intel: Respect src pitch in _mesa_copy_rect().

If a non-zero src_y was used, this would break piglit
depth-level-clamp.

diff --git a/src/mesa/drivers/dri/intel/intel_regions.c b/src/mesa/drivers/dri/intel/intel_regions.c
index 27e454d2942beaa686ab03cc088d4dcbe0643e2a..1172de90b1385776fd188274ea650d225df91c5d 100644 (file)
--- a/src/mesa/drivers/dri/intel/intel_regions.c
+++ b/src/mesa/drivers/dri/intel/intel_regions.c
@@ -307,7 +307,7 @@ _mesa_copy_rect(GLubyte * dst,
    dst += dst_x * cpp;
    src += src_x * cpp;
    dst += dst_y * dst_pitch;
-   src += src_y * dst_pitch;
+   src += src_y * src_pitch;
    width *= cpp;
 
    if (width == dst_pitch && width == src_pitch)