Refactored OpenGL embedder that works on Android, Mac or Linux.

runtime/embedders/openglui/common/gl_graphics_handler.h

+// Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+#ifndef EMBEDDERS_OPENGLUI_COMMON_GL_GRAPHICS_HANDLER_H_
+#define EMBEDDERS_OPENGLUI_COMMON_GL_GRAPHICS_HANDLER_H_
+
+#include "embedders/openglui/common/graphics_handler.h"
+#include "embedders/openglui/common/opengl.h"
+#include "embedders/openglui/common/timer.h"
+
+class GLGraphicsHandler : public GraphicsHandler {
+  public:
+    GLGraphicsHandler()
+      : GraphicsHandler() {
+    }
+
+    virtual int32_t Start() = 0;
+    virtual void Stop() = 0;
+
+    void SwapBuffers() {
+      GLSwapBuffers();
+    }
+
+    virtual int32_t Update() {
+      SwapBuffers();
+      return 0;
+    }
+
+    void SetViewport(int left, int top, int width, int height);
+    int BuildProgram(const char* vertexShaderSource,
+                     const char* fragmentShaderSource) const;
+    int BuildShader(const char* source, GLenum shaderType) const;
+
+    virtual ~GLGraphicsHandler() {
+    }
+};
+
+#endif  // EMBEDDERS_OPENGLUI_COMMON_GL_GRAPHICS_HANDLER_H_
+