blender/intern/opencolorio/ocio_impl.cc

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/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* 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.
*
* The Original Code is Copyright (C) 2012 Blender Foundation.
* All rights reserved.
*
* Contributor(s): Xavier Thomas
* Lukas Toene,
* Sergey Sharybin
*
* ***** END GPL LICENSE BLOCK *****
*/
#include <iostream>
Implement GPU-side display transform for clip editor Implemented using GLSL API from OpenColorIO library and some general functions were added to it's c-api: - OCIO_setupGLSLDraw prepares OpenGL context for GPU-based transformation for a giver processor. This function compiles and links shader, sets up it's argument. After this transformation would be applied on an image displaying as a 2D texture. So, glaDrawPixelsTex called after OCIO_setupGLSLDraw will do a proper color space transform. - OCIO_finishGLSLDraw restores OpenGL context after all color-managed display is over. - OCIO_freeOGLState frees allocated state structure used for cacheing some GLSL-related stuff. There're some utility functions in IMB_colormanagent which are basically proxies to lower level OCIO functions but which could be used from any place in blender. Chacheing of movie clip frame on GPU is also removed now, and either glaDrawPixelsTex or glaDrawPixelsAuto are used for display now. This is so no code duplication happens now and no large textures are lurking around in GPU memory. Known issues: - Texture buffer and GLSL are no longer checking for video card capabilities, possibly could lead to some artifacts on crappy drivers/cards. - Only float buffers are displaying using GLSL, byte buffers will still use fallback display method. This is to be addressed later. - If RGB curves are used as a part of display transform, GLSL display will also be disabled. This is also thing to be solved later. Additional changes: - glaDrawPixelsTexScaled will now use RGBA16F as an internal format of storing textures when it's used to draw float buffer. This is needed so LUT are applied without precision loss.
2013-03-29 16:02:27 +00:00
#include <sstream>
#include <string.h>
Implement GPU-side display transform for clip editor Implemented using GLSL API from OpenColorIO library and some general functions were added to it's c-api: - OCIO_setupGLSLDraw prepares OpenGL context for GPU-based transformation for a giver processor. This function compiles and links shader, sets up it's argument. After this transformation would be applied on an image displaying as a 2D texture. So, glaDrawPixelsTex called after OCIO_setupGLSLDraw will do a proper color space transform. - OCIO_finishGLSLDraw restores OpenGL context after all color-managed display is over. - OCIO_freeOGLState frees allocated state structure used for cacheing some GLSL-related stuff. There're some utility functions in IMB_colormanagent which are basically proxies to lower level OCIO functions but which could be used from any place in blender. Chacheing of movie clip frame on GPU is also removed now, and either glaDrawPixelsTex or glaDrawPixelsAuto are used for display now. This is so no code duplication happens now and no large textures are lurking around in GPU memory. Known issues: - Texture buffer and GLSL are no longer checking for video card capabilities, possibly could lead to some artifacts on crappy drivers/cards. - Only float buffers are displaying using GLSL, byte buffers will still use fallback display method. This is to be addressed later. - If RGB curves are used as a part of display transform, GLSL display will also be disabled. This is also thing to be solved later. Additional changes: - glaDrawPixelsTexScaled will now use RGBA16F as an internal format of storing textures when it's used to draw float buffer. This is needed so LUT are applied without precision loss.
