From: Dave Airlie <airlied@redhat.com>
Date: Wed, 4 Feb 2009 01:14:38 +0000 (+1000)
Subject: radeon: only do the fb read if we are mapping a VRAM object
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=c85a3851b6519c24780e94dea570a72418621189;p=mesa.git

radeon: only do the fb read if we are mapping a VRAM object

this makes writing the DMA buffers got a lot better
---

diff --git a/src/mesa/drivers/dri/radeon/radeon_bo_legacy.c b/src/mesa/drivers/dri/radeon/radeon_bo_legacy.c
index 71fe27609b3..993bac81243 100644
--- a/src/mesa/drivers/dri/radeon/radeon_bo_legacy.c
+++ b/src/mesa/drivers/dri/radeon/radeon_bo_legacy.c
@@ -479,7 +479,7 @@ static int bo_map(struct radeon_bo *bo, int write)
      * framebuffer, but I've found this to be unnecessary.
      *  -- Nicolai Hähnle, June 2008
      */
-    {
+    if (!(bo->domains & RADEON_GEM_DOMAIN_GTT)) {
         int p;
         volatile int *buf = (int*)boml->screen->driScreen->pFB;
         p = *buf;