1134 lines
41 KiB
C++
1134 lines
41 KiB
C++
/*-------------------------------------------------------------------------
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* drawElements Quality Program Tester Core
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* ----------------------------------------
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*
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* Copyright 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*//*!
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* \file
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* \brief Compressed Texture Utilities.
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*//*--------------------------------------------------------------------*/
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#include "tcuCompressedTexture.hpp"
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#include "tcuTextureUtil.hpp"
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#include "tcuAstcUtil.hpp"
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#include "deStringUtil.hpp"
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#include "deFloat16.h"
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#include <algorithm>
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namespace tcu
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{
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int getBlockSize (CompressedTexFormat format)
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{
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if (isAstcFormat(format))
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{
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return astc::BLOCK_SIZE_BYTES;
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}
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else if (isEtcFormat(format))
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{
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switch (format)
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{
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case COMPRESSEDTEXFORMAT_ETC1_RGB8: return 8;
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case COMPRESSEDTEXFORMAT_EAC_R11: return 8;
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case COMPRESSEDTEXFORMAT_EAC_SIGNED_R11: return 8;
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case COMPRESSEDTEXFORMAT_EAC_RG11: return 16;
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case COMPRESSEDTEXFORMAT_EAC_SIGNED_RG11: return 16;
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case COMPRESSEDTEXFORMAT_ETC2_RGB8: return 8;
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case COMPRESSEDTEXFORMAT_ETC2_SRGB8: return 8;
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case COMPRESSEDTEXFORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1: return 8;
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case COMPRESSEDTEXFORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1: return 8;
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case COMPRESSEDTEXFORMAT_ETC2_EAC_RGBA8: return 16;
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case COMPRESSEDTEXFORMAT_ETC2_EAC_SRGB8_ALPHA8: return 16;
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default:
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DE_ASSERT(false);
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return -1;
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}
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}
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else
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{
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DE_ASSERT(false);
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return -1;
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}
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}
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IVec3 getBlockPixelSize (CompressedTexFormat format)
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{
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if (isEtcFormat(format))
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{
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return IVec3(4, 4, 1);
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}
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else if (isAstcFormat(format))
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{
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switch (format)
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{
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case COMPRESSEDTEXFORMAT_ASTC_4x4_RGBA: return IVec3(4, 4, 1);
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case COMPRESSEDTEXFORMAT_ASTC_5x4_RGBA: return IVec3(5, 4, 1);
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case COMPRESSEDTEXFORMAT_ASTC_5x5_RGBA: return IVec3(5, 5, 1);
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case COMPRESSEDTEXFORMAT_ASTC_6x5_RGBA: return IVec3(6, 5, 1);
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case COMPRESSEDTEXFORMAT_ASTC_6x6_RGBA: return IVec3(6, 6, 1);
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case COMPRESSEDTEXFORMAT_ASTC_8x5_RGBA: return IVec3(8, 5, 1);
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case COMPRESSEDTEXFORMAT_ASTC_8x6_RGBA: return IVec3(8, 6, 1);
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case COMPRESSEDTEXFORMAT_ASTC_8x8_RGBA: return IVec3(8, 8, 1);
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case COMPRESSEDTEXFORMAT_ASTC_10x5_RGBA: return IVec3(10, 5, 1);
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case COMPRESSEDTEXFORMAT_ASTC_10x6_RGBA: return IVec3(10, 6, 1);
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case COMPRESSEDTEXFORMAT_ASTC_10x8_RGBA: return IVec3(10, 8, 1);
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case COMPRESSEDTEXFORMAT_ASTC_10x10_RGBA: return IVec3(10, 10, 1);
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case COMPRESSEDTEXFORMAT_ASTC_12x10_RGBA: return IVec3(12, 10, 1);
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case COMPRESSEDTEXFORMAT_ASTC_12x12_RGBA: return IVec3(12, 12, 1);
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case COMPRESSEDTEXFORMAT_ASTC_4x4_SRGB8_ALPHA8: return IVec3(4, 4, 1);
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case COMPRESSEDTEXFORMAT_ASTC_5x4_SRGB8_ALPHA8: return IVec3(5, 4, 1);
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case COMPRESSEDTEXFORMAT_ASTC_5x5_SRGB8_ALPHA8: return IVec3(5, 5, 1);
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case COMPRESSEDTEXFORMAT_ASTC_6x5_SRGB8_ALPHA8: return IVec3(6, 5, 1);
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case COMPRESSEDTEXFORMAT_ASTC_6x6_SRGB8_ALPHA8: return IVec3(6, 6, 1);
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case COMPRESSEDTEXFORMAT_ASTC_8x5_SRGB8_ALPHA8: return IVec3(8, 5, 1);
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case COMPRESSEDTEXFORMAT_ASTC_8x6_SRGB8_ALPHA8: return IVec3(8, 6, 1);
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case COMPRESSEDTEXFORMAT_ASTC_8x8_SRGB8_ALPHA8: return IVec3(8, 8, 1);
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case COMPRESSEDTEXFORMAT_ASTC_10x5_SRGB8_ALPHA8: return IVec3(10, 5, 1);
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case COMPRESSEDTEXFORMAT_ASTC_10x6_SRGB8_ALPHA8: return IVec3(10, 6, 1);
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case COMPRESSEDTEXFORMAT_ASTC_10x8_SRGB8_ALPHA8: return IVec3(10, 8, 1);
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case COMPRESSEDTEXFORMAT_ASTC_10x10_SRGB8_ALPHA8: return IVec3(10, 10, 1);
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case COMPRESSEDTEXFORMAT_ASTC_12x10_SRGB8_ALPHA8: return IVec3(12, 10, 1);
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case COMPRESSEDTEXFORMAT_ASTC_12x12_SRGB8_ALPHA8: return IVec3(12, 12, 1);
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default:
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DE_ASSERT(false);
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return IVec3();
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}
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}
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else
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{
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DE_ASSERT(false);
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return IVec3(-1);
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}
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}
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bool isEtcFormat (CompressedTexFormat format)
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{
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switch (format)
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{
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case COMPRESSEDTEXFORMAT_ETC1_RGB8:
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case COMPRESSEDTEXFORMAT_EAC_R11:
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case COMPRESSEDTEXFORMAT_EAC_SIGNED_R11:
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case COMPRESSEDTEXFORMAT_EAC_RG11:
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case COMPRESSEDTEXFORMAT_EAC_SIGNED_RG11:
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case COMPRESSEDTEXFORMAT_ETC2_RGB8:
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case COMPRESSEDTEXFORMAT_ETC2_SRGB8:
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case COMPRESSEDTEXFORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1:
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case COMPRESSEDTEXFORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1:
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case COMPRESSEDTEXFORMAT_ETC2_EAC_RGBA8:
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case COMPRESSEDTEXFORMAT_ETC2_EAC_SRGB8_ALPHA8:
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return true;
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default:
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return false;
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}
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}
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bool isAstcFormat (CompressedTexFormat format)
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{
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switch (format)
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{
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case COMPRESSEDTEXFORMAT_ASTC_4x4_RGBA:
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case COMPRESSEDTEXFORMAT_ASTC_5x4_RGBA:
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case COMPRESSEDTEXFORMAT_ASTC_5x5_RGBA:
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case COMPRESSEDTEXFORMAT_ASTC_6x5_RGBA:
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case COMPRESSEDTEXFORMAT_ASTC_6x6_RGBA:
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case COMPRESSEDTEXFORMAT_ASTC_8x5_RGBA:
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case COMPRESSEDTEXFORMAT_ASTC_8x6_RGBA:
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case COMPRESSEDTEXFORMAT_ASTC_8x8_RGBA:
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case COMPRESSEDTEXFORMAT_ASTC_10x5_RGBA:
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case COMPRESSEDTEXFORMAT_ASTC_10x6_RGBA:
