mirror of
https://github.com/ZDoom/gzdoom.git
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7e4504f9d6
for true color. Instead of using a clipping rectangle on the destination it tried to alter the source offsets which produced incorrect results for mirrored or rotated patches. SVN r1889 (trunk)
249 lines
6.1 KiB
C++
249 lines
6.1 KiB
C++
/*
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** warptexture.cpp
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** Texture class for warped textures
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**
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**---------------------------------------------------------------------------
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** Copyright 2004-2006 Randy Heit
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** All rights reserved.
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**
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** Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions
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** are met:
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**
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** 1. Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** 2. Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in the
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** documentation and/or other materials provided with the distribution.
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** 3. The name of the author may not be used to endorse or promote products
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** derived from this software without specific prior written permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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**---------------------------------------------------------------------------
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**
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**
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*/
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#include "doomtype.h"
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#include "files.h"
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#include "r_data.h"
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#include "r_main.h"
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#include "templates.h"
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FWarpTexture::FWarpTexture (FTexture *source)
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: GenTime (0), SourcePic (source), Pixels (0), Spans (0), Speed (1.f)
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{
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CopyInfo(source);
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bWarped = 1;
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}
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FWarpTexture::~FWarpTexture ()
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{
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Unload ();
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if (Spans != NULL)
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{
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FreeSpans (Spans);
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Spans = NULL;
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}
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delete SourcePic;
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}
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void FWarpTexture::Unload ()
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{
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if (Pixels != NULL)
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{
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delete[] Pixels;
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Pixels = NULL;
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}
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if (Spans != NULL)
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{
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FreeSpans (Spans);
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Spans = NULL;
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}
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SourcePic->Unload ();
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}
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bool FWarpTexture::CheckModified ()
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{
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return r_FrameTime != GenTime;
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}
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const BYTE *FWarpTexture::GetPixels ()
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{
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DWORD time = r_FrameTime;
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if (Pixels == NULL || time != GenTime)
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{
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MakeTexture (time);
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}
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return Pixels;
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}
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const BYTE *FWarpTexture::GetColumn (unsigned int column, const Span **spans_out)
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{
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DWORD time = r_FrameTime;
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if (Pixels == NULL || time != GenTime)
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{
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MakeTexture (time);
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}
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if ((unsigned)column >= (unsigned)Width)
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{
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if (WidthMask + 1 == Width)
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{
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column &= WidthMask;
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}
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else
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{
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column %= Width;
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}
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}
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if (spans_out != NULL)
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{
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if (Spans == NULL)
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{
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Spans = CreateSpans (Pixels);
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}
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*spans_out = Spans[column];
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}
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return Pixels + column*Height;
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}
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void FWarpTexture::MakeTexture (DWORD time)
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{
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const BYTE *otherpix = SourcePic->GetPixels ();
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if (Pixels == NULL)
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{
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Pixels = new BYTE[Width * Height];
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}
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if (Spans != NULL)
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{
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FreeSpans (Spans);
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Spans = NULL;
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}
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GenTime = time;
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BYTE *buffer = (BYTE *)alloca (MAX (Width, Height));
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int xsize = Width;
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int ysize = Height;
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int xmask = WidthMask;
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int ymask = Height - 1;
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int ybits = HeightBits;
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int x, y;
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if ((1 << ybits) > Height)
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{
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ybits--;
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}
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DWORD timebase = DWORD(time * Speed * 32 / 28);
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for (y = ysize-1; y >= 0; y--)
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{
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int xt, xf = (finesine[(timebase+y*128)&FINEMASK]>>13) & xmask;
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const BYTE *source = otherpix + y;
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BYTE *dest = Pixels + y;
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for (xt = xsize; xt; xt--, xf = (xf+1)&xmask, dest += ysize)
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*dest = source[xf << ybits];
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}
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timebase = DWORD(time * Speed * 23 / 28);
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for (x = xsize-1; x >= 0; x--)
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{
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int yt, yf = (finesine[(time+(x+17)*128)&FINEMASK]>>13) & ymask;
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const BYTE *source = Pixels + (x << ybits);
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BYTE *dest = buffer;
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for (yt = ysize; yt; yt--, yf = (yf+1)&ymask)
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*dest++ = source[yf];
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memcpy (Pixels+(x<<ybits), buffer, ysize);
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}
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}
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// [GRB] Eternity-like warping
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FWarp2Texture::FWarp2Texture (FTexture *source)
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: FWarpTexture (source)
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{
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bWarped = 2;
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}
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void FWarp2Texture::MakeTexture (DWORD time)
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{
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const BYTE *otherpix = SourcePic->GetPixels ();
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if (Pixels == NULL)
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{
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Pixels = new BYTE[Width * Height];
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}
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if (Spans != NULL)
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{
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FreeSpans (Spans);
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Spans = NULL;
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}
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GenTime = time;
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int xsize = Width;
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int ysize = Height;
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int xmask = WidthMask;
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int ymask = Height - 1;
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int ybits = HeightBits;
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int x, y;
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if ((1 << ybits) > Height)
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{
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ybits--;
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}
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DWORD timebase = DWORD(time * Speed * 40 / 28);
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for (x = 0; x < xsize; ++x)
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{
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BYTE *dest = Pixels + (x << ybits);
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for (y = 0; y < ysize; ++y)
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{
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int xt = (x + 128
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+ ((finesine[(y*128 + timebase*5 + 900) & FINEMASK]*2)>>FRACBITS)
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+ ((finesine[(x*256 + timebase*4 + 300) & FINEMASK]*2)>>FRACBITS)) & xmask;
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int yt = (y + 128
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+ ((finesine[(y*128 + timebase*3 + 700) & FINEMASK]*2)>>FRACBITS)
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+ ((finesine[(x*256 + timebase*4 + 1200) & FINEMASK]*2)>>FRACBITS)) & ymask;
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*dest++ = otherpix[(xt << ybits) + yt];
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}
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}
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}
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//==========================================================================
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//
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// FMultiPatchTexture :: TexPart :: TexPart
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//
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//==========================================================================
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FTexture *FWarpTexture::GetRedirect(bool wantwarped)
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{
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if (!wantwarped) return SourcePic;
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else return this;
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}
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//==========================================================================
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//
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// FMultiPatchTexture :: CopyTrueColorPixels
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//
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// This doesn't warp. It's just here in case someone tries to use a warp
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// texture for compositing a multipatch texture
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//
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//==========================================================================
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int FWarpTexture::CopyTrueColorPixels(FBitmap *bmp, int x, int y, int rotate, FCopyInfo *inf)
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{
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return SourcePic->CopyTrueColorPixels(bmp, x, y, rotate, inf);
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}
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