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ImageCopyChannels.cpp
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/* ***** BEGIN LICENSE BLOCK *****
* This file is part of Natron <https://natrongithub.github.io/>,
* (C) 2018-2021 The Natron developers
* (C) 2013-2018 INRIA and Alexandre Gauthier-Foichat
*
* Natron 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.
*
* Natron 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 Natron. If not, see <http://www.gnu.org/licenses/gpl-2.0.html>
* ***** END LICENSE BLOCK ***** */
// ***** BEGIN PYTHON BLOCK *****
// from <https://docs.python.org/3/c-api/intro.html#include-files>:
// "Since Python may define some pre-processor definitions which affect the standard headers on some systems, you must include Python.h before any standard headers are included."
#include <Python.h>
// ***** END PYTHON BLOCK *****
#include "Image.h"
#include <cassert>
#include <stdexcept>
#if !defined(SBK_RUN) && !defined(Q_MOC_RUN)
GCC_DIAG_UNUSED_LOCAL_TYPEDEFS_OFF
#include <boost/math/special_functions/fpclassify.hpp>
GCC_DIAG_UNUSED_LOCAL_TYPEDEFS_ON
#endif
#include <QtCore/QDebug>
#include "Engine/OSGLContext.h"
#include "Engine/GLShader.h"
// disable some warnings due to unused parameters
GCC_DIAG_OFF(unused-parameter)
# if ( ( __GNUC__ * 100) + __GNUC_MINOR__) >= 406
GCC_DIAG_OFF(unused-but-set-variable) // only on gcc >= 4.6
#endif
// NATRON_COPY_CHANNELS_UNPREMULT:
// Repremult R G and B if output is premult and alpha was modified.
// We do not consider it a good thing, since the user explicitly deselected the channels, and expects
// to get the values from input instead.
//#define NATRON_COPY_CHANNELS_UNPREMULT
NATRON_NAMESPACE_ENTER
template <typename PIX, int maxValue, int srcNComps, int dstNComps, bool doR, bool doG, bool doB, bool doA, bool premult, bool originalPremult, bool ignorePremult>
void
Image::copyUnProcessedChannelsForPremult(const std::bitset<4> processChannels,
const RectI& roi,
const ImagePtr& originalImage)
{
Q_UNUSED(processChannels); // silence warnings in release version
assert( ( (doR == !processChannels[0]) || !(dstNComps >= 2) ) &&
( (doG == !processChannels[1]) || !(dstNComps >= 2) ) &&
( (doB == !processChannels[2]) || !(dstNComps >= 3) ) &&
( (doA == !processChannels[3]) || !(dstNComps == 1 || dstNComps == 4) ) );
ReadAccess acc( originalImage.get() );
int dstRowElements = dstNComps * _bounds.width();
PIX* dst_pixels = (PIX*)pixelAt(roi.x1, roi.y1);
assert(dst_pixels);
assert(srcNComps == 1 || srcNComps == 4 || !originalPremult); // only A or RGBA can be premult
assert(dstNComps == 1 || dstNComps == 4 || !premult); // only A or RGBA can be premult
for ( int y = roi.y1; y < roi.y2; ++y, dst_pixels += (dstRowElements - (roi.x2 - roi.x1) * dstNComps) ) {
for (int x = roi.x1; x < roi.x2; ++x, dst_pixels += dstNComps) {
const PIX* src_pixels = originalImage ? (const PIX*)acc.pixelAt(x, y) : 0;
PIX srcA = src_pixels ? maxValue : 0; /* be opaque for anything that doesn't contain alpha */
if ( ( (srcNComps == 1) || (srcNComps == 4) ) && src_pixels ) {
# ifdef DEBUG_NAN
assert( !(boost::math::isnan)(src_pixels[srcNComps - 1]) ); // check for NaN
# endif
srcA = src_pixels[srcNComps - 1];
}
# ifdef NATRON_COPY_CHANNELS_UNPREMULT
// Repremult R G and B if output is premult and alpha was modified.
