Commit Graph

16 Commits

Author SHA1 Message Date
Brecht Van Lommel
fb99ea79f8 Code refactor: split displace/background into separate kernels, remove luma. 2017-10-05 17:57:58 +02:00
Brecht Van Lommel
6da6f8d33f Cycles: CUDA faster rendering of small tiles, using multiple samples like OpenCL.
The work size is still very conservative, and this doesn't help for progressive
refine. For that we will need to render multiple tiles at the same time. But this
should already help for denoising renders that require too much memory with big
tiles, and just generally soften the performance dropoff with small tiles.

Differential Revision: https://developer.blender.org/D2856
2017-10-04 21:58:47 +02:00
Brecht Van Lommel
e3e16cecc4 Code refactor: remove rng_state buffer and compute hash on the fly.
A little faster on some benchmark scenes, a little slower on others, seems
about performance neutral on average and saves a little memory.
2017-10-04 21:11:14 +02:00
Brecht Van Lommel
5b7d6ea54b Code refactor: add WorkTile struct for passing work to kernel.
This makes sharing some code between mega/split in following commits a bit
easier, and also paves the way for rendering multiple tiles later.
2017-10-04 21:11:14 +02:00
Sergey Sharybin
0579eaae1f Cycles: Make all #include statements relative to cycles source directory
The idea is to make include statements more explicit and obvious where the
file is coming from, additionally reducing chance of wrong header being
picked up.

For example, it was not obvious whether bvh.h was refferring to builder
or traversal, whenter node.h is a generic graph node or a shader node
and cases like that.

Surely this might look obvious for the active developers, but after some
time of not touching the code it becomes less obvious where file is coming
from.

This was briefly mentioned in T50824 and seems @brecht is fine with such
explicitness, but need to agree with all active developers before committing
this.

Please note that this patch is lacking changes related on GPU/OpenCL
support. This will be solved if/when we all agree this is a good idea to move
forward.

Reviewers: brecht, lukasstockner97, maiself, nirved, dingto, juicyfruit, swerner

Reviewed By: lukasstockner97, maiself, nirved, dingto

Subscribers: brecht

Differential Revision: https://developer.blender.org/D2586
2017-03-29 13:41:11 +02:00
Mai Lavelle
817873cc83 Cycles: CUDA implementation of split kernel 2017-03-08 01:24:53 -05:00
Sergey Sharybin
dde40989f3 Cycles: Store shadow intersections in the kernel globals
Seems CUDA failed to de-duplicate the array across multiple inlined
versions of the shadow_blocked(). Helped it a bit with that now.

Gives about 100MB memory improvement on a scenes after previous
commit and brings up memory "regression" to only 100MB comparing to
the master branch now.
2017-02-08 14:00:48 +01:00
Brecht Van Lommel
e26eb9c93b Cycles: reduce CUDA stack memory access for Maxwell and up, increasing max registers.
For non-branched path tracing with a GTX 960 and CUDA 7.5, this gives a small reduction
in stack usage but mainly: 8% faster render on BMW, 5% on pabellon, 13% on classroom.
2016-06-19 20:17:26 +02:00
Thomas Dinges
4422b3f919 Some fixes for CUDA runtime compile:
* When Baking wasn't used we got an error.
* On top of Volume Nodes (NODES_FEATURE_VOLUME), we now also check if we need volume sampling code,
so we can disable that as well and save some further compilation time.
2016-05-06 23:13:33 +02:00
Sergey Sharybin
700722f686 Cycles: Cleanup, indent nested preprocessor directives
Quite straightforward, main trick is happening in path_source_replace_includes().

Reviewers: brecht, dingto, lukasstockner97, juicyfruit

Differential Revision: https://developer.blender.org/D1794
2016-03-25 13:55:42 +01:00
Sergey Sharybin
ff0dcc5d70 Cycles: Make kernel compilable for 3.7 compute capability
It is used by GK210 GPUs which could be found in, i.e. Tesla K80.
2016-01-28 11:56:09 +01:00
Dalai Felinto
9a76354585 Cycles-Bake: Custom Baking passes
The combined pass is built with the contributions the user finds fit.

It is useful for lightmap baking, as well as non-view dependent effects
baking.

The manual will be updated once we get closer to the 2.77 release.
Meanwhile the new page can be found here:

http://dalaifelinto.com/blender-manual/render/cycles/baking.html

Reviewers: sergey, brecht

Differential Revision: https://developer.blender.org/D1674
2016-01-15 13:00:56 -02:00
Sergey Sharybin
3918c8b9a5 Cycles: Optionally output luminance from the shader evaluation kernel
This makes it possible to move some parts of evaluation from host to the device
and hopefully reduce memory usage by avoid having full RGBA buffer on the host.

Reviewers: juicyfruit, lukasstockner97, brecht

Reviewed By: lukasstockner97, brecht

Differential Revision: https://developer.blender.org/D1702
2015-12-30 19:04:04 +05:00
Martijn Berger
de0672436b Add support for compiling the cuda kernel on the Nvidia Jetson TX1 2015-12-07 17:51:24 +01:00
Sergey Sharybin
099aaea447 Cycles: Move branched path tracking into own file
Code there started becoming a bit too big, by splitting it up it'll make it
easier to do improvements or extending the features in there.

The layout is not totally final yet, would need to try de-duplicating parts
of code from split kernel with non-split integrators,
2015-06-15 23:02:42 +02:00
Sergey Sharybin
2c503d8303 Cycles: Restructure kernel files organization
Since the kernel split work we're now having quite a few of new files, majority
of which are related on the kernel entry points. Keeping those files in the
root kernel folder will eventually make it really hard to follow which files are
actual implementation of Cycles kernel.

Those files are now moved to kernel/kernels/<device_type>. This way adding extra
entry points will be less noisy. It is also nice to have all device-specific
files grouped together.

Another change is in the way how split kernel invokes logic. Previously all the
logic was implemented directly in the .cl files, which makes it a bit tricky to
re-use the logic across other devices. Since we'll likely be looking into doing
same split work for CUDA devices eventually it makes sense to move logic from
.cl files to header files. Those files are stored in kernel/split. This does not
mean the header files will not give error messages when tried to be included
from other devices and their arguments will likely be changed, but having such
separation is a good start anyway.

There should be no functional changes.

Reviewers: juicyfruit, dingto

Differential Revision: https://developer.blender.org/D1314
2015-05-22 16:31:34 +05:00