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Mirage Pro/Compatibility and Limitations: Difference between revisions

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= Limitations =
= Limitations =
Due to their nature, Mirage impostors have a few limitations.
Due to their nature, Mirage Pro impostors have a few limitations.
 
; Full rotation compatibility
: Impostors are not rotated around the X and Z axes even if their parent is.


; Lossy scale
; Lossy scale
: Mirage uses the [https://docs.unity3d.com/ScriptReference/Transform-lossyScale.html lossyScale] of the source objects. If the source objects are skewed by nested non-uniform scaling and rotation, the impostor may appear close to the source but unskewed.
: Mirage uses the [https://docs.unity3d.com/ScriptReference/Transform-lossyScale.html lossyScale] of the source objects. If the source objects are skewed by nested non-uniform scaling and rotation, the impostor may appear close to the source but unskewed.
; Shadows
<!-- EDITOR NOTE: OUTDATED. Recent updates made shadows face the light, sample the light-facing atlas cell, handle self-shadowing, and stay stable across cascades. The "only correct from front/back" claim is no longer true. Rewrite this entry during the content refresh (no dedicated depth-written shadow pass was added, so keep the relevant caveats). -->
: Mirage impostors are compatible with shadows, but they are not physically correct, since only the alpha-clipped quad is projected rather than a dedicated shadow pass. Shadows are correct when the light comes from the front or the back, but not from the sides of the impostor. This is a simplicity choice: a correct shadow would add a GPU-intensive shader pass, and shadows are usually not even visible from the impostor's nominal distance. It also keeps Mirage natively pipeline-independent, since Shader Graph is not yet designed to add custom passes.


= Contact =
= Contact =

Latest revision as of 17:42, 8 July 2026

Mirage documentation

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Compatible objects

Mirage impostors are compatible with any object that has a MeshFilter and a MeshRenderer attached. Translations (all axes), scaling (all axes) and rotation (around the vertical axis only) are supported.

Limitations

Due to their nature, Mirage Pro impostors have a few limitations.

Lossy scale
Mirage uses the lossyScale of the source objects. If the source objects are skewed by nested non-uniform scaling and rotation, the impostor may appear close to the source but unskewed.

Contact

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