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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, "Okno test", NULL, NULL);
- if (!window)
- {
- glfwTerminate();
- exit(EXIT_FAILURE);
- }
- glfwMakeContextCurrent(window);
- 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_POLYGON);
- glColor3f(1.f, 0.f, 0.f);
- glVertex3f(-1.2f, -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);
- glColor3f(1.f, 1.f, 1.f);
- glVertex3f(0.0f, 0.0f, 0.0f);
- glEnd();
- glfwSwapBuffers(window);
- glfwPollEvents();
- }
- glfwDestroyWindow(window);
- glfwTerminate();
- exit(EXIT_SUCCESS);
- }
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