Age | Commit message (Collapse) | Author |
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The new implementation leverage compute shaders to reduce the
number of passes and complexity.
The max blur amount is now detected automatically, replacing the property
in the render panel by a simple checkbox.
The dilation algorithm has also been rewritten from scratch into a 1 pass
algorithm that does the dilation more efficiently and more precisely.
Some differences with the old implementation can be observed in areas with
complex motion.
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The improvements over the old implementation are:
- Improved history reprojection filter (catmull-rom)
- Use proper velocity for history reprojection.
- History clipping is now done in YCoCg color space using better algorithm.
- Velocity is dilated to keep correct edge anti-aliasing on moving objects.
As a result, the 3x3 blocks that made the image smoother in the previous
implementation are no longer visible is replaced by correct antialiasing.
This removes the velocity resolve pass in order to reduce the bandwidth
usage. The velocities are just resolved as they are loadded in the film
pass.
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This module allow tracking of object and geometry data accross time.
This commit adds no user visible changes.
It work in both viewport (*) and render mode, gives correct motion
for any camera projection type and is compatible with displacement (**).
It is a huge improvement upon the old EEVEE velocity which was only used
for motion blur and only available in render.
It is also an improvement for speed as the animated objects do not need to
be rendered a 3rd time. The code is also much cleaner: no GPUVertBuf
duplication, no GPUBatch amendment, no special cases for different geometry
types, no DRWShadingGroup per object, no double buffering of velocity.
The module is still work in progress as the final output may still be
flawed.
(*): Viewport support is already working but there might be some cases where
mapping will fail. For instance if topology changes but not vertex count.
(**): Displacement does not contribute to motion vectors. Surfaces using
displacement will have the same motion vectors as if they were not displaced.
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