Function switch_endianness4

Source/astcenccli_image_load_store.cpp:681–698

* @brief Swap endianness of N four byte values. * * @param[in,out] dataptr The data to convert. * @param byte_count The number of bytes to convert. */

 * @param         byte_count   The number of bytes to convert.
 */
static void switch_endianness4(
	void* dataptr,
	size_t byte_count
) {
	uint8_t* data = reinterpret_cast<uint8_t*>(dataptr);
	for (size_t i = 0; i < byte_count / 4; i++)
	{
		uint8_t d0 = data[0];
		uint8_t d1 = data[1];
		uint8_t d2 = data[2];
		uint8_t d3 = data[3];
		data[0] = d3;
		data[1] = d2;
		data[2] = d1;
		data[3] = d0;
		data += 4;
	}
}

// Khronos enums
#define GL_RED                                      0x1903