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changing the GL base internal format for BC6H to be RGB not RGBA

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This commit is contained in:
Richard Geldreich
2026-07-03 02:06:10 -04:00
parent 0442737aa7
commit 0857faf8d7
2 changed files with 5 additions and 5 deletions
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8
encoder/basisu_gpu_texture.cpp
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@@ -1527,13 +1527,13 @@ namespace basisu
case texture_format::cBC6HSigned:
{
internal_fmt = KTX_COMPRESSED_RGB_BPTC_SIGNED_FLOAT;
base_internal_fmt = KTX_RGBA;
base_internal_fmt = KTX_RGB;
break;
}
case texture_format::cBC6HUnsigned:
{
internal_fmt = KTX_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT;
base_internal_fmt = KTX_RGBA;
base_internal_fmt = KTX_RGB;
break;
}
case texture_format::cBC7:
@@ -1556,8 +1556,8 @@ namespace basisu
case texture_format::cASTC_HDR_6x6:
{
internal_fmt = KTX_COMPRESSED_RGBA_ASTC_6x6_KHR;
// TODO: should we write RGB? We don't support generating HDR 6x6 with alpha.
base_internal_fmt = KTX_RGBA;
// RGBA is correct: ASTC HDR can have alpha, and the RGBA ASTC token's base format is RGBA.
base_internal_fmt = KTX_RGBA;
break;
}
// We use different enums for HDR vs. LDR ASTC, but internally they are both just ASTC.