// We do not consider it a good thing, since the user explicitly deselected the channels, and expects
// to get the values from input instead.
# define DOCHANNEL(c) \
if (srcNComps == 1 || !src_pixels || c >= srcNComps) { \
dst_pixels[c] = 0; \
} \
else if (originalPremult) { \
if (srcA == 0) { \
dst_pixels[c] = src_pixels[c]; /* don't try to unpremult, just copy */ \
} \
else if (premult) { \
if (doA) { \
dst_pixels[c] = src_pixels[c]; /* dst will have same alpha as src, just copy src */ \
} \
else { \
dst_pixels[c] = (src_pixels[c] / (float)srcA) * dstAorig; /* dst keeps its alpha, unpremult src and repremult */ \
} \
} \
else { \
dst_pixels[c] = (src_pixels[c] / (float)srcA) * maxValue; /* dst is not premultiplied, unpremult src */ \
} \
} \
else { \
if (premult) { \
if (doA) { \
dst_pixels[c] = (src_pixels[c] * (1.f / maxValue)) * srcA; /* dst will have same alpha as src, just premult src with its alpha */ \
} \
else { \
dst_pixels[c] = (src_pixels[c] * (1.f / maxValue)) * dstAorig; /* dst keeps its alpha, premult src with dst's alpha */ \
} \
} \
else { \
dst_pixels[c] = src_pixels[c]; /* neither src nor dst is not premultiplied */ \
} \
}
PIX dstAorig = maxValue;
# else // !NATRON_COPY_CHANNELS_UNPREMULT
// Just copy the channels, after all if the user unchecked a channel,
// we do not want to change the values behind his back.
// Rather we display a warning in the GUI.
# define DOCHANNEL(c) dst_pixels[c] = (!src_pixels || c >= srcNComps) ? 0 : src_pixels[c];
# endif // !NATRON_COPY_CHANNELS_UNPREMULT
if ( (dstNComps == 1) || (dstNComps == 4) ) {
# ifdef DEBUG_NAN
assert( !(boost::math::isnan)(dst_pixels[dstNComps - 1]) ); // check for NaN
# endif
# ifdef NATRON_COPY_CHANNELS_UNPREMULT
dstAorig = dst_pixels[dstNComps - 1];
# endif // NATRON_COPY_CHANNELS_UNPREMULT
}
if (doR) {
# ifdef DEBUG_NAN
assert(!src_pixels || !(boost::math::isnan)(src_pixels[0]) ); // check for NaN
assert( !(boost::math::isnan)(dst_pixels[0]) ); // check for NaN
# endif
DOCHANNEL(0);
# ifdef DEBUG_NAN
assert( !(boost::math::isnan)(dst_pixels[0]) ); // check for NaN
# endif
}
if (doG) {
# ifdef DEBUG_NAN
assert(!src_pixels || !(boost::math::isnan)(src_pixels[1]) ); // check for NaN
assert( !(boost::math::isnan)(dst_pixels[1]) ); // check for NaN
# endif
DOCHANNEL(1);
# ifdef DEBUG_NAN
assert( !(boost::math::isnan)(dst_pixels[1]) ); // check for NaN
# endif
}
if (doB) {
# ifdef DEBUG_NAN
assert(!src_pixels || !(boost::math::isnan)(src_pixels[2]) ); // check for NaN
assert( !(boost::math::isnan)(dst_pixels[2]) ); // check for NaN
# endif
DOCHANNEL(2);
# ifdef DEBUG_NAN
assert( !(boost::math::isnan)(dst_pixels[2]) ); // check for NaN
# endif
}
if (doA) {
# ifdef NATRON_COPY_CHANNELS_UNPREMULT
if (premult) {
if (dstAorig != 0) {
// unpremult, then premult
if ( (dstNComps >= 2) && !doR ) {
dst_pixels[0] = (dst_pixels[0] / (float)dstAorig) * srcA;
# ifdef DEBUG_NAN
assert( !(boost::math::isnan)(dst_pixels[0]) ); // check for NaN
# endif
}
if ( (dstNComps >= 2) && !doG ) {
dst_pixels[1] = (dst_pixels[1] / (float)dstAorig) * srcA;
# ifdef DEBUG_NAN
assert( !(boost::math::isnan)(dst_pixels[1]) ); // check for NaN
# endif
}
if ( (dstNComps >= 2) && !doB ) {
dst_pixels[2] = (dst_pixels[2] / (float)dstAorig) * srcA;
