Renderer
by
Renderer
Author: Arnas
BaseRenderer
- Shared renderer interface.
- Supports DirectX 11 backend with DirectX 12 in progress.
DX11 Renderer
- Primary rendering backend.
DX12 Renderer
- Currently renders a triangle.
Rendering Pipeline (Main)
1. Shadow Pass
Generates a show map from the directional light’s perspective.
Outputs:
- Shadow depth texture.
2. Scene Pass
Renders scene colour and scene depth.
Outputs:
- Scene colour texture.
- Scene depth texture.
3. Occlusion Pass
Generates an occlusion buffer for the first version of volumetric lighting, inspired by GPU Gems 3.
Outputs:
- Occlusion texture.
4. Volumetric Pass
Performs volumetric lighting via ray marched participating media.
Stages:
- Samples scene data (scene colour and depth).
- Reconstruct world position.
- Create camera ray.
- Intersect with light volumes.
- March through media.
- Get density.
- Shadow/occlusion tests.
- Accumulate scattering.
- Apply transmittance (light absorption).
- Blend with scene colour.
5.1. Blend Pass
Combines all render targets (scene and volumetric lighting) into final frame.
Output:
- Back buffer
5.2. Debug Pass
Renderers buffer views for debugging purposes.
Debug View:
- Depth buffer.
- Shadow map buffer.
- Scene buffer.
- Occlusion buffer.
- Volumetric lighting buffer.
- enum class DebugTexture
Shaders
Volumetric Lighting - Goes over the main volumetric lighting of the artefact.