Function astc_set_bits

external/basisu/transcoder/basisu_transcoder.cpp:5082–5096

Writes bits to output in an endian safe way

	// Writes bits to output in an endian safe way
	static inline void astc_set_bits(uint32_t* pOutput, int& bit_pos, uint32_t value, uint32_t total_bits)
	{
		uint8_t* pBytes = reinterpret_cast<uint8_t*>(pOutput);

		while (total_bits)
		{
			const uint32_t bits_to_write = basisu::minimum<int>(total_bits, 8 - (bit_pos & 7));

			pBytes[bit_pos >> 3] |= static_cast<uint8_t>(value << (bit_pos & 7));

			bit_pos += bits_to_write;
			total_bits -= bits_to_write;
			value >>= bits_to_write;
		}
	}

	// Encodes 5 values to output, usable for any range that uses trits and bits
	static void astc_encode_trits(uint32_t* pOutput, const uint8_t* pValues, int& bit_pos, int n)