT_L16
{ DXGI_FORMAT_R8G8_UNORM, CONV_FLAGS_NONE, DDSPF_A8L8_NVTT1 }, // D3DFMT_A8L8
{ DXGI_FORMAT_A8_UNORM, CONV_FLAGS_NONE, DDSPF_A8 }, // D3DFMT_A8