From 5a079a2d114f96d4847d1ee305d5b7c16eeec50e Mon Sep 17 00:00:00 2001 From: 3gg <3gg@shellblade.net> Date: Sat, 27 Dec 2025 12:03:39 -0800 Subject: Initial commit --- .../src/video/offscreen/SDL_offscreenframebuffer.c | 79 ++++++++++++++++++++++ 1 file changed, 79 insertions(+) create mode 100644 contrib/SDL-3.2.8/src/video/offscreen/SDL_offscreenframebuffer.c (limited to 'contrib/SDL-3.2.8/src/video/offscreen/SDL_offscreenframebuffer.c') diff --git a/contrib/SDL-3.2.8/src/video/offscreen/SDL_offscreenframebuffer.c b/contrib/SDL-3.2.8/src/video/offscreen/SDL_offscreenframebuffer.c new file mode 100644 index 0000000..e7f6103 --- /dev/null +++ b/contrib/SDL-3.2.8/src/video/offscreen/SDL_offscreenframebuffer.c @@ -0,0 +1,79 @@ +/* + Simple DirectMedia Layer + Copyright (C) 1997-2025 Sam Lantinga + + 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, subject to the following restrictions: + + 1. The origin of this software must not be misrepresented; you must not + claim that you wrote the original software. If you use this software + in a product, an acknowledgment in the product documentation would be + appreciated but is not required. + 2. Altered source versions must be plainly marked as such, and must not be + misrepresented as being the original software. + 3. This notice may not be removed or altered from any source distribution. +*/ +#include "SDL_internal.h" + +#ifdef SDL_VIDEO_DRIVER_OFFSCREEN + +#include "../SDL_sysvideo.h" +#include "../../SDL_properties_c.h" +#include "SDL_offscreenframebuffer_c.h" + +#define OFFSCREEN_SURFACE "SDL.internal.window.surface" + + +bool SDL_OFFSCREEN_CreateWindowFramebuffer(SDL_VideoDevice *_this, SDL_Window *window, SDL_PixelFormat *format, void **pixels, int *pitch) +{ + SDL_Surface *surface; + const SDL_PixelFormat surface_format = SDL_PIXELFORMAT_XRGB8888; + int w, h; + + // Create a new framebuffer + SDL_GetWindowSizeInPixels(window, &w, &h); + surface = SDL_CreateSurface(w, h, surface_format); + if (!surface) { + return false; + } + + // Save the info and return! + SDL_SetSurfaceProperty(SDL_GetWindowProperties(window), OFFSCREEN_SURFACE, surface); + *format = surface_format; + *pixels = surface->pixels; + *pitch = surface->pitch; + + return true; +} + +bool SDL_OFFSCREEN_UpdateWindowFramebuffer(SDL_VideoDevice *_this, SDL_Window *window, const SDL_Rect *rects, int numrects) +{ + static int frame_number; + SDL_Surface *surface; + + surface = (SDL_Surface *)SDL_GetPointerProperty(SDL_GetWindowProperties(window), OFFSCREEN_SURFACE, NULL); + if (!surface) { + return SDL_SetError("Couldn't find offscreen surface for window"); + } + + // Send the data to the display + if (SDL_GetHintBoolean(SDL_HINT_VIDEO_OFFSCREEN_SAVE_FRAMES, false)) { + char file[128]; + (void)SDL_snprintf(file, sizeof(file), "SDL_window%" SDL_PRIu32 "-%8.8d.bmp", + SDL_GetWindowID(window), ++frame_number); + SDL_SaveBMP(surface, file); + } + return true; +} + +void SDL_OFFSCREEN_DestroyWindowFramebuffer(SDL_VideoDevice *_this, SDL_Window *window) +{ + SDL_ClearProperty(SDL_GetWindowProperties(window), OFFSCREEN_SURFACE); +} + +#endif // SDL_VIDEO_DRIVER_OFFSCREEN -- cgit v1.2.3