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project64/Source/Glide64/ucode05.h

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/*
* Glide64 - Glide video plugin for Nintendo 64 emulators.
* Copyright (c) 2002 Dave2001
* Copyright (c) 2003-2009 Sergey 'Gonetz' Lipski
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
//****************************************************************
//
// Glide64 - Glide Plugin for Nintendo 64 emulators
// Project started on December 29th, 2001
//
// Authors:
// Dave2001, original author, founded the project in 2001, left it in 2002
// Gugaman, joined the project in 2002, left it in 2002
// Sergey 'Gonetz' Lipski, joined the project in 2002, main author since fall of 2002
// Hiroshi 'KoolSmoky' Morii, joined the project in 2007
//
//****************************************************************
//
// To modify Glide64:
// * 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.
// * 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.
//
//****************************************************************
int cur_mtx = 0;
int billboarding = 0;
int vtx_last = 0;
wxUint32 dma_offset_mtx = 0;
wxUint32 dma_offset_vtx = 0;
static void uc5_dma_offsets ()
{
dma_offset_mtx = rdp.cmd0 & 0x00FFFFFF;
dma_offset_vtx = rdp.cmd1 & 0x00FFFFFF;
vtx_last = 0;
FRDP("uc5:dma_offsets - mtx: %08lx, vtx: %08lx\n", dma_offset_mtx, dma_offset_vtx);
}
static void uc5_matrix ()
{
// Use segment offset to get the address
wxUint32 addr = dma_offset_mtx + (segoffset(rdp.cmd1) & BMASK);
wxUint8 n = (wxUint8)((rdp.cmd0 >> 16) & 0xF);
wxUint8 multiply;
if (n == 0) //DKR
{
n = (wxUint8)((rdp.cmd0 >> 22) & 0x3);
multiply = 0;
}
else //JF
{
multiply = (wxUint8)((rdp.cmd0 >> 23) & 0x1);
}
cur_mtx = n;
FRDP("uc5:matrix - #%d, addr: %08lx\n", n, addr);
if (multiply)
{
DECLAREALIGN16VAR(m[4][4]);
load_matrix(m, addr);
DECLAREALIGN16VAR(m_src[4][4]);
memcpy (m_src, rdp.dkrproj[0], 64);
MulMatrices(m, m_src, rdp.dkrproj[n]);
}
else
{
load_matrix(rdp.dkrproj[n], addr);
}
rdp.update |= UPDATE_MULT_MAT;
#ifdef EXTREME_LOGGING
FRDP ("{%f,%f,%f,%f}\n", rdp.dkrproj[n][0][0], rdp.dkrproj[n][0][1], rdp.dkrproj[n][0][2], rdp.dkrproj[n][0][3]);
FRDP ("{%f,%f,%f,%f}\n", rdp.dkrproj[n][1][0], rdp.dkrproj[n][1][1], rdp.dkrproj[n][1][2], rdp.dkrproj[n][1][3]);
FRDP ("{%f,%f,%f,%f}\n", rdp.dkrproj[n][2][0], rdp.dkrproj[n][2][1], rdp.dkrproj[n][2][2], rdp.dkrproj[n][2][3]);
FRDP ("{%f,%f,%f,%f}\n", rdp.dkrproj[n][3][0], rdp.dkrproj[n][3][1], rdp.dkrproj[n][3][2], rdp.dkrproj[n][3][3]);
for (int i=0; i<3; i++)
{
FRDP ("proj %d\n", i);
FRDP ("{%f,%f,%f,%f}\n", rdp.dkrproj[i][0][0], rdp.dkrproj[i][0][1], rdp.dkrproj[i][0][2], rdp.dkrproj[i][0][3]);
FRDP ("{%f,%f,%f,%f}\n", rdp.dkrproj[i][1][0], rdp.dkrproj[i][1][1], rdp.dkrproj[i][1][2], rdp.dkrproj[i][1][3]);
FRDP ("{%f,%f,%f,%f}\n", rdp.dkrproj[i][2][0], rdp.dkrproj[i][2][1], rdp.dkrproj[i][2][2], rdp.dkrproj[i][2][3]);