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case COMPRESSEDTEXFORMAT_ASTC_10x8_RGBA:
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case COMPRESSEDTEXFORMAT_ASTC_10x10_RGBA:
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case COMPRESSEDTEXFORMAT_ASTC_12x10_RGBA:
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case COMPRESSEDTEXFORMAT_ASTC_12x12_RGBA:
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case COMPRESSEDTEXFORMAT_ASTC_4x4_SRGB8_ALPHA8:
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case COMPRESSEDTEXFORMAT_ASTC_5x4_SRGB8_ALPHA8:
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case COMPRESSEDTEXFORMAT_ASTC_5x5_SRGB8_ALPHA8:
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case COMPRESSEDTEXFORMAT_ASTC_6x5_SRGB8_ALPHA8:
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case COMPRESSEDTEXFORMAT_ASTC_6x6_SRGB8_ALPHA8:
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case COMPRESSEDTEXFORMAT_ASTC_8x5_SRGB8_ALPHA8:
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case COMPRESSEDTEXFORMAT_ASTC_8x6_SRGB8_ALPHA8:
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case COMPRESSEDTEXFORMAT_ASTC_8x8_SRGB8_ALPHA8:
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case COMPRESSEDTEXFORMAT_ASTC_10x5_SRGB8_ALPHA8:
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case COMPRESSEDTEXFORMAT_ASTC_10x6_SRGB8_ALPHA8:
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case COMPRESSEDTEXFORMAT_ASTC_10x8_SRGB8_ALPHA8:
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case COMPRESSEDTEXFORMAT_ASTC_10x10_SRGB8_ALPHA8:
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case COMPRESSEDTEXFORMAT_ASTC_12x10_SRGB8_ALPHA8:
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case COMPRESSEDTEXFORMAT_ASTC_12x12_SRGB8_ALPHA8:
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return true;
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default:
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return false;
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}
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}
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bool isAstcSRGBFormat (CompressedTexFormat format)
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{
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switch (format)
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{
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case COMPRESSEDTEXFORMAT_ASTC_4x4_SRGB8_ALPHA8:
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case COMPRESSEDTEXFORMAT_ASTC_5x4_SRGB8_ALPHA8:
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case COMPRESSEDTEXFORMAT_ASTC_5x5_SRGB8_ALPHA8:
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case COMPRESSEDTEXFORMAT_ASTC_6x5_SRGB8_ALPHA8:
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case COMPRESSEDTEXFORMAT_ASTC_6x6_SRGB8_ALPHA8:
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case COMPRESSEDTEXFORMAT_ASTC_8x5_SRGB8_ALPHA8:
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case COMPRESSEDTEXFORMAT_ASTC_8x6_SRGB8_ALPHA8:
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case COMPRESSEDTEXFORMAT_ASTC_8x8_SRGB8_ALPHA8:
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case COMPRESSEDTEXFORMAT_ASTC_10x5_SRGB8_ALPHA8:
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case COMPRESSEDTEXFORMAT_ASTC_10x6_SRGB8_ALPHA8:
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case COMPRESSEDTEXFORMAT_ASTC_10x8_SRGB8_ALPHA8:
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case COMPRESSEDTEXFORMAT_ASTC_10x10_SRGB8_ALPHA8:
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case COMPRESSEDTEXFORMAT_ASTC_12x10_SRGB8_ALPHA8:
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case COMPRESSEDTEXFORMAT_ASTC_12x12_SRGB8_ALPHA8:
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return true;
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default:
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return false;
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}
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}
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TextureFormat getUncompressedFormat (CompressedTexFormat format)
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{
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if (isEtcFormat(format))
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{
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switch (format)
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{
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case COMPRESSEDTEXFORMAT_ETC1_RGB8: return TextureFormat(TextureFormat::RGB, TextureFormat::UNORM_INT8);
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case COMPRESSEDTEXFORMAT_EAC_R11: return TextureFormat(TextureFormat::R, TextureFormat::UNORM_INT16);
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case COMPRESSEDTEXFORMAT_EAC_SIGNED_R11: return TextureFormat(TextureFormat::R, TextureFormat::SNORM_INT16);
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case COMPRESSEDTEXFORMAT_EAC_RG11: return TextureFormat(TextureFormat::RG, TextureFormat::UNORM_INT16);
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case COMPRESSEDTEXFORMAT_EAC_SIGNED_RG11: return TextureFormat(TextureFormat::RG, TextureFormat::SNORM_INT16);
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case COMPRESSEDTEXFORMAT_ETC2_RGB8: return TextureFormat(TextureFormat::RGB, TextureFormat::UNORM_INT8);
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case COMPRESSEDTEXFORMAT_ETC2_SRGB8: return TextureFormat(TextureFormat::sRGB, TextureFormat::UNORM_INT8);
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case COMPRESSEDTEXFORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1: return TextureFormat(TextureFormat::RGBA, TextureFormat::UNORM_INT8);
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case COMPRESSEDTEXFORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1: return TextureFormat(TextureFormat::sRGBA, TextureFormat::UNORM_INT8);
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case COMPRESSEDTEXFORMAT_ETC2_EAC_RGBA8: return TextureFormat(TextureFormat::RGBA, TextureFormat::UNORM_INT8);
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case COMPRESSEDTEXFORMAT_ETC2_EAC_SRGB8_ALPHA8: return TextureFormat(TextureFormat::sRGBA, TextureFormat::UNORM_INT8);
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default:
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DE_ASSERT(false);
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return TextureFormat();
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}
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}
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else if (isAstcFormat(format))
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{
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if (isAstcSRGBFormat(format))
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return TextureFormat(TextureFormat::sRGBA, TextureFormat::UNORM_INT8);
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else
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return TextureFormat(TextureFormat::RGBA, TextureFormat::HALF_FLOAT);
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}
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else
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{
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DE_ASSERT(false);
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return TextureFormat();
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}
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}
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CompressedTexFormat getAstcFormatByBlockSize (const IVec3& size, bool isSRGB)
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{
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if (size.z() > 1)
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throw InternalError("3D ASTC textures not currently supported");
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for (int fmtI = 0; fmtI < COMPRESSEDTEXFORMAT_LAST; fmtI++)
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{
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const CompressedTexFormat fmt = (CompressedTexFormat)fmtI;
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if (isAstcFormat(fmt) && getBlockPixelSize(fmt) == size && isAstcSRGBFormat(fmt) == isSRGB)
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return fmt;
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}
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throw InternalError("Invalid ASTC block size " + de::toString(size.x()) + "x" + de::toString(size.y()) + "x" + de::toString(size.z()));
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}
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namespace
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{
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// \todo [2013-08-06 nuutti] ETC and ASTC decompression codes are rather unrelated, and are already in their own "private" namespaces - should this be split to multiple files?
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namespace EtcDecompressInternal
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{
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enum
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{
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ETC2_BLOCK_WIDTH = 4,
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ETC2_BLOCK_HEIGHT = 4,
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ETC2_UNCOMPRESSED_PIXEL_SIZE_A8 = 1,
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ETC2_UNCOMPRESSED_PIXEL_SIZE_R11 = 2,
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ETC2_UNCOMPRESSED_PIXEL_SIZE_RG11 = 4,
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ETC2_UNCOMPRESSED_PIXEL_SIZE_RGB8 = 3,
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ETC2_UNCOMPRESSED_PIXEL_SIZE_RGBA8 = 4,
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ETC2_UNCOMPRESSED_BLOCK_SIZE_A8 = ETC2_BLOCK_WIDTH*ETC2_BLOCK_HEIGHT*ETC2_UNCOMPRESSED_PIXEL_SIZE_A8,
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ETC2_UNCOMPRESSED_BLOCK_SIZE_R11 = ETC2_BLOCK_WIDTH*ETC2_BLOCK_HEIGHT*ETC2_UNCOMPRESSED_PIXEL_SIZE_R11,
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ETC2_UNCOMPRESSED_BLOCK_SIZE_RG11 = ETC2_BLOCK_WIDTH*ETC2_BLOCK_HEIGHT*ETC2_UNCOMPRESSED_PIXEL_SIZE_RG11,
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ETC2_UNCOMPRESSED_BLOCK_SIZE_RGB8 = ETC2_BLOCK_WIDTH*ETC2_BLOCK_HEIGHT*ETC2_UNCOMPRESSED_PIXEL_SIZE_RGB8,
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ETC2_UNCOMPRESSED_BLOCK_SIZE_RGBA8 = ETC2_BLOCK_WIDTH*ETC2_BLOCK_HEIGHT*ETC2_UNCOMPRESSED_PIXEL_SIZE_RGBA8
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};
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inline deUint64 get64BitBlock (const deUint8* src, int blockNdx)
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{
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// Stored in big-endian form.
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deUint64 block = 0;
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for (int i = 0; i < 8; i++)
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block = (block << 8ull) | (deUint64)(src[blockNdx*8+i]);
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return block;
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}
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// Return the first 64 bits of a 128 bit block.