# ifdef DEBUG_NAN
assert( !(boost::math::isnan)(dst_pixels[2]) ); // check for NaN
# endif
}
}
}
# endif // NATRON_COPY_CHANNELS_UNPREMULT
if ( (dstNComps == 1) || (dstNComps == 4) ) {
dst_pixels[dstNComps - 1] = srcA;
# ifdef DEBUG_NAN
assert( !(boost::math::isnan)(dst_pixels[dstNComps - 1]) ); // check for NaN
# endif
}
}
}
}
} // Image::copyUnProcessedChannelsForPremult
template <typename PIX, int maxValue, int srcNComps, int dstNComps, bool ignorePremult>
void
Image::copyUnProcessedChannelsForPremult(const bool premult,
const bool originalPremult,
const std::bitset<4> processChannels,
const RectI& roi,
const ImagePtr& originalImage)
{
ReadAccess acc( originalImage.get() );
int dstRowElements = dstNComps * _bounds.width();
PIX* dst_pixels = (PIX*)pixelAt(roi.x1, roi.y1);
assert(dst_pixels);
const bool doR = !processChannels[0] && (dstNComps >= 2);
const bool doG = !processChannels[1] && (dstNComps >= 2);
const bool doB = !processChannels[2] && (dstNComps >= 3);
const bool doA = !processChannels[3] && (dstNComps == 1 || dstNComps == 4);
assert(srcNComps == 4 || !originalPremult); // only RGBA can be premult
assert(dstNComps == 4 || !premult); // only RGBA can be premult
Q_UNUSED(premult);
Q_UNUSED(originalPremult);
for ( int y = roi.y1; y < roi.y2; ++y, dst_pixels += (dstRowElements - (roi.x2 - roi.x1) * dstNComps) ) {
for (int x = roi.x1; x < roi.x2; ++x, dst_pixels += dstNComps) {
const PIX* src_pixels = originalImage ? (const PIX*)acc.pixelAt(x, y) : 0;
PIX srcA = src_pixels ? maxValue : 0; /* be opaque for anything that doesn't contain alpha */
if ( ( (srcNComps == 1) || (srcNComps == 4) ) && src_pixels ) {
# ifdef DEBUG_NAN
assert( !(boost::math::isnan)(src_pixels[srcNComps - 1]) ); // check for NaN
# endif
srcA = src_pixels[srcNComps - 1];
}
# ifdef NATRON_COPY_CHANNELS_UNPREMULT
PIX dstAorig = maxValue;
# endif
if ( (dstNComps == 1) || (dstNComps == 4) ) {
# ifdef DEBUG_NAN
assert( !(boost::math::isnan)(dst_pixels[dstNComps - 1]) ); // check for NaN
# endif
# ifdef NATRON_COPY_CHANNELS_UNPREMULT
dstAorig = dst_pixels[dstNComps - 1];
# endif
}
if (doR) {
# ifdef DEBUG_NAN
assert(!src_pixels || !(boost::math::isnan)(src_pixels[0]) ); // check for NaN
assert( !(boost::math::isnan)(dst_pixels[0]) ); // check for NaN
# endif
DOCHANNEL(0);
# ifdef DEBUG_NAN
assert( !(boost::math::isnan)(dst_pixels[0]) ); // check for NaN
# endif
}
if (doG) {
# ifdef DEBUG_NAN
assert(!src_pixels || !(boost::math::isnan)(src_pixels[1]) ); // check for NaN
assert( !(boost::math::isnan)(dst_pixels[1]) ); // check for NaN
# endif
DOCHANNEL(1);
# ifdef DEBUG_NAN
assert( !(boost::math::isnan)(dst_pixels[1]) ); // check for NaN
# endif
}
if (doB) {
# ifdef DEBUG_NAN
assert(!src_pixels || !(boost::math::isnan)(src_pixels[2]) ); // check for NaN
assert( !(boost::math::isnan)(dst_pixels[2]) ); // check for NaN
# endif
DOCHANNEL(2);
# ifdef DEBUG_NAN
assert( !(boost::math::isnan)(dst_pixels[2]) ); // check for NaN
# endif
}
if (doA) {
# ifdef NATRON_COPY_CHANNELS_UNPREMULT
if (premult) {
if (dstAorig != 0) {
// unpremult, then premult
if ( (dstNComps >= 2) && !doR ) {
dst_pixels[0] = (dst_pixels[0] / (float)dstAorig) * srcA;
# ifdef DEBUG_NAN
assert( !(boost::math::isnan)(dst_pixels[0]) ); // check for NaN
