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, 6 insertions, 0 deletions

diff --git a/src/gallium/drivers/llvmpipe/lp_state_blend.c b/src/gallium/drivers/llvmpipe/lp_state_blend.c
index 8569507f4e5..5b39d9d1a91 100644
--- a/src/gallium/drivers/llvmpipe/lp_state_blend.c
+++ b/src/gallium/drivers/llvmpipe/lp_state_blend.c
@@ -148,6 +148,11 @@ llvmpipe_set_stencil_ref(struct pipe_context *pipe,
    llvmpipe->dirty |= LP_NEW_DEPTH_STENCIL_ALPHA;
 }
 
+static void
+llvmpipe_set_sample_mask(struct pipe_context *pipe,
+                         unsigned sample_mask)
+{
+}
 
 void
 llvmpipe_init_blend_funcs(struct llvmpipe_context *llvmpipe)
@@ -163,4 +168,5 @@ llvmpipe_init_blend_funcs(struct llvmpipe_context *llvmpipe)
    llvmpipe->pipe.set_blend_color = llvmpipe_set_blend_color;
 
    llvmpipe->pipe.set_stencil_ref = llvmpipe_set_stencil_ref;
+   llvmpipe->pipe.set_sample_mask = llvmpipe_set_sample_mask;
 }