vrend: Don't synchronize compute shader IO interfaces

Compute shader don't have in- or outputs, so don't try to
sync the interfaces with the shaders that are still bound.

This fixes a state leak where non-compute shaders are still
bound when a compute shader is compiled.

Signed-off-by: Gert Wollny <gert.wollny@collabora.com>
Reviewed-by: Lepton Wu <lepton@chromium.org>

src/vrend_renderer.c

@@ -3473,7 +3473,8 @@ static inline void vrend_fill_shader_key(struct vrend_sub_context *sub_ctx,
    key->tcs_present = !!sub_ctx->shaders[PIPE_SHADER_TESS_CTRL];
    key->tes_present = !!sub_ctx->shaders[PIPE_SHADER_TESS_EVAL];
 
-   vrend_sync_shader_io(sub_ctx, sel, key);
+   if (type != PIPE_SHADER_COMPUTE)
+      vrend_sync_shader_io(sub_ctx, sel, key);
 }
 
 static int vrend_shader_create(struct vrend_context *ctx,