There are some 3D Asymptote figures (see 13.7.15, for example) where we set the opacity on one surface -- usually a tangent plane or similar -- to 100%. This was to work around a bug in OpenGL that caused bleed-through of the colours.
With Asymptote 3.13, we have the option to replace OpenGL rendering with Vulkan rendering. I think it would be worth trying out the old settings for these figures to see if the results are any better than they used to be.
There are some 3D Asymptote figures (see 13.7.15, for example) where we set the opacity on one surface -- usually a tangent plane or similar -- to 100%. This was to work around a bug in OpenGL that caused bleed-through of the colours.
With Asymptote 3.13, we have the option to replace OpenGL rendering with Vulkan rendering. I think it would be worth trying out the old settings for these figures to see if the results are any better than they used to be.