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st/mesa: only enable GL_EXT_framebuffer_multisample if GL_MAX_SAMPLES >= 2

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We never really have multisampling with one sample per pixel.
See also http://bugs.freedesktop.org/show_bug.cgi?id=59873

Note: This is a candidate for the 9.0 branch.

Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
(cherry picked from commit c80bacba2e)
This commit is contained in:
Brian Paul 2013-01-28 11:32:13 -07:00 • committed by Andreas Boll
parent 663e41547a
commit adcf0a0cf4
1 changed files with 3 additions and 1 deletions
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4
src/mesa/state_tracker/st_extensions.c
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@ -504,7 +504,6 @@ void st_init_extensions(struct st_context *st)
ctx->Extensions.EXT_blend_minmax = GL_TRUE;
ctx->Extensions.EXT_framebuffer_blit = GL_TRUE;
ctx->Extensions.EXT_framebuffer_object = GL_TRUE;
ctx->Extensions.EXT_framebuffer_multisample = GL_TRUE;
ctx->Extensions.EXT_fog_coord = GL_TRUE;
ctx->Extensions.EXT_gpu_program_parameters = GL_TRUE;
ctx->Extensions.EXT_pixel_buffer_object = GL_TRUE;
@ -634,6 +633,9 @@ void st_init_extensions(struct st_context *st)
/* one sample doesn't really make sense */
ctx->Const.MaxSamples = 0;
}
else if (ctx->Const.MaxSamples >= 2) {
ctx->Extensions.EXT_framebuffer_multisample = GL_TRUE;
}
if (ctx->Const.MaxDualSourceDrawBuffers > 0)
ctx->Extensions.ARB_blend_func_extended = GL_TRUE;