gallium/radeon: do not reallocate user memory buffers

The whole point of AMD_pinned_memory is that applications don't have to map
buffers via OpenGL - but they're still allowed to, so make sure we don't break
the link between buffer object and user memory unless explicitly instructed
to.

Reviewed-by: Marek Olšák <[email protected]>

1 files changed, 6 insertions, 0 deletions

diff --git a/src/gallium/winsys/radeon/drm/radeon_drm_bo.c b/src/gallium/winsys/radeon/drm/radeon_drm_bo.c
index e35d2804390..3ec6a065c7d 100644
--- a/src/gallium/winsys/radeon/drm/radeon_drm_bo.c
+++ b/src/gallium/winsys/radeon/drm/radeon_drm_bo.c
@@ -1052,6 +1052,11 @@ static boolean radeon_winsys_bo_get_handle(struct pb_buffer *buffer,
     return TRUE;
 }
 
+static bool radeon_winsys_bo_is_user_ptr(struct pb_buffer *buf)
+{
+   return ((struct radeon_bo*)buf)->user_ptr != NULL;
+}
+
 static uint64_t radeon_winsys_bo_va(struct pb_buffer *buf)
 {
     return ((struct radeon_bo*)buf)->va;
@@ -1067,6 +1072,7 @@ void radeon_drm_bo_init_functions(struct radeon_drm_winsys *ws)
     ws->base.buffer_create = radeon_winsys_bo_create;
     ws->base.buffer_from_handle = radeon_winsys_bo_from_handle;
     ws->base.buffer_from_ptr = radeon_winsys_bo_from_ptr;
+    ws->base.buffer_is_user_ptr = radeon_winsys_bo_is_user_ptr;
     ws->base.buffer_get_handle = radeon_winsys_bo_get_handle;
     ws->base.buffer_get_virtual_address = radeon_winsys_bo_va;
     ws->base.buffer_get_initial_domain = radeon_bo_get_initial_domain;