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Cycles: Add an experimental CUDA kernel.

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Now we build 2 .cubins per architecture (e.g. kernel_sm_21.cubin, kernel_experimental_sm_21.cubin).
The experimental kernel can be used by switching to the Experimental Feature Set: http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Cycles/Experimental_Features

This enables Subsurface Scattering and Correlated Multi Jitter Sampling on GPU, while keeping the stability and performance of the regular kernel.

Differential Revision: https://developer.blender.org/D762
Patch by Sergey and myself.

Developer / Builder Note:
CUDA Toolkit 6.5 is highly recommended for this, also note that building the experimental kernel requires a lot of system memory (~7-8GB).
This commit is contained in:
Thomas Dinges
2014-08-26 17:02:03 +02:00
parent f6e049cd5a
commit fb3f32760d
7 changed files with 88 additions and 55 deletions
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@@ -984,8 +984,9 @@ if env['OURPLATFORM']!='darwin':
dir=os.path.join(env['BF_INSTALLDIR'], VERSION, 'scripts', 'addons','cycles', 'lib')
for arch in env['BF_CYCLES_CUDA_BINARIES_ARCH']:
kernel_build_dir = os.path.join(B.root_build_dir, 'intern/cycles/kernel')
cubin_file = os.path.join(kernel_build_dir, "kernel_%s.cubin" % arch)
cubininstall.append(env.Install(dir=dir,source=cubin_file))
for suffix in ('', '_experimental'):
cubin_file = os.path.join(kernel_build_dir, "kernel%s_%s.cubin" % (suffix, arch))
cubininstall.append(env.Install(dir=dir,source=cubin_file))
# osl shaders
if env['WITH_BF_CYCLES_OSL']: