gallium: Set PIPE_BUFFER_USAGE_DISCARD flag in pipe_buffer_write.

diff --git a/src/gallium/include/pipe/p_inlines.h b/src/gallium/include/pipe/p_inlines.h
index 6949f56574cf1e43f3be0721f2725ae730c91b32..11ed46c7e7260ccd6e228948cee49fb0a680a641 100644 (file)
--- a/src/gallium/include/pipe/p_inlines.h
+++ b/src/gallium/include/pipe/p_inlines.h
@@ -119,7 +119,8 @@ pipe_buffer_write(struct pipe_screen *screen,
 
    map = pipe_buffer_map_range(screen, buf, offset, size, 
                                PIPE_BUFFER_USAGE_CPU_WRITE | 
-                               PIPE_BUFFER_USAGE_FLUSH_EXPLICIT);
+                               PIPE_BUFFER_USAGE_FLUSH_EXPLICIT |
+                               PIPE_BUFFER_USAGE_DISCARD);
    assert(map);
    if(map) {
       memcpy((uint8_t *)map + offset, data, size);