charlotte a861452d68 Add user supplied mesh tag (#17648) ... # Objective Because of mesh preprocessing, users cannot rely on `@builtin(instance_index)` in order to reference external data, as the instance index is not stable, either from frame to frame or relative to the total spawn order of mesh instances. ## Solution Add a user supplied mesh index that can be used for referencing external data when drawing instanced meshes. Closes #13373 ## Testing Benchmarked `many_cubes` showing no difference in total frame time. ## Showcase https://github.com/user-attachments/assets/80620147-aafc-4d9d-a8ee-e2149f7c8f3b --------- Co-authored-by: IceSentry <IceSentry@users.noreply.github.com>		2025-02-10 22:38:13 +00:00
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animate_shader.rs
array_texture.rs
automatic_instancing.rs
compute_shader_game_of_life.rs
custom_phase_item.rs
custom_post_processing.rs
custom_render_phase.rs
custom_shader_instancing.rs
custom_vertex_attribute.rs
extended_material.rs
fallback_image.rs
gpu_readback.rs
shader_defs.rs
shader_material_2d.rs
shader_material_bindless.rs
shader_material_glsl.rs
shader_material_screenspace_texture.rs
shader_material.rs
shader_prepass.rs
specialized_mesh_pipeline.rs
storage_buffer.rs
texture_binding_array.rs