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A few questions about the new SDF render

From: Zhuyie
Subject: A few questions about the new SDF render
Date: Tue, 6 Jul 2021 21:29:44 +0800


I have a few questions about the new SDF render:

1. From the comments in ftsdf.c, "The basic idea of generating the SDF is taken from Viktor Chlumsky's research paper", i expect this is a multi-channel SDF generator, but "For @FT_RENDER_MODE_SDF the output bitmap buffer contains normalized distances that are packed into unsigned 8-bit values" imply this is a regular SDF. Which one is correct?

2. Are there any tutorials about how to use the SDF render? or some reference OpenGL shaders?

Thanks in advance,

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