cscg22-gearboy

CSCG 2022 Challenge 'Gearboy'
git clone https://git.sinitax.com/sinitax/cscg22-gearboy
Log | Files | Refs | sfeed.txt

SDL_nullframebuffer.c (2912B)

      1/*
      2  Simple DirectMedia Layer
      3  Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
      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 be
     16     appreciated but is not required.
     17  2. Altered source versions must be plainly marked as such, and must not be
     18     misrepresented as being the original software.
     19  3. This notice may not be removed or altered from any source distribution.
     20*/
     21#include "../../SDL_internal.h"
     22
     23#if SDL_VIDEO_DRIVER_DUMMY
     24
     25#include "../SDL_sysvideo.h"
     26#include "SDL_nullframebuffer_c.h"
     27
     28
     29#define DUMMY_SURFACE   "_SDL_DummySurface"
     30
     31int SDL_DUMMY_CreateWindowFramebuffer(_THIS, SDL_Window * window, Uint32 * format, void ** pixels, int *pitch)
     32{
     33    SDL_Surface *surface;
     34    const Uint32 surface_format = SDL_PIXELFORMAT_RGB888;
     35    int w, h;
     36    int bpp;
     37    Uint32 Rmask, Gmask, Bmask, Amask;
     38
     39    /* Free the old framebuffer surface */
     40    surface = (SDL_Surface *) SDL_GetWindowData(window, DUMMY_SURFACE);
     41    SDL_FreeSurface(surface);
     42
     43    /* Create a new one */
     44    SDL_PixelFormatEnumToMasks(surface_format, &bpp, &Rmask, &Gmask, &Bmask, &Amask);
     45    SDL_GetWindowSize(window, &w, &h);
     46    surface = SDL_CreateRGBSurface(0, w, h, bpp, Rmask, Gmask, Bmask, Amask);
     47    if (!surface) {
     48        return -1;
     49    }
     50
     51    /* Save the info and return! */
     52    SDL_SetWindowData(window, DUMMY_SURFACE, surface);
     53    *format = surface_format;
     54    *pixels = surface->pixels;
     55    *pitch = surface->pitch;
     56    return 0;
     57}
     58
     59int SDL_DUMMY_UpdateWindowFramebuffer(_THIS, SDL_Window * window, const SDL_Rect * rects, int numrects)
     60{
     61    static int frame_number;
     62    SDL_Surface *surface;
     63
     64    surface = (SDL_Surface *) SDL_GetWindowData(window, DUMMY_SURFACE);
     65    if (!surface) {
     66        return SDL_SetError("Couldn't find dummy surface for window");
     67    }
     68
     69    /* Send the data to the display */
     70    if (SDL_getenv("SDL_VIDEO_DUMMY_SAVE_FRAMES")) {
     71        char file[128];
     72        SDL_snprintf(file, sizeof(file), "SDL_window%d-%8.8d.bmp",
     73                     SDL_GetWindowID(window), ++frame_number);
     74        SDL_SaveBMP(surface, file);
     75    }
     76    return 0;
     77}
     78
     79void SDL_DUMMY_DestroyWindowFramebuffer(_THIS, SDL_Window * window)
     80{
     81    SDL_Surface *surface;
     82
     83    surface = (SDL_Surface *) SDL_SetWindowData(window, DUMMY_SURFACE, NULL);
     84    SDL_FreeSurface(surface);
     85}
     86
     87#endif /* SDL_VIDEO_DRIVER_DUMMY */
     88
     89/* vi: set ts=4 sw=4 expandtab: */