Function imageGetSize

Source/3rdParty/bimg/src/image.cpp:319–369

	}

	uint32_t imageGetSize(TextureInfo* _info, uint16_t _width, uint16_t _height, uint16_t _depth, bool _cubeMap, bool _hasMips, uint16_t _numLayers, TextureFormat::Enum _format)
	{
		const ImageBlockInfo& blockInfo = getBlockInfo(_format);
		const uint8_t  bpp         = blockInfo.bitsPerPixel;
		const uint16_t blockWidth  = blockInfo.blockWidth;
		const uint16_t blockHeight = blockInfo.blockHeight;
		const uint16_t minBlockX   = blockInfo.minBlockX;
		const uint16_t minBlockY   = blockInfo.minBlockY;
		const uint8_t  blockSize   = blockInfo.blockSize;

		_width  = bx::max<uint16_t>(blockWidth  * minBlockX, ( (_width  + blockWidth  - 1) / blockWidth)*blockWidth);
		_height = bx::max<uint16_t>(blockHeight * minBlockY, ( (_height + blockHeight - 1) / blockHeight)*blockHeight);
		_depth  = bx::max<uint16_t>(1, _depth);
		const uint8_t  numMips = calcNumMips(_hasMips, _width, _height, _depth);
		const uint32_t sides   = _cubeMap ? 6 : 1;

		uint32_t width  = _width;
		uint32_t height = _height;
		uint32_t depth  = _depth;
		uint32_t size   = 0;

		for (uint32_t lod = 0; lod < numMips; ++lod)
		{
			width  = bx::max<uint32_t>(blockWidth  * minBlockX, ( (width  + blockWidth  - 1) / blockWidth )*blockWidth);
			height = bx::max<uint32_t>(blockHeight * minBlockY, ( (height + blockHeight - 1) / blockHeight)*blockHeight);
			depth  = bx::max<uint32_t>(1, depth);

			size += uint32_t(uint64_t(width/blockWidth * height/blockHeight * depth)*blockSize * sides);

			width  >>= 1;
			height >>= 1;
			depth  >>= 1;
		}

		size *= _numLayers;

		if (NULL != _info)
		{
			_info->format  = _format;
			_info->width   = _width;
			_info->height  = _height;
			_info->depth   = _depth;
			_info->numMips = numMips;
			_info->numLayers = _numLayers;
			_info->cubeMap   = _cubeMap;
			_info->storageSize  = size;
			_info->bitsPerPixel = bpp;
		}

		return size;
	}

	BX_NO_INLINE void imageSolid(void* _dst, uint32_t _width, uint32_t _height, uint32_t _solid)
	{