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chromium / external / deqp / refs/heads/master / . / framework / common / tcuAstcUtil.cpp
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/*-------------------------------------------------------------------------
* drawElements Quality Program Tester Core
* ----------------------------------------
*
* Copyright 2016 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*//*!
* \file
* \brief ASTC Utilities.
*//*--------------------------------------------------------------------*/
#include "tcuAstcUtil.hpp"
#include "deFloat16.h"
#include "deRandom.hpp"
#include "deMeta.hpp"
#include <algorithm>
namespace tcu
{
namespace astc
{
using std::vector;
namespace
{
// Common utilities
enum
{
MAX_BLOCK_WIDTH = 12,
MAX_BLOCK_HEIGHT = 12
};
inline uint32_t getBit(uint32_t src, int ndx)
{
DE_ASSERT(de::inBounds(ndx, 0, 32));
return (src >> ndx) & 1;
}
inline uint32_t getBits(uint32_t src, int low, int high)
{
const int numBits = (high - low) + 1;
DE_ASSERT(de::inRange(numBits, 1, 32));
if (numBits < 32)
return (uint32_t)((src >> low) & ((1u << numBits) - 1));
else
return (uint32_t)((src >> low) & 0xFFFFFFFFu);
}
inline bool isBitSet(uint32_t src, int ndx)
{
return getBit(src, ndx) != 0;
}
inline uint32_t reverseBits(uint32_t src, int numBits)
{
DE_ASSERT(de::inRange(numBits, 0, 32));
uint32_t result = 0;
for (int i = 0; i < numBits; i++)
result |= ((src >> i) & 1) << (numBits - 1 - i);
return result;
}
inline uint32_t bitReplicationScale(uint32_t src, int numSrcBits, int numDstBits)
{
DE_ASSERT(numSrcBits <= numDstBits);
DE_ASSERT((src & ((1 << numSrcBits) - 1)) == src);
uint32_t dst = 0;
for (int shift = numDstBits - numSrcBits; shift > -numSrcBits; shift -= numSrcBits)
dst |= shift >= 0 ? src << shift : src >> -shift;
return dst;
}
inline int32_t signExtend(int32_t src, int numSrcBits)
{
DE_ASSERT(de::inRange(numSrcBits, 2, 31));
const bool negative = (src & (1 << (numSrcBits - 1))) != 0;
return src | (negative ? ~((1 << numSrcBits) - 1) : 0);
}
inline bool isFloat16InfOrNan(deFloat16 v)
{
return getBits(v, 10, 14) == 31;
}
enum ISEMode
{
ISEMODE_TRIT = 0,
ISEMODE_QUINT,
ISEMODE_PLAIN_BIT,
ISEMODE_LAST
};
struct ISEParams
{
ISEMode mode;
int numBits;
ISEParams(ISEMode mode_, int numBits_) : mode(mode_), numBits(numBits_)
{
}
};
inline int computeNumRequiredBits(const ISEParams &iseParams, int numValues)
{
switch (iseParams.mode)
{
case ISEMODE_TRIT:
return deDivRoundUp32(numValues * 8, 5) + numValues * iseParams.numBits;
case ISEMODE_QUINT:
return deDivRoundUp32(numValues * 7, 3) + numValues * iseParams.numBits;
case ISEMODE_PLAIN_BIT:
return numValues * iseParams.numBits;
default:
DE_ASSERT(false);
return -1;
}
}
ISEParams computeMaximumRangeISEParams(int numAvailableBits, int numValuesInSequence)
{
int curBitsForTritMode = 6;
int curBitsForQuintMode = 5;
int curBitsForPlainBitMode = 8;
while (true)
{
DE_ASSERT(curBitsForTritMode > 0 || curBitsForQuintMode > 0 || curBitsForPlainBitMode > 0);
const int tritRange = curBitsForTritMode > 0 ? (3 << curBitsForTritMode) - 1 : -1;
const int quintRange = curBitsForQuintMode > 0 ? (5 << curBitsForQuintMode) - 1 : -1;
const int plainBitRange = curBitsForPlainBitMode > 0 ? (1 << curBitsForPlainBitMode) - 1 : -1;
const int maxRange = de::max(de::max(tritRange, quintRange), plainBitRange);
if (maxRange == tritRange)
{
const ISEParams params(ISEMODE_TRIT, curBitsForTritMode);
if (computeNumRequiredBits(params, numValuesInSequence) <= numAvailableBits)
return ISEParams(ISEMODE_TRIT, curBitsForTritMode);
curBitsForTritMode--;
}
else if (maxRange == quintRange)
{
const ISEParams params(ISEMODE_QUINT, curBitsForQuintMode);
if (computeNumRequiredBits(params, numValuesInSequence) <= numAvailableBits)
return ISEParams(ISEMODE_QUINT, curBitsForQuintMode);
curBitsForQuintMode--;
}
else
{
const ISEParams params(ISEMODE_PLAIN_BIT, curBitsForPlainBitMode);
DE_ASSERT(maxRange == plainBitRange);
if (computeNumRequiredBits(params, numValuesInSequence) <= numAvailableBits)
return ISEParams(ISEMODE_PLAIN_BIT, curBitsForPlainBitMode);
curBitsForPlainBitMode--;
}
}
}
inline int computeNumColorEndpointValues(uint32_t endpointMode)
{
DE_ASSERT(endpointMode < 16);
return (endpointMode / 4 + 1) * 2;
}
// Decompression utilities
enum DecompressResult
{
DECOMPRESS_RESULT_VALID_BLOCK = 0, //!< Decompressed valid block
DECOMPRESS_RESULT_ERROR, //!< Encountered error while decompressing, error color written
DECOMPRESS_RESULT_LAST
};
// A helper for getting bits from a 128-bit block.
class Block128
{
private:
typedef uint64_t Word;
enum
{
WORD_BYTES = sizeof(Word),
WORD_BITS = 8 * WORD_BYTES,
NUM_WORDS = 128 / WORD_BITS
};
DE_STATIC_ASSERT(128 % WORD_BITS == 0);
public:
Block128(const uint8_t *src)
{
for (int wordNdx = 0; wordNdx < NUM_WORDS; wordNdx++)
{
m_words[wordNdx] = 0;
for (int byteNdx = 0; byteNdx < WORD_BYTES; byteNdx++)
m_words[wordNdx] |= (Word)src[wordNdx * WORD_BYTES + byteNdx] << (8 * byteNdx);
}
}
uint32_t getBit(int ndx) const
{
DE_ASSERT(de::inBounds(ndx, 0, 128));
return (m_words[ndx / WORD_BITS] >> (ndx % WORD_BITS)) & 1;
}
uint32_t getBits(int low, int high) const
{
DE_ASSERT(de::inBounds(low, 0, 128));
DE_ASSERT(de::inBounds(high, 0, 128));
DE_ASSERT(de::inRange(high - low + 1, 0, 32));
if (high - low + 1 == 0)
return 0;
const int word0Ndx = low / WORD_BITS;
const int word1Ndx = high / WORD_BITS;
// \note "foo << bar << 1" done instead of "foo << (bar+1)" to avoid overflow, i.e. shift amount being too big.
if (word0Ndx == word1Ndx)
return (uint32_t)((m_words[word0Ndx] & ((((Word)1 << high % WORD_BITS << 1) - 1))) >>
((Word)low % WORD_BITS));
else
{
DE_ASSERT(word1Ndx == word0Ndx + 1);
return (uint32_t)(m_words[word0Ndx] >> (low % WORD_BITS)) |
(uint32_t)((m_words[word1Ndx] & (((Word)1 << high % WORD_BITS << 1) - 1))
<< (high - low - high % WORD_BITS));
}
}
bool isBitSet(int ndx) const
{
DE_ASSERT(de::inBounds(ndx, 0, 128));
return getBit(ndx) != 0;
}
private:
Word m_words[NUM_WORDS];
};
// A helper for sequential access into a Block128.
class BitAccessStream
{
public:
BitAccessStream(const Block128 &src, int startNdxInSrc, int length, bool forward)
: m_src(src)
, m_startNdxInSrc(startNdxInSrc)
, m_length(length)
, m_forward(forward)
, m_ndx(0)
{
}
// Get the next num bits. Bits at positions greater than or equal to m_length are zeros.
uint32_t getNext(int num)
{
if (num == 0 || m_ndx >= m_length)
return 0;
const int end = m_ndx + num;
const int numBitsFromSrc = de::max(0, de::min(m_length, end) - m_ndx);
const int low = m_ndx;
const int high = m_ndx + numBitsFromSrc - 1;
m_ndx += num;
return m_forward ? m_src.getBits(m_startNdxInSrc + low, m_startNdxInSrc + high) :
reverseBits(m_src.getBits(m_startNdxInSrc - high, m_startNdxInSrc - low), numBitsFromSrc);
}
private:
const Block128 &m_src;
const int m_startNdxInSrc;
const int m_length;
const bool m_forward;
int m_ndx;
};
struct ISEDecodedResult
{
uint32_t m;
uint32_t tq; //!< Trit or quint value, depending on ISE mode.
uint32_t v;
};
// Data from an ASTC block's "block mode" part (i.e. bits [0,10]).
struct ASTCBlockMode
{
bool isError;
// \note Following fields only relevant if !isError.
bool isVoidExtent;
// \note Following fields only relevant if !isVoidExtent.
bool isDualPlane;
int weightGridWidth;
int weightGridHeight;
ISEParams weightISEParams;
ASTCBlockMode(void)
: isError(true)
, isVoidExtent(true)
, isDualPlane(true)
, weightGridWidth(-1)
, weightGridHeight(-1)
, weightISEParams(ISEMODE_LAST, -1)
{
}
};
inline int computeNumWeights(const ASTCBlockMode &mode)
{
return mode.weightGridWidth * mode.weightGridHeight * (mode.isDualPlane ? 2 : 1);
}
struct ColorEndpointPair
{
UVec4 e0;
UVec4 e1;
};
struct TexelWeightPair
{
uint32_t w[2];
};
ASTCBlockMode getASTCBlockMode(uint32_t blockModeData)
{
ASTCBlockMode blockMode;
blockMode.isError = true; // \note Set to false later, if not error.
blockMode.isVoidExtent = getBits(blockModeData, 0, 8) == 0x1fc;
if (!blockMode.isVoidExtent)
{
if ((getBits(blockModeData, 0, 1) == 0 && getBits(blockModeData, 6, 8) == 7) ||
getBits(blockModeData, 0, 3) == 0)
return blockMode; // Invalid ("reserved").
uint32_t r = (uint32_t)-1; // \note Set in the following branches.
if (getBits(blockModeData, 0, 1) == 0)
{
const uint32_t r0 = getBit(blockModeData, 4);
const uint32_t r1 = getBit(blockModeData, 2);
const uint32_t r2 = getBit(blockModeData, 3);
const uint32_t i78 = getBits(blockModeData, 7, 8);
r = (r2 << 2) | (r1 << 1) | (r0 << 0);
if (i78 == 3)
{
const bool i5 = isBitSet(blockModeData, 5);
blockMode.weightGridWidth = i5 ? 10 : 6;
blockMode.weightGridHeight = i5 ? 6 : 10;
}
else
{
const uint32_t a = getBits(blockModeData, 5, 6);
switch (i78)
{
case 0:
blockMode.weightGridWidth = 12;
blockMode.weightGridHeight = a + 2;
break;
case 1:
blockMode.weightGridWidth = a + 2;
blockMode.weightGridHeight = 12;
break;
case 2:
blockMode.weightGridWidth = a + 6;
blockMode.weightGridHeight = getBits(blockModeData, 9, 10) + 6;
break;
default:
DE_ASSERT(false);
}
}
}
else
{
const uint32_t r0 = getBit(blockModeData, 4);
const uint32_t r1 = getBit(blockModeData, 0);
const uint32_t r2 = getBit(blockModeData, 1);
const uint32_t i23 = getBits(blockModeData, 2, 3);
const uint32_t a = getBits(blockModeData, 5, 6);
r = (r2 << 2) | (r1 << 1) | (r0 << 0);
if (i23 == 3)
{
const uint32_t b = getBit(blockModeData, 7);
const bool i8 = isBitSet(blockModeData, 8);
blockMode.weightGridWidth = i8 ? b + 2 : a + 2;
blockMode.weightGridHeight = i8 ? a + 2 : b + 6;
}
else
{
const uint32_t b = getBits(blockModeData, 7, 8);
switch (i23)
{
case 0:
blockMode.weightGridWidth = b + 4;
blockMode.weightGridHeight = a + 2;
break;
case 1:
blockMode.weightGridWidth = b + 8;
blockMode.weightGridHeight = a + 2;
break;
case 2:
blockMode.weightGridWidth = a + 2;
blockMode.weightGridHeight = b + 8;
break;
default:
DE_ASSERT(false);
}
}
}
const bool zeroDH = getBits(blockModeData, 0, 1) == 0 && getBits(blockModeData, 7, 8) == 2;
const bool h = zeroDH ? 0 : isBitSet(blockModeData, 9);
blockMode.isDualPlane = zeroDH ? 0 : isBitSet(blockModeData, 10);
{
ISEMode &m = blockMode.weightISEParams.mode;
int &b = blockMode.weightISEParams.numBits;
m = ISEMODE_PLAIN_BIT;
b = 0;
if (h)
{
switch (r)
{
case 2:
m = ISEMODE_QUINT;
b = 1;
break;
case 3:
m = ISEMODE_TRIT;
b = 2;
break;
case 4:
b = 4;
break;
case 5:
m = ISEMODE_QUINT;
b = 2;
break;
case 6:
m = ISEMODE_TRIT;
b = 3;
break;
case 7:
b = 5;
break;
default:
DE_ASSERT(false);
}
}
else
{
switch (r)
{
case 2:
b = 1;
break;
case 3:
m = ISEMODE_TRIT;
break;
case 4:
b = 2;
break;
case 5:
m = ISEMODE_QUINT;
break;
case 6:
m = ISEMODE_TRIT;
b = 1;
break;
case 7:
b = 3;
break;
default:
DE_ASSERT(false);
}
}
}
}
blockMode.isError = false;
return blockMode;
}
inline void setASTCErrorColorBlock(void *dst, int blockWidth, int blockHeight, bool isSRGB)
{
if (isSRGB)
{
uint8_t *const dstU = (uint8_t *)dst;
for (int i = 0; i < blockWidth * blockHeight; i++)
{
dstU[4 * i + 0] = 0xff;
dstU[4 * i + 1] = 0;
dstU[4 * i + 2] = 0xff;
dstU[4 * i + 3] = 0xff;
}
}
else
{
float *const dstF = (float *)dst;
for (int i = 0; i < blockWidth * blockHeight; i++)
{
dstF[4 * i + 0] = 1.0f;
dstF[4 * i + 1] = 0.0f;
dstF[4 * i + 2] = 1.0f;
dstF[4 * i + 3] = 1.0f;
}
}
}
DecompressResult decodeVoidExtentBlock(void *dst, const Block128 &blockData, int blockWidth, int blockHeight,
bool isSRGB, bool isLDRMode)
{
const uint32_t minSExtent = blockData.getBits(12, 24);
const uint32_t maxSExtent = blockData.getBits(25, 37);
const uint32_t minTExtent = blockData.getBits(38, 50);
const uint32_t maxTExtent = blockData.getBits(51, 63);
const bool allExtentsAllOnes =
minSExtent == 0x1fff && maxSExtent == 0x1fff && minTExtent == 0x1fff && maxTExtent == 0x1fff;
const bool isHDRBlock = blockData.isBitSet(9);
if ((isLDRMode && isHDRBlock) || (!allExtentsAllOnes && (minSExtent >= maxSExtent || minTExtent >= maxTExtent)))
{
setASTCErrorColorBlock(dst, blockWidth, blockHeight, isSRGB);
return DECOMPRESS_RESULT_ERROR;
}
