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Cycles: fixes to make CUDA 4.2 work, compiling gave errors in shadows and

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other places, was mainly due to instancing not working, but also found
issues in procedural textures.

The problem was with --use_fast_math, this seems to now have way lower
precision for some operations. Disabled this flag and selectively use
fast math functions. Did not find performance regression on GTX 460 after
doing this.
This commit is contained in:
Brecht Van Lommel
2012-05-28 19:21:13 +00:00
parent c2be2fd408
commit 131de4352b
8 changed files with 34 additions and 22 deletions
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2
intern/cycles/device/device_cuda.cpp
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@@ -259,7 +259,7 @@ public:
path_create_directories(cubin);
string command = string_printf("\"%s\" -arch=sm_%d%d -m%d --cubin \"%s\" --use_fast_math "
string command = string_printf("\"%s\" -arch=sm_%d%d -m%d --cubin \"%s\" "
"-o \"%s\" --ptxas-options=\"-v\" --maxrregcount=%d --opencc-options -OPT:Olimit=0 -I\"%s\" -DNVCC",
nvcc.c_str(), major, minor, machine, kernel.c_str(), cubin.c_str(), maxreg, include.c_str());