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********
Sampling
********
EEVEE uses a process called Temporal Anti-Aliasing (TAA) which reduces :term:`Aliasing`.
TAA is sample based so the more samples the more aliasing is reduced at the cost of performance.
.. reference::
:Panel: :menuselection:`Render --> Sampling`
Viewport
========
.. _bpy.types.SceneEEVEE.taa_samples:
Samples
The number of samples to use in the 3D Viewport.
When setting this to zero the viewport will be resampled continuously.
.. _bpy.types.SceneEEVEE.use_taa_reprojection:
Temporal Reprojection
Reduces noise while moving the viewport or during animation playback. Can leave some ghosting.
.. _bpy.types.SceneEEVEE.use_shadow_jitter_viewport:
Jittered Shadows
Enable jittered shadows on the viewport.
Jittered shadows are always enabled for final renders.
This also affects shadows casted by transparent shadows.
Render
======
.. _bpy.types.SceneEEVEE.taa_render_samples:
Samples
The number of samples to use in the final render.
.. _bpy.types.SceneEEVEE.use_shadows:
Shadows
=======
.. _bpy.types.SceneEEVEE.shadow_ray_count:
Rays
Number of rays to trace for each light.
Higher values reduces the noise caused by random shadow sampling.
.. _bpy.types.SceneEEVEE.shadow_step_count:
Steps
Number of shadow map sample per shadow ray.
Higher step count results in softer shadows but have a higher cost.
.. _bpy.types.SceneEEVEE.use_volumetric_shadows:
Volumetric Shadows
Approximate light absorption of the surrounding volume objects. This makes the volumes more opaque to light.
This is a very computationally expensive option and has limitations.
.. _bpy.types.SceneEEVEE.volumetric_shadow_samples:
Steps
Number of steps to compute volumetric shadowing.
.. seealso:: :ref:`Volume Limitations <eevee-limitations-volumetrics>`.
.. _bpy.types.SceneEEVEE.shadow_resolution_scale:
Resolution
Resolution percentage of shadow maps.
Advanced
========
.. _bpy.types.SceneEEVEE.light_threshold:
Light Threshold
Minimum light intensity for a light to contribute to the lighting.
Used to compute the distance at which to cut-off lights influence.
Lower values improve performance.
.. seealso::
:ref:`Custom Distance <bpy.types.Light.use_custom_distance>` overrides this setting.
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