mirror of
https://github.com/glfw/glfw.git
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d7e30b1c74
This removes all dependencies from the GLFW test programs on the Vulkan SDK. It also removes support for linking the GLFW shared library (dynamic library, DLL) against the Vulkan loader static library.
132 lines
3.3 KiB
C
132 lines
3.3 KiB
C
//========================================================================
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// Empty event test
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// Copyright (c) Camilla Löwy <elmindreda@glfw.org>
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//
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// This software is provided 'as-is', without any express or implied
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// warranty. In no event will the authors be held liable for any damages
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// arising from the use of this software.
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//
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// Permission is granted to anyone to use this software for any purpose,
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// including commercial applications, and to alter it and redistribute it
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// freely, subject to the following restrictions:
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//
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// 1. The origin of this software must not be misrepresented; you must not
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// claim that you wrote the original software. If you use this software
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// in a product, an acknowledgment in the product documentation would
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// be appreciated but is not required.
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//
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// 2. Altered source versions must be plainly marked as such, and must not
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// be misrepresented as being the original software.
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//
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// 3. This notice may not be removed or altered from any source
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// distribution.
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//
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//========================================================================
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//
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// This test is intended to verify that posting of empty events works
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//
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//========================================================================
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#include "tinycthread.h"
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#include <glad/gl.h>
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#include <GLFW/glfw3.h>
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#include <math.h>
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#include <stdio.h>
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#include <stdlib.h>
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static volatile int running = GLFW_TRUE;
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static void error_callback(int error, const char* description)
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{
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fprintf(stderr, "Error: %s\n", description);
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}
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static int thread_main(void* data)
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{
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struct timespec time;
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while (running)
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{
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clock_gettime(CLOCK_REALTIME, &time);
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time.tv_sec += 1;
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thrd_sleep(&time, NULL);
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glfwPostEmptyEvent();
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}
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return 0;
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}
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static void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods)
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{
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if (key == GLFW_KEY_ESCAPE && action == GLFW_PRESS)
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glfwSetWindowShouldClose(window, GLFW_TRUE);
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}
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static float nrand(void)
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{
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return (float) rand() / (float) RAND_MAX;
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}
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int main(void)
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{
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int result;
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thrd_t thread;
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GLFWwindow* window;
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srand((unsigned int) time(NULL));
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glfwSetErrorCallback(error_callback);
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if (!glfwInit())
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exit(EXIT_FAILURE);
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window = glfwCreateWindow(640, 480, "Empty Event Test", NULL, NULL);
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if (!window)
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{
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glfwTerminate();
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exit(EXIT_FAILURE);
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}
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glfwMakeContextCurrent(window);
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gladLoadGL(glfwGetProcAddress);
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glfwSetKeyCallback(window, key_callback);
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if (thrd_create(&thread, thread_main, NULL) != thrd_success)
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{
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fprintf(stderr, "Failed to create secondary thread\n");
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glfwTerminate();
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exit(EXIT_FAILURE);
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}
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while (running)
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{
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int width, height;
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float r = nrand(), g = nrand(), b = nrand();
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float l = (float) sqrt(r * r + g * g + b * b);
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glfwGetFramebufferSize(window, &width, &height);
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glViewport(0, 0, width, height);
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glClearColor(r / l, g / l, b / l, 1.f);
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glClear(GL_COLOR_BUFFER_BIT);
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glfwSwapBuffers(window);
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glfwWaitEvents();
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if (glfwWindowShouldClose(window))
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running = GLFW_FALSE;
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}
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glfwHideWindow(window);
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thrd_join(thread, &result);
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glfwDestroyWindow(window);
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glfwTerminate();
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exit(EXIT_SUCCESS);
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}
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