OrdinaryMagician/vkdoom_m
OrdinaryMagician/vkdoom_m
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- replaced finesine for texture warping with a smaller custom table, based on the old 2005 FP code, but fixes the generation of the sine table.

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- removed all remnants of finesine and deleted tables.c and tables.h.
This commit is contained in:
Christoph Oelckers 2016-04-28 15:59:37 +02:00
commit ef98757c7c
21 changed files with 47 additions and 158 deletions
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6
src/r_main.cpp
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@ -175,7 +175,7 @@ static int lastcenteryfrac;
static inline int viewangletox(int i)
{
const double pimul = M_PI * 2 / FINEANGLES;
const double pimul = M_PI / 4096;
// Don't waste time calculating the tangent of values outside the valid range.
// Checking the index where tan(i) becomes too large is a lot faster
@ -188,7 +188,7 @@ static inline int viewangletox(int i)
return -1;
}
double t = tan((i - FINEANGLES / 4)*pimul) * FocalLengthX;
double t = tan((i - 2048)*pimul) * FocalLengthX;
return clamp(xs_CeilToInt(CenterX - t), -1, viewwidth+1);
}
@ -230,7 +230,7 @@ void R_InitTextureMapping ()
{
++i;
}
xtoviewangle[x] = (i << ANGLETOFINESHIFT) - ANGLE_90;
xtoviewangle[x] = (i << 19) - ANGLE_90;
}
for (x = t2 + 1; x <= viewwidth; ++x)
{