# endif
}
if ( (dstNComps >= 2) && !doG ) {
dst_pixels[1] = (dst_pixels[1] / (float)dstAorig) * srcA;
# ifdef DEBUG_NAN
assert( !(boost::math::isnan)(dst_pixels[1]) ); // check for NaN
# endif
}
if ( (dstNComps >= 2) && !doB ) {
dst_pixels[2] = (dst_pixels[2] / (float)dstAorig) * srcA;
# ifdef DEBUG_NAN
assert( !(boost::math::isnan)(dst_pixels[2]) ); // check for NaN
# endif
}
}
}
# endif // NATRON_COPY_CHANNELS_UNPREMULT
// coverity[dead_error_line]
dst_pixels[dstNComps - 1] = srcA;
# ifdef DEBUG_NAN
assert( !(boost::math::isnan)(dst_pixels[dstNComps - 1]) ); // check for NaN
# endif
}
}
}
} // Image::copyUnProcessedChannelsForPremult
template <typename PIX, int maxValue, int srcNComps, int dstNComps, bool doR, bool doG, bool doB, bool doA>
void
Image::copyUnProcessedChannelsForChannels(const std::bitset<4> processChannels,
const bool premult,
const RectI& roi,
const ImagePtr& originalImage,
const bool originalPremult,
const bool ignorePremult)
{
assert( ( (doR == !processChannels[0]) || !(dstNComps >= 2) ) &&
( (doG == !processChannels[1]) || !(dstNComps >= 2) ) &&
( (doB == !processChannels[2]) || !(dstNComps >= 3) ) &&
( (doA == !processChannels[3]) || !(dstNComps == 1 || dstNComps == 4) ) );
if (premult) {
if (originalPremult) {
if (ignorePremult) {
copyUnProcessedChannelsForPremult<PIX, maxValue, srcNComps, dstNComps, doR, doG, doB, doA, true, true, true>(processChannels, roi, originalImage);
} else {
copyUnProcessedChannelsForPremult<PIX, maxValue, srcNComps, dstNComps, doR, doG, doB, doA, true, true, false>(processChannels, roi, originalImage);
}
} else {
if (ignorePremult) {
copyUnProcessedChannelsForPremult<PIX, maxValue, srcNComps, dstNComps, true>(true, false, processChannels, roi, originalImage);
} else {
copyUnProcessedChannelsForPremult<PIX, maxValue, srcNComps, dstNComps, false>(true, false, processChannels, roi, originalImage);
}
}
} else {
if (originalPremult) {
if (ignorePremult) {
copyUnProcessedChannelsForPremult<PIX, maxValue, srcNComps, dstNComps, true>(false, true, processChannels, roi, originalImage);
} else {
copyUnProcessedChannelsForPremult<PIX, maxValue, srcNComps, dstNComps, false>(false, true, processChannels, roi, originalImage);
}
} else {
if (ignorePremult) {
copyUnProcessedChannelsForPremult<PIX, maxValue, srcNComps, dstNComps, doR, doG, doB, doA, false, false, true>(processChannels, roi, originalImage);
} else {
copyUnProcessedChannelsForPremult<PIX, maxValue, srcNComps, dstNComps, doR, doG, doB, doA, false, false, false>(processChannels, roi, originalImage);
}
}
}
}
template <typename PIX, int maxValue, int srcNComps, int dstNComps>
void
Image::copyUnProcessedChannelsForChannels(const std::bitset<4> processChannels,
const bool premult,
const RectI& roi,
const ImagePtr& originalImage,
const bool originalPremult,
const bool ignorePremult)
{
if (ignorePremult) {
copyUnProcessedChannelsForPremult<PIX, maxValue, srcNComps, dstNComps, true>(premult, originalPremult, processChannels, roi, originalImage);
} else {
copyUnProcessedChannelsForPremult<PIX, maxValue, srcNComps, dstNComps, false>(premult, originalPremult, processChannels, roi, originalImage);
}
}
template <typename PIX, int maxValue, int srcNComps, int dstNComps>
