mirror of
https://github.com/glfw/glfw.git
synced 2024-11-14 14:33:52 +00:00
62074f3dea
This updates to a newer version of glad2 and switches to the header-only variant. This also (finally) switches to the newer glad2 loader signature that allows us to pass in glfwGetInstanceProcAddress directly.
134 lines
3.4 KiB
C
134 lines
3.4 KiB
C
//========================================================================
|
|
// Empty event 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 posting of empty events works
|
|
//
|
|
//========================================================================
|
|
|
|
#include "tinycthread.h"
|
|
|
|
#define GLAD_GL_IMPLEMENTATION
|
|
#include <glad/gl.h>
|
|
#define GLFW_INCLUDE_NONE
|
|
#include <GLFW/glfw3.h>
|
|
|
|
#include <math.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
static volatile int running = GLFW_TRUE;
|
|
|
|
static void error_callback(int error, const char* description)
|
|
{
|
|
fprintf(stderr, "Error: %s\n", description);
|
|
}
|
|
|
|
static int thread_main(void* data)
|
|
{
|
|
struct timespec time;
|
|
|
|
while (running)
|
|
{
|
|
clock_gettime(CLOCK_REALTIME, &time);
|
|
time.tv_sec += 1;
|
|
thrd_sleep(&time, NULL);
|
|
|
|
glfwPostEmptyEvent();
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
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)
|
|
{
|
|
int result;
|
|
thrd_t thread;
|
|
GLFWwindow* window;
|
|
|
|
srand((unsigned int) time(NULL));
|
|
|
|
glfwSetErrorCallback(error_callback);
|
|
|
|
if (!glfwInit())
|
|
exit(EXIT_FAILURE);
|
|
|
|
window = glfwCreateWindow(640, 480, "Empty Event Test", NULL, NULL);
|
|
if (!window)
|
|
{
|
|
glfwTerminate();
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
glfwMakeContextCurrent(window);
|
|
gladLoadGL(glfwGetProcAddress);
|
|
glfwSetKeyCallback(window, key_callback);
|
|
|
|
if (thrd_create(&thread, thread_main, NULL) != thrd_success)
|
|
{
|
|
fprintf(stderr, "Failed to create secondary thread\n");
|
|
|
|
glfwTerminate();
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
while (running)
|
|
{
|
|
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);
|
|
|
|
glfwWaitEvents();
|
|
|
|
if (glfwWindowShouldClose(window))
|
|
running = GLFW_FALSE;
|
|
}
|
|
|
|
glfwHideWindow(window);
|
|
thrd_join(thread, &result);
|
|
glfwDestroyWindow(window);
|
|
|
|
glfwTerminate();
|
|
exit(EXIT_SUCCESS);
|
|
}
|
|
|