gallium: improvements, or extensions at least, to the passthrough path

Passthrough is actually more tricky than you'd think...

1 files changed, 11 insertions, 2 deletions

diff --git a/src/gallium/drivers/softpipe/sp_prim_vbuf.c b/src/gallium/drivers/softpipe/sp_prim_vbuf.c
index e7d0cb2b87..d940718ed2 100644
--- a/src/gallium/drivers/softpipe/sp_prim_vbuf.c
+++ b/src/gallium/drivers/softpipe/sp_prim_vbuf.c
@@ -101,11 +101,20 @@ sp_vbuf_release_vertices(struct vbuf_render *vbr, void *vertices,
 }
 
 
-static void
+static boolean
 sp_vbuf_set_primitive(struct vbuf_render *vbr, unsigned prim)
 {
    struct softpipe_vbuf_render *cvbr = softpipe_vbuf_render(vbr);
-   cvbr->prim = prim;
+   if (prim == PIPE_PRIM_TRIANGLES ||
+       prim == PIPE_PRIM_LINES ||
+       prim == PIPE_PRIM_POINTS) {
+      cvbr->prim = prim;
+      return TRUE;
+   }
+   else {
+      return FALSE;
+   }
+      
 }