2013-03-29 16:02:27 +00:00
#ifdef __APPLE__
#include <OpenGL/gl.h>
#include <OpenGL/glu.h>
#else
#include <GL/glew.h>
#endif
#include <OpenColorIO/OpenColorIO.h>
using namespace OCIO_NAMESPACE;
#include "MEM_guardedalloc.h"
#include "ocio_impl.h"
#if !defined(WITH_ASSERT_ABORT)
# define OCIO_abort()
#else
# include <stdlib.h>
# define OCIO_abort() abort()
#endif
#if defined(_MSC_VER)
# define __func__ __FUNCTION__
#endif
static void OCIO_reportError(const char *err)
{
std::cerr << "OpenColorIO Error: " << err << std::endl;
OCIO_abort();
}
static void OCIO_reportException(Exception &exception)
{
OCIO_reportError(exception.what());
}
OCIO_ConstConfigRcPtr *OCIOImpl::getCurrentConfig(void)
{
ConstConfigRcPtr *config = OBJECT_GUARDED_NEW(ConstConfigRcPtr);
try {
*config = GetCurrentConfig();
if (*config)
return (OCIO_ConstConfigRcPtr *) config;
}
catch (Exception &exception) {
OCIO_reportException(exception);
}
OBJECT_GUARDED_DELETE(config, ConstConfigRcPtr);
return NULL;
}
void OCIOImpl::setCurrentConfig(const OCIO_ConstConfigRcPtr *config)
{
try {
SetCurrentConfig(*(ConstConfigRcPtr *) config);
}
catch (Exception &exception) {
OCIO_reportException(exception);
}
}
OCIO_ConstConfigRcPtr *OCIOImpl::configCreateFromEnv(void)
{
ConstConfigRcPtr *config = OBJECT_GUARDED_NEW(ConstConfigRcPtr);
try {
*config = Config::CreateFromEnv();
if (*config)
return (OCIO_ConstConfigRcPtr *) config;
}
catch (Exception &exception) {
OCIO_reportException(exception);
}
OBJECT_GUARDED_DELETE(config, ConstConfigRcPtr);
return NULL;
}
OCIO_ConstConfigRcPtr *OCIOImpl::configCreateFromFile(const char *filename)
{
ConstConfigRcPtr *config = OBJECT_GUARDED_NEW(ConstConfigRcPtr);
try {
*config = Config::CreateFromFile(filename);
if (*config)
return (OCIO_ConstConfigRcPtr *) config;
}
catch (Exception &exception) {
OCIO_reportException(exception);
}
OBJECT_GUARDED_DELETE(config, ConstConfigRcPtr);
return NULL;
}
void OCIOImpl::configRelease(OCIO_ConstConfigRcPtr *config)
{
OBJECT_GUARDED_DELETE((ConstConfigRcPtr *) config, ConstConfigRcPtr);
}
int OCIOImpl::configGetNumColorSpaces(OCIO_ConstConfigRcPtr *config)
{
try {
return (*(ConstConfigRcPtr *) config)->getNumColorSpaces();
}
catch (Exception &exception) {
OCIO_reportException(exception);
}
return 0;
}
const char *OCIOImpl::configGetColorSpaceNameByIndex(OCIO_ConstConfigRcPtr *config, int index)
{
try {
return (*(ConstConfigRcPtr *) config)->getColorSpaceNameByIndex(index);
}
catch (Exception &exception) {
OCIO_reportException(exception);
}
return NULL;
}
OCIO_ConstColorSpaceRcPtr *OCIOImpl::configGetColorSpace(OCIO_ConstConfigRcPtr *config, const char *name)
{
ConstColorSpaceRcPtr *cs = OBJECT_GUARDED_NEW(ConstColorSpaceRcPtr);
try {
*cs = (*(ConstConfigRcPtr *) config)->getColorSpace(name);
if (*cs)
return (OCIO_ConstColorSpaceRcPtr *) cs;
}
catch (Exception &exception) {
OCIO_reportException(exception);
}
OBJECT_GUARDED_DELETE(cs, ConstColorSpaceRcPtr);
return NULL;
}
int OCIOImpl::configGetIndexForColorSpace(OCIO_ConstConfigRcPtr *config, const char *name)
{
try {
return (*(ConstConfigRcPtr *) config)->getIndexForColorSpace(name);
}
catch (Exception &exception) {
OCIO_reportException(exception);
}
return -1;
}
const char *OCIOImpl::configGetDefaultDisplay(OCIO_ConstConfigRcPtr *config)
{
try {
return (*(ConstConfigRcPtr *) config)->getDefaultDisplay();
