Add ATI1/ATI2 format support for DDS parser

These are legacy DDS encodings of BC4/BC5; original Bistro scene comes with these for normal maps.
zeux · Dec 9, 2024 · 09d3b60 · 09d3b60
1 parent b9245a2
commit 09d3b60
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/src/textures.cpp b/src/textures.cpp
@@ -82,6 +82,10 @@ static VkFormat getFormat(const DDS_HEADER& header, const DDS_HEADER_DXT10& head
 		return VK_FORMAT_BC2_UNORM_BLOCK;
 	if (header.ddspf.dwFourCC == fourCC("DXT5"))
 		return VK_FORMAT_BC3_UNORM_BLOCK;
+	if (header.ddspf.dwFourCC == fourCC("ATI1"))
+		return VK_FORMAT_BC4_UNORM_BLOCK;
+	if (header.ddspf.dwFourCC == fourCC("ATI2"))
+		return VK_FORMAT_BC5_UNORM_BLOCK;
 
 	if (header.ddspf.dwFourCC == fourCC("DX10"))
 	{