135 lines
4.0 KiB
C++
135 lines
4.0 KiB
C++
// Project64 - A Nintendo 64 emulator
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// http://www.pj64-emu.com/
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// Copyright(C) 2001-2021 Project64
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// Copyright(C) 2003-2009 Sergey 'Gonetz' Lipski
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// Copyright(C) 2002 Dave2001
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// GNU/GPLv2 licensed: https://gnu.org/licenses/gpl-2.0.html
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#include <Project64-video/rdp.h>
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#include <Project64-video/Gfx_1.3.h>
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#include <Project64-video/trace.h>
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#include <Project64-video/ucode.h>
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#include <math.h>
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#include "3dmath.h"
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uint32_t pd_col_addr = 0;
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void uc7_colorbase()
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{
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WriteTrace(TraceRDP, TraceDebug, "uc7_colorbase");
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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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uint16_t 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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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 (uint32_t 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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uint32_t addr = segoffset(rdp.cmd1);
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uint32_t 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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WriteTrace(TraceRDP, TraceDebug, "uc7:vertex n: %d, v0: %d, from: %08lx", 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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gfxVERTEX &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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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);
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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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uint8_t *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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WriteTrace(TraceRDP, TraceVerbose, "calc linear: v%d - u: %f, v: %f", i >> 4, v.ou, v.ov);
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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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WriteTrace(TraceRDP, TraceVerbose, "calc sphere: v%d - u: %f, v: %f", i >> 4, v.ou, v.ov);
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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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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);
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vertex++;
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}
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} |