summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--src/mesa/drivers/dri/intel/intel_buffer_objects.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/mesa/drivers/dri/intel/intel_buffer_objects.c b/src/mesa/drivers/dri/intel/intel_buffer_objects.c
index 4a1a8165be5..9b1f642c0f1 100644
--- a/src/mesa/drivers/dri/intel/intel_buffer_objects.c
+++ b/src/mesa/drivers/dri/intel/intel_buffer_objects.c
@@ -663,7 +663,9 @@ intel_bufferobj_copy_subdata(struct gl_context *ctx,
*/
if (src == dst) {
char *ptr = intel_bufferobj_map_range(ctx, 0, dst->Size,
- GL_MAP_READ_BIT, dst);
+ GL_MAP_READ_BIT |
+ GL_MAP_WRITE_BIT,
+ dst);
memmove(ptr + write_offset, ptr + read_offset, size);
intel_bufferobj_unmap(ctx, dst);
} else {