Mercurial > sdl-ios-xcode
view test/testfill.c @ 5133:ec13e48ee0d9
Fixed bug #1112 (retina display support)
Vittorio Giovara 2011-02-01 02:21:50 PST
with the attached patch, the opengles context will always use the maximum
screensize available; this is particularly useful for supporting retina display
on latest iphone.
please note: Apple documentation warns that using the "upscaled" gl context
actually uses more memory and bandwitdh, so it might be worth to let the user
decide whether to disable it or not, either with a flag or a sdl function...
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Tue, 01 Feb 2011 08:54:34 -0800 |
parents | 5ea08f1c29d0 |
children |
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/* Simple program: Fill the screen with colors as fast as possible */ #include <stdlib.h> #include <stdio.h> #include <string.h> #include <time.h> #include "SDL.h" /* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */ static void quit(int rc) { SDL_Quit(); exit(rc); } int main(int argc, char *argv[]) { SDL_Surface *screen; int width, height; Uint8 video_bpp; Uint32 videoflags; Uint32 colors[3]; int i, done; SDL_Event event; Uint32 then, now, frames; /* Initialize SDL */ if (SDL_Init(SDL_INIT_VIDEO) < 0) { fprintf(stderr, "Couldn't initialize SDL: %s\n", SDL_GetError()); return (1); } width = 640; height = 480; video_bpp = 8; videoflags = 0; while (argc > 1) { --argc; if (strcmp(argv[argc - 1], "-width") == 0) { width = atoi(argv[argc]); --argc; } else if (strcmp(argv[argc - 1], "-height") == 0) { height = atoi(argv[argc]); --argc; } else if (strcmp(argv[argc - 1], "-bpp") == 0) { video_bpp = atoi(argv[argc]); --argc; } else if (strcmp(argv[argc], "-fullscreen") == 0) { videoflags ^= SDL_FULLSCREEN; } else { fprintf(stderr, "Usage: %s [-width N] [-height N] [-bpp N] [-fullscreen]\n", argv[0]); quit(1); } } /* Set video mode */ screen = SDL_SetVideoMode(width, height, video_bpp, 0); if (!screen) { fprintf(stderr, "Couldn't set %dx%d video mode: %s\n", width, height, SDL_GetError()); quit(2); } /* Get the colors */ colors[0] = SDL_MapRGB(screen->format, 0xFF, 0x00, 0x00); colors[1] = SDL_MapRGB(screen->format, 0x00, 0xFF, 0x00); colors[2] = SDL_MapRGB(screen->format, 0x00, 0x00, 0xFF); /* Loop, filling and waiting for a keystroke */ frames = 0; then = SDL_GetTicks(); done = 0; while (!done) { /* Check for events */ ++frames; while (SDL_PollEvent(&event)) { switch (event.type) { case SDL_MOUSEBUTTONDOWN: SDL_WarpMouse(screen->w / 2, screen->h / 2); break; case SDL_KEYDOWN: /* Any keypress quits the app... */ case SDL_QUIT: done = 1; break; default: break; } } SDL_FillRect(screen, NULL, colors[frames%3]); SDL_Flip(screen); } /* Print out some timing information */ now = SDL_GetTicks(); if (now > then) { double fps = ((double) frames * 1000) / (now - then); printf("%2.2f frames per second\n", fps); } SDL_Quit(); return (0); }