Hybrid shader for simultaneous edge detection and ambient shading
- Autores: Ilya Vladimirovich Tsivilskiy, Ruslan Rinadovich Gaisin, Vlada Vladimirovna Kugurakova
- Localización: QUID: Investigación, Ciencia y Tecnología, ISSN-e 2462-9006, ISSN 1692-343X, Nº. Extra 1, 2017, págs. 345-351
- Idioma: inglés
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Resumen
In this work we present a novel post-processing effect that can be applicable for both edge detection visualization and for emulation of ambient shading. Unlike different classic shaders suitable for these tasks, our effect has single shader code and does both the effects simultaneously: with a certain settings, the same codebase works as the edge detector or an ambient occlusion effect or as both of them at the same time, that is why the shader is useful for rendering of industrial design, architectural works and engineering. The algorithm uses only depth texture without screenspace normal texture and without additional noise texture that is a key component of a rendering pipeline of most of known screenspace ambient occlusion algorithms. The shader consist of 2 stages: standard render pass (that produces scene texture with no lights and shadows) + contours extraction and (or) ambient occlusion pass. Presented algorithm is relatively simpler in number of operations, being more amenable for mobile platforms.
