1 files changed, 7 insertions, 1 deletions
diff --git a/src/radeon_render.c b/src/radeon_render.c
index 191fb693..5f29157f 100644
--- a/src/radeon_render.c
+++ b/src/radeon_render.c
@@ -281,11 +281,17 @@ AllocateLinear (
    ScrnInfoPtr pScrn,
    int sizeNeeded
 ){
-    RADEONInfoPtr  info       = RADEONPTR(pScrn);
+   RADEONInfoPtr  info       = RADEONPTR(pScrn);
+   int cpp = info->CurrentLayout.bitsPerPixel / 8;
 
    info->RenderTimeout = currentTime.milliseconds + 30000;
    info->RenderCallback = RenderCallback;
 
+   /* XAA allocates in units of pixels at the screen bpp, so adjust size
+    * appropriately.
+    */
+   sizeNeeded = (sizeNeeded + cpp - 1) / cpp;
+
    if (info->RenderTex) {
 	if (info->RenderTex->size >= sizeNeeded)
 	   return TRUE;