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/*
SCREENLIB: A framebuffer library based on the SDL library
Copyright (C) 1997-2021 Sam Lantinga <slouken@libsdl.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "SDL.h"
#include "pixel.h"
void PutPixel1(Uint8 *screen_loc, SDL_Surface *screen, Uint32 pixel) {
*((Uint8 *)screen_loc) = pixel;
}
void PutPixel2(Uint8 *screen_loc, SDL_Surface *screen, Uint32 pixel) {
*((Uint16 *)screen_loc) = pixel;
}
void PutPixel3(Uint8 *screen_loc, SDL_Surface *screen, Uint32 pixel) {
int shift;
/* Gack - slow, but endian correct */
shift = screen->format->Rshift;
*(screen_loc+shift/8) = pixel>>shift;
shift = screen->format->Gshift;
*(screen_loc+shift/8) = pixel>>shift;
shift = screen->format->Bshift;
*(screen_loc+shift/8) = pixel>>shift;
}
void PutPixel4(Uint8 *screen_loc, SDL_Surface *screen, Uint32 pixel) {
*((Uint32 *)screen_loc) = pixel;
}
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