269 lines
10 KiB
C
269 lines
10 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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// Created by Gonetz, 2008
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//
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//****************************************************************
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/******************Turbo3D microcode*************************/
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struct t3dGlobState {
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uint16_t pad0;
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uint16_t perspNorm;
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uint32_t flag;
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uint32_t othermode0;
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uint32_t othermode1;
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uint32_t segBases[16];
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/* the viewport to use */
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short vsacle1;
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short vsacle0;
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short vsacle3;
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short vsacle2;
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short vtrans1;
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short vtrans0;
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short vtrans3;
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short vtrans2;
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uint32_t rdpCmds;
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};
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struct t3dState {
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uint32_t renderState; /* render state */
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uint32_t textureState; /* texture state */
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uint8_t flag;
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uint8_t triCount; /* how many tris? */
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uint8_t vtxV0; /* where to load verts? */
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uint8_t vtxCount; /* how many verts? */
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uint32_t rdpCmds; /* ptr (segment address) to RDP DL */
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uint32_t othermode0;
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uint32_t othermode1;
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};
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struct t3dTriN{
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uint8_t flag, v2, v1, v0; /* flag is which one for flat shade */
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};
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static void t3dProcessRDP(uint32_t a)
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{
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if (a)
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{
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rdp.LLE = 1;
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rdp.cmd0 = ((uint32_t*)gfx.RDRAM)[a++];
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rdp.cmd1 = ((uint32_t*)gfx.RDRAM)[a++];
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while (rdp.cmd0 + rdp.cmd1) {
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gfx_instruction[0][rdp.cmd0 >> 24]();
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rdp.cmd0 = ((uint32_t*)gfx.RDRAM)[a++];
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rdp.cmd1 = ((uint32_t*)gfx.RDRAM)[a++];
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uint32_t cmd = rdp.cmd0 >> 24;
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if (cmd == 0xE4 || cmd == 0xE5)
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{
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rdp.cmd2 = ((uint32_t*)gfx.RDRAM)[a++];
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rdp.cmd3 = ((uint32_t*)gfx.RDRAM)[a++];
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}
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}
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rdp.LLE = 0;
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}
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}
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static void t3dLoadGlobState(uint32_t pgstate)
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{
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t3dGlobState *gstate = (t3dGlobState*)&gfx.RDRAM[segoffset(pgstate)];
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WriteTrace(TraceRDP, TraceDebug, "Global state. pad0: %04lx, perspNorm: %04lx, flag: %08lx", gstate->pad0, gstate->perspNorm, gstate->flag);
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rdp.cmd0 = gstate->othermode0;
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rdp.cmd1 = gstate->othermode1;
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rdp_setothermode();
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for (int s = 0; s < 16; s++)
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{
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rdp.segment[s] = gstate->segBases[s];
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WriteTrace(TraceRDP, TraceDebug, "segment: %08lx -> seg%d", rdp.segment[s], s);
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}
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short scale_x = gstate->vsacle0 / 4;
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short scale_y = gstate->vsacle1 / 4;;
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short scale_z = gstate->vsacle2;
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short trans_x = gstate->vtrans0 / 4;
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short trans_y = gstate->vtrans1 / 4;
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short trans_z = gstate->vtrans2;
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rdp.view_scale[0] = scale_x * rdp.scale_x;
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rdp.view_scale[1] = -scale_y * rdp.scale_y;
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rdp.view_scale[2] = 32.0f * scale_z;
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rdp.view_trans[0] = trans_x * rdp.scale_x;
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rdp.view_trans[1] = trans_y * rdp.scale_y;
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rdp.view_trans[2] = 32.0f * trans_z;
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rdp.update |= UPDATE_VIEWPORT;
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WriteTrace(TraceRDP, TraceDebug, "viewport scale(%d, %d, %d), trans(%d, %d, %d)", scale_x, scale_y, scale_z,
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trans_x, trans_y, trans_z);
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t3dProcessRDP(segoffset(gstate->rdpCmds) >> 2);
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}
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static void t3d_vertex(uint32_t addr, uint32_t v0, uint32_t n)
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{
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float x, y, z;
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rdp.v0 = v0; // Current vertex
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rdp.vn = n; // Number of vertices to copy
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n <<= 4;
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for (uint32_t i = 0; i < n; i += 16)
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{
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VERTEX *v = &rdp.vtx[v0 + (i >> 4)];
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x = (float)((short*)gfx.RDRAM)[(((addr + i) >> 1) + 0) ^ 1];
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y = (float)((short*)gfx.RDRAM)[(((addr + i) >> 1) + 1) ^ 1];
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z = (float)((short*)gfx.RDRAM)[(((addr + i) >> 1) + 2) ^ 1];
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v->flags = ((uint16_t*)gfx.RDRAM)[(((addr + i) >> 1) + 3) ^ 1];