const uint32_t rgba[4] = {blockData.getBits(64, 79), blockData.getBits(80, 95), blockData.getBits(96, 111),
blockData.getBits(112, 127)};
if (isSRGB)
{
uint8_t *const dstU = (uint8_t *)dst;
for (int i = 0; i < blockWidth * blockHeight; i++)
for (int c = 0; c < 4; c++)
dstU[i * 4 + c] = (uint8_t)((rgba[c] & 0xff00) >> 8);
}
else
{
float *const dstF = (float *)dst;
if (isHDRBlock)
{
for (int c = 0; c < 4; c++)
{
if (isFloat16InfOrNan((deFloat16)rgba[c]))
throw InternalError("Infinity or NaN color component in HDR void extent block in ASTC texture "
"(behavior undefined by ASTC specification)");
}
for (int i = 0; i < blockWidth * blockHeight; i++)
for (int c = 0; c < 4; c++)
dstF[i * 4 + c] = deFloat16To32((deFloat16)rgba[c]);
}
else
{
for (int i = 0; i < blockWidth * blockHeight; i++)
for (int c = 0; c < 4; c++)
dstF[i * 4 + c] = rgba[c] == 65535 ? 1.0f : (float)rgba[c] / 65536.0f;
}
}
return DECOMPRESS_RESULT_VALID_BLOCK;
}
void decodeColorEndpointModes(uint32_t *endpointModesDst, const Block128 &blockData, int numPartitions,
int extraCemBitsStart)
{
if (numPartitions == 1)
endpointModesDst[0] = blockData.getBits(13, 16);
else
{
const uint32_t highLevelSelector = blockData.getBits(23, 24);
if (highLevelSelector == 0)
{
const uint32_t mode = blockData.getBits(25, 28);
for (int i = 0; i < numPartitions; i++)
endpointModesDst[i] = mode;
}
else
{
for (int partNdx = 0; partNdx < numPartitions; partNdx++)
{
const uint32_t cemClass = highLevelSelector - (blockData.isBitSet(25 + partNdx) ? 0 : 1);
const uint32_t lowBit0Ndx = numPartitions + 2 * partNdx;
const uint32_t lowBit1Ndx = numPartitions + 2 * partNdx + 1;
const uint32_t lowBit0 =
blockData.getBit(lowBit0Ndx < 4 ? 25 + lowBit0Ndx : extraCemBitsStart + lowBit0Ndx - 4);
const uint32_t lowBit1 =
blockData.getBit(lowBit1Ndx < 4 ? 25 + lowBit1Ndx : extraCemBitsStart + lowBit1Ndx - 4);
endpointModesDst[partNdx] = (cemClass << 2) | (lowBit1 << 1) | lowBit0;
}
}
}
}
int computeNumColorEndpointValues(const uint32_t *endpointModes, int numPartitions)
{
int result = 0;
for (int i = 0; i < numPartitions; i++)
result += computeNumColorEndpointValues(endpointModes[i]);
return result;
}
void decodeISETritBlock(ISEDecodedResult *dst, int numValues, BitAccessStream &data, int numBits)
{
DE_ASSERT(de::inRange(numValues, 1, 5));
uint32_t m[5];
m[0] = data.getNext(numBits);
uint32_t T01 = data.getNext(2);
m[1] = data.getNext(numBits);
uint32_t T23 = data.getNext(2);
m[2] = data.getNext(numBits);
uint32_t T4 = data.getNext(1);
m[3] = data.getNext(numBits);
uint32_t T56 = data.getNext(2);
m[4] = data.getNext(numBits);
uint32_t T7 = data.getNext(1);
switch (numValues)
{
case 1:
T23 = 0;
// Fallthrough
case 2:
T4 = 0;
// Fallthrough
case 3:
T56 = 0;
// Fallthrough
case 4:
T7 = 0;
// Fallthrough
case 5:
break;
default:
DE_ASSERT(false);
}
const uint32_t T = (T7 << 7) | (T56 << 5) | (T4 << 4) | (T23 << 2) | (T01 << 0);
static const uint32_t tritsFromT[256][5] = {
{0, 0, 0, 0, 0}, {1, 0, 0, 0, 0}, {2, 0, 0, 0, 0}, {0, 0, 2, 0, 0}, {0, 1, 0, 0, 0}, {1, 1, 0, 0, 0},
{2, 1, 0, 0, 0}, {1, 0, 2, 0, 0}, {0, 2, 0, 0, 0}, {1, 2, 0, 0, 0}, {2, 2, 0, 0, 0}, {2, 0, 2, 0, 0},
{0, 2, 2, 0, 0}, {1, 2, 2, 0, 0}, {2, 2, 2, 0, 0}, {2, 0, 2, 0, 0}, {0, 0, 1, 0, 0}, {1, 0, 1, 0, 0},
{2, 0, 1, 0, 0}, {0, 1, 2, 0, 0}, {0, 1, 1, 0, 0}, {1, 1, 1, 0, 0}, {2, 1, 1, 0, 0}, {1, 1, 2, 0, 0},
{0, 2, 1, 0, 0}, {1, 2, 1, 0, 0}, {2, 2, 1, 0, 0}, {2, 1, 2, 0, 0}, {0, 0, 0, 2, 2}, {1, 0, 0, 2, 2},
{2, 0, 0, 2, 2}, {0, 0, 2, 2, 2}, {0, 0, 0, 1, 0}, {1, 0, 0, 1, 0}, {2, 0, 0, 1, 0}, {0, 0, 2, 1, 0},
{0, 1, 0, 1, 0}, {1, 1, 0, 1, 0}, {2, 1, 0, 1, 0}, {1, 0, 2, 1, 0}, {0, 2, 0, 1, 0}, {1, 2, 0, 1, 0},
{2, 2, 0, 1, 0}, {2, 0, 2, 1, 0}, {0, 2, 2, 1, 0}, {1, 2, 2, 1, 0}, {2, 2, 2, 1, 0}, {2, 0, 2, 1, 0},
{0, 0, 1, 1, 0}, {1, 0, 1, 1, 0}, {2, 0, 1, 1, 0}, {0, 1, 2, 1, 0}, {0, 1, 1, 1, 0}, {1, 1, 1, 1, 0},
{2, 1, 1, 1, 0}, {1, 1, 2, 1, 0}, {0, 2, 1, 1, 0}, {1, 2, 1, 1, 0}, {2, 2, 1, 1, 0}, {2, 1, 2, 1, 0},
{0, 1, 0, 2, 2}, {1, 1, 0, 2, 2}, {2, 1, 0, 2, 2}, {1, 0, 2, 2, 2}, {0, 0, 0, 2, 0}, {1, 0, 0, 2, 0},
{2, 0, 0, 2, 0}, {0, 0, 2, 2, 0}, {0, 1, 0, 2, 0}, {1, 1, 0, 2, 0}, {2, 1, 0, 2, 0}, {1, 0, 2, 2, 0},
{0, 2, 0, 2, 0}, {1, 2, 0, 2, 0}, {2, 2, 0, 2, 0}, {2, 0, 2, 2, 0}, {0, 2, 2, 2, 0}, {1, 2, 2, 2, 0},
{2, 2, 2, 2, 0}, {2, 0, 2, 2, 0}, {0, 0, 1, 2, 0}, {1, 0, 1, 2, 0}, {2, 0, 1, 2, 0}, {0, 1, 2, 2, 0},
{0, 1, 1, 2, 0}, {1, 1, 1, 2, 0}, {2, 1, 1, 2, 0}, {1, 1, 2, 2, 0}, {0, 2, 1, 2, 0}, {1, 2, 1, 2, 0},
{2, 2, 1, 2, 0}, {2, 1, 2, 2, 0}, {0, 2, 0, 2, 2}, {1, 2, 0, 2, 2}, {2, 2, 0, 2, 2}, {2, 0, 2, 2, 2},
{0, 0, 0, 0, 2}, {1, 0, 0, 0, 2}, {2, 0, 0, 0, 2}, {0, 0, 2, 0, 2}, {0, 1, 0, 0, 2}, {1, 1, 0, 0, 2},
{2, 1, 0, 0, 2}, {1, 0, 2, 0, 2}, {0, 2, 0, 0, 2}, {1, 2, 0, 0, 2}, {2, 2, 0, 0, 2}, {2, 0, 2, 0, 2},
{0, 2, 2, 0, 2}, {1, 2, 2, 0, 2}, {2, 2, 2, 0, 2}, {2, 0, 2, 0, 2}, {0, 0, 1, 0, 2}, {1, 0, 1, 0, 2},
{2, 0, 1, 0, 2}, {0, 1, 2, 0, 2}, {0, 1, 1, 0, 2}, {1, 1, 1, 0, 2}, {2, 1, 1, 0, 2}, {1, 1, 2, 0, 2},
{0, 2, 1, 0, 2}, {1, 2, 1, 0, 2}, {2, 2, 1, 0, 2}, {2, 1, 2, 0, 2}, {0, 2, 2, 2, 2}, {1, 2, 2, 2, 2},
{2, 2, 2, 2, 2}, {2, 0, 2, 2, 2}, {0, 0, 0, 0, 1}, {1, 0, 0, 0, 1}, {2, 0, 0, 0, 1}, {0, 0, 2, 0, 1},
{0, 1, 0, 0, 1}, {1, 1, 0, 0, 1}, {2, 1, 0, 0, 1}, {1, 0, 2, 0, 1}, {0, 2, 0, 0, 1}, {1, 2, 0, 0, 1},
{2, 2, 0, 0, 1}, {2, 0, 2, 0, 1}, {0, 2, 2, 0, 1}, {1, 2, 2, 0, 1}, {2, 2, 2, 0, 1}, {2, 0, 2, 0, 1},
{0, 0, 1, 0, 1}, {1, 0, 1, 0, 1}, {2, 0, 1, 0, 1}, {0, 1, 2, 0, 1}, {0, 1, 1, 0, 1}, {1, 1, 1, 0, 1},
{2, 1, 1, 0, 1}, {1, 1, 2, 0, 1}, {0, 2, 1, 0, 1}, {1, 2, 1, 0, 1}, {2, 2, 1, 0, 1}, {2, 1, 2, 0, 1},
{0, 0, 1, 2, 2}, {1, 0, 1, 2, 2}, {2, 0, 1, 2, 2}, {0, 1, 2, 2, 2}, {0, 0, 0, 1, 1}, {1, 0, 0, 1, 1},
{2, 0, 0, 1, 1}, {0, 0, 2, 1, 1}, {0, 1, 0, 1, 1}, {1, 1, 0, 1, 1}, {2, 1, 0, 1, 1}, {1, 0, 2, 1, 1},
{0, 2, 0, 1, 1}, {1, 2, 0, 1, 1}, {2, 2, 0, 1, 1}, {2, 0, 2, 1, 1}, {0, 2, 2, 1, 1}, {1, 2, 2, 1, 1},
{2, 2, 2, 1, 1}, {2, 0, 2, 1, 1}, {0, 0, 1, 1, 1}, {1, 0, 1, 1, 1}, {2, 0, 1, 1, 1}, {0, 1, 2, 1, 1},
{0, 1, 1, 1, 1}, {1, 1, 1, 1, 1}, {2, 1, 1, 1, 1}, {1, 1, 2, 1, 1}, {0, 2, 1, 1, 1}, {1, 2, 1, 1, 1},
{2, 2, 1, 1, 1}, {2, 1, 2, 1, 1}, {0, 1, 1, 2, 2}, {1, 1, 1, 2, 2}, {2, 1, 1, 2, 2}, {1, 1, 2, 2, 2},
{0, 0, 0, 2, 1}, {1, 0, 0, 2, 1}, {2, 0, 0, 2, 1}, {0, 0, 2, 2, 1}, {0, 1, 0, 2, 1}, {1, 1, 0, 2, 1},
{2, 1, 0, 2, 1}, {1, 0, 2, 2, 1}, {0, 2, 0, 2, 1}, {1, 2, 0, 2, 1}, {2, 2, 0, 2, 1}, {2, 0, 2, 2, 1},
{0, 2, 2, 2, 1}, {1, 2, 2, 2, 1}, {2, 2, 2, 2, 1}, {2, 0, 2, 2, 1}, {0, 0, 1, 2, 1}, {1, 0, 1, 2, 1},
{2, 0, 1, 2, 1}, {0, 1, 2, 2, 1}, {0, 1, 1, 2, 1}, {1, 1, 1, 2, 1}, {2, 1, 1, 2, 1}, {1, 1, 2, 2, 1},
{0, 2, 1, 2, 1}, {1, 2, 1, 2, 1}, {2, 2, 1, 2, 1}, {2, 1, 2, 2, 1}, {0, 2, 1, 2, 2}, {1, 2, 1, 2, 2},
{2, 2, 1, 2, 2}, {2, 1, 2, 2, 2}, {0, 0, 0, 1, 2}, {1, 0, 0, 1, 2}, {2, 0, 0, 1, 2}, {0, 0, 2, 1, 2},
{0, 1, 0, 1, 2}, {1, 1, 0, 1, 2}, {2, 1, 0, 1, 2}, {1, 0, 2, 1, 2}, {0, 2, 0, 1, 2}, {1, 2, 0, 1, 2},
{2, 2, 0, 1, 2}, {2, 0, 2, 1, 2}, {0, 2, 2, 1, 2}, {1, 2, 2, 1, 2}, {2, 2, 2, 1, 2}, {2, 0, 2, 1, 2},
{0, 0, 1, 1, 2}, {1, 0, 1, 1, 2}, {2, 0, 1, 1, 2}, {0, 1, 2, 1, 2}, {0, 1, 1, 1, 2}, {1, 1, 1, 1, 2},
{2, 1, 1, 1, 2}, {1, 1, 2, 1, 2}, {0, 2, 1, 1, 2}, {1, 2, 1, 1, 2}, {2, 2, 1, 1, 2}, {2, 1, 2, 1, 2},
{0, 2, 2, 2, 2}, {1, 2, 2, 2, 2}, {2, 2, 2, 2, 2}, {2, 1, 2, 2, 2}};
const uint32_t(&trits)[5] = tritsFromT[T];
for (int i = 0; i < numValues; i++)
{
dst[i].m = m[i];
dst[i].tq = trits[i];
dst[i].v = (trits[i] << numBits) + m[i];
}
}
void decodeISEQuintBlock(ISEDecodedResult *dst, int numValues, BitAccessStream &data, int numBits)
{
DE_ASSERT(de::inRange(numValues, 1, 3));
uint32_t m[3];
m[0] = data.getNext(numBits);
uint32_t Q012 = data.getNext(3);
m[1] = data.getNext(numBits);
uint32_t Q34 = data.getNext(2);
m[2] = data.getNext(numBits);
uint32_t Q56 = data.getNext(2);
switch (numValues)
{
case 1:
Q34 = 0;
// Fallthrough
case 2:
Q56 = 0;
// Fallthrough
case 3:
break;
default:
DE_ASSERT(false);
}
const uint32_t Q = (Q56 << 5) | (Q34 << 3) | (Q012 << 0);
static const uint32_t quintsFromQ[256][3] = {
{0, 0, 0}, {1, 0, 0}, {2, 0, 0}, {3, 0, 0}, {4, 0, 0}, {0, 4, 0}, {4, 4, 0}, {4, 4, 4}, {0, 1, 0}, {1, 1, 0},
{2, 1, 0}, {3, 1, 0}, {4, 1, 0}, {1, 4, 0}, {4, 4, 1}, {4, 4, 4}, {0, 2, 0}, {1, 2, 0}, {2, 2, 0}, {3, 2, 0},
{4, 2, 0}, {2, 4, 0}, {4, 4, 2}, {4, 4, 4}, {0, 3, 0}, {1, 3, 0}, {2, 3, 0}, {3, 3, 0}, {4, 3, 0}, {3, 4, 0},
{4, 4, 3}, {4, 4, 4}, {0, 0, 1}, {1, 0, 1}, {2, 0, 1}, {3, 0, 1}, {4, 0, 1}, {0, 4, 1}, {4, 0, 4}, {0, 4, 4},
{0, 1, 1}, {1, 1, 1}, {2, 1, 1}, {3, 1, 1}, {4, 1, 1}, {1, 4, 1}, {4, 1, 4}, {1, 4, 4}, {0, 2, 1}, {1, 2, 1},
{2, 2, 1}, {3, 2, 1}, {4, 2, 1}, {2, 4, 1}, {4, 2, 4}, {2, 4, 4}, {0, 3, 1}, {1, 3, 1}, {2, 3, 1}, {3, 3, 1},
{4, 3, 1}, {3, 4, 1}, {4, 3, 4}, {3, 4, 4}, {0, 0, 2}, {1, 0, 2}, {2, 0, 2}, {3, 0, 2}, {4, 0, 2}, {0, 4, 2},
{2, 0, 4}, {3, 0, 4}, {0, 1, 2}, {1, 1, 2}, {2, 1, 2}, {3, 1, 2}, {4, 1, 2}, {1, 4, 2}, {2, 1, 4}, {3, 1, 4},
{0, 2, 2}, {1, 2, 2}, {2, 2, 2}, {3, 2, 2}, {4, 2, 2}, {2, 4, 2}, {2, 2, 4}, {3, 2, 4}, {0, 3, 2}, {1, 3, 2},
{2, 3, 2}, {3, 3, 2}, {4, 3, 2}, {3, 4, 2}, {2, 3, 4}, {3, 3, 4}, {0, 0, 3}, {1, 0, 3}, {2, 0, 3}, {3, 0, 3},
{4, 0, 3}, {0, 4, 3}, {0, 0, 4}, {1, 0, 4}, {0, 1, 3}, {1, 1, 3}, {2, 1, 3}, {3, 1, 3}, {4, 1, 3}, {1, 4, 3},
{0, 1, 4}, {1, 1, 4}, {0, 2, 3}, {1, 2, 3}, {2, 2, 3}, {3, 2, 3}, {4, 2, 3}, {2, 4, 3}, {0, 2, 4}, {1, 2, 4},
{0, 3, 3}, {1, 3, 3}, {2, 3, 3}, {3, 3, 3}, {4, 3, 3}, {3, 4, 3}, {0, 3, 4}, {1, 3, 4}};
const uint32_t(&quints)[3] = quintsFromQ[Q];
for (int i = 0; i < numValues; i++)
{
dst[i].m = m[i];
dst[i].tq = quints[i];
dst[i].v = (quints[i] << numBits) + m[i];
}
}
inline void decodeISEBitBlock(ISEDecodedResult *dst, BitAccessStream &data, int numBits)
{
dst[0].m = data.getNext(numBits);
dst[0].v = dst[0].m;
}
void decodeISE(ISEDecodedResult *dst, int numValues, BitAccessStream &data, const ISEParams &params)
{
if (params.mode == ISEMODE_TRIT)
{
const int numBlocks = deDivRoundUp32(numValues, 5);
for (int blockNdx = 0; blockNdx < numBlocks; blockNdx++)
{
const int numValuesInBlock = blockNdx == numBlocks - 1 ? numValues - 5 * (numBlocks - 1) : 5;
decodeISETritBlock(&dst[5 * blockNdx], numValuesInBlock, data, params.numBits);
}
}
else if (params.mode == ISEMODE_QUINT)
{
const int numBlocks = deDivRoundUp32(numValues, 3);
for (int blockNdx = 0; blockNdx < numBlocks; blockNdx++)
{
const int numValuesInBlock = blockNdx == numBlocks - 1 ? numValues - 3 * (numBlocks - 1) : 3;
decodeISEQuintBlock(&dst[3 * blockNdx], numValuesInBlock, data, params.numBits);
}
}
else
{
DE_ASSERT(params.mode == ISEMODE_PLAIN_BIT);
for (int i = 0; i < numValues; i++)
decodeISEBitBlock(&dst[i], data, params.numBits);
}
}
void unquantizeColorEndpoints(uint32_t *dst, const ISEDecodedResult *iseResults, int numEndpoints,
const ISEParams &iseParams)
{
if (iseParams.mode == ISEMODE_TRIT || iseParams.mode == ISEMODE_QUINT)
{
const int rangeCase = iseParams.numBits * 2 - (iseParams.mode == ISEMODE_TRIT ? 2 : 1);
DE_ASSERT(de::inRange(rangeCase, 0, 10));
static const uint32_t Ca[11] = {204, 113, 93, 54, 44, 26, 22, 13, 11, 6, 5};
const uint32_t C = Ca[rangeCase];
for (int endpointNdx = 0; endpointNdx < numEndpoints; endpointNdx++)
{
const uint32_t a = getBit(iseResults[endpointNdx].m, 0);
const uint32_t b = getBit(iseResults[endpointNdx].m, 1);
const uint32_t c = getBit(iseResults[endpointNdx].m, 2);
const uint32_t d = getBit(iseResults[endpointNdx].m, 3);
const uint32_t e = getBit(iseResults[endpointNdx].m, 4);
const uint32_t f = getBit(iseResults[endpointNdx].m, 5);
const uint32_t A = a == 0 ? 0 : (1 << 9) - 1;
const uint32_t B = rangeCase == 0 ? 0 :
rangeCase == 1 ? 0 :
rangeCase == 2 ? (b << 8) | (b << 4) | (b << 2) | (b << 1) :
rangeCase == 3 ? (b << 8) | (b << 3) | (b << 2) :
rangeCase == 4 ? (c << 8) | (b << 7) | (c << 3) | (b << 2) | (c << 1) | (b << 0) :
rangeCase == 5 ? (c << 8) | (b << 7) | (c << 2) | (b << 1) | (c << 0) :
rangeCase == 6 ? (d << 8) | (c << 7) | (b << 6) | (d << 2) | (c << 1) | (b << 0) :
