Cc: "11.0 10.6" <mesa-sta...@lists.freedesktop.org>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=91719
---
src/mesa/drivers/dri/i965/brw_vec4.cpp | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/src/mesa/drivers/dri/i965/brw_vec4.cpp
b/src/mesa/drivers/dri/i965/brw_vec4.cpp
index 78ee8fe..01c1259 100644
--- a/src/mesa/drivers/dri/i965/brw_vec4.cpp
+++ b/src/mesa/drivers/dri/i965/brw_vec4.cpp
@@ -953,6 +953,13 @@ vec4_instruction::can_reswizzle(int dst_writemask,
if (mlen > 0)
return false;
+ /* We can't use swizzles on the accumulator and that's really the only
+ * HW_REG we would care to reswizzle so just dissalow them all.
+ */
+ for (int i = 0; i < 3; i++)
+ if (src[i].file == HW_REG)
+ return false;
+
return true;
}
--
2.5.0.400.gff86faf
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