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d7e69f97ca
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Phase 3: PS-based texture blending with winner-takes-all heightmap
Replace pre-encoded quad blend data (v1) with per-pixel voxel data
lookups in the pixel shader. The PS reads voxelDataBuffer (SRV t3)
to find neighbor materials dynamically, enabling 2 independent blend
axes, stair-priority neighbor detection, and winner-takes-all
heightmap-driven transitions.
Key design decisions validated through 6 iterations (see
blending_experiments.md):
- Winner-takes-all: material with highest heightmap score wins 100%
(sharp but organic transitions, not smooth gradient)
- Symmetric bias: bias = 0.5 - weight ensures equal chance at border
- Subtractive corner attenuation (param=0.80): xAdj = xEdge -
saturate(yEdge - 0.80) reduces blend at corners naturally
- Blend zone = 0.25 voxels from each edge (50% of face)
- Debug mode (F4) visualizes blend zones as colors
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2026-03-26 12:14:08 +01:00 |
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