1 files changed, 76 insertions, 0 deletions
diff --git a/gfx/angle/checkout/src/libANGLE/Platform.cpp b/gfx/angle/checkout/src/libANGLE/Platform.cpp
new file mode 100644
index 0000000000..d798fd4e86
--- /dev/null
+++ b/gfx/angle/checkout/src/libANGLE/Platform.cpp
@@ -0,0 +1,76 @@
+//
+// Copyright 2015 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+
+// Platform.cpp: Implementation methods for angle::Platform.
+
+#include <platform/PlatformMethods.h>
+
+#include <cstring>
+
+#include "common/debug.h"
+
+namespace
+{
+// TODO(jmadill): Make methods owned by egl::Display.
+angle::PlatformMethods &PlatformMethods()
+{
+    static angle::PlatformMethods platformMethods;
+    return platformMethods;
+}
+}  // anonymous namespace
+
+angle::PlatformMethods *ANGLEPlatformCurrent()
+{
+    return &PlatformMethods();
+}
+
+bool ANGLE_APIENTRY ANGLEGetDisplayPlatform(angle::EGLDisplayType display,
+                                            const char *const methodNames[],
+                                            unsigned int methodNameCount,
+                                            void *context,
+                                            void *platformMethods)
+{
+    angle::PlatformMethods **platformMethodsOut =
+        reinterpret_cast<angle::PlatformMethods **>(platformMethods);
+
+    // We allow for a lower input count of impl platform methods if the subset is correct.
+    if (methodNameCount > angle::g_NumPlatformMethods)
+    {
+        ERR() << "Invalid platform method count: " << methodNameCount << ", expected "
+              << angle::g_NumPlatformMethods << ".";
+        return false;
+    }
+
+    for (unsigned int nameIndex = 0; nameIndex < methodNameCount; ++nameIndex)
+    {
+        const char *expectedName = angle::g_PlatformMethodNames[nameIndex];
+        const char *actualName   = methodNames[nameIndex];
+
+        // Skip deprecated methods.  The names of these methods start with |placeholder|.
+        constexpr char kPlaceholder[] = "placeholder";
+        if (strncmp(expectedName, kPlaceholder, sizeof(kPlaceholder) - 1) == 0)
+        {
+            continue;
+        }
+        if (strcmp(expectedName, actualName) != 0)
+        {
+            ERR() << "Invalid platform method name: " << actualName << ", expected " << expectedName
+                  << ".";
+            return false;
+        }
+    }
+
+    // TODO(jmadill): Store platform methods in display.
+    PlatformMethods().context = context;
+    *platformMethodsOut       = &PlatformMethods();
+    return true;
+}
+
+void ANGLE_APIENTRY ANGLEResetDisplayPlatform(angle::EGLDisplayType display)
+{
+    // TODO(jmadill): Store platform methods in display.
+    PlatformMethods() = angle::PlatformMethods();
+}