diff options
Diffstat (limited to 'tools/sk_app/ios/GLWindowContext_ios.cpp')
-rw-r--r-- | tools/sk_app/ios/GLWindowContext_ios.cpp | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/tools/sk_app/ios/GLWindowContext_ios.cpp b/tools/sk_app/ios/GLWindowContext_ios.cpp new file mode 100644 index 0000000000..30bacf5cea --- /dev/null +++ b/tools/sk_app/ios/GLWindowContext_ios.cpp @@ -0,0 +1,109 @@ + +/* + * Copyright 2017 Google Inc. + * + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +#include <OpenGLES/ES2/gl.h> +#include "../GLWindowContext.h" +#include "SDL.h" +#include "WindowContextFactory_ios.h" +#include "gl/GrGLInterface.h" + +using sk_app::DisplayParams; +using sk_app::window_context_factory::IOSWindowInfo; +using sk_app::GLWindowContext; + +namespace { + +class GLWindowContext_ios : public GLWindowContext { +public: + GLWindowContext_ios(const IOSWindowInfo&, const DisplayParams&); + + ~GLWindowContext_ios() override; + + void onSwapBuffers() override; + + sk_sp<const GrGLInterface> onInitializeContext() override; + void onDestroyContext() override; + +private: + SDL_Window* fWindow; + SDL_GLContext fGLContext; + + typedef GLWindowContext INHERITED; +}; + +GLWindowContext_ios::GLWindowContext_ios(const IOSWindowInfo& info, const DisplayParams& params) + : INHERITED(params) + , fWindow(info.fWindow) + , fGLContext(nullptr) { + + // any config code here (particularly for msaa)? + + this->initializeContext(); +} + +GLWindowContext_ios::~GLWindowContext_ios() { + this->destroyContext(); +} + +sk_sp<const GrGLInterface> GLWindowContext_ios::onInitializeContext() { + SkASSERT(fWindow); + + fGLContext = SDL_GL_CreateContext(fWindow); + if (!fGLContext) { + SkDebugf("%s\n", SDL_GetError()); + return nullptr; + } + + if (0 == SDL_GL_MakeCurrent(fWindow, fGLContext)) { + glClearStencil(0); + glClearColor(0, 0, 0, 0); + glStencilMask(0xffffffff); + glClear(GL_STENCIL_BUFFER_BIT | GL_COLOR_BUFFER_BIT); + + SDL_GL_GetAttribute(SDL_GL_STENCIL_SIZE, &fStencilBits); + SDL_GL_GetAttribute(SDL_GL_MULTISAMPLESAMPLES, &fSampleCount); + + SDL_GL_GetDrawableSize(fWindow, &fWidth, &fHeight); + glViewport(0, 0, fWidth, fHeight); + } else { + SkDebugf("MakeCurrent failed: %s\n", SDL_GetError()); + } + return sk_sp<const GrGLInterface>(GrGLCreateNativeInterface()); +} + +void GLWindowContext_ios::onDestroyContext() { + if (!fWindow || !fGLContext) { + return; + } + SDL_GL_DeleteContext(fGLContext); + fGLContext = nullptr; +} + + +void GLWindowContext_ios::onSwapBuffers() { + if (fWindow && fGLContext) { + SDL_GL_SwapWindow(fWindow); + } +} + +} // anonymous namespace + +namespace sk_app { +namespace window_context_factory { + +WindowContext* NewGLForIOS(const IOSWindowInfo& info, const DisplayParams& params) { + WindowContext* ctx = new GLWindowContext_ios(info, params); + if (!ctx->isValid()) { + delete ctx; + return nullptr; + } + return ctx; +} + +} // namespace window_context_factory +} // namespace sk_app |