Blender Git Loki

fix T49494: snap_align_rotation should use a local pivot to make the transformation

The problem was simple, just transform the global coordinates of t->tsnap.snapTarget to local coordinates.
(Some comments were added to the code)

Fix shaders in some immBindBuiltinProgram calls

Had mistakenly used 3D shaders for some 2D drawings...
Replaced those now.

Part of T49043

Merge branch 'master' into cycles_split_kernel

More lamp work

Merge branch 'master' into blender2.8

Use vec2 for screen space stuff

Fix T50084: Adding torus re-orders UV layers.

Issue was indeed in join operation, mesh in which we join all others
could be re-added to final data after others, leading to undesired
re-ordering of CD layers, and existing vertices etc. being shifted away
from their original indices, etc.

All kind of more or less bad and undesired changes, fixed by always
re-inserting destination mesh first.

Also cleaned up a bit that code, it was doing some rather
non-recommanded things (like allocating zero-sized mem, doing own
coocking to remove a data-block from main, etc.).

Lamp sunrays and shadow circles

Bring back the select button for the UI

install_deps.sh: don't use backticks

The script complained that it could not find the executable "--build-all".

OpenGL immediate mode: transform_snap.c and part of drawnode.c

Also converted ED_node_draw_snap from drawnode.c
Committing these together, as they are inter-dependent.

Part of T49043

Make imm_drawcircball public

(Approved by merwin in IRC)

Required by part of T49043

OpenGL immediate mode: space_graph.c

Part of T49043

Fix unfreed memory

Fix T50524: Basis shapekey editing while rendering bug.

Root of the issue was BM_mesh_bm_to_me() breaking application of basis
offset to 'child' shapekeys, when called more than once from same BMesh.

Fix warnings

Fix depth not cleared

Bypass wires.

Fix ogl warnings.

Fix assert