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Interface: TemporalAntiAliasingOptions

Options for Temporal Anti-aliasing (TAA) Most TAA parameters are extremely costly to change, as they will trigger the TAA post-process shaders to be recompiled. These options should be changed or set during initialization. filterWidth, feedback and jitterPattern, however, can be changed at any time.

feedback of 0.1 effectively accumulates a maximum of 19 samples in steady state. see "A Survey of Temporal Antialiasing Techniques" by Lei Yang and all for more information.

Properties​

boxClipping?​

optional boxClipping: "ACCURATE" | "CLAMP" | "NONE"

Clipping algorithm:

  • NONE: no rejections (use for debugging)
  • CLAMP: clamping
  • ACCURATE: accurate box clipping

Default​

'ACCURATE'

Defined in​

src/types/Options.ts:201

enabled​

enabled: boolean

Enable or disable TAA

Default​

false

Defined in​

src/types/Options.ts:186

feedback?​

optional feedback: number

History feedback, between 0 (maximum temporal AA) and 1 (no temporal AA).

Default​

0.12

Defined in​

src/types/Options.ts:171

filterHistory?​

optional filterHistory: boolean

Whether to filter the history buffer

Default​

true

Defined in​

src/types/Options.ts:219

filterInput?​

optional filterInput: boolean

Whether to apply the reconstruction filter to the input

Default​

true

Defined in​

src/types/Options.ts:224

filterWidth?​

optional filterWidth: number

Reconstruction filter width typically between 0.2 (sharper, aliased) and 1.5 (smoother)

Default​

1.0

Defined in​

src/types/Options.ts:166

historyReprojection?​

optional historyReprojection: boolean

Whether to apply history reprojection (debug option)

Default​

true

Defined in​

src/types/Options.ts:244

jitterPattern?​

optional jitterPattern: "RGSS_X4" | "UNIFORM_HELIX_X4" | "HALTON_23_X8" | "HALTON_23_X16" | "HALTON_23_X32"

Jitter Pattern:

  • RGSS_X4: 4-samples, rotated grid sampling
  • UNIFORM_HELIX_X4: 4-samples, uniform grid in helix sequence
  • HALTON_23_X8: 8-samples of halton 2,3
  • HALTON_23_X16: 16-samples of halton 2,3
  • HALTON_23_X32: 32-samples of halton 2,3

Default​

'HALTON_23_X16'

Defined in​

src/types/Options.ts:213

lodBias?​

optional lodBias: number

Texturing lod bias (typically -1 or -2)

Default​

-1.0

Defined in​

src/types/Options.ts:176

preventFlickering?​

optional preventFlickering: boolean

Adjust the feedback dynamically to reduce flickering

Default​

false

Defined in​

src/types/Options.ts:239

sharpness?​

optional sharpness: number

Post-TAA sharpen, especially useful when upscaling is true.

Default​

0.0

Defined in​

src/types/Options.ts:181

upscaling?​

optional upscaling: boolean

Enable or disable upscaling

Default​

false

Defined in​

src/types/Options.ts:191

useYCoCg?​

optional useYCoCg: boolean

Whether to use the YcoCg color-space for history rejection

Default​

false

Defined in​

src/types/Options.ts:229

varianceGamma?​

optional varianceGamma: number

High values increases ghosting artefact, lower values increases jittering, range [0.75, 1.25]

Default​

1.0

Defined in​

src/types/Options.ts:234