51 lines
1.4 KiB
C
51 lines
1.4 KiB
C
/* V2MemTest - A CLI Tool to test & fix Voodoo² TMU System
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* Copyright (C) 2026 ChaCha
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include <glide.h>
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#include "sst1init.h"
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#include "Draw.h"
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#define XY_ONE (1<<SST_XY_FRACBITS)
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void
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drawTriangle( const SstRegs *sst,
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const int x,
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const int y,
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const int tSize)
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{
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ISET(sst->vA.x,x);
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ISET(sst->vA.y,y);
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ISET(sst->vB.x,x+XY_ONE*tSize);
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ISET(sst->vB.y,y);
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ISET(sst->vC.x,x);
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ISET(sst->vC.y,y+XY_ONE*tSize);
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ISET(sst->s,0);
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ISET(sst->t,0);
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ISET(sst->w,0);
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ISET(sst->dsdx,1<<SST_ST_FRACBITS);
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ISET(sst->dtdx,0);
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ISET(sst->dwdx,0);
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ISET(sst->dsdy,0);
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ISET(sst->dtdy,1<<SST_ST_FRACBITS);
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ISET(sst->dwdy,0);
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ISET(sst->triangleCMD,0);
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ISET(sst->vB.x, (x<<SST_XY_FRACBITS));
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ISET(sst->vB.y, ((y+tSize)<<SST_XY_FRACBITS));
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ISET(sst->triangleCMD, 0xFFFFFFFF);
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}
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