project64/Source/Project64-video/ucode04.cpp

/***************************************************************************
*                                                                          *
* Project64-video - A Nintendo 64 gfx plugin.                              *
* http://www.pj64-emu.com/                                                 *
* Copyright (C) 2017 Project64. All rights reserved.                       *
* Copyright (C) 2003-2009  Sergey 'Gonetz' Lipski                          *
* Copyright (C) 2002 Dave2001                                              *
*                                                                          *
* License:                                                                 *
* GNU/GPLv2 http://www.gnu.org/licenses/gpl-2.0.html                       *
* version 2 of the License, or (at your option) any later version.         *
*                                                                          *
****************************************************************************/
#pragma once

static void uc4_vertex()
{
    int v0 = 0;     // Current vertex
    int n = ((rdp.cmd0 >> 4) & 0xFFF) / 33 + 1; // Number of vertices to copy
    rsp_vertex(v0, n);
}

static void uc4_tri1()
{
    int v1 = ((rdp.cmd1 >> 16) & 0xFF) / 5;
    int v2 = ((rdp.cmd1 >> 8) & 0xFF) / 5;
    int v3 = (rdp.cmd1 & 0xFF) / 5;
    WriteTrace(TraceRDP, TraceDebug, "uc4:tri1 #%d - %d, %d, %d", rdp.tri_n,
        v1, v2, v3);

    VERTEX *v[3] = {
        &rdp.vtx[v1],
        &rdp.vtx[v2],
        &rdp.vtx[v3]
    };

    rsp_tri1(v);
}

static void uc4_quad3d()
{
    WriteTrace(TraceRDP, TraceDebug, "uc4:quad3d #%d, #%d", rdp.tri_n, rdp.tri_n + 1);

    VERTEX *v[6] = {
        &rdp.vtx[((rdp.cmd1 >> 24) & 0xFF) / 5],
        &rdp.vtx[((rdp.cmd1 >> 16) & 0xFF) / 5],
        &rdp.vtx[((rdp.cmd1 >> 8) & 0xFF) / 5],
        &rdp.vtx[((rdp.cmd1 >> 24) & 0xFF) / 5],
        &rdp.vtx[((rdp.cmd1 >> 8) & 0xFF) / 5],
        &rdp.vtx[(rdp.cmd1 & 0xFF) / 5]
    };

    rsp_tri2(v);
}