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i965: Add an option to ignore sample qualifier

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This will be useful in my next patch which depends on a functionality
of _mesa_get_min_invocations_per_fragment() to ignore the sample
qualifier (prog->IsSample) based on a flag passed to it.

Cc: mesa-stable@lists.freedesktop.org
Signed-off-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Chris Forbes <chrisf@ijw.co.nz>
This commit is contained in:
Anuj Phogat
2014-01-13 12:26:55 -08:00
parent 78d65476b6
commit 3313cc269b
5 changed files with 9 additions and 7 deletions
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5
src/mesa/program/program.c
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@@ -1023,7 +1023,8 @@ _mesa_postprocess_program(struct gl_context *ctx, struct gl_program *prog)
*/
GLint
_mesa_get_min_invocations_per_fragment(struct gl_context *ctx,
const struct gl_fragment_program *prog)
const struct gl_fragment_program *prog,
bool ignore_sample_qualifier)
{
/* From ARB_sample_shading specification:
* "Using gl_SampleID in a fragment shader causes the entire shader
@@ -1041,7 +1042,7 @@ _mesa_get_min_invocations_per_fragment(struct gl_context *ctx,
* "Use of the "sample" qualifier on a fragment shader input
* forces per-sample shading"
*/
if (prog->IsSample)
if (prog->IsSample && !ignore_sample_qualifier)
return MAX2(ctx->DrawBuffer->Visual.samples, 1);
if (prog->Base.SystemValuesRead & (SYSTEM_BIT_SAMPLE_ID |