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, 7 insertions, 0 deletions

diff --git a/src/gallium/drivers/svga/svga_pipe_depthstencil.c b/src/gallium/drivers/svga/svga_pipe_depthstencil.c
index c317bec6d57..c84615a1f3b 100644
--- a/src/gallium/drivers/svga/svga_pipe_depthstencil.c
+++ b/src/gallium/drivers/svga/svga_pipe_depthstencil.c
@@ -147,6 +147,12 @@ static void svga_set_stencil_ref( struct pipe_context *pipe,
    svga->dirty |= SVGA_NEW_STENCIL_REF;
 }
 
+static void
+svga_set_sample_mask(struct pipe_context *pipe,
+                     unsigned sample_mask)
+{
+}
+
 
 void svga_init_depth_stencil_functions( struct svga_context *svga )
 {
@@ -155,6 +161,7 @@ void svga_init_depth_stencil_functions( struct svga_context *svga )
    svga->pipe.delete_depth_stencil_alpha_state = svga_delete_depth_stencil_state;
 
    svga->pipe.set_stencil_ref = svga_set_stencil_ref;
+   svga->pipe.set_sample_mask = svga_set_sample_mask;
 }