We usually check that given parameters are different before
updating the state.
Signed-off-by: Samuel Pitoiset <samuel.pitoi...@gmail.com>
---
src/mesa/main/multisample.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/src/mesa/main/multisample.c b/src/mesa/main/multisample.c
index 5453e38632..f0e7a61180 100644
--- a/src/mesa/main/multisample.c
+++ b/src/mesa/main/multisample.c
@@ -41,11 +41,15 @@ _mesa_SampleCoverage(GLclampf value, GLboolean invert)
{
GET_CURRENT_CONTEXT(ctx);
- FLUSH_VERTICES(ctx, 0);
+ value = CLAMP(value, 0.0f, 1.0f);
+
+ if (ctx->Multisample.SampleCoverageInvert == invert &&
+ ctx->Multisample.SampleCoverageValue == value)
+ return;
- ctx->Multisample.SampleCoverageValue = CLAMP(value, 0.0f, 1.0f);
+ FLUSH_VERTICES(ctx, _NEW_MULTISAMPLE);
+ ctx->Multisample.SampleCoverageValue = value;
ctx->Multisample.SampleCoverageInvert = invert;
- ctx->NewState |= _NEW_MULTISAMPLE;
}
--
2.13.0
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