FRDP ("{%f,%f,%f,%f}\n", rdp.dkrproj[i][3][0], rdp.dkrproj[i][3][1], rdp.dkrproj[i][3][2], rdp.dkrproj[i][3][3]);
}
#endif
}
static void uc5_vertex ()
{
wxUint32 addr = dma_offset_vtx + (segoffset(rdp.cmd1) & BMASK);
// | cccc cccc 1111 1??? 0000 0002 2222 2222 | cmd1 = address |
// c = vtx command
// 1 = method #1 of getting count
// 2 = method #2 of getting count
// ? = unknown, but used
// 0 = unused
int n = ((rdp.cmd0 >> 19) & 0x1F);// + 1;
if (settings.hacks&hack_Diddy)
n++;
if (rdp.cmd0 & 0x00010000)
{
if (billboarding)
vtx_last = 1;
}
else
vtx_last = 0;
int first = ((rdp.cmd0 >> 9) & 0x1F) + vtx_last;
FRDP ("uc5:vertex - addr: %08lx, first: %d, count: %d, matrix: %08lx\n", addr, first, n, cur_mtx);
int prj = cur_mtx;
int start = 0;
float x, y, z;
for (int i=first; i<first+n; i++)
{
start = (i-first) * 10;
VERTEX *v = &rdp.vtx[i];
x = (float)((short*)gfx.RDRAM)[(((addr+start) >> 1) + 0)^1];
y = (float)((short*)gfx.RDRAM)[(((addr+start) >> 1) + 1)^1];
z = (float)((short*)gfx.RDRAM)[(((addr+start) >> 1) + 2)^1];
v->x = x*rdp.dkrproj[prj][0][0] + y*rdp.dkrproj[prj][1][0] + z*rdp.dkrproj[prj][2][0] + rdp.dkrproj[prj][3][0];
v->y = x*rdp.dkrproj[prj][0][1] + y*rdp.dkrproj[prj][1][1] + z*rdp.dkrproj[prj][2][1] + rdp.dkrproj[prj][3][1];
v->z = x*rdp.dkrproj[prj][0][2] + y*rdp.dkrproj[prj][1][2] + z*rdp.dkrproj[prj][2][2] + rdp.dkrproj[prj][3][2];
v->w = x*rdp.dkrproj[prj][0][3] + y*rdp.dkrproj[prj][1][3] + z*rdp.dkrproj[prj][2][3] + rdp.dkrproj[prj][3][3];
if (billboarding)
{
v->x += rdp.vtx[0].x;
v->y += rdp.vtx[0].y;
v->z += rdp.vtx[0].z;
v->w += rdp.vtx[0].w;
}
if (fabs(v->w) < 0.001) v->w = 0.001f;
v->oow = 1.0f / v->w;
v->x_w = v->x * v->oow;
v->y_w = v->y * v->oow;
v->z_w = v->z * v->oow;
v->uv_calculated = 0xFFFFFFFF;
v->screen_translated = 0;
v->shade_mod = 0;
v->scr_off = 0;
if (v->x < -v->w) v->scr_off |= 1;
if (v->x > v->w) v->scr_off |= 2;
if (v->y < -v->w) v->scr_off |= 4;
if (v->y > v->w) v->scr_off |= 8;
if (v->w < 0.1f) v->scr_off |= 16;
if (fabs(v->z_w) > 1.0) v->scr_off |= 32;
v->r = ((wxUint8*)gfx.RDRAM)[(addr+start + 6)^3];
v->g = ((wxUint8*)gfx.RDRAM)[(addr+start + 7)^3];
v->b = ((wxUint8*)gfx.RDRAM)[(addr+start + 8)^3];
v->a = ((wxUint8*)gfx.RDRAM)[(addr+start + 9)^3];
CalculateFog (v);
#ifdef EXTREME_LOGGING
FRDP ("v%d - x: %f, y: %f, z: %f, w: %f, z_w: %f, r=%d, g=%d, b=%d, a=%d\n", i, v->x, v->y, v->z, v->w, v->z_w, v->r, v->g, v->b, v->a);
#endif
}
vtx_last += n;
}
static void uc5_tridma ()
{
vtx_last = 0; // we've drawn something, so the vertex index needs resetting
if (rdp.skip_drawing)
return;
// | cccc cccc 2222 0000 1111 1111 1111 0000 | cmd1 = address |
// c = tridma command
// 1 = method #1 of getting count
// 2 = method #2 of getting count
// 0 = unused
wxUint32 addr = segoffset(rdp.cmd1) & BMASK;
int num = (rdp.cmd0 & 0xFFF0) >> 4;
//int num = ((rdp.cmd0 & 0x00F00000) >> 20) + 1; // same thing!
