406 lines
13 KiB
C
406 lines
13 KiB
C
// Emacs style mode select -*- C++ -*-
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//-----------------------------------------------------------------------------
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//
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// $Id:$
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//
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// Copyright (C) 1993-1996 by id Software, Inc.
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//
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// This source is available for distribution and/or modification
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// only under the terms of the DOOM Source Code License as
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// published by id Software. All rights reserved.
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//
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// The source 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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// FITNESS FOR A PARTICULAR PURPOSE. See the DOOM Source Code License
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// for more details.
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//
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// $Log:$
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//
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// DESCRIPTION:
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// Gamma correction LUT stuff.
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// Functions to draw patches (by post) directly to screen.
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// Functions to blit a block to the screen.
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//
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//-----------------------------------------------------------------------------
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//static const char
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#include "cgdoom.h"
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#include "cgdoom-frag.h"
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#include "i_system.h"
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#include "r_local.h"
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#include "doomdef.h"
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#include "doomdata.h"
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#include "m_bbox.h"
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#include "m_swap.h"
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#include "v_video.h"
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#include "z_zone.h"
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#include "w_wad.h"
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// Each screen is [SCREENWIDTH*SCREENHEIGHT];
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byte* screens[SCREEN_COUNT];
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int dirtybox[4];
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// Now where did these came from?
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const byte gammatable[5][256] =
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{
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{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,
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17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,
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33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,
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49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,
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65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,
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81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,
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97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,
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113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,
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128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,
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144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,
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160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,
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176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,
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192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,
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208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,
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224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,
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240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255},
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{2,4,5,7,8,10,11,12,14,15,16,18,19,20,21,23,24,25,26,27,29,30,31,
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32,33,34,36,37,38,39,40,41,42,44,45,46,47,48,49,50,51,52,54,55,
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56,57,58,59,60,61,62,63,64,65,66,67,69,70,71,72,73,74,75,76,77,
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78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,
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99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,
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115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,129,
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130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,
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146,147,148,148,149,150,151,152,153,154,155,156,157,158,159,160,
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161,162,163,163,164,165,166,167,168,169,170,171,172,173,174,175,
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175,176,177,178,179,180,181,182,183,184,185,186,186,187,188,189,
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190,191,192,193,194,195,196,196,197,198,199,200,201,202,203,204,
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205,205,206,207,208,209,210,211,212,213,214,214,215,216,217,218,
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219,220,221,222,222,223,224,225,226,227,228,229,230,230,231,232,
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233,234,235,236,237,237,238,239,240,241,242,243,244,245,245,246,
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247,248,249,250,251,252,252,253,254,255},
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{4,7,9,11,13,15,17,19,21,22,24,26,27,29,30,32,33,35,36,38,39,40,42,
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43,45,46,47,48,50,51,52,54,55,56,57,59,60,61,62,63,65,66,67,68,69,
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70,72,73,74,75,76,77,78,79,80,82,83,84,85,86,87,88,89,90,91,92,93,
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94,95,96,97,98,100,101,102,103,104,105,106,107,108,109,110,111,112,
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113,114,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,
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129,130,131,132,133,133,134,135,136,137,138,139,140,141,142,143,144,
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144,145,146,147,148,149,150,151,152,153,153,154,155,156,157,158,159,
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160,160,161,162,163,164,165,166,166,167,168,169,170,171,172,172,173,
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174,175,176,177,178,178,179,180,181,182,183,183,184,185,186,187,188,
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188,189,190,191,192,193,193,194,195,196,197,197,198,199,200,201,201,
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202,203,204,205,206,206,207,208,209,210,210,211,212,213,213,214,215,
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216,217,217,218,219,220,221,221,222,223,224,224,225,226,227,228,228,
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229,230,231,231,232,233,234,235,235,236,237,238,238,239,240,241,241,
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242,243,244,244,245,246,247,247,248,249,250,251,251,252,253,254,254,
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255},
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{8,12,16,19,22,24,27,29,31,34,36,38,40,41,43,45,47,49,50,52,53,55,
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57,58,60,61,63,64,65,67,68,70,71,72,74,75,76,77,79,80,81,82,84,85,
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86,87,88,90,91,92,93,94,95,96,98,99,100,101,102,103,104,105,106,107,
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108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,
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125,126,127,128,129,130,131,132,133,134,135,135,136,137,138,139,140,
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141,142,143,143,144,145,146,147,148,149,150,150,151,152,153,154,155,
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155,156,157,158,159,160,160,161,162,163,164,165,165,166,167,168,169,
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169,170,171,172,173,173,174,175,176,176,177,178,179,180,180,181,182,
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183,183,184,185,186,186,187,188,189,189,190,191,192,192,193,194,195,
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195,196,197,197,198,199,200,200,201,202,202,203,204,205,205,206,207,
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207,208,209,210,210,211,212,212,213,214,214,215,216,216,217,218,219,
