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Graceful recovery from EPD tone mapping cholesky segfault. Issue 1112, comment 169, committed on behalf of ralf.anderson

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DrSlony 2012-07-29 02:37:30 +01:00
parent ea598952fa
commit 2dc1f0f9ca
1 changed files with 14 additions and 10 deletions
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8
rtengine/EdgePreservingDecomposition.cc
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@ -1,6 +1,5 @@
#include <cmath> #include <cmath>
#include "rt_math.h" #include "rt_math.h"
#include "EdgePreservingDecomposition.h" #include "EdgePreservingDecomposition.h"
/* Solves A x = b by the conjugate gradient method, where instead of feeding it the matrix A you feed it a function which /* Solves A x = b by the conjugate gradient method, where instead of feeding it the matrix A you feed it a function which
@ -407,7 +406,12 @@ float *EdgePreservingDecomposition::CreateBlur(float *Source, float Scale, float
if(UseBlurForEdgeStop) delete[] a; if(UseBlurForEdgeStop) delete[] a;
//Solve & return. //Solve & return.
A->CreateIncompleteCholeskyFactorization(1); //Fill-in of 1 seems to work really good. More doesn't really help and less hurts (slightly). bool success=A->CreateIncompleteCholeskyFactorization(1); //Fill-in of 1 seems to work really good. More doesn't really help and less hurts (slightly).
if(!success) {
fprintf(stderr,"Error: Tonemapping has failed.\n");
memset(Blur, 0, sizeof(float)*n); // On failure, set the blur to zero. This is subsequently exponentiated in CompressDynamicRange.
return Blur;
}
if(!UseBlurForEdgeStop) memcpy(Blur, Source, n*sizeof(float)); if(!UseBlurForEdgeStop) memcpy(Blur, Source, n*sizeof(float));
SparseConjugateGradient(A->PassThroughVectorProduct, Source, n, false, Blur, 0.0f, (void *)A, Iterates, A->PassThroughCholeskyBackSolve); SparseConjugateGradient(A->PassThroughVectorProduct, Source, n, false, Blur, 0.0f, (void *)A, Iterates, A->PassThroughCholeskyBackSolve);
A->KillIncompleteCholeskyFactorization(); A->KillIncompleteCholeskyFactorization();