summaryrefslogtreecommitdiff
path: root/src/gallium/winsys/drm/nouveau
diff options
context:
space:
mode:
Diffstat (limited to 'src/gallium/winsys/drm/nouveau')
-rw-r--r--src/gallium/winsys/drm/nouveau/common/nouveau_winsys_pipe.c20
1 files changed, 0 insertions, 20 deletions
diff --git a/src/gallium/winsys/drm/nouveau/common/nouveau_winsys_pipe.c b/src/gallium/winsys/drm/nouveau/common/nouveau_winsys_pipe.c
index c8f26d5fad..683710ee3c 100644
--- a/src/gallium/winsys/drm/nouveau/common/nouveau_winsys_pipe.c
+++ b/src/gallium/winsys/drm/nouveau/common/nouveau_winsys_pipe.c
@@ -121,26 +121,6 @@ nouveau_pipe_bo_map(struct pipe_winsys *pws, struct pipe_buffer *buf,
if (flags & PIPE_BUFFER_USAGE_CPU_WRITE)
map_flags |= NOUVEAU_BO_WR;
- /* XXX: Technically incorrect. If the client maps a buffer for write-only
- * and leaves part of the buffer untouched it probably expects those parts
- * to remain intact. This is violated because we allocate a whole new buffer
- * and don't copy the previous buffer's contents, so this optimization is
- * only valid if the client intends to overwrite the whole buffer.
- */
- if ((map_flags & NOUVEAU_BO_RDWR) == NOUVEAU_BO_WR &&
- !nouveau_bo_busy(nvbuf->bo, map_flags)) {
- struct nouveau_pipe_winsys *nvpws = (struct nouveau_pipe_winsys *)pws;
- struct nouveau_context *nv = nvpws->nv;
- struct nouveau_device *dev = nv->nv_screen->device;
- struct nouveau_bo *rename;
- uint32_t flags = nouveau_flags_from_usage(nv, buf->usage);
-
- if (!nouveau_bo_new(dev, flags, buf->alignment, buf->size, &rename)) {
- nouveau_bo_del(&nvbuf->bo);
- nvbuf->bo = rename;
- }
- }
-
if (nouveau_bo_map(nvbuf->bo, map_flags))
return NULL;
return nvbuf->bo->map;