SL-10019 - [Mac] [Render] Right-click context menu immediately disappears when clicking any place in the ‘Inventory’ floater

SL-10005

Approved-by: Andrey Lihatskiy <andreylproductengine@lindenlab.com>

Make set of copied bits (depth and/or stencil) match those present in the source and dest.

May avoid driver crash on Intel HD graphics.

FIX #2

SL-9774 [Render] dragging active Second Life session to second monitor zooms in making viewer unusable

+ remove unreachable code

SL-6613

Approved-by: Andrey Lihatskiy <andreylproductengine@lindenlab.com>
Approved-by: Ruslan Teliuk <ruslantproductengine@lindenlab.com>

SL-6613 more fine-tuning of the logic around rigged alpha shadows to avoid issues when a diffuse texture with alpha is used with non-blended material diffuse alpha modes

SL-1835

Approved-by: Andrey Lihatskiy <andreylproductengine@lindenlab.com>

No change for non-bug, but turning off nSight debugging as it breaks snapshots.

SL-1835

Approved-by: Andrey Lihatskiy <andreylproductengine@lindenlab.com>
Approved-by: Ruslan Teliuk <ruslantproductengine@lindenlab.com>

Make attachmentAlphaMaskShadow frag shader ignore vert alpha which can be incorrect.

Make discard test in attachmentAlphaMaskShadow match other shadow shaders more closely.

Fix highlightF shader compile error.

Fixed.

SL-4178 make deferred version of highlight shader that fills in zero spec and env intensity to keep the shiny down

MAINT-8991: only escape log message characters once, add unit test
remove extra log line created by LL_ERRS
document that tags may not contain spaces

Sim apparently sends finish and start messages simultaneously in case of
scripted or experience teleports

MAINT-9046 honor alpha mode none even when texture has alpha channel when checking state in avatar attachment shadow passes