diff options
Diffstat (limited to 'src/gallium/include/pipe/p_screen.h')
| -rw-r--r-- | src/gallium/include/pipe/p_screen.h | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/src/gallium/include/pipe/p_screen.h b/src/gallium/include/pipe/p_screen.h index d7e79ec655e..ed3a026023b 100644 --- a/src/gallium/include/pipe/p_screen.h +++ b/src/gallium/include/pipe/p_screen.h @@ -205,8 +205,10 @@ struct pipe_screen { /** * Map a subrange of the buffer data store into the client's address space. * - * Return pointer is always relative to offset 0, regardless of the - * read/write ranges. + * The returned pointer is always relative to buffer start, regardless of + * the specified range. This is different from the ARB_map_buffer_range + * semantics because we don't forbid multiple mappings of the same buffer + * (yet). */ void *(*buffer_map_range)( struct pipe_screen *screen, struct pipe_buffer *buf, @@ -215,7 +217,12 @@ struct pipe_screen { unsigned usage); /** - * written is the range that the client actually wrote. + * Notify a range that was actually written into. + * + * The range is relative to the buffer start, regardless of the range + * specified to buffer_map_range. This is different from the + * ARB_map_buffer_range semantics because we don't forbid multiple mappings + * of the same buffer (yet). */ void (*buffer_flush_mapped_range)( struct pipe_screen *screen, struct pipe_buffer *buf, |