Blender Git Commits

Full Inverse-Quadratic-Equation Lamp Falloff

This patch adds a new `falloff_type` ('Inverse Coefficients') for Lamps in
Blender-Internal and GLSL.

The current falloff modes use a formula like this inverse-square one:

`I = E � (D^2 / (D^2 + Q � r^2))`

While such a formula is simple for 3D-artists to use, it's algebraically
cumbersome to work with. Game-designers authoring their own shaders
could benefit much more by having direct control of falloff-coefficients:

`I = E � (1.0 / (coefC + coefL � r + coefQ � r^2))`

In this mode, the `distance` parameter is unused (except for 'Sphere'
mode); instead relying on the designer to mathematically-model the
falloff-behavior.

The UI has been patched like so:
{F153843}

Reviewers: brecht, psy-fi

Reviewed By: psy-fi

Subscribers: brita_, antidote, campbellbarton, psy-fi

Differential Revision: https://developer.blender.org/D1194

Increase node max width to 700px

Opened and collapsed nodes now have a max width of 700px. Animation nodes add-on needs this.

Fix related to T47750: Particle disconnect operator: 'all hair' disabled would not work correctly after first op execution.

This is side issue, main one remains and does not look easy to fix, see report for details.

Cycles: Some typo fixes

Cycles: Support parallel convergence mode for spherical stereo

Fix bad UI range of convergence distance which was above the hard limit

That was rather confusing to slide the value.

Perhaps makesrna can check cases like this?

Cycles: Optimize derivatives calculation by using pre-calculated dx/dy

We've got pixel-wide world-space derivatives which we can use in the
perspective camera sampling. This allows to get rid of two calls to
transform_direction() function.

In theory we can save two transform_perspective() calls if we'll also
save pre-calculated camera-space dx/dy.

Cycles: Cleanup, spherical_stereo_direction will return normalized direction

Previously each call of this function was followed by a normaliztion, now it
is done in the function itself with an according note around the function.

Fix T47763: 2.77 RC2 (Fluid) Particle Baking slower compared to 2.67b.

Static schedule was responsible here...

Also, made a minor optimization in case adaptative (auto) subframes are enabled,
gives a few percent of speedup here.

Cycles: Do no limit viewport samples to USHRT_MAX when value is at 0.

We don't limit manually setting higher values, this was probably overlooked here.

Found by @Blendify in IRC.

Fix crash adding EditNormals modifier to NURBS object (or other types but mesh).

Kinda stupid, but that eModifierTypeFlag_AcceptsCVs could really use a comment alongside
its definition!

Safe to be backported to 2.77.

Minor improvement to last commit

Sign is known in this case, no need to check for either direction.

Math Lib: less complex convex quad check

Revert "Use render path as initial location when saving renders"

This reverts commit cd6442f7d4b56cb40102d86404fbaeae30dd2d32.

Broke workflow for incrementally saving versions of a render.

Cycles: One more optimization fix, derivatives used to be calculated without aperture

At this point it's totally unclear why we're ignoring aperture and and rolling shutter
now for derivatives calculation but do not ignore direction change caused by stereo.

CMake: Warn when buildinfo is disabled due to missing Git

CMake: Avoid call of find_package(Git) for every compile with buildinfo enabled

This is a bit tricky, find_package(Git) was only used to check if git is installed
and actual git command was assumed to be in the PATH (while ideally it should have
been GIT_COMMAND variable).

This commit makes re-compile output cleaner, especially when using Ninja.

Adding proper GIT_COMMAND to buildinfo.cmake is also possible via argument.

Reviewers: campbellbarton

Reviewed By: campbellbarton

Differential Revision: https://developer.blender.org/D1847

Cycles: Fix bug calculating dP for perspective camera

Was introduced by recent optimization. Not really sure derivatives are
intended to work like this, but better to stick to what Dalai had
originally for now.

Cycles: Cleanup, redundant normalization

Fix T47753: World equirectangular regression

D1729 fixed 'View' projection but broke 'Equirectangular'.

This commit also changes equirectangular projection to match Cycles and the viewport.