One 1024px² octahedral probe (according to the GPU mem stats):
- RGBA16F = 17Mb
- RGB_11_11_10 = 4Mb
For the time being I prefer to maximize the number of probe possible in the scene for users to test.
This is obviously a temporary solution and the final choice of cubemap format should be exposed to the user.
After using it for like 30 sec, the min max bound box is absolutely not practical. Reverting into using a unit cube with object transform.
This also simplify the code.
In the future of center probes will be implemented using another object matrix (via an object pointer).
We still do it a few times, but that helps already. Related to T51718.
Note that it also reinforces the idea that any geometry datablock will
have a generated copy-on-write Mesh provided by Depsgraph.
Use indirect access to it via object.
It was already flushing from base to object, now we can avoid such flushing.
Still weird to have selection color filled in by dependency graph, but now
there is no synchronization going on at least.
This is supposed to help catch bugs if referrencing stack data out of
the draw loop context.
No change is suppose to happen for users (specially because the changes
here happens mostly on debug).
It includes a change in the logic for render loop, to make sure DST is
not accessed before we enter it - contribution by Campbell Barton.
We only show object center if object is selected, active or if viewport
has the "All Object Origins" options.
The viewport display options can migrate to renderlayer options.
However, we can mimic 2.7x as a compromise while the final design is
finalized.
Replace completly random noise by Blue noisen, giving a better aspect.
Also randomize the distance in the sample direction to cover the whole distance even with 1 sample. Using another blue noise for this.
Replace spiral samples (that had tendency to align if the number of samples was near the chosen constant) with Hammersley samples that have good coverage even for low number of samples.
Use a UBO instead of Texture (a bit less latency) making things a tiny bit faster.
Move the noise data to the SceneLayerData, because each render layer can have a different sample count.
Separate material handling inside another file.
Make use of enums to identify shader variations.
Group all 64*64 LUTs into one array texture.
Only update world probe if world changes.
Now dupli groups, objects, particles, ... are all working.
This introduces a flag for the iterator to determine whether we go over
Set and dupli objects or not.
Important to remember to keep the iteration of DEG_ as readonly.
Cycles is not working well for dupli groups, and it's memleaking
for dupli particles. So for now we iterate over main objects and set
only, not dupli.
To change that go in rna_scene.c and:
-DEG_OBJECT_ITER(graph, ob, DEG_OBJECT_ITER_FLAG_SET)
+DEG_OBJECT_ITER(graph, ob, DEG_OBJECT_ITER_FLAG_ALL)
Review and suggestions by Sergey Sharybin
This enables us to use 2D texture arrays for multiple probes.
There is a little artifact with very high roughness caused elongated pixel due to the projection (along every 90° meridian).
