Shader and Compiler track uses of gl_FragCoord and gl_FragData and MRT extension usage.

TRAC #22668

Signed-off-by: Jamie Madill
Signed-off-by: Shannon Woods
Author: Geoff Lang

git-svn-id: https://angleproject.googlecode.com/svn/branches/es3proto@2084 736b8ea6-26fd-11df-bfd4-992fa37f6226
diff --git a/src/libGLESv2/Shader.cpp b/src/libGLESv2/Shader.cpp
index 1b07d91..9f30641 100644
--- a/src/libGLESv2/Shader.cpp
+++ b/src/libGLESv2/Shader.cpp
@@ -297,6 +297,9 @@
             input = strstr(input, ";") + 2;
         }
 
+        mUsesMultipleRenderTargets = strstr(mHlsl, "GL_USES_MRT") != NULL;
+        mUsesFragColor = strstr(mHlsl, "GL_USES_FRAG_COLOR") != NULL;
+        mUsesFragData = strstr(mHlsl, "GL_USES_FRAG_DATA") != NULL;
         mUsesFragCoord = strstr(mHlsl, "GL_USES_FRAG_COORD") != NULL;
         mUsesFrontFacing = strstr(mHlsl, "GL_USES_FRONT_FACING") != NULL;
         mUsesPointSize = strstr(mHlsl, "GL_USES_POINT_SIZE") != NULL;
@@ -325,6 +328,9 @@
     // set by parseVaryings
     mVaryings.clear();
 
+    mUsesMultipleRenderTargets = false;
+    mUsesFragColor = false;
+    mUsesFragData = false;
     mUsesFragCoord = false;
     mUsesFrontFacing = false;
     mUsesPointSize = false;