Instancing Performance Improvements #92963

New Issue

Jacques Lucke · 2021-11-09T17:11:05+01:00

Jacques Lucke commented

2021-11-09 17:11:05 +01:00

Performance of instances in the viewport is much worse than is should be. This task is mean to keep track of possible improvements.

Use a vector or similar data structure instead of an linked list for storing an objects instances.
Don't recompute an object's instance list on every redraw.
Store bounding box in geometry so that it is not recomputed for every geometry instance (#96968).
Remove the nested instance limit, avoiding the need to realize instances in some cases
Support passing many instances of the same to the render engine at once to reduce per-instance overhead.

Performance of instances in the viewport is much worse than is should be. This task is mean to keep track of possible improvements. - [ ] Use a vector or similar data structure instead of an linked list for storing an objects instances. - [ ] Don't recompute an object's instance list on every redraw. - [x] Store bounding box in geometry so that it is not recomputed for every geometry instance (#96968). - [ ] Remove the nested instance limit, avoiding the need to realize instances in some cases - [ ] Support passing many instances of the same to the render engine at once to reduce per-instance overhead.

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blender-admin commented

2021-11-09 17:11:05 +01:00

#97398 was marked as duplicate of this issue

blender-admin commented

2021-11-09 17:11:05 +01:00

#92862 was marked as duplicate of this issue

blender-admin commented

2021-11-09 17:11:05 +01:00

#93645 was marked as duplicate of this issue

blender-admin commented

2021-11-09 17:11:05 +01:00

#92859 was marked as duplicate of this issue

Hans Goudey changed title from ~~Instancing Improvements~~ to Instancing Performance Improvements

2021-11-23 17:34:40 +01:00

Valera Barashkov commented

2022-03-15 18:55:13 +01:00

For example, instancing a pine forest:

Pine needles instanced on a branch, branch instanced on another branch, x4 - 6 times, final branch instanced on the tree trunk. Then the whole tree is instanced on a terrain with randomized scale and rotation. Currently, performance and memory is magnitudes better if a twig is a realized object (so the needles and 2-4 levels of branching) before instancing on the main branches.

For example, instancing a pine forest: Pine needles instanced on a branch, branch instanced on another branch, x4 - 6 times, final branch instanced on the tree trunk. Then the whole tree is instanced on a terrain with randomized scale and rotation. Currently, performance and memory is magnitudes better if a twig is a realized object (so the needles and 2-4 levels of branching) before instancing on the main branches.

blender-admin commented

2022-11-15 20:46:55 +01:00

This issue was referenced by e8f4010611

This issue was referenced by e8f4010611e76e0b88cd8a706b630ad843c09941

Hans Goudey referenced this issue

2023-02-27 20:25:33 +01:00

Object data bounds improvements proposal #96968

Marek Smoliński referenced this issue

2023-07-05 12:00:20 +02:00

Realized instances render considerably faster in Solid View #109731

Hans Goudey referenced this issue

2023-07-06 22:23:56 +02:00