commit ea7a21219bd211e0f37dd1b74e06cd667c3a812d
author Erik Dahlström <ed@opera.com> Mon Nov 17 16:15:57 2014 +0100
committer Jamie Madill <jmadill@chromium.org> Wed Dec 03 16:32:39 2014 +0000
tree 4cf14f132ec7640898d59578f9e397fcab843208
parent 870352a1daf0465bf024452848e265b74c49e826

Add GLSL/ESSL validator/translator support for GL_EXT_shader_framebuffer_fetch.

BUG=angle:834

Change-Id: I2d4e25909a8e1266b9bb7f1d4421324143157c8a
Reviewed-on: https://chromium-review.googlesource.com/231032
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Tested-by: Erik Dahlström <ed@opera.com>

src/compiler/translator/VariableInfo.cpp

diff --git a/src/compiler/translator/VariableInfo.cpp b/src/compiler/translator/VariableInfo.cpp
index d8e1378..67b7c8c 100644
--- a/src/compiler/translator/VariableInfo.cpp
+++ b/src/compiler/translator/VariableInfo.cpp
@@ -144,6 +144,7 @@
       mFragCoordAdded(false),
       mPositionAdded(false),
       mPointSizeAdded(false),
+      mLastFragDataAdded(false),
       mHashFunction(hashFunction),
       mSymbolTable(symbolTable)
 {
@@ -281,6 +282,22 @@
                 mPointSizeAdded = true;
             }
             return;
+          case EvqLastFragData:
+            if (!mLastFragDataAdded)
+            {
+                Varying info;
+                const char kName[] = "gl_LastFragData";
+                info.name = kName;
+                info.mappedName = kName;
+                info.type = GL_FLOAT_VEC4;
+                info.arraySize = static_cast<const TVariable*>(mSymbolTable.findBuiltIn("gl_MaxDrawBuffers", 100))->getConstPointer()->getIConst();
+                info.precision = GL_MEDIUM_FLOAT;  // Defined by spec.
+                info.staticUse = true;
+                info.isInvariant = mSymbolTable.isVaryingInvariant(kName);
+                mVaryings->push_back(info);
+                mLastFragDataAdded = true;
+            }
+            return;
           default:
             break;
         }