Blender Git Commits

Corner handle calculation could fail (for larger curves especially)

Replace this with an optional return array of corner indices on final output curve.

Merge branch 'master' into HMD_viewport

Fix crash when stopping HMD session

OpenHMD context should only be closed when deleting GHOST_OpenHMDManager, forgot to change that in rB0c029b7f86a0.

Don't split view in lens distortion shader

We don't want to do this in lens distortion shader since we can't add the view offset needed for the 3D effect.

Change curve fitting not to store duplicate points.

Return an array of [handle, knot, handle]'s instead of [knot, handle, handle, knot].

Add curve/pressure option

Add doxygen headers

Initial cubic fitting, curve freehand drawing

Cycles: Use dedicated BVH for triangles and hair

This is a required step forward OBB type of BVH which will be more optimal
for hair but less optimal for triangles. Which means, we'll need to have
dedicated hair BVH once we'll start working on OBB BVH.

This commits does exactly that: there are now two separate BVH, one is
fully dedicated to triangles and another one is fully dedicated to hair.
They are built separately and also traversed separately.

This allows:

- Get rid of triangle storage for curve primitives, which solves memory
usage issue without slowdown of triangles intersection test.

- Perform test against triangles for shadow rays, which will often lead
to som speed gain because ray often hits opaque triangle and in this
case it's not needed to do any ray-to-curve intersections.

Unfortunately, current implementation used 7 more textures, which is quite
bad on lower end GPUs due to tight number of textures limit, which means
less image textures can be used now.

Here are some numbers:

Master Patch
Koro.blend
Memory during render(Mb): 910 814
Peak memory(Mb): 984 963
Render time: 5m 51s 5m 21s

Bunny.blend
Memory during render(Mb): 8034 6375
Peak memory(Mb): 9058 7713
Render time: 9, 25s 7m 44s

There are some render result difference with low number of samples,
probably because of different order of geometry hits when there are
multiple primitives at the same depth. But that's to be doublechecked.

There should be no affect on scenes with just triangles.

Since there are some interesting results already decided to put it
online for some more tests.

Correction to previos commit: Use int for region size

Use non-fixed screen size for lens distortion shader

Was assuming 1920x1080. Also minor cleanup.

Fix OSLRenderServices not finding attributes when subdivision is enabled

Use size_t in LRU to allow cache sizes larger than 4gb

Merge remote-tracking branch 'maiself/microdisp' into microdisp

Revert local commits to allow merging Mai's branch in

Fix bug in offset calculation of attributes for subdivision patches

Merge branch 'master' into asset-engine

Merge branch 'master' into id-remap

Add compilation fixes for MSVC

Fixing two out-of-bounds bugs in the SubPatch code

Credit for the actual fixes goes to Mai Lavelle.