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inline deUint64 get128BitBlockStart (const deUint8* src, int blockNdx)
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{
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return get64BitBlock(src, 2*blockNdx);
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}
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// Return the last 64 bits of a 128 bit block.
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inline deUint64 get128BitBlockEnd (const deUint8* src, int blockNdx)
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{
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return get64BitBlock(src, 2*blockNdx + 1);
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}
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inline deUint32 getBit (deUint64 src, int bit)
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{
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return (src >> bit) & 1;
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}
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inline deUint32 getBits (deUint64 src, int low, int high)
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{
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const int numBits = (high-low) + 1;
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DE_ASSERT(de::inRange(numBits, 1, 32));
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if (numBits < 32)
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return (deUint32)((src >> low) & ((1u<<numBits)-1));
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else
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return (deUint32)((src >> low) & 0xFFFFFFFFu);
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}
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inline deUint8 extend4To8 (deUint8 src)
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{
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DE_ASSERT((src & ~((1<<4)-1)) == 0);
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return (deUint8)((src << 4) | src);
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}
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inline deUint8 extend5To8 (deUint8 src)
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{
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DE_ASSERT((src & ~((1<<5)-1)) == 0);
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return (deUint8)((src << 3) | (src >> 2));
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}
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inline deUint8 extend6To8 (deUint8 src)
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{
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DE_ASSERT((src & ~((1<<6)-1)) == 0);
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return (deUint8)((src << 2) | (src >> 4));
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}
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inline deUint8 extend7To8 (deUint8 src)
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{
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DE_ASSERT((src & ~((1<<7)-1)) == 0);
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return (deUint8)((src << 1) | (src >> 6));
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}
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inline deInt8 extendSigned3To8 (deUint8 src)
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{
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const bool isNeg = (src & (1<<2)) != 0;
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return (deInt8)((isNeg ? ~((1<<3)-1) : 0) | src);
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}
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inline deUint8 extend5Delta3To8 (deUint8 base5, deUint8 delta3)
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{
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const deUint8 t = (deUint8)((deInt8)base5 + extendSigned3To8(delta3));
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return extend5To8(t);
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}
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inline deUint16 extend11To16 (deUint16 src)
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{
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DE_ASSERT((src & ~((1<<11)-1)) == 0);
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return (deUint16)((src << 5) | (src >> 6));
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}
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inline deInt16 extend11To16WithSign (deInt16 src)
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{
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if (src < 0)
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return (deInt16)(-(deInt16)extend11To16((deUint16)(-src)));
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else
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return (deInt16)extend11To16(src);
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}
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void decompressETC1Block (deUint8 dst[ETC2_UNCOMPRESSED_BLOCK_SIZE_RGB8], deUint64 src)
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{
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const int diffBit = (int)getBit(src, 33);
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const int flipBit = (int)getBit(src, 32);
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const deUint32 table[2] = { getBits(src, 37, 39), getBits(src, 34, 36) };
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deUint8 baseR[2];
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deUint8 baseG[2];
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deUint8 baseB[2];
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if (diffBit == 0)
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{
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// Individual mode.
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baseR[0] = extend4To8((deUint8)getBits(src, 60, 63));
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baseR[1] = extend4To8((deUint8)getBits(src, 56, 59));
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baseG[0] = extend4To8((deUint8)getBits(src, 52, 55));
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baseG[1] = extend4To8((deUint8)getBits(src, 48, 51));
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baseB[0] = extend4To8((deUint8)getBits(src, 44, 47));
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baseB[1] = extend4To8((deUint8)getBits(src, 40, 43));
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}
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else
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{
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// Differential mode (diffBit == 1).
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deUint8 bR = (deUint8)getBits(src, 59, 63); // 5b
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deUint8 dR = (deUint8)getBits(src, 56, 58); // 3b
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deUint8 bG = (deUint8)getBits(src, 51, 55);
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deUint8 dG = (deUint8)getBits(src, 48, 50);
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deUint8 bB = (deUint8)getBits(src, 43, 47);
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deUint8 dB = (deUint8)getBits(src, 40, 42);
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baseR[0] = extend5To8(bR);
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baseG[0] = extend5To8(bG);
|
|
baseB[0] = extend5To8(bB);
|
|
|
|
baseR[1] = extend5Delta3To8(bR, dR);
|
|
baseG[1] = extend5Delta3To8(bG, dG);
|
|
baseB[1] = extend5Delta3To8(bB, dB);
|
|
}
|
|
|
|
static const int modifierTable[8][4] =
|
|
{
|
|
// 00 01 10 11
|
|
{ 2, 8, -2, -8 },
|
|
{ 5, 17, -5, -17 },
|
|
{ 9, 29, -9, -29 },
|
|
{ 13, 42, -13, -42 },
|
|
{ 18, 60, -18, -60 },
|
|
{ 24, 80, -24, -80 },
|
|
{ 33, 106, -33, -106 },
|
|
{ 47, 183, -47, -183 }
|
|
};
|
|
|
|
// Write final pixels.
|
|
for (int pixelNdx = 0; pixelNdx < ETC2_BLOCK_HEIGHT*ETC2_BLOCK_WIDTH; pixelNdx++)
|
|
{
|
|
const int x = pixelNdx / ETC2_BLOCK_HEIGHT;
|
|
const int y = pixelNdx % ETC2_BLOCK_HEIGHT;
|
|
const int dstOffset = (y*ETC2_BLOCK_WIDTH + x)*ETC2_UNCOMPRESSED_PIXEL_SIZE_RGB8;
|
|
const int subBlock = ((flipBit ? y : x) >= 2) ? 1 : 0;
|
|
const deUint32 tableNdx = table[subBlock];
|
|
const deUint32 modifierNdx = (getBit(src, 16+pixelNdx) << 1) | getBit(src, pixelNdx);
|
|
const int modifier = modifierTable[tableNdx][modifierNdx];
|
|
|
|
dst[dstOffset+0] = (deUint8)deClamp32((int)baseR[subBlock] + modifier, 0, 255);
|
|
dst[dstOffset+1] = (deUint8)deClamp32((int)baseG[subBlock] + modifier, 0, 255);
|
|
dst[dstOffset+2] = (deUint8)deClamp32((int)baseB[subBlock] + modifier, 0, 255);
|
|
}
|
|
}
|
|
|
|
// if alphaMode is true, do PUNCHTHROUGH and store alpha to alphaDst; otherwise do ordinary ETC2 RGB8.
|
|
void decompressETC2Block (deUint8 dst[ETC2_UNCOMPRESSED_BLOCK_SIZE_RGB8], deUint64 src, deUint8 alphaDst[ETC2_UNCOMPRESSED_BLOCK_SIZE_A8], bool alphaMode)
|
|
{
|
|
enum Etc2Mode
|
|
{
|
|
MODE_INDIVIDUAL = 0,
|
|
MODE_DIFFERENTIAL,
|
|
MODE_T,
|
|
MODE_H,
|
|
MODE_PLANAR,
|
|
|
|
MODE_LAST
|
|
};
|
|
|
|
const int diffOpaqueBit = (int)getBit(src, 33);
|
|
const deInt8 selBR = (deInt8)getBits(src, 59, 63); // 5 bits.
|
|
const deInt8 selBG = (deInt8)getBits(src, 51, 55);
|
|
const deInt8 selBB = (deInt8)getBits(src, 43, 47);
|
|
const deInt8 selDR = extendSigned3To8((deUint8)getBits(src, 56, 58)); // 3 bits.
|
|
const deInt8 selDG = extendSigned3To8((deUint8)getBits(src, 48, 50));
|
|
const deInt8 selDB = extendSigned3To8((deUint8)getBits(src, 40, 42));
|
|
Etc2Mode mode;
|
|
|
|
if (!alphaMode && diffOpaqueBit == 0)
|
|
mode = MODE_INDIVIDUAL;
|
|
else if (!de::inRange(selBR + selDR, 0, 31))
|
|
mode = MODE_T;
|
|
else if (!de::inRange(selBG + selDG, 0, 31))
|
|
mode = MODE_H;
|
|
else if (!de::inRange(selBB + selDB, 0, 31))
|
|
mode = MODE_PLANAR;
|
|
else
|
|
mode = MODE_DIFFERENTIAL;
|
|
|
|
if (mode == MODE_INDIVIDUAL || mode == MODE_DIFFERENTIAL)
|
|
{
|
|
// Individual and differential modes have some steps in common, handle them here.
