demo.git - Vide-coded 64k demo system

Age	Commit message (Collapse)	Author
13 hours	fix(shader): add dfWithID to sdf_test.wgsl for test compatibility	skal
	SDFTestEffect was failing with undefined dfWithID error. The raymarching.wgsl include requires dfWithID even for single-pass effects. Added dummy implementation that wraps df() for compatibility. Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
27 hours	feat(gpu): add SDF camera infrastructure and effect base class	skal
	Add unified camera system for SDF raymarching effects: - CameraParams struct (80 bytes): inv_view matrix + FOV/near/far/aspect - SDFEffect base class: manages camera uniform, provides update_camera() helpers - camera_common.wgsl: getCameraRay(), position/forward/up/right extractors - SDFTestEffect: working example with orbiting camera + animated sphere Refactor effect headers: - Extract class definitions from demo_effects.h to individual .h files - Update includes in .cc files to use specific headers - Cleaner compilation dependencies, faster incremental builds Documentation: - Add SDF_EFFECT_GUIDE.md with complete workflow - Update ARCHITECTURE.md, UNIFORM_BUFFER_GUIDELINES.md - Update EFFECT_WORKFLOW.md, CONTRIBUTING.md Tests: 34/34 passing, SDFTestEffect validated Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>