Feature: glTF Pipeline, Media Streaming, Async Shaders, and Animation Workspace

[TamasPetii]

Overview

This pull request introduces massive enhancements to the engine's rendering capabilities, asset processing pipelines, and editor workspaces. Major highlights include a completely revamped asynchronous shader compiler, native video/audio streaming pipelines, full glTF support, and a new 16-bucket material system optimized for early fragment testing.

Key Features

Rendering & Graphics

• 16-Bucket Material System: Alpha-tested and opaque materials are now handled by separate pipelines to maximize the efficiency of the Early Fragment Test.
• Async Shader Pipeline: Completely redesigned the shader architecture, featuring an asynchronous shader manager and utilizing a robust raw -> cooked -> gpu processor split.
• MSAA Support: Implemented Multi-Sample Anti-Aliasing (MSAA) and resolved deferred WBOIT MSAA issues.
• Advanced Material & Shadow Logic: Added clearcoat PBR logic, resolved alpha testing shadow issues, and implemented alpha-tested point and spot shadows.

Asset & Media Pipelines

• glTF Integration: Full support for loading glTF models and animations, alongside an initial pipeline and sample assets.
• Audio Pipeline: Complete 2D/3D audio management following the raw -> cooked -> gpu/cpu asset model.
• Video Pipeline: Hardware-accelerated video streaming utilizing FFmpeg and native Vulkan H.264 decoding. Video streams can now be applied directly as material options.

Editor & Workspaces

• Animation Workspace: Added an animation viewport and hierarchy view. Integrated ImGui Neo Sequencer and ImGuizmo for timeline editing and spatial manipulation.
• Audio Workspace: Implemented audio preview windows featuring a stale buffer mechanism to generate and render audio texture waveforms.
• Statistics & Debugging: Refactored the statistics window (MVI architecture) and implemented a Jolt debug renderer.

Core, Physics & Build

• Physics: Integrated Box3D physics alongside the existing Jolt physics implementation.
• Core Systems: Refactored the Service Locator and implemented a pipeline override mechanism.
• Build & Repo Maintenance: Updated submodules (CLion setups, ImGui tools), added file licenses, and resolved various Linux build/installation issues.

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Media Showcase

Video Overview:

(Click on the image to start video)

MSAA Implementation:

Animation Workspace (with Neo Sequencer):

Audio Workspace & Waveforms: