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Small speedup for fattal

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This commit is contained in:
heckflosse
2018-01-09 00:43:13 +01:00
parent 3fe9cae2c3
commit 9ce829e2f6
1 changed files with 4 additions and 4 deletions
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8
rtengine/tmo_fattal02.cc
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@@ -1131,7 +1131,7 @@ void ImProcFunctions::ToneMapFattal02 (Imagefloat *rgb)
float max_YThr = 0.f;
int max_xThr = 0, max_yThr = 0;
#ifdef _OPENMP
#pragma omp for nowait
#pragma omp for schedule(dynamic,16) nowait
#endif
for (int y = 0; y < h; y++) {
for (int x = 0; x < w; x++) {
@@ -1193,10 +1193,10 @@ void ImProcFunctions::ToneMapFattal02 (Imagefloat *rgb)
const float hr = float(h2) / float(h);
const float wr = float(w2) / float(w);
const float scale = std::max(L(max_x * wr + 1, max_y * hr + 1), epsilon) * (65535.f / Yr(max_x, max_y));
const float scale = 65535.f / std::max(L(max_x * wr + 1, max_y * hr + 1), epsilon) * (65535.f / Yr(max_x, max_y));
#ifdef _OPENMP
#pragma omp parallel for if(multiThread)
#pragma omp parallel for schedule(dynamic,16) if(multiThread)
#endif
for (int y = 0; y < h; y++) {
int yy = y * hr + 1;
@@ -1205,7 +1205,7 @@ void ImProcFunctions::ToneMapFattal02 (Imagefloat *rgb)
int xx = x * wr + 1;
float Y = Yr (x, y);
float l = std::max (L (xx, yy), epsilon) * (65535.f / Y) / scale;
float l = std::max (L (xx, yy), epsilon) * (scale / Y);
rgb->r (y, x) = std::max (rgb->r (y, x), 0.f) * l;
rgb->g (y, x) = std::max (rgb->g (y, x), 0.f) * l;
rgb->b (y, x) = std::max (rgb->b (y, x), 0.f) * l;