diff options
| -rw-r--r-- | src/mesa/main/bufferobj.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/mesa/main/bufferobj.c b/src/mesa/main/bufferobj.c index 462519895a4..5f8071f587f 100644 --- a/src/mesa/main/bufferobj.c +++ b/src/mesa/main/bufferobj.c @@ -504,7 +504,7 @@ _mesa_copy_buffer_subdata(struct gl_context *ctx, { void *srcPtr, *dstPtr; - /* buffer should not already be mapped */ + /* the buffers should not be mapped */ assert(!_mesa_bufferobj_mapped(src)); assert(!_mesa_bufferobj_mapped(dst)); @@ -514,6 +514,9 @@ _mesa_copy_buffer_subdata(struct gl_context *ctx, (GL_MAP_WRITE_BIT | GL_MAP_INVALIDATE_RANGE_BIT), dst); + /* Note: the src and dst regions will never overlap. Trying to do so + * would generate GL_INVALID_VALUE earlier. + */ if (srcPtr && dstPtr) memcpy(dstPtr, srcPtr, size); |