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tolelom
b516984015 feat(physics): add impulse collision response and physics_step 
Implements resolve_collisions() with impulse-based velocity correction and
Baumgarte-style position correction, plus physics_step() combining integrate,
detect_collisions, and resolve_collisions.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-03-25 10:38:42 +09:00
tolelom
b8c3b6422c feat(physics): add Semi-implicit Euler integration 
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-03-25 10:36:17 +09:00
tolelom
9bdb502f8f feat(physics): add RigidBody component and PhysicsConfig 2026-03-25 10:35:16 +09:00
tolelom
7d91e204cc docs: add Phase 5-1 collision detection status and deferred items 
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-03-25 10:27:13 +09:00
tolelom
c1c84cdbff feat(physics): add detect_collisions ECS integration 
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-03-25 10:17:26 +09:00
tolelom
0570d3c4ba feat(physics): add BVH tree for broad phase collision detection 
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-03-25 10:15:24 +09:00
tolelom
74694315a6 feat(physics): add narrow phase collision detection (sphere-sphere, sphere-box, box-box) 
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-03-25 10:14:05 +09:00
tolelom
cc24b19f93 feat(physics): add voltex_physics crate with Collider and ContactPoint 
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-03-25 10:12:22 +09:00
tolelom
8d3855c1a7 feat(math): add AABB type with intersection, merge, and containment 
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-03-25 10:10:27 +09:00
tolelom
7d59b1eed5 docs: add project status, deferred items, and CLAUDE.md 
- STATUS.md: completed phases, crate structure, test counts, next steps
- DEFERRED.md: simplified/postponed items per phase
- CLAUDE.md: build rules, wgpu quirks, project conventions

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-03-24 21:42:49 +09:00
tolelom
080ac92fbb fix(renderer): merge IBL into group(3) to stay within max_bind_groups limit of 4 
wgpu's default max_bind_groups is 4 (groups 0-3), but the PBR shader was
using group(4) for BRDF LUT bindings. This merges IBL bindings into the
shadow bind group (group 3) at binding slots 3-4, removes the standalone
IBL bind group layout/creation, and updates all examples accordingly.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-03-24 21:38:45 +09:00
tolelom
9202bfadef feat: add IBL demo with normal mapping and procedural environment lighting 
Fix pbr_demo, multi_light_demo, and shadow_demo to use the new 7-param
create_pbr_pipeline with PBR texture bind group (4-entry: albedo+normal)
and IBL bind group. Create ibl_demo showcasing a 7x7 metallic/roughness
sphere grid with IBL-based ambient lighting via BRDF LUT integration.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-03-24 21:34:06 +09:00
tolelom
5232552aa4 feat(renderer): add normal mapping and procedural IBL to PBR shader 
- Add tangent input (location 3) and TBN computation in vertex shader
- Add normal map sampling (group 1, bindings 2-3) for tangent-space normal mapping
- Add BRDF LUT binding (group 4, bindings 0-1) for specular IBL
- Add procedural sky environment function for diffuse/specular IBL
- Replace flat ambient with split-sum IBL approximation
- Add pbr_texture_bind_group_layout (4 entries: albedo + normal)
- Add create_pbr_texture_bind_group helper and flat_normal_1x1 texture
- Update create_pbr_pipeline to accept ibl_layout parameter (group 4)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-03-24 21:28:32 +09:00
tolelom
ea8af38263 feat(renderer): add BRDF LUT generator and IBL resources 
Implements CPU-based BRDF LUT generation using the split-sum IBL
approximation (Hammersley sampling, GGX importance sampling, Smith
geometry with IBL k=a²/2). Wraps the 256×256 Rgba8Unorm LUT in
IblResources for GPU upload via wgpu 28.0 API.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-03-24 21:19:09 +09:00
tolelom
4d7ff5a122 feat(renderer): add tangent to MeshVertex with computation in OBJ parser and sphere generator 
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-03-24 21:18:26 +09:00
tolelom
88fabf2905 docs: add Phase 4c normal mapping + IBL implementation plan 
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-03-24 21:16:39 +09:00
tolelom
5f962f376e feat: add shadow demo with directional light shadow mapping and 3x3 PCF 
- Add Mat4::orthographic() to voltex_math for light projection
- Fix pbr_demo and multi_light_demo to provide shadow bind group (group 3)
  required by updated PBR pipeline (dummy shadow with size=0 disables it)
- Create shadow_demo with two-pass rendering: shadow depth pass using
  orthographic light projection, then PBR color pass with shadow sampling
- Scene: ground plane, 3 spheres, 2 cubes with directional light