void
Image::copyUnProcessedChannelsForComponents(const bool premult,
const RectI& roi,
const std::bitset<4> processChannels,
const ImagePtr& originalImage,
const bool originalPremult,
const bool ignorePremult)
{
const bool doR = !processChannels[0] && (dstNComps >= 2);
const bool doG = !processChannels[1] && (dstNComps >= 2);
const bool doB = !processChannels[2] && (dstNComps >= 3);
const bool doA = !processChannels[3] && (dstNComps == 1 || dstNComps == 4);
if (dstNComps == 1) {
if (doA) {
copyUnProcessedChannelsForChannels<PIX, maxValue, srcNComps, dstNComps, false, false, false, true>(processChannels, premult, roi, originalImage, originalPremult, ignorePremult); // RGB were processed, copy A
} else {
copyUnProcessedChannelsForChannels<PIX, maxValue, srcNComps, dstNComps, false, false, false, false>(processChannels, premult, roi, originalImage, originalPremult, ignorePremult); // RGBA were processed, only do premult
}
} else {
assert(2 <= dstNComps && dstNComps <= 4);
if (doR) {
if (doG) {
if ( (dstNComps >= 3) && doB ) {
if ( (dstNComps >= 4) && doA ) {
copyUnProcessedChannelsForChannels<PIX, maxValue, srcNComps, dstNComps, true, true, true, true>(processChannels, premult, roi, originalImage, originalPremult, ignorePremult); // none were processed, only do premult
} else {
copyUnProcessedChannelsForChannels<PIX, maxValue, srcNComps, dstNComps, true, true, true, false>(processChannels, premult, roi, originalImage, originalPremult, ignorePremult); // A was processed
}
} else {
if ( (dstNComps >= 4) && doA ) {
copyUnProcessedChannelsForChannels<PIX, maxValue, srcNComps, dstNComps, true, true, false, true>(processChannels, premult, roi, originalImage, originalPremult, ignorePremult); // B was processed
} else {
copyUnProcessedChannelsForChannels<PIX, maxValue, srcNComps, dstNComps>(/*true, true, false, false, */ processChannels, premult, roi, originalImage, originalPremult, ignorePremult); // BA were processed (rare)
}
}
} else {
if ( (dstNComps >= 3) && doB ) {
if ( (dstNComps >= 4) && doA ) {
copyUnProcessedChannelsForChannels<PIX, maxValue, srcNComps, dstNComps, true, false, true, true>(processChannels, premult, roi, originalImage, originalPremult, ignorePremult); // G was processed
} else {
copyUnProcessedChannelsForChannels<PIX, maxValue, srcNComps, dstNComps>(/*true, false, true, false, */ processChannels, premult, roi, originalImage, originalPremult, ignorePremult); // GA were processed (rare)
}
} else {
//if (dstNComps >= 4 && doA) {
copyUnProcessedChannelsForChannels<PIX, maxValue, srcNComps, dstNComps>(/*true, false, false, true, */ processChannels, premult, roi, originalImage, originalPremult, ignorePremult); // GB were processed (rare)
//} else {
// copyUnProcessedChannelsForChannels<PIX, maxValue, srcNComps, dstNComps>(/*true, false, false, false, */processChannels, premult, roi, originalImage, originalPremult, ignorePremult); // GBA were processed (rare)
//}
}
}
} else {
if (doG) {
if ( (dstNComps >= 3) && doB ) {
if ( (dstNComps >= 4) && doA ) {
copyUnProcessedChannelsForChannels<PIX, maxValue, srcNComps, dstNComps, false, true, true, true>(processChannels, premult, roi, originalImage, originalPremult, ignorePremult); // R was processed
} else {
