[Bf-cycles] SSS works with CUDA on GPU

[Thomas Dinges]

Hi,
I tested SSS on GPU from time to time, and always got compile errors 
during the kernel compilation.

But with latest SVN this surprisingly works?! Simply enabling the 
feature and compile the CUDA kernel (sm_21 tested here, on Geforce 540M).
As far as I can tell it renders correct with all fallof modes. Have not 
messured performance yet.

Best regards,
Thomas

Index: intern/cycles/kernel/kernel_types.h
===================================================================
--- intern/cycles/kernel/kernel_types.h    (revision 60526)
+++ intern/cycles/kernel/kernel_types.h    (working copy)
@@ -68,6 +68,7 @@
  #if __CUDA_ARCH__ >= 200
  #define __KERNEL_ADV_SHADING__
  #define __BRANCHED_PATH__
+#define __SUBSURFACE__
  #endif
  #endif




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