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st/mesa: set ctx->Const.MaxSamples = 0, not 1

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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.

Reviewed-by: Marek Olšák <maraeo@gmail.com>
This commit is contained in:
Brian Paul 2013-01-26 10:09:37 -07:00
parent 4e41ae5fc1
commit d60da27273
1 changed files with 4 additions and 0 deletions
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4
src/mesa/state_tracker/st_extensions.c
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@ -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;