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This was caused by the material grouping system which was missing
a per material uniform update in the opaque case.
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This was caused by the SSR option resetting the accumulation. But the
render passes were only cleared in the init phase. This means that
when SSR was resetting the taa_render_sample the actual renderpasses
would still contains 1 sample. This means the renderpasses were always
divided by the wrong number of samples.
The fix is to clear just before accumulation if the sample is 1.
The fact that it works for motion blur is kind of a blessing. This is
because we check stl->effects->ssr_was_valid_double_buffer before
resetting the sampling. So this only happens on the first motion step
and does not affect the rest of the rendering.
Reviewed by: jbakker
Differential Revision: https://developer.blender.org/D11033
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This was caused by the new depsgraph persistence.
The GPUbatches we got from the cache being the same for each frame
means that we need to be more careful about cleanning the additional
VBOs references.
Moving the `EEVEE_motion_blur_swap_data` function call at the end of
the loop makes sure the references are cleaned.
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In cases where the same node tree is used in different materials with
small changes, the wrong material could be selected.
Cause: Hair shaders GPU resources weren't updated and used the previous bound data.
Reviewed By: fclem
Differential Revision: https://developer.blender.org/D11036
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This was caused by the closure refactor. The radiance being masked
for SSR, we need to not enable SSR when trying to render the specular
color pass.
Reviewed By: jbakker
Differential Revision: https://developer.blender.org/D11028
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The `filtered_radiance` is not a texture form the texture pool.
It needs manual freeing if not used.
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This was caused by some sort of degenerated normals.
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It seems the pow result is unstable on some implementations.
Also avoid undefined behavior by clamping aoFactor to strict positive values.
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The problem was that you could getting write access to a grid from a
`const Volume *` without breaking const correctness. I encountered this
when working on support for volumes in the bounding box node. For
geometry nodes there is an important distinction between getting data
"for read" and "for write", with the former returning a `const` version
of the data.
Also, for volumes it was necessary to cast away const, since all of
the relevant functions in `volume.cc` didn't have const versions. This
patch adds `const` in these places, distinguising between "for read"
and "for write" versions of functions where necessary.
The downside is that loading and unloading in the global volume cache
needs const write-access to some member variables. I see that as an
inherent problem that comes up with caching that never has a beautiful
solution anyway.
Some of the const-ness could probably be propogated futher in EEVEE
code, but I'll leave that out, since there is another level of caching.
Differential Revision: https://developer.blender.org/D10916
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Use same implementation as Cycles. Is also a bit faster.
Should also fix T86578 at the same time.
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Minor manual tweak to prevent wrapping an array into columns.
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Define visibility error to be 1 by default to avoid undefined behaviour.
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The new clamping works by modifying the lamp internal radius which
then soften the light contribution.
However this does remove more light compare to the old solution.
This is because the clamp now affects the light over a much larger
distance since it is smoother. Old scene needs manual tweaking.
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Soft surface shadows were already supported but now we support
soft shadows of the volume themselves.
This is only enabled if the light casts shadow and the scene soft
shadows toggle is enabled.
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Previously area lights were just considered as point lights.
We now use a "most representative point" technique that make the
light shape appearant and gives more homogenous result.
This technique is quite cheap but it is not physically correct.
So I came up with a power function to have almost the same intensity
output as cycles in the general case.
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This makes volume lights more efficient if they have lower power.
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Sun lights are treated as distant light source and need to gather
shadowing from the full frustum.
This might have performance impact on certain scenes.
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This adds 2 new sliders for light objects that modulates the diffuse
light and the volume light intensities.
This also changes the way volume light is computed using point lamp
representation. We use "Point Light Attenuation Without Singularity"
from Cem Yuksel instead of the usual inverse square law.
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Caused by recent change for contact shadow raytracing. rB4e236326c137
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This is because the refractive materials were using the deferred AO
computation instead of tracing their own.
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This was cause by the change of some epsilon values for reflections.
This commit changes the planar reflection tracing to have correct
handling of parallel rays and discard any self intersection with normal
screen raytrace.
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Accumulate error caused by the low amount of integration slices and
correct it for the low roughness surfaces.
This increases light leak but it is less distracting than dark fringe
everywhere.
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It is more straightforward to understand and is define in common file.
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The shader was not using the horizon texture and was trying to
trace the AO again.
Also the depth reconstruction was off because now using the maxzBuffer.
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This shader is of no use now that we the fullres hizbuffer.
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Use the maxzbuffer to get the correct depth information.
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This happens when the normal is too much deformed to give valid
reflection even after ensure_valid_reflection.
Cycles seems to not handle this case either so we just discard the
rays.
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Simple divide by 0 error. The input radius was assumed to be safe
but is not when the user can scale it arbitrarly.
This also move the division out of the loop.
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This fixes NaNs / blown up values when using alpha-hashed transparency
or alpha clip with SSS.
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We now reuse 9 hitpoints from the neighboorhood using a blue noise
sample distribution as mentionned in the reference presentation.
Reusing more rays does however make some area a bit more blury.
The resulting noise is quite lower compared to previous implementation
which was only reusing 4 hits.
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This avoids going through geometry when ray have certain angle.
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This make sure the rays are generated randomly from a fullres
texel center.
This creates more noise but increase the convergence when doing
half res tracing.
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This split is to make code easier to manage and rename the files to
`effect_reflection_*` to avoid confusion.
Also this cleans up a bit of the branching mess in the trace shader.
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This makes the hit delta threshold dependant on the ray angle.
If the ray is more aligned with the view, its intersection
threshold gets bigger to avoid going through geometry.
This improves reflections and fix T86448 refraction issue.
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This was cause by a division by 0 if the ray direction had no
depth difference. Adding a small epsilon fix the issue.
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We now have a new buffer to output reflection depth. This buffer is
only usefull for non planar SSR but we use it to tag the planar rays.
This also touch the raytrace algo for planars to avoid degenerate
lines on vert sharp reflections.
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This changes the sampling routine to use the method described in
"A Simpler and Exact Sampling Routine for the GGXDistribution of Visible Normals"
by Eric Heitz.
http://jcgt.org/published/0007/04/01/slides.pdf
This avoids generating bad rays and thus improve noise level in screen-
space reflections / refraction.
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This changes the hitBuffer to store `ReflectionDir * HitTime, invPdf`
just as the reference presentation.
This avoids issues when the hit refinement produce a coordinate that
does not land on the correct surface.
We now store the pdf in the same texture and store it inversed so we can
remove some ALU from the resolve shader.
This also rewrite the resolve shader to not be vectorized to improve
readability and scalability.
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