Reshape a TALL EXR — a vertical stack of sliceHeight-row slices (e.g. a Godot
lightmap atlas exported as 512 × 512·N) — into an rgba16float 2D ARRAY texture
of N layers. The tall 2D form would exceed maxTextureDimension2D (8192); the
stacked scanline data maps 1:1 onto the array layers via rowsPerImage.
Reshape a TALL EXR — a vertical stack of
sliceHeight-row slices (e.g. a Godot lightmap atlas exported as 512 × 512·N) — into anrgba16float2D ARRAY texture of N layers. The tall 2D form would exceedmaxTextureDimension2D(8192); the stacked scanline data maps 1:1 onto the array layers viarowsPerImage.