Implement PBR Shader Pipeline

akadmin commented

2026-01-18 14:17:29 +00:00

Owner

Description:
Implement physically based rendering with metallic-roughness workflow. Add support for PBR material textures.
Tasks:

Research PBR theory (reflectance equation, BRDF)
Update fragment shader with PBR lighting model
Implement Cook-Torrance BRDF
Add support for albedo/base color texture
Add support for metallic texture
Add support for roughness texture
Add support for normal maps (tangent-space normal mapping)
Add support for ambient occlusion maps
Create material struct to hold texture references
Update descriptor sets for multiple material textures
Test with PBR test models

Acceptance Criteria:

PBR materials render correctly
Metals look metallic, dielectrics look correct
Roughness affects specular highlight size
Normal maps add surface detail

Related Issues: Depends on #14
Resources:

LearnOpenGL PBR tutorial
Sascha Willems Vulkan PBR example

Estimated Time: 5-7 days

Description: Implement physically based rendering with metallic-roughness workflow. Add support for PBR material textures. Tasks: - [x] Research PBR theory (reflectance equation, BRDF) - [x] Update fragment shader with PBR lighting model - [x] Implement Cook-Torrance BRDF - [x] Add support for albedo/base color texture - [x] Add support for metallic texture - [x] Add support for roughness texture - [x] Add support for normal maps (tangent-space normal mapping) - [x] Add support for ambient occlusion maps - [x] Create material struct to hold texture references - [x] Update descriptor sets for multiple material textures - [x] Test with PBR test models Acceptance Criteria: PBR materials render correctly Metals look metallic, dielectrics look correct Roughness affects specular highlight size Normal maps add surface detail Related Issues: Depends on #14 Resources: LearnOpenGL PBR tutorial Sascha Willems Vulkan PBR example Estimated Time: 5-7 days