| |
| /* |
| * Copyright 2016 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "../GLWindowContext.h" |
| #include "WindowContextFactory_unix.h" |
| |
| #include <GL/gl.h> |
| |
| using sk_app::window_context_factory::XlibWindowInfo; |
| using sk_app::DisplayParams; |
| using sk_app::GLWindowContext; |
| |
| namespace { |
| |
| class GLWindowContext_xlib : public GLWindowContext { |
| public: |
| GLWindowContext_xlib(const XlibWindowInfo&, const DisplayParams&); |
| ~GLWindowContext_xlib() override; |
| |
| void onSwapBuffers() override; |
| |
| void onDestroyContext() override; |
| |
| protected: |
| void onInitializeContext() override; |
| |
| private: |
| GLWindowContext_xlib(void*, const DisplayParams&); |
| |
| Display* fDisplay; |
| XWindow fWindow; |
| XVisualInfo* fVisualInfo; |
| GLXContext fGLContext; |
| }; |
| |
| GLWindowContext_xlib::GLWindowContext_xlib(const XlibWindowInfo& winInfo, const DisplayParams& params) |
| : GLWindowContext(params) |
| , fDisplay(winInfo.fDisplay) |
| , fWindow(winInfo.fWindow) |
| , fVisualInfo(winInfo.fVisualInfo) |
| , fGLContext() { |
| this->initializeContext(); |
| } |
| |
| void GLWindowContext_xlib::onInitializeContext() { |
| // any config code here (particularly for msaa)? |
| SkASSERT(fDisplay); |
| fGLContext = glXCreateContext(fDisplay, fVisualInfo, nullptr, GL_TRUE); |
| if (!fGLContext) { |
| return; |
| } |
| |
| if (glXMakeCurrent(fDisplay, fWindow, fGLContext)) { |
| glClearStencil(0); |
| glClearColor(0, 0, 0, 0); |
| glStencilMask(0xffffffff); |
| glClear(GL_STENCIL_BUFFER_BIT | GL_COLOR_BUFFER_BIT); |
| |
| int redBits, greenBits, blueBits; |
| glXGetConfig(fDisplay, fVisualInfo, GLX_RED_SIZE, &redBits); |
| glXGetConfig(fDisplay, fVisualInfo, GLX_GREEN_SIZE, &greenBits); |
| glXGetConfig(fDisplay, fVisualInfo, GLX_BLUE_SIZE, &blueBits); |
| fColorBits = redBits + greenBits + blueBits; |
| glXGetConfig(fDisplay, fVisualInfo, GLX_STENCIL_SIZE, &fStencilBits); |
| glXGetConfig(fDisplay, fVisualInfo, GLX_SAMPLES_ARB, &fSampleCount); |
| |
| XWindow root; |
| int x, y; |
| unsigned int border_width, depth; |
| XGetGeometry(fDisplay, fWindow, &root, &x, &y, |
| (unsigned int*)&fWidth, (unsigned int*)&fHeight, &border_width, &depth); |
| glViewport(0, 0, fWidth, fHeight); |
| } |
| } |
| |
| GLWindowContext_xlib::~GLWindowContext_xlib() { |
| this->destroyContext(); |
| } |
| |
| void GLWindowContext_xlib::onDestroyContext() { |
| if (!fDisplay || !fGLContext) { |
| return; |
| } |
| glXMakeCurrent(fDisplay, None, nullptr); |
| glXDestroyContext(fDisplay, fGLContext); |
| fGLContext = nullptr; |
| } |
| |
| void GLWindowContext_xlib::onSwapBuffers() { |
| if (fDisplay && fGLContext) { |
| glXSwapBuffers(fDisplay, fWindow); |
| } |
| } |
| |
| } // anonymous namespace |
| |
| namespace sk_app { |
| |
| namespace window_context_factory { |
| |
| WindowContext* NewGLForXlib(const XlibWindowInfo& winInfo, const DisplayParams& params) { |
| WindowContext* ctx = new GLWindowContext_xlib(winInfo, params); |
| if (!ctx->isValid()) { |
| delete ctx; |
| return nullptr; |
| } |
| return ctx; |
| } |
| |
| } // namespace window_context_factory |
| |
| } // namespace sk_app |