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Differential D4205 Diff 13203 manual/render/eevee/screen_space_effects/reflections.rst

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manual/render/eevee/screen_space_effects/reflections.rst

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:Panel: :menuselection:`Render --> Screen Space Reflections` :Panel: :menuselection:`Render --> Screen Space Reflections`
Refractions Refractions
Screen space refractions work the same way as screen space reflections and use same parameters. Screen space refractions work the same way as screen space reflections and use the same parameters.
But they are not enabled by default on all surfaces. But they are not enabled by default on all surfaces.
Enabling it will have a small performance cost. Enabling it will have a small performance cost.
You need to enable them in :menuselection:`Material Properties --> Options`. You need to enable them in :menuselection:`Material Properties --> Options`.
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Materials using screen space refractions will not be able to cast screen space reflections. Materials using screen space refractions will not be able to cast screen space reflections.
Half Resolution Trace Half Resolution Trace
Use half resolution ray tracing. Only cast a ray for every fourth pixels. Use half resolution ray tracing. Only cast a ray for every fourth pixel.
Enabling this option reduces drastically video memory usage and increase performances at the cost of quality. Enabling this option drastically reduces video memory usage and increases performance at the cost of quality.
Trace Precision Trace Precision
Increase precision of the ray trace but introduce more noise and lower the maximum trace distance. Increase precision of the ray trace but introduce more noise and lower the maximum trace distance.
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- Only one glossy BSDF can emit screen space reflections. - Only one glossy BSDF can emit screen space reflections.
- The chosen BSDF is currently arbitrary chosen. - The one BSDF is currently arbitrarily chosen.
- Only one refraction event is correctly modeled. - Only one refraction event is correctly modeled.
- Screen Space Reflections will reflect transparent object - Screen Space Reflections will reflect transparent objects
but without accurate positioning due to the one layer depth buffer. but without accurate positioning due to the one layer depth buffer.
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