diff options
Diffstat (limited to 'src/gallium/winsys/xlib')
| -rw-r--r-- | src/gallium/winsys/xlib/xm_winsys.c | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/src/gallium/winsys/xlib/xm_winsys.c b/src/gallium/winsys/xlib/xm_winsys.c index 2acbc94fc8..3334af175b 100644 --- a/src/gallium/winsys/xlib/xm_winsys.c +++ b/src/gallium/winsys/xlib/xm_winsys.c @@ -349,19 +349,26 @@ xmesa_display_surface_tiled(XMesaBuffer b, const struct pipe_surface *surf) if (x + w > surf->width) w = surf->width - x; - offset *= 4 * TILE_SIZE * TILE_SIZE; - - twiddle_tile((uint *) ((char *) xm_buf->data + offset), - tmpTile); - ximage->data = (char*) tmpTile; + /* offset in pixels */ + offset *= TILE_SIZE * TILE_SIZE; if (XSHM_ENABLED(xm_buf)) { + ximage->data = (char *) xm_buf->data + 4 * offset; + /* make copy of tile data */ + memcpy(tmpTile, (uint *) ximage->data, sizeof(tmpTile)); + /* twiddle from temp to ximage in shared memory */ + twiddle_tile(tmpTile, (uint *) ximage->data); + /* display image in shared memory */ #if defined(USE_XSHM) && !defined(XFree86Server) XShmPutImage(b->xm_visual->display, b->drawable, b->gc, ximage, 0, 0, x, y, w, h, False); #endif } else { + /* twiddel from ximage buffer to temp tile */ + twiddle_tile((uint *) xm_buf->data + offset, tmpTile); + /* display temp tile data */ + ximage->data = (char *) tmpTile; XPutImage(b->xm_visual->display, b->drawable, b->gc, ximage, 0, 0, x, y, w, h); } |