Commit Graph

17 Commits

Author SHA1 Message Date
Thomas Dinges
5c0a67b325 Cycles: Add single channel texture support for OpenCL.
This way OpenCL devices can also benefit from a smaller memory footprint, when using e.g. bumpmaps (greyscale, 1 channel).

Additional target for my GSoC 2016.
2016-08-14 20:21:08 +02:00
Thomas Dinges
9d236ac06c Cycles: Enable half float support (4 channels and 1 channel) on CUDA.
Atm OpenEXR half files benefit from this and will use only 1/2 of the memory now. More space for HDRs!

Part of my GSoC 2016.
2016-08-11 22:47:53 +02:00
Thomas Dinges
5ac7ef873b Cycles: Change code order for Image Data Types.
Now we have the 4 component ones first (float4, byte4, half4) followed by the 1 component ones (float, byte, half).
Makes code a bit more consistent and also reduces code a bit when enabling half support on GPU in next commit.

This also exposed a typo in half CPU images for 3D textures, which wasn't used yet, but good to have that one fixed anyway.
2016-08-11 22:30:03 +02:00
Lukas Stockner
bbbc079a6c Cycles: Correct maximum number of textures on pre-Kepler CUDA cards
Commit c96ae81160ad added three data textures and therefore removed three image texture slots, but the value in util_textures.h wasn't updated.
2016-08-10 17:19:16 +02:00
Thomas Dinges
6311a9ff23 Cycles: Support half and half4 textures.
This is an initial commit for half texture support in Cycles.
It adds the basic infrastructure inside of the ImageManager and support for these textures on CPU.

Supported:
* Half Float OpenEXR images (can be used for e.g HDRs or Normalmaps) now use 1/2 the memory, when loaded via disk (OIIO).

ToDo:
Various things like support for inbuilt half textures, GPU... will come later, step by step.

Part of my GSoC 2016.
2016-06-19 17:31:16 +02:00
Thomas Dinges
dc07a5561f Cleanup: Further tweaks for consistency and simplifications.
Now I can start adding half float without adding even bigger mess to all these functions. ;)
2016-05-27 23:35:29 +02:00
Thomas Dinges
2ee063868d Cleanup: Shorten texture variables, tex and image was kinda redundant.
Also make prefix consistent, so it starts with either TEX_NUM or TEX_START, followed by texture type and architecture.
2016-05-27 22:58:33 +02:00
Thomas Dinges
c9f1ed1e4c Cycles: Add support for bindless textures.
This adds support for CUDA Texture objects (also known as Bindless textures) for Kepler GPUs (Geforce 6xx and above).
This is used for all 2D/3D textures, data still uses arrays as before.

User benefits:
* No more limits of image textures on Kepler.
 We had 5 float4 and 145 byte4 slots there before, now we have 1024 float4 and 1024 byte4.
 This can be extended further if we need to (just change the define).

* Single channel textures slots (byte and float) are now supported on Kepler as well (1024 slots for each type).

ToDo / Issues:
* 3D textures don't work yet, at least don't show up during render. I have no idea whats wrong yet.
* Dynamically allocate bindless_mapping array?

I hope Fermi still works fine, but that should be tested on a Fermi card before pushing to master.

Part of my GSoC 2016.

Reviewers: sergey, #cycles, brecht

Subscribers: swerner, jtheninja, brecht, sergey

Differential Revision: https://developer.blender.org/D1999
2016-05-19 13:14:37 +02:00
Thomas Dinges
3c85e1ca1a Cycles: Add support for single channel byte textures.
This way, we also save 3/4th of memory for single channel byte textures (e.g. Bump Maps).

Note: In order for this to work, the texture *must* have 1 channel only.
In Gimp you can e.g. do that via the menu: Image -> Mode -> Grayscale
2016-05-12 14:51:42 +02:00
Thomas Dinges
cde10e774c Fix array bounds compile warning. 2016-05-12 14:20:12 +02:00
Thomas Dinges
8de3303a03 Cleanup: Fix typo. 2016-05-12 02:11:36 +02:00
Thomas Dinges
4a4f043bc4 Cycles: Add support for single channel float textures on CPU.
Until now, single channel textures were packed into a float4, wasting 3 floats per pixel. Memory usage of such textures is now reduced by 3/4.
Voxel Attributes such as density, flame and heat benefit from this, but also Bumpmaps with one channel.
This commit also includes some cleanup and code deduplication for image loading.

Example Smoke render from Cosmos Laundromat: http://www.pasteall.org/pic/show.php?id=102972
Memory here went down from ~600MB to ~300MB.

Reviewers: #cycles, brecht

Differential Revision: https://developer.blender.org/D1981
2016-05-11 21:58:34 +02:00
Thomas Dinges
76481eaeff Cycles: Add support for float4 textures on OpenCL.
Title says it all, this adds OpenCL float4 texture support.

There is a bug in the code still, I get a "Out of ressources error" on nvidia hardware here, not sure whats wrong yet.
Will investigate further, but maybe someone else has an idea. :)

Reviewers: #cycles, brecht

Subscribers: brecht, candreacchio

Differential Revision: https://developer.blender.org/D1983
2016-05-10 02:53:50 +02:00
Thomas Dinges
9a1e11260c Cleanup: More byte -> byte4 renaming for consistency. 2016-05-09 02:22:01 +02:00
Thomas Dinges
3807bcb3a8 Cleanup: Rename texture slots to float4 and byte, to distinguish from future float (single channel) and half_float slots.
Should be no functional changes, tested CPU and CUDA.
2016-05-06 14:37:35 +02:00
Thomas Dinges
557544f2c4 Cycles: Refactor Image Texture limits.
Instead of treating Fermi GPU limits as default,
and overriding them for other devices,
we now nicely set them for each platform.

* Due to setting values for all platforms,
we don't have to offset the slot id for OpenCL anymore,
as the image manager wont add float images for OpenCL now.

* Bugfix: TEX_NUM_FLOAT_IMAGES was always 5, even for CPU,
so the code in svm_image.h clamped float textures with alpha on CPU after the 5th slot.

Reviewers: #cycles, brecht

Reviewed By: #cycles, brecht

Subscribers: brecht

Differential Revision: https://developer.blender.org/D1925
2016-04-16 20:49:59 +02:00
Thomas Dinges
9c916b0172 Cleanup: Move texture definitions to util, to avoid bad level include. 2016-04-15 23:02:44 +02:00