Mesa (master): i915: fallback on transfer mode

[Haihao Xiang]

Module: Mesa
Branch: master
Commit: 66a4f5cf9a74f906f802eeeae56de79fc640a2c9
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=66a4f5cf9a74f906f802eeeae56de79fc640a2c9

Author: Xiang, Haihao <haihao.xiang at intel.com>
Date:   Fri Jan 16 16:06:33 2009 +0800

i915: fallback on transfer mode

---

 src/mesa/drivers/dri/intel/intel_pixel_copy.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/src/mesa/drivers/dri/intel/intel_pixel_copy.c b/src/mesa/drivers/dri/intel/intel_pixel_copy.c
index 447c649..7c7aa60 100644
--- a/src/mesa/drivers/dri/intel/intel_pixel_copy.c
+++ b/src/mesa/drivers/dri/intel/intel_pixel_copy.c
@@ -119,6 +119,12 @@ do_texture_copypixels(GLcontext * ctx,
    if (!src || !dst || type != GL_COLOR)
       return GL_FALSE;
 
+   if (ctx->_ImageTransferState) {
+      if (INTEL_DEBUG & DEBUG_PIXEL)
+         fprintf(stderr, "%s: check_color failed\n", __FUNCTION__);
+      return GL_FALSE;
+   }
+
    /* Can't handle overlapping regions.  Don't have sufficient control
     * over rasterization to pull it off in-place.  Punt on these for
     * now.