mirror of
https://github.com/godotengine/godot
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58 lines
1.3 KiB
C
58 lines
1.3 KiB
C
/* -*- tab-width: 4; -*- */
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/* vi: set sw=2 ts=4 expandtab: */
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/* $Id$ */
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/*
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* Copyright 2010-2020 The Khronos Group Inc.
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <KHR/khrplatform.h>
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#include "ktx.h"
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/*
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* SwapEndian16: Swaps endianness in an array of 16-bit values
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*/
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void
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_ktxSwapEndian16(khronos_uint16_t* pData16, ktx_size_t count)
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{
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for (ktx_size_t i = 0; i < count; ++i)
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{
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khronos_uint16_t x = *pData16;
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*pData16++ = (x << 8) | (x >> 8);
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}
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}
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/*
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* SwapEndian32: Swaps endianness in an array of 32-bit values
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*/
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void
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_ktxSwapEndian32(khronos_uint32_t* pData32, ktx_size_t count)
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{
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for (ktx_size_t i = 0; i < count; ++i)
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{
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khronos_uint32_t x = *pData32;
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*pData32++ = (x << 24) | ((x & 0xFF00) << 8) | ((x & 0xFF0000) >> 8) | (x >> 24);
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}
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}
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/*
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* SwapEndian364: Swaps endianness in an array of 32-bit values
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*/
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void
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_ktxSwapEndian64(khronos_uint64_t* pData64, ktx_size_t count)
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{
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for (ktx_size_t i = 0; i < count; ++i)
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{
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khronos_uint64_t x = *pData64;
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*pData64++ = (x << 56) | ((x & 0xFF00) << 40) | ((x & 0xFF0000) << 24)
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| ((x & 0xFF000000) << 8 ) | ((x & 0xFF00000000) >> 8)
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| ((x & 0xFF0000000000) >> 24)
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| ((x & 0xFF000000000000) << 40) | (x >> 56);
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}
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}
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