rangeCase == 7 ? (d << 8) | (c << 7) | (b << 6) | (d << 1) | (c << 0) :
rangeCase == 8 ? (e << 8) | (d << 7) | (c << 6) | (b << 5) | (e << 1) | (d << 0) :
rangeCase == 9 ? (e << 8) | (d << 7) | (c << 6) | (b << 5) | (e << 0) :
rangeCase == 10 ? (f << 8) | (e << 7) | (d << 6) | (c << 5) | (b << 4) | (f << 0) :
(uint32_t)-1;
DE_ASSERT(B != (uint32_t)-1);
dst[endpointNdx] = (((iseResults[endpointNdx].tq * C + B) ^ A) >> 2) | (A & 0x80);
}
}
else
{
DE_ASSERT(iseParams.mode == ISEMODE_PLAIN_BIT);
for (int endpointNdx = 0; endpointNdx < numEndpoints; endpointNdx++)
dst[endpointNdx] = bitReplicationScale(iseResults[endpointNdx].v, iseParams.numBits, 8);
}
}
inline void bitTransferSigned(int32_t &a, int32_t &b)
{
b >>= 1;
b |= a & 0x80;
a >>= 1;
a &= 0x3f;
if (isBitSet(a, 5))
a -= 0x40;
}
inline UVec4 clampedRGBA(const IVec4 &rgba)
{
return UVec4(de::clamp(rgba.x(), 0, 0xff), de::clamp(rgba.y(), 0, 0xff), de::clamp(rgba.z(), 0, 0xff),
de::clamp(rgba.w(), 0, 0xff));
}
inline IVec4 blueContract(int r, int g, int b, int a)
{
return IVec4((r + b) >> 1, (g + b) >> 1, b, a);
}
inline bool isColorEndpointModeHDR(uint32_t mode)
{
return mode == 2 || mode == 3 || mode == 7 || mode == 11 || mode == 14 || mode == 15;
}
void decodeHDREndpointMode7(UVec4 &e0, UVec4 &e1, uint32_t v0, uint32_t v1, uint32_t v2, uint32_t v3)
{
const uint32_t m10 = getBit(v1, 7) | (getBit(v2, 7) << 1);
const uint32_t m23 = getBits(v0, 6, 7);
const uint32_t majComp = m10 != 3 ? m10 : m23 != 3 ? m23 : 0;
const uint32_t mode = m10 != 3 ? m23 : m23 != 3 ? 4 : 5;
int32_t red = (int32_t)getBits(v0, 0, 5);
int32_t green = (int32_t)getBits(v1, 0, 4);
int32_t blue = (int32_t)getBits(v2, 0, 4);
int32_t scale = (int32_t)getBits(v3, 0, 4);
{
#define SHOR(DST_VAR, SHIFT, BIT_VAR) (DST_VAR) |= (BIT_VAR) << (SHIFT)
#define ASSIGN_X_BITS(V0, S0, V1, S1, V2, S2, V3, S3, V4, S4, V5, S5, V6, S6) \
do \
{ \
SHOR(V0, S0, x0); \
SHOR(V1, S1, x1); \
SHOR(V2, S2, x2); \
SHOR(V3, S3, x3); \
SHOR(V4, S4, x4); \
SHOR(V5, S5, x5); \
SHOR(V6, S6, x6); \
} while (false)
const uint32_t x0 = getBit(v1, 6);
const uint32_t x1 = getBit(v1, 5);
const uint32_t x2 = getBit(v2, 6);
const uint32_t x3 = getBit(v2, 5);
const uint32_t x4 = getBit(v3, 7);
const uint32_t x5 = getBit(v3, 6);
const uint32_t x6 = getBit(v3, 5);
int32_t &R = red;
int32_t &G = green;
int32_t &B = blue;
int32_t &S = scale;
switch (mode)
{
case 0:
ASSIGN_X_BITS(R, 9, R, 8, R, 7, R, 10, R, 6, S, 6, S, 5);
break;
case 1:
ASSIGN_X_BITS(R, 8, G, 5, R, 7, B, 5, R, 6, R, 10, R, 9);
break;
case 2:
ASSIGN_X_BITS(R, 9, R, 8, R, 7, R, 6, S, 7, S, 6, S, 5);
break;
case 3:
ASSIGN_X_BITS(R, 8, G, 5, R, 7, B, 5, R, 6, S, 6, S, 5);
break;
case 4:
ASSIGN_X_BITS(G, 6, G, 5, B, 6, B, 5, R, 6, R, 7, S, 5);
break;
case 5:
ASSIGN_X_BITS(G, 6, G, 5, B, 6, B, 5, R, 6, S, 6, S, 5);
break;
default:
DE_ASSERT(false);
}
#undef ASSIGN_X_BITS
#undef SHOR
}
static const int shiftAmounts[] = {1, 1, 2, 3, 4, 5};
DE_ASSERT(mode < DE_LENGTH_OF_ARRAY(shiftAmounts));
red <<= shiftAmounts[mode];
green <<= shiftAmounts[mode];
blue <<= shiftAmounts[mode];
scale <<= shiftAmounts[mode];
if (mode != 5)
{
green = red - green;
blue = red - blue;
}
if (majComp == 1)
std::swap(red, green);
else if (majComp == 2)
std::swap(red, blue);
e0 = UVec4(de::clamp(red - scale, 0, 0xfff), de::clamp(green - scale, 0, 0xfff), de::clamp(blue - scale, 0, 0xfff),
0x780);
e1 = UVec4(de::clamp(red, 0, 0xfff), de::clamp(green, 0, 0xfff), de::clamp(blue, 0, 0xfff), 0x780);
}
void decodeHDREndpointMode11(UVec4 &e0, UVec4 &e1, uint32_t v0, uint32_t v1, uint32_t v2, uint32_t v3, uint32_t v4,
uint32_t v5)
{
const uint32_t major = (getBit(v5, 7) << 1) | getBit(v4, 7);
if (major == 3)
{
e0 = UVec4(v0 << 4, v2 << 4, getBits(v4, 0, 6) << 5, 0x780);
e1 = UVec4(v1 << 4, v3 << 4, getBits(v5, 0, 6) << 5, 0x780);
}
else
{
const uint32_t mode = (getBit(v3, 7) << 2) | (getBit(v2, 7) << 1) | getBit(v1, 7);
int32_t a = (int32_t)((getBit(v1, 6) << 8) | v0);
int32_t c = (int32_t)(getBits(v1, 0, 5));
int32_t b0 = (int32_t)(getBits(v2, 0, 5));
int32_t b1 = (int32_t)(getBits(v3, 0, 5));
int32_t d0 = (int32_t)(getBits(v4, 0, 4));
int32_t d1 = (int32_t)(getBits(v5, 0, 4));
{
#define SHOR(DST_VAR, SHIFT, BIT_VAR) (DST_VAR) |= (BIT_VAR) << (SHIFT)
#define ASSIGN_X_BITS(V0, S0, V1, S1, V2, S2, V3, S3, V4, S4, V5, S5) \
do \
{ \
SHOR(V0, S0, x0); \
SHOR(V1, S1, x1); \
SHOR(V2, S2, x2); \
SHOR(V3, S3, x3); \
SHOR(V4, S4, x4); \
SHOR(V5, S5, x5); \
} while (false)
const uint32_t x0 = getBit(v2, 6);
const uint32_t x1 = getBit(v3, 6);
const uint32_t x2 = getBit(v4, 6);
const uint32_t x3 = getBit(v5, 6);
const uint32_t x4 = getBit(v4, 5);
const uint32_t x5 = getBit(v5, 5);
switch (mode)
{
case 0:
ASSIGN_X_BITS(b0, 6, b1, 6, d0, 6, d1, 6, d0, 5, d1, 5);
break;
case 1:
ASSIGN_X_BITS(b0, 6, b1, 6, b0, 7, b1, 7, d0, 5, d1, 5);
break;
case 2:
ASSIGN_X_BITS(a, 9, c, 6, d0, 6, d1, 6, d0, 5, d1, 5);
break;
case 3:
ASSIGN_X_BITS(b0, 6, b1, 6, a, 9, c, 6, d0, 5, d1, 5);
break;
case 4:
ASSIGN_X_BITS(b0, 6, b1, 6, b0, 7, b1, 7, a, 9, a, 10);
break;
case 5:
ASSIGN_X_BITS(a, 9, a, 10, c, 7, c, 6, d0, 5, d1, 5);
break;
case 6:
ASSIGN_X_BITS(b0, 6, b1, 6, a, 11, c, 6, a, 9, a, 10);
break;
case 7:
ASSIGN_X_BITS(a, 9, a, 10, a, 11, c, 6, d0, 5, d1, 5);
break;
default:
DE_ASSERT(false);
}
#undef ASSIGN_X_BITS
#undef SHOR
}
static const int numDBits[] = {7, 6, 7, 6, 5, 6, 5, 6};
DE_ASSERT(mode < DE_LENGTH_OF_ARRAY(numDBits));
d0 = signExtend(d0, numDBits[mode]);
d1 = signExtend(d1, numDBits[mode]);
const int shiftAmount = (mode >> 1) ^ 3;
a <<= shiftAmount;
c <<= shiftAmount;
b0 <<= shiftAmount;
b1 <<= shiftAmount;
d0 <<= shiftAmount;
d1 <<= shiftAmount;
e0 = UVec4(de::clamp(a - c, 0, 0xfff), de::clamp(a - b0 - c - d0, 0, 0xfff),
de::clamp(a - b1 - c - d1, 0, 0xfff), 0x780);
e1 = UVec4(de::clamp(a, 0, 0xfff), de::clamp(a - b0, 0, 0xfff), de::clamp(a - b1, 0, 0xfff), 0x780);
if (major == 1)
{
std::swap(e0.x(), e0.y());
std::swap(e1.x(), e1.y());
}
else if (major == 2)
{
std::swap(e0.x(), e0.z());
std::swap(e1.x(), e1.z());
}
}
}
void decodeHDREndpointMode15(UVec4 &e0, UVec4 &e1, uint32_t v0, uint32_t v1, uint32_t v2, uint32_t v3, uint32_t v4,
uint32_t v5, uint32_t v6In, uint32_t v7In)
{
decodeHDREndpointMode11(e0, e1, v0, v1, v2, v3, v4, v5);
const uint32_t mode = (getBit(v7In, 7) << 1) | getBit(v6In, 7);
int32_t v6 = (int32_t)getBits(v6In, 0, 6);
int32_t v7 = (int32_t)getBits(v7In, 0, 6);
if (mode == 3)
{
e0.w() = v6 << 5;
e1.w() = v7 << 5;
}
else
{
v6 |= (v7 << (mode + 1)) & 0x780;
v7 &= (0x3f >> mode);
v7 ^= 0x20 >> mode;
v7 -= 0x20 >> mode;
v6 <<= 4 - mode;
v7 <<= 4 - mode;
v7 += v6;
v7 = de::clamp(v7, 0, 0xfff);
e0.w() = v6;
e1.w() = v7;
}
}
void decodeColorEndpoints(ColorEndpointPair *dst, const uint32_t *unquantizedEndpoints, const uint32_t *endpointModes,
int numPartitions)
{
int unquantizedNdx = 0;
for (int partitionNdx = 0; partitionNdx < numPartitions; partitionNdx++)
{
const uint32_t endpointMode = endpointModes[partitionNdx];
const uint32_t *v = &unquantizedEndpoints[unquantizedNdx];
UVec4 &e0 = dst[partitionNdx].e0;
UVec4 &e1 = dst[partitionNdx].e1;
unquantizedNdx += computeNumColorEndpointValues(endpointMode);
switch (endpointMode)
{
case 0:
e0 = UVec4(v[0], v[0], v[0], 0xff);
e1 = UVec4(v[1], v[1], v[1], 0xff);
break;
case 1:
{
const uint32_t L0 = (v[0] >> 2) | (getBits(v[1], 6, 7) << 6);
const uint32_t L1 = de::min(0xffu, L0 + getBits(v[1], 0, 5));
e0 = UVec4(L0, L0, L0, 0xff);
e1 = UVec4(L1, L1, L1, 0xff);
break;
}
case 2:
{
const uint32_t v1Gr = v[1] >= v[0];
const uint32_t y0 = v1Gr ? v[0] << 4 : (v[1] << 4) + 8;
const uint32_t y1 = v1Gr ? v[1] << 4 : (v[0] << 4) - 8;
e0 = UVec4(y0, y0, y0, 0x780);
e1 = UVec4(y1, y1, y1, 0x780);
break;
}
case 3:
{
const bool m = isBitSet(v[0], 7);
const uint32_t y0 = m ? (getBits(v[1], 5, 7) << 9) | (getBits(v[0], 0, 6) << 2) :
(getBits(v[1], 4, 7) << 8) | (getBits(v[0], 0, 6) << 1);
const uint32_t d = m ? getBits(v[1], 0, 4) << 2 : getBits(v[1], 0, 3) << 1;
const uint32_t y1 = de::min(0xfffu, y0 + d);
e0 = UVec4(y0, y0, y0, 0x780);
e1 = UVec4(y1, y1, y1, 0x780);
break;
}
case 4:
e0 = UVec4(v[0], v[0], v[0], v[2]);
e1 = UVec4(v[1], v[1], v[1], v[3]);
break;
case 5:
{
int32_t v0 = (int32_t)v[0];
int32_t v1 = (int32_t)v[1];
int32_t v2 = (int32_t)v[2];
int32_t v3 = (int32_t)v[3];
bitTransferSigned(v1, v0);
bitTransferSigned(v3, v2);
e0 = clampedRGBA(IVec4(v0, v0, v0, v2));
e1 = clampedRGBA(IVec4(v0 + v1, v0 + v1, v0 + v1, v2 + v3));
break;
}
case 6:
e0 = UVec4((v[0] * v[3]) >> 8, (v[1] * v[3]) >> 8, (v[2] * v[3]) >> 8, 0xff);
e1 = UVec4(v[0], v[1], v[2], 0xff);
break;
case 7:
decodeHDREndpointMode7(e0, e1, v[0], v[1], v[2], v[3]);
break;
case 8:
if (v[1] + v[3] + v[5] >= v[0] + v[2] + v[4])
{
e0 = UVec4(v[0], v[2], v[4], 0xff);
e1 = UVec4(v[1], v[3], v[5], 0xff);
}
else
{
e0 = blueContract(v[1], v[3], v[5], 0xff).asUint();
e1 = blueContract(v[0], v[2], v[4], 0xff).asUint();
}
break;
case 9:
{
int32_t v0 = (int32_t)v[0];
int32_t v1 = (int32_t)v[1];
int32_t v2 = (int32_t)v[2];
int32_t v3 = (int32_t)v[3];
int32_t v4 = (int32_t)v[4];
int32_t v5 = (int32_t)v[5];
bitTransferSigned(v1, v0);
bitTransferSigned(v3, v2);
bitTransferSigned(v5, v4);
if (v1 + v3 + v5 >= 0)
{
e0 = clampedRGBA(IVec4(v0, v2, v4, 0xff));
e1 = clampedRGBA(IVec4(v0 + v1, v2 + v3, v4 + v5, 0xff));
}
else
{
e0 = clampedRGBA(blueContract(v0 + v1, v2 + v3, v4 + v5, 0xff));
e1 = clampedRGBA(blueContract(v0, v2, v4, 0xff));
}
break;
}
case 10:
e0 = UVec4((v[0] * v[3]) >> 8, (v[1] * v[3]) >> 8, (v[2] * v[3]) >> 8, v[4]);
e1 = UVec4(v[0], v[1], v[2], v[5]);
break;
case 11:
decodeHDREndpointMode11(e0, e1, v[0], v[1], v[2], v[3], v[4], v[5]);
break;
case 12:
if (v[1] + v[3] + v[5] >= v[0] + v[2] + v[4])
{
e0 = UVec4(v[0], v[2], v[4], v[6]);
e1 = UVec4(v[1], v[3], v[5], v[7]);
}
else
{
e0 = clampedRGBA(blueContract(v[1], v[3], v[5], v[7]));
e1 = clampedRGBA(blueContract(v[0], v[2], v[4], v[6]));
}
break;
case 13:
{
int32_t v0 = (int32_t)v[0];
int32_t v1 = (int32_t)v[1];
int32_t v2 = (int32_t)v[2];
int32_t v3 = (int32_t)v[3];
int32_t v4 = (int32_t)v[4];
int32_t v5 = (int32_t)v[5];
int32_t v6 = (int32_t)v[6];
int32_t v7 = (int32_t)v[7];
bitTransferSigned(v1, v0);
bitTransferSigned(v3, v2);
bitTransferSigned(v5, v4);
bitTransferSigned(v7, v6);
if (v1 + v3 + v5 >= 0)
{
e0 = clampedRGBA(IVec4(v0, v2, v4, v6));
e1 = clampedRGBA(IVec4(v0 + v1, v2 + v3, v4 + v5, v6 + v7));
}
else
{
e0 = clampedRGBA(blueContract(v0 + v1, v2 + v3, v4 + v5, v6 + v7));
e1 = clampedRGBA(blueContract(v0, v2, v4, v6));
}
break;
}
case 14:
decodeHDREndpointMode11(e0, e1, v[0], v[1], v[2], v[3], v[4], v[5]);
e0.w() = v[6];
e1.w() = v[7];
break;
case 15:
decodeHDREndpointMode15(e0, e1, v[0], v[1], v[2], v[3], v[4], v[5], v[6], v[7]);
break;
default:
DE_ASSERT(false);
}
}
}
void computeColorEndpoints(ColorEndpointPair *dst, const Block128 &blockData, const uint32_t *endpointModes,
int numPartitions, int numColorEndpointValues, const ISEParams &iseParams,
int numBitsAvailable)
{
const int colorEndpointDataStart = numPartitions == 1 ? 17 : 29;
ISEDecodedResult colorEndpointData[18];
{
BitAccessStream dataStream(blockData, colorEndpointDataStart, numBitsAvailable, true);
decodeISE(&colorEndpointData[0], numColorEndpointValues, dataStream, iseParams);
}
{
uint32_t unquantizedEndpoints[18];
unquantizeColorEndpoints(&unquantizedEndpoints[0], &colorEndpointData[0], numColorEndpointValues, iseParams);
decodeColorEndpoints(dst, &unquantizedEndpoints[0], &endpointModes[0], numPartitions);
}
}
void unquantizeWeights(uint32_t dst[64], const ISEDecodedResult *weightGrid, const ASTCBlockMode &blockMode)
{
const int numWeights = computeNumWeights(blockMode);
const ISEParams &iseParams = blockMode.weightISEParams;
if (iseParams.mode == ISEMODE_TRIT || iseParams.mode == ISEMODE_QUINT)
{
const int rangeCase = iseParams.numBits * 2 + (iseParams.mode == ISEMODE_QUINT ? 1 : 0);
if (rangeCase == 0 || rangeCase == 1)
{
static const uint32_t map0[3] = {0, 32, 63};
