bool GLTextureCubeMap::set( GLCubeMapFace face,
Array2DReadView< uint8x4 > data, GLImageFormat format,
const Vector2i& dstOffset )
{
if( dstOffset.x + data.width() > sideLength() ||
dstOffset.y + data.height() > sideLength() )
{
return false;
}
if( format != GLImageFormat::RGBA &&
format != GLImageFormat::BGRA )
{
return false;
}
//glPushClientAttribDefaultEXT( GL_CLIENT_PIXEL_STORE_BIT );
// TODO: alignment, strides, ..., has to be packed
// DSA treats a cube map as a 2D array texture.
glTextureSubImage3D
(
id(), 0,
dstOffset.x, dstOffset.y, static_cast< int >( face ),
data.width(), data.height(), 1, // 1 face
static_cast< GLenum >( format ), GL_UNSIGNED_BYTE,
data.pointer()
);
//glPopClientAttrib();
return true;
}
bool GLTextureRectangle::set( Array2DReadView< uint8x2 > srcData,
GLImageFormat srcFormat,
const Vector2i& dstOffset )
{
if( srcFormat != GLImageFormat::RG )
{
return false;
}
if( !srcData.packed() )
{
return false;
}
const GLPixelType srcType = GLPixelType::UNSIGNED_BYTE;
return set2D( srcData.pointer(), srcData.size(), srcFormat, srcType,
dstOffset );
}
bool GLTextureRectangle::set( Array2DReadView< Vector4f > srcData,
GLImageFormat srcFormat,
const Vector2i& dstOffset )
{
if( srcFormat != GLImageFormat::RGBA && srcFormat != GLImageFormat::BGRA )
{
return false;
}
if( !srcData.packed() )
{
return false;
}
const GLPixelType srcType = GLPixelType::FLOAT;
return set2D( srcData.pointer(), srcData.size(), srcFormat, srcType,
dstOffset );
}
// static
bool PNGIO::write( const std::string& filename,
Array2DReadView< uint8x4 > image )
{
Array2D< uint8x4 > tmpImage;
const uint8_t* srcPointer;
if( !image.packed() )
{
tmpImage.resize( image.size() );
copy< uint8x4 >( image, tmpImage );
srcPointer = reinterpret_cast< const uint8_t* >( tmpImage.pointer() );
}
else
{
srcPointer = reinterpret_cast< const uint8_t* >( image.pointer() );
}
unsigned int errVal = lodepng::encode(
filename, srcPointer, image.width(), image.height(), LCT_RGBA );
bool succeeded = ( errVal == 0 );
return succeeded;
}