ScrapExplorer - reopen.c
Home / ext / glfw / tests Lines: 20 | Size: 6756 bytes [Download] [Show on GitHub] [Search similar files] [Raw] [Raw (proxy)][FILE BEGIN]1//======================================================================== 2// Window re-opener (open/close stress test) 3// Copyright (c) Camilla Löwy <[email protected]> 4// 5// This software is provided 'as-is', without any express or implied 6// warranty. In no event will the authors be held liable for any damages 7// arising from the use of this software. 8// 9// Permission is granted to anyone to use this software for any purpose, 10// including commercial applications, and to alter it and redistribute it 11// freely, subject to the following restrictions: 12// 13// 1. The origin of this software must not be misrepresented; you must not 14// claim that you wrote the original software. If you use this software 15// in a product, an acknowledgment in the product documentation would 16// be appreciated but is not required. 17// 18// 2. Altered source versions must be plainly marked as such, and must not 19// be misrepresented as being the original software. 20// 21// 3. This notice may not be removed or altered from any source 22// distribution. 23// 24//======================================================================== 25// 26// This test came about as the result of bug #1262773 27// 28// It closes and re-opens the GLFW window every five seconds, alternating 29// between windowed and full screen mode 30// 31// It also times and logs opening and closing actions and attempts to separate 32// user initiated window closing from its own 33// 34//======================================================================== 35 36#define GLAD_GL_IMPLEMENTATION 37#include <glad/gl.h> 38#define GLFW_INCLUDE_NONE 39#include <GLFW/glfw3.h> 40 41#include <time.h> 42#include <stdio.h> 43#include <stdlib.h> 44 45#include "linmath.h" 46 47static const char* vertex_shader_text = 48"#version 110\n" 49"uniform mat4 MVP;\n" 50"attribute vec2 vPos;\n" 51"void main()\n" 52"{\n" 53" gl_Position = MVP * vec4(vPos, 0.0, 1.0);\n" 54"}\n"; 55 56static const char* fragment_shader_text = 57"#version 110\n" 58"void main()\n" 59"{\n" 60" gl_FragColor = vec4(1.0);\n" 61"}\n"; 62 63static const vec2 vertices[4] = 64{ 65 { -0.5f, -0.5f }, 66 { 0.5f, -0.5f }, 67 { 0.5f, 0.5f }, 68 { -0.5f, 0.5f } 69}; 70 71static void error_callback(int error, const char* description) 72{ 73 fprintf(stderr, "Error: %s\n", description); 74} 75 76static void window_close_callback(GLFWwindow* window) 77{ 78 printf("Close callback triggered\n"); 79} 80 81static void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods) 82{ 83 if (action != GLFW_PRESS) 84 return; 85 86 switch (key) 87 { 88 case GLFW_KEY_Q: 89 case GLFW_KEY_ESCAPE: 90 glfwSetWindowShouldClose(window, GLFW_TRUE); 91 break; 92 } 93} 94 95static void close_window(GLFWwindow* window) 96{ 97 double base = glfwGetTime(); 98 glfwDestroyWindow(window); 99 printf("Closing window took %0.3f seconds\n", glfwGetTime() - base); 100} 101 102int main(int argc, char** argv) 103{ 104 int count = 0; 105 double base; 106 GLFWwindow* window; 107 108 srand((unsigned int) time(NULL)); 109 110 glfwSetErrorCallback(error_callback); 111 112 if (!glfwInit()) 113 exit(EXIT_FAILURE); 114 115 glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 2); 116 glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0); 117 118 for (;;) 119 { 120 int width, height; 121 GLFWmonitor* monitor = NULL; 122 GLuint vertex_shader, fragment_shader, program, vertex_buffer; 123 GLint mvp_location, vpos_location; 124 125 if (count & 1) 126 { 127 int monitorCount; 128 GLFWmonitor** monitors = glfwGetMonitors(&monitorCount); 129 monitor = monitors[rand() % monitorCount]; 130 } 131 132 if (monitor) 133 { 134 const GLFWvidmode* mode = glfwGetVideoMode(monitor); 135 width = mode->width; 136 height = mode->height; 137 } 138 else 139 { 140 width = 640; 141 height = 480; 142 } 143 144 base = glfwGetTime(); 145 146 window = glfwCreateWindow(width, height, "Window Re-opener", monitor, NULL); 147 if (!window) 148 { 149 glfwTerminate(); 150 exit(EXIT_FAILURE); 151 } 152 153 if (monitor) 154 { 155 printf("Opening full screen window on monitor %s took %0.3f seconds\n", 156 glfwGetMonitorName(monitor), 157 glfwGetTime() - base); 158 } 159 else 160 { 161 printf("Opening regular window took %0.3f seconds\n", 162 glfwGetTime() - base); 163 } 164 165 glfwSetWindowCloseCallback(window, window_close_callback); 166 glfwSetKeyCallback(window, key_callback); 167 168 glfwMakeContextCurrent(window); 169 gladLoadGL(glfwGetProcAddress); 170 glfwSwapInterval(1); 171 172 vertex_shader = glCreateShader(GL_VERTEX_SHADER); 173 glShaderSource(vertex_shader, 1, &vertex_shader_text, NULL); 174 glCompileShader(vertex_shader); 175 176 fragment_shader = glCreateShader(GL_FRAGMENT_SHADER); 177 glShaderSource(fragment_shader, 1, &fragment_shader_text, NULL); 178 glCompileShader(fragment_shader); 179 180 program = glCreateProgram(); 181 glAttachShader(program, vertex_shader); 182 glAttachShader(program, fragment_shader); 183 glLinkProgram(program); 184 185 mvp_location = glGetUniformLocation(program, "MVP"); 186 vpos_location = glGetAttribLocation(program, "vPos"); 187 188 glGenBuffers(1, &vertex_buffer); 189 glBindBuffer(GL_ARRAY_BUFFER, vertex_buffer); 190 glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW); 191 192 glEnableVertexAttribArray(vpos_location); 193 glVertexAttribPointer(vpos_location, 2, GL_FLOAT, GL_FALSE, 194 sizeof(vertices[0]), (void*) 0); 195 196 glfwSetTime(0.0); 197 198 while (glfwGetTime() < 5.0) 199 { 200 float ratio; 201 int width, height; 202 mat4x4 m, p, mvp; 203 204 glfwGetFramebufferSize(window, &width, &height); 205 ratio = width / (float) height; 206 207 glViewport(0, 0, width, height); 208 glClear(GL_COLOR_BUFFER_BIT); 209 210 mat4x4_ortho(p, -ratio, ratio, -1.f, 1.f, 0.f, 1.f); 211 212 mat4x4_identity(m); 213 mat4x4_rotate_Z(m, m, (float) glfwGetTime()); 214 mat4x4_mul(mvp, p, m); 215 216 glUseProgram(program); 217 glUniformMatrix4fv(mvp_location, 1, GL_FALSE, (const GLfloat*) mvp); 218 glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 219 220 glfwSwapBuffers(window); 221 glfwPollEvents(); 222 223 if (glfwWindowShouldClose(window)) 224 { 225 close_window(window); 226 printf("User closed window\n"); 227 228 glfwTerminate(); 229 exit(EXIT_SUCCESS); 230 } 231 } 232 233 printf("Closing window\n"); 234 close_window(window); 235 236 count++; 237 } 238 239 glfwTerminate(); 240} 241 242[FILE END](C) 2025 0x4248 (C) 2025 4248 Media and 4248 Systems, All part of 0x4248 See LICENCE files for more information. 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