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# Objective - The StandardMaterial always uses ATTRIBUTE_UV_0 for each texture except lightmap. This is not flexible enough for a lot of gltf Files. - Fixes #12496 - Fixes #13086 - Fixes #13122 - Closes #13153 ## Solution - The StandardMaterial gets extended for each texture by an UvChannel enum. It defaults to Uv0 but can also be set to Uv1. - The gltf loader now handles the texcoord information. If the texcoord is not supported it creates a warning. - It uses StandardMaterial shader defs to define which attribute to use. ## Testing This fixes #12496 for example:  For testing of all kind of textures I used the TextureTransformMultiTest from https://github.com/KhronosGroup/glTF-Sample-Assets/tree/main/Models/TextureTransformMultiTest Its purpose is to test multiple texture transfroms but it is also a good test for different texcoords. It also shows the issue with emission #13133. Before:  After:  |
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Bevy PBR
