fix: use transformedNormalView for MRT to fix InstancedMesh normals#1282
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The root cause was using `normalView` instead of `transformedNormalView` for MRT output. Plain normalView doesn't account for instance matrix transformations (Three.js #18497), causing incorrect normals for InstancedMesh decorations. transformedNormalView properly handles: - Instance matrix rotations - Skinning transformations - Morph target modifications This fixes the triangular artifacts on decorations when SSAO/GTAO is enabled, as GTAO now receives correctly transformed normals. Also reverted forced normal recomputation - use original GLTF normals instead. https://claude.ai/code/session_012kqvccEiiHNQHAjUEoposi
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The root cause was using
normalViewinstead oftransformedNormalViewfor MRT output. Plain normalView doesn't account for instance matrix transformations (Three.js #18497), causing incorrect normals for InstancedMesh decorations.transformedNormalView properly handles:
This fixes the triangular artifacts on decorations when SSAO/GTAO is enabled, as GTAO now receives correctly transformed normals.
Also reverted forced normal recomputation - use original GLTF normals instead.
https://claude.ai/code/session_012kqvccEiiHNQHAjUEoposi