Function MirrorTexelsST

Source/Graphics/TextureTransform.cpp:273–310

// Assumes width p_dst = 2*width p_src and height p_dst = 2*height p_src
template< typename T, bool MirrorS, bool MirrorT >
static void MirrorTexelsST( void * dst, u32 dst_stride, const void * src, u32 src_stride, u32 width, u32 height )
{
	T *			p_dst = reinterpret_cast< T * >( dst );
	const T *	p_src = reinterpret_cast< const T * >( src );

	for( u32 y {}; y < height; ++y )
	{
		// Copy regular pixels
		CopyRow< T >( p_dst, p_src, width );

		if( MirrorS )
		{
			CopyRowReverse< T >( p_dst, p_src, width );
		}

		p_dst = AddByteOffset< T >( p_dst, dst_stride );
		p_src = AddByteOffset< T >( p_src, src_stride );
	}

	if( MirrorT )
	{
		// Copy remaining rows in reverse order
		for( u32 y {}; y < height; ++y )
		{
			p_src = AddByteOffset( p_src, -s32(src_stride) );

			// Copy regular pixels
			CopyRow< T >( p_dst, p_src, width );

			if( MirrorS )
			{
				CopyRowReverse< T >( p_dst, p_src, width );
			}

			p_dst = AddByteOffset< T >( p_dst, dst_stride );
		}
	}
}

template< bool MirrorS, bool MirrorT >
static void MirrorTexels( void * dst, u32 dst_stride, const void * src, u32 src_stride, ETextureFormat tex_fmt, u32 width, u32 height )