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Fix FillSimplePoly() for 1-pixel tall or wide textures

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This commit is contained in:
Marisa Heit 2016-11-05 22:29:02 -05:00
parent ae28c9b29c
commit dbc54fbca0
1 changed files with 20 additions and 4 deletions
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24
src/v_draw.cpp
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@ -1348,10 +1348,26 @@ void DCanvas::FillSimplePoly(FTexture *tex, FVector2 *points, int npoints,
R_SetupSpanBits(tex);
R_SetSpanColormap(colormap != NULL ? &colormap->Maps[clamp(shade >> FRACBITS, 0, NUMCOLORMAPS-1) * 256] : identitymap);
R_SetSpanSource(tex->GetPixels());
scalex = double(1u << (32 - ds_xbits)) / scalex;
scaley = double(1u << (32 - ds_ybits)) / scaley;
ds_xstep = xs_RoundToInt(cosrot * scalex);
ds_ystep = xs_RoundToInt(sinrot * scaley);
if (ds_xbits != 0)
{
scalex = double(1u << (32 - ds_xbits)) / scalex;
ds_xstep = xs_RoundToInt(cosrot * scalex);
}
else
{ // Texture is one pixel wide.
scalex = 0;
ds_xstep = 0;
}
if (ds_ybits != 0)
{
scaley = double(1u << (32 - ds_ybits)) / scaley;
ds_ystep = xs_RoundToInt(sinrot * scaley);
}
else
{ // Texture is one pixel tall.
scaley = 0;
ds_ystep = 0;
}
// Travel down the right edge and create an outline of that edge.
pt1 = toppt;