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GLFWのサンプルプログラム http://www.glfw.org/docs/latest/quick.html#quick_include
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#include <GLFW/glfw3.h> | |
#include <stdlib.h> | |
#include <stdio.h> | |
static void error_callback(int error, const char* description) | |
{ | |
fputs(description, stderr); | |
} | |
static void key_callback(GLFWwindow* window, int key, int scancode, int action, | |
int mods) | |
{ | |
if (key == GLFW_KEY_ESCAPE && action == GLFW_PRESS) | |
glfwSetWindowShouldClose(window, GL_TRUE); | |
} | |
int main(void) | |
{ | |
GLFWwindow* window; | |
glfwSetErrorCallback(error_callback); | |
if (!glfwInit()) | |
exit(EXIT_FAILURE); | |
window = glfwCreateWindow(640, 480, "Simple example", NULL, NULL); | |
if (!window) | |
{ | |
glfwTerminate(); | |
exit(EXIT_FAILURE); | |
} | |
glfwMakeContextCurrent(window); | |
glfwSwapInterval(1); | |
glfwSetKeyCallback(window, key_callback); | |
while (!glfwWindowShouldClose(window)) | |
{ | |
float ratio; | |
int width, height; | |
glfwGetFramebufferSize(window, &width, &height); | |
ratio = width / (float)height; | |
glViewport(0, 0, width, height); | |
glClear(GL_COLOR_BUFFER_BIT); | |
glMatrixMode(GL_PROJECTION); | |
glLoadIdentity(); | |
glOrtho(-ratio, ratio, -1.f, 1.f, 1.f, -1.f); | |
glMatrixMode(GL_MODELVIEW); | |
glLoadIdentity(); | |
glRotatef((float)glfwGetTime() * 50.f, 0.f, 0.f, 1.f); | |
glBegin(GL_TRIANGLES); | |
glColor3f(1.f, 0.f, 0.f); | |
glVertex3f(-0.6f, -0.4f, 0.f); | |
glColor3f(0.f, 1.f, 0.f); | |
glVertex3f(0.6f, -0.4f, 0.f); | |
glColor3f(0.f, 0.f, 1.f); | |
glVertex3f(0.f, 0.6f, 0.f); | |
glEnd(); | |
glfwSwapBuffers(window); | |
glfwPollEvents(); | |
} | |
glfwDestroyWindow(window); | |
glfwTerminate(); | |
exit(EXIT_SUCCESS); | |
} |
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