This commit overhauls the scene management and streaming architecture to use a chunk-based asynchronous loading paradigm, and completely decouples the graphics runtime from editor compilation services to eliminate circular dependencies.
Shader Bridge Decoupling:
- Resolved circular runtime dependency between Ghost.Graphics and Ghost.Editor.Core.
- Shifted EditorShaderCompilerBridge from querying EngineCore to a decoupled event-driven model using IShaderCompilationBridge.
- Introduced custom stack-friendly delegate ShaderVariantCompiledHandler to handle ReadOnlySpan<ShaderByteCode> compilation buffers while maintaining zero-allocation constraints.
- Updated ShaderLibrary to self-manage bytecode caching and stale pipeline eviction by listening to compiler events.
Scene & Streaming Overhaul:
- Re-implemented Scene.cs with a high-performance two-phase asynchronous scene loading architecture.
- Replaced outdated per-entity component processing with chunk-level shared data management using the ISharedComponent paradigm for SceneID.
- Optimized ECS Query.cs and Archetype.cs to handle streaming chunk operations efficiently.
- Updated AssetManager, ResourceStreamingProcessor, and asset entries (SceneAssetEntry, MeshAssetEntry, TextureAssetEntry) to support the new streaming workflow.
Major refactor of graphics pipeline keying, shader cache, and resource allocation.
Replaced most Allocator usage with AllocationHandle, modernized logger usage,
and unified pipeline state keys. Updated MeshUtility to use AllocationHandle.FreeList.
Added new shader pipeline architecture docs and improved error handling throughout.
BREAKING CHANGE: Pipeline keying and resource allocation APIs have changed.
Added NoAccess to attachment ops for depth/stencil, updated D3D12 and RenderGraph to handle new ops, and improved axis/handedness conversion in mesh loading. Enabled meshlet color hashing in test shader. Changed default rasterizer winding, added format helpers, and updated camera transform for correct mesh orientation. JobScheduler usage commented out for now.
Refactor meshlet data structures to use packed uint triangle indices, update meshlet cooking and upload logic, and align HLSL mesh shader. Add MeshRenderPass with bindless rendering and blit support. Improve RenderExtractionSystem, RootSignatureLayout, and TestRenderPipeline. Update GraphicsTestWindow for new pipeline and meshlet logic. Includes code cleanups and comments.
Refactored descriptor allocation and release logic by introducing `IDescriptorAllocator` and replacing `DescriptorHeapAllocator` with `D3D12DescriptorHeap`. Updated descriptor structs to include validation properties and improved memory management with `ReadOnlySpan`.
Enhanced shader compilation by introducing `ShaderStage` and `CompilerVersion` enums, enabling more flexible and maintainable shader handling.
Refactored `Mesh` to use `IBuffer` for vertex and index buffers, added bindless descriptor support, and improved resource cleanup.
Updated `RenderSystem` and other components for better initialization, error handling, and disposal logic. General improvements to code readability and maintainability.
