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/amdgpu/drm/amdgpu_bo.c b/src/gallium/winsys/amdgpu/drm/amdgpu_bo.c
index a8447731dc9..82c803b564d 100644
--- a/src/gallium/winsys/amdgpu/drm/amdgpu_bo.c
+++ b/src/gallium/winsys/amdgpu/drm/amdgpu_bo.c
@@ -686,6 +686,11 @@ error:
     return NULL;
 }
 
+static bool amdgpu_bo_is_user_ptr(struct pb_buffer *buf)
+{
+   return ((struct amdgpu_winsys_bo*)buf)->user_ptr != NULL;
+}
+
 static uint64_t amdgpu_bo_get_va(struct pb_buffer *buf)
 {
    return ((struct amdgpu_winsys_bo*)buf)->va;
@@ -701,6 +706,7 @@ void amdgpu_bo_init_functions(struct amdgpu_winsys *ws)
    ws->base.buffer_create = amdgpu_bo_create;
    ws->base.buffer_from_handle = amdgpu_bo_from_handle;
    ws->base.buffer_from_ptr = amdgpu_bo_from_ptr;
+   ws->base.buffer_is_user_ptr = amdgpu_bo_is_user_ptr;
    ws->base.buffer_get_handle = amdgpu_bo_get_handle;
    ws->base.buffer_get_virtual_address = amdgpu_bo_get_va;
    ws->base.buffer_get_initial_domain = amdgpu_bo_get_initial_domain;