FRDP("uc5:tridma #%d - addr: %08lx, count: %d\n", rdp.tri_n, addr, num);
int start, v0, v1, v2, flags;
for (int i=0; i<num; i++)
{
start = i << 4;
v0 = gfx.RDRAM[addr+start];
v1 = gfx.RDRAM[addr+start+1];
v2 = gfx.RDRAM[addr+start+2];
FRDP("tri #%d - %d, %d, %d\n", rdp.tri_n, v0, v1, v2);
VERTEX *v[3] = {
&rdp.vtx[v0],
&rdp.vtx[v1],
&rdp.vtx[v2]
};
flags = gfx.RDRAM[addr+start+3];
if (flags & 0x40) { // no cull
rdp.flags &= ~CULLMASK;
grCullMode (GR_CULL_DISABLE);
}
else { // front cull
rdp.flags &= ~CULLMASK;
if (rdp.view_scale[0] < 0) {
rdp.flags |= CULL_BACK; // agh, backwards culling
grCullMode (GR_CULL_POSITIVE);
}
else {
rdp.flags |= CULL_FRONT;
grCullMode (GR_CULL_NEGATIVE);
}
}
start += 4;
v[0]->ou = (float)((short*)gfx.RDRAM)[((addr+start) >> 1) + 5] / 32.0f;
v[0]->ov = (float)((short*)gfx.RDRAM)[((addr+start) >> 1) + 4] / 32.0f;
v[1]->ou = (float)((short*)gfx.RDRAM)[((addr+start) >> 1) + 3] / 32.0f;
v[1]->ov = (float)((short*)gfx.RDRAM)[((addr+start) >> 1) + 2] / 32.0f;
v[2]->ou = (float)((short*)gfx.RDRAM)[((addr+start) >> 1) + 1] / 32.0f;
v[2]->ov = (float)((short*)gfx.RDRAM)[((addr+start) >> 1) + 0] / 32.0f;
v[0]->uv_calculated = 0xFFFFFFFF;
v[1]->uv_calculated = 0xFFFFFFFF;
v[2]->uv_calculated = 0xFFFFFFFF;
if (cull_tri(v))
rdp.tri_n ++;
else
{
update ();
draw_tri (v);
rdp.tri_n ++;
}
}
}
static void uc5_dl_in_mem ()
{
wxUint32 addr = segoffset(rdp.cmd1) & BMASK;
int count = (rdp.cmd0 & 0x00FF0000) >> 16;
FRDP ("uc5:dl_in_mem - addr: %08lx, count: %d\n", addr, count);
if (rdp.pc_i >= 9) {
RDP_E ("** DL stack overflow **\n");
LRDP("** DL stack overflow **\n");
return;
}
rdp.pc_i ++; // go to the next PC in the stack
rdp.pc[rdp.pc_i] = addr; // jump to the address
rdp.dl_count = count + 1;
}
static void uc5_moveword()
{
LRDP("uc5:moveword ");
// Find which command this is (lowest byte of cmd0)
switch (rdp.cmd0 & 0xFF)
{
case 0x02: // moveword matrix 2 billboard
billboarding = (rdp.cmd1 & 1);
FRDP ("matrix billboard - %s\n", str_offon[billboarding]);
break;
case 0x04: // clip (verified same)
if (((rdp.cmd0>>8)&0xFFFF) == 0x04)
{
rdp.clip_ratio = sqrt((float)rdp.cmd1);
rdp.update |= UPDATE_VIEWPORT;
}
FRDP ("clip %08lx, %08lx\n", rdp.cmd0, rdp.cmd1);
break;
case 0x06: // segment (verified same)
FRDP ("segment: %08lx -> seg%d\n", rdp.cmd1, (rdp.cmd0 >> 10) & 0x0F);
rdp.segment[(rdp.cmd0 >> 10) & 0x0F] = rdp.cmd1;
break;
case 0x08:
{
rdp.fog_multiplier = (short)(rdp.cmd1 >> 16);
rdp.fog_offset = (short)(rdp.cmd1 & 0x0000FFFF);
FRDP ("fog: multiplier: %f, offset: %f\n", rdp.fog_multiplier, rdp.fog_offset);
// rdp.update |= UPDATE_FOG_ENABLED;
}
break;
case 0x0a: // moveword matrix select
cur_mtx = (rdp.cmd1 >> 6) & 3;
FRDP ("matrix select - mtx: %d\n", cur_mtx);
break;
default:
FRDP ("(unknown) %02lx - IGNORED\n", rdp.cmd0&0xFF);
}
}
static void uc5_setgeometrymode()
{
FRDP("uc0:setgeometrymode %08lx\n", rdp.cmd1);
rdp.geom_mode |= rdp.cmd1;
if (rdp.cmd1 & 0x00000001) // Z-Buffer enable
{
if (!(rdp.flags & ZBUF_ENABLED))
{
rdp.flags |= ZBUF_ENABLED;
rdp.update |= UPDATE_ZBUF_ENABLED;
}
}
//Added by Gonetz
if (rdp.cmd1 & 0x00010000) // Fog enable
{
if (!(rdp.flags & FOG_ENABLED))
{
rdp.flags |= FOG_ENABLED;
rdp.update |= UPDATE_FOG_ENABLED;
}
}
}
static void uc5_cleargeometrymode()
{
FRDP("uc0:cleargeometrymode %08lx\n", rdp.cmd1);
rdp.geom_mode &= (~rdp.cmd1);
if (rdp.cmd1 & 0x00000001) // Z-Buffer enable
{
if (rdp.flags & ZBUF_ENABLED)
{
rdp.flags ^= ZBUF_ENABLED;
rdp.update |= UPDATE_ZBUF_ENABLED;
}
}
//Added by Gonetz
if (rdp.cmd1 & 0x00010000) // Fog enable
{
if (rdp.flags & FOG_ENABLED)
{
rdp.flags ^= FOG_ENABLED;
rdp.update |= UPDATE_FOG_ENABLED;
}
}
}
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