draw: limit the number of vertex shader variants kept around

we used to create and cache unltimited number of variant, this
change limits the number of variants kept around to a fixed number.
the change is based on a similar patch by Roland for llvmpipe fragment
shaders.

1 files changed, 5 insertions, 0 deletions

diff --git a/src/gallium/auxiliary/draw/draw_vs.c b/src/gallium/auxiliary/draw/draw_vs.c
index b9db886a24..57ea63fc06 100644
--- a/src/gallium/auxiliary/draw/draw_vs.c
+++ b/src/gallium/auxiliary/draw/draw_vs.c
@@ -98,6 +98,11 @@ draw_create_vertex_shader(struct draw_context *draw,
       vs = draw_create_vs_ppc( draw, shader );
 #endif
    }
+#if HAVE_LLVM
+   else {
+      vs = draw_create_vs_llvm(draw, shader);
+   }
+#endif
 
    if (!vs) {
       vs = draw_create_vs_exec( draw, shader );