Add 'G_draw' for all draw manager globals,
avoids adding extern to each file.
Connection between `ts` and `globals_ubo` wasn't obvious,
now called `G_draw.block` & `G_draw.block_ubo`.
Experiment: let the user be in control of the alpha channel as some rigs
are hard too see during bone selection. Especially rigs that were
designed for 2.79 wireframe mode.
Bone selection overlay is only available in pose mode.
and when active overrules the selection buffer.
This is currently `tricked` by switching the draw engines, but this is
an exception. Not sure how to solve this in a better way.
After this is solved we can look at how to localize the dim effect to only the objects connected to the active armatures. Currently it dims the whole screen (including background).
@campbellbarton I added you as reviewer as it you have done a lot in the DRW_draw_select_loop
Reviewers: campbellbarton, fclem
Reviewed By: fclem
Subscribers: campbellbarton
Tags: #bf_blender_2.8, #code_quest
Maniphest Tasks: T54983
Differential Revision: https://developer.blender.org/D3241
In object mode, the axes are drawn like any other wire objects with
depth test and depth write. Thus enabling MSAA to work but not their xray
behaviour.
In edit armature/pose mode, draw smooth line without depth testing. This
produces wrong draw ordering problem but still gives the desired xray
behaviour. We do it outside of the MSAA pass since the xray behaviour is not
compatible with it. But we are drawing smoothed lines so no need for MSAA.
The lines are 2px thick and improve readability.
We now use a more pleasant and efficient way to display enveloppe bones
and their radius.
For this we use a capsule geometry that is displaced (in the vertex shader)
to a signed distance field that represents the bone shape.
The bone distance radius are now drawn in 3D using a "pseudo-fresnel" effect.
This gives a better understanding of what is inside the radius of influence.
When capsules are not needed, we switch to default raytraced points.
The capsules are not distorded by the bone's matrix (same as their actual
influence radius) and are correctly displayed even with complex scaled
parents hierarchy.
This fix the issue with the zfighting we were getting at bones edges.
Moreover, this enables us to render arbitrarly large outline with
varying thickness.
This adds initial multi-object editing support.
- Selected objects are used when entering edit & pose modes.
- Selection & tools work on all objects however many tools need porting
See: T54641 for remaining tasks.
Indentation will be done separately.
See patch: D3101
For simplicity we choose to execute the rendering of Opengl engines in the main thread and block the interface.
This might be addressed in the future at least for video rendering.
A drawmanager wrapper (DRW_render_to_image) is called by the render pipeline to set up the Opengl state and then call the specific draw_engine->render_to_image function.
Note: We should test if the armature is the "armature modifier" parent of the
object.
If any good samaritan feels like tackling this, the function to change
is: DRW_pose_mode_armature
In the future this will allow us to implement things like face manipulators.
For now however, this is getting on the way of using pose mode
(mesh objects are drawn green).
NOTE: pose engine should also be the one taking care of pose bones
(and for that matter, X-Ray armature option should/could be a property
of the Pose engine even).
Same as MEM_SAFE_FREE macro,
checks for NULL, runs free then sets NULL.
Blocks of code that do this many times are noisy and likely
errors here wouldn't be noticed immediately.
Also NULL's static vars which were being left set.
This removes MAX_STORAGE, MAX_BUFFERS, MAX_TEXTURES, MAX_PASSES limits.
Actual memory saving isn't so important, it just means we don't need to
manually bump these based on changes to engines.
