commit 13b708f2ca0607b1334c88ef3f77d89b7f8acbb4
author Lingfeng Yang <lfy@google.com> Wed Mar 21 12:14:10 2018 -0700
committer Commit Bot <commit-bot@chromium.org> Tue Mar 27 16:45:28 2018 +0000
tree 76c4ca24a225edd15c1f063deb67371c9edd2491
parent 7a06ac1bbe34785c3a0bdfff824a3e360828ca9d

GLES1: glAlphaFunc

BUG=angleproject:2306

Change-Id: I0bf229d3ab8a4a1217c12b434dcd8fa67d7cbadc
Reviewed-on: https://chromium-review.googlesource.com/973897
Commit-Queue: Lingfeng Yang <lfy@google.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>

src/libANGLE/Context.cpp

diff --git a/src/libANGLE/Context.cpp b/src/libANGLE/Context.cpp
index 5304421..cba6b77 100644
--- a/src/libANGLE/Context.cpp
+++ b/src/libANGLE/Context.cpp
@@ -6373,6 +6373,21 @@
         return true;
     }
 
+    if (getClientVersion() < Version(2, 0))
+    {
+        switch (pname)
+        {
+            case GL_ALPHA_TEST_FUNC:
+                *type      = GL_INT;
+                *numParams = 1;
+                return true;
+            case GL_ALPHA_TEST_REF:
+                *type      = GL_FLOAT;
+                *numParams = 1;
+                return true;
+        }
+    }
+
     if (getClientVersion() < Version(3, 0))
     {
         return false;