180 lines
5.4 KiB
C
180 lines
5.4 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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// Oct 2002 Created by Gonetz (Gonetz@ngs.ru)
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// Info about this ucode is taken from TR64 OGL plugin. Thanks, Icepir8!
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// Oct 2003 Modified by Gonetz (Gonetz@ngs.ru)
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// Bugs fixed with help from glN64 sources. Thanks, Orkin!
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//****************************************************************
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wxUint32 pd_col_addr = 0;
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static void uc7_colorbase ()
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{
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LRDP("uc7_colorbase\n");
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pd_col_addr = segoffset(rdp.cmd1);
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}
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typedef struct
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{
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short y;
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short x;
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wxUint16 idx;
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short z;
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short t;
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short s;
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} vtx_uc7;
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static void uc7_vertex ()
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{
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if (rdp.update & UPDATE_MULT_MAT)
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{
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rdp.update ^= UPDATE_MULT_MAT;
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MulMatrices(rdp.model, rdp.proj, rdp.combined);
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}
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// This is special, not handled in update()
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if (rdp.update & UPDATE_LIGHTS)
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{
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rdp.update ^= UPDATE_LIGHTS;
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// Calculate light vectors
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for (wxUint32 l=0; l<rdp.num_lights; l++)
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{
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InverseTransformVector(&rdp.light[l].dir_x, rdp.light_vector[l], rdp.model);
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NormalizeVector (rdp.light_vector[l]);
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}
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}
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wxUint32 addr = segoffset(rdp.cmd1);
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wxUint32 v0, i, n;
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float x, y, z;
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rdp.v0 = v0 = (rdp.cmd0 & 0x0F0000) >> 16;
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rdp.vn = n = ((rdp.cmd0 & 0xF00000) >> 20) + 1;
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FRDP ("uc7:vertex n: %d, v0: %d, from: %08lx\n", n, v0, addr);
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vtx_uc7 *vertex = (vtx_uc7 *)&gfx.RDRAM[addr];
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for(i = 0; i < n; i++)
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{
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VERTEX *v = &rdp.vtx[v0 + i];
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x = (float)vertex->x;
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y = (float)vertex->y;
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z = (float)vertex->z;
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v->flags = 0;
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v->ou = (float)vertex->s;
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v->ov = (float)vertex->t;
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v->uv_scaled = 0;
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#ifdef EXTREME_LOGGING
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// FRDP ("before: v%d - x: %f, y: %f, z: %f, flags: %04lx, ou: %f, ov: %f\n", i>>4, x, y, z, v->flags, v->ou, v->ov);
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#endif
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v->x = x*rdp.combined[0][0] + y*rdp.combined[1][0] + z*rdp.combined[2][0] + rdp.combined[3][0];
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v->y = x*rdp.combined[0][1] + y*rdp.combined[1][1] + z*rdp.combined[2][1] + rdp.combined[3][1];
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v->z = x*rdp.combined[0][2] + y*rdp.combined[1][2] + z*rdp.combined[2][2] + rdp.combined[3][2];
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v->w = x*rdp.combined[0][3] + y*rdp.combined[1][3] + z*rdp.combined[2][3] + rdp.combined[3][3];
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if (fabs(v->w) < 0.001) v->w = 0.001f;
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v->oow = 1.0f / v->w;
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v->x_w = v->x * v->oow;
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v->y_w = v->y * v->oow;
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v->z_w = v->z * v->oow;
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v->uv_calculated = 0xFFFFFFFF;
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v->screen_translated = 0;
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v->scr_off = 0;
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if (v->x < -v->w) v->scr_off |= 1;
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if (v->x > v->w) v->scr_off |= 2;
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if (v->y < -v->w) v->scr_off |= 4;
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if (v->y > v->w) v->scr_off |= 8;
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if (v->w < 0.1f) v->scr_off |= 16;
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wxUint8 *color = &gfx.RDRAM[pd_col_addr + (vertex->idx & 0xff)];
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v->a = color[0];
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CalculateFog (v);
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if (rdp.geom_mode & 0x00020000)
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{
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v->vec[0] = (char)color[3];
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v->vec[1] = (char)color[2];
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v->vec[2] = (char)color[1];
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if (rdp.geom_mode & 0x80000)
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{
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calc_linear (v);
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#ifdef EXTREME_LOGGING
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FRDP ("calc linear: v%d - u: %f, v: %f\n", i>>4, v->ou, v->ov);
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#endif
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}
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else if (rdp.geom_mode & 0x40000)
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{
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calc_sphere (v);
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#ifdef EXTREME_LOGGING
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FRDP ("calc sphere: v%d - u: %f, v: %f\n", i>>4, v->ou, v->ov);
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#endif
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}
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NormalizeVector (v->vec);
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calc_light (v);
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}
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else
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{
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v->r = color[3];
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v->g = color[2];
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v->b = color[1];
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}
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#ifdef EXTREME_LOGGING
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FRDP ("v%d - x: %f, y: %f, z: %f, w: %f, u: %f, v: %f\n", i>>4, v->x, v->y, v->z, v->w, v->ou, v->ov);
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#endif
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vertex++;
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}
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}
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