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v->ou = 2.0f * (float)((short*)gfx.RDRAM)[(((addr + i) >> 1) + 4) ^ 1];
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v->ov = 2.0f * (float)((short*)gfx.RDRAM)[(((addr + i) >> 1) + 5) ^ 1];
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v->uv_scaled = 0;
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v->r = ((uint8_t*)gfx.RDRAM)[(addr + i + 12) ^ 3];
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v->g = ((uint8_t*)gfx.RDRAM)[(addr + i + 13) ^ 3];
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v->b = ((uint8_t*)gfx.RDRAM)[(addr + i + 14) ^ 3];
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v->a = ((uint8_t*)gfx.RDRAM)[(addr + i + 15) ^ 3];
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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->shade_mod = 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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WriteTrace(TraceRDP, TraceVerbose, "v%d - x: %f, y: %f, z: %f, w: %f, u: %f, v: %f, f: %f, z_w: %f, r=%d, g=%d, b=%d, a=%d", i >> 4, v->x, v->y, v->z, v->w, v->ou*rdp.tiles[rdp.cur_tile].s_scale, v->ov*rdp.tiles[rdp.cur_tile].t_scale, v->f, v->z_w, v->r, v->g, v->b, v->a);
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}
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}
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static void t3dLoadObject(uint32_t pstate, uint32_t pvtx, uint32_t ptri)
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{
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WriteTrace(TraceRDP, TraceDebug, "Loading Turbo3D object");
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t3dState *ostate = (t3dState*)&gfx.RDRAM[segoffset(pstate)];
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rdp.cur_tile = (ostate->textureState) & 7;
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WriteTrace(TraceRDP, TraceDebug, "tile: %d", rdp.cur_tile);
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if (rdp.tiles[rdp.cur_tile].s_scale < 0.001f)
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rdp.tiles[rdp.cur_tile].s_scale = 0.015625;
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if (rdp.tiles[rdp.cur_tile].t_scale < 0.001f)
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rdp.tiles[rdp.cur_tile].t_scale = 0.015625;
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WriteTrace(TraceRDP, TraceVerbose, "renderState: %08lx, textureState: %08lx, othermode0: %08lx, othermode1: %08lx, rdpCmds: %08lx, triCount : %d, v0: %d, vn: %d", ostate->renderState, ostate->textureState,
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ostate->othermode0, ostate->othermode1, ostate->rdpCmds, ostate->triCount, ostate->vtxV0, ostate->vtxCount);
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rdp.cmd0 = ostate->othermode0;
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rdp.cmd1 = ostate->othermode1;
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rdp_setothermode();
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rdp.cmd1 = ostate->renderState;
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uc0_setgeometrymode();
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if (!(ostate->flag & 1)) //load matrix
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{
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uint32_t addr = segoffset(pstate + sizeof(t3dState)) & BMASK;
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load_matrix(rdp.combined, addr);
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WriteTrace(TraceRDP, TraceVerbose, "{%f,%f,%f,%f}", rdp.combined[0][0], rdp.combined[0][1], rdp.combined[0][2], rdp.combined[0][3]);
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WriteTrace(TraceRDP, TraceVerbose, "{%f,%f,%f,%f}", rdp.combined[1][0], rdp.combined[1][1], rdp.combined[1][2], rdp.combined[1][3]);
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WriteTrace(TraceRDP, TraceVerbose, "{%f,%f,%f,%f}", rdp.combined[2][0], rdp.combined[2][1], rdp.combined[2][2], rdp.combined[2][3]);
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WriteTrace(TraceRDP, TraceVerbose, "{%f,%f,%f,%f}", rdp.combined[3][0], rdp.combined[3][1], rdp.combined[3][2], rdp.combined[3][3]);
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}
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rdp.geom_mode &= ~0x00020000;
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rdp.geom_mode |= 0x00000200;
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if (pvtx) //load vtx
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t3d_vertex(segoffset(pvtx) & BMASK, ostate->vtxV0, ostate->vtxCount);
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t3dProcessRDP(segoffset(ostate->rdpCmds) >> 2);
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if (ptri)
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{
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update();
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uint32_t a = segoffset(ptri);
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for (int t = 0; t < ostate->triCount; t++)
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{
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t3dTriN * tri = (t3dTriN*)&gfx.RDRAM[a];
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a += 4;
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WriteTrace(TraceRDP, TraceDebug, "tri #%d - %d, %d, %d", t, tri->v0, tri->v1, tri->v2);
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VERTEX *v[3] = { &rdp.vtx[tri->v0], &rdp.vtx[tri->v1], &rdp.vtx[tri->v2] };
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if (cull_tri(v))
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rdp.tri_n++;
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else
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{
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draw_tri(v);
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rdp.tri_n++;
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}
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}
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}
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}
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static void Turbo3D()
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{
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WriteTrace(TraceRDP, TraceDebug, "Start Turbo3D microcode");
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g_settings->ucode = ucode_Fast3D;
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uint32_t a = 0, pgstate = 0, pstate = 0, pvtx = 0, ptri = 0;
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do {
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a = rdp.pc[rdp.pc_i] & BMASK;
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pgstate = ((uint32_t*)gfx.RDRAM)[a >> 2];
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pstate = ((uint32_t*)gfx.RDRAM)[(a >> 2) + 1];
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pvtx = ((uint32_t*)gfx.RDRAM)[(a >> 2) + 2];
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ptri = ((uint32_t*)gfx.RDRAM)[(a >> 2) + 3];
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WriteTrace(TraceRDP, TraceDebug, "GlobalState: %08lx, Object: %08lx, Vertices: %08lx, Triangles: %08lx", pgstate, pstate, pvtx, ptri);
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if (!pstate)
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{
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rdp.halt = 1;
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break;
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}
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if (pgstate)
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t3dLoadGlobState(pgstate);
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t3dLoadObject(pstate, pvtx, ptri);
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// Go to the next instruction
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rdp.pc[rdp.pc_i] += 16;
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} while (pstate);
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// rdp_fullsync();
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g_settings->ucode = ucode_Turbo3d;
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}
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