178 lines
6.3 KiB
C
178 lines
6.3 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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// Size: 2, Format: 0
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//
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// Load 32bit RGBA texture
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// Based on sources of angrylion's software plugin.
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//
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uint32_t Load32bRGBA(uintptr_t dst, uintptr_t src, int wid_64, int height, int line, int real_width, int tile)
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{
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if (height < 1) height = 1;
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const uint16_t *tmem16 = (uint16_t*)rdp.tmem;
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const uint32_t tbase = (src - (uintptr_t)rdp.tmem) >> 1;
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const uint32_t width = maxval(1, wid_64 << 1);
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const int ext = real_width - width;
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line = width + (line >> 2);
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uint32_t s, t, c;
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uint32_t * tex = (uint32_t*)dst;
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uint16_t rg, ba;
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for (t = 0; t < (uint32_t)height; t++)
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{
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uint32_t tline = tbase + line * t;
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uint32_t xorval = (t & 1) ? 3 : 1;
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for (s = 0; s < width; s++)
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{
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uint32_t taddr = ((tline + s) ^ xorval) & 0x3ff;
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rg = tmem16[taddr];
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ba = tmem16[taddr | 0x400];
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c = ((ba & 0xFF) << 24) | (rg << 8) | (ba >> 8);
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*tex++ = c;
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}
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tex += ext;
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}
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int id = tile - rdp.cur_tile;
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uint32_t mod = (id == 0) ? cmb.mod_0 : cmb.mod_1;
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if (mod || !voodoo.sup_32bit_tex)
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{
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//convert to ARGB_4444
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const uint32_t tex_size = real_width * height;
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tex = (uint32_t *)dst;
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uint16_t *tex16 = (uint16_t*)dst;
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uint16_t a, r, g, b;
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for (uint32_t i = 0; i < tex_size; i++) {
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c = tex[i];
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a = (c >> 28) & 0xF;
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r = (c >> 20) & 0xF;
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g = (c >> 12) & 0xF;
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b = (c >> 4) & 0xF;
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tex16[i] = (a << 12) | (r << 8) | (g << 4) | b;
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}
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return (1 << 16) | GR_TEXFMT_ARGB_4444;
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}
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return (2 << 16) | GR_TEXFMT_ARGB_8888;
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}
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//****************************************************************
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// LoadTile for 32bit RGBA texture
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// Based on sources of angrylion's software plugin.
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//
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void LoadTile32b(uint32_t tile, uint32_t ul_s, uint32_t ul_t, uint32_t width, uint32_t height)
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{
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const uint32_t line = rdp.tiles[tile].line << 2;
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const uint32_t tbase = rdp.tiles[tile].t_mem << 2;
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const uint32_t addr = rdp.timg.addr >> 2;
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const uint32_t* src = (const uint32_t*)gfx.RDRAM;
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uint16_t *tmem16 = (uint16_t*)rdp.tmem;
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uint32_t c, ptr, tline, s, xorval;
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for (uint32_t j = 0; j < height; j++)
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{
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tline = tbase + line * j;
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s = ((j + ul_t) * rdp.timg.width) + ul_s;
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xorval = (j & 1) ? 3 : 1;
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for (uint32_t i = 0; i < width; i++)
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{
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c = src[addr + s + i];
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ptr = ((tline + i) ^ xorval) & 0x3ff;
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tmem16[ptr] = c >> 16;
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tmem16[ptr | 0x400] = c & 0xffff;
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}
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}
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}
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//****************************************************************
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// LoadBlock for 32bit RGBA texture
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// Based on sources of angrylion's software plugin.
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//
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void LoadBlock32b(uint32_t tile, uint32_t ul_s, uint32_t ul_t, uint32_t lr_s, uint32_t dxt)
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{
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const uint32_t * src = (const uint32_t*)gfx.RDRAM;
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const uint32_t tb = rdp.tiles[tile].t_mem << 2;
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const uint32_t tiwindwords = rdp.timg.width;
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const uint32_t slindwords = ul_s;
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const uint32_t line = rdp.tiles[tile].line << 2;
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uint16_t *tmem16 = (uint16_t*)rdp.tmem;
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uint32_t addr = rdp.timg.addr >> 2;
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uint32_t width = (lr_s - ul_s + 1) << 2;
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if (width & 7)
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width = (width & (~7)) + 8;
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if (dxt != 0)
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{
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uint32_t j = 0;
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uint32_t t = 0;
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uint32_t oldt = 0;
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uint32_t ptr;
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addr += (ul_t * tiwindwords) + slindwords;
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uint32_t c = 0;
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for (uint32_t i = 0; i < width; i += 2)
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{
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oldt = t;
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t = ((j >> 11) & 1) ? 3 : 1;
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if (t != oldt)
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i += line;
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ptr = ((tb + i) ^ t) & 0x3ff;
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c = src[addr + i];
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tmem16[ptr] = c >> 16;
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tmem16[ptr | 0x400] = c & 0xffff;
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ptr = ((tb + i + 1) ^ t) & 0x3ff;
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c = src[addr + i + 1];
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tmem16[ptr] = c >> 16;
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tmem16[ptr | 0x400] = c & 0xffff;
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j += dxt;
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}
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}
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else
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{
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addr += (ul_t * tiwindwords) + slindwords;
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uint32_t c, ptr;
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for (uint32_t i = 0; i < width; i++)
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{
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ptr = ((tb + i) ^ 1) & 0x3ff;
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c = src[addr + i];
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tmem16[ptr] = c >> 16;
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tmem16[ptr | 0x400] = c & 0xffff;
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}
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}
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}
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