mirror of https://github.com/encounter/SDL.git
97 lines
2.9 KiB
C
97 lines
2.9 KiB
C
/*
|
|
Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.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.
|
|
*/
|
|
|
|
/* Program to test querying of display info */
|
|
|
|
#include "SDL.h"
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
static void
|
|
print_mode(const char *prefix, const SDL_DisplayMode *mode)
|
|
{
|
|
if (!mode)
|
|
return;
|
|
|
|
SDL_Log("%s: fmt=%s w=%d h=%d refresh=%d\n",
|
|
prefix, SDL_GetPixelFormatName(mode->format),
|
|
mode->w, mode->h, mode->refresh_rate);
|
|
}
|
|
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
SDL_DisplayMode mode;
|
|
int num_displays, dpy;
|
|
|
|
/* Enable standard application logging */
|
|
SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
|
|
|
|
/* Load the SDL library */
|
|
if (SDL_Init(SDL_INIT_VIDEO) < 0) {
|
|
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't initialize SDL: %s\n", SDL_GetError());
|
|
return 1;
|
|
}
|
|
|
|
SDL_Log("Using video target '%s'.\n", SDL_GetCurrentVideoDriver());
|
|
num_displays = SDL_GetNumVideoDisplays();
|
|
|
|
SDL_Log("See %d displays.\n", num_displays);
|
|
|
|
for (dpy = 0; dpy < num_displays; dpy++) {
|
|
const int num_modes = SDL_GetNumDisplayModes(dpy);
|
|
SDL_Rect rect = { 0, 0, 0, 0 };
|
|
float ddpi, hdpi, vdpi;
|
|
int m;
|
|
|
|
SDL_GetDisplayBounds(dpy, &rect);
|
|
SDL_Log("%d: \"%s\" (%dx%d, (%d, %d)), %d modes.\n", dpy, SDL_GetDisplayName(dpy), rect.w, rect.h, rect.x, rect.y, num_modes);
|
|
|
|
if (SDL_GetDisplayDPI(dpy, &ddpi, &hdpi, &vdpi) == -1) {
|
|
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, " DPI: failed to query (%s)\n", SDL_GetError());
|
|
} else {
|
|
SDL_Log(" DPI: ddpi=%f; hdpi=%f; vdpi=%f\n", ddpi, hdpi, vdpi);
|
|
}
|
|
|
|
if (SDL_GetCurrentDisplayMode(dpy, &mode) == -1) {
|
|
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, " CURRENT: failed to query (%s)\n", SDL_GetError());
|
|
} else {
|
|
print_mode("CURRENT", &mode);
|
|
}
|
|
|
|
if (SDL_GetDesktopDisplayMode(dpy, &mode) == -1) {
|
|
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, " DESKTOP: failed to query (%s)\n", SDL_GetError());
|
|
} else {
|
|
print_mode("DESKTOP", &mode);
|
|
}
|
|
|
|
for (m = 0; m < num_modes; m++) {
|
|
if (SDL_GetDisplayMode(dpy, m, &mode) == -1) {
|
|
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, " MODE %d: failed to query (%s)\n", m, SDL_GetError());
|
|
} else {
|
|
char prefix[64];
|
|
SDL_snprintf(prefix, sizeof (prefix), " MODE %d", m);
|
|
print_mode(prefix, &mode);
|
|
}
|
|
}
|
|
|
|
SDL_Log("\n");
|
|
}
|
|
|
|
SDL_Quit();
|
|
return 0;
|
|
}
|
|
|
|
/* vi: set ts=4 sw=4 expandtab: */
|
|
|