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/*
* 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_GaussianXBlurOperation.h"
#include "BLI_math.h"
#include "MEM_guardedalloc.h"
extern "C" {
# include "RE_pipeline.h"
}
GaussianXBlurOperation::GaussianXBlurOperation() : BlurBaseOperation(COM_DT_COLOR)
{
this->m_gausstab = NULL;
#ifdef __SSE2__
this->m_gausstab_sse = NULL;
#endif
this->m_filtersize = 0;
}
void *GaussianXBlurOperation::initializeTileData(rcti *rect)
{
lockMutex();
if (!this->m_sizeavailable) {
updateGauss();
}
void *buffer = getInputOperation(0)->initializeTileData(NULL);
unlockMutex();
return buffer;
}
void GaussianXBlurOperation::initExecution()
{
BlurBaseOperation::initExecution();
initMutex();
if (this->m_sizeavailable) {
float rad = max_ff(m_size * m_data.sizex, 0.0f);
m_filtersize = min_ii(ceil(rad), MAX_GAUSSTAB_RADIUS);
/* TODO(sergey): De-duplicate with the case below and Y blur. */
this->m_gausstab = BlurBaseOperation::make_gausstab(rad, m_filtersize);
#ifdef __SSE2__
this->m_gausstab_sse = BlurBaseOperation::convert_gausstab_sse(this->m_gausstab,
rad,
m_filtersize);
#endif
}
}
void GaussianXBlurOperation::updateGauss()
{
if (this->m_gausstab == NULL) {
updateSize();
float rad = max_ff(m_size * m_data.sizex, 0.0f);
m_filtersize = min_ii(ceil(rad), MAX_GAUSSTAB_RADIUS);
this->m_gausstab = BlurBaseOperation::make_gausstab(rad, m_filtersize);
#ifdef __SSE2__
this->m_gausstab_sse = BlurBaseOperation::convert_gausstab_sse(this->m_gausstab,
rad,
m_filtersize);
#endif
}
}
void GaussianXBlurOperation::executePixel(float output[4], int x, int y, void *data)
{
float color_accum[4] = {0.0f, 0.0f, 0.0f, 0.0f};
float multiplier_accum = 0.0f;
MemoryBuffer *inputBuffer = (MemoryBuffer *)data;
float *buffer = inputBuffer->getBuffer();
int bufferwidth = inputBuffer->getWidth();
int bufferstartx = inputBuffer->getRect()->xmin;
int bufferstarty = inputBuffer->getRect()->ymin;
rcti &rect = *inputBuffer->getRect();
int xmin = max_ii(x - m_filtersize, rect.xmin);
int xmax = min_ii(x + m_filtersize + 1, rect.xmax);
int ymin = max_ii(y, rect.ymin);
int step = getStep();
int offsetadd = getOffsetAdd();
int bufferindex = ((xmin - bufferstartx) * 4) + ((ymin - bufferstarty) * 4 * bufferwidth);
#ifdef __SSE2__
__m128 accum_r = _mm_load_ps(color_accum);
for (int nx = xmin, index = (xmin - x) + this->m_filtersize; nx < xmax; nx += step, index += step) {
__m128 reg_a = _mm_load_ps(&buffer[bufferindex]);
reg_a = _mm_mul_ps(reg_a, this->m_gausstab_sse[index]);
accum_r = _mm_add_ps(accum_r, reg_a);
multiplier_accum += this->m_gausstab[index];
bufferindex += offsetadd;
}
_mm_store_ps(color_accum, accum_r);
#else
for (int nx = xmin, index = (xmin - x) + this->m_filtersize; nx < xmax; nx += step, index += step) {
const float multiplier = this->m_gausstab[index];
madd_v4_v4fl(color_accum, &buffer[bufferindex], multiplier);
multiplier_accum += multiplier;
bufferindex += offsetadd;
}
#endif
mul_v4_v4fl(output, color_accum, 1.0f / multiplier_accum);
}
void GaussianXBlurOperation::deinitExecution()
{
BlurBaseOperation::deinitExecution();
if (this->m_gausstab) {
MEM_freeN(this->m_gausstab);
this->m_gausstab = NULL;
}
#ifdef __SSE2__
if (this->m_gausstab_sse) {
MEM_freeN(this->m_gausstab_sse);
this->m_gausstab_sse = NULL;
}
#endif
deinitMutex();
}
bool GaussianXBlurOperation::determineDependingAreaOfInterest(rcti *input, ReadBufferOperation *readOperation, rcti *output)
{
rcti newInput;
if (!this->m_sizeavailable) {
rcti sizeInput;
sizeInput.xmin = 0;
sizeInput.ymin = 0;
sizeInput.xmax = 5;
sizeInput.ymax = 5;
NodeOperation *operation = this->getInputOperation(1);
if (operation->determineDependingAreaOfInterest(&sizeInput, readOperation, output)) {
return true;
}
}
{
if (this->m_sizeavailable && this->m_gausstab != NULL) {
newInput.xmax = input->xmax + this->m_filtersize + 1;
newInput.xmin = input->xmin - this->m_filtersize - 1;
newInput.ymax = input->ymax;
newInput.ymin = input->ymin;
}
else {
newInput.xmax = this->getWidth();
newInput.xmin = 0;
newInput.ymax = this->getHeight();
newInput.ymin = 0;
}
return NodeOperation::determineDependingAreaOfInterest(&newInput, readOperation, output);
}
}
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