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i965/gen8: Don't enable alpha test and alpha to coverage if draw bufer zero is integer type

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We follow this rule at multiple places in i965 driver. This patch
doesn't fix any testcase.

Signed-off-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Anuj Phogat 2016-10-18 15:52:19 -07:00
parent 93b84cae54
commit 35010718bc
1 changed files with 9 additions and 6 deletions
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15
src/mesa/drivers/dri/i965/gen8_blend_state.c
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@ -218,13 +218,16 @@ gen8_upload_ps_blend(struct brw_context *brw)
if (brw_color_buffer_write_enabled(brw))
dw1 |= GEN8_PS_BLEND_HAS_WRITEABLE_RT;
/* _NEW_COLOR */
if (ctx->Color.AlphaEnabled)
dw1 |= GEN8_PS_BLEND_ALPHA_TEST_ENABLE;
if(!buffer0_is_integer) {
/* _NEW_COLOR */
if (ctx->Color.AlphaEnabled)
dw1 |= GEN8_PS_BLEND_ALPHA_TEST_ENABLE;
/* _NEW_MULTISAMPLE */
if (_mesa_is_multisample_enabled(ctx) && ctx->Multisample.SampleAlphaToCoverage)
dw1 |= GEN8_PS_BLEND_ALPHA_TO_COVERAGE_ENABLE;
/* _NEW_MULTISAMPLE */
if (_mesa_is_multisample_enabled(ctx) &&
ctx->Multisample.SampleAlphaToCoverage)
dw1 |= GEN8_PS_BLEND_ALPHA_TO_COVERAGE_ENABLE;
}
/* Used for implementing the following bit of GL_EXT_texture_integer:
* "Per-fragment operations that require floating-point color