Blender Git Loki

Revert "Fix T52871: `BLI_polyfill_beautify_quad_rotate_calc_ex` was mistakenly considering the state as degenerated"

This reverts commit a8f11f5422afa01608817755eea310e987f896be.

Result is no longer symmetrical, will investigate a different fix.

Fix T52871: beauty fill error

Only lock tri's facing different directions.
Needed because scanfill creates zero area faces.

Beauty fill was skipping small faces

Polyfill Beautify: half-edge optimization

Was using an edge hash for triangle -> edge lookups,
updating triangle indices for each edge-rotation.

Replace this with half-edge which can rotate edges much more simply,
writing triangles back once the solution has been calculated.

Gives ~33% speedup in own tests.

Correct gtest error in recent beautify change

GTest: initial BLI_heap test

BLI_hash: add BLI_heap_reinsert

Allows avoiding remove/insert calls.

Use BLI_heap_reinsert for decimate and beautify

Improves performance for high poly meshes,
~70% faster for decimate, only ~10% for beautify.

BLI_heap: minor changes to the API

Recent addition of 'reinsert' didn't match logic for ghash API.

Rename to BLI_heap_node_value_update,
also add BLI_heap_insert_or_update since it's a common operation.

fix T53230: avoid Nullpointer problems in Collada Exporter

Fix incorrect MIS with principled BSDF and specular roughness 0.

Fix part of T53038: principled BSDF clearcoat weight has no effect with 0 roughness.

CMake: support CUDA 9 toolkit, and automatically disable sm_2x binaries.

Fermi cards (GTX 4xx and 5xx) are no longer supported with this version, so
we can keep supporting both CUDA 8 and 9 for a while.

Fix T52801: reload scripts causes Cycles viewport render crash.

Fix Cycles bug in RR termination, probability should never be > 1.0.

This causes render differences in some scenes, for example fishy_cat
and pabellon scenes render brighter in a few spots. This is an old
bug, not due to recent RR changes.

Fix T53600: Cycles shader mixing issue with principled BSDF and zero weights.

SVM nodes need to read all data to get the right offset for the following node.
This is quite weak, a more generic solution would be good in the future.

Fix T53309: Remove default 'Clear loc/rot/scale delta transform' shortcuts.

The loc one (shift-alt-G) was same as 'remove selected from active group'
action... Clear delta transform is not a common operation, so we can
live without a default shortcut for it.

Note that using same key (G) in same space for two completely different
kind of operations is probably a rather bad thing, nice topic for future
keymap work. ;)

Probably nice to have in 2.79a.

Fix: Undo pushes were missing for Add/Remove Driver Variable buttons, and Remove Driver button

Fix T53300: Bone Extrude via Ctrl + Click is not done from active bone tail

Fix T53185: After rendering an animation (Ctrl-F12), pressing F12 no longer renders single frames only