glew

I have a question about how to (correctly) use glewInit() . Assume I have an multiple-window application, should I call glewInit() exactly once at application (i.e., global) level? or call glewInit() for each window (i.e., each OpenGL rendering context)? Depending on the GLEW build being used the watertight method is to call glewInit after each and every context change ! With X11/GLX functions pointers are invariant. But in Windows OpenGL function pointers are specific to each context. Some builds of GLEW are multi context aware, while others are not. So to cover that case, technically you

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am trying to build an opengl project in Visual Studio 2012. I wanted to statically include glew library, so I built it from source and copied the generated glew32sd.lib to my lib directory. I gave this lib path to Visual Studio and put "glew32sd.lib" to my additional dependencies in VS. Now when I compile a sample code in main.cpp: #define GLEW_STATIC #include<GL/glew.h> int main(){ glewInit(); return 0; } I get the following error: 1> main.cpp 1>glew32sd.lib(glew.obj) : error LNK2019: unresolved external symbol __imp__glGetString@4

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I've been using OpenGL extensions on Windows the painful way . Is GLEW the easier way to go? How do I get started with it? 回答1: Yes, the OpenGL Extension Wrangler Library (GLEW) is a painless way to use OpenGL extensions on Windows. Here's how to get started on it: Identify the OpenGL extension and the extension APIs you wish to use. OpenGL extensions are listed in the OpenGL Extension Registry . Check if your graphic card supports the extensions you wish to use. Download and install the latest drivers and SDKs for your graphics card. Recent

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am trying to compile a relatively simple OpenGL program using MinGW on a Win 7 x64 system, and I keep getting undefined references to several of the GLEW functions. I have set the libraries to link to the programs, and have been looking around for any library I may be missing from my list, yet the output from the linker still looks like this: 16:35:50 **** Incremental Build of configuration Debug for project test **** Info: Internal Builder is used for build gcc -LD:/DEV/openGL/lib/x86 -LD:/DEV/x86/lib -o test.exe test.o -lfreeglut -lglaux

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Edit: I have in the meantime figured this out and written a detailed answer below. I just tried switching from the Express version of MSVC 10 to Eclipse CDT on Win7, and while configuring I encountered a problem with the following simple OpenGL code (which works fine in Visual Studio): #define GLEW_STATIC #include <GL/glew.h> #include <GLFW/glfw3.h> int main() { GLFWwindow* w; if (!glfwInit()) return -1; w = glfwCreateWindow(640, 480, "Hello World", NULL, NULL); if (!w) { glfwTerminate(); return -1; } glfwMakeContextCurrent(w);

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: How can you link GLEW to a project with CMake? We've been trying to link GLEW to our project using CMake for at least 3 hours without any success so any help is accepted. I'm using the FindGLEW.cmake which comes with CMake 3.1.0 CMakeLists.txt find_package(GLEW REQUIRED) if (GLEW_FOUND) include_directories($(GLEW_INCLUDE_DIRS)) endif() Environment Variables I'm using MinGW w64 to compile the sources and we successfully linked GLFW and GLM just by copying the includes and libs to their respective folders, but after doing the same with GLEW,

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm getting some undefined references when building my project. Here's the build log: **** Build of configuration Debug for project test **** **** Internal Builder is used for build **** g++ -O0 -g3 -Wall -c -fmessage-length=0 -o src\main.o ..\src\main.cpp g++ -O0 -g3 -Wall -c -fmessage-length=0 -o src\test.o ..\src\test.cpp g++ -O0 -g3 -Wall -c -fmessage-length=0 -o src\window.o ..\src\window.cpp ..\src\window.cpp: In member function 'void Window::StartRenderContext()': ..\src\window.cpp:150:24: warning: NULL used in arithmetic ..\src

　OpenGL 　　OpenGL是个专业的3D程序接口，是一个功能强大，调用方便的底层3D图形库。OpenGL的前身是SGI公司为其图形工作站开发的IRIS GL。IRIS GL是一个工业标准的3D图形软件接口，功能虽然强大但是移植性不好，于是SGI公司便在IRIS GL的基础上开发了OpenGL。OpenGL的英文全称是“Open Graphics Library”，顾名思义，OpenGL便是“开放的图形程序接口”。虽然DirectX在家用市场全面领先，但在专业高端绘图领域，OpenGL是不 能被取代的主角。 　　OpenGL是个与。硬件无关的软件接口，可以在不同的平台如Windows 95、Windows NT、Unix、Linux、MacOS、OS／2之间进行移植。因此，支持OpenGL的软件具有很好的移植性，可以获得非常广泛的应用。由于 OpenGL是3D图形的底层图形库，没有提供几何实体图元，不能直接用以描述场景。但是，通过一些转换程序，可以很方便地将AutoCAD、3DS等 3D图形设计软件制作的DFX和3DS模型文件转换成OpenGL的顶点数组。 来源：博客园 作者： lydstory 链接：https://www.cnblogs.com/hshy/p/11484215.html