diff options
Diffstat (limited to 'source/blender/compositor/operations/COM_TonemapOperation.cpp')
-rw-r--r-- | source/blender/compositor/operations/COM_TonemapOperation.cpp | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/source/blender/compositor/operations/COM_TonemapOperation.cpp b/source/blender/compositor/operations/COM_TonemapOperation.cpp new file mode 100644 index 00000000000..56830f4970d --- /dev/null +++ b/source/blender/compositor/operations/COM_TonemapOperation.cpp @@ -0,0 +1,171 @@ +/* + * Copyright 2011, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor: + * Jeroen Bakker + * Monique Dewanchand + */ + +#include "COM_TonemapOperation.h" +#include "BLI_math.h" +#include "BLI_utildefines.h" + + + +TonemapOperation::TonemapOperation(): NodeOperation() +{ + this->addInputSocket(COM_DT_COLOR, COM_SC_NO_RESIZE); + this->addOutputSocket(COM_DT_COLOR); + this->imageReader = NULL; + this->data = NULL; + this->cachedInstance = NULL; + this->setComplex(true); +} +void TonemapOperation::initExecution() +{ + this->imageReader = this->getInputSocketReader(0); + NodeOperation::initMutex(); +} + +void TonemapOperation::executePixel(float *color, int x, int y, MemoryBuffer *inputBuffers[], void * data) +{ + AvgLogLum * avg = (AvgLogLum*)data; + + float output[4]; + this->imageReader->read(output, x, y, inputBuffers, NULL); + output[0] *= avg->al; + output[1] *= avg->al; + output[2] *= avg->al; + float dr = output[0] + this->data->offset; + float dg = output[1] + this->data->offset; + float db = output[2] + this->data->offset; + output[0] /= ((dr == 0.f) ? 1.f : dr); + output[1] /= ((dg == 0.f) ? 1.f : dg); + output[2] /= ((db == 0.f) ? 1.f : db); + const float igm = avg->igm; + if (igm != 0.f) { + output[0] = pow((double)MAX2(output[0], 0.), (double)igm); + output[1] = pow((double)MAX2(output[1], 0.), (double)igm); + output[2] = pow((double)MAX2(output[2], 0.), (double)igm); + } + + color[0] = output[0]; + color[1] = output[1]; + color[2] = output[2]; + color[3] = output[3]; +} +void PhotoreceptorTonemapOperation::executePixel(float *color, int x, int y, MemoryBuffer *inputBuffers[], void * data) +{ + AvgLogLum * avg = (AvgLogLum*)data; + NodeTonemap *ntm = this->data; + + const float f = exp((double)-this->data->f); + const float m = (ntm->m > 0.f) ? ntm->m : (0.3f + 0.7f*pow((double)avg->auto_key, 1.4)); + const float ic = 1.f - ntm->c, ia = 1.f - ntm->a; + + float output[4]; + this->imageReader->read(output, x, y, inputBuffers, NULL); + + const float L = 0.212671f*output[0] + 0.71516f*output[1] + 0.072169f*output[2]; + float I_l = output[0] + ic*(L - output[0]); + float I_g = avg->cav[0] + ic*(avg->lav - avg->cav[0]); + float I_a = I_l + ia*(I_g - I_l); + output[0] /= (output[0] + pow((double)f*I_a, (double)m)); + I_l = output[1] + ic*(L - output[1]); + I_g = avg->cav[1] + ic*(avg->lav - avg->cav[1]); + I_a = I_l + ia*(I_g - I_l); + output[1] /= (output[1] + pow((double)f*I_a,(double)m)); + I_l = output[2] + ic*(L - output[2]); + I_g = avg->cav[2] + ic*(avg->lav - avg->cav[2]); + I_a = I_l + ia*(I_g - I_l); + output[2] /= (output[2] + pow((double)f*I_a, (double)m)); + + color[0] = output[0]; + color[1] = output[1]; + color[2] = output[2]; + color[3] = output[3]; +} + +void TonemapOperation::deinitExecution() +{ + this->imageReader = NULL; + if (this->cachedInstance) { + delete cachedInstance; + } + NodeOperation::deinitMutex(); +} + +bool TonemapOperation::determineDependingAreaOfInterest(rcti *input, ReadBufferOperation *readOperation, rcti *output) +{ + rcti imageInput; + + NodeOperation *operation = getInputOperation(0); + imageInput.xmax = operation->getWidth(); + imageInput.xmin = 0; + imageInput.ymax = operation->getHeight(); + imageInput.ymin = 0; + if (operation->determineDependingAreaOfInterest(&imageInput, readOperation, output) ) { + return true; + } + return false; +} + +void *TonemapOperation::initializeTileData(rcti *rect, MemoryBuffer **memoryBuffers) +{ + BLI_mutex_lock(getMutex()); + if (this->cachedInstance == NULL) { + MemoryBuffer *tile = (MemoryBuffer*)imageReader->initializeTileData(rect, memoryBuffers); + AvgLogLum *data = new AvgLogLum(); + + float * buffer = tile->getBuffer(); + + float lsum = 0; + int p = tile->getWidth() * tile->getHeight(); + float *bc = buffer; + float avl, maxl = -1e10f, minl = 1e10f; + const float sc = 1.f/(p); + float Lav = 0.f; + float cav[4] = {0.0f,0.0f,0.0f,0.0f}; + while (p--) { + float L = 0.212671f*bc[0] + 0.71516f*bc[1] + 0.072169f*bc[2]; + Lav += L; + cav[0] += bc[0]; + cav[1] += bc[1]; + cav[2] += bc[2]; + lsum += (float)log((double)MAX2(L, 0.0) + 1e-5); + maxl = (L > maxl) ? L : maxl; + minl = (L < minl) ? L : minl; + bc+=4; + } + data->lav = Lav * sc; + data->cav[0] = cav[0]*sc; + data->cav[1] = cav[1]*sc; + data->cav[2] = cav[2]*sc; + maxl = log((double)maxl + 1e-5); minl = log((double)minl + 1e-5f); avl = lsum*sc; + data->auto_key = (maxl > minl) ? ((maxl - avl) / (maxl - minl)) : 1.f; + float al = exp((double)avl); + data->al = (al == 0.f) ? 0.f : (this->data->key / al); + data->igm = (this->data->gamma==0.f) ? 1 : (1.f / this->data->gamma); + this->cachedInstance = data; + } + BLI_mutex_unlock(getMutex()); + return this->cachedInstance; +} + +void TonemapOperation::deinitializeTileData(rcti *rect, MemoryBuffer **memoryBuffers, void *data) +{ +} |