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Cycles: Fix stack overflow during traversal caused by floating overflow 

Would be nice to be able to catch this with assert as well, will see what would
be the best way to do this/.\

Need to verify with Mai that this solves crash for her and maybe consider
porting this to 2.79.
This commit is contained in:
Sergey Sharybin 2017-08-25 14:00:33 +02:00 committed by Bastien Montagne
parent 6825439b36
commit 75e392ae9f
1 changed files with 12 additions and 12 deletions
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24
intern/cycles/bvh/bvh4.cpp
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@ -242,21 +242,21 @@ void BVH4::pack_unaligned_node(int idx,
* so kernel might safely assume there are always 4 child nodes.
*/
data[1][i] = 1.0f;
data[2][i] = 0.0f;
data[3][i] = 0.0f;
data[1][i] = NAN;
data[2][i] = NAN;
data[3][i] = NAN;
data[4][i] = 0.0f;
data[5][i] = 0.0f;
data[6][i] = 0.0f;
data[4][i] = NAN;
data[5][i] = NAN;
data[6][i] = NAN;
data[7][i] = 0.0f;
data[8][i] = 0.0f;
data[9][i] = 0.0f;
data[7][i] = NAN;
data[8][i] = NAN;
data[9][i] = NAN;
data[10][i] = -FLT_MAX;
data[11][i] = -FLT_MAX;
data[12][i] = -FLT_MAX;
data[10][i] = NAN;
data[11][i] = NAN;
data[12][i] = NAN;
data[13][i] = __int_as_float(0);
}