Point shader family for the TSL ↔ GLSL parity harness: the visual
point-sprite variants (falloff sweep, gamma fast path, max-mode
premultiply, volumetric emission–absorption, colormap LUT,
perspective sizing, subpixel floor, near fade, behind-camera guard,
sorted-index permutation) plus the point-pick counterparts.
18 registry entries (incl. the multi-row texture-orientation variant).
Point shader family for the TSL ↔ GLSL parity harness: the visual point-sprite variants (falloff sweep, gamma fast path, max-mode premultiply, volumetric emission–absorption, colormap LUT, perspective sizing, subpixel floor, near fade, behind-camera guard, sorted-index permutation) plus the point-pick counterparts. 18 registry entries (incl. the multi-row texture-orientation variant).