commit e8ef2bc4bd019fd6080db5a1a5f0dd18bc0ccd25
author Jiawei Shao <jiawei.shao@intel.com> Tue Aug 29 13:38:57 2017 +0800
committer Commit Bot <commit-bot@chromium.org> Wed Aug 30 08:25:58 2017 +0000
tree 49e40f1317788b7000e871f647a13f302e5a4fc6
parent 7c2e6a96a9d20a4f325fbbd0e044131bef7e1f4a

Add compile error on using inputs with interpolation qualifier as l-value

This patch intends to fix a compile error in ANGLE GLSL compiler when
parsing an expression with inputs which has interpolation qualifiers
('flat', 'smooth' and 'centroid').

The compiler should report a compile error when a shader input with
interpolation qualifier is used as a l-value.

BUG=angleproject:2140
TEST=angle_unittests

Change-Id: I7c059d53bf001ac31d34519a98e5289797833ce7
Reviewed-on: https://chromium-review.googlesource.com/640075
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>

src/compiler/translator/ParseContext.cpp

diff --git a/src/compiler/translator/ParseContext.cpp b/src/compiler/translator/ParseContext.cpp
index 23f4a3a..4216a71 100644
--- a/src/compiler/translator/ParseContext.cpp
+++ b/src/compiler/translator/ParseContext.cpp
@@ -474,9 +474,10 @@
             message = "can't modify an attribute";
             break;
         case EvqFragmentIn:
-            message = "can't modify an input";
-            break;
         case EvqVertexIn:
+        case EvqFlatIn:
+        case EvqSmoothIn:
+        case EvqCentroidIn:
             message = "can't modify an input";
             break;
         case EvqUniform: