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Fix T46984: Image mapping bug 

The issue was caused by wrong scaling applied on top of the image sampling.

It seems there's no reason to apply alpha clipping when using EWA filtering,
this filtering currently works in the way that it apples all needed clipping
and scaling to a clipped kernel already.
This commit is contained in:
Sergey Sharybin 2016-01-05 22:41:41 +05:00
parent 5d564da3b6
commit 8c8215fb77
Notes: blender-bot 2023-02-14 08:21:53 +01:00 
Referenced by issue #46984, image mapping bug
1 changed files with 6 additions and 2 deletions
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8
source/blender/render/intern/source/imagetexture.c
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@ -1248,7 +1248,9 @@ static int imagewraposa_aniso(Tex *tex, Image *ima, ImBuf *ibuf, const float tex
texres->ta += levf*(texr.ta - texres->ta);
}
alpha_clip_aniso(ibuf, fx-minx, fy-miny, fx+minx, fy+miny, extflag, texres);
if (tex->texfilter != TXF_EWA) {
alpha_clip_aniso(ibuf, fx-minx, fy-miny, fx+minx, fy+miny, extflag, texres);
}
}
}
else { /* no mipmap */
@ -1290,7 +1292,9 @@ static int imagewraposa_aniso(Tex *tex, Image *ima, ImBuf *ibuf, const float tex
}
else {
filterfunc(texres, ibuf, fx, fy, &AFD);
alpha_clip_aniso(ibuf, fx-minx, fy-miny, fx+minx, fy+miny, extflag, texres);
if (tex->texfilter != TXF_EWA) {
alpha_clip_aniso(ibuf, fx-minx, fy-miny, fx+minx, fy+miny, extflag, texres);
}
}
}