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-03-24 21:09:27 +09:00
tolelom
8f962368e9 feat(renderer): integrate shadow map sampling with 3x3 PCF into PBR shader 
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-03-24 21:03:31 +09:00
tolelom
b5a6159526 feat(renderer): add ShadowMap, shadow depth shader, and shadow pipeline 
Implements ShadowMap (2048x2048 Depth32Float texture with comparison sampler),
shadow_shader.wgsl (depth-only vertex shader), shadow_pipeline (front-face
culling, depth bias constant=2/slope=2.0), and associated uniform types.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-03-24 21:01:51 +09:00
tolelom
1ce6acf80c docs: add Phase 4b-2 shadow mapping implementation plan 
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-03-24 21:00:03 +09:00
tolelom
62f505c838 fix(renderer): align LightsUniform to match WGSL vec3 padding (1056 bytes) 
WGSL vec3<f32> requires 16-byte alignment, causing the shader to expect
1056 bytes while Rust struct was 1040. Added padding fields to match.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-03-24 20:57:10 +09:00
tolelom
fdfe4aaf5f feat: add multi-light demo with orbiting point lights and spot light 
Fix pbr_demo to use LightsUniform/LightData instead of old LightUniform.
Create multi_light_demo with 5 PBR spheres (varying metallic), a ground
plane, 4 colored orbiting point lights, a directional fill light, and a
spot light from above.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-03-24 20:55:24 +09:00
tolelom
b0934970b9 feat(renderer): add multi-light system with LightsUniform and updated PBR shader 
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-03-24 20:50:13 +09:00
tolelom
297b3c633f docs: add Phase 4b-1 multi-light implementation plan 
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-03-24 20:48:06 +09:00
tolelom
07497c3d80 feat: add PBR demo with metallic/roughness sphere grid 
7x7 grid of spheres demonstrating PBR material variation:
metallic increases along X axis, roughness along Y axis.
Uses dynamic UBO pattern for both camera and material uniforms.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-03-24 20:44:29 +09:00
tolelom
b09e1df878 feat(renderer): add PBR material, sphere generator, Cook-Torrance shader, and PBR pipeline 
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-03-24 20:41:02 +09:00
tolelom
cca50c8bc2 docs: add Phase 4a PBR rendering implementation plan 
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-03-24 20:38:54 +09:00
tolelom
b0c51aaa45 feat: add asset_demo with Handle-based mesh management 
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-03-24 20:33:03 +09:00
tolelom
9a411e72da feat(asset): add voltex_asset crate with Handle, AssetStorage, and Assets manager 
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-03-24 20:29:55 +09:00
tolelom
ee22d3e62c docs: add Phase 3c asset manager implementation plan 
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-03-24 20:27:16 +09:00
tolelom
801ced197a feat: add hierarchy_demo with solar system scene graph 
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-03-24 20:23:59 +09:00
tolelom
c24c60d080 feat(ecs): add scene serialization/deserialization (.vscn format) 
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-03-24 20:21:11 +09:00
tolelom
135364ca6d feat(ecs): add WorldTransform propagation through parent-child hierarchy 
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-03-24 20:20:46 +09:00
tolelom
3e475c93dd feat(ecs): add Parent/Children hierarchy with add_child, remove_child, despawn_recursive 
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-03-24 20:19:28 +09:00
tolelom
504b7b4d6b docs: add Phase 3b scene graph implementation plan 
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-03-24 20:18:10 +09:00
tolelom
ecf876d249 fix(many_cubes): use dynamic uniform buffer for per-entity rendering 
Previous approach called write_buffer inside render pass which doesn't
work — GPU only sees the last value at submit time. Now pre-computes all
entity uniforms into a dynamic UBO and uses dynamic offsets per draw call.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-03-24 20:14:18 +09:00
tolelom
19e37f7f96 feat: add many_cubes ECS demo with 400 entities 
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-03-24 20:09:44 +09:00
tolelom
59753b2264 feat(ecs): add World with type-erased storage, queries, and Transform component 
Implements Task 3 (World: spawn/despawn, add/get/remove components, query/query2
with type-erased HashMap<TypeId, Box<dyn ComponentStorage>>) and Task 4 (Transform:
position/rotation/scale with matrix() building T*RotY*RotX*RotZ*S). 25 tests pass.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-03-24 20:07:17 +09:00
tolelom
2d64d226a2 feat(ecs): add voltex_ecs crate with Entity, EntityAllocator, and SparseSet 
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-03-24 20:05:15 +09:00
tolelom
96cebecc6d docs: add Phase 3a ECS implementation plan 
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-03-24 20:02:50 +09:00
tolelom
df06615de4 feat: add model viewer demo with OBJ loading, Blinn-Phong lighting, FPS camera 
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-03-24 19:56:28 +09:00
tolelom
71f6081dc9 feat(renderer): add BMP texture loader and GPU texture upload 
Implements parse_bmp (24/32-bit uncompressed BMP to RGBA), GpuTexture with
wgpu 28.0 write_texture API (TexelCopyTextureInfo/TexelCopyBufferLayout),
bind_group_layout, white_1x1 fallback, and 3 BMP parser unit tests.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-03-24 19:52:35 +09:00
tolelom
04ca5df062 feat(renderer): add Blinn-Phong shader, light uniforms, mesh pipeline 
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-03-24 19:50:51 +09:00
tolelom
ffd6d3786b feat(renderer): add Camera and FpsController 
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-03-24 19:49:23 +09:00
tolelom
c7d089d970 feat(renderer): implement OBJ parser with triangle/quad support 
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-03-24 19:49:23 +09:00
tolelom
78dcc30258 feat(renderer): add MeshVertex, Mesh, and depth buffer support 
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-03-24 19:47:59 +09:00
tolelom
82e3c19b53 feat(math): add Mat4 with transforms, look_at, perspective 
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-03-24 19:46:28 +09:00
tolelom
c644b784a6 feat(math): add Vec2 and Vec4 types 
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-03-24 19:45:28 +09:00
tolelom
870c412270 docs: add Phase 2 rendering basics implementation plan 
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-03-24 19:41:12 +09:00
tolelom
81ba6f7e5d feat: implement Phase 1 foundation - triangle rendering 
- voltex_math: Vec3 with arithmetic ops, dot, cross, length, normalize
- voltex_platform: VoltexWindow (winit wrapper), InputState (keyboard/mouse),
  GameTimer (fixed timestep + variable render loop)
- voltex_renderer: GpuContext (wgpu init), Vertex + buffer layout,
  WGSL shader, render pipeline
- triangle example: colored triangle with ESC to exit

All 13 tests passing. Window renders RGB triangle on dark background.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-03-24 19:34:39 +09:00