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Re-add and disable blit_with_interpolate_overlay

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This commit is contained in:
kwolekr 2016-04-07 04:01:43 -04:00
parent ecdd5921a1
commit c3993f6604
1 changed files with 31 additions and 0 deletions
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31
src/client/tile.cpp
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@ -1748,6 +1748,37 @@ static void blit_with_alpha_overlay(video::IImage *src, video::IImage *dst,
} }
} }
// This function has been disabled because it is currently unused.
// Feel free to re-enable if you find it handy.
#if 0
/*
Draw an image on top of an another one, using the specified ratio
modify all partially-opaque pixels in the destination.
*/
static void blit_with_interpolate_overlay(video::IImage *src, video::IImage *dst,
v2s32 src_pos, v2s32 dst_pos, v2u32 size, int ratio)
{
for (u32 y0 = 0; y0 < size.Y; y0++)
for (u32 x0 = 0; x0 < size.X; x0++)
{
s32 src_x = src_pos.X + x0;
s32 src_y = src_pos.Y + y0;
s32 dst_x = dst_pos.X + x0;
s32 dst_y = dst_pos.Y + y0;
video::SColor src_c = src->getPixel(src_x, src_y);
video::SColor dst_c = dst->getPixel(dst_x, dst_y);
if (dst_c.getAlpha() > 0 && src_c.getAlpha() != 0)
{
if (ratio == -1)
dst_c = src_c.getInterpolated(dst_c, (float)src_c.getAlpha()/255.0f);
else
dst_c = src_c.getInterpolated(dst_c, (float)ratio/255.0f);
dst->setPixel(dst_x, dst_y, dst_c);
}
}
}
#endif
/* /*
Apply color to destination Apply color to destination
*/ */