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OpenGL is a graphics standard and API which targets the desktop and workstation markets. It is designed to be easy to accelerate with dedicated computer hardware, and hence most implementations give greatly improved performance over traditional software rendering. Currently, OpenGL is used for applications like CAD software and computer games. It is also cross-platform. The OpenGL standard is controlled by the Khronos group, which also controls OpenGL ES.

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Ugly output with openGL

I just started to study openGL and I wrote this "Hello World" program to draw a triangle. #include <GLFW/glfw3.h> int main(void) { GLFWwindow* window; /* Initialize the library */ if (! … glfwInit()) return -1; /* Create a windowed mode window and its OpenGL context */ window = glfwCreateWindow(640, 640, "Hello World", NULL, NULL); if (! …
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