Mesa (master): st/dri: don't expose MSAA configs with accumulation buffer

[Marek Olšák]

Module: Mesa
Branch: master
Commit: 888714feb6fe9ff22221f4f8a6ed6abd904a2761
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=888714feb6fe9ff22221f4f8a6ed6abd904a2761

Author: Marek Olšák <maraeo at gmail.com>
Date:   Mon Dec  3 03:40:43 2012 +0100

st/dri: don't expose MSAA configs with accumulation buffer

Reviewed-by: Brian Paul <brianp at vmware.com>

---

 src/gallium/state_trackers/dri/common/dri_screen.c |   14 +++++++++++++-
 1 files changed, 13 insertions(+), 1 deletions(-)

diff --git a/src/gallium/state_trackers/dri/common/dri_screen.c b/src/gallium/state_trackers/dri/common/dri_screen.c
index 96efa1f..df2cd3f 100644
--- a/src/gallium/state_trackers/dri/common/dri_screen.c
+++ b/src/gallium/state_trackers/dri/common/dri_screen.c
@@ -164,13 +164,25 @@ dri_fill_in_modes(struct dri_screen *screen)
       }
 
       if (num_msaa_modes) {
+         /* Single-sample configs with an accumulation buffer. */
          new_configs = driCreateConfigs(mesa_formats[format],
                                         depth_bits_array, stencil_bits_array,
                                         depth_buffer_factor, back_buffer_modes,
                                         Elements(back_buffer_modes),
-                                        msaa_modes, num_msaa_modes,
+                                        msaa_modes, 1,
                                         GL_TRUE);
          configs = driConcatConfigs(configs, new_configs);
+
+         /* Multi-sample configs without an accumulation buffer. */
+         if (num_msaa_modes > 1) {
+            new_configs = driCreateConfigs(mesa_formats[format],
+                                           depth_bits_array, stencil_bits_array,
+                                           depth_buffer_factor, back_buffer_modes,
+                                           Elements(back_buffer_modes),
+                                           msaa_modes+1, num_msaa_modes-1,
+                                           GL_FALSE);
+            configs = driConcatConfigs(configs, new_configs);
+         }
       }
    }