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This revisit the render pipeline to support time slicing for better motion
blur.
We support accumulation with or without the Post-process motion blur.
If using the post-process, we reuse last step next motion data to avoid
another scene reevaluation.
This also adds support for hair motion blur which is handled in a similar
way as mesh motion blur.
The total number of samples is distributed evenly accross all timesteps to
avoid sampling weighting issues. For this reason, the sample count is
(internally) rounded up to the next multiple of the step count.
Only FX Motion BLur: {F8632258}
FX Motion Blur + 4 time steps: {F8632260}
FX Motion Blur + 32 time steps: {F8632261}
Reviewed By: jbakker
Differential Revision: https://developer.blender.org/D8079
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These are the modifications:
-With DRW modification we reduce the number of passes we need to populate.
-Rename passes for consistent naming.
-Reduce complexity in code compilation
-Cleanup how renderpass accumulation passes are setup, using pass instances.
-Make sculpt mode compatible with shadows
-Make hair passes compatible with SSS
-Error shader and lookdev materials now use standalone materials.
-Support default shader (world and material) using a default nodetree internally.
-Change BLEND_CLIP to be emulated by gpu nodetree. Making less shader variations.
-Use BLI_memblock for cache memory allocation.
-Renderpasses are handled by switching a UBO ref bind.
One major hack in this patch is the use of modified pointer as ghash keys.
This rely on the assumption that the keys will never overlap because the
number of options per key will never be bigger than the pointed struct.
The use of one single nodetree to support default material is also a bit hacky
since it won't support concurent usage of this nodetree.
(see EEVEE_shader_default_surface_nodetree)
Another change is that objects with shader errors now appear solid magenta instead
of shaded magenta. This is only because of code reuse purpose but could be changed
if really needed.
Reviewed By: jbakker
Differential Revision: https://developer.blender.org/D7642
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This also fix it the volume velocity needles.
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The files are now split up into the following sections:
- `BKE_anim_path.h` and `anim_path.c` for path/curve functions.
- `BKE_anim_visualization.h` and `anim_visualizationanim_path.c` for
animation visualization (mostly motion paths).
- `BKE_duplilist.h` for DupliList function declarations. These were
already implemented in `object_dupli.c`, so they were rather out of
place being declared in `BKE_anim.h` in the first place.
No functional changes.
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This patch adds support for alpha hash for hair rendering in EEvee. Here's a comparison of with alpha hashing:
{F7588610}
And no alpha hashing:
{F7588615}
Note that this needs "soft shadows" enabled, otherwise shadows will be noisy; here's a render with soft shadows disabled:
{F7588621}
Reviewed By: fclem
Differential Revision: https://developer.blender.org/D5221
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Only the volume drawing part is really finished and exposed to the user. Hair
plugs into the existing hair rendering code and is fairly straightforward. The
pointcloud drawing is a hack using overlays rather than Eevee and workbench.
The most tricky part for volume rendering is the case where each volume grid
has a different transform, which requires an additional matrix in the shader
and non-trivial logic in Eevee volume drawing. In the common case were all the
transforms match we don't use the additional per-grid matrix in the shader.
Ref T73201, T68981
Differential Revision: https://developer.blender.org/D6955
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This patch is (almost) a complete rewrite of workbench engine.
The features remain unchanged but the code quality is greatly improved.
Hair shading is brighter but also more correct.
This also introduce the concept of `DRWShaderLibrary` to make a simple
include system inside the GLSL files.
Differential Revision: https://developer.blender.org/D7060
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This was caused by a double free of the instance data. Remove the need
of the instance data fix the issue.
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Reviewers: brecht
Differential Revision: D4997
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This reverts commit ce34a6b0d727bbde6ae373afa8ec6c42bc8980ce.
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Reviewers: brecht
Differential Revision: D4997
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When the result isn't used, prefer post increment/decrement
(already used nearly everywhere in Blender).
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T68035 by @luzpaz
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This cleans up a bit of duplicated code and some confusion about
what was culled and what wasn't.
Now everything is culled based on the given object pointer.
If the object pointer is NULL there is no culling performed.
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This removes:
- DRW_STATE_TRANS_FEEDBACK
- DRW_STATE_WIRE
- DRW_STATE_POINT
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Apply clang format as proposed in T53211.
For details on usage and instructions for migrating branches
without conflicts, see:
https://wiki.blender.org/wiki/Tools/ClangFormat
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This was making Autumn being half naked.
Issue was introduced by rBe72dc667c4d3
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Most API's already use this convention.
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This is still is a dirty workaround.
Note that we are drawing the whole sets of point multiple times. While this
is ineficient, the main bottleneck is CPU transformation.
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Workaround to tranform feedback not working on mac.
On some system it crashes (see T58489) and on some other it outputs
garbage (see T60171).
So instead of using transform feedback we render to a texture,
readback the result to system memory and reupload as VBO data.
It is really not ideal performance wise, but it is the simplest
and the most local workaround that still uses the power of the GPU.
This should fix T59426, T60171 and T58489.
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While \file doesn't need an argument, it can't have another doxy
command after it.
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Move \ingroup onto same line to be more compact and
make it clear the file is in the group.
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BF-admins agree to remove header information that isn't useful,
to reduce noise.
- BEGIN/END license blocks
Developers should add non license comments as separate comment blocks.
No need for separator text.
- Contributors
This is often invalid, outdated or misleading
especially when splitting files.
It's more useful to git-blame to find out who has developed the code.
See P901 for script to perform these edits.
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Fix T55355 Instanced hair not working well for EEVEE and workbench
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Current implementation works with at most of 3 layers, but was not
checked during hair drawing leading to reading from uninitialized
memory.
This commit limits it to the number of layers that is used during
compilation of blender.
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Instead of relying on the engine integration which is redundant.
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Also use 'uint'.
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This new system use transform feedback to compute subdivided hair points
position. For now no smoothing is done between input points.
This new system decouple the strands data (uv, mcol) with the points
position, requiring less update work if only simulation is running.
In the future, we can have compute shader do the work of the feedback
transform pass since it's really what it's meant to. Also we could generate
the child particles during this pass, releasing some CPU time.
draw_hair.c has been created to handle all of the Shading group creations
as well as subdivision shaders.
We store one final batch per settings combination because multiple viewport
or render could use the same particle system with a different subdivision
count or hair shape type.
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