74 lines
1.4 KiB
C++
74 lines
1.4 KiB
C++
#include <GL/glew.h>
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#include <GLFW/glfw3.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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void processInput(GLFWwindow *window)
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{
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if(glfwGetKey(window, GLFW_KEY_ESCAPE) == GLFW_PRESS)
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glfwSetWindowShouldClose(window, true);
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}
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int main(int argc, char** argv) {
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GLFWwindow* window;
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if (!glfwInit())
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return -1;
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window = glfwCreateWindow(640, 480, "Hello World", NULL, NULL);
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if (!window)
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{
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glfwTerminate();
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return -1;
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}
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glfwMakeContextCurrent(window);
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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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while (!glfwWindowShouldClose(window))
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{
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processInput(window);
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/* Render here */
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glClearColor(0.2f, 0.3f, 0.3f, 1.0f);
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glClear(GL_COLOR_BUFFER_BIT);
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/* Poll for and process events */
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glfwPollEvents();
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glfwSwapBuffers(window);
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}
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glfwTerminate();
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}
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