|
|
static const int modifierTable[8][4] =
|
|
{
|
|
// 00 01 10 11
|
|
{ 2, 8, -2, -8 },
|
|
{ 5, 17, -5, -17 },
|
|
{ 9, 29, -9, -29 },
|
|
{ 13, 42, -13, -42 },
|
|
{ 18, 60, -18, -60 },
|
|
{ 24, 80, -24, -80 },
|
|
{ 33, 106, -33, -106 },
|
|
{ 47, 183, -47, -183 }
|
|
};
|
|
|
|
const int flipBit = (int)getBit(src, 32);
|
|
const deUint32 table[2] = { getBits(src, 37, 39), getBits(src, 34, 36) };
|
|
deUint8 baseR[2];
|
|
deUint8 baseG[2];
|
|
deUint8 baseB[2];
|
|
|
|
if (mode == MODE_INDIVIDUAL)
|
|
{
|
|
// Individual mode, initial values.
|
|
baseR[0] = extend4To8((deUint8)getBits(src, 60, 63));
|
|
baseR[1] = extend4To8((deUint8)getBits(src, 56, 59));
|
|
baseG[0] = extend4To8((deUint8)getBits(src, 52, 55));
|
|
baseG[1] = extend4To8((deUint8)getBits(src, 48, 51));
|
|
baseB[0] = extend4To8((deUint8)getBits(src, 44, 47));
|
|
baseB[1] = extend4To8((deUint8)getBits(src, 40, 43));
|
|
}
|
|
else
|
|
{
|
|
// Differential mode, initial values.
|
|
baseR[0] = extend5To8(selBR);
|
|
baseG[0] = extend5To8(selBG);
|
|
baseB[0] = extend5To8(selBB);
|
|
|
|
baseR[1] = extend5To8((deUint8)(selBR + selDR));
|
|
baseG[1] = extend5To8((deUint8)(selBG + selDG));
|
|
baseB[1] = extend5To8((deUint8)(selBB + selDB));
|
|
}
|
|
|
|
// Write final pixels for individual or differential mode.
|
|
for (int pixelNdx = 0; pixelNdx < ETC2_BLOCK_HEIGHT*ETC2_BLOCK_WIDTH; pixelNdx++)
|
|
{
|
|
const int x = pixelNdx / ETC2_BLOCK_HEIGHT;
|
|
const int y = pixelNdx % ETC2_BLOCK_HEIGHT;
|
|
const int dstOffset = (y*ETC2_BLOCK_WIDTH + x)*ETC2_UNCOMPRESSED_PIXEL_SIZE_RGB8;
|
|
const int subBlock = ((flipBit ? y : x) >= 2) ? 1 : 0;
|
|
const deUint32 tableNdx = table[subBlock];
|
|
const deUint32 modifierNdx = (getBit(src, 16+pixelNdx) << 1) | getBit(src, pixelNdx);
|
|
const int alphaDstOffset = (y*ETC2_BLOCK_WIDTH + x)*ETC2_UNCOMPRESSED_PIXEL_SIZE_A8; // Only needed for PUNCHTHROUGH version.
|
|
|
|
// If doing PUNCHTHROUGH version (alphaMode), opaque bit may affect colors.
|
|
if (alphaMode && diffOpaqueBit == 0 && modifierNdx == 2)
|
|
{
|
|
dst[dstOffset+0] = 0;
|
|
dst[dstOffset+1] = 0;
|
|
dst[dstOffset+2] = 0;
|
|
alphaDst[alphaDstOffset] = 0;
|
|
}
|
|
else
|
|
{
|
|
int modifier;
|
|
|
|
// PUNCHTHROUGH version and opaque bit may also affect modifiers.
|
|
if (alphaMode && diffOpaqueBit == 0 && (modifierNdx == 0 || modifierNdx == 2))
|
|
modifier = 0;
|
|
else
|
|
modifier = modifierTable[tableNdx][modifierNdx];
|
|
|
|
dst[dstOffset+0] = (deUint8)deClamp32((int)baseR[subBlock] + modifier, 0, 255);
|
|
dst[dstOffset+1] = (deUint8)deClamp32((int)baseG[subBlock] + modifier, 0, 255);
|
|
dst[dstOffset+2] = (deUint8)deClamp32((int)baseB[subBlock] + modifier, 0, 255);
|
|
|
|
if (alphaMode)
|
|
alphaDst[alphaDstOffset] = 255;
|
|
}
|
|
}
|
|
}
|
|
else if (mode == MODE_T || mode == MODE_H)
|
|
{
|
|
// T and H modes have some steps in common, handle them here.
|
|
static const int distTable[8] = { 3, 6, 11, 16, 23, 32, 41, 64 };
|
|
|
|
deUint8 paintR[4];
|
|
deUint8 paintG[4];
|
|
deUint8 paintB[4];
|
|
|
|
if (mode == MODE_T)
|
|
{
|
|
// T mode, calculate paint values.
|
|
const deUint8 R1a = (deUint8)getBits(src, 59, 60);
|
|
const deUint8 R1b = (deUint8)getBits(src, 56, 57);
|
|
const deUint8 G1 = (deUint8)getBits(src, 52, 55);
|
|
const deUint8 B1 = (deUint8)getBits(src, 48, 51);
|
|
const deUint8 R2 = (deUint8)getBits(src, 44, 47);
|
|
const deUint8 G2 = (deUint8)getBits(src, 40, 43);
|
|
const deUint8 B2 = (deUint8)getBits(src, 36, 39);
|
|
const deUint32 distNdx = (getBits(src, 34, 35) << 1) | getBit(src, 32);
|
|
const int dist = distTable[distNdx];
|
|
|
|
paintR[0] = extend4To8((deUint8)((R1a << 2) | R1b));
|
|
paintG[0] = extend4To8(G1);
|
|
paintB[0] = extend4To8(B1);
|
|
paintR[2] = extend4To8(R2);
|
|
paintG[2] = extend4To8(G2);
|
|
paintB[2] = extend4To8(B2);
|
|
paintR[1] = (deUint8)deClamp32((int)paintR[2] + dist, 0, 255);
|
|
paintG[1] = (deUint8)deClamp32((int)paintG[2] + dist, 0, 255);
|
|
paintB[1] = (deUint8)deClamp32((int)paintB[2] + dist, 0, 255);
|
|
paintR[3] = (deUint8)deClamp32((int)paintR[2] - dist, 0, 255);
|
|
paintG[3] = (deUint8)deClamp32((int)paintG[2] - dist, 0, 255);
|
|
paintB[3] = (deUint8)deClamp32((int)paintB[2] - dist, 0, 255);
|
|
}
|
|
else
|
|
{
|
|
// H mode, calculate paint values.
|
|
const deUint8 R1 = (deUint8)getBits(src, 59, 62);
|
|
const deUint8 G1a = (deUint8)getBits(src, 56, 58);
|
|
const deUint8 G1b = (deUint8)getBit(src, 52);
|
|
const deUint8 B1a = (deUint8)getBit(src, 51);
|
|
const deUint8 B1b = (deUint8)getBits(src, 47, 49);
|
|
const deUint8 R2 = (deUint8)getBits(src, 43, 46);
|
|
const deUint8 G2 = (deUint8)getBits(src, 39, 42);
|
|
const deUint8 B2 = (deUint8)getBits(src, 35, 38);
|
|
deUint8 baseR[2];
|
|
deUint8 baseG[2];
|
|
deUint8 baseB[2];
|
|
deUint32 baseValue[2];
|
|
deUint32 distNdx;
|
|
int dist;
|
|
|
|
baseR[0] = extend4To8(R1);
|
|
baseG[0] = extend4To8((deUint8)((G1a << 1) | G1b));
|
|
baseB[0] = extend4To8((deUint8)((B1a << 3) | B1b));
|
|
baseR[1] = extend4To8(R2);
|
|
baseG[1] = extend4To8(G2);
|
|
baseB[1] = extend4To8(B2);
|
|
baseValue[0] = (((deUint32)baseR[0]) << 16) | (((deUint32)baseG[0]) << 8) | baseB[0];
|
|
baseValue[1] = (((deUint32)baseR[1]) << 16) | (((deUint32)baseG[1]) << 8) | baseB[1];
|
|
distNdx = (getBit(src, 34) << 2) | (getBit(src, 32) << 1) | (deUint32)(baseValue[0] >= baseValue[1]);
|
|
dist = distTable[distNdx];
|
|
|
|
paintR[0] = (deUint8)deClamp32((int)baseR[0] + dist, 0, 255);
|
|
paintG[0] = (deUint8)deClamp32((int)baseG[0] + dist, 0, 255);
|
|
paintB[0] = (deUint8)deClamp32((int)baseB[0] + dist, 0, 255);
|
|
paintR[1] = (deUint8)deClamp32((int)baseR[0] - dist, 0, 255);
|
|
paintG[1] = (deUint8)deClamp32((int)baseG[0] - dist, 0, 255);
|
|
paintB[1] = (deUint8)deClamp32((int)baseB[0] - dist, 0, 255);
|
|
paintR[2] = (deUint8)deClamp32((int)baseR[1] + dist, 0, 255);
|
|
paintG[2] = (deUint8)deClamp32((int)baseG[1] + dist, 0, 255);
|
|
paintB[2] = (deUint8)deClamp32((int)baseB[1] + dist, 0, 255);
|
|
paintR[3] = (deUint8)deClamp32((int)baseR[1] - dist, 0, 255);
|
|
paintG[3] = (deUint8)deClamp32((int)baseG[1] - dist, 0, 255);
|
|
paintB[3] = (deUint8)deClamp32((int)baseB[1] - dist, 0, 255);
|
|
}
|
|
|
|
// Write final pixels for T or H mode.
