gallium: implement set_sample_mask() in all drivers

prevents segfault when state trackers try to set default mask.
Other option would be to make this required only for drivers
supporting multisampling, but this seems more clean.
Only dummy implementations (for normal drivers) provided (no driver
supports multisampling yet neither).

1 files changed, 8 insertions, 0 deletions

diff --git a/src/gallium/drivers/r300/r300_state.c b/src/gallium/drivers/r300/r300_state.c
index 446422ca0f0..4f41530c16a 100644
--- a/src/gallium/drivers/r300/r300_state.c
+++ b/src/gallium/drivers/r300/r300_state.c
@@ -404,6 +404,13 @@ static void r300_set_clip_state(struct pipe_context* pipe,
     r300->clip_state.dirty = TRUE;
 }
 
+static void
+r300_set_sample_mask(struct pipe_context *pipe,
+                     unsigned sample_mask)
+{
+}
+
+
 /* Create a new depth, stencil, and alpha state based on the CSO dsa state.
  *
  * This contains the depth buffer, stencil buffer, alpha test, and such.
@@ -1502,6 +1509,7 @@ void r300_init_state_functions(struct r300_context* r300)
     r300->context.set_blend_color = r300_set_blend_color;
 
     r300->context.set_clip_state = r300_set_clip_state;
+    r300->context.set_sample_mask = r300_set_sample_mask;
 
     r300->context.set_constant_buffer = r300_set_constant_buffer;