commit 8225e73bb30f39848616d98ae837b12502861c71
author jchen10 <jie.a.chen@intel.com> Tue Nov 14 16:29:03 2017 +0800
committer Commit Bot <commit-bot@chromium.org> Wed Dec 13 16:03:49 2017 +0000
tree e54431a8db4c6ae5f7d462fa3c54a53e07522df1
parent ebe13bb1b964f7085b25d3b4615568edf3e840e0

Support struct varying for transform feedback

Capturing struct members is vague In ES 3.00. But the ES 3.10
explicitly says that base-level members of struct are feasible for
transform feedback capture. This implementation fills the gap.

TEST=angle_end2end_tests:TrasnformFeedbackTest*
BUG=angleproject:2241
Change-Id: Ibdf3ae6c2b8b28952e2f7fef1363545cbccad389
Reviewed-on: https://chromium-review.googlesource.com/768613
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>

src/libANGLE/Shader.cpp

diff --git a/src/libANGLE/Shader.cpp b/src/libANGLE/Shader.cpp
index 94c4f3c..50d8516 100644
--- a/src/libANGLE/Shader.cpp
+++ b/src/libANGLE/Shader.cpp
@@ -534,6 +534,12 @@
             {
                 return varying.mappedName;
             }
+            else if (varying.isStruct())
+            {
+                const auto *field = FindShaderVarField(varying, tfVaryingName);
+                ASSERT(field != nullptr && !field->isStruct() && !field->isArray());
+                return varying.mappedName + "." + field->mappedName;
+            }
         }
     }
     UNREACHABLE();