static const uint32_t map1[5] = {0, 16, 32, 47, 63};
const uint32_t *const map = rangeCase == 0 ? &map0[0] : &map1[0];
for (int i = 0; i < numWeights; i++)
{
DE_ASSERT(weightGrid[i].v < (rangeCase == 0 ? 3u : 5u));
dst[i] = map[weightGrid[i].v];
}
}
else
{
DE_ASSERT(rangeCase <= 6);
static const uint32_t Ca[5] = {50, 28, 23, 13, 11};
const uint32_t C = Ca[rangeCase - 2];
for (int weightNdx = 0; weightNdx < numWeights; weightNdx++)
{
const uint32_t a = getBit(weightGrid[weightNdx].m, 0);
const uint32_t b = getBit(weightGrid[weightNdx].m, 1);
const uint32_t c = getBit(weightGrid[weightNdx].m, 2);
const uint32_t A = a == 0 ? 0 : (1 << 7) - 1;
const uint32_t B = rangeCase == 2 ? 0 :
rangeCase == 3 ? 0 :
rangeCase == 4 ? (b << 6) | (b << 2) | (b << 0) :
rangeCase == 5 ? (b << 6) | (b << 1) :
rangeCase == 6 ? (c << 6) | (b << 5) | (c << 1) | (b << 0) :
(uint32_t)-1;
dst[weightNdx] = (((weightGrid[weightNdx].tq * C + B) ^ A) >> 2) | (A & 0x20);
}
}
}
else
{
DE_ASSERT(iseParams.mode == ISEMODE_PLAIN_BIT);
for (int weightNdx = 0; weightNdx < numWeights; weightNdx++)
dst[weightNdx] = bitReplicationScale(weightGrid[weightNdx].v, iseParams.numBits, 6);
}
for (int weightNdx = 0; weightNdx < numWeights; weightNdx++)
dst[weightNdx] += dst[weightNdx] > 32 ? 1 : 0;
// Initialize nonexistent weights to poison values
for (int weightNdx = numWeights; weightNdx < 64; weightNdx++)
dst[weightNdx] = ~0u;
}
void interpolateWeights(TexelWeightPair *dst, const uint32_t (&unquantizedWeights)[64], int blockWidth, int blockHeight,
const ASTCBlockMode &blockMode)
{
const int numWeightsPerTexel = blockMode.isDualPlane ? 2 : 1;
const uint32_t scaleX = (1024 + blockWidth / 2) / (blockWidth - 1);
const uint32_t scaleY = (1024 + blockHeight / 2) / (blockHeight - 1);
DE_ASSERT(blockMode.weightGridWidth * blockMode.weightGridHeight * numWeightsPerTexel <=
DE_LENGTH_OF_ARRAY(unquantizedWeights));
for (int texelY = 0; texelY < blockHeight; texelY++)
{
for (int texelX = 0; texelX < blockWidth; texelX++)
{
const uint32_t gX = (scaleX * texelX * (blockMode.weightGridWidth - 1) + 32) >> 6;
const uint32_t gY = (scaleY * texelY * (blockMode.weightGridHeight - 1) + 32) >> 6;
const uint32_t jX = gX >> 4;
const uint32_t jY = gY >> 4;
const uint32_t fX = gX & 0xf;
const uint32_t fY = gY & 0xf;
const uint32_t w11 = (fX * fY + 8) >> 4;
const uint32_t w10 = fY - w11;
const uint32_t w01 = fX - w11;
const uint32_t w00 = 16 - fX - fY + w11;
const uint32_t i00 = jY * blockMode.weightGridWidth + jX;
const uint32_t i01 = i00 + 1;
const uint32_t i10 = i00 + blockMode.weightGridWidth;
const uint32_t i11 = i00 + blockMode.weightGridWidth + 1;
// These addresses can be out of bounds, but respective weights will be 0 then.
DE_ASSERT(deInBounds32(i00, 0, blockMode.weightGridWidth * blockMode.weightGridHeight) || w00 == 0);
DE_ASSERT(deInBounds32(i01, 0, blockMode.weightGridWidth * blockMode.weightGridHeight) || w01 == 0);
DE_ASSERT(deInBounds32(i10, 0, blockMode.weightGridWidth * blockMode.weightGridHeight) || w10 == 0);
DE_ASSERT(deInBounds32(i11, 0, blockMode.weightGridWidth * blockMode.weightGridHeight) || w11 == 0);
for (int texelWeightNdx = 0; texelWeightNdx < numWeightsPerTexel; texelWeightNdx++)
{
// & 0x3f clamps address to bounds of unquantizedWeights
const uint32_t p00 = unquantizedWeights[(i00 * numWeightsPerTexel + texelWeightNdx) & 0x3f];
const uint32_t p01 = unquantizedWeights[(i01 * numWeightsPerTexel + texelWeightNdx) & 0x3f];
const uint32_t p10 = unquantizedWeights[(i10 * numWeightsPerTexel + texelWeightNdx) & 0x3f];
const uint32_t p11 = unquantizedWeights[(i11 * numWeightsPerTexel + texelWeightNdx) & 0x3f];
dst[texelY * blockWidth + texelX].w[texelWeightNdx] =
(p00 * w00 + p01 * w01 + p10 * w10 + p11 * w11 + 8) >> 4;
}
}
}
}
void computeTexelWeights(TexelWeightPair *dst, const Block128 &blockData, int blockWidth, int blockHeight,
const ASTCBlockMode &blockMode)
{
ISEDecodedResult weightGrid[64];
{
BitAccessStream dataStream(
blockData, 127, computeNumRequiredBits(blockMode.weightISEParams, computeNumWeights(blockMode)), false);
decodeISE(&weightGrid[0], computeNumWeights(blockMode), dataStream, blockMode.weightISEParams);
}
{
uint32_t unquantizedWeights[64];
unquantizeWeights(&unquantizedWeights[0], &weightGrid[0], blockMode);
interpolateWeights(dst, unquantizedWeights, blockWidth, blockHeight, blockMode);
}
}
inline uint32_t hash52(uint32_t v)
{
uint32_t p = v;
p ^= p >> 15;
p -= p << 17;
p += p << 7;
p += p << 4;
p ^= p >> 5;
p += p << 16;
p ^= p >> 7;
p ^= p >> 3;
p ^= p << 6;
p ^= p >> 17;
return p;
}
int computeTexelPartition(uint32_t seedIn, uint32_t xIn, uint32_t yIn, uint32_t zIn, int numPartitions, bool smallBlock)
{
DE_ASSERT(zIn == 0);
const uint32_t x = smallBlock ? xIn << 1 : xIn;
const uint32_t y = smallBlock ? yIn << 1 : yIn;
const uint32_t z = smallBlock ? zIn << 1 : zIn;
const uint32_t seed = seedIn + 1024 * (numPartitions - 1);
const uint32_t rnum = hash52(seed);
uint8_t seed1 = (uint8_t)(rnum & 0xf);
uint8_t seed2 = (uint8_t)((rnum >> 4) & 0xf);
uint8_t seed3 = (uint8_t)((rnum >> 8) & 0xf);
uint8_t seed4 = (uint8_t)((rnum >> 12) & 0xf);
uint8_t seed5 = (uint8_t)((rnum >> 16) & 0xf);
uint8_t seed6 = (uint8_t)((rnum >> 20) & 0xf);
uint8_t seed7 = (uint8_t)((rnum >> 24) & 0xf);
uint8_t seed8 = (uint8_t)((rnum >> 28) & 0xf);
uint8_t seed9 = (uint8_t)((rnum >> 18) & 0xf);
uint8_t seed10 = (uint8_t)((rnum >> 22) & 0xf);
uint8_t seed11 = (uint8_t)((rnum >> 26) & 0xf);
uint8_t seed12 = (uint8_t)(((rnum >> 30) | (rnum << 2)) & 0xf);
seed1 = (uint8_t)(seed1 * seed1);
seed2 = (uint8_t)(seed2 * seed2);
seed3 = (uint8_t)(seed3 * seed3);
seed4 = (uint8_t)(seed4 * seed4);
seed5 = (uint8_t)(seed5 * seed5);
seed6 = (uint8_t)(seed6 * seed6);
seed7 = (uint8_t)(seed7 * seed7);
seed8 = (uint8_t)(seed8 * seed8);
seed9 = (uint8_t)(seed9 * seed9);
seed10 = (uint8_t)(seed10 * seed10);
seed11 = (uint8_t)(seed11 * seed11);
seed12 = (uint8_t)(seed12 * seed12);
const int shA = (seed & 2) != 0 ? 4 : 5;
const int shB = numPartitions == 3 ? 6 : 5;
const int sh1 = (seed & 1) != 0 ? shA : shB;
const int sh2 = (seed & 1) != 0 ? shB : shA;
const int sh3 = (seed & 0x10) != 0 ? sh1 : sh2;
seed1 = (uint8_t)(seed1 >> sh1);
seed2 = (uint8_t)(seed2 >> sh2);
seed3 = (uint8_t)(seed3 >> sh1);
seed4 = (uint8_t)(seed4 >> sh2);
seed5 = (uint8_t)(seed5 >> sh1);
seed6 = (uint8_t)(seed6 >> sh2);
seed7 = (uint8_t)(seed7 >> sh1);
seed8 = (uint8_t)(seed8 >> sh2);
seed9 = (uint8_t)(seed9 >> sh3);
seed10 = (uint8_t)(seed10 >> sh3);
seed11 = (uint8_t)(seed11 >> sh3);
seed12 = (uint8_t)(seed12 >> sh3);
const int a = 0x3f & (seed1 * x + seed2 * y + seed11 * z + (rnum >> 14));
const int b = 0x3f & (seed3 * x + seed4 * y + seed12 * z + (rnum >> 10));
const int c = numPartitions >= 3 ? 0x3f & (seed5 * x + seed6 * y + seed9 * z + (rnum >> 6)) : 0;
const int d = numPartitions >= 4 ? 0x3f & (seed7 * x + seed8 * y + seed10 * z + (rnum >> 2)) : 0;
return a >= b && a >= c && a >= d ? 0 : b >= c && b >= d ? 1 : c >= d ? 2 : 3;
}
DecompressResult setTexelColors(void *dst, ColorEndpointPair *colorEndpoints, TexelWeightPair *texelWeights, int ccs,
uint32_t partitionIndexSeed, int numPartitions, int blockWidth, int blockHeight,
bool isSRGB, bool isLDRMode, const uint32_t *colorEndpointModes)
{
const bool smallBlock = blockWidth * blockHeight < 31;
DecompressResult result = DECOMPRESS_RESULT_VALID_BLOCK;
bool isHDREndpoint[4];
for (int i = 0; i < numPartitions; i++)
isHDREndpoint[i] = isColorEndpointModeHDR(colorEndpointModes[i]);
for (int texelY = 0; texelY < blockHeight; texelY++)
for (int texelX = 0; texelX < blockWidth; texelX++)
{
const int texelNdx = texelY * blockWidth + texelX;
const int colorEndpointNdx = numPartitions == 1 ? 0 :
computeTexelPartition(partitionIndexSeed, texelX, texelY,
0, numPartitions, smallBlock);
DE_ASSERT(colorEndpointNdx < numPartitions);
const UVec4 &e0 = colorEndpoints[colorEndpointNdx].e0;
const UVec4 &e1 = colorEndpoints[colorEndpointNdx].e1;
const TexelWeightPair &weight = texelWeights[texelNdx];
if (isLDRMode && isHDREndpoint[colorEndpointNdx])
{
if (isSRGB)
{
((uint8_t *)dst)[texelNdx * 4 + 0] = 0xff;
((uint8_t *)dst)[texelNdx * 4 + 1] = 0;
((uint8_t *)dst)[texelNdx * 4 + 2] = 0xff;
((uint8_t *)dst)[texelNdx * 4 + 3] = 0xff;
}
else
{
((float *)dst)[texelNdx * 4 + 0] = 1.0f;
((float *)dst)[texelNdx * 4 + 1] = 0;
((float *)dst)[texelNdx * 4 + 2] = 1.0f;
((float *)dst)[texelNdx * 4 + 3] = 1.0f;
}
result = DECOMPRESS_RESULT_ERROR;
}
else
{
for (int channelNdx = 0; channelNdx < 4; channelNdx++)
{
if (!isHDREndpoint[colorEndpointNdx] ||
(channelNdx == 3 && colorEndpointModes[colorEndpointNdx] ==
14)) // \note Alpha for mode 14 is treated the same as LDR.
{
const uint32_t c0 = (e0[channelNdx] << 8) | (isSRGB ? 0x80 : e0[channelNdx]);
const uint32_t c1 = (e1[channelNdx] << 8) | (isSRGB ? 0x80 : e1[channelNdx]);
const uint32_t w = weight.w[ccs == channelNdx ? 1 : 0];
const uint32_t c = (c0 * (64 - w) + c1 * w + 32) / 64;
if (isSRGB)
((uint8_t *)dst)[texelNdx * 4 + channelNdx] = (uint8_t)((c & 0xff00) >> 8);
else
((float *)dst)[texelNdx * 4 + channelNdx] = c == 65535 ? 1.0f : (float)c / 65536.0f;
}
else
{
DE_STATIC_ASSERT((de::meta::TypesSame<deFloat16, uint16_t>::Value));
const uint32_t c0 = e0[channelNdx] << 4;
const uint32_t c1 = e1[channelNdx] << 4;
const uint32_t w = weight.w[ccs == channelNdx ? 1 : 0];
const uint32_t c = (c0 * (64 - w) + c1 * w + 32) / 64;
const uint32_t e = getBits(c, 11, 15);
const uint32_t m = getBits(c, 0, 10);
const uint32_t mt = m < 512 ? 3 * m : m >= 1536 ? 5 * m - 2048 : 4 * m - 512;
const deFloat16 cf = (deFloat16)((e << 10) + (mt >> 3));
((float *)dst)[texelNdx * 4 + channelNdx] = deFloat16To32(isFloat16InfOrNan(cf) ? 0x7bff : cf);
}
}
}
}
return result;
}
DecompressResult decompressBlock(void *dst, const Block128 &blockData, int blockWidth, int blockHeight, bool isSRGB,
bool isLDR)
{
DE_ASSERT(isLDR || !isSRGB);
// Decode block mode.
const ASTCBlockMode blockMode = getASTCBlockMode(blockData.getBits(0, 10));
// Check for block mode errors.
if (blockMode.isError)
{
setASTCErrorColorBlock(dst, blockWidth, blockHeight, isSRGB);
return DECOMPRESS_RESULT_ERROR;
}
// Separate path for void-extent.
if (blockMode.isVoidExtent)
return decodeVoidExtentBlock(dst, blockData, blockWidth, blockHeight, isSRGB, isLDR);
// Compute weight grid values.
const int numWeights = computeNumWeights(blockMode);
const int numWeightDataBits = computeNumRequiredBits(blockMode.weightISEParams, numWeights);
const int numPartitions = (int)blockData.getBits(11, 12) + 1;
// Check for errors in weight grid, partition and dual-plane parameters.
if (numWeights > 64 || numWeightDataBits > 96 || numWeightDataBits < 24 || blockMode.weightGridWidth > blockWidth ||
blockMode.weightGridHeight > blockHeight || (numPartitions == 4 && blockMode.isDualPlane))
{
setASTCErrorColorBlock(dst, blockWidth, blockHeight, isSRGB);
return DECOMPRESS_RESULT_ERROR;
}
// Compute number of bits available for color endpoint data.
const bool isSingleUniqueCem = numPartitions == 1 || blockData.getBits(23, 24) == 0;
const int numConfigDataBits = (numPartitions == 1 ? 17 :
isSingleUniqueCem ? 29 :
25 + 3 * numPartitions) +
(blockMode.isDualPlane ? 2 : 0);
const int numBitsForColorEndpoints = 128 - numWeightDataBits - numConfigDataBits;
const int extraCemBitsStart = 127 - numWeightDataBits -
(isSingleUniqueCem ? -1 :
numPartitions == 4 ? 7 :
numPartitions == 3 ? 4 :
numPartitions == 2 ? 1 :
0);
// Decode color endpoint modes.
uint32_t colorEndpointModes[4];
decodeColorEndpointModes(&colorEndpointModes[0], blockData, numPartitions, extraCemBitsStart);
const int numColorEndpointValues = computeNumColorEndpointValues(colorEndpointModes, numPartitions);
// Check for errors in color endpoint value count.
if (numColorEndpointValues > 18 || numBitsForColorEndpoints < deDivRoundUp32(13 * numColorEndpointValues, 5))
{
setASTCErrorColorBlock(dst, blockWidth, blockHeight, isSRGB);
return DECOMPRESS_RESULT_ERROR;
}
// Compute color endpoints.
