demo.git - Vide-coded 64k demo system

Age	Commit message (Collapse)	Author
30 hours	refactor: Move platform files to src/platform/ subdirectory	skal
	Reorganized platform windowing code into dedicated subdirectory for better organization and consistency with other subsystems (audio/, gpu/, 3d/). Changes: - Created src/platform/ directory - Moved src/platform.{h,cc} → src/platform/platform.{h,cc} - Updated 11 include paths: "platform.h" → "platform/platform.h" - src/main.cc, src/test_demo.cc - src/gpu/gpu.{h,cc} - src/platform/platform.cc (self-include) - 6 test files - Updated CMakeLists.txt PLATFORM_SOURCES variable Verification: ✓ All targets build successfully (demo64k, test_demo, test_platform) ✓ test_platform passes (70% coverage maintained) ✓ demo64k smoke test passed This completes the platform code reorganization side quest. No functional changes, purely organizational.
2 days	fix(shaders): Resolve WGSL validation errors and add shader compilation tests	skal
	Fixed three critical WGSL shader issues causing demo64k and test_3d_render to crash: 1. renderer_3d.wgsl: Removed dead code using non-existent `inverse()` function - WGSL doesn't have `inverse()` for matrices - Dead code was unreachable but still validated by shader compiler - Also removed reference to undefined `in.normal` vertex input 2. sdf_utils.wgsl & lighting.wgsl: Fixed `get_normal_basic()` signature mismatch - Changed parameter from `obj_type: f32` to `obj_params: vec4<f32>` - Now correctly matches `get_dist()` function signature 3. scene_query_linear.wgsl: Fixed incorrect BVH binding declaration - Linear mode was incorrectly declaring binding 2 (BVH buffer) - Replaced BVH traversal with simple linear object loop - Root cause: Both BVH and Linear shaders were identical (copy-paste error) Added comprehensive shader compilation test (test_shader_compilation.cc): - Tests all production shaders compile successfully through WebGPU - Validates both BVH and Linear composition modes - Catches WGSL syntax errors, binding mismatches, and type errors - Would have caught all three bugs fixed in this commit Why tests didn't catch this: - Existing test_shader_assets only checked for keywords, not compilation - No test actually created WebGPU shader modules from composed code - New test fills this gap with real GPU validation Results: - demo64k runs without WebGPU errors - test_3d_render no longer crashes - All 22/23 tests pass (FftTest unrelated issue from FFT Phase 1) Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>