Threedim::GaussianSplatData Struct Reference

Detailed Description

Raw Gaussian Splat data loaded from a PLY file.

Each splat is stored as 64 floats (256 bytes), laid out for direct GPU upload:

Offset (floats) Content ────────────────────────────────────── 0 .. 2 position (x, y, z) 3 .. 5 normal (nx, ny, nz) 6 .. 8 SH DC coefficients (f_dc_0, f_dc_1, f_dc_2) 9 .. 53 SH rest coefficients (f_rest_0 .. f_rest_44) 54 opacity (pre-sigmoid) 55 .. 57 scale (log-space: scale_0, scale_1, scale_2) 58 .. 61 rotation quaternion (rot_0=w, rot_1=x, rot_2=y, rot_3=z) 62 .. 63 padding (zeros)

A compute shader is expected to convert this to the compact rendering format.

Public Attributes
float_vec	buffer
uint32_t	splatCount {}
uint32_t	shRestCount {}

Static Public Attributes
static constexpr uint32_t	floatsPerSplat = 64
static constexpr uint32_t	bytesPerSplat = floatsPerSplat * sizeof(float)
static constexpr uint32_t	maxSHRestCoeffs = 45

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The documentation for this struct was generated from the following file:

• Ply.hpp