Blender Git Loki

Fix: Mesh Edit Mode Shader: Correct artifacts that appeared on edges of edit mode with some AMD GPUs

In case the problem appeared with the `AMD Radeon HD 7570M`

Merge branch 'blender2.8' into greasepencil-object

Fix error with normal vector calculation

In some weird situations, the normal vector of the stroke cannot be calculated and this produces errors, specially in modifiers like lighting modifier.

Now, if the stroke selected is not valid, try with the next stroke to get a right value.

small transform fix for animated mesh binding

Fix unreported: Eevee Principled Shader: Crash because Intel does not like dead code

The reason for the crash is still a bit confusing, but on Windows with Intel HD Graphics 4000 it always happens when you enable `Use Nodes` or when you try to connect the Pricipled Shader node to the output without the `Subsurface Scattering` and `Subsurface Translucency` options enabled.

GPU Texture: Add GL_RG16I format.

GPU_batch_from_poly_2d_encoded: skip winding check

Ensure all polygons have the same winding instead.

Cleanup: update comments

GPU_batch_from_poly_2d_encoded: optional rctf arg

Also use compiler attributes

Merge branch 'master' into blender2.8

Allow for multi-gigapixel renders

This patch fixes a 32-bit overflow that occurs on 64-bit systems due to a numeric literal being treated as 32-bit.

This patch allows for the generation of images that occupy more than 4GB of RAM, which previously caused a crash.

Reviewers: sergey

Reviewed By: sergey

Differential Revision: https://developer.blender.org/D2975

Cycles: CLeanup, remove unused function argument

Sculpting: Sdd an option to hide mask in viewport

Brushes themselves are still affected by the mask, but the viewport is not
showing the mask. This way it's easier to see details while sculpting.

Studio request by Julien Kaspar

GPU buffers: Use bitflag to whether we want to show diffuse color

Those fine-tuning bits will be extended soon, so makes sense to start using
some more verbose flag names when calling functions.

Manipulator: vector icons for 3D view navigation

Use different icons for perspective/ortho state
(previous icon was place-holder).

Cleanup and fix comments

Manipulator: support for buttons as vector shapes

GPU_batch: Add utility to create 2D shapes

Shapes are represented by compact byte array,
encoded by 'make_shape_2d_from_blend.py' in the tools repo.

Merge branch 'blender2.8' into greasepencil-object

GPU_batch_presets: move static vars into struct

Also use GWN raw stepping API to fill in data.