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(GDC 2018) Rendering Technology in Agents of Mayhem

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This talk, presented at GDC 2018, covers some of the main rendering technologies used on Volition’s ‘Agents of Mayhem’. The presentation includes Volition’s adaptation of Weighted Blended Order-Independent Transparency for use with additive as well as non-additive alpha. Also covered is Volition’s approach to tile-based deferred shading, which breaks shading into multiple shaders applied per tile based on feature sets to improve SIMD occupancy. Volition’s implementation of light-blockers, which extend standard light-clip planes to finite rectangles instead of only infinite planes is also be covered, as well as how these light-blockers can be applied to Light Propagation Volumes for GI to greatly reduce light leakage.