40 lines
965 B
C++
40 lines
965 B
C++
#include <GL/glew.h>
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#include <GL/freeglut.h>
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#include <cstdio>
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void display() {
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glClear(GL_COLOR_BUFFER_BIT);
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glBegin(GL_TRIANGLES);
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glColor3f(1.0, 0.0, 0.0);
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glVertex2f(-0.5, -0.5);
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glColor3f(0.0, 1.0, 0.0);
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glVertex2f(0.5, -0.5);
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glColor3f(0.0, 0.0, 1.0);
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glVertex2f(0.0, 0.5);
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glEnd();
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glFlush();
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}
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void framebuffer_size_callback(GLFWwindow* window, int width, int height)
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{
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glViewport(0, 0, width, height);
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}
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int main(int argc, char** argv) {
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glutInit(&argc, argv);
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glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB);
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glutInitWindowSize(800, 600);
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glutCreateWindow("OpenGL Example");
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GLenum err = glewInit();
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if (GLEW_OK != err) {
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fprintf(stderr, "GLEW error: %s\n", glewGetErrorString(err));
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return 1;
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}
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glViewport(0, 0, 800, 600);
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glfwSetFramebufferSizeCallback(window, framebuffer_size_callback);
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glutDisplayFunc(display);
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glutMainLoop();
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return 0;
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}
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