[Mesa-dev] [PATCH 19/19] r600g: enable MSAA on evergreen by default

[Marek Olšák]

---
 src/gallium/drivers/r600/evergreen_state.c |   24 +++++++++++++++++++++---
 1 file changed, 21 insertions(+), 3 deletions(-)

diff --git a/src/gallium/drivers/r600/evergreen_state.c 
b/src/gallium/drivers/r600/evergreen_state.c
index e6e2fb2..56e392e 100644
--- a/src/gallium/drivers/r600/evergreen_state.c
+++ b/src/gallium/drivers/r600/evergreen_state.c
@@ -620,6 +620,7 @@ boolean evergreen_is_format_supported(struct pipe_screen 
*screen,
                                      unsigned sample_count,
                                      unsigned usage)
 {
+       struct r600_screen *rscreen = (struct r600_screen*)screen;
        unsigned retval = 0;
 
        if (target >= PIPE_MAX_TEXTURE_TYPES) {
@@ -630,9 +631,26 @@ boolean evergreen_is_format_supported(struct pipe_screen 
*screen,
        if (!util_format_is_supported(format, usage))
                return FALSE;
 
-       /* Multisample */
-       if (sample_count > 1)
-               return FALSE;
+       if (sample_count > 1) {
+               if (rscreen->chip_class != EVERGREEN)
+                       return FALSE;
+
+               switch (sample_count) {
+               case 2:
+               case 4:
+               case 8:
+                       break;
+               default:
+                       return FALSE;
+               }
+
+               /* require render-target support for multisample resources */
+               if (util_format_is_depth_or_stencil(format)) {
+                       usage |= PIPE_BIND_DEPTH_STENCIL;
+               } else {
+                       usage |= PIPE_BIND_RENDER_TARGET;
+               }
+       }
 
        if ((usage & PIPE_BIND_SAMPLER_VIEW) &&
            r600_is_sampler_format_supported(screen, format)) {
-- 
1.7.9.5

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