}
catch (Exception &exception) {
OCIO_reportException(exception);
}
return NULL;
}
int OCIOImpl::configGetNumDisplays(OCIO_ConstConfigRcPtr* config)
{
try {
return (*(ConstConfigRcPtr *) config)->getNumDisplays();
}
catch (Exception &exception) {
OCIO_reportException(exception);
}
return 0;
}
const char *OCIOImpl::configGetDisplay(OCIO_ConstConfigRcPtr *config, int index)
{
try {
return (*(ConstConfigRcPtr *) config)->getDisplay(index);
}
catch (Exception &exception) {
OCIO_reportException(exception);
}
return NULL;
}
const char *OCIOImpl::configGetDefaultView(OCIO_ConstConfigRcPtr *config, const char *display)
{
try {
return (*(ConstConfigRcPtr *) config)->getDefaultView(display);
}
catch (Exception &exception) {
OCIO_reportException(exception);
}
return NULL;
}
int OCIOImpl::configGetNumViews(OCIO_ConstConfigRcPtr *config, const char *display)
{
try {
return (*(ConstConfigRcPtr *) config)->getNumViews(display);
}
catch (Exception &exception) {
OCIO_reportException(exception);
}
return 0;
}
const char *OCIOImpl::configGetView(OCIO_ConstConfigRcPtr *config, const char *display, int index)
{
try {
return (*(ConstConfigRcPtr *) config)->getView(display, index);
}
catch (Exception &exception) {
OCIO_reportException(exception);
}
return NULL;
}
const char *OCIOImpl::configGetDisplayColorSpaceName(OCIO_ConstConfigRcPtr *config, const char *display, const char *view)
{
try {
return (*(ConstConfigRcPtr *) config)->getDisplayColorSpaceName(display, view);
}
catch (Exception &exception) {
OCIO_reportException(exception);
}
return NULL;
}
int OCIOImpl::configGetNumLooks(OCIO_ConstConfigRcPtr *config)
{
try {
return (*(ConstConfigRcPtr *) config)->getNumLooks();
}
catch (Exception &exception) {
OCIO_reportException(exception);
}
return 0;
}
const char *OCIOImpl::configGetLookNameByIndex(OCIO_ConstConfigRcPtr *config, int index)
{
try {
return (*(ConstConfigRcPtr *) config)->getLookNameByIndex(index);
}
catch (Exception &exception) {
OCIO_reportException(exception);
}
return NULL;
}
OCIO_ConstLookRcPtr *OCIOImpl::configGetLook(OCIO_ConstConfigRcPtr *config, const char *name)
{
ConstLookRcPtr *look = OBJECT_GUARDED_NEW(ConstLookRcPtr);
try {
*look = (*(ConstConfigRcPtr *) config)->getLook(name);
if (*look)
return (OCIO_ConstLookRcPtr *) look;
}
catch (Exception &exception) {
OCIO_reportException(exception);
}
OBJECT_GUARDED_DELETE(look, ConstLookRcPtr);
return NULL;
}
const char *OCIOImpl::lookGetProcessSpace(OCIO_ConstLookRcPtr *look)
{
return (*(ConstLookRcPtr *) look)->getProcessSpace();
}
void OCIOImpl::lookRelease(OCIO_ConstLookRcPtr *look)
{
OBJECT_GUARDED_DELETE((ConstLookRcPtr *) look, ConstLookRcPtr);
}
int OCIOImpl::colorSpaceIsInvertible(OCIO_ConstColorSpaceRcPtr *cs_)
{
ConstColorSpaceRcPtr *cs = (ConstColorSpaceRcPtr *) cs_;
const char *family = (*cs)->getFamily();
if (!strcmp(family, "rrt") || !strcmp(family, "display")) {
/* assume display and rrt transformations are not invertible
* in fact some of them could be, but it doesn't make much sense to allow use them as invertible
*/
return false;
}
if ((*cs)->isData()) {
/* data color spaces don't have transformation at all */
return true;
}
if ((*cs)->getTransform(COLORSPACE_DIR_TO_REFERENCE)) {
/* if there's defined transform to reference space, color space could be converted to scene linear */
return true;
