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Improve flat mipmap selection

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This commit is contained in:
Magnus Norddahl 2016-11-06 11:39:28 +01:00
commit 3a7532fd9b
4 changed files with 18 additions and 11 deletions
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10
src/r_plane.cpp
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@ -245,6 +245,16 @@ void R_MapPlane (int y, int x1)
ds_yfrac = 0;
}
if (r_swtruecolor)
{
double distance2 = planeheight * yslope[(y + 1 < viewheight) ? y + 1 : y - 1];
double xmagnitude = fabs(ystepscale * (distance2 - distance) * FocalLengthX);
double ymagnitude = fabs(xstepscale * (distance2 - distance) * FocalLengthX);
double magnitude = MAX(ymagnitude, xmagnitude);
double min_lod = -1000.0;
ds_lod = MAX(log2(magnitude) + r_lod_bias, min_lod);
}
if (plane_shade)
{
// Determine lighting based on the span's distance from the viewer.