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219,220,221,221,222,223,223,224,225,225,226,227,227,228,229,229,230,
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231,231,232,233,233,234,235,235,236,237,237,238,238,239,240,240,241,
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242,242,243,244,244,245,246,246,247,247,248,249,249,250,251,251,252,
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253,253,254,254,255},
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{16,23,28,32,36,39,42,45,48,50,53,55,57,60,62,64,66,68,69,71,73,75,76,
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78,80,81,83,84,86,87,89,90,92,93,94,96,97,98,100,101,102,103,105,106,
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107,108,109,110,112,113,114,115,116,117,118,119,120,121,122,123,124,
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125,126,128,128,129,130,131,132,133,134,135,136,137,138,139,140,141,
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142,143,143,144,145,146,147,148,149,150,150,151,152,153,154,155,155,
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156,157,158,159,159,160,161,162,163,163,164,165,166,166,167,168,169,
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169,170,171,172,172,173,174,175,175,176,177,177,178,179,180,180,181,
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182,182,183,184,184,185,186,187,187,188,189,189,190,191,191,192,193,
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193,194,195,195,196,196,197,198,198,199,200,200,201,202,202,203,203,
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204,205,205,206,207,207,208,208,209,210,210,211,211,212,213,213,214,
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214,215,216,216,217,217,218,219,219,220,220,221,221,222,223,223,224,
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224,225,225,226,227,227,228,228,229,229,230,230,231,232,232,233,233,
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234,234,235,235,236,236,237,237,238,239,239,240,240,241,241,242,242,
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243,243,244,244,245,245,246,246,247,247,248,248,249,249,250,250,251,
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251,252,252,253,254,254,255,255}
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};
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int usegamma;
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//
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// V_MarkRect
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//
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void V_MarkRect( int x,int y,int width,int height )
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{
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M_AddToBox (dirtybox, x, y);
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M_AddToBox (dirtybox, x+width-1, y+height-1);
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}
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//
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// V_CopyRect
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//
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void V_CopyRect(int srcx,int srcy,int srcscrn,int width,int height,int destx,int desty,int destscrn )
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{
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byte* src;
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byte* dest;
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#ifdef RANGECHECK
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if (srcx<0 ||srcx+width >SCREENWIDTH || srcy<0 || srcy+height>SCREENHEIGHT ||destx<0||destx+width >SCREENWIDTH
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|| desty<0 || desty+height>SCREENHEIGHT || (unsigned)srcscrn>=SCREEN_COUNT || (unsigned)destscrn>=SCREEN_COUNT)
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{
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I_Error ("Bad V_CopyRect");
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}
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#endif
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V_MarkRect (destx, desty, width, height);
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ASSERT(SCREEN_COUNT > srcscrn);
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src = screens[srcscrn]+SCREENWIDTH*srcy+srcx;
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ASSERT(SCREEN_COUNT > destscrn);
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dest = screens[destscrn]+SCREENWIDTH*desty+destx;
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for ( ; height>0 ; height--)
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{
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memcpy (dest, src, width);
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src += SCREENWIDTH;
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dest += SCREENWIDTH;
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}
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}
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static void CopyColumn(byte *pTarget,const byte *pSource,int iLength)
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{
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while(iLength)
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{
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pTarget[0] = pSource[0];
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pSource++;
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pTarget += SCREENWIDTH;
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iLength--;
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}
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}
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//
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// V_DrawPatch
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// Masks a column based masked pic to the screen.
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//
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void V_DrawPatch(int x,int y,int scrn,const patch_t* patch)
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{
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int col;
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//const column_t* column;
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byte* desttop;
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int w = SHORT(patch->width);
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int h = SHORT(patch->height);
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if(w == 0)
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{
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return; //CGD: hack for some broken wad files
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}
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y -= SHORT(patch->topoffset);
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x -= SHORT(patch->leftoffset);
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#ifdef RANGECHECK
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if (x<0 ||x+w >SCREENWIDTH || y<0 || y+h>SCREENHEIGHT)
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{
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printf("Patch at %d,%d exceeds LFB\n", x,y );
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// No I_Error abort - what is up with TNT.WAD?
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printf("V_DrawPatch: bad patch (ignored)\n");
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return;
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}
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#endif
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if (!scrn)
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V_MarkRect (x, y, w, h);
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col = 0;
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ASSERT(SCREEN_COUNT > scrn);
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desttop = screens[scrn]+y*SCREENWIDTH+x;
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for ( ; col<w ; x++, col++, desttop++)
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{
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const byte * pData = ((const byte *)patch + INTFromBytes((const byte*)&(patch->columnofsLE[col])));
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// step through the posts in a column
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while (pData[0] != 0xff )
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{
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const byte * pSource = pData+3;
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byte* dest = desttop + ((int)pData[0])*SCREENWIDTH;
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int count = pData[1];
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pData += count + 4 ;
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CopyColumn(dest,pSource,count);
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}
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}
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}
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//
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// V_DrawFullscreenPatchFragmented
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// Draws a full-screen opaque patch without loading it to RAM, even if it's
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// fragmented. This function is useful in avoiding loading ~66 kB as a single
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// lump when full-screen images are used, which occasionally fails due to
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// fragmentation.