}
return true;
}
int OCIOImpl::colorSpaceIsData(OCIO_ConstColorSpaceRcPtr *cs)
{
return (*(ConstColorSpaceRcPtr *) cs)->isData();
}
void OCIOImpl::colorSpaceRelease(OCIO_ConstColorSpaceRcPtr *cs)
{
OBJECT_GUARDED_DELETE((ConstColorSpaceRcPtr *) cs, ConstColorSpaceRcPtr);
}
OCIO_ConstProcessorRcPtr *OCIOImpl::configGetProcessorWithNames(OCIO_ConstConfigRcPtr *config, const char *srcName, const char *dstName)
{
ConstProcessorRcPtr *p = OBJECT_GUARDED_NEW(ConstProcessorRcPtr);
try {
*p = (*(ConstConfigRcPtr *) config)->getProcessor(srcName, dstName);
if (*p)
return (OCIO_ConstProcessorRcPtr *) p;
}
catch (Exception &exception) {
OCIO_reportException(exception);
}
OBJECT_GUARDED_DELETE(p, ConstProcessorRcPtr);
return 0;
}
OCIO_ConstProcessorRcPtr *OCIOImpl::configGetProcessor(OCIO_ConstConfigRcPtr *config, OCIO_ConstTransformRcPtr *transform)
{
ConstProcessorRcPtr *p = OBJECT_GUARDED_NEW(ConstProcessorRcPtr);
try {
*p = (*(ConstConfigRcPtr *) config)->getProcessor(*(ConstTransformRcPtr *) transform);
if (*p)
return (OCIO_ConstProcessorRcPtr *) p;
}
catch (Exception &exception) {
OCIO_reportException(exception);
}
OBJECT_GUARDED_DELETE(p, ConstProcessorRcPtr);
return NULL;
}
void OCIOImpl::processorApply(OCIO_ConstProcessorRcPtr *processor, OCIO_PackedImageDesc *img)
{
try {
(*(ConstProcessorRcPtr *) processor)->apply(*(PackedImageDesc *) img);
}
catch (Exception &exception) {
OCIO_reportException(exception);
}
}
void OCIOImpl::processorApply_predivide(OCIO_ConstProcessorRcPtr *processor, OCIO_PackedImageDesc *img_)
{
try {
PackedImageDesc *img = (PackedImageDesc *) img_;
int channels = img->getNumChannels();
if (channels == 4) {
float *pixels = img->getData();
int width = img->getWidth();
int height = img->getHeight();
for (int y = 0; y < height; y++) {
for (int x = 0; x < width; x++) {
float *pixel = pixels + 4 * (y * width + x);
processorApplyRGBA_predivide(processor, pixel);
}
}
}
else {
(*(ConstProcessorRcPtr *) processor)->apply(*img);
}
}
catch (Exception &exception) {
OCIO_reportException(exception);
}
}
void OCIOImpl::processorApplyRGB(OCIO_ConstProcessorRcPtr *processor, float *pixel)
{
(*(ConstProcessorRcPtr *) processor)->applyRGB(pixel);
}
void OCIOImpl::processorApplyRGBA(OCIO_ConstProcessorRcPtr *processor, float *pixel)
{
(*(ConstProcessorRcPtr *) processor)->applyRGBA(pixel);
}
void OCIOImpl::processorApplyRGBA_predivide(OCIO_ConstProcessorRcPtr *processor, float *pixel)
{
if (pixel[3] == 1.0f || pixel[3] == 0.0f) {
(*(ConstProcessorRcPtr *) processor)->applyRGBA(pixel);
}
else {
float alpha, inv_alpha;
alpha = pixel[3];
inv_alpha = 1.0f / alpha;
pixel[0] *= inv_alpha;
pixel[1] *= inv_alpha;
pixel[2] *= inv_alpha;
(*(ConstProcessorRcPtr *) processor)->applyRGBA(pixel);
pixel[0] *= alpha;
pixel[1] *= alpha;
pixel[2] *= alpha;
}
}
void OCIOImpl::processorRelease(OCIO_ConstProcessorRcPtr *p)
{
OBJECT_GUARDED_DELETE(p, ConstProcessorRcPtr);
}
const char *OCIOImpl::colorSpaceGetName(OCIO_ConstColorSpaceRcPtr *cs)
{
return (*(ConstColorSpaceRcPtr *) cs)->getName();
}
const char *OCIOImpl::colorSpaceGetDescription(OCIO_ConstColorSpaceRcPtr *cs)
{
return (*(ConstColorSpaceRcPtr *) cs)->getDescription();
}
const char *OCIOImpl::colorSpaceGetFamily(OCIO_ConstColorSpaceRcPtr *cs)
{
return (*(ConstColorSpaceRcPtr *)cs)->getFamily();
}
