commit b3dced293da6ec6fd02b48cddcbec67b085266a0
author Gregoire Payen de La Garanderie <Gregory.Payen@imgtec.com> Mon Jan 12 14:54:55 2015 +0000
committer Jamie Madill <jmadill@chromium.org> Mon Feb 09 14:41:17 2015 +0000
tree 4d5f81397106e3237c32bee60e3800ffec5dba8e
parent c38fa8a5f4e8c180c68fbe7304f0c602be04dfca

Implementing gl_InstanceID in the HLSL compiler.

Fixes:
dEQP-GLES3.functional.instanced.draw_arrays_instanced.instance_id
dEQP-GLES3.functional.instanced.draw_arrays_instanced.mixed
dEQP-GLES3.functional.instanced.draw_elements_instanced.instance_id
dEQP-GLES3.functional.instanced.draw_elements_instanced.mixed

BUG=angle:601

Change-Id: I6e120eebc90d00e025fc58f096064e6ed1da826b
Reviewed-on: https://chromium-review.googlesource.com/246911
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Tested-by: Gregoire Payen de La Garanderie <Gregory.Payen@imgtec.com>
Reviewed-by: Zhenyao Mo <zmo@chromium.org>

src/compiler/translator/VariableInfo.cpp

diff --git a/src/compiler/translator/VariableInfo.cpp b/src/compiler/translator/VariableInfo.cpp
index 67b7c8c..b9cf3a4 100644
--- a/src/compiler/translator/VariableInfo.cpp
+++ b/src/compiler/translator/VariableInfo.cpp
@@ -142,6 +142,7 @@
       mPointCoordAdded(false),
       mFrontFacingAdded(false),
       mFragCoordAdded(false),
+      mInstanceIDAdded(false),
       mPositionAdded(false),
       mPointSizeAdded(false),
       mLastFragDataAdded(false),
@@ -250,6 +251,22 @@
                 mPointCoordAdded = true;
             }
             return;
+          case EvqInstanceID:
+            if (!mInstanceIDAdded)
+            {
+                Attribute info;
+                const char kName[] = "gl_InstanceID";
+                info.name = kName;
+                info.mappedName = kName;
+                info.type = GL_INT;
+                info.arraySize = 0;
+                info.precision = GL_HIGH_INT;  // Defined by spec.
+                info.staticUse = true;
+                info.location = -1;
+                mAttribs->push_back(info);
+                mInstanceIDAdded = true;
+            }
+            return;
           case EvqPosition:
             if (!mPositionAdded)
             {