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111 lines
3.7 KiB
111 lines
3.7 KiB
4 months ago
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/*
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* Copyright 2013 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef GLTestContext_DEFINED
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#define GLTestContext_DEFINED
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#include "include/gpu/gl/GrGLInterface.h"
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#include "src/gpu/gl/GrGLUtil.h"
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#include "tools/gpu/TestContext.h"
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namespace sk_gpu_test {
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/**
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* An offscreen OpenGL context. Provides a GrGLInterface struct of function pointers for the context
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* This class is intended for Skia's internal testing needs and not for general use.
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* When SK_GL is not defined the GrGLInterface will always be nullptr.
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*/
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class GLTestContext : public TestContext {
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public:
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~GLTestContext() override;
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GrBackendApi backend() override { return GrBackendApi::kOpenGL; }
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/** Does this represent a successfully created GL context? */
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bool isValid() const;
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const GrGLInterface* gl() const { return fGLInterface.get(); }
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/** Used for testing EGLImage integration. Take a GL_TEXTURE_2D and wraps it in an EGL Image */
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virtual GrEGLImage texture2DToEGLImage(GrGLuint /*texID*/) const { return nullptr; }
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virtual void destroyEGLImage(GrEGLImage) const { }
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/**
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* Used for testing EGLImage integration. Takes a EGLImage and wraps it in a
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* GL_TEXTURE_EXTERNAL_OES.
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*/
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virtual GrGLuint eglImageToExternalTexture(GrEGLImage) const { return 0; }
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void testAbandon() override;
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/** Wait until all GPU work is finished. */
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void finish() override;
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void overrideVersion(const char* version, const char* shadingLanguageVersion);
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/**
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* Creates a new GL context of the same type and makes the returned context current
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* (if not null).
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*/
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virtual std::unique_ptr<GLTestContext> makeNew() const { return nullptr; }
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template<typename Ret, typename... Args>
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void getGLProcAddress(Ret(GR_GL_FUNCTION_TYPE** out)(Args...),
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const char* name, const char* ext = nullptr) const {
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using Proc = Ret(GR_GL_FUNCTION_TYPE*)(Args...);
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if (!SkStrStartsWith(name, "gl")) {
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SK_ABORT("getGLProcAddress: proc name must have 'gl' prefix");
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*out = nullptr;
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} else if (ext) {
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SkString fullname(name);
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fullname.append(ext);
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*out = reinterpret_cast<Proc>(this->onPlatformGetProcAddress(fullname.c_str()));
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} else {
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*out = reinterpret_cast<Proc>(this->onPlatformGetProcAddress(name));
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}
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}
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sk_sp<GrDirectContext> makeContext(const GrContextOptions& options) override;
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protected:
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GLTestContext();
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/*
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* Methods that subclasses must call from their constructors and destructors.
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*/
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void init(sk_sp<const GrGLInterface>);
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void teardown() override;
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virtual GrGLFuncPtr onPlatformGetProcAddress(const char *) const = 0;
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private:
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/** Subclass provides the gl interface object if construction was successful. */
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sk_sp<const GrGLInterface> fOriginalGLInterface;
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/** The same as fOriginalGLInterface unless the version has been overridden. */
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sk_sp<const GrGLInterface> fGLInterface;
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#ifndef SK_GL
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bool fWasInitialized = false;
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#endif
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using INHERITED = TestContext;
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};
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/**
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* Creates platform-dependent GL context object. The shareContext parameter is in an optional
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* context with which to share display lists. This should be a pointer to an GLTestContext created
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* with SkCreatePlatformGLTestContext. NULL indicates that no sharing is to take place. Returns a
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* valid gl context object or NULL if such can not be created.
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*/
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GLTestContext* CreatePlatformGLTestContext(GrGLStandard forcedGpuAPI,
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GLTestContext *shareContext = nullptr);
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} // namespace sk_gpu_test
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#endif
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