1 2 /* 3 * Copyright 2013 Google Inc. 4 * 5 * Use of this source code is governed by a BSD-style license that can be 6 * found in the LICENSE file. 7 */ 8 #ifndef GLTestContext_DEFINED 9 #define GLTestContext_DEFINED 10 11 #include "TestContext.h" 12 #include "gl/GrGLInterface.h" 13 14 namespace sk_gpu_test { 15 /** 16 * An offscreen OpenGL context. Provides a GrGLInterface struct of function pointers for the context 17 * This class is intended for Skia's internal testing needs and not for general use. 18 */ 19 class GLTestContext : public TestContext { 20 public: 21 ~GLTestContext() override; 22 23 virtual GrBackend backend() override { return kOpenGL_GrBackend; } 24 virtual GrBackendContext backendContext() override { 25 return reinterpret_cast<GrBackendContext>(fGL.get()); 26 } 27 28 bool isValid() const override { return SkToBool(this->gl()); } 29 30 const GrGLInterface *gl() const { return fGL.get(); } 31 32 /** Used for testing EGLImage integration. Take a GL_TEXTURE_2D and wraps it in an EGL Image */ 33 virtual GrEGLImage texture2DToEGLImage(GrGLuint /*texID*/) const { return 0; } 34 35 virtual void destroyEGLImage(GrEGLImage) const { } 36 37 /** Used for testing GL_TEXTURE_RECTANGLE integration. */ 38 GrGLint createTextureRectangle(int width, int height, GrGLenum internalFormat, 39 GrGLenum externalFormat, GrGLenum externalType, 40 GrGLvoid *data); 41 42 /** 43 * Used for testing EGLImage integration. Takes a EGLImage and wraps it in a 44 * GL_TEXTURE_EXTERNAL_OES. 45 */ 46 virtual GrGLuint eglImageToExternalTexture(GrEGLImage) const { return 0; } 47 48 void testAbandon() override; 49 50 /** Ensures all work is submitted to the GPU for execution. */ 51 void submit() override; 52 53 /** Wait until all GPU work is finished. */ 54 void finish() override; 55 56 /** 57 * Creates a new GL context of the same type and makes the returned context current 58 * (if not null). 59 */ 60 virtual std::unique_ptr<GLTestContext> makeNew() const { return nullptr; } 61 62 template<typename Ret, typename... Args> 63 void getGLProcAddress(Ret(GR_GL_FUNCTION_TYPE** out)(Args...), 64 const char* name, const char* ext = nullptr) const { 65 using Proc = Ret(GR_GL_FUNCTION_TYPE*)(Args...); 66 if (!SkStrStartsWith(name, "gl")) { 67 SkFAIL("getGLProcAddress: proc name must have 'gl' prefix"); 68 *out = nullptr; 69 } else if (ext) { 70 SkString fullname(name); 71 fullname.append(ext); 72 *out = reinterpret_cast<Proc>(this->onPlatformGetProcAddress(fullname.c_str())); 73 } else { 74 *out = reinterpret_cast<Proc>(this->onPlatformGetProcAddress(name)); 75 } 76 } 77 78 protected: 79 GLTestContext(); 80 81 /* 82 * Methods that sublcasses must call from their constructors and destructors. 83 */ 84 void init(const GrGLInterface *, std::unique_ptr<FenceSync> = nullptr); 85 86 void teardown() override; 87 88 virtual GrGLFuncPtr onPlatformGetProcAddress(const char *) const = 0; 89 90 private: 91 /** Subclass provides the gl interface object if construction was 92 * successful. */ 93 sk_sp<const GrGLInterface> fGL; 94 95 typedef TestContext INHERITED; 96 }; 97 98 /** 99 * Creates platform-dependent GL context object. The shareContext parameter is in an optional 100 * context with which to share display lists. This should be a pointer to an GLTestContext created 101 * with SkCreatePlatformGLTestContext. NULL indicates that no sharing is to take place. Returns a 102 * valid gl context object or NULL if such can not be created. 103 */ 104 GLTestContext* CreatePlatformGLTestContext(GrGLStandard forcedGpuAPI, 105 GLTestContext *shareContext = nullptr); 106 107 } // namespace sk_gpu_test 108 #endif 109
