Implement Image-Based Lighting (IBL) #18

New issue

Open

opened 2026-01-18 14:18:14 +00:00 by akadmin · 0 comments

akadmin commented

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

Owner

Description:
Add environment lighting using precomputed irradiance and radiance maps for realistic reflections.
Tasks:

Load HDR environment maps (equirectangular format)
Generate cubemap from equirectangular map
Precompute irradiance map (diffuse IBL)
Precompute prefiltered environment map (specular IBL)
Generate BRDF integration lookup table
Update fragment shader with IBL calculations
Add skybox rendering
Test with multiple environment maps

Acceptance Criteria:

Environment reflections visible on metallic surfaces
Diffuse lighting from environment looks natural
BRDF lookup table correctly applied
Skybox renders behind geometry

Related Issues: Depends on #17
Resources:

LearnOpenGL IBL tutorial
Poly Haven for HDR environment maps

Estimated Time: 4-5 days

Description: Add environment lighting using precomputed irradiance and radiance maps for realistic reflections. Tasks: - [ ] Load HDR environment maps (equirectangular format) - [ ] Generate cubemap from equirectangular map - [ ] Precompute irradiance map (diffuse IBL) - [ ] Precompute prefiltered environment map (specular IBL) - [ ] Generate BRDF integration lookup table - [ ] Update fragment shader with IBL calculations - [ ] Add skybox rendering - [ ] Test with multiple environment maps Acceptance Criteria: Environment reflections visible on metallic surfaces Diffuse lighting from environment looks natural BRDF lookup table correctly applied Skybox renders behind geometry Related Issues: Depends on #17 Resources: LearnOpenGL IBL tutorial Poly Haven for HDR environment maps Estimated Time: 4-5 days