fundamental-gpu-component-model

To cache WebGPU render pipelines safely, implement a deterministic hash that exhaustively covers shader generation and fixed-function pipeline state. This ensures pipeline cache keys match the generated shaders and binding layouts, preventing cache corruption and WGPU validation errors across frames.

Composing WebGPU render effects uses a RenderSlice-style onion model with forward setup_pass and reverse post_setup_pass ordering. This middleware approach cleanly layers binding setup and post-processing effects while maintaining correct render dispatch sequence.

WebGPU shader binding layout mismatches occur when setup_pass and post_setup_pass binding declarations do not exactly match the build and post_build binding order and types. Enforcing a strict binding contract between shader stage registration and pass binding setup resolves the mismatch.

To make a WebGPU render component auto-derive draw dispatch behavior, implement the ShaderHashProvider, GraphicsShaderProvider, and ShaderPassBuilder super-traits. This automatically generates the RenderComponent trait, handling pipeline lookup, setup, and draw dispatch without manual implementation.

Yes, WebGPU pipeline caching requires hashing all fixed-function state inputs. The hash_pipeline implementation must exhaustively cover every shader-generation input and fixed-function pipeline state to ensure deterministic cache keys and prevent pipeline lookup mismatches.

You need to implement ShaderHashProvider for WebGPU shader composition when building renderable GPU entities that require deterministic pipeline caching. It provides the hash_type_info and exhaustive hash_pipeline coverage needed to ensure pipeline cache keys match shader generation and fixed-function state.