cleanup GLBenches

bench/GLBench.h

+/*
+ * Copyright 2015 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef GLBench_DEFINED
+#define GLBench_DEFINED
+
+#include "Benchmark.h"
+#include "SkCanvas.h"
+#include "SkImageEncoder.h"
+
+#if SK_SUPPORT_GPU
+#include "gl/GrGLFunctions.h"
+
+class GrGLContext;
+struct GrGLInterface;
+
+/*
+ * A virtual base class for microbenches which want to specifically test the performance of GL
+ */
+
+class GLBench : public Benchmark {
+public:
+    GLBench() {}
+
+protected:
+    const GrGLContext* getGLContext(SkCanvas*);
+    virtual const GrGLContext* onGetGLContext(const GrGLContext* ctx) { return ctx; }
+    void onPerCanvasPreDraw(SkCanvas* canvas) override;
+    virtual void setup(const GrGLContext*)=0;
+    void onPerCanvasPostDraw(SkCanvas* canvas) override;
+    virtual void teardown(const GrGLInterface*)=0;
+    void onDraw(const int loops, SkCanvas*) override;
+    virtual void glDraw(const int loops, const GrGLContext*)=0;
+    static GrGLuint CompileShader(const GrGLInterface*, const char* shaderSrc, GrGLenum type);
+    static GrGLuint CreateProgram(const GrGLInterface*, const char* vshader, const char* fshader);
+    static GrGLuint SetupFramebuffer(const GrGLInterface*, int screenWidth, int screenHeight);
+    static void DumpImage(const GrGLInterface* gl, uint32_t screenWidth, uint32_t screenHeight,
+                          const char* filename);
+
+
+private:
+    typedef Benchmark INHERITED;
+};
+
+
+#endif
+#endif