[PATCH i-g-t] lib/rendercopy: Fix Xe2 pixel shader

[Zbigniew Kempczyński]

On Xe2 start and coefficient for barycentric positions are passed
in different location of grf register (r6). I wasn't able to find
this information explicitly in the documentation so I've dumped
all registers involved in the operation and deduce r6 values
meaning. This means I may be wrong but tests which are previously
failing on render-copy now are working fine.

Signed-off-by: Zbigniew Kempczyński <zbigniew.kempczynski at intel.com>
Cc: Juha-Pekka Heikkila <juhapekka.heikkila at gmail.com>
Cc: Swati Sharma <swati2.sharma at intel.com>
---
 lib/i915/shaders/ps/gen20_render_copy.asm | 4 ++--
 lib/rendercopy_gen9.c                     | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/lib/i915/shaders/ps/gen20_render_copy.asm b/lib/i915/shaders/ps/gen20_render_copy.asm
index 330417966d..48057f441e 100644
--- a/lib/i915/shaders/ps/gen20_render_copy.asm
+++ b/lib/i915/shaders/ps/gen20_render_copy.asm
@@ -1,7 +1,7 @@
 L0:
-(W)     mad (16|M0)              acc0.0<1>:f   r6.3<0;0>:f      r1.0<1;1>:f       r6.0<0>:f
+(W)     mad (16|M0)              acc0.0<1>:f   r6.0<0;0>:f      r1.0<1;1>:f       r6.6<0>:f
 (W)     mad (16|M0)              r113.0<1>:f   acc0.0<1;1>:f    r1.0<1;1>:f       r6.1<0>:f
-(W)     mad (16|M0)              acc0.0<1>:f   r6.7<0;0>:f      r1.0<1;1>:f       r6.4<0>:f
+(W)     mad (16|M0)              acc0.0<1>:f   r6.3<0;0>:f      r1.0<1;1>:f       r6.4<0>:f
 (W)     mad (16|M0)              r114.0<1>:f   acc0.0<1;1>:f    r2.0<1;1>:f       r6.5<0>:f
 (W)     send.smpl (16|M0)        r12      r113  null:0  0x0            0x04420001           {F at 1,$0} // wr:2+0, rd:4; simd16 sample:u+v+r+ai+mlod using sampler index 0
 (W)     send.rc (16|M0)          null     r12   null:0  0x0            0x08031400           {EOT,$0} // wr:4+0, rd:0; full-precision render target write SIMD16; last render target to surface 0
diff --git a/lib/rendercopy_gen9.c b/lib/rendercopy_gen9.c
index a4220d78da..dd5f1dd448 100644
--- a/lib/rendercopy_gen9.c
+++ b/lib/rendercopy_gen9.c
@@ -138,9 +138,9 @@ static const uint32_t gen12p71_render_copy[][4] = {
 };
 
 static const uint32_t xe2_render_copy[][4] = {
-	{ 0x8010005b, 0x200002a0, 0x020a0634, 0x06040105 },
+	{ 0x8010005b, 0x200002a0, 0x020a0604, 0x06640105 },
 	{ 0x8010005b, 0x710402a8, 0x020a2001, 0x06140105 },
-	{ 0x8010005b, 0x200002a0, 0x020a0674, 0x06440105 },
+	{ 0x8010005b, 0x200002a0, 0x020a0634, 0x06440105 },
 	{ 0x8010005b, 0x720402a8, 0x020a2001, 0x06540205 },
 	{ 0x80122031, 0x0c240000, 0x20027114, 0x00800000 },
 	{ 0x8010c031, 0x00000004, 0x58000c24, 0x00c40000 },
-- 
2.34.1