mirror of https://github.com/libsdl-org/SDL
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
50 lines
1.8 KiB
C
50 lines
1.8 KiB
C
/*
|
|
Simple DirectMedia Layer
|
|
Copyright (C) 1997-2025 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, 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.
|
|
*/
|
|
|
|
/*
|
|
This is for generating thumbnails and videos of examples. Just include it
|
|
temporarily and let it override SDL_RenderPresent, etc, and it'll dump each
|
|
frame rendered to a new .png file.
|
|
*/
|
|
|
|
static bool SAVERENDERING_SDL_RenderPresent(SDL_Renderer *renderer)
|
|
{
|
|
static unsigned int framenum = 0;
|
|
SDL_Surface *surface = SDL_RenderReadPixels(renderer, NULL);
|
|
if (!surface) {
|
|
SDL_LogError(SDL_LOG_CATEGORY_RENDER, "Failed to read pixels for frame #%u! (%s)", framenum, SDL_GetError());
|
|
} else {
|
|
char fname[64];
|
|
SDL_snprintf(fname, sizeof (fname), "frame%05u.png", framenum);
|
|
if (!SDL_SavePNG(surface, fname)) {
|
|
SDL_LogError(SDL_LOG_CATEGORY_RENDER, "Failed to save png for frame #%u! (%s)", framenum, SDL_GetError());
|
|
}
|
|
SDL_DestroySurface(surface);
|
|
}
|
|
|
|
framenum++;
|
|
|
|
return SDL_RenderPresent(renderer);
|
|
}
|
|
|
|
#define SDL_RenderPresent SAVERENDERING_SDL_RenderPresent
|
|
|