ColorEndpointPair colorEndpoints[4];
computeColorEndpoints(&colorEndpoints[0], blockData, &colorEndpointModes[0], numPartitions, numColorEndpointValues,
computeMaximumRangeISEParams(numBitsForColorEndpoints, numColorEndpointValues),
numBitsForColorEndpoints);
// Compute texel weights.
TexelWeightPair texelWeights[MAX_BLOCK_WIDTH * MAX_BLOCK_HEIGHT];
computeTexelWeights(&texelWeights[0], blockData, blockWidth, blockHeight, blockMode);
// Set texel colors.
const int ccs = blockMode.isDualPlane ? (int)blockData.getBits(extraCemBitsStart - 2, extraCemBitsStart - 1) : -1;
const uint32_t partitionIndexSeed = numPartitions > 1 ? blockData.getBits(13, 22) : (uint32_t)-1;
return setTexelColors(dst, &colorEndpoints[0], &texelWeights[0], ccs, partitionIndexSeed, numPartitions, blockWidth,
blockHeight, isSRGB, isLDR, &colorEndpointModes[0]);
}
void decompress(const PixelBufferAccess &dst, const uint8_t *data, bool isSRGB, bool isLDR)
{
DE_ASSERT(isLDR || !isSRGB);
const int blockWidth = dst.getWidth();
const int blockHeight = dst.getHeight();
union
{
uint8_t sRGB[MAX_BLOCK_WIDTH * MAX_BLOCK_HEIGHT * 4];
float linear[MAX_BLOCK_WIDTH * MAX_BLOCK_HEIGHT * 4];
} decompressedBuffer;
const Block128 blockData(data);
decompressBlock(isSRGB ? (void *)&decompressedBuffer.sRGB[0] : (void *)&decompressedBuffer.linear[0], blockData,
dst.getWidth(), dst.getHeight(), isSRGB, isLDR);
if (isSRGB)
{
for (int i = 0; i < blockHeight; i++)
for (int j = 0; j < blockWidth; j++)
{
dst.setPixel(IVec4(decompressedBuffer.sRGB[(i * blockWidth + j) * 4 + 0],
decompressedBuffer.sRGB[(i * blockWidth + j) * 4 + 1],
decompressedBuffer.sRGB[(i * blockWidth + j) * 4 + 2],
decompressedBuffer.sRGB[(i * blockWidth + j) * 4 + 3]),
j, i);
}
}
else
{
for (int i = 0; i < blockHeight; i++)
for (int j = 0; j < blockWidth; j++)
{
dst.setPixel(Vec4(decompressedBuffer.linear[(i * blockWidth + j) * 4 + 0],
decompressedBuffer.linear[(i * blockWidth + j) * 4 + 1],
decompressedBuffer.linear[(i * blockWidth + j) * 4 + 2],
decompressedBuffer.linear[(i * blockWidth + j) * 4 + 3]),
j, i);
}
}
}
// Helper class for setting bits in a 128-bit block.
class AssignBlock128
{
private:
typedef uint64_t Word;
enum
{
WORD_BYTES = sizeof(Word),
WORD_BITS = 8 * WORD_BYTES,
NUM_WORDS = 128 / WORD_BITS
};
DE_STATIC_ASSERT(128 % WORD_BITS == 0);
public:
AssignBlock128(void)
{
for (int wordNdx = 0; wordNdx < NUM_WORDS; wordNdx++)
m_words[wordNdx] = 0;
}
void setBit(int ndx, uint32_t val)
{
DE_ASSERT(de::inBounds(ndx, 0, 128));
DE_ASSERT((val & 1) == val);
const int wordNdx = ndx / WORD_BITS;
const int bitNdx = ndx % WORD_BITS;
m_words[wordNdx] = (m_words[wordNdx] & ~((Word)1 << bitNdx)) | ((Word)val << bitNdx);
}
void setBits(int low, int high, uint32_t bits)
{
DE_ASSERT(de::inBounds(low, 0, 128));
DE_ASSERT(de::inBounds(high, 0, 128));
DE_ASSERT(de::inRange(high - low + 1, 0, 32));
DE_ASSERT((bits & (((Word)1 << (high - low + 1)) - 1)) == bits);
if (high - low + 1 == 0)
return;
const int word0Ndx = low / WORD_BITS;
const int word1Ndx = high / WORD_BITS;
const int lowNdxInW0 = low % WORD_BITS;
if (word0Ndx == word1Ndx)
m_words[word0Ndx] =
(m_words[word0Ndx] & ~((((Word)1 << (high - low + 1)) - 1) << lowNdxInW0)) | ((Word)bits << lowNdxInW0);
else
{
DE_ASSERT(word1Ndx == word0Ndx + 1);
const int highNdxInW1 = high % WORD_BITS;
const int numBitsToSetInW0 = WORD_BITS - lowNdxInW0;
const Word bitsLowMask = ((Word)1 << numBitsToSetInW0) - 1;
m_words[word0Ndx] =
(m_words[word0Ndx] & (((Word)1 << lowNdxInW0) - 1)) | (((Word)bits & bitsLowMask) << lowNdxInW0);
m_words[word1Ndx] = (m_words[word1Ndx] & ~(((Word)1 << (highNdxInW1 + 1)) - 1)) |
(((Word)bits & ~bitsLowMask) >> numBitsToSetInW0);
}
}
void assignToMemory(uint8_t *dst) const
{
for (int wordNdx = 0; wordNdx < NUM_WORDS; wordNdx++)
{
for (int byteNdx = 0; byteNdx < WORD_BYTES; byteNdx++)
dst[wordNdx * WORD_BYTES + byteNdx] = (uint8_t)((m_words[wordNdx] >> (8 * byteNdx)) & 0xff);
}
}
void pushBytesToVector(vector<uint8_t> &dst) const
{
const int assignStartIndex = (int)dst.size();
dst.resize(dst.size() + BLOCK_SIZE_BYTES);
assignToMemory(&dst[assignStartIndex]);
}
private:
Word m_words[NUM_WORDS];
};
// A helper for sequential access into a AssignBlock128.
class BitAssignAccessStream
{
public:
BitAssignAccessStream(AssignBlock128 &dst, int startNdxInSrc, int length, bool forward)
: m_dst(dst)
, m_startNdxInSrc(startNdxInSrc)
, m_length(length)
, m_forward(forward)
, m_ndx(0)
{
}
// Set the next num bits. Bits at positions greater than or equal to m_length are not touched.
void setNext(int num, uint32_t bits)
{
DE_ASSERT((bits & (((uint64_t)1 << num) - 1)) == bits);
if (num == 0 || m_ndx >= m_length)
return;
const int end = m_ndx + num;
const int numBitsToDst = de::max(0, de::min(m_length, end) - m_ndx);
const int low = m_ndx;
const int high = m_ndx + numBitsToDst - 1;
const uint32_t actualBits = getBits(bits, 0, numBitsToDst - 1);
m_ndx += num;
return m_forward ?
m_dst.setBits(m_startNdxInSrc + low, m_startNdxInSrc + high, actualBits) :
m_dst.setBits(m_startNdxInSrc - high, m_startNdxInSrc - low, reverseBits(actualBits, numBitsToDst));
}
private:
AssignBlock128 &m_dst;
const int m_startNdxInSrc;
const int m_length;
const bool m_forward;
int m_ndx;
};
struct VoidExtentParams
{
DE_STATIC_ASSERT((de::meta::TypesSame<deFloat16, uint16_t>::Value));
bool isHDR;
uint16_t r;
uint16_t g;
uint16_t b;
uint16_t a;
// \note Currently extent coordinates are all set to all-ones.
VoidExtentParams(bool isHDR_, uint16_t r_, uint16_t g_, uint16_t b_, uint16_t a_)
: isHDR(isHDR_)
, r(r_)
, g(g_)
, b(b_)
, a(a_)
{
}
};
static AssignBlock128 generateVoidExtentBlock(const VoidExtentParams &params)
{
AssignBlock128 block;
block.setBits(0, 8, 0x1fc); // \note Marks void-extent block.
block.setBit(9, params.isHDR);
block.setBits(10, 11, 3); // \note Spec shows that these bits are both set, although they serve no purpose.
// Extent coordinates - currently all-ones.
block.setBits(12, 24, 0x1fff);
block.setBits(25, 37, 0x1fff);
block.setBits(38, 50, 0x1fff);
block.setBits(51, 63, 0x1fff);
DE_ASSERT(!params.isHDR || (!isFloat16InfOrNan(params.r) && !isFloat16InfOrNan(params.g) &&
!isFloat16InfOrNan(params.b) && !isFloat16InfOrNan(params.a)));
block.setBits(64, 79, params.r);
block.setBits(80, 95, params.g);
block.setBits(96, 111, params.b);
block.setBits(112, 127, params.a);
return block;
}
// An input array of ISE inputs for an entire ASTC block. Can be given as either single values in the
// range [0, maximumValueOfISERange] or as explicit block value specifications. The latter is needed
// so we can test all possible values of T and Q in a block, since multiple T or Q values may map
// to the same set of decoded values.
struct ISEInput
{
struct Block
{
uint32_t tOrQValue; //!< The 8-bit T or 7-bit Q in a trit or quint ISE block.
uint32_t bitValues[5];
};
bool isGivenInBlockForm;
union
{
//!< \note 64 comes from the maximum number of weight values in an ASTC block.
uint32_t plain[64];
Block block[64];
} value;
ISEInput(void) : isGivenInBlockForm(false)
{
}
};
static inline uint32_t computeISERangeMax(const ISEParams &iseParams)
{
switch (iseParams.mode)
{
case ISEMODE_TRIT:
return (1u << iseParams.numBits) * 3 - 1;
case ISEMODE_QUINT:
return (1u << iseParams.numBits) * 5 - 1;
case ISEMODE_PLAIN_BIT:
return (1u << iseParams.numBits) - 1;
default:
DE_ASSERT(false);
return -1;
}
}
struct NormalBlockParams
{
int weightGridWidth;
int weightGridHeight;
ISEParams weightISEParams;
bool isDualPlane;
uint32_t ccs; //! \note Irrelevant if !isDualPlane.
int numPartitions;
uint32_t colorEndpointModes[4];
// \note Below members are irrelevant if numPartitions == 1.
bool isMultiPartSingleCemMode; //! \note If true, the single CEM is at colorEndpointModes[0].
uint32_t partitionSeed;
NormalBlockParams(void)
: weightGridWidth(-1)
, weightGridHeight(-1)
, weightISEParams(ISEMODE_LAST, -1)
, isDualPlane(true)
, ccs((uint32_t)-1)
, numPartitions(-1)
, isMultiPartSingleCemMode(false)
, partitionSeed((uint32_t)-1)
{
colorEndpointModes[0] = 0;
colorEndpointModes[1] = 0;
colorEndpointModes[2] = 0;
colorEndpointModes[3] = 0;
}
};
struct NormalBlockISEInputs
{
ISEInput weight;
ISEInput endpoint;
NormalBlockISEInputs(void) : weight(), endpoint()
{
}
};
static inline int computeNumWeights(const NormalBlockParams &params)
{
return params.weightGridWidth * params.weightGridHeight * (params.isDualPlane ? 2 : 1);
}
static inline int computeNumBitsForColorEndpoints(const NormalBlockParams &params)
{
const int numWeightBits = computeNumRequiredBits(params.weightISEParams, computeNumWeights(params));
const int numConfigDataBits = (params.numPartitions == 1 ? 17 :
params.isMultiPartSingleCemMode ? 29 :
25 + 3 * params.numPartitions) +
(params.isDualPlane ? 2 : 0);
return 128 - numWeightBits - numConfigDataBits;
}
static inline int computeNumColorEndpointValues(const uint32_t *endpointModes, int numPartitions,
bool isMultiPartSingleCemMode)
{
if (isMultiPartSingleCemMode)
return numPartitions * computeNumColorEndpointValues(endpointModes[0]);
else
{
int result = 0;
for (int i = 0; i < numPartitions; i++)
result += computeNumColorEndpointValues(endpointModes[i]);
return result;
}
}
static inline bool isValidBlockParams(const NormalBlockParams &params, int blockWidth, int blockHeight)
{
const int numWeights = computeNumWeights(params);
const int numWeightBits = computeNumRequiredBits(params.weightISEParams, numWeights);
const int numColorEndpointValues = computeNumColorEndpointValues(
&params.colorEndpointModes[0], params.numPartitions, params.isMultiPartSingleCemMode);
const int numBitsForColorEndpoints = computeNumBitsForColorEndpoints(params);
return numWeights <= 64 && de::inRange(numWeightBits, 24, 96) && params.weightGridWidth <= blockWidth &&
params.weightGridHeight <= blockHeight && !(params.numPartitions == 4 && params.isDualPlane) &&
numColorEndpointValues <= 18 && numBitsForColorEndpoints >= deDivRoundUp32(13 * numColorEndpointValues, 5);
}
// Write bits 0 to 10 of an ASTC block.
static void writeBlockMode(AssignBlock128 &dst, const NormalBlockParams &blockParams)
{
const uint32_t d = blockParams.isDualPlane != 0;
// r and h initialized in switch below.
uint32_t r;
uint32_t h;
// a, b and blockModeLayoutNdx initialized in block mode layout index detecting loop below.
uint32_t a = (uint32_t)-1;
uint32_t b = (uint32_t)-1;
int blockModeLayoutNdx;
// Find the values of r and h (ISE range).
switch (computeISERangeMax(blockParams.weightISEParams))
{
case 1:
r = 2;
h = 0;
break;
case 2:
r = 3;
h = 0;
break;
case 3:
r = 4;
h = 0;
break;
case 4:
r = 5;
h = 0;
break;
case 5:
r = 6;
h = 0;
break;
case 7:
r = 7;
h = 0;
break;
case 9:
r = 2;
h = 1;
break;
case 11:
r = 3;
h = 1;
break;
case 15:
r = 4;
h = 1;
break;
case 19:
r = 5;
h = 1;
break;
case 23:
r = 6;
h = 1;
break;
case 31:
r = 7;
h = 1;
break;
default:
DE_ASSERT(false);
r = (uint32_t)-1;
h = (uint32_t)-1;
}
// Find block mode layout index, i.e. appropriate row in the "2d block mode layout" table in ASTC spec.