|
|
for (int pixelNdx = 0; pixelNdx < ETC2_BLOCK_HEIGHT*ETC2_BLOCK_WIDTH; pixelNdx++)
|
|
{
|
|
const int x = pixelNdx / ETC2_BLOCK_HEIGHT;
|
|
const int y = pixelNdx % ETC2_BLOCK_HEIGHT;
|
|
const int dstOffset = (y*ETC2_BLOCK_WIDTH + x)*ETC2_UNCOMPRESSED_PIXEL_SIZE_RGB8;
|
|
const deUint32 paintNdx = (getBit(src, 16+pixelNdx) << 1) | getBit(src, pixelNdx);
|
|
const int alphaDstOffset = (y*ETC2_BLOCK_WIDTH + x)*ETC2_UNCOMPRESSED_PIXEL_SIZE_A8; // Only needed for PUNCHTHROUGH version.
|
|
|
|
if (alphaMode && diffOpaqueBit == 0 && paintNdx == 2)
|
|
{
|
|
dst[dstOffset+0] = 0;
|
|
dst[dstOffset+1] = 0;
|
|
dst[dstOffset+2] = 0;
|
|
alphaDst[alphaDstOffset] = 0;
|
|
}
|
|
else
|
|
{
|
|
dst[dstOffset+0] = (deUint8)deClamp32((int)paintR[paintNdx], 0, 255);
|
|
dst[dstOffset+1] = (deUint8)deClamp32((int)paintG[paintNdx], 0, 255);
|
|
dst[dstOffset+2] = (deUint8)deClamp32((int)paintB[paintNdx], 0, 255);
|
|
|
|
if (alphaMode)
|
|
alphaDst[alphaDstOffset] = 255;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// Planar mode.
|
|
const deUint8 GO1 = (deUint8)getBit(src, 56);
|
|
const deUint8 GO2 = (deUint8)getBits(src, 49, 54);
|
|
const deUint8 BO1 = (deUint8)getBit(src, 48);
|
|
const deUint8 BO2 = (deUint8)getBits(src, 43, 44);
|
|
const deUint8 BO3 = (deUint8)getBits(src, 39, 41);
|
|
const deUint8 RH1 = (deUint8)getBits(src, 34, 38);
|
|
const deUint8 RH2 = (deUint8)getBit(src, 32);
|
|
const deUint8 RO = extend6To8((deUint8)getBits(src, 57, 62));
|
|
const deUint8 GO = extend7To8((deUint8)((GO1 << 6) | GO2));
|
|
const deUint8 BO = extend6To8((deUint8)((BO1 << 5) | (BO2 << 3) | BO3));
|
|
const deUint8 RH = extend6To8((deUint8)((RH1 << 1) | RH2));
|
|
const deUint8 GH = extend7To8((deUint8)getBits(src, 25, 31));
|
|
const deUint8 BH = extend6To8((deUint8)getBits(src, 19, 24));
|
|
const deUint8 RV = extend6To8((deUint8)getBits(src, 13, 18));
|
|
const deUint8 GV = extend7To8((deUint8)getBits(src, 6, 12));
|
|
const deUint8 BV = extend6To8((deUint8)getBits(src, 0, 5));
|
|
|
|
// Write final pixels for planar mode.
|
|
for (int y = 0; y < 4; y++)
|
|
{
|
|
for (int x = 0; x < 4; x++)
|
|
{
|
|
const int dstOffset = (y*ETC2_BLOCK_WIDTH + x)*ETC2_UNCOMPRESSED_PIXEL_SIZE_RGB8;
|
|
const int unclampedR = (x * ((int)RH-(int)RO) + y * ((int)RV-(int)RO) + 4*(int)RO + 2) >> 2;
|
|
const int unclampedG = (x * ((int)GH-(int)GO) + y * ((int)GV-(int)GO) + 4*(int)GO + 2) >> 2;
|
|
const int unclampedB = (x * ((int)BH-(int)BO) + y * ((int)BV-(int)BO) + 4*(int)BO + 2) >> 2;
|
|
const int alphaDstOffset = (y*ETC2_BLOCK_WIDTH + x)*ETC2_UNCOMPRESSED_PIXEL_SIZE_A8; // Only needed for PUNCHTHROUGH version.
|
|
|
|
dst[dstOffset+0] = (deUint8)deClamp32(unclampedR, 0, 255);
|
|
dst[dstOffset+1] = (deUint8)deClamp32(unclampedG, 0, 255);
|
|
dst[dstOffset+2] = (deUint8)deClamp32(unclampedB, 0, 255);
|
|
|
|
if (alphaMode)
|
|
alphaDst[alphaDstOffset] = 255;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void decompressEAC8Block (deUint8 dst[ETC2_UNCOMPRESSED_BLOCK_SIZE_A8], deUint64 src)
|
|
{
|
|
static const int modifierTable[16][8] =
|
|
{
|
|
{-3, -6, -9, -15, 2, 5, 8, 14},
|
|
{-3, -7, -10, -13, 2, 6, 9, 12},
|
|
{-2, -5, -8, -13, 1, 4, 7, 12},
|
|
{-2, -4, -6, -13, 1, 3, 5, 12},
|
|
{-3, -6, -8, -12, 2, 5, 7, 11},
|
|
{-3, -7, -9, -11, 2, 6, 8, 10},
|
|
{-4, -7, -8, -11, 3, 6, 7, 10},
|
|
{-3, -5, -8, -11, 2, 4, 7, 10},
|
|
{-2, -6, -8, -10, 1, 5, 7, 9},
|
|
{-2, -5, -8, -10, 1, 4, 7, 9},
|
|
{-2, -4, -8, -10, 1, 3, 7, 9},
|
|
{-2, -5, -7, -10, 1, 4, 6, 9},
|
|
{-3, -4, -7, -10, 2, 3, 6, 9},
|
|
{-1, -2, -3, -10, 0, 1, 2, 9},
|
|
{-4, -6, -8, -9, 3, 5, 7, 8},
|
|
{-3, -5, -7, -9, 2, 4, 6, 8}
|
|
};
|
|
|
|
const deUint8 baseCodeword = (deUint8)getBits(src, 56, 63);
|
|
const deUint8 multiplier = (deUint8)getBits(src, 52, 55);
|
|
const deUint32 tableNdx = getBits(src, 48, 51);
|
|
|
|
for (int pixelNdx = 0; pixelNdx < ETC2_BLOCK_HEIGHT*ETC2_BLOCK_WIDTH; pixelNdx++)
|
|
{
|
|
const int x = pixelNdx / ETC2_BLOCK_HEIGHT;
|
|
const int y = pixelNdx % ETC2_BLOCK_HEIGHT;
|
|
const int dstOffset = (y*ETC2_BLOCK_WIDTH + x)*ETC2_UNCOMPRESSED_PIXEL_SIZE_A8;
|
|
const int pixelBitNdx = 45 - 3*pixelNdx;
|
|
const deUint32 modifierNdx = (getBit(src, pixelBitNdx + 2) << 2) | (getBit(src, pixelBitNdx + 1) << 1) | getBit(src, pixelBitNdx);
|
|
const int modifier = modifierTable[tableNdx][modifierNdx];
|
|
|
|
dst[dstOffset] = (deUint8)deClamp32((int)baseCodeword + (int)multiplier*modifier, 0, 255);
|
|
}
|
|
}
|
|
|
|
void decompressEAC11Block (deUint8 dst[ETC2_UNCOMPRESSED_BLOCK_SIZE_R11], deUint64 src, bool signedMode)
|
|
{
|
|
static const int modifierTable[16][8] =
|
|
{
|
|
{-3, -6, -9, -15, 2, 5, 8, 14},
