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/validationES1.cpp

diff --git a/src/libANGLE/validationES1.cpp b/src/libANGLE/validationES1.cpp
index 8f59649..60a34be 100644
--- a/src/libANGLE/validationES1.cpp
+++ b/src/libANGLE/validationES1.cpp
@@ -9,20 +9,53 @@
 #include "libANGLE/validationES1.h"
 
 #include "common/debug.h"
+#include "libANGLE/Context.h"
+#include "libANGLE/ErrorStrings.h"
+
+#define ANGLE_VALIDATE_IS_GLES1(context)                              \
+    if (context->getClientMajorVersion() > 1)                         \
+    {                                                                 \
+        ANGLE_VALIDATION_ERR(context, InvalidOperation(), GLES1Only); \
+        return false;                                                 \
+    }
+
+namespace
+{
+
+bool ValidateAlphaFuncCommon(gl::Context *context, gl::AlphaTestFunc func)
+{
+    switch (func)
+    {
+        case gl::AlphaTestFunc::AlwaysPass:
+        case gl::AlphaTestFunc::Equal:
+        case gl::AlphaTestFunc::Gequal:
+        case gl::AlphaTestFunc::Greater:
+        case gl::AlphaTestFunc::Lequal:
+        case gl::AlphaTestFunc::Less:
+        case gl::AlphaTestFunc::Never:
+        case gl::AlphaTestFunc::NotEqual:
+            return true;
+        default:
+            context->handleError(gl::InvalidEnum() << gl::kErrorEnumNotSupported);
+            return false;
+    }
+}
+
+}  // anonymous namespace
 
 namespace gl
 {
 
-bool ValidateAlphaFunc(Context *context, GLenum func, GLfloat ref)
+bool ValidateAlphaFunc(Context *context, AlphaTestFunc func, GLfloat ref)
 {
-    UNIMPLEMENTED();
-    return true;
+    ANGLE_VALIDATE_IS_GLES1(context);
+    return ValidateAlphaFuncCommon(context, func);
 }
 
-bool ValidateAlphaFuncx(Context *context, GLenum func, GLfixed ref)
+bool ValidateAlphaFuncx(Context *context, AlphaTestFunc func, GLfixed ref)
 {
-    UNIMPLEMENTED();
-    return true;
+    ANGLE_VALIDATE_IS_GLES1(context);
+    return ValidateAlphaFuncCommon(context, func);
 }
 
 bool ValidateClearColorx(Context *context, GLfixed red, GLfixed green, GLfixed blue, GLfixed alpha)