Commit c5363869 authored by Gert Wollny's avatar Gert Wollny Committed by Gert Wollny

i965: Force zero swizzles for unused components in GL_RED and GL_RG

This makes it possible to use a hardware luminance format as RED format.
Signed-off-by: 's avatarGert Wollny <>
Reviewed-by: 's avatarEric Engestrom <>
parent ebcde345
......@@ -420,7 +420,11 @@ brw_get_texture_swizzle(const struct gl_context *ctx,
case GL_RED:
swizzles[1] = SWIZZLE_ZERO;
/* fallthrough */
case GL_RG:
swizzles[2] = SWIZZLE_ZERO;
/* fallthrough */
case GL_RGB:
if (_mesa_get_format_bits(img->TexFormat, GL_ALPHA_BITS) > 0 ||
img->TexFormat == MESA_FORMAT_RGB_DXT1 ||
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