Temporal Antialiasing (TAA)

[JMS55]

Objective

• Implement an alternative antialias technique
• TAA scales based off of view resolution, not geometry complexity
• TAA filters textures, firefly pixels, and other aliasing not covered by MSAA
• TAA additionally will reduce noise / increase quality in future stochastic rendering techniques
• Closes Temporal Anti-Aliasing #3663

Solution

• Add a temporal jitter component
• Add a motion vector prepass
• Add a TemporalAntialias component and plugin
• Combine existing MSAA and FXAA examples and add TAA

Followup Work

• Prepass motion vector support for skinned meshes
  • Move uniforms needed for motion vectors into a separate bind group, instead of using different bind group layouts
• Reuse previous frame's GPU view buffer for motion vectors, instead of recomputing
• Mip biasing for sharper textures, and or unjitter texture UVs Mipmap Biasing #7323
• Compute shader for better performance
• Investigate FSR techniques
  • Historical depth based disocclusion tests, for geometry disocclusion
  • Historical luminance/hue based tests, for shading disocclusion
  • Pixel "locks" to reduce blending rate / revamp history confidence mechanism
• Orthographic camera support for TemporalJitter
• Figure out COD's 1-tap bicubic filter

---

Changelog

• Added MotionVectorPrepass and TemporalJitter
• Added TemporalAntialiasPlugin, TemporalAntialiasBundle, and TemporalAntialiasSettings

[superdump]

I agree with others here, it should be TemporalAntiAlias.

[superdump]

From where do these come? And what do they mean?

[JMS55]

I made it up, and decided on these values through trial and error. I'll add some docs.

[superdump]

I did see mention of 90% / 10% somewhere, but the MIN_HISTORY_BLEND_RATE value I don't know.

[superdump]

I think this meets the bar. Thanks for implementing this in the first place, and for your patience waiting for review. :)