[Mesa-dev] [PATCH] i965: Fix isoline reads in scalar TES.

[Kenneth Graunke]

Isolines aren't reversed.  commit 5b2d8c2273c6f fixed this for the vec4
TES backend, but not the scalar one.

Found while debugging GL45-CTS.tessellation_shader.
tessellation_control_to_tessellation_evaluation.gl_tessLevel.

Signed-off-by: Kenneth Graunke <kenneth at whitecape.org>
Cc: mesa-stable at lists.freedesktop.org
---
 src/mesa/drivers/dri/i965/brw_fs_nir.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/mesa/drivers/dri/i965/brw_fs_nir.cpp b/src/mesa/drivers/dri/i965/brw_fs_nir.cpp
index 58191fc..6b832e0 100644
--- a/src/mesa/drivers/dri/i965/brw_fs_nir.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_nir.cpp
@@ -2746,7 +2746,7 @@ fs_visitor::nir_emit_tes_intrinsic(const fs_builder &bld,
          break;
       case BRW_TESS_DOMAIN_ISOLINE:
          for (unsigned i = 0; i < 2; i++)
-            bld.MOV(offset(dest, bld, i), component(fs_reg(ATTR, 0), 7 - i));
+            bld.MOV(offset(dest, bld, i), component(fs_reg(ATTR, 0), 6 + i));
          break;
       }
       break;
-- 
2.8.3