void SurfaceT<T>::init( ImageSourceRef imageSource, const SurfaceConstraints &constraints, boost::tribool alpha )
{
int32_t width = imageSource->getWidth();
int32_t height = imageSource->getHeight();
bool hasAlpha;
if( alpha )
hasAlpha = true;
else if( ! alpha )
hasAlpha = false;
else
hasAlpha = imageSource->hasAlpha();
SurfaceChannelOrder channelOrder = constraints.getChannelOrder( hasAlpha );
int32_t rowBytes = constraints.getRowBytes( width, channelOrder, sizeof(T) );
T *data = new T[height * rowBytes];
mObj = std::shared_ptr<Obj>( new Obj( width, height, channelOrder, data, true, rowBytes ) );
mObj->mIsPremultiplied = imageSource->isPremultiplied();
std::shared_ptr<ImageTargetSurface<T> > target = ImageTargetSurface<T>::createRef( this );
imageSource->load( target );
// if the image doesn't have alpha but we do, set ourselves to be full alpha
if( hasAlpha && ( ! imageSource->hasAlpha() ) ) {
ip::fill( &getChannelAlpha(), CHANTRAIT<T>::max() );
}
}
GWorldPtr createGWorld( ImageSourceRef imageSource )
{
ImageTargetGWorldRef target = ImageTargetGWorld::createRef( imageSource );
imageSource->load( target );
target->finalize();
return target->getGWorld();
}
CVPixelBufferRef createCvPixelBuffer( ImageSourceRef imageSource, bool convertToYpCbCr )
{
ImageTargetCvPixelBufferRef target = ImageTargetCvPixelBuffer::createRef( imageSource, convertToYpCbCr );
imageSource->load( target );
target->finalize();
::CVPixelBufferRef result( target->getCvPixelBuffer() );
::CVPixelBufferRetain( result );
return result;
}
ChannelT<T>::ChannelT( const ImageSourceRef &imageSource )
{
mWidth = imageSource->getWidth();
mHeight = imageSource->getHeight();
mRowBytes = mWidth * sizeof(T);
mIncrement = 1;
mDataStore = shared_ptr<T>( new T[mHeight * (mRowBytes/sizeof(T))], std::default_delete<T[]>() );
mData = mDataStore.get();
shared_ptr<ImageTargetChannel<T>> target = ImageTargetChannel<T>::createRef( this );
imageSource->load( target );
}
ChannelT<T>::ChannelT( ImageSourceRef imageSource )
{
int32_t width = imageSource->getWidth();
int32_t height = imageSource->getHeight();
int32_t rowBytes = width * sizeof(T);
T *data = new T[height * (rowBytes/sizeof(T))];
mObj = shared_ptr<Obj>( new Obj( width, height, rowBytes, 1, true, data ) );
mObj->mOwnsData = true;
shared_ptr<ImageTargetChannel<T> > target = ImageTargetChannel<T>::createRef( this );
imageSource->load( target );
}
void writeImage( ImageTargetRef imageTarget, const ImageSourceRef &imageSource )
{
imageSource->load( imageTarget );
imageTarget->finalize();
}
void Texture::init( ImageSourceRef imageSource, const Format &format )
{
mObj->mDoNotDispose = false;
mObj->mTarget = format.mTarget;
mObj->mWidth = mObj->mCleanWidth = imageSource->getWidth();
mObj->mHeight = mObj->mCleanHeight = imageSource->getHeight();
#if defined( CINDER_MAC )
bool supportsTextureFloat = gl::isExtensionAvailable( "GL_ARB_texture_float" );
#elif defined( CINDER_MSW )
bool supportsTextureFloat = GLEE_ARB_texture_float != 0;
#endif
// Set the internal format based on the image's color space
if( format.isAutoInternalFormat() ) {
switch( imageSource->getColorModel() ) {
#if ! defined( CINDER_GLES )
case ImageIo::CM_RGB:
if( imageSource->getDataType() == ImageIo::UINT8 )
mObj->mInternalFormat = ( imageSource->hasAlpha() ) ? GL_RGBA8 : GL_RGB8;
else if( imageSource->getDataType() == ImageIo::UINT16 )
mObj->mInternalFormat = ( imageSource->hasAlpha() ) ? GL_RGBA16 : GL_RGB16;
else if( imageSource->getDataType() == ImageIo::FLOAT32 && supportsTextureFloat )
mObj->mInternalFormat = ( imageSource->hasAlpha() ) ? GL_RGBA32F_ARB : GL_RGB32F_ARB;
