Blender Git Loki

Don't attempt template loading when they're not present

Minor fixes

Experimental use of package for storing

Cloth refactor: Remove goal springs and some other cleanup

This removes the goal springs, in favor of simply calculating the goal forces on the vertices directly. The vertices already store all the necessary data for the goal forces, thus the springs were redundant, and just defined both ends as being the same vertex.

The main advantage of removing the goal springs, is an increase in flexibility, allowing us to much more nicely do some neat dynamic stuff with the goals/pins, such as animated vertex weights. But this also has the advantage of simpler code, and a slightly reduced memory footprint.

This also removes the `f`, `dfdx` and `dfdv` fields from the `ClothSpring` struct, as that data is only used by the solver, and is re-computed on each step, and thus does not need to be stored throughout the simulation.

Reviewers: sergey

Reviewed By: sergey

Tags: #physics

Differential Revision: https://developer.blender.org/D2514

cleanup use of GPU matrix API

Take advantage of 2D functions, rotation about the X Y or Z axis, uniform scale factors.

We no longer need to call gpuMatrixBegin_legacy() before using the new API locally in functions.

related to T49450

OpenGL: `paint_cursor` port to immediate mode (Part 2)

Part of T49043

Merge branch 'master' into app-templates

Cycles: Fix building for some compilers

Cleanup: remove redundant temp dir init

This is already called by wm_init_userdef, in old code
different initialization methods were used but now it's not needed.

Confusing since prefs are loaded in this function that don't initialize temp.

Simplify path calculation

OpenGL: remove GLU option from build system

Also remove linking in glu libs.

T49042 is now done!

remove mention of GLU from comments

related to T49042

convert last remaining GLU calls in BGE

Focus is on getting rid of GLU. We expect UPBGE to replace current BGE.

Part of T49042

Fix for showing error when no template paths exist

Hide templates from the UI when none are found

Minor sync with master

UI: be more specific about splash sizes

Merge branch 'master' into app-templates

Cleanup: minor wm_homefile_read simplification

Logic in this function is a bit scattered,
minor changes to avoid confusion.

Also rename 'from_memory' to 'use_factory_settings'.

Minor changes, remove force_load_startup