Blender Git Loki

Fix undefined variable on errors in Cycles ctests.

Reviewed By: brecht

Differential Revision: https://developer.blender.org/D2201

[CMAKE/Platform/Windows] Only perform version check if the actual compiler is MSVC

Fix OpenSubdiv related buffer overrun with multiple FVar channels.

The existing code uses the input value count of the first channel
for all of them. If the first channel is the largest, it leads to
a crash-causing buffer overrun in memcpy below. Likely this was
left since the time when only one channel was supported.

As a crash fix, probably should go into 2.78

Cycles: Fix regular BVH nodes refit

For proper indexing to work we need to use unaligned node with
identity transform instead of aligned nodes when doing refit.

To be backported to 2.78 release.

Cycles: Add asserts to BVH node packing

Fix T49286: Compilation error with XCode 7.0

Weirdly enough, this version of XCode seems to have static_assert()
even when NOT using C++11. This is totally weird and counter intuitive
since static_assert() is supposed to be C++11 onlky feature.

Can XCode stop using future, please? :)

Fix T49273: Crash during access to dupli weights at launch time.

See commit's comments for details, but this boils down to: do not try to use
purely runtime cache data as a 'real' ID pointer in readcode, it's likely
doomed to fail in some cases, and is bad practice in any case!

Thix fix implies dupliweight's object will be invalid until first scene update
(i.e. first particles evaluation).

OpenSubdiv: Support multiple materials drawing in Cycles textured view

Consider for inclusion into 2.78.

Cycles: Cleanup: line wrapping

[cmake/cpack] allow override of package name

Cpack generates a standard filename with git information in it, which might not always be wanted for release builds, this patch adds an option to override that default filename.

Reviewers: sergey, juicyfruit

Reviewed By: juicyfruit

Differential Revision: https://developer.blender.org/D2199

ammended to fix: wrong variable name in main CMakeLists.txt

Cycles: Fix OpenCL speed regression introduced with the improved bump mapping

The two SVM nodes added with e7ea1ae78c caused a slowdown on AMD cards when rendering with OpenCL, whether displacement was used or not.
In the Barcelona Pavillon scene on a RX480, this would cause a 12% slowdown.

Therefore, this commit adds a additional flag for feature-adaptive compilation so that the new SVM nodes are only enabled when they are needed (Node tree connected to the Displacement output and Displacement type set to Both).

Also, the nodes were also added to shaders when the Displacement Type was set to Bump (the default), which was unneccessary and is fixed now.

Thanks to linda2 on IRC for reporting and testing and to maiself for help with the displacement shader code.

This fix might be relevant for 2.78, but it should be tested further before including it.

Fix T49283: Crash in BKE_ptcache_make_particle_key.

This is really hack-fix actually, not sure why `get_pointcache_keys_for_time()` seems to assume
it will always find key for given part index at least for current frame, and whether this assumption
is wrong or whether bug happens elsewhere...

Anyway, this is to be wiped out in 2.8, so no point loosing too much time on it, for now merely
returning unchanged (i.e. zero'ed) ParticleKeys in case index2 is invalid. Won't hurt anyway,
even if this did not crash in release builds, would be returning giberish values.

OpenSubdiv: Fix missing ORCO when enabling OSD but having dependency to the geometry

Was causing huge viewport lags.

Reported by angavrilov in IRC, thanks!

Safe and nice for 2.78.

Fix cast shadows (material option) in the viewport

Fix cast shadows options (in material tab) not working in the viewport.
An off-by-one error. See D2194 for more.

Committing for Ulysse Martin (youle) who found & fixed this.

Revert "Depsgraph: Prioritize evaluation of the new scheduled nodes"

This reverts commit 9444cd56db1a4e43d03fa8c735cd893b2e74b913.

This commit caused some flickering in the bones when swapping IK to Fk.

While it's unclear why such change caused any regressions, let's revert
it to unlock the studio.

Fix T49251: moving smoke domain with additional resolution causes crash.

This is a bug in the multithreaded task manager in negative value range.

The problem here is that if previter is unsigned, the comparison in the
return statement is unsigned, and works incorrectly if stop < 0 &&
iter >= 0. This in turn can happen if stop is close to 0, because this
code is designed to overrun the stop by chunk_size*num_threads as
the threads terminate.

This probably should go into 2.78 as it prevents a crash.

Add script which scales splash screen down

Based on reading documentation around. This particular version
is based on the ImageMagic documentation which could be found
there:

http://www.imagemagick.org/Usage/filter/
http://www.imagemagick.org/Usage/filter/nicolas/

Current filter is based on measuring mean error with the current
splash screen and choosing combination of parameters which
gives minimal mean error.

Fix T49252: Crash when image textures used with true displacement

Fix own mistake in recent rB8b2a45052093, broke saving render results as images in some cases.

Reported by sebastian_k over IRC, thanks.

To be backported to 2.78.

Fix T41883: Strip keyframes not respected for scenes rendered by other scenes