svga: only destroy render target view from a context that created it

A texture can be destroyed from a different context from which it is
created, but destroying the render target view from a different context
will cause svga device errors. Similar to shader resource view,
this patch skips destroying render target view or depth stencil view
from a non-parent context.

Fixes driver errors running NobelClinician Viewer application.

Tested with NobelClinician Viewer, MTT piglit, glretrace.

Reviewed-by: Brian Paul <brianp@vmware.com>

src/gallium/drivers/svga/svga_surface.c

@@ -534,6 +534,16 @@ svga_surface_destroy(struct pipe_context *pipe,
    if (s->view_id != SVGA3D_INVALID_ID) {
       unsigned try;
 
+      /* The SVGA3D device will generate a device error if the
+       * render target view or depth stencil view is destroyed from
+       * a context other than the one it was created with.
+       * Similar to shader resource view, in this case, we will skip
+       * the destroy for now.
+       */
+      if (surf->context != pipe) {
+         _debug_printf("context mismatch in %s\n", __func__);
+      }
+      else {
          assert(svga_have_vgpu10(svga));
          for (try = 0; try < 2; try++) {
             if (util_format_is_depth_or_stencil(s->base.format)) {
@@ -549,6 +559,7 @@ svga_surface_destroy(struct pipe_context *pipe,
          assert(ret == PIPE_OK);
          util_bitmask_clear(svga->surface_view_id_bm, s->view_id);
       }
+   }
 
    pipe_resource_reference(&surf->texture, NULL);
    FREE(surf);