Colored Shadow Penumbra
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Oscar Sanz
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Colored Shadow Penumbra is a technical blog article by Oscar Sanz.
Short Unreal Engine tech-art note on adding colored shadow penumbra by editing deferred lighting shaders for Substrate and non-Substrate paths. Explains tradeoffs versus post-process approaches, dynamic-light limits, and a cheap saturation blend driven by surface shadow terms. Aimed at UE technical artists and shader programmers wanting a launcher-friendly engine-shader tweak. How to edit the UE5 Engine Shaders to have Colored Penumbra
It is aimed at intermediate graphics programmers and matches the audience implied by Oscar Sanz's other work.
The article is a free HTML blog post meant to be read in one sitting, with diagrams or code snippets embedded in the page.
It is useful when you want practical detail beyond a title or store listing and prefer primary-source explanation from the author or maintainer.
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