Wonderbox-inspired lighting overhaul across all 3 pixel shaders:
- Hemisphere ambient (sky blue above, warm brown below) replaces flat ambient
- RT shadows lerp toward blue-violet tint instead of plain darkening (factor 0.55)
- Rim light (fresnel) with warm golden color on silhouettes (30% on vegetation)
- Soft exponential tone mapping + saturation boost in final post-process pass
- CB parameters for all lighting values (skyAmbient, groundAmbient, shadowTint, etc.)
- Fog color/density centralized from CB instead of hardcoded per-shader
- Screenshot mode (CLI "screenshot"): fixed camera, AO convergence, auto-capture
- AO noise stability: world-space hash using voxel center + tangent-axis frac position
- AO distance-weighted falloff: continuous occlusion values instead of binary hit/miss
- Normal render target (R16G16B16A16_SNORM) as MRT SV_TARGET1 in all 3 pixel
shaders (voxelPS, voxelTopingPS, voxelSmoothPS) for future RT shadow/AO
- BLAS extraction compute shader (voxelBLASExtractCS.hlsl): converts PackedQuad
StructuredBuffer to float3 position buffer for DXR BLAS input
- Blocky BLAS: single BLAS from all GPU-meshed quads (~1.5M triangles)
- Smooth BLAS: single BLAS from smooth vertex buffer directly
- TLAS: 2 instances (blocky + smooth), identity transforms, CreateBuffer2 with
callback to avoid UpdateBuffer on RAY_TRACING flagged buffers
- Fix: Wicked always accesses index_buffer in CreateRaytracingAccelerationStructure
via to_internal() even for non-indexed geometry — provide dummy valid buffer
Implement CPU-side Naive Surface Nets for smooth voxel surfaces (SmoothStone,
Snow) coexisting with blocky voxels (Grass, Dirt, Stone, Sand).
Key features:
- SmoothMesher with binary SDF, centroid vertex placement, per-axis boundary
clamping to align with blocky grid at smooth↔blocky transitions
- Cross-chunk connectivity: PAD=2 SDF grid, vertex range [-1, CHUNK_SIZE),
canonical edge ownership (no duplicate triangles, no z-fighting)
- Face normals oriented by edge axis+sign (robust with binary SDF, unlike
SDF gradient dot or centroid sampling approaches)
- Y-axis winding fix: sharing cells have different spatial arrangement,
requiring opposite winding from X and Z axes
- GPU mesher treats smooth neighbors as solid (no blocky faces toward smooth)
- Material blending: primary (smooth-only) + secondary (all counts) per vertex
- Dedicated shaders: voxelSmoothVS (vertex pulling t6) + voxelSmoothPS
(triplanar + lerp blending between two materials)
- Separate render pass with LoadOp::LOAD after voxels+topings
- New materials: SmoothStone (mat 6), blocky Stone (mat 3) and Dirt patches
added to world generation for boundary testing
- Add bleedMask/resistBleedMask bitmasks to CB for per-material blend control
- Grass: canBleed + resistsBleed (bleeds onto others, nothing bleeds onto it)
- Stone: no bleed (doesn't overflow, but accepts bleed from others)
- Other materials: normal bidirectional blending
- PS checks flags before blending: mainResists → skip, !neighCanBleed → skip
- Flatten terrain (heightScale 64→20) for better surface visibility
- Replace altitude-based material bands with noise-based 2D patches
(3 noise channels create organic patches of all 5 materials on surface)
- Make stone/sand more visually distinct (stone=blue-gray, sand=warm yellow)
- Lower stone heightContrast (1.2→0.5) so neighbors bleed onto it more
Mega-buffer architecture replacing per-chunk GPU buffers:
- Single StructuredBuffer<PackedQuad> for all chunks (2M quads, 16 MB)
- StructuredBuffer<GPUChunkInfo> with per-chunk metadata (position, quad offsets, face groups)
- VS reads chunk info via push constants (b999) for driver-safe chunk indexing
- CPU frustum culling with wi::primitive::Frustum + AABB per chunk
- Quads sorted by face direction in greedy mesher (faceOffsets/faceCounts)
- GPU frustum + backface cull compute shader (voxelCullCS.hlsl)
- GPU binary mesher compute shader baseline (voxelMeshCS.hlsl)
- Indirect draw buffers and timestamp query infrastructure
- README with build instructions and project architecture
