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, 12 insertions, 0 deletions

diff --git a/src/gallium/drivers/identity/id_context.c b/src/gallium/drivers/identity/id_context.c
index bd1b5ea2d0e..9813170fb18 100644
--- a/src/gallium/drivers/identity/id_context.c
+++ b/src/gallium/drivers/identity/id_context.c
@@ -452,6 +452,17 @@ identity_set_clip_state(struct pipe_context *_pipe,
 }
 
 static void
+identity_set_sample_mask(struct pipe_context *_pipe,
+                         unsigned sample_mask)
+{
+   struct identity_context *id_pipe = identity_context(_pipe);
+   struct pipe_context *pipe = id_pipe->pipe;
+
+   pipe->set_sample_mask(pipe,
+                         sample_mask);
+}
+
+static void
 identity_set_constant_buffer(struct pipe_context *_pipe,
                              uint shader,
                              uint index,
@@ -892,6 +903,7 @@ identity_context_create(struct pipe_screen *_screen, struct pipe_context *pipe)
    id_pipe->base.set_blend_color = identity_set_blend_color;
    id_pipe->base.set_stencil_ref = identity_set_stencil_ref;
    id_pipe->base.set_clip_state = identity_set_clip_state;
+   id_pipe->base.set_sample_mask = identity_set_sample_mask;
    id_pipe->base.set_constant_buffer = identity_set_constant_buffer;
    id_pipe->base.set_framebuffer_state = identity_set_framebuffer_state;
    id_pipe->base.set_polygon_stipple = identity_set_polygon_stipple;