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https://github.com/ZDoom/qzdoom.git
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c3759646e7
Ideally the warping shouldn't be a property of the texture class itself but an effect processor that can get added to a texture. Unfortunately the current setup will not allow this, requiring some significant refactoring of texture access first.
63 lines
2 KiB
C++
63 lines
2 KiB
C++
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template<class TYPE>
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void WarpBuffer(TYPE *Pixels, const TYPE *source, int width, int height, int xmul, int ymul, unsigned time, float Speed, int warptype)
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{
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int ymask = height - 1;
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int x, y;
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if (warptype == 1)
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{
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TYPE *buffer = (TYPE *)alloca(sizeof(TYPE) * MAX(width, height));
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// [mxd] Rewrote to fix animation for NPo2 textures
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unsigned timebase = unsigned(time * Speed * 32 / 28);
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for (y = height - 1; y >= 0; y--)
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{
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int xf = (TexMan.sintable[((timebase + y*ymul) >> 2)&TexMan.SINMASK] >> 11) % width;
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if (xf < 0) xf += width;
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int xt = xf;
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const TYPE *sourcep = source + y;
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TYPE *dest = Pixels + y;
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for (xt = width; xt; xt--, xf = (xf + 1) % width, dest += height)
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*dest = sourcep[xf + ymask * xf];
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}
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timebase = unsigned(time * Speed * 23 / 28);
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for (x = width - 1; x >= 0; x--)
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{
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int yf = (TexMan.sintable[((time + (x + 17)*xmul) >> 2)&TexMan.SINMASK] >> 11) % height;
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if (yf < 0) yf += height;
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int yt = yf;
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const TYPE *sourcep = Pixels + (x + ymask * x);
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TYPE *dest = buffer;
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for (yt = height; yt; yt--, yf = (yf + 1) % height)
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*dest++ = sourcep[yf];
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memcpy(Pixels + (x + ymask*x), buffer, height * sizeof(TYPE));
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}
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}
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else if (warptype == 2)
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{
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unsigned timebase = unsigned(time * Speed * 40 / 28);
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// [mxd] Rewrote to fix animation for NPo2 textures
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for (x = 0; x < width; x++)
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{
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TYPE *dest = Pixels + (x + ymask * x);
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for (y = 0; y < height; y++)
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{
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int xt = (x + 128
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+ ((TexMan.sintable[((y*ymul + timebase * 5 + 900) >> 2) & TexMan.SINMASK]) >> 13)
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+ ((TexMan.sintable[((x*xmul + timebase * 4 + 300) >> 2) & TexMan.SINMASK]) >> 13)) % width;
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int yt = (y + 128
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+ ((TexMan.sintable[((y*ymul + timebase * 3 + 700) >> 2) & TexMan.SINMASK]) >> 13)
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+ ((TexMan.sintable[((x*xmul + timebase * 4 + 1200) >> 2) & TexMan.SINMASK]) >> 13)) % height;
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*dest++ = source[(xt + ymask * xt) + yt];
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}
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}
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}
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else
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{
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// should never happen, just in case...
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memcpy(Pixels, source, width*height * sizeof(TYPE));
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}
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}
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