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Use absolute value of Y scale for 3D midtex
- Somebody might want to set a midtexture's Y scale negative to flip it vertically. I'm pretty sure this would mess up 3D mid textures if we don't make it positive again for those.
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@ -228,7 +228,7 @@ bool P_GetMidTexturePosition(const line_t *line, int sideno, fixed_t *ptextop, f
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FTexture * tex= TexMan(texnum);
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if (!tex) return false;
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fixed_t totalscale = FixedMul(side->GetTextureYScale(side_t::mid), tex->yScale);
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fixed_t totalscale = abs(FixedMul(side->GetTextureYScale(side_t::mid), tex->yScale));
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fixed_t y_offset = side->GetTextureYOffset(side_t::mid);
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fixed_t textureheight = tex->GetScaledHeight(totalscale) << FRACBITS;
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if (totalscale != FRACUNIT && !tex->bWorldPanning)
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