|
|
{-3, -7, -10, -13, 2, 6, 9, 12},
|
|
{-2, -5, -8, -13, 1, 4, 7, 12},
|
|
{-2, -4, -6, -13, 1, 3, 5, 12},
|
|
{-3, -6, -8, -12, 2, 5, 7, 11},
|
|
{-3, -7, -9, -11, 2, 6, 8, 10},
|
|
{-4, -7, -8, -11, 3, 6, 7, 10},
|
|
{-3, -5, -8, -11, 2, 4, 7, 10},
|
|
{-2, -6, -8, -10, 1, 5, 7, 9},
|
|
{-2, -5, -8, -10, 1, 4, 7, 9},
|
|
{-2, -4, -8, -10, 1, 3, 7, 9},
|
|
{-2, -5, -7, -10, 1, 4, 6, 9},
|
|
{-3, -4, -7, -10, 2, 3, 6, 9},
|
|
{-1, -2, -3, -10, 0, 1, 2, 9},
|
|
{-4, -6, -8, -9, 3, 5, 7, 8},
|
|
{-3, -5, -7, -9, 2, 4, 6, 8}
|
|
};
|
|
|
|
const deInt32 multiplier = (deInt32)getBits(src, 52, 55);
|
|
const deInt32 tableNdx = (deInt32)getBits(src, 48, 51);
|
|
deInt32 baseCodeword = (deInt32)getBits(src, 56, 63);
|
|
|
|
if (signedMode)
|
|
{
|
|
if (baseCodeword > 127)
|
|
baseCodeword -= 256;
|
|
if (baseCodeword == -128)
|
|
baseCodeword = -127;
|
|
}
|
|
|
|
for (int pixelNdx = 0; pixelNdx < ETC2_BLOCK_HEIGHT*ETC2_BLOCK_WIDTH; pixelNdx++)
|
|
{
|
|
const int x = pixelNdx / ETC2_BLOCK_HEIGHT;
|
|
const int y = pixelNdx % ETC2_BLOCK_HEIGHT;
|
|
const int dstOffset = (y*ETC2_BLOCK_WIDTH + x)*ETC2_UNCOMPRESSED_PIXEL_SIZE_R11;
|
|
const int pixelBitNdx = 45 - 3*pixelNdx;
|
|
const deUint32 modifierNdx = (getBit(src, pixelBitNdx + 2) << 2) | (getBit(src, pixelBitNdx + 1) << 1) | getBit(src, pixelBitNdx);
|
|
const int modifier = modifierTable[tableNdx][modifierNdx];
|
|
|
|
if (signedMode)
|
|
{
|
|
deInt16 value;
|
|
|
|
if (multiplier != 0)
|
|
value = (deInt16)deClamp32(baseCodeword*8 + multiplier*modifier*8, -1023, 1023);
|
|
else
|
|
value = (deInt16)deClamp32(baseCodeword*8 + modifier, -1023, 1023);
|
|
|
|
*((deInt16*)(dst + dstOffset)) = value;
|
|
}
|
|
else
|
|
{
|
|
deUint16 value;
|
|
|
|
if (multiplier != 0)
|
|
value = (deUint16)deClamp32(baseCodeword*8 + 4 + multiplier*modifier*8, 0, 2047);
|
|
else
|
|
value= (deUint16)deClamp32(baseCodeword*8 + 4 + modifier, 0, 2047);
|
|
|
|
*((deUint16*)(dst + dstOffset)) = value;
|
|
}
|
|
}
|
|
}
|
|
|
|
} // EtcDecompressInternal
|
|
|
|
void decompressETC1 (const PixelBufferAccess& dst, const deUint8* src)
|
|
{
|
|
using namespace EtcDecompressInternal;
|
|
|
|
deUint8* const dstPtr = (deUint8*)dst.getDataPtr();
|
|
const deUint64 compressedBlock = get64BitBlock(src, 0);
|
|
|
|
decompressETC1Block(dstPtr, compressedBlock);
|
|
}
|
|
|
|
void decompressETC2 (const PixelBufferAccess& dst, const deUint8* src)
|
|
{
|
|
using namespace EtcDecompressInternal;
|
|
|
|
deUint8* const dstPtr = (deUint8*)dst.getDataPtr();
|
|
const deUint64 compressedBlock = get64BitBlock(src, 0);
|
|
|
|
decompressETC2Block(dstPtr, compressedBlock, NULL, false);
|
|
}
|
|
|
|
void decompressETC2_EAC_RGBA8 (const PixelBufferAccess& dst, const deUint8* src)
|
|
{
|
|
using namespace EtcDecompressInternal;
|
|
|
|
deUint8* const dstPtr = (deUint8*)dst.getDataPtr();
|
|
const int dstRowPitch = dst.getRowPitch();
|
|
const int dstPixelSize = ETC2_UNCOMPRESSED_PIXEL_SIZE_RGBA8;
|
|
|
|
const deUint64 compressedBlockAlpha = get128BitBlockStart(src, 0);
|
|
const deUint64 compressedBlockRGB = get128BitBlockEnd(src, 0);
|
|
deUint8 uncompressedBlockAlpha[ETC2_UNCOMPRESSED_BLOCK_SIZE_A8];
|
|
deUint8 uncompressedBlockRGB[ETC2_UNCOMPRESSED_BLOCK_SIZE_RGB8];
|
|
|
|
// Decompress.
|
|
decompressETC2Block(uncompressedBlockRGB, compressedBlockRGB, NULL, false);
|
|
decompressEAC8Block(uncompressedBlockAlpha, compressedBlockAlpha);
|
|
|
|
// Write to dst.
|
|
for (int y = 0; y < (int)ETC2_BLOCK_HEIGHT; y++)
|
|
{
|
|
for (int x = 0; x < (int)ETC2_BLOCK_WIDTH; x++)
|
|
{
|
|
const deUint8* const srcPixelRGB = &uncompressedBlockRGB[(y*ETC2_BLOCK_WIDTH + x)*ETC2_UNCOMPRESSED_PIXEL_SIZE_RGB8];
|
|
const deUint8* const srcPixelAlpha = &uncompressedBlockAlpha[(y*ETC2_BLOCK_WIDTH + x)*ETC2_UNCOMPRESSED_PIXEL_SIZE_A8];
|
|
deUint8* const dstPixel = dstPtr + y*dstRowPitch + x*dstPixelSize;
|
|
|
|
DE_STATIC_ASSERT(ETC2_UNCOMPRESSED_PIXEL_SIZE_RGBA8 == 4);
|
|
dstPixel[0] = srcPixelRGB[0];
|
|
dstPixel[1] = srcPixelRGB[1];
|
|
dstPixel[2] = srcPixelRGB[2];
|
|
dstPixel[3] = srcPixelAlpha[0];
|
|
}
|
|
}
|
|
}
|
|
|
|
void decompressETC2_RGB8_PUNCHTHROUGH_ALPHA1 (const PixelBufferAccess& dst, const deUint8* src)
|
|
{
|
|
using namespace EtcDecompressInternal;
|
|
|
|
deUint8* const dstPtr = (deUint8*)dst.getDataPtr();
|
|
const int dstRowPitch = dst.getRowPitch();
|
|
const int dstPixelSize = ETC2_UNCOMPRESSED_PIXEL_SIZE_RGBA8;
|
|
|
|
const deUint64 compressedBlockRGBA = get64BitBlock(src, 0);
|
|
deUint8 uncompressedBlockRGB[ETC2_UNCOMPRESSED_BLOCK_SIZE_RGB8];
|
|
deUint8 uncompressedBlockAlpha[ETC2_UNCOMPRESSED_BLOCK_SIZE_A8];
|
|
|
|
// Decompress.
