mirror of
https://github.com/glfw/glfw.git
synced 2024-11-22 10:05:10 +00:00
98 lines
2.7 KiB
C
98 lines
2.7 KiB
C
//========================================================================
|
|
// Event wait timeout test
|
|
// Copyright (c) Camilla Löwy <elmindreda@glfw.org>
|
|
//
|
|
// This software is provided 'as-is', without any express or implied
|
|
// warranty. In no event will the authors be held liable for any damages
|
|
// arising from the use of this software.
|
|
//
|
|
// Permission is granted to anyone to use this software for any purpose,
|
|
// including commercial applications, and to alter it and redistribute it
|
|
// freely, subject to the following restrictions:
|
|
//
|
|
// 1. The origin of this software must not be misrepresented; you must not
|
|
// claim that you wrote the original software. If you use this software
|
|
// in a product, an acknowledgment in the product documentation would
|
|
// be appreciated but is not required.
|
|
//
|
|
// 2. Altered source versions must be plainly marked as such, and must not
|
|
// be misrepresented as being the original software.
|
|
//
|
|
// 3. This notice may not be removed or altered from any source
|
|
// distribution.
|
|
//
|
|
//========================================================================
|
|
//
|
|
// This test is intended to verify that waiting for events with timeout works
|
|
//
|
|
//========================================================================
|
|
|
|
#include <glad/glad.h>
|
|
#include <GLFW/glfw3.h>
|
|
|
|
#include <time.h>
|
|
#include <math.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
static void error_callback(int error, const char* description)
|
|
{
|
|
fprintf(stderr, "Error: %s\n", description);
|
|
}
|
|
|
|
static void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods)
|
|
{
|
|
if (key == GLFW_KEY_ESCAPE && action == GLFW_PRESS)
|
|
glfwSetWindowShouldClose(window, GLFW_TRUE);
|
|
}
|
|
|
|
static float nrand(void)
|
|
{
|
|
return (float) rand() / (float) RAND_MAX;
|
|
}
|
|
|
|
int main(void)
|
|
{
|
|
GLFWwindow* window;
|
|
|
|
srand((unsigned int) time(NULL));
|
|
|
|
glfwSetErrorCallback(error_callback);
|
|
|
|
if (!glfwInit())
|
|
exit(EXIT_FAILURE);
|
|
|
|
window = glfwCreateWindow(640, 480, "Event Wait Timeout Test", NULL, NULL);
|
|
if (!window)
|
|
{
|
|
glfwTerminate();
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
glfwMakeContextCurrent(window);
|
|
gladLoadGLLoader((GLADloadproc) glfwGetProcAddress);
|
|
glfwSetKeyCallback(window, key_callback);
|
|
|
|
while (!glfwWindowShouldClose(window))
|
|
{
|
|
int width, height;
|
|
float r = nrand(), g = nrand(), b = nrand();
|
|
float l = (float) sqrt(r * r + g * g + b * b);
|
|
|
|
glfwGetFramebufferSize(window, &width, &height);
|
|
|
|
glViewport(0, 0, width, height);
|
|
glClearColor(r / l, g / l, b / l, 1.f);
|
|
glClear(GL_COLOR_BUFFER_BIT);
|
|
glfwSwapBuffers(window);
|
|
|
|
glfwWaitEventsTimeout(1.0);
|
|
}
|
|
|
|
glfwDestroyWindow(window);
|
|
|
|
glfwTerminate();
|
|
exit(EXIT_SUCCESS);
|
|
}
|
|
|