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Fix T41005: Seemingly random crashes with cycles rendering 

Fix T41013: OSL and Crash
Fix T40989: Intermittent crash clicking material color selector

Issue was caused by not enough precision for inversion threshold.
Use double precision for this threshold now. We might want to
investigate this code a bit more further, stock implementation
uses doubles for all computation. Using floats might be a reason
of bad rows distribution in theory.
This commit is contained in:
Sergey Sharybin 2014-07-10 17:42:38 +06:00
parent 19f89a083f
commit 5e216a6aa9
Notes: blender-bot 2023-02-14 10:24:50 +01:00 
Referenced by issue #41033, Blender crashs with trying to render a cycles scene
Referenced by issue #41013, OSL and Crash
Referenced by issue #41005, Seemingly random crashes with cycles rendering
Referenced by issue #40989, Intermittent crash clicking material color selector
Referenced by issue #40989, Intermittent crash clicking material color selector
Referenced by issue #40971, Environment maps cause a hard crash with OSL enabled
Referenced by issue #40946, Cycles High Resolution Render Crash
Referenced by issue #40864, Cycles; use of color ramp node in latest builds will always crash after save and reload.
1 changed files with 1 additions and 1 deletions
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intern/cycles/render/shader.cpp
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@ -89,7 +89,7 @@ static void beckmann_table_rows(float *table, int row_from, int row_to)
int index_slope_x = 0;
for(int index_U = 0; index_U < BECKMANN_TABLE_SIZE; ++index_U) {
const float U = 0.0000001f + 0.9999998f * index_U / (float)(BECKMANN_TABLE_SIZE - 1);
const double U = 0.0000001 + 0.9999998 * index_U / (double)(BECKMANN_TABLE_SIZE - 1);
/* inverse CDF_P22_omega_i, solve Eq.(11) */
while(CDF_P22_omega_i[index_slope_x] <= U)