cso: check if pipe_context::bind_vertex_sampler_states is non-null

Fixes segfaults upon exit when the CSO module is releasing its objects.

1 files changed, 2 insertions, 1 deletions

diff --git a/src/gallium/auxiliary/cso_cache/cso_context.c b/src/gallium/auxiliary/cso_cache/cso_context.c
index b6f7b88322..80bd0c91db 100644
--- a/src/gallium/auxiliary/cso_cache/cso_context.c
+++ b/src/gallium/auxiliary/cso_cache/cso_context.c
@@ -260,7 +260,8 @@ void cso_release_all( struct cso_context *ctx )
       ctx->pipe->bind_blend_state( ctx->pipe, NULL );
       ctx->pipe->bind_rasterizer_state( ctx->pipe, NULL );
       ctx->pipe->bind_fragment_sampler_states( ctx->pipe, 0, NULL );
-      ctx->pipe->bind_vertex_sampler_states(ctx->pipe, 0, NULL);
+      if (ctx->pipe->bind_vertex_sampler_states)
+         ctx->pipe->bind_vertex_sampler_states(ctx->pipe, 0, NULL);
       ctx->pipe->bind_depth_stencil_alpha_state( ctx->pipe, NULL );
       ctx->pipe->bind_fs_state( ctx->pipe, NULL );
       ctx->pipe->bind_vs_state( ctx->pipe, NULL );