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Cycles: Fix stack overflow during traversal caused by floating overflow

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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
parent de669c3b60
commit dfae3de6bd
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);
}