asc_camblur

ASCENSION's shutter: camera-velocity motion blur reconstructed from depth.

Each pixel's world position comes from @scene.depth against this frame's inverse view-projection; re-projecting it through the previous frame's camera gives the screen-space distance that surface travelled in one frame. Scaled by the shutter fraction, that is the exposure's smear, and colour is averaged along it.

It consumes no velocity buffer. @scene.motion carries zero for opaque geometry on the deferred path, so the shipping per-object reconstruction filter has nothing to read; reconstruction from depth is exact for camera motion, which is the only motion the aspect brief asks this pass to carry.

Bindings

name	kind
scene_color	texture2d
scene_depth	texture_depth
frame_cam	buffer — @frame.camera
prev_cam	buffer — asc_prev_cam, last frame's @frame.camera
lens_params	buffer — asc_lens_params
blur_out	storage2d (rgba8)