|
|
decompressETC2Block(uncompressedBlockRGB, compressedBlockRGBA, uncompressedBlockAlpha, DE_TRUE);
|
|
|
|
// Write to dst.
|
|
for (int y = 0; y < (int)ETC2_BLOCK_HEIGHT; y++)
|
|
{
|
|
for (int x = 0; x < (int)ETC2_BLOCK_WIDTH; x++)
|
|
{
|
|
const deUint8* const srcPixel = &uncompressedBlockRGB[(y*ETC2_BLOCK_WIDTH + x)*ETC2_UNCOMPRESSED_PIXEL_SIZE_RGB8];
|
|
const deUint8* const srcPixelAlpha = &uncompressedBlockAlpha[(y*ETC2_BLOCK_WIDTH + x)*ETC2_UNCOMPRESSED_PIXEL_SIZE_A8];
|
|
deUint8* const dstPixel = dstPtr + y*dstRowPitch + x*dstPixelSize;
|
|
|
|
DE_STATIC_ASSERT(ETC2_UNCOMPRESSED_PIXEL_SIZE_RGBA8 == 4);
|
|
dstPixel[0] = srcPixel[0];
|
|
dstPixel[1] = srcPixel[1];
|
|
dstPixel[2] = srcPixel[2];
|
|
dstPixel[3] = srcPixelAlpha[0];
|
|
}
|
|
}
|
|
}
|
|
|
|
void decompressEAC_R11 (const PixelBufferAccess& dst, const deUint8* src, bool signedMode)
|
|
{
|
|
using namespace EtcDecompressInternal;
|
|
|
|
deUint8* const dstPtr = (deUint8*)dst.getDataPtr();
|
|
const int dstRowPitch = dst.getRowPitch();
|
|
const int dstPixelSize = ETC2_UNCOMPRESSED_PIXEL_SIZE_R11;
|
|
|
|
const deUint64 compressedBlock = get64BitBlock(src, 0);
|
|
deUint8 uncompressedBlock[ETC2_UNCOMPRESSED_BLOCK_SIZE_R11];
|
|
|
|
// Decompress.
|
|
decompressEAC11Block(uncompressedBlock, compressedBlock, signedMode);
|
|
|
|
// Write to dst.
|
|
for (int y = 0; y < (int)ETC2_BLOCK_HEIGHT; y++)
|
|
{
|
|
for (int x = 0; x < (int)ETC2_BLOCK_WIDTH; x++)
|
|
{
|
|
DE_STATIC_ASSERT(ETC2_UNCOMPRESSED_PIXEL_SIZE_R11 == 2);
|
|
|
|
if (signedMode)
|
|
{
|
|
const deInt16* const srcPixel = (deInt16*)&uncompressedBlock[(y*ETC2_BLOCK_WIDTH + x)*ETC2_UNCOMPRESSED_PIXEL_SIZE_R11];
|
|
deInt16* const dstPixel = (deInt16*)(dstPtr + y*dstRowPitch + x*dstPixelSize);
|
|
|
|
dstPixel[0] = extend11To16WithSign(srcPixel[0]);
|
|
}
|
|
else
|
|
{
|
|
const deUint16* const srcPixel = (deUint16*)&uncompressedBlock[(y*ETC2_BLOCK_WIDTH + x)*ETC2_UNCOMPRESSED_PIXEL_SIZE_R11];
|
|
deUint16* const dstPixel = (deUint16*)(dstPtr + y*dstRowPitch + x*dstPixelSize);
|
|
|
|
dstPixel[0] = extend11To16(srcPixel[0]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void decompressEAC_RG11 (const PixelBufferAccess& dst, const deUint8* src, bool signedMode)
|
|
{
|
|
using namespace EtcDecompressInternal;
|
|
|
|
deUint8* const dstPtr = (deUint8*)dst.getDataPtr();
|
|
const int dstRowPitch = dst.getRowPitch();
|
|
const int dstPixelSize = ETC2_UNCOMPRESSED_PIXEL_SIZE_RG11;
|
|
|
|
const deUint64 compressedBlockR = get128BitBlockStart(src, 0);
|
|
const deUint64 compressedBlockG = get128BitBlockEnd(src, 0);
|
|
deUint8 uncompressedBlockR[ETC2_UNCOMPRESSED_BLOCK_SIZE_R11];
|
|
deUint8 uncompressedBlockG[ETC2_UNCOMPRESSED_BLOCK_SIZE_R11];
|
|
|
|
// Decompress.
|
|
decompressEAC11Block(uncompressedBlockR, compressedBlockR, signedMode);
|
|
decompressEAC11Block(uncompressedBlockG, compressedBlockG, signedMode);
|
|
|
|
// Write to dst.
|
|
for (int y = 0; y < (int)ETC2_BLOCK_HEIGHT; y++)
|
|
{
|
|
for (int x = 0; x < (int)ETC2_BLOCK_WIDTH; x++)
|
|
{
|
|
DE_STATIC_ASSERT(ETC2_UNCOMPRESSED_PIXEL_SIZE_RG11 == 4);
|
|
|
|
if (signedMode)
|
|
{
|
|
const deInt16* const srcPixelR = (deInt16*)&uncompressedBlockR[(y*ETC2_BLOCK_WIDTH + x)*ETC2_UNCOMPRESSED_PIXEL_SIZE_R11];
|
|
const deInt16* const srcPixelG = (deInt16*)&uncompressedBlockG[(y*ETC2_BLOCK_WIDTH + x)*ETC2_UNCOMPRESSED_PIXEL_SIZE_R11];
|
|
deInt16* const dstPixel = (deInt16*)(dstPtr + y*dstRowPitch + x*dstPixelSize);
|
|
|
|
dstPixel[0] = extend11To16WithSign(srcPixelR[0]);
|
|
dstPixel[1] = extend11To16WithSign(srcPixelG[0]);
|
|
}
|
|
else
|
|
{
|
|
const deUint16* const srcPixelR = (deUint16*)&uncompressedBlockR[(y*ETC2_BLOCK_WIDTH + x)*ETC2_UNCOMPRESSED_PIXEL_SIZE_R11];
|
|
const deUint16* const srcPixelG = (deUint16*)&uncompressedBlockG[(y*ETC2_BLOCK_WIDTH + x)*ETC2_UNCOMPRESSED_PIXEL_SIZE_R11];
|
|
deUint16* const dstPixel = (deUint16*)(dstPtr + y*dstRowPitch + x*dstPixelSize);
|
|
|
|
dstPixel[0] = extend11To16(srcPixelR[0]);
|
|
dstPixel[1] = extend11To16(srcPixelG[0]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void decompressBlock (CompressedTexFormat format, const PixelBufferAccess& dst, const deUint8* src, const TexDecompressionParams& params)
|
|
{
|
|
// No 3D blocks supported right now
|
|
DE_ASSERT(dst.getDepth() == 1);
|
|
|
|
switch (format)
|
|
{
|
|
case COMPRESSEDTEXFORMAT_ETC1_RGB8: decompressETC1 (dst, src); break;
|
|
case COMPRESSEDTEXFORMAT_EAC_R11: decompressEAC_R11 (dst, src, false); break;
|
|
case COMPRESSEDTEXFORMAT_EAC_SIGNED_R11: decompressEAC_R11 (dst, src, true); break;
|
|
case COMPRESSEDTEXFORMAT_EAC_RG11: decompressEAC_RG11 (dst, src, false); break;
|
|
case COMPRESSEDTEXFORMAT_EAC_SIGNED_RG11: decompressEAC_RG11 (dst, src, true); break;
|
|
case COMPRESSEDTEXFORMAT_ETC2_RGB8: decompressETC2 (dst, src); break;
|
|
case COMPRESSEDTEXFORMAT_ETC2_SRGB8: decompressETC2 (dst, src); break;
|
|
case COMPRESSEDTEXFORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1: decompressETC2_RGB8_PUNCHTHROUGH_ALPHA1 (dst, src); break;
|
|
case COMPRESSEDTEXFORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1: decompressETC2_RGB8_PUNCHTHROUGH_ALPHA1 (dst, src); break;
|
|
case COMPRESSEDTEXFORMAT_ETC2_EAC_RGBA8: decompressETC2_EAC_RGBA8 (dst, src); break;
|
|
case COMPRESSEDTEXFORMAT_ETC2_EAC_SRGB8_ALPHA8: decompressETC2_EAC_RGBA8 (dst, src); break;
