Move the weight paint drawing to the fragment shader. The shader
uses a texture that uses the U.coba_weight custom color band, or
an internal color band.
In addition to actual weights, the shader has to display two
alert colors: missing vertex group, and zero weight. The zero
weight alert has to be blended with regular weight colors,
so that a single alert vertex surrounded by weighted ones is
still visible.
Reviewers: campbellbarton, fclem
Differential Revision: https://developer.blender.org/D3675
This commit make the Xray option for the wireframe different from the other
shading mode. This makes it possible to rapidly switch between wireframe +
Xray and Solid mode without Xray.
Xray alpha is also decoupled.
Both variables are duplicated and exposed separately through RNA.
Now handles are drawn using index buffer instead of duplicating memory
requirement.
Also make use of shader tricks to draw handles antialiased, and respond to
UI scalling.
Make vertex point match edit mesh vertex size.
This was because weight paint was using the original obj to show weights.
But the mesh can be deformed by the armature and this is not visible on
the original object.
This makes the Edit Mesh display settings common to all objects. They can
also be set differently per viewport.
Modifying extra data (seams, sharp edges etc...) will no longer set them
automaticaly visible.
Bumping version because we need to force set all extra draw options for
older files.
For onion skin, the cache is set as dirty always because can be too many combinations of overlays and windows and makes impossible to control all changes of dirty flag.
This reduces performance, but it's safer and the onion is disabled while play animation, so the fps value is not affected.
This adds existing behavior from calc_weightpaint_vert_array
that was missing from the new rendering code:
- No selected Vertex Group displays as a solid pink color.
- Zero weight displays as alert color depending on Options.
- Multipaint mode correctly displays collective weight.
In order to properly implement this variety, a data structure
holding all relevant parameters is introduced.
Reviewers: fclem, campbellbarton
Subscribers: jbakker
Differential Revision: https://developer.blender.org/D3722
Use the multiply blending mode for the weight paint overlay.
To support the opacity slider, we need a new shader. Otherwise this combination of multiplication and mixing does not seem to be supported by glBlendFunc.
Reviewers: brecht
Differential Revision: https://developer.blender.org/D3727
We now treat Xray as being the mode where Limit selection to visible is off.
If Xray is OFF, Limit selection to visible is considered ON.
To allow 'see through wires' with solid shading (not Xray shading) we still
draw solid shading if Xray is ON with Xray Alpha set to 1.0.
This is using the existing engine (workbench forward) with 0.0 xray_alpha
and forcing wireframes on all objects.
There is no workflow/shortcut changes in this commit.
This implementation is a bit hacky but match cycles pretty close.
If pixel size is not enabled, it will use the geom shader to
compute distances between vertices. This will have a cost.
Implementation is a bit hacky in gpu_codegen to make the geom shader works
in an optional manner.
