Scene : Adds KHR_punctual_lights extension handling #3

Merged

informator merged 4 commits from chore/khr-punctual-lights into chore/variousEnhancements

2026-09-12 13:28:40 +01:00

informator commented

2026-09-05 14:28:27 +01:00

Owner

Extend ECS Light component (Type, Range, InnerConeAngle, OuterConeAngle)
Extend light asset according KHR_puctual_lights specs and along with ECS Light component
Update GPU Vk::LightData struct
Update pbr.slang ComputeRadiance method to handle different light types

- Extend ECS Light component (Type, Range, InnerConeAngle, OuterConeAngle) - Extend light asset according KHR_puctual_lights specs and along with ECS Light component - Update GPU Vk::LightData struct - Update pbr.slang ComputeRadiance method to handle different light types

informator added the

enhancement

label

2026-09-05 14:28:27 +01:00

informator self-assigned this

2026-09-05 14:28:27 +01:00

informator added 4 commits

2026-09-05 14:28:27 +01:00

Add KHR_lights_punctual light save/load (directional/point/spot) 0ecbb17dc3

- Core: shared Bz::LightType {Directional, Point, Spot}
- ECS Light component: + type, range, inner/outer cone angles (Color.w = intensity kept)
- Vk::LightData DTO: 4 x vec4 (position/color/direction/params); LightSystem packs
  world direction from node -Z rotation for directional/spot, type+range+cone in params
- shaders: per-type ComputeRadiance (directional no falloff, point/spot inverse-square
  with optional range cutoff, spot angular cone via cosine interpolation)
- Asset layer: LightAsset + ModelNode::LightIndex + ModelAsset::Lights
- GltfLoader: ParseGLTF reads tinygltf native KHR_lights_punctual (model.lights,
  node.light); InstantiateModelAsset creates ECS Light components
- SceneSerializer: light entities get their own ModelNode; light/marker-mesh round-trips
- GltfWriter: emits lights + node light refs (tinygltf adds extensionsUsed)
- scene_roundtrip: + light checks + synthetic all-types light roundtrip (passes)

gitignore: ignore loader round-trip output files d30ad12057

docs: AGENTS.md reflect KHR_lights_punctual light load/save c8cb6cb20a

Fix missing glTF textures (resolve URI against model dir) + Light inspector a83bfecd91

- InstantiateModelAsset takes a baseDir; LoadAssetTexture resolves relative image
  URIs against it (was CWD-relative, so sponza/damagedHelmet textures never loaded)
- baseDir = path.parent_path() threaded from LoadEntitiesFromGLTF and SceneManager::LoadScene
- Demo entity inspector: Light viewer/editor (color+intensity, type combo, range,
  spot cone angles in degrees, live-applied) and functional Add Component popup
  (Light / Camera); the + button opened a popup that previously rendered nothing

Verified: damagedHelmet loads all 5 maps, sponza loads 70, demo runs without
validation errors; scene_roundtrip still passes.

informator added this to the 0.1 project

2026-09-05 14:28:28 +01:00

informator commented

2026-09-12 13:28:33 +01:00

Author

Owner

Still having issues :

Different light type (point, sport, directionnal) not well implemented
Rough KHR_punctual_lights support, still need polish and in-depth test

Still having issues : - Different light type (point, sport, directionnal) not well implemented - Rough KHR_punctual_lights support, still need polish and in-depth test

informator merged commit 425367a3b3 into chore/variousEnhancements

2026-09-12 13:28:40 +01:00

informator deleted branch chore/khr-punctual-lights

2026-09-12 13:28:40 +01:00

informator referenced this pull request from a commit

2026-09-12 13:28:41 +01:00

Merge pull request 'Scene : Adds KHR_punctual_lights extension handling' (#3) from chore/khr-punctual-lights into chore/variousEnhancements