copyUnProcessedChannelsForChannels<PIX, maxValue, srcNComps, dstNComps>(/*false, true, true, false, */ processChannels, premult, roi, originalImage, originalPremult, ignorePremult); // RA were processed (rare)
}
} else {
//if (dstNComps >= 4 && doA) {
copyUnProcessedChannelsForChannels<PIX, maxValue, srcNComps, dstNComps>(/*false, true, false, true, */ processChannels, premult, roi, originalImage, originalPremult, ignorePremult); // RB were processed (rare)
//} else {
// copyUnProcessedChannelsForChannels<PIX, maxValue, srcNComps, dstNComps>(/*false, true, false, false, */processChannels, premult, roi, originalImage, originalPremult, ignorePremult); // RBA were processed (rare)
//}
}
} else {
if ( (dstNComps >= 3) && doB ) {
//if (dstNComps >= 4 && doA) {
copyUnProcessedChannelsForChannels<PIX, maxValue, srcNComps, dstNComps>(/*false, false, true, true, */ processChannels, premult, roi, originalImage, originalPremult, ignorePremult); // RG were processed (rare)
//} else {
// copyUnProcessedChannelsForChannels<PIX, maxValue, srcNComps, dstNComps>(/*false, false, true, false, */processChannels, premult, roi, originalImage, originalPremult, ignorePremult); // RGA were processed (rare)
//}
} else {
if ( (dstNComps >= 4) && doA ) {
copyUnProcessedChannelsForChannels<PIX, maxValue, srcNComps, dstNComps, false, false, false, true>(processChannels, premult, roi, originalImage, originalPremult, ignorePremult); // RGB were processed
} else {
copyUnProcessedChannelsForChannels<PIX, maxValue, srcNComps, dstNComps, false, false, false, false>(processChannels, premult, roi, originalImage, originalPremult, ignorePremult); // RGBA were processed
}
}
}
}
}
} // Image::copyUnProcessedChannelsForComponents
template <typename PIX, int maxValue>
void
Image::copyUnProcessedChannelsForDepth(const bool premult,
const RectI& roi,
const std::bitset<4> processChannels,
const ImagePtr& originalImage,
const bool originalPremult,
bool ignorePremult)
{
int dstNComps = getComponents().getNumComponents();
int srcNComps = originalImage ? originalImage->getComponents().getNumComponents() : 0;
switch (dstNComps) {
case 1:
switch (srcNComps) {
case 0:
copyUnProcessedChannelsForComponents<PIX, maxValue, 0, 1>(premult, roi, processChannels, originalImage, originalPremult, ignorePremult);
break;
case 1:
copyUnProcessedChannelsForComponents<PIX, maxValue, 1, 1>(premult, roi, processChannels, originalImage, originalPremult, ignorePremult);
break;
case 2:
copyUnProcessedChannelsForComponents<PIX, maxValue, 2, 1>(premult, roi, processChannels, originalImage, originalPremult, ignorePremult);
break;
case 3:
copyUnProcessedChannelsForComponents<PIX, maxValue, 3, 1>(premult, roi, processChannels, originalImage, originalPremult, ignorePremult);
break;
case 4:
copyUnProcessedChannelsForComponents<PIX, maxValue, 4, 1>(premult, roi, processChannels, originalImage, originalPremult, ignorePremult);
break;
default:
assert(false);
break;
}
break;
case 2:
switch (srcNComps) {
case 0:
copyUnProcessedChannelsForComponents<PIX, maxValue, 0, 2>(premult, roi, processChannels, originalImage, originalPremult, ignorePremult);
break;
case 1:
copyUnProcessedChannelsForComponents<PIX, maxValue, 1, 2>(premult, roi, processChannels, originalImage, originalPremult, ignorePremult);
