Encountered on Nvidia + Linux, it seems that doing everything all at once
can make the driver give up the whole command list and return nothing as
the output of the render.
Now by default the UVs are calculated with a fixed size and this makes easier to add patterns for drawings like Manga. Before, the texture changed depending of the stroke size.
The appearance is a bit different than 2.79 where the flame was just added
on top of the smoke without correct blending.
Now it's much more realistic and using volumetric integration. You can see
the smoke actually masking the flame.
The other difference is that the flame color was not using proper color
managed blending. Now with the use of filmic it shows bright yellow.
This could be adjusted and displayed as a user parameter in the future.
Includes the following fixes
- Fix smoke texture creation: data was interpreted as Byte instead of Floats.
- Fix Velocity texture not being free after draw: also was causing crashes.
- Fix display_thickness not being copied during COW.
- Fix Blending and general volume rendering algorithm.
- Add Volume Shadowing support.
Add an option to display contour lines tracing through points with the
same interpolated weight value in weight paint mode. This can be useful
for working on gentle gradients over a relatively high resolution mesh,
where the difference in color between adjacent vertices is very small.
The contour grid has 3 levels of detail going down to step 0.001,
which automatically fade in or out based on the weight gradient.
Fade out works by capping both screen space and weight space line
width, and reducing alpha when the screen space width becomes too
small for moire and noise-less rendering.
Reviewers: fclem
Differential Revision: https://developer.blender.org/D3749
Both original handle types are based on location, and Absolute uses it
in a weird way: the Start handle uses the head, while End uses the tail.
This makes controlling the shape of the B-Bone via control bone rotation
really non-intuitive, especially if trying to add a single control for
the tangent in the middle of a B-Bone chain.
To remedy this, add a new custom handle type that uses the orientation
of the control bone, while completely ignoring location. It is even
possible to control both ends of one B-Bone with the same handle bone,
resulting in an S shape.
Reviewers: brecht
Differential Revision: https://developer.blender.org/D3769
Specifically, it should always use the position of the custom handle
bone head, even when affecting the handle at the tail of the main bone,
and shouldn't apply the special handling for joining two B-Bones.
This handle type was unusably broken before a bug fix included in
recent changes, so it should be safe to break backward compatibility.
The grid now can be configured by object because this helps to identify objects and allows to define diferent grid parameters for each objects.
Also added a color option.
The rest shape of B-Bones is actually affected by custom handles or
the default connected parent/child mechanism. Ignoring these effects
thus leads to the edit mode shape being different from the actual
rest pose.
This splits the b_bone_spline_setup function that is used to compute
the correct rest and pose shape from pose channels into two parts,
and applies the data structure independent half to edit mode.
In order to access the custom handle settings in Edit Mode, they are
moved to Bone and EditBone, while the bPoseChannel fields are downgraded
in status to a cache for performance. Also, instead of flags, introduce
an enum to specify the handle operation modes, so that new ones could
be added later.
Reviewers: aligorith, brecht
Differential Revision: https://developer.blender.org/D3588
