/* ************************************************************************** */
/*                                                                            */
/*  ML_pixel.c                                                                */
/*  | Project : libmonochrome                                                 */
/*                                                                            */
/*  By: Pierre "PierrotLL" Le Gall <legallpierre89@gmail.com>                 */
/*  Last updated: 2011/11/22                                                  */
/*                                                                            */
/* ************************************************************************** */

#include <monochrome/internals.h>

void ML_pixel(int x, int y, ML_Color color)
{
	if (x & ~127 || y & ~63)
		return;

	char *vram = ML_vram_xy(x, y);
	int bit = 128 >> (x & 7);
	switch (color)
	{
		case ML_BLACK:
			*vram |= bit;
			break;
		case ML_WHITE:
			*vram &= ~bit;
			break;
		case ML_XOR:
			*vram ^= bit;
			break;
		case ML_CHECKER:
			if ((y & 1) ^ (x & 1))
				*vram &= ~bit;
			else
				*vram |= bit;
			break;
		default:
			break;
	}
}