OpenGL的绘制命令都是作用在当前的Context上,Current Context是一个线程私有(thread-local)的变量,也就是说如果我们在线程中绘制,那么需要为每个线程指定一个Current Context的,而且多个线程不能同时指定同一个Context为Current Context。 参考资料
{ std::cout << "Failed to create GLFW window" << std::endl; glfwTerminate(); return -1; } glfwMakeContextCurrent(window); glfwSetFramebufferSizeCallback(window, framebuffer_size_callback); // glad: load all OpenGL function pointers // --- if (!gladLoadGLLoader((GLADloadproc)glfwGet...
I've been searching all over for a solution to this problem and as best I can tell I might need to be setting up an EGLContext somewhere before setting my renderer. However, I don't see anything in the API demos about this, and the only information I can find online was written befo...
{ std::cout << "Failed to create GLFW window" << std::endl; glfwTerminate(); return -1; } glfwMakeContextCurrent(window); glfwSetFramebufferSizeCallback(window, framebuffer_size_callback); // glad: load all OpenGL function pointers 初始化glad // --- if (!gladLoadGLLoader((GLADload...
I'm combing through the rest of the code to see if I did anything else wrong, but the context error in the logs makes me worry that the problem is related to threading / hardware access and not the GL code itself. The OpenGL code works just fine when I run as a stand-alone ...
ProcessInitializer.sInstance.init(context, mNativeProxy);… } 复制代码 之前分析过,nCreateRootRenderNode 为ViewRootimpl创建一个root RenderNode,UI线程通过递归mRootNode,可以构建ViewTree所有的OpenGL绘制命令及数据,nCreateProxy会为当前widow创建一个ThreadProxy ,ThreadProxy则主要用来向RenderThread线程提交一些OpenGL...
QOpenGLContext :: swapBuffers(): 交换渲染表面的前后缓冲区。调用此命令以完成OpenGL渲染的框架,并确保在发出任何其他OpenGL命令(例如,作为新框架的一部分)之前再次调用makeCurrent()。 更新窗口缓冲区后,无需重新渲染即可将窗口移动到屏幕上的任何位置,甚至最小化。至少在我们开始处理场景中的动画之前,这是正确的。
绘图上下文相关函数：wglCreateContext()、wglDeleteContext()、wglGetCurrentContent()、wglGetCurrentDC()、wglDeleteContent()文字和文本处理函数：wglUseFontBitmaps()、wglUseFontOutlines()覆盖层、地层和主平面层处理函数：wglCopyContext()、wglCreateLayerPlane()、wglDescribeLayerPlane()、wglReakizeLayerPlatte()其他函数...
procedure TForm1.FormDestroy(Sender: TObject); var i: Integer; begin for i := 0 to 4 - 1 do begin wglMakeCurrent(FDC[i], FHRC[i]); wglDeleteContext(FHRC[i]); ReleaseDC(fhwnd[i], FDC[i]); end; end; 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 效果如下:...
glfwInit())// 初始化库 return -1; window = glfwCreateWindow(SCR_WIDTH, SCR_HEIGHT, "Hello World", NULL, NULL); if (window == NULL) { printf("Open window failed."); glfwTerminate(); return -1; } glfwMakeContextCurrent(window); glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_...