project64/Source/Project64-video/ucode07.cpp

142 lines
4.7 KiB
C++

/***************************************************************************
* *
* 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. *
* *
****************************************************************************/
#include <Project64-video/rdp.h>
#include <Project64-video/Gfx_1.3.h>
#include <Project64-video/trace.h>
#include <Project64-video/ucode.h>
#include <math.h>
#include "3dmath.h"
uint32_t pd_col_addr = 0;
void uc7_colorbase()
{
WriteTrace(TraceRDP, TraceDebug, "uc7_colorbase");
pd_col_addr = segoffset(rdp.cmd1);
}
typedef struct
{
short y;
short x;
uint16_t idx;
short z;
short t;
short s;
} vtx_uc7;
void uc7_vertex()
{
if (rdp.update & UPDATE_MULT_MAT)
{
rdp.update ^= UPDATE_MULT_MAT;
MulMatrices(rdp.model, rdp.proj, rdp.combined);
}
// This is special, not handled in update()
if (rdp.update & UPDATE_LIGHTS)
{
rdp.update ^= UPDATE_LIGHTS;
// Calculate light vectors
for (uint32_t l = 0; l < rdp.num_lights; l++)
{
InverseTransformVector(&rdp.light[l].dir_x, rdp.light_vector[l], rdp.model);
NormalizeVector(rdp.light_vector[l]);
}
}
uint32_t addr = segoffset(rdp.cmd1);
uint32_t v0, i, n;
float x, y, z;
rdp.v0 = v0 = (rdp.cmd0 & 0x0F0000) >> 16;
rdp.vn = n = ((rdp.cmd0 & 0xF00000) >> 20) + 1;
WriteTrace(TraceRDP, TraceDebug, "uc7:vertex n: %d, v0: %d, from: %08lx", n, v0, addr);
vtx_uc7 *vertex = (vtx_uc7 *)&gfx.RDRAM[addr];
for (i = 0; i < n; i++)
{
VERTEX &v = rdp.vtx(v0 + i);
x = (float)vertex->x;
y = (float)vertex->y;
z = (float)vertex->z;
v.flags = 0;
v.ou = (float)vertex->s;
v.ov = (float)vertex->t;
v.uv_scaled = 0;
WriteTrace(TraceRDP, TraceVerbose, "before: v%d - x: %f, y: %f, z: %f, flags: %04lx, ou: %f, ov: %f", i >> 4, x, y, z, v.flags, v.ou, v.ov);
v.x = x*rdp.combined[0][0] + y*rdp.combined[1][0] + z*rdp.combined[2][0] + rdp.combined[3][0];
v.y = x*rdp.combined[0][1] + y*rdp.combined[1][1] + z*rdp.combined[2][1] + rdp.combined[3][1];
v.z = x*rdp.combined[0][2] + y*rdp.combined[1][2] + z*rdp.combined[2][2] + rdp.combined[3][2];
v.w = x*rdp.combined[0][3] + y*rdp.combined[1][3] + z*rdp.combined[2][3] + rdp.combined[3][3];
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.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;
uint8_t *color = &gfx.RDRAM[pd_col_addr + (vertex->idx & 0xff)];
v.a = color[0];
CalculateFog(v);
if (rdp.geom_mode & 0x00020000)
{
v.vec[0] = (char)color[3];
v.vec[1] = (char)color[2];
v.vec[2] = (char)color[1];
if (rdp.geom_mode & 0x80000)
{
calc_linear(v);
WriteTrace(TraceRDP, TraceVerbose, "calc linear: v%d - u: %f, v: %f", i >> 4, v.ou, v.ov);
}
else if (rdp.geom_mode & 0x40000)
{
calc_sphere(v);
WriteTrace(TraceRDP, TraceVerbose, "calc sphere: v%d - u: %f, v: %f", i >> 4, v.ou, v.ov);
}
NormalizeVector(v.vec);
calc_light(v);
}
else
{
v.r = color[3];
v.g = color[2];
v.b = color[1];
}
WriteTrace(TraceRDP, TraceVerbose, "v%d - x: %f, y: %f, z: %f, w: %f, u: %f, v: %f", i >> 4, v.x, v.y, v.z, v.w, v.ou, v.ov);
vertex++;
}
}