The gallium docs for pipe_screen::is_format_supported() says that
samples==0 or samples==1 both mean that multisampling is not supported.
Return GL_MAX_SAMPLES==0 instead of 1 for consistency with other drivers.
Note: This is a candidate for the 9.0 branch.
---
src/mesa/state_tracker/st_extensions.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/src/mesa/state_tracker/st_extensions.c
b/src/mesa/state_tracker/st_extensions.c
index af54cf7..f0d8a4c 100644
--- a/src/mesa/state_tracker/st_extensions.c
+++ b/src/mesa/state_tracker/st_extensions.c
@@ -653,6 +653,10 @@ void st_init_extensions(struct st_context *st)
break;
}
}
+ if (ctx->Const.MaxSamples == 1) {
+ /* one sample doesn't really make sense */
+ ctx->Const.MaxSamples = 0;
+ }
if (ctx->Const.MaxDualSourceDrawBuffers > 0)
ctx->Extensions.ARB_blend_func_extended = GL_TRUE;
--
1.7.3.4
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