glew

问题 GLEW is just and extension library or it contains OpenGL ES 2.0 implementation as well? The OpenGL Extension Wrangler Library (GLEW) is a cross-platform open-source C/C++ extension loading library. GLEW provides efficient run-time mechanisms for determining which OpenGL extensions are supported on the target platform. OpenGL core and extension functionality is exposed in a single header file. I am confused as I find the following in glew.h : #define glLinkProgram GLEW_GET_FUN(_

问题 I've tried everything to get OpenGL 3.2 to render with CG shaders in my game engine but I have had no luck. So I decided to make a bare minimal project but still shaders won't work. In theory my test project should just render a red triangle but it is white because the shader is not doing anything. I'll post the code here: #include <stdio.h> #include <stdlib.h> #include <vector> #include <string> #include <GL/glew.h> #include <Cg/cg.h> #include <Cg/cgGL.h> #include <SDL2/SDL.h> int main() {

问题 I am running Mac OS X Sierra 10.12.6 (16G29). I am working on a macbook pro. I have installed brew and the following packages: brew install glfw3 brew install glew brew install glm Here is my c++ program: #include <iostream> #include <GLFW/glfw3.h> GLFWwindow* window; #include <GL/gl.h> int main(int argc, const char * argv[]) { if (!glfwInit()) { return -1; } glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3); glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3); // Should be true for macOS, according to

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 5 years ago . I can't figure out why it keeps crashing on glGenBuffers GDB backtrace gives me this #0 0x00000000 in ?? () #1 0x0808701d in setupBuffers () at main_scene.cc:250 #2 0x08088cf8 in main (argc=1, argv=0xbffff3c4) at main_scene.cc:694 Here is my main() int main(int argc, char **argv) { glutInit(&argc, argv);

问题 So when you #include a header in C++, the compiler just copies the content of the header and pastes it where the #include was. I'm making a small game engine/framework and I'm including GLEW & GLFW in my Engine.h because I need things like GLFWwindow. But I get a compiler error in my Test Game 1 Project that uses the engine because since the compiler is just copying the code form engine.h and pasting it in test game 1's main.cpp, It's trying to include glew and glfw in my test game 1, which I

问题 I'm sorry if this is a duplicate question but I've looked through StackOverflow and Google and haven't come up with an answer yet. I'm using Code::Blocks and SDL and trying to get GLEW working with openGL. The program code is: #include <Windows.h> #include <SDL.h> #define GLEW_STATIC #include <glew.h> int main(int argc, char *argv[]) { //initialize SDL SDL_Init(SDL_INIT_VIDEO); SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE); SDL_GL_SetAttribute(SDL_GL_CONTEXT

问题 I have the following function I've defined that i use with glDebugCallback , which works perfectly fine with GCC and Clang on Linux. However on Windows, the following code does not want to register as a debug callback for OpenGL: inline void messageCallback(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar* message, const void* userParam) { // ... } and then I set it up with glDebugMessageCallback(messageCallback, nullptr); After looking up what the glew

问题 I'm just learning OpenGl and trying to implement a simple test of how the Primitive Restart Index works. No matter what I try, g++ gives me the error "undefined reference to `__glewPrimitiveRestartIndex'." Here's the code in question: #include <GL/glew.h> #include <GL/freeglut.h> static GLfloat vertices[] = {0.0, 0.0, 0.0, 5.0, -5.0, 0.0, 0xffff, 0.0, -10.0, 5.0, -15.0, 6.0, -8.0}; void init(void) { glEnable(GL_PRIMITIVE_RESTART); glPrimitiveRestartIndex(0xffff); glEnableClientState(GL_VERTEX

问题 In my project directory, i have: ./external/glew, which has glew compiled from source (ran make) ./external/glfw, which has glfw also compiled from source (ran make x11) in my .c source code: #include <stdio.h> #include <stdlib.h> #include "external/glew/include/GL/glew.h" #include "external/glfw/include/GL/glfw.h" i tried to compile using GCC: gcc test1.c -o test1 -DGLEW_STATIC -L./external/glew/lib -lGLEW -lGLU -lGL \ -L./external/glfw/lib/x11 -lglfw ./external/glew/lib is where the libGLEW

问题 I'm working on a C# utility library for OpenGL at the moment. For cross platform window management I use GLFW and I got functions like glfwCreateWindow or glfwMakeContextCurrent loaded successfully with DllImport. Now I want to use OpenGL and since I've mostly worked with GLEW in the past I decided to use it for my C# project as well. So I tried to use DllImport for glewInit and that worked. But when I try to do the same thing for OpenGL functions such as glClear I get an error saying that it