{
enum BlockModeLayoutABVariable
{
Z = 0,
A = 1,
B = 2
};
static const struct BlockModeLayout
{
int aNumBits;
int bNumBits;
BlockModeLayoutABVariable gridWidthVariableTerm;
int gridWidthConstantTerm;
BlockModeLayoutABVariable gridHeightVariableTerm;
int gridHeightConstantTerm;
} blockModeLayouts[] = {{2, 2, B, 4, A, 2}, {2, 2, B, 8, A, 2}, {2, 2, A, 2, B, 8}, {2, 1, A, 2, B, 6},
{2, 1, B, 2, A, 2}, {2, 0, Z, 12, A, 2}, {2, 0, A, 2, Z, 12}, {0, 0, Z, 6, Z, 10},
{0, 0, Z, 10, Z, 6}, {2, 2, A, 6, B, 6}};
for (blockModeLayoutNdx = 0; blockModeLayoutNdx < DE_LENGTH_OF_ARRAY(blockModeLayouts); blockModeLayoutNdx++)
{
const BlockModeLayout &layout = blockModeLayouts[blockModeLayoutNdx];
const int aMax = (1 << layout.aNumBits) - 1;
const int bMax = (1 << layout.bNumBits) - 1;
const int variableOffsetsMax[3] = {0, aMax, bMax};
const int widthMin = layout.gridWidthConstantTerm;
const int heightMin = layout.gridHeightConstantTerm;
const int widthMax = widthMin + variableOffsetsMax[layout.gridWidthVariableTerm];
const int heightMax = heightMin + variableOffsetsMax[layout.gridHeightVariableTerm];
DE_ASSERT(layout.gridWidthVariableTerm != layout.gridHeightVariableTerm ||
layout.gridWidthVariableTerm == Z);
if (de::inRange(blockParams.weightGridWidth, widthMin, widthMax) &&
de::inRange(blockParams.weightGridHeight, heightMin, heightMax))
{
uint32_t defaultvalue = 0;
uint32_t &widthVariable = layout.gridWidthVariableTerm == A ? a :
layout.gridWidthVariableTerm == B ? b :
defaultvalue;
uint32_t &heightVariable = layout.gridHeightVariableTerm == A ? a :
layout.gridHeightVariableTerm == B ? b :
defaultvalue;
widthVariable = blockParams.weightGridWidth - layout.gridWidthConstantTerm;
heightVariable = blockParams.weightGridHeight - layout.gridHeightConstantTerm;
break;
}
}
}
// Set block mode bits.
const uint32_t a0 = getBit(a, 0);
const uint32_t a1 = getBit(a, 1);
const uint32_t b0 = getBit(b, 0);
const uint32_t b1 = getBit(b, 1);
const uint32_t r0 = getBit(r, 0);
const uint32_t r1 = getBit(r, 1);
const uint32_t r2 = getBit(r, 2);
#define SB(NDX, VAL) dst.setBit((NDX), (VAL))
#define ASSIGN_BITS(B10, B9, B8, B7, B6, B5, B4, B3, B2, B1, B0) \
do \
{ \
SB(10, (B10)); \
SB(9, (B9)); \
SB(8, (B8)); \
SB(7, (B7)); \
SB(6, (B6)); \
SB(5, (B5)); \
SB(4, (B4)); \
SB(3, (B3)); \
SB(2, (B2)); \
SB(1, (B1)); \
SB(0, (B0)); \
} while (false)
switch (blockModeLayoutNdx)
{
case 0:
ASSIGN_BITS(d, h, b1, b0, a1, a0, r0, 0, 0, r2, r1);
break;
case 1:
ASSIGN_BITS(d, h, b1, b0, a1, a0, r0, 0, 1, r2, r1);
break;
case 2:
ASSIGN_BITS(d, h, b1, b0, a1, a0, r0, 1, 0, r2, r1);
break;
case 3:
ASSIGN_BITS(d, h, 0, b, a1, a0, r0, 1, 1, r2, r1);
break;
case 4:
ASSIGN_BITS(d, h, 1, b, a1, a0, r0, 1, 1, r2, r1);
break;
case 5:
ASSIGN_BITS(d, h, 0, 0, a1, a0, r0, r2, r1, 0, 0);
break;
case 6:
ASSIGN_BITS(d, h, 0, 1, a1, a0, r0, r2, r1, 0, 0);
break;
case 7:
ASSIGN_BITS(d, h, 1, 1, 0, 0, r0, r2, r1, 0, 0);
break;
case 8:
ASSIGN_BITS(d, h, 1, 1, 0, 1, r0, r2, r1, 0, 0);
break;
case 9:
ASSIGN_BITS(b1, b0, 1, 0, a1, a0, r0, r2, r1, 0, 0);
DE_ASSERT(d == 0 && h == 0);
break;
default:
DE_ASSERT(false);
}
#undef ASSIGN_BITS
#undef SB
}
// Write color endpoint mode data of an ASTC block.
static void writeColorEndpointModes(AssignBlock128 &dst, const uint32_t *colorEndpointModes,
bool isMultiPartSingleCemMode, int numPartitions, int extraCemBitsStart)
{
if (numPartitions == 1)
dst.setBits(13, 16, colorEndpointModes[0]);
else
{
if (isMultiPartSingleCemMode)
{
dst.setBits(23, 24, 0);
dst.setBits(25, 28, colorEndpointModes[0]);
}
else
{
DE_ASSERT(numPartitions > 0);
const uint32_t minCem = *std::min_element(&colorEndpointModes[0], &colorEndpointModes[numPartitions]);
const uint32_t maxCem = *std::max_element(&colorEndpointModes[0], &colorEndpointModes[numPartitions]);
const uint32_t minCemClass = minCem / 4;
const uint32_t maxCemClass = maxCem / 4;
DE_ASSERT(maxCemClass - minCemClass <= 1);
DE_UNREF(minCemClass); // \note For non-debug builds.
const uint32_t highLevelSelector = de::max(1u, maxCemClass);
dst.setBits(23, 24, highLevelSelector);
for (int partNdx = 0; partNdx < numPartitions; partNdx++)
{
const uint32_t c = colorEndpointModes[partNdx] / 4 == highLevelSelector ? 1 : 0;
const uint32_t m = colorEndpointModes[partNdx] % 4;
const uint32_t lowMBit0Ndx = numPartitions + 2 * partNdx;
const uint32_t lowMBit1Ndx = numPartitions + 2 * partNdx + 1;
dst.setBit(25 + partNdx, c);
dst.setBit(lowMBit0Ndx < 4 ? 25 + lowMBit0Ndx : extraCemBitsStart + lowMBit0Ndx - 4, getBit(m, 0));
dst.setBit(lowMBit1Ndx < 4 ? 25 + lowMBit1Ndx : extraCemBitsStart + lowMBit1Ndx - 4, getBit(m, 1));
}
}
}
}
static void encodeISETritBlock(BitAssignAccessStream &dst, int numBits, bool fromExplicitInputBlock,
const ISEInput::Block &blockInput, const uint32_t *nonBlockInput, int numValues)
{
// tritBlockTValue[t0][t1][t2][t3][t4] is a value of T (not necessarily the only one) that will yield the given trits when decoded.
static const uint32_t tritBlockTValue[3][3][3][3][3] = {{{{{0, 128, 96}, {32, 160, 224}, {64, 192, 28}},
{{16, 144, 112}, {48, 176, 240}, {80, 208, 156}},
{{3, 131, 99}, {35, 163, 227}, {67, 195, 31}}},
{{{4, 132, 100}, {36, 164, 228}, {68, 196, 60}},
{{20, 148, 116}, {52, 180, 244}, {84, 212, 188}},
{{19, 147, 115}, {51, 179, 243}, {83, 211, 159}}},
{{{8, 136, 104}, {40, 168, 232}, {72, 200, 92}},
{{24, 152, 120}, {56, 184, 248}, {88, 216, 220}},
{{12, 140, 108}, {44, 172, 236}, {76, 204, 124}}}},
{{{{1, 129, 97}, {33, 161, 225}, {65, 193, 29}},
{{17, 145, 113}, {49, 177, 241}, {81, 209, 157}},
{{7, 135, 103}, {39, 167, 231}, {71, 199, 63}}},
{{{5, 133, 101}, {37, 165, 229}, {69, 197, 61}},
{{21, 149, 117}, {53, 181, 245}, {85, 213, 189}},
{{23, 151, 119}, {55, 183, 247}, {87, 215, 191}}},
{{{9, 137, 105}, {41, 169, 233}, {73, 201, 93}},
{{25, 153, 121}, {57, 185, 249}, {89, 217, 221}},
{{13, 141, 109}, {45, 173, 237}, {77, 205, 125}}}},
{{{{2, 130, 98}, {34, 162, 226}, {66, 194, 30}},
{{18, 146, 114}, {50, 178, 242}, {82, 210, 158}},
{{11, 139, 107}, {43, 171, 235}, {75, 203, 95}}},
{{{6, 134, 102}, {38, 166, 230}, {70, 198, 62}},
{{22, 150, 118}, {54, 182, 246}, {86, 214, 190}},
{{27, 155, 123}, {59, 187, 251}, {91, 219, 223}}},
{{{10, 138, 106}, {42, 170, 234}, {74, 202, 94}},
{{26, 154, 122}, {58, 186, 250}, {90, 218, 222}},
{{14, 142, 110}, {46, 174, 238}, {78, 206, 126}}}}};
DE_ASSERT(de::inRange(numValues, 1, 5));
uint32_t tritParts[5];
uint32_t bitParts[5];
for (int i = 0; i < 5; i++)
{
if (i < numValues)
{
if (fromExplicitInputBlock)
{
bitParts[i] = blockInput.bitValues[i];
tritParts[i] = -1; // \note Won't be used, but silences warning.
}
else
{
// \todo [2016-01-20 pyry] numBits = 0 doesn't make sense
bitParts[i] = numBits > 0 ? getBits(nonBlockInput[i], 0, numBits - 1) : 0;
tritParts[i] = nonBlockInput[i] >> numBits;
}
}
else
{
bitParts[i] = 0;
tritParts[i] = 0;
}
}
const uint32_t T = fromExplicitInputBlock ?
blockInput.tOrQValue :
tritBlockTValue[tritParts[0]][tritParts[1]][tritParts[2]][tritParts[3]][tritParts[4]];
dst.setNext(numBits, bitParts[0]);
dst.setNext(2, getBits(T, 0, 1));
dst.setNext(numBits, bitParts[1]);
dst.setNext(2, getBits(T, 2, 3));
dst.setNext(numBits, bitParts[2]);
dst.setNext(1, getBit(T, 4));
dst.setNext(numBits, bitParts[3]);
dst.setNext(2, getBits(T, 5, 6));
dst.setNext(numBits, bitParts[4]);
dst.setNext(1, getBit(T, 7));
}
static void encodeISEQuintBlock(BitAssignAccessStream &dst, int numBits, bool fromExplicitInputBlock,
const ISEInput::Block &blockInput, const uint32_t *nonBlockInput, int numValues)
{
// quintBlockQValue[q0][q1][q2] is a value of Q (not necessarily the only one) that will yield the given quints when decoded.
static const uint32_t quintBlockQValue[5][5][5] = {{{0, 32, 64, 96, 102},
{8, 40, 72, 104, 110},
{16, 48, 80, 112, 118},
{24, 56, 88, 120, 126},
{5, 37, 69, 101, 39}},
{{1, 33, 65, 97, 103},
{9, 41, 73, 105, 111},
{17, 49, 81, 113, 119},
{25, 57, 89, 121, 127},
{13, 45, 77, 109, 47}},
{{2, 34, 66, 98, 70},
{10, 42, 74, 106, 78},
{18, 50, 82, 114, 86},
{26, 58, 90, 122, 94},
{21, 53, 85, 117, 55}},
{{3, 35, 67, 99, 71},
{11, 43, 75, 107, 79},
{19, 51, 83, 115, 87},
{27, 59, 91, 123, 95},
{29, 61, 93, 125, 63}},
{{4, 36, 68, 100, 38},
{12, 44, 76, 108, 46},
{20, 52, 84, 116, 54},
{28, 60, 92, 124, 62},
{6, 14, 22, 30, 7}}};
DE_ASSERT(de::inRange(numValues, 1, 3));
uint32_t quintParts[3];
uint32_t bitParts[3];
for (int i = 0; i < 3; i++)
{
if (i < numValues)
{
if (fromExplicitInputBlock)
{
bitParts[i] = blockInput.bitValues[i];
quintParts[i] = -1; // \note Won't be used, but silences warning.
}
else
{
// \todo [2016-01-20 pyry] numBits = 0 doesn't make sense
bitParts[i] = numBits > 0 ? getBits(nonBlockInput[i], 0, numBits - 1) : 0;
quintParts[i] = nonBlockInput[i] >> numBits;
}
}
else
{
bitParts[i] = 0;
quintParts[i] = 0;
}
}
const uint32_t Q =
fromExplicitInputBlock ? blockInput.tOrQValue : quintBlockQValue[quintParts[0]][quintParts[1]][quintParts[2]];
dst.setNext(numBits, bitParts[0]);
dst.setNext(3, getBits(Q, 0, 2));
dst.setNext(numBits, bitParts[1]);
dst.setNext(2, getBits(Q, 3, 4));
dst.setNext(numBits, bitParts[2]);
dst.setNext(2, getBits(Q, 5, 6));
}
static void encodeISEBitBlock(BitAssignAccessStream &dst, int numBits, uint32_t value)
{
DE_ASSERT(de::inRange(value, 0u, (1u << numBits) - 1));
dst.setNext(numBits, value);
}
static void encodeISE(BitAssignAccessStream &dst, const ISEParams &params, const ISEInput &input, int numValues)
{
if (params.mode == ISEMODE_TRIT)
{
const int numBlocks = deDivRoundUp32(numValues, 5);
for (int blockNdx = 0; blockNdx < numBlocks; blockNdx++)
{
const int numValuesInBlock = blockNdx == numBlocks - 1 ? numValues - 5 * (numBlocks - 1) : 5;
encodeISETritBlock(dst, params.numBits, input.isGivenInBlockForm,
input.isGivenInBlockForm ? input.value.block[blockNdx] : ISEInput::Block(),
input.isGivenInBlockForm ? DE_NULL : &input.value.plain[5 * blockNdx], numValuesInBlock);
}
}
else if (params.mode == ISEMODE_QUINT)
{
const int numBlocks = deDivRoundUp32(numValues, 3);
for (int blockNdx = 0; blockNdx < numBlocks; blockNdx++)
{
const int numValuesInBlock = blockNdx == numBlocks - 1 ? numValues - 3 * (numBlocks - 1) : 3;
encodeISEQuintBlock(dst, params.numBits, input.isGivenInBlockForm,
input.isGivenInBlockForm ? input.value.block[blockNdx] : ISEInput::Block(),
input.isGivenInBlockForm ? DE_NULL : &input.value.plain[3 * blockNdx],
numValuesInBlock);
}
}
else
{
DE_ASSERT(params.mode == ISEMODE_PLAIN_BIT);
for (int i = 0; i < numValues; i++)
encodeISEBitBlock(dst, params.numBits,
input.isGivenInBlockForm ? input.value.block[i].bitValues[0] : input.value.plain[i]);
}
}
static void writeWeightData(AssignBlock128 &dst, const ISEParams &iseParams, const ISEInput &input, int numWeights)
{
const int numWeightBits = computeNumRequiredBits(iseParams, numWeights);
BitAssignAccessStream access(dst, 127, numWeightBits, false);
encodeISE(access, iseParams, input, numWeights);
}
static void writeColorEndpointData(AssignBlock128 &dst, const ISEParams &iseParams, const ISEInput &input,
int numEndpoints, int numBitsForColorEndpoints, int colorEndpointDataStartNdx)
{
BitAssignAccessStream access(dst, colorEndpointDataStartNdx, numBitsForColorEndpoints, true);
encodeISE(access, iseParams, input, numEndpoints);
}
static AssignBlock128 generateNormalBlock(const NormalBlockParams &blockParams, int blockWidth, int blockHeight,
const NormalBlockISEInputs &iseInputs)
{
DE_ASSERT(isValidBlockParams(blockParams, blockWidth, blockHeight));
DE_UNREF(blockWidth); // \note For non-debug builds.
DE_UNREF(blockHeight); // \note For non-debug builds.
AssignBlock128 block;
const int numWeights = computeNumWeights(blockParams);
const int numWeightBits = computeNumRequiredBits(blockParams.weightISEParams, numWeights);
writeBlockMode(block, blockParams);
block.setBits(11, 12, blockParams.numPartitions - 1);
if (blockParams.numPartitions > 1)
block.setBits(13, 22, blockParams.partitionSeed);
{
const int extraCemBitsStart = 127 - numWeightBits -
(blockParams.numPartitions == 1 || blockParams.isMultiPartSingleCemMode ? -1 :
blockParams.numPartitions == 4 ? 7 :
blockParams.numPartitions == 3 ? 4 :
blockParams.numPartitions == 2 ? 1 :
0);
writeColorEndpointModes(block, &blockParams.colorEndpointModes[0], blockParams.isMultiPartSingleCemMode,
blockParams.numPartitions, extraCemBitsStart);
if (blockParams.isDualPlane)
block.setBits(extraCemBitsStart - 2, extraCemBitsStart - 1, blockParams.ccs);
}
writeWeightData(block, blockParams.weightISEParams, iseInputs.weight, numWeights);
{
const int numColorEndpointValues = computeNumColorEndpointValues(
&blockParams.colorEndpointModes[0], blockParams.numPartitions, blockParams.isMultiPartSingleCemMode);
const int numBitsForColorEndpoints = computeNumBitsForColorEndpoints(blockParams);
const int colorEndpointDataStartNdx = blockParams.numPartitions == 1 ? 17 : 29;
const ISEParams &colorEndpointISEParams =
computeMaximumRangeISEParams(numBitsForColorEndpoints, numColorEndpointValues);
writeColorEndpointData(block, colorEndpointISEParams, iseInputs.endpoint, numColorEndpointValues,
numBitsForColorEndpoints, colorEndpointDataStartNdx);
}
return block;
}
// Generate default ISE inputs for weight and endpoint data - gradient-ish values.
static NormalBlockISEInputs generateDefaultISEInputs(const NormalBlockParams &blockParams)
{
NormalBlockISEInputs result;
{
result.weight.isGivenInBlockForm = false;
const int numWeights = computeNumWeights(blockParams);
const int weightRangeMax = computeISERangeMax(blockParams.weightISEParams);
if (blockParams.isDualPlane)
{
for (int i = 0; i < numWeights; i += 2)
result.weight.value.plain[i] = (i * weightRangeMax + (numWeights - 1) / 2) / (numWeights - 1);
for (int i = 1; i < numWeights; i += 2)
result.weight.value.plain[i] =
weightRangeMax - (i * weightRangeMax + (numWeights - 1) / 2) / (numWeights - 1);
}
else
{
for (int i = 0; i < numWeights; i++)
result.weight.value.plain[i] = (i * weightRangeMax + (numWeights - 1) / 2) / (numWeights - 1);
}
}
{
result.endpoint.isGivenInBlockForm = false;
const int numColorEndpointValues = computeNumColorEndpointValues(
&blockParams.colorEndpointModes[0], blockParams.numPartitions, blockParams.isMultiPartSingleCemMode);
const int numBitsForColorEndpoints = computeNumBitsForColorEndpoints(blockParams);
const ISEParams &colorEndpointISEParams =
computeMaximumRangeISEParams(numBitsForColorEndpoints, numColorEndpointValues);
const int colorEndpointRangeMax = computeISERangeMax(colorEndpointISEParams);
for (int i = 0; i < numColorEndpointValues; i++)
result.endpoint.value.plain[i] =
(i * colorEndpointRangeMax + (numColorEndpointValues - 1) / 2) / (numColorEndpointValues - 1);
}
return result;
}
static const ISEParams s_weightISEParamsCandidates[] = {
ISEParams(ISEMODE_PLAIN_BIT, 1), ISEParams(ISEMODE_TRIT, 0), ISEParams(ISEMODE_PLAIN_BIT, 2),
ISEParams(ISEMODE_QUINT, 0), ISEParams(ISEMODE_TRIT, 1), ISEParams(ISEMODE_PLAIN_BIT, 3),
ISEParams(ISEMODE_QUINT, 1), ISEParams(ISEMODE_TRIT, 2), ISEParams(ISEMODE_PLAIN_BIT, 4),
ISEParams(ISEMODE_QUINT, 2), ISEParams(ISEMODE_TRIT, 3), ISEParams(ISEMODE_PLAIN_BIT, 5)};
void generateRandomBlock(uint8_t *dst, const IVec3 &blockSize, de::Random &rnd)
{
DE_ASSERT(blockSize.z() == 1);
if (rnd.getFloat() < 0.1f)
{
// Void extent block.
const bool isVoidExtentHDR = rnd.getBool();
const uint16_t r = isVoidExtentHDR ? deFloat32To16(rnd.getFloat(0.0f, 1.0f)) : (uint16_t)rnd.getInt(0, 0xffff);
const uint16_t g = isVoidExtentHDR ? deFloat32To16(rnd.getFloat(0.0f, 1.0f)) : (uint16_t)rnd.getInt(0, 0xffff);
const uint16_t b = isVoidExtentHDR ? deFloat32To16(rnd.getFloat(0.0f, 1.0f)) : (uint16_t)rnd.getInt(0, 0xffff);
const uint16_t a = isVoidExtentHDR ? deFloat32To16(rnd.getFloat(0.0f, 1.0f)) : (uint16_t)rnd.getInt(0, 0xffff);
generateVoidExtentBlock(VoidExtentParams(isVoidExtentHDR, r, g, b, a)).assignToMemory(dst);
}
else
{
// Not void extent block.
