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Subject: Re: [9front] [patchset] libgeometry revamp
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Good evening,

as a professional game developer who also specializes in 3d rendering with only experience with GPUs and shaders I have to ask: How do you handle sampling textures via coordinates? I mean, you get the barycentric coordinates, calculate the UV for that pixel, and then sample the pixel from the texture, I guess, but isn't it quite slow on a CPU to read that texture like that, especially considering caching etc.?

I mean, obviously you wouldn't draw the pixels directly (each pixel a draw call), but instead generate the image in-memory and draw it completely within one draw call.

For me it's kinda hard to learn these things since I don't know what exactly to search for (and again, most of my experience is from shaders), so some hint would be helpful, even if it's just a response like "no, this is the way to do it usually and it's fast enough".

sirjofri