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//
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void V_DrawFullscreenPatchFragmented(int scrn, const char *lumpname)
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{
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CGDoom_Frag patch;
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if (CGD_Frag_Map(lumpname, &patch)) {
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V_DrawPatch(0, 0, scrn, W_CacheLumpNamePatch(lumpname, PU_CACHE));
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return;
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}
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byte *dest = screens[scrn];
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short w = CGD_Frag_i16LE(&patch, offsetof(patch_t, widthLE));
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short h = CGD_Frag_i16LE(&patch, offsetof(patch_t, heightLE));
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if (!scrn)
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V_MarkRect (0, 0, SCREENWIDTH, SCREENHEIGHT);
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for (int x = 0; x < w; x++) {
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int offset = CGD_Frag_i32LE(&patch, offsetof(patch_t, columnofsLE) + 4*x);
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int h0 = CGD_Frag_u8(&patch, offset+1);
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for (int y = 0; y < h; y++) {
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dest[SCREENWIDTH * y + x] = CGD_Frag_u8(&patch, offset + y+3+3*(y>=h0));
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}
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}
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}
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//
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// V_DrawPatchFlipped
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// Masks a column based masked pic to the screen.
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// Flips horizontally, e.g. to mirror face.
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//
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void V_DrawPatchFlipped(int x,int y,int scrn,const patch_t* patch)
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{
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int col;
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//const column_t* column;
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byte* desttop;
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int w = SHORT(patch->width);
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int h = SHORT(patch->height);
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y -= SHORT(patch->topoffset);
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x -= SHORT(patch->leftoffset);
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#ifdef RANGECHECK
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if (x<0 ||x+w >SCREENWIDTH || y<0 || y+h>SCREENHEIGHT)
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{
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printf("Patch at %d,%d exceeds LFB\n", x,y );
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// No I_Error abort - what is up with TNT.WAD?
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printf("V_DrawPatch: bad patch (ignored)\n");
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return;
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}
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#endif
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if (!scrn)
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V_MarkRect (x, y, w, h);
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col = 0;
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ASSERT(SCREEN_COUNT > scrn);
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desttop = screens[scrn]+y*SCREENWIDTH+x;
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w--;
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for ( ; col<=w ; x++, col++, desttop++)
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{
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const byte * pData = ((const byte *)patch + INTFromBytes((const byte*)&(patch->columnofsLE[w-col])));
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// step through the posts in a column
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while (pData[0] != 0xff )
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{
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const byte * pSource = pData+3;
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byte* dest = desttop + ((int)pData[0])*SCREENWIDTH;
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int count = pData[1];
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pData += count + 4 ;
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CopyColumn(dest,pSource,count);
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}
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}
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}
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//
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// V_DrawBlock
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// Draw a linear block of pixels into the view buffer.
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//
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void V_DrawBlock ( int x, int y, int scrn, int width, int height, const byte* src )
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{
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byte* dest;
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#ifdef RANGECHECK
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if (x<0 ||x+width >SCREENWIDTH || y<0 || y+height>SCREENHEIGHT || (unsigned)scrn>=SCREEN_COUNT )
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{
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I_Error ("Bad V_DrawBlock");
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}
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#endif
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V_MarkRect (x, y, width, height);
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ASSERT(SCREEN_COUNT > scrn);
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dest = screens[scrn] + y*SCREENWIDTH+x;
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while (height--)
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{
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memcpy (dest, src, width);
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src += width;
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dest += SCREENWIDTH;
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}
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}
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//
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// V_GetBlock
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// Gets a linear block of pixels from the view buffer.
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//
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void V_GetBlock( int x, int y, int scrn, int width, int height, byte* dest )
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{
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byte* src;
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#ifdef RANGECHECK
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if (x<0 ||x+width >SCREENWIDTH || y<0 || y+height>SCREENHEIGHT || (unsigned)scrn>=SCREEN_COUNT )
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{
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I_Error ("Bad V_DrawBlock");
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}
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#endif
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ASSERT(SCREEN_COUNT > scrn);
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src = screens[scrn] + y*SCREENWIDTH+x;
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while (height--)
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{
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memcpy (dest, src, width);
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src += SCREENWIDTH;
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dest += width;
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}
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}
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//
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// V_Init
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//
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void V_Init (void)
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{
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/* screens[0] is the main screen */
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screens[0] = I_ScreenBase(0);
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/* screens[1] is used for the level end sequence (intermission) */
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screens[1] = I_ScreenBase(1);
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/* screens[2] and screens[3] are used for wipe effects */
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screens[2] = I_ScreenBase(2);
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screens[3] = I_ScreenBase(3);
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/* screens[4] is used for the status bar (allocated by st_stuff.c) */
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screens[4] = NULL;
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}
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/* CGDoom-specific function to clear screen when changing window size */
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void V_Clear (void)
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{
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memset(screens[0], 0, 320*(200-32));
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}
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