// Generate block params.
NormalBlockParams blockParams;
do
{
blockParams.weightGridWidth = rnd.getInt(2, blockSize.x());
blockParams.weightGridHeight = rnd.getInt(2, blockSize.y());
blockParams.weightISEParams =
s_weightISEParamsCandidates[rnd.getInt(0, DE_LENGTH_OF_ARRAY(s_weightISEParamsCandidates) - 1)];
blockParams.numPartitions = rnd.getInt(1, 4);
blockParams.isMultiPartSingleCemMode = rnd.getFloat() < 0.25f;
blockParams.isDualPlane = blockParams.numPartitions != 4 && rnd.getBool();
blockParams.ccs = rnd.getInt(0, 3);
blockParams.partitionSeed = rnd.getInt(0, 1023);
blockParams.colorEndpointModes[0] = rnd.getInt(0, 15);
{
const int cemDiff = blockParams.isMultiPartSingleCemMode ? 0 :
blockParams.colorEndpointModes[0] == 0 ? 1 :
blockParams.colorEndpointModes[0] == 15 ? -1 :
rnd.getBool() ? 1 :
-1;
for (int i = 1; i < blockParams.numPartitions; i++)
blockParams.colorEndpointModes[i] =
blockParams.colorEndpointModes[0] + (cemDiff == -1 ? rnd.getInt(-1, 0) :
cemDiff == 1 ? rnd.getInt(0, 1) :
0);
}
} while (!isValidBlockParams(blockParams, blockSize.x(), blockSize.y()));
// Generate ISE inputs for both weight and endpoint data.
NormalBlockISEInputs iseInputs;
for (int weightOrEndpoints = 0; weightOrEndpoints <= 1; weightOrEndpoints++)
{
const bool setWeights = weightOrEndpoints == 0;
const int numValues = setWeights ? computeNumWeights(blockParams) :
computeNumColorEndpointValues(&blockParams.colorEndpointModes[0],
blockParams.numPartitions,
blockParams.isMultiPartSingleCemMode);
const ISEParams iseParams =
setWeights ? blockParams.weightISEParams :
computeMaximumRangeISEParams(computeNumBitsForColorEndpoints(blockParams), numValues);
ISEInput &iseInput = setWeights ? iseInputs.weight : iseInputs.endpoint;
iseInput.isGivenInBlockForm = rnd.getBool();
if (iseInput.isGivenInBlockForm)
{
const int numValuesPerISEBlock = iseParams.mode == ISEMODE_TRIT ? 5 :
iseParams.mode == ISEMODE_QUINT ? 3 :
1;
const int iseBitMax = (1 << iseParams.numBits) - 1;
const int numISEBlocks = deDivRoundUp32(numValues, numValuesPerISEBlock);
for (int iseBlockNdx = 0; iseBlockNdx < numISEBlocks; iseBlockNdx++)
{
iseInput.value.block[iseBlockNdx].tOrQValue = rnd.getInt(0, 255);
for (int i = 0; i < numValuesPerISEBlock; i++)
iseInput.value.block[iseBlockNdx].bitValues[i] = rnd.getInt(0, iseBitMax);
}
}
else
{
const int rangeMax = computeISERangeMax(iseParams);
for (int valueNdx = 0; valueNdx < numValues; valueNdx++)
iseInput.value.plain[valueNdx] = rnd.getInt(0, rangeMax);
}
}
generateNormalBlock(blockParams, blockSize.x(), blockSize.y(), iseInputs).assignToMemory(dst);
}
}
} // namespace
// Generate block data for a given BlockTestType and format.
void generateBlockCaseTestData(vector<uint8_t> &dst, CompressedTexFormat format, BlockTestType testType)
{
DE_ASSERT(isAstcFormat(format));
DE_ASSERT(!(isAstcSRGBFormat(format) && isBlockTestTypeHDROnly(testType)));
const IVec3 blockSize = getBlockPixelSize(format);
DE_ASSERT(blockSize.z() == 1);
switch (testType)
{
case BLOCK_TEST_TYPE_VOID_EXTENT_LDR:
// Generate a gradient-like set of LDR void-extent blocks.
{
const int numBlocks = 1 << 13;
const uint32_t numValues = 1 << 16;
dst.reserve(numBlocks * BLOCK_SIZE_BYTES);
for (int blockNdx = 0; blockNdx < numBlocks; blockNdx++)
{
const uint32_t baseValue = blockNdx * (numValues - 1) / (numBlocks - 1);
const uint16_t r = (uint16_t)((baseValue + numValues * 0 / 4) % numValues);
const uint16_t g = (uint16_t)((baseValue + numValues * 1 / 4) % numValues);
const uint16_t b = (uint16_t)((baseValue + numValues * 2 / 4) % numValues);
const uint16_t a = (uint16_t)((baseValue + numValues * 3 / 4) % numValues);
AssignBlock128 block;
generateVoidExtentBlock(VoidExtentParams(false, r, g, b, a)).pushBytesToVector(dst);
}
break;
}
case BLOCK_TEST_TYPE_VOID_EXTENT_HDR:
// Generate a gradient-like set of HDR void-extent blocks, with values ranging from the largest finite negative to largest finite positive of fp16.
{
const float minValue = -65504.0f;
const float maxValue = +65504.0f;
const int numBlocks = 1 << 13;
dst.reserve(numBlocks * BLOCK_SIZE_BYTES);
for (int blockNdx = 0; blockNdx < numBlocks; blockNdx++)
{
const int rNdx = (blockNdx + numBlocks * 0 / 4) % numBlocks;
const int gNdx = (blockNdx + numBlocks * 1 / 4) % numBlocks;
const int bNdx = (blockNdx + numBlocks * 2 / 4) % numBlocks;
const int aNdx = (blockNdx + numBlocks * 3 / 4) % numBlocks;
const deFloat16 r =
deFloat32To16(minValue + (float)rNdx * (maxValue - minValue) / (float)(numBlocks - 1));
const deFloat16 g =
deFloat32To16(minValue + (float)gNdx * (maxValue - minValue) / (float)(numBlocks - 1));
const deFloat16 b =
deFloat32To16(minValue + (float)bNdx * (maxValue - minValue) / (float)(numBlocks - 1));
const deFloat16 a =
deFloat32To16(minValue + (float)aNdx * (maxValue - minValue) / (float)(numBlocks - 1));
generateVoidExtentBlock(VoidExtentParams(true, r, g, b, a)).pushBytesToVector(dst);
}
break;
}
case BLOCK_TEST_TYPE_WEIGHT_GRID:
// Generate different combinations of plane count, weight ISE params, and grid size.
{
for (int isDualPlane = 0; isDualPlane <= 1; isDualPlane++)
for (int iseParamsNdx = 0; iseParamsNdx < DE_LENGTH_OF_ARRAY(s_weightISEParamsCandidates);
iseParamsNdx++)
for (int weightGridWidth = 2; weightGridWidth <= 12; weightGridWidth++)
for (int weightGridHeight = 2; weightGridHeight <= 12; weightGridHeight++)
{
NormalBlockParams blockParams;
NormalBlockISEInputs iseInputs;
blockParams.weightGridWidth = weightGridWidth;
blockParams.weightGridHeight = weightGridHeight;
blockParams.isDualPlane = isDualPlane != 0;
blockParams.weightISEParams = s_weightISEParamsCandidates[iseParamsNdx];
blockParams.ccs = 0;
blockParams.numPartitions = 1;
blockParams.colorEndpointModes[0] = 0;
if (isValidBlockParams(blockParams, blockSize.x(), blockSize.y()))
generateNormalBlock(blockParams, blockSize.x(), blockSize.y(),
generateDefaultISEInputs(blockParams))
.pushBytesToVector(dst);
}
break;
}
case BLOCK_TEST_TYPE_WEIGHT_ISE:
// For each weight ISE param set, generate blocks that cover:
// - each single value of the ISE's range, at each position inside an ISE block
// - for trit and quint ISEs, each single T or Q value of an ISE block
{
for (int iseParamsNdx = 0; iseParamsNdx < DE_LENGTH_OF_ARRAY(s_weightISEParamsCandidates); iseParamsNdx++)
{
const ISEParams &iseParams = s_weightISEParamsCandidates[iseParamsNdx];
NormalBlockParams blockParams;
blockParams.weightGridWidth = 4;
blockParams.weightGridHeight = 4;
blockParams.weightISEParams = iseParams;
blockParams.numPartitions = 1;
blockParams.isDualPlane =
blockParams.weightGridWidth * blockParams.weightGridHeight < 24 ? true : false;
blockParams.ccs = 0;
blockParams.colorEndpointModes[0] = 0;
while (!isValidBlockParams(blockParams, blockSize.x(), blockSize.y()))
{
blockParams.weightGridWidth--;
blockParams.weightGridHeight--;
}
const int numValuesInISEBlock = iseParams.mode == ISEMODE_TRIT ? 5 :
iseParams.mode == ISEMODE_QUINT ? 3 :
1;
const int numWeights = computeNumWeights(blockParams);
{
const int numWeightValues = (int)computeISERangeMax(iseParams) + 1;
const int numBlocks = deDivRoundUp32(numWeightValues, numWeights);
NormalBlockISEInputs iseInputs = generateDefaultISEInputs(blockParams);
iseInputs.weight.isGivenInBlockForm = false;
for (int offset = 0; offset < numValuesInISEBlock; offset++)
for (int blockNdx = 0; blockNdx < numBlocks; blockNdx++)
{
for (int weightNdx = 0; weightNdx < numWeights; weightNdx++)
iseInputs.weight.value.plain[weightNdx] =
(blockNdx * numWeights + weightNdx + offset) % numWeightValues;
generateNormalBlock(blockParams, blockSize.x(), blockSize.y(), iseInputs)
.pushBytesToVector(dst);
}
}
if (iseParams.mode == ISEMODE_TRIT || iseParams.mode == ISEMODE_QUINT)
{
NormalBlockISEInputs iseInputs = generateDefaultISEInputs(blockParams);
iseInputs.weight.isGivenInBlockForm = true;
const int numTQValues = 1 << (iseParams.mode == ISEMODE_TRIT ? 8 : 7);
const int numISEBlocksPerBlock = deDivRoundUp32(numWeights, numValuesInISEBlock);
const int numBlocks = deDivRoundUp32(numTQValues, numISEBlocksPerBlock);
for (int offset = 0; offset < numValuesInISEBlock; offset++)
for (int blockNdx = 0; blockNdx < numBlocks; blockNdx++)
{
for (int iseBlockNdx = 0; iseBlockNdx < numISEBlocksPerBlock; iseBlockNdx++)
{
for (int i = 0; i < numValuesInISEBlock; i++)
iseInputs.weight.value.block[iseBlockNdx].bitValues[i] = 0;
iseInputs.weight.value.block[iseBlockNdx].tOrQValue =
(blockNdx * numISEBlocksPerBlock + iseBlockNdx + offset) % numTQValues;
}
generateNormalBlock(blockParams, blockSize.x(), blockSize.y(), iseInputs)
.pushBytesToVector(dst);
}
}
}
break;
}
case BLOCK_TEST_TYPE_CEMS:
// For each plane count & partition count combination, generate all color endpoint mode combinations.
{
for (int isDualPlane = 0; isDualPlane <= 1; isDualPlane++)
for (int numPartitions = 1; numPartitions <= (isDualPlane != 0 ? 3 : 4); numPartitions++)
{
// Multi-partition, single-CEM mode.
if (numPartitions > 1)
{
for (uint32_t singleCem = 0; singleCem < 16; singleCem++)
{
NormalBlockParams blockParams;
blockParams.weightGridWidth = 4;
blockParams.weightGridHeight = 4;
blockParams.isDualPlane = isDualPlane != 0;
blockParams.ccs = 0;
blockParams.numPartitions = numPartitions;
blockParams.isMultiPartSingleCemMode = true;
blockParams.colorEndpointModes[0] = singleCem;
blockParams.partitionSeed = 634;
for (int iseParamsNdx = 0; iseParamsNdx < DE_LENGTH_OF_ARRAY(s_weightISEParamsCandidates);
iseParamsNdx++)
{
blockParams.weightISEParams = s_weightISEParamsCandidates[iseParamsNdx];
if (isValidBlockParams(blockParams, blockSize.x(), blockSize.y()))
{
generateNormalBlock(blockParams, blockSize.x(), blockSize.y(),
generateDefaultISEInputs(blockParams))
.pushBytesToVector(dst);
break;
}
}
}
}
// Separate-CEM mode.
for (uint32_t cem0 = 0; cem0 < 16; cem0++)
for (uint32_t cem1 = 0; cem1 < (numPartitions >= 2 ? 16u : 1u); cem1++)
for (uint32_t cem2 = 0; cem2 < (numPartitions >= 3 ? 16u : 1u); cem2++)
for (uint32_t cem3 = 0; cem3 < (numPartitions >= 4 ? 16u : 1u); cem3++)
{
NormalBlockParams blockParams;
blockParams.weightGridWidth = 4;
blockParams.weightGridHeight = 4;
blockParams.isDualPlane = isDualPlane != 0;
blockParams.ccs = 0;
blockParams.numPartitions = numPartitions;
blockParams.isMultiPartSingleCemMode = false;
blockParams.colorEndpointModes[0] = cem0;
blockParams.colorEndpointModes[1] = cem1;
blockParams.colorEndpointModes[2] = cem2;
blockParams.colorEndpointModes[3] = cem3;
blockParams.partitionSeed = 634;
{
const uint32_t minCem =
*std::min_element(&blockParams.colorEndpointModes[0],
&blockParams.colorEndpointModes[numPartitions]);
const uint32_t maxCem =
*std::max_element(&blockParams.colorEndpointModes[0],
&blockParams.colorEndpointModes[numPartitions]);
const uint32_t minCemClass = minCem / 4;
const uint32_t maxCemClass = maxCem / 4;
if (maxCemClass - minCemClass > 1)
continue;
}
for (int iseParamsNdx = 0;
iseParamsNdx < DE_LENGTH_OF_ARRAY(s_weightISEParamsCandidates); iseParamsNdx++)
{
blockParams.weightISEParams = s_weightISEParamsCandidates[iseParamsNdx];
if (isValidBlockParams(blockParams, blockSize.x(), blockSize.y()))
{
generateNormalBlock(blockParams, blockSize.x(), blockSize.y(),
generateDefaultISEInputs(blockParams))
.pushBytesToVector(dst);
break;
}
}
}
}
break;
}
case BLOCK_TEST_TYPE_PARTITION_SEED:
// Test all partition seeds ("partition pattern indices").
{
for (int numPartitions = 2; numPartitions <= 4; numPartitions++)
for (uint32_t partitionSeed = 0; partitionSeed < 1 << 10; partitionSeed++)
{
NormalBlockParams blockParams;
blockParams.weightGridWidth = 4;
blockParams.weightGridHeight = 4;
blockParams.weightISEParams = ISEParams(ISEMODE_PLAIN_BIT, 2);
blockParams.isDualPlane = false;
blockParams.numPartitions = numPartitions;
blockParams.isMultiPartSingleCemMode = true;
blockParams.colorEndpointModes[0] = 0;
blockParams.partitionSeed = partitionSeed;
generateNormalBlock(blockParams, blockSize.x(), blockSize.y(),
generateDefaultISEInputs(blockParams))
.pushBytesToVector(dst);
}
break;
}
// \note Fall-through.
case BLOCK_TEST_TYPE_ENDPOINT_VALUE_LDR:
case BLOCK_TEST_TYPE_ENDPOINT_VALUE_HDR_NO_15:
case BLOCK_TEST_TYPE_ENDPOINT_VALUE_HDR_15:
// For each endpoint mode, for each pair of components in the endpoint value, test 10x10 combinations of values for that pair.
// \note Separate modes for HDR and mode 15 due to different color scales and biases.
