Renderer Resource Manager Rewrite: From Vulkan to NVRHI // Hazel Engine Stream (25.06.2025) скачать в хорошем качестве

Renderer Resource Manager Rewrite: From Vulkan to NVRHI // Hazel Engine Stream (25.06.2025)

Watch Live ►   / thecherno   Support and get Hazel ►   / thecherno   Discord channel for live streams ►   / discord   00:00 Opening & Context Coldest day of the year in Melbourne at 7°C (very important note) Shows current Hazel state: red clear color working through new renderer Scene renderer successfully running clear passes, but main rendering disabled Goal: Get 2D rendering working first as stepping stone to 3D 06:00 Resource Management Deep Dive Core Problem: Need to bridge shader resources (textures, buffers) with render passes Resource Frequency Concept: Different update frequencies for different resource types: Per-object: Material textures (most frequent) Per-render-pass: Camera uniforms (medium frequency) Static: BRDF lookup tables (least frequent) Descriptor Set Strategy: Using sets 0-3 for different frequency levels Explains why render passes take inputs rather than individual draw calls handling everything 30:00 Descriptor Set Manager Rewrite Major Refactor: Converting from Vulkan-specific VkDescriptorSet to NVRHI binding sets Data Structure Changes: Replacing VK write descriptors with NVRHI binding set descriptions Converting vector storage to static arrays for better memory layout Moving from descriptor pools to direct binding set creation Validation System: Maintains shader-driven validation where shaders define required inputs Dynamic Resource Handling: System for resources that can change (frame buffers, resizable buffers) 1:20:00 Shader Reflection System Input Declaration Creation: Moving shader resource declarations from old system to new NVRHI-based approach Type Mapping: Converting between shader types (uniform buffers, textures, storage buffers) and NVRHI binding types Render Input Types: Establishing consistent type system across different graphics APIs Validation Logic: Ensuring render passes have all required inputs before rendering 1:50:00 Architecture Cleanup Class Hierarchy Simplification: Removing Vulkan-specific subclasses (VulkanRenderPass, VulkanComputePass) API Abstraction: Moving toward single render pass and compute pass classes that work with any backend Code Organization: Relocating platform-specific code to appropriate locations 2:20:00 Debugging Session Build and Test: First compilation and runtime testing of new system Resource Validation Working: Camera uniform buffer successfully being validated Binding Set Creation: System creating NVRHI binding sets from render pass specifications Shader Dimension Issues: Debugging problems with texture dimension detection (1D vs 2D vs Cube) Sampler Separation: Encountering issues with HLSL's separate texture/sampler model vs Vulkan's combined approach Stream Summary by Claude Sonnet 4