mirror of
https://github.com/glfw/glfw.git
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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.
264 lines
7.6 KiB
C
264 lines
7.6 KiB
C
//========================================================================
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// Monitor information tool
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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 prints monitor and video mode information or verifies video
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// modes
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//
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//========================================================================
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#define GLAD_GL_IMPLEMENTATION
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#include <glad/gl.h>
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#define GLFW_INCLUDE_NONE
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#include <GLFW/glfw3.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include "getopt.h"
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enum Mode
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{
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LIST_MODE,
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TEST_MODE
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};
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static void usage(void)
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{
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printf("Usage: monitors [-t]\n");
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printf(" monitors -h\n");
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}
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static int euclid(int a, int b)
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{
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return b ? euclid(b, a % b) : a;
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}
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static const char* format_mode(const GLFWvidmode* mode)
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{
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static char buffer[512];
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const int gcd = euclid(mode->width, mode->height);
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snprintf(buffer,
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sizeof(buffer),
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"%i x %i x %i (%i:%i) (%i %i %i) %i Hz",
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mode->width, mode->height,
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mode->redBits + mode->greenBits + mode->blueBits,
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mode->width / gcd, mode->height / gcd,
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mode->redBits, mode->greenBits, mode->blueBits,
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mode->refreshRate);
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buffer[sizeof(buffer) - 1] = '\0';
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return buffer;
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}
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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 void framebuffer_size_callback(GLFWwindow* window, int width, int height)
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{
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printf("Framebuffer resized to %ix%i\n", width, height);
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glViewport(0, 0, width, height);
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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)
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glfwSetWindowShouldClose(window, GLFW_TRUE);
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}
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static void list_modes(GLFWmonitor* monitor)
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{
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int count, x, y, width_mm, height_mm, i;
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int workarea_x, workarea_y, workarea_width, workarea_height;
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float xscale, yscale;
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const GLFWvidmode* mode = glfwGetVideoMode(monitor);
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const GLFWvidmode* modes = glfwGetVideoModes(monitor, &count);
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glfwGetMonitorPos(monitor, &x, &y);
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glfwGetMonitorPhysicalSize(monitor, &width_mm, &height_mm);
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glfwGetMonitorContentScale(monitor, &xscale, &yscale);
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glfwGetMonitorWorkarea(monitor, &workarea_x, &workarea_y, &workarea_width, &workarea_height);
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printf("Name: %s (%s)\n",
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glfwGetMonitorName(monitor),
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glfwGetPrimaryMonitor() == monitor ? "primary" : "secondary");
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printf("Current mode: %s\n", format_mode(mode));
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printf("Virtual position: %i, %i\n", x, y);
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printf("Content scale: %f x %f\n", xscale, yscale);
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printf("Physical size: %i x %i mm (%0.2f dpi at %i x %i)\n",
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width_mm, height_mm, mode->width * 25.4f / width_mm, mode->width, mode->height);
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printf("Monitor work area: %i x %i starting at %i, %i\n",
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workarea_width, workarea_height, workarea_x, workarea_y);
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printf("Modes:\n");
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for (i = 0; i < count; i++)
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{
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printf("%3u: %s", (unsigned int) i, format_mode(modes + i));
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if (memcmp(mode, modes + i, sizeof(GLFWvidmode)) == 0)
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printf(" (current mode)");
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putchar('\n');
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}
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}
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static void test_modes(GLFWmonitor* monitor)
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{
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int i, count;
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GLFWwindow* window;
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const GLFWvidmode* modes = glfwGetVideoModes(monitor, &count);
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for (i = 0; i < count; i++)
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{
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const GLFWvidmode* mode = modes + i;
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GLFWvidmode current;
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glfwWindowHint(GLFW_RED_BITS, mode->redBits);
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glfwWindowHint(GLFW_GREEN_BITS, mode->greenBits);
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glfwWindowHint(GLFW_BLUE_BITS, mode->blueBits);
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glfwWindowHint(GLFW_REFRESH_RATE, mode->refreshRate);
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printf("Testing mode %u on monitor %s: %s\n",
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(unsigned int) i,
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glfwGetMonitorName(monitor),
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format_mode(mode));
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window = glfwCreateWindow(mode->width, mode->height,
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"Video Mode Test",
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glfwGetPrimaryMonitor(),
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NULL);
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if (!window)
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{
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printf("Failed to enter mode %u: %s\n",
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(unsigned int) i,
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format_mode(mode));
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continue;
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}
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glfwSetFramebufferSizeCallback(window, framebuffer_size_callback);
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glfwSetKeyCallback(window, key_callback);
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glfwMakeContextCurrent(window);
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gladLoadGL(glfwGetProcAddress);
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glfwSwapInterval(1);
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glfwSetTime(0.0);
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while (glfwGetTime() < 5.0)
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{
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glClear(GL_COLOR_BUFFER_BIT);
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glfwSwapBuffers(window);
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glfwPollEvents();
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if (glfwWindowShouldClose(window))
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{
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printf("User terminated program\n");
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glfwTerminate();
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exit(EXIT_SUCCESS);
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}
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}
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glGetIntegerv(GL_RED_BITS, ¤t.redBits);
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glGetIntegerv(GL_GREEN_BITS, ¤t.greenBits);
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glGetIntegerv(GL_BLUE_BITS, ¤t.blueBits);
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glfwGetWindowSize(window, ¤t.width, ¤t.height);
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if (current.redBits != mode->redBits ||
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current.greenBits != mode->greenBits ||
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current.blueBits != mode->blueBits)
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{
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printf("*** Color bit mismatch: (%i %i %i) instead of (%i %i %i)\n",
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current.redBits, current.greenBits, current.blueBits,
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mode->redBits, mode->greenBits, mode->blueBits);
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}
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if (current.width != mode->width || current.height != mode->height)
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{
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printf("*** Size mismatch: %ix%i instead of %ix%i\n",
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current.width, current.height,
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mode->width, mode->height);
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}
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printf("Closing window\n");
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glfwDestroyWindow(window);
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window = NULL;
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glfwPollEvents();
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}
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}
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int main(int argc, char** argv)
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{
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int ch, i, count, mode = LIST_MODE;
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GLFWmonitor** monitors;
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while ((ch = getopt(argc, argv, "th")) != -1)
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{
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switch (ch)
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{
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case 'h':
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usage();
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exit(EXIT_SUCCESS);
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case 't':
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mode = TEST_MODE;
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break;
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default:
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usage();
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exit(EXIT_FAILURE);
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}
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}
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glfwSetErrorCallback(error_callback);
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glfwInitHint(GLFW_COCOA_MENUBAR, GLFW_FALSE);
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if (!glfwInit())
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exit(EXIT_FAILURE);
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monitors = glfwGetMonitors(&count);
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for (i = 0; i < count; i++)
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{
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if (mode == LIST_MODE)
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list_modes(monitors[i]);
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else if (mode == TEST_MODE)
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test_modes(monitors[i]);
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}
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glfwTerminate();
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exit(EXIT_SUCCESS);
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}
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