OCIO_DisplayTransformRcPtr *OCIOImpl::createDisplayTransform(void)
{
DisplayTransformRcPtr *dt = OBJECT_GUARDED_NEW(DisplayTransformRcPtr);
*dt = DisplayTransform::Create();
return (OCIO_DisplayTransformRcPtr *) dt;
}
void OCIOImpl::displayTransformSetInputColorSpaceName(OCIO_DisplayTransformRcPtr *dt, const char *name)
{
(*(DisplayTransformRcPtr *) dt)->setInputColorSpaceName(name);
}
void OCIOImpl::displayTransformSetDisplay(OCIO_DisplayTransformRcPtr *dt, const char *name)
{
(*(DisplayTransformRcPtr *) dt)->setDisplay(name);
}
void OCIOImpl::displayTransformSetView(OCIO_DisplayTransformRcPtr *dt, const char *name)
{
(*(DisplayTransformRcPtr *) dt)->setView(name);
}
void OCIOImpl::displayTransformSetDisplayCC(OCIO_DisplayTransformRcPtr *dt, OCIO_ConstTransformRcPtr *t)
{
(*(DisplayTransformRcPtr *) dt)->setDisplayCC(* (ConstTransformRcPtr *) t);
}
void OCIOImpl::displayTransformSetLinearCC(OCIO_DisplayTransformRcPtr *dt, OCIO_ConstTransformRcPtr *t)
{
(*(DisplayTransformRcPtr *) dt)->setLinearCC(*(ConstTransformRcPtr *) t);
}
void OCIOImpl::displayTransformSetLooksOverride(OCIO_DisplayTransformRcPtr *dt, const char *looks)
{
(*(DisplayTransformRcPtr *) dt)->setLooksOverride(looks);
}
void OCIOImpl::displayTransformSetLooksOverrideEnabled(OCIO_DisplayTransformRcPtr *dt, bool enabled)
{
(*(DisplayTransformRcPtr *) dt)->setLooksOverrideEnabled(enabled);
}
void OCIOImpl::displayTransformRelease(OCIO_DisplayTransformRcPtr *dt)
{
OBJECT_GUARDED_DELETE((DisplayTransformRcPtr *) dt, DisplayTransformRcPtr);
}
OCIO_PackedImageDesc *OCIOImpl::createOCIO_PackedImageDesc(float *data, long width, long height, long numChannels,
long chanStrideBytes, long xStrideBytes, long yStrideBytes)
{
try {
void *mem = MEM_mallocN(sizeof(PackedImageDesc), __func__);
PackedImageDesc *id = new(mem) PackedImageDesc(data, width, height, numChannels, chanStrideBytes, xStrideBytes, yStrideBytes);
return (OCIO_PackedImageDesc *) id;
}
catch (Exception &exception) {
OCIO_reportException(exception);
}
return NULL;
}
void OCIOImpl::OCIO_PackedImageDescRelease(OCIO_PackedImageDesc* id)
{
OBJECT_GUARDED_DELETE((PackedImageDesc *) id, PackedImageDesc);
}
OCIO_ExponentTransformRcPtr *OCIOImpl::createExponentTransform(void)
{
ExponentTransformRcPtr *et = OBJECT_GUARDED_NEW(ExponentTransformRcPtr);
*et = ExponentTransform::Create();
return (OCIO_ExponentTransformRcPtr *) et;
}
void OCIOImpl::exponentTransformSetValue(OCIO_ExponentTransformRcPtr *et, const float *exponent)
{
(*(ExponentTransformRcPtr *) et)->setValue(exponent);
}
void OCIOImpl::exponentTransformRelease(OCIO_ExponentTransformRcPtr *et)
{
OBJECT_GUARDED_DELETE((ExponentTransformRcPtr *) et, ExponentTransformRcPtr);
}
OCIO_MatrixTransformRcPtr *OCIOImpl::createMatrixTransform(void)
{
MatrixTransformRcPtr *mt = OBJECT_GUARDED_NEW(MatrixTransformRcPtr);
*mt = MatrixTransform::Create();
return (OCIO_MatrixTransformRcPtr *) mt;
}
void OCIOImpl::matrixTransformSetValue(OCIO_MatrixTransformRcPtr *mt, const float *m44, const float *offset4)
{
(*(MatrixTransformRcPtr *) mt)->setValue(m44, offset4);
}
void OCIOImpl::matrixTransformRelease(OCIO_MatrixTransformRcPtr *mt)
{
OBJECT_GUARDED_DELETE((MatrixTransformRcPtr *) mt, MatrixTransformRcPtr);
}
void OCIOImpl::matrixTransformScale(float *m44, float *offset4, const float *scale4f)
{
MatrixTransform::Scale(m44, offset4, scale4f);
}