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ColorTable fix for crash on volta.

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This commit is contained in:
Aaron Knoll 2018-08-30 11:27:12 -06:00
parent 1d5a40e5bd
commit b18a595d16
1 changed files with 4 additions and 2 deletions
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6
vtkm/exec/ColorTable.hxx
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@ -303,6 +303,8 @@ inline float DivergingAngleDiff(float a1, float a2)
VTKM_EXEC
inline float DivergingAdjustHue(const vtkm::Vec<float, 3>& msh, float unsatM)
{
const float sinS = vtkm::Sin(msh[1]);
if (msh[0] >= unsatM - 0.1f)
{
// The best we can do is hold hue constant.
@ -312,8 +314,7 @@ inline float DivergingAdjustHue(const vtkm::Vec<float, 3>& msh, float unsatM)
{
// This equation is designed to make the perceptual change of the
// interpolation to be close to constant.
float hueSpin =
(msh[1] * vtkm::Sqrt(unsatM * unsatM - msh[0] * msh[0]) / (msh[0] * vtkm::Sin(msh[1])));
float hueSpin = msh[1] * vtkm::Sqrt(unsatM * unsatM - msh[0] * msh[0]) / (msh[0] * sinS);
constexpr float one_third_pi = vtkm::Pi_3f();
// Spin hue away from 0 except in purple hues.
@ -609,6 +610,7 @@ vtkm::Vec<float, 3> ColorTableDiverging::MapThroughColorSpace(const vtkm::Vec<fl
detail::LabToMsh(lab2, msh2);
// If the endpoints are distinct saturated colors, then place white in between
// them.
constexpr float one_third_pi = vtkm::Pi_3f();
if ((msh1[1] > 0.05f) && (msh2[1] > 0.05f) &&
(detail::DivergingAngleDiff(msh1[2], msh2[2]) > one_third_pi))