else
mObj->mInternalFormat = ( imageSource->hasAlpha() ) ? GL_RGBA : GL_RGB;
break;
case ImageIo::CM_GRAY:
if( imageSource->getDataType() == ImageIo::UINT8 )
mObj->mInternalFormat = ( imageSource->hasAlpha() ) ? GL_LUMINANCE8_ALPHA8 : GL_LUMINANCE8;
else if( imageSource->getDataType() == ImageIo::UINT16 )
mObj->mInternalFormat = ( imageSource->hasAlpha() ) ? GL_LUMINANCE16_ALPHA16 : GL_LUMINANCE16;
else if( imageSource->getDataType() == ImageIo::FLOAT32 && supportsTextureFloat )
mObj->mInternalFormat = ( imageSource->hasAlpha() ) ? GL_LUMINANCE_ALPHA32F_ARB : GL_LUMINANCE32F_ARB;
else
mObj->mInternalFormat = ( imageSource->hasAlpha() ) ? GL_LUMINANCE_ALPHA : GL_LUMINANCE;
break;
#else
case ImageIo::CM_RGB:
mObj->mInternalFormat = ( imageSource->hasAlpha() ) ? GL_RGBA : GL_RGB;
break;
case ImageIo::CM_GRAY:
mObj->mInternalFormat = ( imageSource->hasAlpha() ) ? GL_LUMINANCE_ALPHA : GL_LUMINANCE;
break;
#endif
default:
throw ImageIoExceptionIllegalColorModel();
break;
}
}
else {
mObj->mInternalFormat = format.mInternalFormat;
}
// setup an appropriate dataFormat/ImageTargetTexture based on the image's color space
GLint dataFormat;
ImageIo::ChannelOrder channelOrder;
bool isGray = false;
switch( imageSource->getColorModel() ) {
case ImageSource::CM_RGB:
dataFormat = ( imageSource->hasAlpha() ) ? GL_RGBA : GL_RGB;
channelOrder = ( imageSource->hasAlpha() ) ? ImageIo::RGBA : ImageIo::RGB;
break;
case ImageSource::CM_GRAY:
dataFormat = ( imageSource->hasAlpha() ) ? GL_LUMINANCE_ALPHA : GL_LUMINANCE;
channelOrder = ( imageSource->hasAlpha() ) ? ImageIo::YA : ImageIo::Y;
isGray = true;
break;
default: // if this is some other color space, we'll have to punt and go w/ RGB
dataFormat = ( imageSource->hasAlpha() ) ? GL_RGBA : GL_RGB;
channelOrder = ( imageSource->hasAlpha() ) ? ImageIo::RGBA : ImageIo::RGB;
break;
}
glGenTextures( 1, &mObj->mTextureID );
glBindTexture( mObj->mTarget, mObj->mTextureID );
glTexParameteri( mObj->mTarget, GL_TEXTURE_WRAP_S, format.mWrapS );
glTexParameteri( mObj->mTarget, GL_TEXTURE_WRAP_T, format.mWrapT );
glTexParameteri( mObj->mTarget, GL_TEXTURE_MIN_FILTER, format.mMinFilter );
glTexParameteri( mObj->mTarget, GL_TEXTURE_MAG_FILTER, format.mMagFilter );
if( format.mMipmapping )
glTexParameteri( mObj->mTarget, GL_GENERATE_MIPMAP, GL_TRUE );
if( mObj->mTarget == GL_TEXTURE_2D ) {
mObj->mMaxU = mObj->mMaxV = 1.0f;
}
else {
mObj->mMaxU = (float)mObj->mWidth;
mObj->mMaxV = (float)mObj->mHeight;
}
glPixelStorei( GL_UNPACK_ALIGNMENT, 1 );
if( imageSource->getDataType() == ImageIo::UINT8 ) {
shared_ptr<ImageTargetGLTexture<uint8_t> > target = ImageTargetGLTexture<uint8_t>::createRef( this, channelOrder, isGray, imageSource->hasAlpha() );
imageSource->load( target );
glTexImage2D( mObj->mTarget, 0, mObj->mInternalFormat, mObj->mWidth, mObj->mHeight, 0, dataFormat, GL_UNSIGNED_BYTE, target->getData() );
}
else if( imageSource->getDataType() == ImageIo::UINT16 ) {
shared_ptr<ImageTargetGLTexture<uint16_t> > target = ImageTargetGLTexture<uint16_t>::createRef( this, channelOrder, isGray, imageSource->hasAlpha() );
imageSource->load( target );
glTexImage2D( mObj->mTarget, 0, mObj->mInternalFormat, mObj->mWidth, mObj->mHeight, 0, dataFormat, GL_UNSIGNED_SHORT, target->getData() );
}
else {
shared_ptr<ImageTargetGLTexture<float> > target = ImageTargetGLTexture<float>::createRef( this, channelOrder, isGray, imageSource->hasAlpha() );
imageSource->load( target );
glTexImage2D( mObj->mTarget, 0, mObj->mInternalFormat, mObj->mWidth, mObj->mHeight, 0, dataFormat, GL_FLOAT, target->getData() );
}
}