{
for (uint32_t cem = 0; cem < 16; cem++)
{
const bool isHDRCem = cem == 2 || cem == 3 || cem == 7 || cem == 11 || cem == 14 || cem == 15;
if ((testType == BLOCK_TEST_TYPE_ENDPOINT_VALUE_LDR && isHDRCem) ||
(testType == BLOCK_TEST_TYPE_ENDPOINT_VALUE_HDR_NO_15 && (!isHDRCem || cem == 15)) ||
(testType == BLOCK_TEST_TYPE_ENDPOINT_VALUE_HDR_15 && cem != 15))
continue;
NormalBlockParams blockParams;
blockParams.weightGridWidth = 3;
blockParams.weightGridHeight = 4;
blockParams.weightISEParams = ISEParams(ISEMODE_PLAIN_BIT, 2);
blockParams.isDualPlane = false;
blockParams.numPartitions = 1;
blockParams.colorEndpointModes[0] = cem;
{
const int numBitsForEndpoints = computeNumBitsForColorEndpoints(blockParams);
const int numEndpointParts = computeNumColorEndpointValues(cem);
const ISEParams endpointISE = computeMaximumRangeISEParams(numBitsForEndpoints, numEndpointParts);
const int endpointISERangeMax = computeISERangeMax(endpointISE);
for (int endpointPartNdx0 = 0; endpointPartNdx0 < numEndpointParts; endpointPartNdx0++)
for (int endpointPartNdx1 = endpointPartNdx0 + 1; endpointPartNdx1 < numEndpointParts;
endpointPartNdx1++)
{
NormalBlockISEInputs iseInputs = generateDefaultISEInputs(blockParams);
const int numEndpointValues = de::min(10, endpointISERangeMax + 1);
for (int endpointValueNdx0 = 0; endpointValueNdx0 < numEndpointValues; endpointValueNdx0++)
for (int endpointValueNdx1 = 0; endpointValueNdx1 < numEndpointValues;
endpointValueNdx1++)
{
const int endpointValue0 =
endpointValueNdx0 * endpointISERangeMax / (numEndpointValues - 1);
const int endpointValue1 =
endpointValueNdx1 * endpointISERangeMax / (numEndpointValues - 1);
iseInputs.endpoint.value.plain[endpointPartNdx0] = endpointValue0;
iseInputs.endpoint.value.plain[endpointPartNdx1] = endpointValue1;
generateNormalBlock(blockParams, blockSize.x(), blockSize.y(), iseInputs)
.pushBytesToVector(dst);
}
}
}
}
break;
}
case BLOCK_TEST_TYPE_ENDPOINT_ISE:
// Similar to BLOCK_TEST_TYPE_WEIGHT_ISE, see above.
{
static const uint32_t endpointRangeMaximums[] = {5, 9, 11, 19, 23, 39, 47, 79, 95, 159, 191};
for (int endpointRangeNdx = 0; endpointRangeNdx < DE_LENGTH_OF_ARRAY(endpointRangeMaximums);
endpointRangeNdx++)
{
bool validCaseGenerated = false;
for (int numPartitions = 1; !validCaseGenerated && numPartitions <= 4; numPartitions++)
for (int isDual = 0; !validCaseGenerated && isDual <= 1; isDual++)
for (int weightISEParamsNdx = 0;
!validCaseGenerated &&
weightISEParamsNdx < DE_LENGTH_OF_ARRAY(s_weightISEParamsCandidates);
weightISEParamsNdx++)
for (int weightGridWidth = 2; !validCaseGenerated && weightGridWidth <= 12;
weightGridWidth++)
for (int weightGridHeight = 2; !validCaseGenerated && weightGridHeight <= 12;
weightGridHeight++)
{
NormalBlockParams blockParams;
blockParams.weightGridWidth = weightGridWidth;
blockParams.weightGridHeight = weightGridHeight;
blockParams.weightISEParams = s_weightISEParamsCandidates[weightISEParamsNdx];
blockParams.isDualPlane = isDual != 0;
blockParams.ccs = 0;
blockParams.numPartitions = numPartitions;
blockParams.isMultiPartSingleCemMode = true;
blockParams.colorEndpointModes[0] = 12;
blockParams.partitionSeed = 634;
if (isValidBlockParams(blockParams, blockSize.x(), blockSize.y()))
{
const ISEParams endpointISEParams = computeMaximumRangeISEParams(
computeNumBitsForColorEndpoints(blockParams),
computeNumColorEndpointValues(&blockParams.colorEndpointModes[0],
numPartitions, true));
if (computeISERangeMax(endpointISEParams) ==
endpointRangeMaximums[endpointRangeNdx])
{
validCaseGenerated = true;
const int numColorEndpoints = computeNumColorEndpointValues(
&blockParams.colorEndpointModes[0], numPartitions,
blockParams.isMultiPartSingleCemMode);
const int numValuesInISEBlock = endpointISEParams.mode == ISEMODE_TRIT ? 5 :
endpointISEParams.mode == ISEMODE_QUINT ?
3 :
1;
{
const int numColorEndpointValues =
(int)computeISERangeMax(endpointISEParams) + 1;
const int numBlocks =
deDivRoundUp32(numColorEndpointValues, numColorEndpoints);
NormalBlockISEInputs iseInputs = generateDefaultISEInputs(blockParams);
iseInputs.endpoint.isGivenInBlockForm = false;
for (int offset = 0; offset < numValuesInISEBlock; offset++)
for (int blockNdx = 0; blockNdx < numBlocks; blockNdx++)
{
for (int endpointNdx = 0; endpointNdx < numColorEndpoints;
endpointNdx++)
iseInputs.endpoint.value.plain[endpointNdx] =
(blockNdx * numColorEndpoints + endpointNdx + offset) %
numColorEndpointValues;
generateNormalBlock(blockParams, blockSize.x(), blockSize.y(),
iseInputs)
.pushBytesToVector(dst);
}
}
if (endpointISEParams.mode == ISEMODE_TRIT ||
endpointISEParams.mode == ISEMODE_QUINT)
{
NormalBlockISEInputs iseInputs = generateDefaultISEInputs(blockParams);
iseInputs.endpoint.isGivenInBlockForm = true;
const int numTQValues =
1 << (endpointISEParams.mode == ISEMODE_TRIT ? 8 : 7);
const int numISEBlocksPerBlock =
deDivRoundUp32(numColorEndpoints, numValuesInISEBlock);
const int numBlocks = deDivRoundUp32(numTQValues, numISEBlocksPerBlock);
for (int offset = 0; offset < numValuesInISEBlock; offset++)
for (int blockNdx = 0; blockNdx < numBlocks; blockNdx++)
{
for (int iseBlockNdx = 0; iseBlockNdx < numISEBlocksPerBlock;
iseBlockNdx++)
{
for (int i = 0; i < numValuesInISEBlock; i++)
iseInputs.endpoint.value.block[iseBlockNdx]
.bitValues[i] = 0;
iseInputs.endpoint.value.block[iseBlockNdx].tOrQValue =
(blockNdx * numISEBlocksPerBlock + iseBlockNdx +
offset) %
numTQValues;
}
generateNormalBlock(blockParams, blockSize.x(), blockSize.y(),
iseInputs)
.pushBytesToVector(dst);
}
}
}
}
}
DE_ASSERT(validCaseGenerated);
}
break;
}
case BLOCK_TEST_TYPE_CCS:
// For all partition counts, test all values of the CCS (color component selector).
{
for (int numPartitions = 1; numPartitions <= 3; numPartitions++)
for (uint32_t ccs = 0; ccs < 4; ccs++)
{
NormalBlockParams blockParams;
blockParams.weightGridWidth = 3;
blockParams.weightGridHeight = 3;
blockParams.weightISEParams = ISEParams(ISEMODE_PLAIN_BIT, 2);
blockParams.isDualPlane = true;
blockParams.ccs = ccs;
blockParams.numPartitions = numPartitions;
blockParams.isMultiPartSingleCemMode = true;
blockParams.colorEndpointModes[0] = 8;
blockParams.partitionSeed = 634;
generateNormalBlock(blockParams, blockSize.x(), blockSize.y(),
generateDefaultISEInputs(blockParams))
.pushBytesToVector(dst);
}
break;
}
case BLOCK_TEST_TYPE_RANDOM:
// Generate a number of random (including invalid) blocks.
{
const int numBlocks = 16384;
const uint32_t seed = 1;
dst.resize(numBlocks * BLOCK_SIZE_BYTES);
generateRandomBlocks(&dst[0], numBlocks, format, seed);
break;
}
default:
DE_ASSERT(false);
}
}
void generateRandomBlocks(uint8_t *dst, size_t numBlocks, CompressedTexFormat format, uint32_t seed)
{
const IVec3 blockSize = getBlockPixelSize(format);
de::Random rnd(seed);
size_t numBlocksGenerated = 0;
DE_ASSERT(isAstcFormat(format));
DE_ASSERT(blockSize.z() == 1);
for (numBlocksGenerated = 0; numBlocksGenerated < numBlocks; numBlocksGenerated++)
{
uint8_t *const curBlockPtr = dst + numBlocksGenerated * BLOCK_SIZE_BYTES;
generateRandomBlock(curBlockPtr, blockSize, rnd);
}
}
void generateRandomValidBlocks(uint8_t *dst, size_t numBlocks, CompressedTexFormat format,
TexDecompressionParams::AstcMode mode, uint32_t seed)
{
const IVec3 blockSize = getBlockPixelSize(format);
de::Random rnd(seed);
size_t numBlocksGenerated = 0;
DE_ASSERT(isAstcFormat(format));
DE_ASSERT(blockSize.z() == 1);
for (numBlocksGenerated = 0; numBlocksGenerated < numBlocks; numBlocksGenerated++)
{
uint8_t *const curBlockPtr = dst + numBlocksGenerated * BLOCK_SIZE_BYTES;
do
{
generateRandomBlock(curBlockPtr, blockSize, rnd);
} while (!isValidBlock(curBlockPtr, format, mode));
}
}
// Generate a number of trivial blocks to fill unneeded space in a texture.
void generateDefaultVoidExtentBlocks(uint8_t *dst, size_t numBlocks)
{
AssignBlock128 block = generateVoidExtentBlock(VoidExtentParams(false, 0, 0, 0, 0));
for (size_t ndx = 0; ndx < numBlocks; ndx++)
block.assignToMemory(&dst[ndx * BLOCK_SIZE_BYTES]);
}
void generateDefaultNormalBlocks(uint8_t *dst, size_t numBlocks, int blockWidth, int blockHeight)
{
NormalBlockParams blockParams;
blockParams.weightGridWidth = 3;
blockParams.weightGridHeight = 3;
blockParams.weightISEParams = ISEParams(ISEMODE_PLAIN_BIT, 5);
blockParams.isDualPlane = false;
blockParams.numPartitions = 1;
blockParams.colorEndpointModes[0] = 8;
NormalBlockISEInputs iseInputs = generateDefaultISEInputs(blockParams);
iseInputs.weight.isGivenInBlockForm = false;
const int numWeights = computeNumWeights(blockParams);
const int weightRangeMax = computeISERangeMax(blockParams.weightISEParams);
for (size_t blockNdx = 0; blockNdx < numBlocks; blockNdx++)
{
for (int weightNdx = 0; weightNdx < numWeights; weightNdx++)
iseInputs.weight.value.plain[weightNdx] =
(uint32_t)((blockNdx * numWeights + weightNdx) * weightRangeMax / (numBlocks * numWeights - 1));
generateNormalBlock(blockParams, blockWidth, blockHeight, iseInputs)
.assignToMemory(dst + blockNdx * BLOCK_SIZE_BYTES);
}
}
bool isValidBlock(const uint8_t *data, CompressedTexFormat format, TexDecompressionParams::AstcMode mode)
{
const tcu::IVec3 blockPixelSize = getBlockPixelSize(format);
const bool isSRGB = isAstcSRGBFormat(format);
const bool isLDR = isSRGB || mode == TexDecompressionParams::ASTCMODE_LDR;
// sRGB is not supported in HDR mode
DE_ASSERT(!(mode == TexDecompressionParams::ASTCMODE_HDR && isSRGB));
union
{
uint8_t sRGB[MAX_BLOCK_WIDTH * MAX_BLOCK_HEIGHT * 4];
float linear[MAX_BLOCK_WIDTH * MAX_BLOCK_HEIGHT * 4];
} tmpBuffer;
const Block128 blockData(data);
const DecompressResult result =
decompressBlock((isSRGB ? (void *)&tmpBuffer.sRGB[0] : (void *)&tmpBuffer.linear[0]), blockData,
blockPixelSize.x(), blockPixelSize.y(), isSRGB, isLDR);
return result == DECOMPRESS_RESULT_VALID_BLOCK;
}
void decompress(const PixelBufferAccess &dst, const uint8_t *data, CompressedTexFormat format,
TexDecompressionParams::AstcMode mode)
{
const bool isSRGBFormat = isAstcSRGBFormat(format);
#if defined(DE_DEBUG)
const tcu::IVec3 blockPixelSize = getBlockPixelSize(format);
DE_ASSERT(dst.getWidth() == blockPixelSize.x() && dst.getHeight() == blockPixelSize.y() &&
dst.getDepth() == blockPixelSize.z());
DE_ASSERT(mode == TexDecompressionParams::ASTCMODE_LDR || mode == TexDecompressionParams::ASTCMODE_HDR);
#endif
// sRGB is not supported in HDR mode
DE_ASSERT(!(mode == TexDecompressionParams::ASTCMODE_HDR && isSRGBFormat));
decompress(dst, data, isSRGBFormat, isSRGBFormat || mode == TexDecompressionParams::ASTCMODE_LDR);
}
const char *getBlockTestTypeName(BlockTestType testType)
{
switch (testType)
{
case BLOCK_TEST_TYPE_VOID_EXTENT_LDR:
return "void_extent_ldr";
case BLOCK_TEST_TYPE_VOID_EXTENT_HDR:
return "void_extent_hdr";
case BLOCK_TEST_TYPE_WEIGHT_GRID:
return "weight_grid";
case BLOCK_TEST_TYPE_WEIGHT_ISE:
return "weight_ise";
case BLOCK_TEST_TYPE_CEMS:
return "color_endpoint_modes";
case BLOCK_TEST_TYPE_PARTITION_SEED:
return "partition_pattern_index";
case BLOCK_TEST_TYPE_ENDPOINT_VALUE_LDR:
return "endpoint_value_ldr";
case BLOCK_TEST_TYPE_ENDPOINT_VALUE_HDR_NO_15:
return "endpoint_value_hdr_cem_not_15";
case BLOCK_TEST_TYPE_ENDPOINT_VALUE_HDR_15:
return "endpoint_value_hdr_cem_15";
case BLOCK_TEST_TYPE_ENDPOINT_ISE:
return "endpoint_ise";
case BLOCK_TEST_TYPE_CCS:
return "color_component_selector";
case BLOCK_TEST_TYPE_RANDOM:
return "random";
default:
DE_ASSERT(false);
return DE_NULL;
}
}
const char *getBlockTestTypeDescription(BlockTestType testType)
{
switch (testType)
{
case BLOCK_TEST_TYPE_VOID_EXTENT_LDR:
return "Test void extent block, LDR mode";
case BLOCK_TEST_TYPE_VOID_EXTENT_HDR:
return "Test void extent block, HDR mode";
case BLOCK_TEST_TYPE_WEIGHT_GRID:
return "Test combinations of plane count, weight integer sequence encoding parameters, and weight grid size";
case BLOCK_TEST_TYPE_WEIGHT_ISE:
return "Test different integer sequence encoding block values for weight grid";
case BLOCK_TEST_TYPE_CEMS:
return "Test different color endpoint mode combinations, combined with different plane and partition counts";
case BLOCK_TEST_TYPE_PARTITION_SEED:
return "Test different partition pattern indices";
case BLOCK_TEST_TYPE_ENDPOINT_VALUE_LDR:
return "Test various combinations of each pair of color endpoint values, for each LDR color endpoint mode";
case BLOCK_TEST_TYPE_ENDPOINT_VALUE_HDR_NO_15:
return "Test various combinations of each pair of color endpoint values, for each HDR color endpoint mode "
"other than mode 15";
case BLOCK_TEST_TYPE_ENDPOINT_VALUE_HDR_15:
return "Test various combinations of each pair of color endpoint values, HDR color endpoint mode 15";
case BLOCK_TEST_TYPE_ENDPOINT_ISE:
return "Test different integer sequence encoding block values for color endpoints";
case BLOCK_TEST_TYPE_CCS:
return "Test color component selector, for different partition counts";
case BLOCK_TEST_TYPE_RANDOM:
return "Random block test";
default:
DE_ASSERT(false);
return DE_NULL;
}
}
bool isBlockTestTypeHDROnly(BlockTestType testType)
{
return testType == BLOCK_TEST_TYPE_VOID_EXTENT_HDR || testType == BLOCK_TEST_TYPE_ENDPOINT_VALUE_HDR_NO_15 ||
testType == BLOCK_TEST_TYPE_ENDPOINT_VALUE_HDR_15;
}
Vec4 getBlockTestTypeColorScale(BlockTestType testType)
{
switch (testType)
{
case tcu::astc::BLOCK_TEST_TYPE_VOID_EXTENT_HDR:
return Vec4(0.5f / 65504.0f);
case tcu::astc::BLOCK_TEST_TYPE_ENDPOINT_VALUE_HDR_NO_15:
return Vec4(1.0f / 65504.0f, 1.0f / 65504.0f, 1.0f / 65504.0f, 1.0f);
case tcu::astc::BLOCK_TEST_TYPE_ENDPOINT_VALUE_HDR_15:
return Vec4(1.0f / 65504.0f);
default:
return Vec4(1.0f);
}
}
Vec4 getBlockTestTypeColorBias(BlockTestType testType)
{
switch (testType)
{
case tcu::astc::BLOCK_TEST_TYPE_VOID_EXTENT_HDR:
return Vec4(0.5f);
default:
return Vec4(0.0f);
}
}
} // namespace astc
} // namespace tcu