/*  V2MemTest - A CLI Tool to test & fix Voodoo² TMU System
*   Copyright (C) 2026  ChaCha
*
*   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 3 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, see <https://www.gnu.org/licenses/>.
*/

#include "glide.h"
#include "sst1init.h"

#include "Draw.h"

#define XY_ONE (1<<SST_XY_FRACBITS)

void
drawTriangle(	const SstRegs *sst, 
				const int x, 
				const int y, 
				const int tSize)
{
	ISET(sst->vA.x,x);
	ISET(sst->vA.y,y);
	ISET(sst->vB.x,x+XY_ONE*tSize);
	ISET(sst->vB.y,y);
	ISET(sst->vC.x,x);
	ISET(sst->vC.y,y+XY_ONE*tSize);
	ISET(sst->s,0);
	ISET(sst->t,0);
	ISET(sst->w,0);
	ISET(sst->dsdx,1<<SST_ST_FRACBITS);
	ISET(sst->dtdx,0);
	ISET(sst->dwdx,0);
	ISET(sst->dsdy,0);
	ISET(sst->dtdy,1<<SST_ST_FRACBITS);
	ISET(sst->dwdy,0);
	ISET(sst->triangleCMD,0);
	ISET(sst->vB.x, (x<<SST_XY_FRACBITS));
	ISET(sst->vB.y, ((y+tSize)<<SST_XY_FRACBITS));
	ISET(sst->triangleCMD, 0xFFFFFFFF);
}