diff options
Diffstat (limited to 'src/gallium/winsys/xlib/xm_winsys.c')
| -rw-r--r-- | src/gallium/winsys/xlib/xm_winsys.c | 36 |
1 files changed, 35 insertions, 1 deletions
diff --git a/src/gallium/winsys/xlib/xm_winsys.c b/src/gallium/winsys/xlib/xm_winsys.c index 5e9a1f92f1..2acbc94fc8 100644 --- a/src/gallium/winsys/xlib/xm_winsys.c +++ b/src/gallium/winsys/xlib/xm_winsys.c @@ -276,6 +276,37 @@ xm_buffer_destroy(struct pipe_winsys *pws, /** + * For Cell. Basically, rearrange the pixels/quads from this layout: + * +--+--+--+--+ + * |p0|p1|p2|p3|.... + * +--+--+--+--+ + * + * to this layout: + * +--+--+ + * |p0|p1|.... + * +--+--+ + * |p2|p3| + * +--+--+ + */ +static void +twiddle_tile(const uint *tileIn, uint *tileOut) +{ + int y, x; + + for (y = 0; y < TILE_SIZE; y+=2) { + for (x = 0; x < TILE_SIZE; x+=2) { + int k = 4 * (y/2 * TILE_SIZE/2 + x/2); + tileOut[y * TILE_SIZE + (x + 0)] = tileIn[k]; + tileOut[y * TILE_SIZE + (x + 1)] = tileIn[k+1]; + tileOut[(y + 1) * TILE_SIZE + (x + 0)] = tileIn[k+2]; + tileOut[(y + 1) * TILE_SIZE + (x + 1)] = tileIn[k+3]; + } + } +} + + + +/** * Display a surface that's in a tiled configuration. That is, all the * pixels for a TILE_SIZExTILE_SIZE block are contiguous in memory. */ @@ -306,6 +337,7 @@ xmesa_display_surface_tiled(XMesaBuffer b, const struct pipe_surface *surf) for (y = 0; y < surf->height; y += TILE_SIZE) { for (x = 0; x < surf->width; x += TILE_SIZE) { + uint tmpTile[TILE_SIZE * TILE_SIZE]; int tx = x / TILE_SIZE; int ty = y / TILE_SIZE; int offset = ty * tilesPerRow + tx; @@ -319,7 +351,9 @@ xmesa_display_surface_tiled(XMesaBuffer b, const struct pipe_surface *surf) offset *= 4 * TILE_SIZE * TILE_SIZE; - ximage->data = (char *) xm_buf->data + offset; + twiddle_tile((uint *) ((char *) xm_buf->data + offset), + tmpTile); + ximage->data = (char*) tmpTile; if (XSHM_ENABLED(xm_buf)) { #if defined(USE_XSHM) && !defined(XFree86Server) |