mirror of
https://github.com/Ryujinx/SDL.git
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91 lines
2.9 KiB
C
91 lines
2.9 KiB
C
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/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2019 Sam Lantinga <slouken@libsdl.org>
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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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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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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 be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#include "../../SDL_internal.h"
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#if SDL_VIDEO_DRIVER_OFFSCREEN
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#include "../SDL_sysvideo.h"
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#include "SDL_offscreenframebuffer_c.h"
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#define OFFSCREEN_SURFACE "_SDL_DummySurface"
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int SDL_OFFSCREEN_CreateWindowFramebuffer(_THIS, SDL_Window * window, Uint32 * format, void ** pixels, int *pitch)
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{
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SDL_Surface *surface;
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const Uint32 surface_format = SDL_PIXELFORMAT_RGB888;
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int w, h;
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int bpp;
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Uint32 Rmask, Gmask, Bmask, Amask;
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/* Free the old framebuffer surface */
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surface = (SDL_Surface *) SDL_GetWindowData(window, OFFSCREEN_SURFACE);
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SDL_FreeSurface(surface);
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/* Create a new one */
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SDL_PixelFormatEnumToMasks(surface_format, &bpp, &Rmask, &Gmask, &Bmask, &Amask);
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SDL_GetWindowSize(window, &w, &h);
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surface = SDL_CreateRGBSurface(0, w, h, bpp, Rmask, Gmask, Bmask, Amask);
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if (!surface) {
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return -1;
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}
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/* Save the info and return! */
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SDL_SetWindowData(window, OFFSCREEN_SURFACE, surface);
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*format = surface_format;
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*pixels = surface->pixels;
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*pitch = surface->pitch;
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return 0;
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}
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int SDL_OFFSCREEN_UpdateWindowFramebuffer(_THIS, SDL_Window * window, const SDL_Rect * rects, int numrects)
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{
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static int frame_number;
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SDL_Surface *surface;
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surface = (SDL_Surface *) SDL_GetWindowData(window, OFFSCREEN_SURFACE);
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if (!surface) {
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return SDL_SetError("Couldn't find offscreen surface for window");
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}
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/* Send the data to the display */
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if (SDL_getenv("SDL_VIDEO_OFFSCREEN_SAVE_FRAMES")) {
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char file[128];
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SDL_snprintf(file, sizeof(file), "SDL_window%d-%8.8d.bmp",
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SDL_GetWindowID(window), ++frame_number);
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SDL_SaveBMP(surface, file);
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}
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return 0;
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}
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void SDL_OFFSCREEN_DestroyWindowFramebuffer(_THIS, SDL_Window * window)
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{
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SDL_Surface *surface;
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surface = (SDL_Surface *) SDL_SetWindowData(window, OFFSCREEN_SURFACE, NULL);
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SDL_FreeSurface(surface);
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}
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#endif /* SDL_VIDEO_DRIVER_OFFSCREEN */
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/* vi: set ts=4 sw=4 expandtab: */
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