Merge remote branch 'upstream/gallium-0.1' into nouveau-gallium-0.1

2 files changed, 40 insertions, 1 deletions

diff --git a/src/gallium/winsys/xlib/xm_api.c b/src/gallium/winsys/xlib/xm_api.c
index b0105131071..d28a6423b9e 100644
--- a/src/gallium/winsys/xlib/xm_api.c
+++ b/src/gallium/winsys/xlib/xm_api.c
@@ -349,12 +349,17 @@ create_xmesa_buffer(XMesaDrawable d, BufferType type,
 
    if (vis->mesa_visual.depthBits == 0)
       depthFormat = PIPE_FORMAT_NONE;
+#ifdef GALLIUM_CELL /* XXX temporary for Cell! */
+   else
+      depthFormat = PIPE_FORMAT_S8Z24_UNORM;
+#else
    else if (vis->mesa_visual.depthBits <= 16)
       depthFormat = PIPE_FORMAT_Z16_UNORM;
    else if (vis->mesa_visual.depthBits <= 24)
       depthFormat = PIPE_FORMAT_S8Z24_UNORM;
    else
       depthFormat = PIPE_FORMAT_Z32_UNORM;
+#endif
 
    if (vis->mesa_visual.stencilBits == 8) {
       if (depthFormat == PIPE_FORMAT_S8Z24_UNORM)
diff --git a/src/gallium/winsys/xlib/xm_winsys.c b/src/gallium/winsys/xlib/xm_winsys.c
index 5e9a1f92f11..2acbc94fc8d 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)