From: Ian Romanick <ian.d.roman...@intel.com>

Fixes i965 piglit vs-varying-array-mat[234]-row-rd.
---
 src/mesa/drivers/dri/i965/brw_vs_emit.c |   17 +++++++++++++++--
 1 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/src/mesa/drivers/dri/i965/brw_vs_emit.c 
b/src/mesa/drivers/dri/i965/brw_vs_emit.c
index 5ef8b07..e226d84 100644
--- a/src/mesa/drivers/dri/i965/brw_vs_emit.c
+++ b/src/mesa/drivers/dri/i965/brw_vs_emit.c
@@ -1980,9 +1980,22 @@ void brw_vs_emit(struct brw_vs_compile *c )
              const struct prog_src_register *src = &inst->SrcReg[i];
              index = src->Index;
              file = src->File; 
-             if (file == PROGRAM_OUTPUT && c->output_regs[index].used_in_src)
+             if (file == PROGRAM_OUTPUT && c->output_regs[index].used_in_src) {
+                /* Can't just make get_arg "do the right thing" here because
+                 * other callers of get_arg and get_src_reg don't expect any
+                 * special behavior for the c->output_regs[index].used_in_src
+                 * case.
+                 */
                  args[i] = c->output_regs[index].reg;
-             else
+                 args[i].dw1.bits.swizzle =
+                    BRW_SWIZZLE4(GET_SWZ(src->Swizzle, 0),
+                                 GET_SWZ(src->Swizzle, 1),
+                                 GET_SWZ(src->Swizzle, 2),
+                                 GET_SWZ(src->Swizzle, 3));
+
+                 /* Note this is ok for non-swizzle ARB_vp instructions */
+                 args[i].negate = src->Negate ? 1 : 0;
+             } else
                   args[i] = get_arg(c, inst, i);
          }
 
-- 
1.7.4.4

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