PBREmissivePass could use a different algo? #853
Labels
Enhancement
This issue is about a new feature rather than a bug.
Performance
This issue is about performance enhancement.
In games, often a bilateral gaussian is used rather than mipmap filtering.
Which means it could fast using stack blur rather than a mipmap pyramid.
For information, sampling the mipmaps is almost the biggest cost of the whole PBR system.
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