glfw/tests/reopen.c

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//========================================================================
// Window re-opener (open/close stress test)
// Copyright (c) Camilla Berglund <elmindreda@elmindreda.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 came about as the result of bug #1262773
//
// It closes and re-opens the GLFW window every five seconds, alternating
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// between windowed and full screen mode
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//
// It also times and logs opening and closing actions and attempts to separate
// user initiated window closing from its own
//
//========================================================================
#include <GLFW/glfw3.h>
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#include <time.h>
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#include <stdio.h>
#include <stdlib.h>
static void error_callback(int error, const char* description)
{
fprintf(stderr, "Error: %s\n", description);
}
static void framebuffer_size_callback(GLFWwindow* window, int width, int height)
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{
glViewport(0, 0, width, height);
}
static void window_close_callback(GLFWwindow* window)
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{
printf("Close callback triggered\n");
}
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static void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods)
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{
if (action != GLFW_PRESS)
return;
switch (key)
{
case GLFW_KEY_Q:
case GLFW_KEY_ESCAPE:
glfwSetWindowShouldClose(window, GL_TRUE);
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break;
}
}
static GLFWwindow* open_window(int width, int height, GLFWmonitor* monitor)
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{
double base;
GLFWwindow* window;
base = glfwGetTime();
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window = glfwCreateWindow(width, height, "Window Re-opener", monitor, NULL);
if (!window)
return NULL;
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glfwMakeContextCurrent(window);
glfwSwapInterval(1);
glfwSetFramebufferSizeCallback(window, framebuffer_size_callback);
glfwSetWindowCloseCallback(window, window_close_callback);
glfwSetKeyCallback(window, key_callback);
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if (monitor)
{
printf("Opening full screen window on monitor %s took %0.3f seconds\n",
glfwGetMonitorName(monitor),
glfwGetTime() - base);
}
else
{
printf("Opening regular window took %0.3f seconds\n",
glfwGetTime() - base);
}
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return window;
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}
static void close_window(GLFWwindow* window)
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{
double base = glfwGetTime();
glfwDestroyWindow(window);
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printf("Closing window took %0.3f seconds\n", glfwGetTime() - base);
}
int main(int argc, char** argv)
{
int count = 0;
GLFWwindow* window;
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srand((unsigned int) time(NULL));
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glfwSetErrorCallback(error_callback);
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if (!glfwInit())
exit(EXIT_FAILURE);
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for (;;)
{
GLFWmonitor* monitor = NULL;
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if (count % 2 == 0)
{
int monitorCount;
GLFWmonitor** monitors = glfwGetMonitors(&monitorCount);
monitor = monitors[rand() % monitorCount];
}
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window = open_window(640, 480, monitor);
if (!window)
{
glfwTerminate();
exit(EXIT_FAILURE);
}
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glMatrixMode(GL_PROJECTION);
glOrtho(-1.f, 1.f, -1.f, 1.f, 1.f, -1.f);
glMatrixMode(GL_MODELVIEW);
glfwSetTime(0.0);
while (glfwGetTime() < 5.0)
{
glClear(GL_COLOR_BUFFER_BIT);
glPushMatrix();
glRotatef((GLfloat) glfwGetTime() * 100.f, 0.f, 0.f, 1.f);
glRectf(-0.5f, -0.5f, 1.f, 1.f);
glPopMatrix();
glfwSwapBuffers(window);
glfwPollEvents();
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if (glfwWindowShouldClose(window))
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{
close_window(window);
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printf("User closed window\n");
glfwTerminate();
exit(EXIT_SUCCESS);
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}
}
printf("Closing window\n");
close_window(window);
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count++;
}
glfwTerminate();
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}