Fragment shader for standard Gaussian splat rendering.
Uses the 2D Cholesky factor passed from vertex shader to compute
Mahalanobis distance, then applies shifted Gaussian falloff.
The picking system uses a different fragment shader (see picking/gsplat/shaders.ts).
Fragment shader for standard Gaussian splat rendering.
Uses the 2D Cholesky factor passed from vertex shader to compute Mahalanobis distance, then applies shifted Gaussian falloff. The picking system uses a different fragment shader (see picking/gsplat/shaders.ts).