break;
case 2:
copyUnProcessedChannelsForComponents<PIX, maxValue, 2, 2>(premult, roi, processChannels, originalImage, originalPremult, ignorePremult);
break;
case 3:
copyUnProcessedChannelsForComponents<PIX, maxValue, 3, 2>(premult, roi, processChannels, originalImage, originalPremult, ignorePremult);
break;
case 4:
copyUnProcessedChannelsForComponents<PIX, maxValue, 4, 2>(premult, roi, processChannels, originalImage, originalPremult, ignorePremult);
break;
default:
assert(false);
break;
}
break;
case 3:
switch (srcNComps) {
case 0:
copyUnProcessedChannelsForComponents<PIX, maxValue, 0, 3>(premult, roi, processChannels, originalImage, originalPremult, ignorePremult);
break;
case 1:
copyUnProcessedChannelsForComponents<PIX, maxValue, 1, 3>(premult, roi, processChannels, originalImage, originalPremult, ignorePremult);
break;
case 2:
copyUnProcessedChannelsForComponents<PIX, maxValue, 2, 3>(premult, roi, processChannels, originalImage, originalPremult, ignorePremult);
break;
case 3:
copyUnProcessedChannelsForComponents<PIX, maxValue, 3, 3>(premult, roi, processChannels, originalImage, originalPremult, ignorePremult);
break;
case 4:
copyUnProcessedChannelsForComponents<PIX, maxValue, 4, 3>(premult, roi, processChannels, originalImage, originalPremult, ignorePremult);
break;
default:
assert(false);
break;
}
break;
case 4:
switch (srcNComps) {
case 0:
copyUnProcessedChannelsForComponents<PIX, maxValue, 0, 4>(premult, roi, processChannels, originalImage, originalPremult, ignorePremult);
break;
case 1:
copyUnProcessedChannelsForComponents<PIX, maxValue, 1, 4>(premult, roi, processChannels, originalImage, originalPremult, ignorePremult);
break;
case 2:
copyUnProcessedChannelsForComponents<PIX, maxValue, 2, 4>(premult, roi, processChannels, originalImage, originalPremult, ignorePremult);
break;
case 3:
copyUnProcessedChannelsForComponents<PIX, maxValue, 3, 4>(premult, roi, processChannels, originalImage, originalPremult, ignorePremult);
break;
case 4:
copyUnProcessedChannelsForComponents<PIX, maxValue, 4, 4>(premult, roi, processChannels, originalImage, originalPremult, ignorePremult);
break;
default:
assert(false);
break;
}
break;
default:
assert(false);
break;
} // switch
} // Image::copyUnProcessedChannelsForDepth
bool
Image::canCallCopyUnProcessedChannels(const std::bitset<4> processChannels) const
{
int numComp = getComponents().getNumComponents();
if (numComp == 0) {
return false;
}
if ( (numComp == 1) && processChannels[3] ) { // 1 component is alpha
return false;
} else if ( (numComp == 2) && processChannels[0] && processChannels[1] ) {
return false;
} else if ( (numComp == 3) && processChannels[0] && processChannels[1] && processChannels[2] ) {
return false;
} else if ( (numComp == 4) && processChannels[0] && processChannels[1] && processChannels[2] && processChannels[3] ) {
return false;
}
return true;
}
void
Image::copyUnProcessedChannels(const RectI& roi,
const ImagePremultiplicationEnum outputPremult,
const ImagePremultiplicationEnum originalImagePremult,
const std::bitset<4> processChannels,
const ImagePtr& originalImage,
bool ignorePremult,
const OSGLContextPtr& glContext)
{
int numComp = getComponents().getNumComponents();