|
|
|
|
case COMPRESSEDTEXFORMAT_ASTC_4x4_RGBA:
|
|
case COMPRESSEDTEXFORMAT_ASTC_5x4_RGBA:
|
|
case COMPRESSEDTEXFORMAT_ASTC_5x5_RGBA:
|
|
case COMPRESSEDTEXFORMAT_ASTC_6x5_RGBA:
|
|
case COMPRESSEDTEXFORMAT_ASTC_6x6_RGBA:
|
|
case COMPRESSEDTEXFORMAT_ASTC_8x5_RGBA:
|
|
case COMPRESSEDTEXFORMAT_ASTC_8x6_RGBA:
|
|
case COMPRESSEDTEXFORMAT_ASTC_8x8_RGBA:
|
|
case COMPRESSEDTEXFORMAT_ASTC_10x5_RGBA:
|
|
case COMPRESSEDTEXFORMAT_ASTC_10x6_RGBA:
|
|
case COMPRESSEDTEXFORMAT_ASTC_10x8_RGBA:
|
|
case COMPRESSEDTEXFORMAT_ASTC_10x10_RGBA:
|
|
case COMPRESSEDTEXFORMAT_ASTC_12x10_RGBA:
|
|
case COMPRESSEDTEXFORMAT_ASTC_12x12_RGBA:
|
|
case COMPRESSEDTEXFORMAT_ASTC_4x4_SRGB8_ALPHA8:
|
|
case COMPRESSEDTEXFORMAT_ASTC_5x4_SRGB8_ALPHA8:
|
|
case COMPRESSEDTEXFORMAT_ASTC_5x5_SRGB8_ALPHA8:
|
|
case COMPRESSEDTEXFORMAT_ASTC_6x5_SRGB8_ALPHA8:
|
|
case COMPRESSEDTEXFORMAT_ASTC_6x6_SRGB8_ALPHA8:
|
|
case COMPRESSEDTEXFORMAT_ASTC_8x5_SRGB8_ALPHA8:
|
|
case COMPRESSEDTEXFORMAT_ASTC_8x6_SRGB8_ALPHA8:
|
|
case COMPRESSEDTEXFORMAT_ASTC_8x8_SRGB8_ALPHA8:
|
|
case COMPRESSEDTEXFORMAT_ASTC_10x5_SRGB8_ALPHA8:
|
|
case COMPRESSEDTEXFORMAT_ASTC_10x6_SRGB8_ALPHA8:
|
|
case COMPRESSEDTEXFORMAT_ASTC_10x8_SRGB8_ALPHA8:
|
|
case COMPRESSEDTEXFORMAT_ASTC_10x10_SRGB8_ALPHA8:
|
|
case COMPRESSEDTEXFORMAT_ASTC_12x10_SRGB8_ALPHA8:
|
|
case COMPRESSEDTEXFORMAT_ASTC_12x12_SRGB8_ALPHA8:
|
|
astc::decompress(dst, src, format, params.astcMode);
|
|
break;
|
|
|
|
default:
|
|
DE_ASSERT(false);
|
|
break;
|
|
}
|
|
}
|
|
|
|
int componentSum (const IVec3& vec)
|
|
{
|
|
return vec.x() + vec.y() + vec.z();
|
|
}
|
|
|
|
} // anonymous
|
|
|
|
void decompress (const PixelBufferAccess& dst, CompressedTexFormat fmt, const deUint8* src, const TexDecompressionParams& params)
|
|
{
|
|
const int blockSize = getBlockSize(fmt);
|
|
const IVec3 blockPixelSize (getBlockPixelSize(fmt));
|
|
const IVec3 blockCount (deDivRoundUp32(dst.getWidth(), blockPixelSize.x()),
|
|
deDivRoundUp32(dst.getHeight(), blockPixelSize.y()),
|
|
deDivRoundUp32(dst.getDepth(), blockPixelSize.z()));
|
|
const IVec3 blockPitches (blockSize, blockSize * blockCount.x(), blockSize * blockCount.x() * blockCount.y());
|
|
|
|
std::vector<deUint8> uncompressedBlock (dst.getFormat().getPixelSize() * blockPixelSize.x() * blockPixelSize.y() * blockPixelSize.z());
|
|
const PixelBufferAccess blockAccess (getUncompressedFormat(fmt), blockPixelSize.x(), blockPixelSize.y(), blockPixelSize.z(), &uncompressedBlock[0]);
|
|
|
|
DE_ASSERT(dst.getFormat() == getUncompressedFormat(fmt));
|
|
|
|
for (int blockZ = 0; blockZ < blockCount.z(); blockZ++)
|
|
for (int blockY = 0; blockY < blockCount.y(); blockY++)
|
|
for (int blockX = 0; blockX < blockCount.x(); blockX++)
|
|
{
|
|
const IVec3 blockPos (blockX, blockY, blockZ);
|
|
const deUint8* const blockPtr = src + componentSum(blockPos * blockPitches);
|
|
const IVec3 copySize (de::min(blockPixelSize.x(), dst.getWidth() - blockPos.x() * blockPixelSize.x()),
|
|
de::min(blockPixelSize.y(), dst.getHeight() - blockPos.y() * blockPixelSize.y()),
|
|
de::min(blockPixelSize.z(), dst.getDepth() - blockPos.z() * blockPixelSize.z()));
|
|
const IVec3 dstPixelPos = blockPos * blockPixelSize;
|
|
|
|
decompressBlock(fmt, blockAccess, blockPtr, params);
|
|
|
|
copy(getSubregion(dst, dstPixelPos.x(), dstPixelPos.y(), dstPixelPos.z(), copySize.x(), copySize.y(), copySize.z()), getSubregion(blockAccess, 0, 0, 0, copySize.x(), copySize.y(), copySize.z()));
|
|
}
|
|
}
|
|
|
|
CompressedTexture::CompressedTexture (void)
|
|
: m_format (COMPRESSEDTEXFORMAT_LAST)
|
|
, m_width (0)
|
|
, m_height (0)
|
|
, m_depth (0)
|
|
{
|
|
}
|
|
|
|
CompressedTexture::CompressedTexture (CompressedTexFormat format, int width, int height, int depth)
|
|
: m_format (COMPRESSEDTEXFORMAT_LAST)
|
|
, m_width (0)
|
|
, m_height (0)
|
|
, m_depth (0)
|
|
{
|
|
setStorage(format, width, height, depth);
|
|
}
|
|
|
|
CompressedTexture::~CompressedTexture (void)
|
|
{
|
|
}
|
|
|
|
void CompressedTexture::setStorage (CompressedTexFormat format, int width, int height, int depth)
|
|
{
|
|
m_format = format;
|
|
m_width = width;
|
|
m_height = height;
|
|
m_depth = depth;
|
|
|
|
if (m_format != COMPRESSEDTEXFORMAT_LAST)
|
|
{
|
|
const IVec3 blockPixelSize = getBlockPixelSize(m_format);
|
|
const int blockSize = getBlockSize(m_format);
|
|
|
|
m_data.resize(deDivRoundUp32(m_width, blockPixelSize.x()) * deDivRoundUp32(m_height, blockPixelSize.y()) * deDivRoundUp32(m_depth, blockPixelSize.z()) * blockSize);
|
|
}
|
|
else
|
|
{
|
|
DE_ASSERT(m_format == COMPRESSEDTEXFORMAT_LAST);
|
|
DE_ASSERT(m_width == 0 && m_height == 0 && m_depth == 0);
|
|
m_data.resize(0);
|
|
}
|
|
}
|
|
|
|
/*--------------------------------------------------------------------*//*!
|
|
* \brief Decode to uncompressed pixel data
|
|
* \param dst Destination buffer
|
|
*//*--------------------------------------------------------------------*/
|
|
void CompressedTexture::decompress (const PixelBufferAccess& dst, const TexDecompressionParams& params) const
|
|
{
|
|
DE_ASSERT(dst.getWidth() == m_width && dst.getHeight() == m_height && dst.getDepth() == m_depth);
|
|
DE_ASSERT(dst.getFormat() == getUncompressedFormat(m_format));
|
|
|
|
tcu::decompress(dst, m_format, &m_data[0], params);
|
|
}
|
|
|
|
} // tcu
|