164 lines
5.2 KiB
C
164 lines
5.2 KiB
C
/*
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* Glide64 - Glide video plugin for Nintendo 64 emulators.
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* Copyright (c) 2002 Dave2001
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* Copyright (c) 2003-2009 Sergey 'Gonetz' Lipski
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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 2 of the License, or
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* 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, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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//****************************************************************
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//
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// Glide64 - Glide Plugin for Nintendo 64 emulators
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// Project started on December 29th, 2001
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//
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// Authors:
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// Dave2001, original author, founded the project in 2001, left it in 2002
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// Gugaman, joined the project in 2002, left it in 2002
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// Sergey 'Gonetz' Lipski, joined the project in 2002, main author since fall of 2002
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// Hiroshi 'KoolSmoky' Morii, joined the project in 2007
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//
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//****************************************************************
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//
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// To modify Glide64:
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// * Write your name and (optional)email, commented by your work, so I know who did it, and so that you can find which parts you modified when it comes time to send it to me.
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// * Do NOT send me the whole project or file that you modified. Take out your modified code sections, and tell me where to put them. If people sent the whole thing, I would have many different versions, but no idea how to combine them all.
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//
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//****************************************************************
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//
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// vertex - loads vertices
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//
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static void uc1_vertex()
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{
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int v0 = (rdp.cmd0 >> 17) & 0x7F; // Current vertex
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int n = (rdp.cmd0 >> 10) & 0x3F; // Number to copy
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rsp_vertex(v0, n);
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}
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//
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// tri1 - renders a triangle
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//
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static void uc1_tri1()
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{
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if (rdp.skip_drawing)
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{
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WriteTrace(TraceRDP, TraceDebug, "uc1:tri1. skipped");
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return;
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}
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WriteTrace(TraceRDP, TraceDebug, "uc1:tri1 #%d - %d, %d, %d - %08lx - %08lx", rdp.tri_n,
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((rdp.cmd1 >> 17) & 0x7F),
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((rdp.cmd1 >> 9) & 0x7F),
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((rdp.cmd1 >> 1) & 0x7F), rdp.cmd0, rdp.cmd1);
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VERTEX *v[3] = {
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&rdp.vtx[(rdp.cmd1 >> 17) & 0x7F],
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&rdp.vtx[(rdp.cmd1 >> 9) & 0x7F],
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&rdp.vtx[(rdp.cmd1 >> 1) & 0x7F]
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};
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rsp_tri1(v);
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}
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static void uc1_tri2()
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{
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if (rdp.skip_drawing)
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{
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WriteTrace(TraceRDP, TraceDebug, "uc1:tri2. skipped");
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return;
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}
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WriteTrace(TraceRDP, TraceDebug, "uc1:tri2");
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WriteTrace(TraceRDP, TraceDebug, " #%d, #%d - %d, %d, %d - %d, %d, %d", rdp.tri_n, rdp.tri_n + 1,
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((rdp.cmd0 >> 17) & 0x7F),
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((rdp.cmd0 >> 9) & 0x7F),
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((rdp.cmd0 >> 1) & 0x7F),
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((rdp.cmd1 >> 17) & 0x7F),
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((rdp.cmd1 >> 9) & 0x7F),
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((rdp.cmd1 >> 1) & 0x7F));
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VERTEX *v[6] = {
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&rdp.vtx[(rdp.cmd0 >> 17) & 0x7F],
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&rdp.vtx[(rdp.cmd0 >> 9) & 0x7F],
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&rdp.vtx[(rdp.cmd0 >> 1) & 0x7F],
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&rdp.vtx[(rdp.cmd1 >> 17) & 0x7F],
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&rdp.vtx[(rdp.cmd1 >> 9) & 0x7F],
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&rdp.vtx[(rdp.cmd1 >> 1) & 0x7F]
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};
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rsp_tri2(v);
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}
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static void uc1_line3d()
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{
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if (!g_settings->force_quad3d && ((rdp.cmd1 & 0xFF000000) == 0) && ((rdp.cmd0 & 0x00FFFFFF) == 0))
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{
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uint16_t width = (uint16_t)(rdp.cmd1 & 0xFF) + 3;
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WriteTrace(TraceRDP, TraceDebug, "uc1:line3d width: %d #%d, #%d - %d, %d", width, rdp.tri_n, rdp.tri_n + 1,
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(rdp.cmd1 >> 17) & 0x7F,
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(rdp.cmd1 >> 9) & 0x7F);
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VERTEX *v[3] = {
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&rdp.vtx[(rdp.cmd1 >> 17) & 0x7F],
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&rdp.vtx[(rdp.cmd1 >> 9) & 0x7F],
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&rdp.vtx[(rdp.cmd1 >> 9) & 0x7F]
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};
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uint32_t cull_mode = (rdp.flags & CULLMASK) >> CULLSHIFT;
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rdp.flags |= CULLMASK;
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rdp.update |= UPDATE_CULL_MODE;
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rsp_tri1(v, width);
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rdp.flags ^= CULLMASK;
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rdp.flags |= cull_mode << CULLSHIFT;
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rdp.update |= UPDATE_CULL_MODE;
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}
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else
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{
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WriteTrace(TraceRDP, TraceDebug, "uc1:quad3d #%d, #%d", rdp.tri_n, rdp.tri_n + 1);
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VERTEX *v[6] = {
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&rdp.vtx[(rdp.cmd1 >> 25) & 0x7F],
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&rdp.vtx[(rdp.cmd1 >> 17) & 0x7F],
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&rdp.vtx[(rdp.cmd1 >> 9) & 0x7F],
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&rdp.vtx[(rdp.cmd1 >> 1) & 0x7F],
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&rdp.vtx[(rdp.cmd1 >> 25) & 0x7F],
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&rdp.vtx[(rdp.cmd1 >> 9) & 0x7F]
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};
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rsp_tri2(v);
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}
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}
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uint32_t branch_dl = 0;
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static void uc1_rdphalf_1()
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{
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WriteTrace(TraceRDP, TraceDebug, "uc1:rdphalf_1");
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branch_dl = rdp.cmd1;
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rdphalf_1();
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}
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static void uc1_branch_z()
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{
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uint32_t addr = segoffset(branch_dl);
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WriteTrace(TraceRDP, TraceDebug, "uc1:branch_less_z, addr: %08lx", addr);
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uint32_t vtx = (rdp.cmd0 & 0xFFF) >> 1;
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if (fabs(rdp.vtx[vtx].z) <= (rdp.cmd1/*&0xFFFF*/))
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{
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rdp.pc[rdp.pc_i] = addr;
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}
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}
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