if (numComp == 0) {
return;
}
if ( (numComp == 1) && processChannels[3] ) { // 1 component is alpha
return;
} else if ( (numComp == 2) && processChannels[0] && processChannels[1] ) {
return;
} else if ( (numComp == 3) && processChannels[0] && processChannels[1] && processChannels[2] ) {
return;
} else if ( (numComp == 4) && processChannels[0] && processChannels[1] && processChannels[2] && processChannels[3] ) {
return;
}
if ( originalImage && ( getMipMapLevel() != originalImage->getMipMapLevel() ) ) {
qDebug() << "WARNING: attempting to call copyUnProcessedChannels on images with different mipMapLevel";
return;
}
QWriteLocker k(&_entryLock);
assert( !originalImage || getBitDepth() == originalImage->getBitDepth() );
RectI srcRoi;
roi.intersect(_bounds, &srcRoi);
if (getStorageMode() == eStorageModeGLTex) {
assert(glContext);
assert(originalImage->getStorageMode() == eStorageModeGLTex);
GLShaderPtr shader = glContext->getOrCreateCopyUnprocessedChannelsShader(processChannels[0], processChannels[1], processChannels[2], processChannels[3]);
assert(shader);
GLuint fboID = glContext->getFBOId();
glBindFramebuffer(GL_FRAMEBUFFER, fboID);
int target = getGLTextureTarget();
glEnable(target);
glActiveTexture(GL_TEXTURE0);
glBindTexture( target, getGLTextureID() );
glTexParameteri (target, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri (target, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri (target, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri (target, GL_TEXTURE_WRAP_T, GL_REPEAT);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, target, getGLTextureID(), 0 /*LoD*/);
glCheckFramebufferError();
glCheckError();
glActiveTexture(GL_TEXTURE1);
glBindTexture( target, originalImage->getGLTextureID() );
glTexParameteri (target, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri (target, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri (target, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri (target, GL_TEXTURE_WRAP_T, GL_REPEAT);
shader->bind();
shader->setUniform("originalImageTex", 1);
shader->setUniform("outputImageTex", 0);
OfxRGBAColourF procChannelsV = {
processChannels[0] ? 1.f : 0.f,
processChannels[1] ? 1.f : 0.f,
processChannels[2] ? 1.f : 0.f,
processChannels[3] ? 1.f : 0.f
};
shader->setUniform("processChannels", procChannelsV);
applyTextureMapping(_bounds, srcRoi);
shader->unbind();
glCheckError();
glBindTexture(target, 0);
glActiveTexture(GL_TEXTURE0);
glBindTexture(target, 0);
glCheckError();
return;
}
bool premult = (outputPremult == eImagePremultiplicationPremultiplied);
bool originalPremult = (originalImagePremult == eImagePremultiplicationPremultiplied);
switch ( getBitDepth() ) {
case eImageBitDepthByte:
copyUnProcessedChannelsForDepth<unsigned char, 255>(premult, roi, processChannels, originalImage, originalPremult, ignorePremult);
break;
case eImageBitDepthShort:
copyUnProcessedChannelsForDepth<unsigned short, 65535>(premult, roi, processChannels, originalImage, originalPremult, ignorePremult);
break;
case eImageBitDepthFloat:
copyUnProcessedChannelsForDepth<float, 1>(premult, roi, processChannels, originalImage, originalPremult, ignorePremult);
break;
default:
return;
}
} // copyUnProcessedChannels
NATRON_NAMESPACE_EXIT