| |
| /* |
| * 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 "tools/sk_app/GLWindowContext.h" |
| #include "SDL.h" |
| #include "include/gpu/gl/GrGLInterface.h" |
| #include "tools/sk_app/ios/WindowContextFactory_ios.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(info.fGLContext) { |
| |
| // any config code here (particularly for msaa)? |
| |
| this->initializeContext(); |
| } |
| |
| GLWindowContext_ios::~GLWindowContext_ios() { |
| this->destroyContext(); |
| } |
| |
| sk_sp<const GrGLInterface> GLWindowContext_ios::onInitializeContext() { |
| SkASSERT(fWindow); |
| SkASSERT(fGLContext); |
| |
| 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); |
| fSampleCount = SkTMax(fSampleCount, 1); |
| |
| SDL_GL_GetDrawableSize(fWindow, &fWidth, &fHeight); |
| glViewport(0, 0, fWidth, fHeight); |
| } else { |
| SkDebugf("MakeCurrent failed: %s\n", SDL_GetError()); |
| } |
| return GrGLMakeNativeInterface(); |
| } |
| |
| 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 |