commit 5f0246ca6d27cda665db7417653220e204b38803
author Kimmo Kinnunen <kkinnunen@nvidia.com> Wed Jul 22 10:30:35 2015 +0300
committer Geoff Lang <geofflang@chromium.org> Tue Sep 29 18:57:23 2015 +0000
tree e6083a7bd357c9495a848d18c9ca74cacdbe8aea
parent ddf4d392185e0409b8836fd2d54ad921154213db

Implement gl_FragDepth for GLES SL 3.0

Makes it an error to access gl_FragDepthEXT  in #version 300 es shader.

TODO:
Lacks the feature to make "#extension GL_EXT_frag_depth : require" an
error for #version 300 es.

Reland of: https://chromium-review.googlesource.com/#/c/287570

BUG=angleproject:1102
TEST=angle_unittest

Change-Id: I064d918d65f37539cb1e14f12173ca5591a4ea3f
Reviewed-on: https://chromium-review.googlesource.com/301711
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Tested-by: Geoff Lang <geofflang@chromium.org>

src/compiler/translator/Initialize.cpp

diff --git a/src/compiler/translator/Initialize.cpp b/src/compiler/translator/Initialize.cpp
index a5e51dc..2f51aad 100644
--- a/src/compiler/translator/Initialize.cpp
+++ b/src/compiler/translator/Initialize.cpp
@@ -523,10 +523,18 @@
 
             if (resources.EXT_frag_depth)
             {
-                symbolTable.insert(ESSL1_BUILTINS, "GL_EXT_frag_depth", new TVariable(NewPoolTString("gl_FragDepthEXT"),
-                    TType(EbtFloat, resources.FragmentPrecisionHigh ? EbpHigh : EbpMedium, EvqFragDepth, 1)));
+                symbolTable.insert(
+                    ESSL1_BUILTINS, "GL_EXT_frag_depth",
+                    new TVariable(
+                        NewPoolTString("gl_FragDepthEXT"),
+                        TType(EbtFloat, resources.FragmentPrecisionHigh ? EbpHigh : EbpMedium,
+                              EvqFragDepthEXT, 1)));
             }
 
+            symbolTable.insert(ESSL3_BUILTINS,
+                               new TVariable(NewPoolTString("gl_FragDepth"),
+                                             TType(EbtFloat, EbpHigh, EvqFragDepth, 1)));
+
             if (resources.EXT_shader_framebuffer_fetch || resources.NV_shader_framebuffer_fetch)
             {
                 TType lastFragData(EbtFloat, EbpMedium, EvqLastFragData, 4, 1, true);