During ray tracing there is a missing resource. On OpenGL this doesn't
matter as it will reuse the previous binding. But on Metal or Vulkan
each resource needs to be added to update bindings.
Pull Request: https://projects.blender.org/blender/blender/pulls/123655
This is the root cause of broken updates
on local lights.
The same local frustum was used for all of the
tilemap (up to 6) of a light. This made the
`intersect(frustum, box)` call buggy which
would return true only if the object would
intersect with the first tilemap of the light.
This lead to improper updates when the object
would hit this path.
Fix#122533
This was caused by the tangent basis computation that
had a threshold that was too noticeable.
Increasing the threshold makes the artifact
unoticeable.
Fix#122949
This was caused by some pixels having no good neighbors
to get the irradiance from. The weighted sum would
have huge precision issues and the values would blow-out.
Adding an epsilon weight tailored to the report file
to fix this issue.
Fix#123488
Update the batch specializations compilation to allow using it in an
async way.
The implementation has 2 main limitations:
- Only one batch at a time can be processed, extra batches will be
added to a queue.
- Binding a specialization variant that is still being compiled will fail.
Pull Request: https://projects.blender.org/blender/blender/pulls/123015
EEVEE stores light probes using octahedral mapping. Compared to the previous
cubemap storage octahedral has less pixels. The 64x64 is becoming useless
and can be removed. This PR also enables generating light probe maps upto 4k.
Some issues were found: the offset of the sphere inside the atlas
was always set to mipmap level 0 offset. This was hidden because of the texture
wrapping. Also the offset was substracted from the local texture
coordinate when calculating the direction of the pixel. Might be that due
to the incorrect offset (mipmap level 0), the latter issue was never detected.
Pull Request: https://projects.blender.org/blender/blender/pulls/123074
The offset was only 0.5 which centered the gather
sample exactly on the first pixel of the quad.
With floating point arithmetic differences on Nvidia
this lead to the wrong set of texture pixel being
fetched by gather.
Using the coordinate at the center of the quad fixes
the issue.
Fix#123262
This was a missing block of the TAA implementation.
TAA jitter and reprojection have a tedency to soften
the texture. Add a 1.5 bias to make them a bit sharper.
Note that this is a bit different than the usual TAA
blurring. In final render we don't do reprojection
so it is only because the texture filter (box filter
from the LOD) is applied at the same time than our pixel
filter (blackmann-harris). It is less noticeable than
the normal TAA blur, but still blurs ~2px instead of
1.5px.
This implement the holdout flag by switching to
the holdout case in the shader. This has a few benefits:
- Doesn't recompile the shaders.
- Makes the object infos mandatory (already the case in
practice)
- Handle transparent materials properly, keeping the
transparency working.
Fix#123284
Pull Request: https://projects.blender.org/blender/blender/pulls/123315
This happened in the following render test:
`render/light/all_light_types_in_volume.blend`
Unfortunately it seems non-deterministic.
To fix this, we change the heuristic to jump
out of the shadow update loop. Also introduce
a upper bound to the number of iteration.
On top of this, add a flush for every loop
to avoid huge command buffer submission.
Thanks @pragma37 for the fix.
At high light count, this missing barriers would
produce invalid, non-unique `prefix_sum` indices.
This then resulted in some slots inside `out_light_buf`
never written to, leaving undefined data inside them.
If the buffer was cleared to zero, these undefined light
slots would be interpreted as sun lights and the
shadow setup compute pass would critically fail because
of out of bound memory.
Fix#123195
EEVEE Film accumulation workaround for Metal/Intel iGPUs.
On Metal the Intel iGPUs do not support image read write
on array textures. However this limitation doesn't show
any artifacts when using the compute shader.
This PR is a work around that uses the film_comp shader
to process the film samples, but uses a separate film_copy_frag
shader to read the result and copy them to the frame buffer.
I deliberately didn't include the fix to the film_frag shader
as that would change the read/write resources and could lead
to performance issues for other platforms. Writable resources
are typically slower compared to read only resources.
Some code needed to be duplicated (and not added to `*_lib.glsl`)
as compilers would still raise compilation errors due to imageStore/Load
on incompatible resource access.
The Metal/Intel iGPU is also marked to have limited support as
raytracing and probes still produces big artifacts.
This workaround can be tested on any platform just by setting
`use_compute_ = true` in `Film::sync`
Related to #122361
Pull Request: https://projects.blender.org/blender/blender/pulls/123330
The previous code was using matrix multiplication to
get the local thickness to world thickness.
The correct way is to multiply the local thickness
by the scale of the object (length of each columns
of the object_to_world matrix).
When using particle system the generated coordinates where not set.
The reason is that a loose resource handle was created for particle
system that didn't contain enough information to calculate orcos.
This PR will create the object info from its parent object.
Pull Request: https://projects.blender.org/blender/blender/pulls/123307
This bias was added when the pixel radius estimation
computation was still broken. This resulted in a shadow
bias way too big in general.
Also fix shadow pixel size being clampped to the wrong
LOD level.
Fix#123295
EEVEE has a transparent render pass that renders materials where
the render mode is set to blended. This was introduced when EEVEE-Next
was still in development, but was never fully backported.
This PR adds the missing pieces.
Pull Request: https://projects.blender.org/blender/blender/pulls/123298
Do this by:
- Removing depth and depth test.
- Scale the sphere to the covered pixels size.
- Use infinite orthographic matrix
We can still improve this by scaling the sphere
bigger depending on the accuracy at its position.
Fix#123165
The threshold is way too high as the light power gets very small.
It still make sense to include the power here because
some lights might be disabled for some BSDF types, and
skipping the LTC eval code can be beneficial.
So reducing the threshold to very low value near FLT_MIN
to fix the issue.
Fix#123193
These two lights have a second culling pass that
uses some shapes defined in view space.
These shapes need to have their handedness flipped
otherwise the test fails.
Fix#122614
This could happen for non manifold meshes (like a water plane)
when using the accurate method.
If last hit in the volume ray is a frontface, we now consider
everything behind it in volume.
I didn't think the BMesh extraction mode could arrive at the case where
only loose edges are requested, but turns out it can because of the
mesh wrapper system where the evaluated mesh is actually a BMesh with
deformed positions.
The bloom render pass has been deprecated in Blender 4.2. It was still
visible in the UI in the shading popover and available in the python API.
This PR removes the UI option and deprecated the parts of the python API.
Current add-ons that use this API should still be able to use the API, but
it would not do anything. Add-ons are encourage to remove these calls.
The flags are not cleaned up so they should still work when switching back
to previous Blender versions.
Release notes have been updated to include these changes.
Pull Request: https://projects.blender.org/blender/blender/pulls/123059
