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
// between windowed and fullscreen mode
//
// It also times and logs opening and closing actions and attempts to separate
// user initiated window closing from its own
//
//========================================================================
#include <GL/glfw3.h>
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#include <stdio.h>
#include <stdlib.h>
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static GLFWwindow window_handle = NULL;
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static GLboolean closed = GL_FALSE;
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static void window_size_callback(GLFWwindow window, int width, int height)
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{
glViewport(0, 0, width, height);
}
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static int window_close_callback(GLFWwindow window)
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{
printf("Close callback triggered\n");
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closed = GL_TRUE;
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return 0;
}
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static void key_callback(GLFWwindow window, int key, int action)
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{
if (action != GLFW_PRESS)
return;
switch (key)
{
case GLFW_KEY_Q:
case GLFW_KEY_ESCAPE:
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closed = GL_TRUE;
break;
}
}
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static GLboolean open_window(int width, int height, GLFWmonitor monitor)
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{
double base;
base = glfwGetTime();
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window_handle = glfwCreateWindow(width, height, "Window Re-opener", monitor, NULL);
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if (!window_handle)
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{
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fprintf(stderr, "Failed to open %s mode GLFW window: %s\n",
monitor ? "fullscreen" : "windowed",
glfwErrorString(glfwGetError()));
return GL_FALSE;
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}
glfwMakeContextCurrent(window_handle);
glfwSwapInterval(1);
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glfwSetWindowSizeCallback(window_size_callback);
glfwSetWindowCloseCallback(window_close_callback);
glfwSetKeyCallback(key_callback);
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printf("Opening %s mode window took %0.3f seconds\n",
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monitor ? "fullscreen" : "windowed",
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glfwGetTime() - base);
return GL_TRUE;
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}
static void close_window(void)
{
double base = glfwGetTime();
glfwDestroyWindow(window_handle);
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window_handle = NULL;
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printf("Closing window took %0.3f seconds\n", glfwGetTime() - base);
}
int main(int argc, char** argv)
{
int count = 0;
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if (!glfwInit())
{
fprintf(stderr, "Failed to initialize GLFW: %s\n", glfwErrorString(glfwGetError()));
return GL_FALSE;
}
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for (;;)
{
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GLFWmonitor monitor = NULL;
if (count & 1)
monitor = glfwGetPrimaryMonitor();
if (!open_window(640, 480, monitor))
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_handle);
glfwPollEvents();
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if (closed)
{
close_window();
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printf("User closed window\n");
exit(EXIT_SUCCESS);
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}
}
printf("Closing window\n");
close_window();
count++;
}
}