137 lines
4.7 KiB
C
137 lines
4.7 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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extern "C" void asmLoad16bRGBA (wxUIntPtr src, wxUIntPtr dst, int wid_64, int height, int line, int ext);
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extern "C" void asmLoad16bIA (wxUIntPtr src, wxUIntPtr dst, int wid_64, int height, int line, int ext);
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//****************************************************************
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// Size: 2, Format: 0
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//
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wxUint32 Load16bRGBA (wxUIntPtr dst, wxUIntPtr src, int wid_64, int height, int line, int real_width, int /*tile*/)
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{
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if (wid_64 < 1) wid_64 = 1;
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if (height < 1) height = 1;
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int ext = (real_width - (wid_64 << 2)) << 1;
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asmLoad16bRGBA(src, dst, wid_64, height, line, ext);
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return (1 << 16) | GR_TEXFMT_ARGB_1555;
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}
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//****************************************************************
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// Size: 2, Format: 3
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//
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wxUint32 Load16bIA (wxUIntPtr dst, wxUIntPtr src, int wid_64, int height, int line, int real_width, int /*tile*/)
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{
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if (wid_64 < 1) wid_64 = 1;
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if (height < 1) height = 1;
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int ext = (real_width - (wid_64 << 2)) << 1;
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asmLoad16bIA(src, dst, wid_64, height, line, ext);
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return (1 << 16) | GR_TEXFMT_ALPHA_INTENSITY_88;
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}
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//****************************************************************
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// Size: 2, Format: 1
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//
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wxUint16 yuv_to_rgb565(wxUint8 y, wxUint8 u, wxUint8 v)
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{
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//*
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float r = y + (1.370705f * (v-128));
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float g = y - (0.698001f * (v-128)) - (0.337633f * (u-128));
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float b = y + (1.732446f * (u-128));
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r *= 0.125f;
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g *= 0.25f;
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b *= 0.125f;
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//clipping the result
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if (r > 31) r = 31;
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if (g > 63) g = 63;
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if (b > 31) b = 31;
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if (r < 0) r = 0;
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if (g < 0) g = 0;
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if (b < 0) b = 0;
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wxUint16 c = (wxUint16)(((wxUint16)(r) << 11) |
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((wxUint16)(g) << 5) |
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(wxUint16)(b) );
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return c;
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//*/
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/*
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const wxUint32 c = y - 16;
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const wxUint32 d = u - 128;
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const wxUint32 e = v - 128;
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wxUint32 r = (298 * c + 409 * e + 128) & 0xf800;
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wxUint32 g = ((298 * c - 100 * d - 208 * e + 128) >> 5) & 0x7e0;
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wxUint32 b = ((298 * c + 516 * d + 128) >> 11) & 0x1f;
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WORD texel = (WORD)(r | g | b);
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return texel;
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*/
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}
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//****************************************************************
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// Size: 2, Format: 1
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//
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wxUint32 Load16bYUV (wxUIntPtr dst, wxUIntPtr /*src*/, int /*wid_64*/, int /*height*/, int /*line*/, int /*real_width*/, int tile)
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{
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wxUint32 * mb = (wxUint32*)(gfx.RDRAM+rdp.addr[rdp.tiles[tile].t_mem]); //pointer to the macro block
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wxUint16 * tex = (wxUint16*)dst;
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wxUint16 i;
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for (i = 0; i < 128; i++)
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{
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wxUint32 t = mb[i]; //each wxUint32 contains 2 pixels
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wxUint8 y1 = (wxUint8)t&0xFF;
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wxUint8 v = (wxUint8)(t>>8)&0xFF;
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wxUint8 y0 = (wxUint8)(t>>16)&0xFF;
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wxUint8 u = (wxUint8)(t>>24)&0xFF;
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wxUint16 c = yuv_to_rgb565(y0, u, v);
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*(tex++) = c;
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c = yuv_to_rgb565(y1, u, v);
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*(tex++) = c;
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}
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return (1 << 16) | GR_TEXFMT_RGB_565;
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}
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