AutoExposureAsset

Remarks

⚠ It publishes a buffer, not a texture, under a fixed name — so a !Tonemap picks it up by naming that resource in exposureBuffer rather than by naming this node. The value is produced on the device and consumed on the device; a host that read it back would pay a stall and a frame of latency for a number it never looks at.

Fields and properties (16)

• public string Name

  The node's name, for debug groups and for a human reading the file.

• public bool Enabled

  Whether the node runs.

• public string Source

  The scene colour it measures.

• public float DeltaTime

  How long a frame is, for the adaptation rates below.

• public float BrightenRate

  How fast the eye adapts from dark to bright.

• public float DarkenRate

  How fast it adapts from bright to dark, which is slower in life and here.

• public float MiddleGrey

  What the measured average is mapped to.

• public float MinimumExposure

  The dimmest exposure it will settle at.

• public float MaximumExposure

  The brightest exposure it will settle at.

• public int StartSize

  The edge of the first reduction, in texels.

• public bool UseHistogram

  Whether the frame is metered by a histogram rather than by a geometric mean.

• public float MinimumLogLuminance

  The darkest luminance the histogram resolves, as a base-2 log.

• public float MaximumLogLuminance

  And the brightest.

• public float LowPercentile

  The fraction of the frame discarded from the dark end before the mean is taken.

• public float HighPercentile

  And from the bright end.

• public float MeteringPower

  How strongly the centre of the frame counts for more than its edge.

Used by (4)

• PostEffectFactoryVixen.Rendering.PostFx
• PostEffectTestsVixen.Rendering.PostFx.Tests
• TypeRegistrationVixen.Rendering.PostFx
• Vixen_Rendering_PostFx_AutoExposureAssetSerializerVixen.Rendering.PostFx