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dri: Add config attributes for color channel shift

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The existing mask attributes can only support up to 32 bpp. Introduce
per-channel SHIFT attributes that indicate how many bits, from lsb towards
msb, the bit field is offset. A shift of -1 will indicate that there is no
bit field set for the channel.

As old loaders will still be looking for masks, we set the masks to 0 for
any formats wider than 32 bpp.

Signed-off-by: Kevin Strasser <kevin.strasser@intel.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
This commit is contained in:
Kevin Strasser
2019-01-24 16:11:11 -08:00
committed by Adam Jackson
parent 9328e7c04c
commit 5a747306ce
4 changed files with 61 additions and 23 deletions
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9
src/mesa/main/context.c
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@@ -1564,9 +1564,12 @@ check_compatible(const struct gl_context *ctx,
ctxvis->foo != bufvis->foo) \
return GL_FALSE
check_component(redMask);
check_component(greenMask);
check_component(blueMask);
check_component(redShift);
check_component(greenShift);
check_component(blueShift);
check_component(redBits);
check_component(greenBits);
check_component(blueBits);
check_component(depthBits);
check_component(stencilBits);