Blender Git Loki

Cleanup: GPU codegen: remove most of legacy code

A lot of code in codegen was used by previous GLSL system.
Now most of it is not used due to all the things being written from scratch
in 2.8 and we can clean most of it.

As a side not this make the system a bit less flexible (no support for
cubemaps, preview image, etc...) but can be extended again.

Cleanup: Rename GPU_* functions to make more sense

* Remove GPU_link_changed which is unused.
* Remove all GPU link function that are not used anymore.
* GPU_uniform_buffer is now GPU_uniform.
* GPU_texture_ramp is now GPU_color_band.
* GPU_uniform is now GPU_constant.

Fix T55802 shader compile bug with texture gather on old Nvidia card

The extension GL_ARB_texture_gather is reported to be supported and does
not trigger an error when enabled but the textureGater functions are not
defined.

Workaround is to disable the use of this extension on such systems.

build_environment: Remove lapack

build_environment: iconv 1.15

build_environment: fftw 3.3.8

build_environment: openexr support debug build.

Use full transformation of B-Bone segments in Copy Transforms.

Currently constraints can only read the location along the
spline. This obviously limits opportunities for complex bone
interactions in rigs.

This patch exposes access to rotation and scale as well in
Copy Transforms. However, due to the way how things work,
this data cannot be smoothly interpolated, and abruptly
changes when switching to the next segment.

Reviewers: aligorith

Differential Revision: https://developer.blender.org/D3545

build_environment: alembic 1.7.8

Implement multiplicative Copy Scale and make it the new default.

Scale is a multiplicative quantity, so adding it doesn't make sense.
However, for backward compatibility reasons, and in case somebody
actually desires the old additive behavior, the old way remains as
an option.

Without this change the only way to properly combine scale is via
parenting or the complicated Transformation constraint.

The new mode is turned on by a flag for file compatibility, but the
RNA option is reversed so that the new behavior feels more default.

Reviewers: aligorith

Differential Revision: https://developer.blender.org/D3558

Fix dependency graph for constraints depending on B-Bone shape.

Some constraints have an option to take the final bezier shape of
the target B-Bone into account. This shape usually depends on two
other bones in addition to the target itself, so the graph should
include the relevant dependencies.

Reviewers: sergey

Differential Revision: https://developer.blender.org/D3591

Merge branch 'master' into blender2.8

Fix T55745: Pick Shortest Path tool, inconsistent selection.

To get consistent, user-expected results here, we need to 'fake'
starting immediately after a 'skip' block (such that we start with a
full block of selected elements).

Same issue affected vertices and edges selection of course, did not
check the other usages of WM_operator_properties_checker_interval_test()
though.

build_environment: fix windows ilmbase/openexr support.

seems like the openexr 2.3.0 release tarball has broken cmake support, latest from git works
we'll have to revisit this once they get a new release out.

Version update to 2.80 Alpha 2, new splash from Hero open movie.

Subsurf: Introduce quality option

For users it defines how accurate vertex positions are in terms
of limit surface (as in, how close the vertices locations to the
condition when they are calculated for an infinitely subdivided
mesh).

This affects things like:

- Irregular vertices (joint of 3 or more edges)
- Crease

Keep quality value low for performance.

NOTE: Going higher does not necessarily mean real improvement
in quality, ideal case might be reached well before maximum
quality of 10. Quality of 3 is a good starting point.

Internally quality is translated directly to adaptive subdivision
level.

Reviewers: brecht

Reviewed By: brecht

Differential Revision: https://developer.blender.org/D3599

build_environment: ffmpeg 4.0.2

with
lame 3.100
ogg 1.3.3
vorbis 1.3.6
flac 1.3.2
vpx 1.7.0
x264 20180811
xvidcore 1.3.5
faad 2.8.8

Fix bevel problem for vertex-only cube corners.

Was introduced by code from gsoc branch that does better job
on cube corners, but shouldn't have applied to vertex-only case.

build_environment: update ilmbase and openexr to 2.3.0

Depsgraph: Build node and relations for movieclip ID for its nodes

Otherwise we get asserts when opening files with the Move Distortion node.