4 files changed, 137 insertions, 1738 deletions

diff --git a/src/video_core/textures/astc.cpp b/src/video_core/textures/astc.cpp
deleted file mode 100644
index 3625b666c..000000000
--- a/src/video_core/textures/astc.cpp
+++ /dev/null
@@ -1,1710 +0,0 @@
-// Copyright 2016 The University of North Carolina at Chapel Hill
-//
-// 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.
-//
-// Please send all BUG REPORTS to <pavel@cs.unc.edu>.
-// <http://gamma.cs.unc.edu/FasTC/>
-
-#include <algorithm>
-#include <cassert>
-#include <cstring>
-#include <span>
-#include <vector>
-
-#include <boost/container/static_vector.hpp>
-
-#include "common/common_types.h"
-
-#include "video_core/textures/astc.h"
-
-namespace {
-
-/// Count the number of bits set in a number.
-constexpr u32 Popcnt(u32 n) {
-    u32 c = 0;
-    for (; n; c++) {
-        n &= n - 1;
-    }
-    return c;
-}
-
-} // Anonymous namespace
-
-class InputBitStream {
-public:
-    constexpr explicit InputBitStream(std::span<const u8> data, size_t start_offset = 0)
-        : cur_byte{data.data()}, total_bits{data.size()}, next_bit{start_offset % 8} {}
-
-    constexpr size_t GetBitsRead() const {
-        return bits_read;
-    }
-
-    constexpr bool ReadBit() {
-        if (bits_read >= total_bits * 8) {
-            return 0;
-        }
-        const bool bit = ((*cur_byte >> next_bit) & 1) != 0;
-        ++next_bit;
-        while (next_bit >= 8) {
-            next_bit -= 8;
-            ++cur_byte;
-        }
-        ++bits_read;
-        return bit;
-    }
-
-    constexpr u32 ReadBits(std::size_t nBits) {
-        u32 ret = 0;
-        for (std::size_t i = 0; i < nBits; ++i) {
-            ret |= (ReadBit() & 1) << i;
-        }
-        return ret;
-    }
-
-    template <std::size_t nBits>
-    constexpr u32 ReadBits() {
-        u32 ret = 0;
-        for (std::size_t i = 0; i < nBits; ++i) {
-            ret |= (ReadBit() & 1) << i;
-        }
-        return ret;
-    }
-
-private:
-    const u8* cur_byte;
-    size_t total_bits = 0;
-    size_t next_bit = 0;
-    size_t bits_read = 0;
-};
-
-class OutputBitStream {
-public:
-    constexpr explicit OutputBitStream(u8* ptr, std::size_t bits = 0, std::size_t start_offset = 0)
-        : cur_byte{ptr}, num_bits{bits}, next_bit{start_offset % 8} {}
-
-    constexpr std::size_t GetBitsWritten() const {
-        return bits_written;
-    }
-
-    constexpr void WriteBitsR(u32 val, u32 nBits) {
-        for (u32 i = 0; i < nBits; i++) {
-            WriteBit((val >> (nBits - i - 1)) & 1);
-        }
-    }
-
-    constexpr void WriteBits(u32 val, u32 nBits) {
-        for (u32 i = 0; i < nBits; i++) {
-            WriteBit((val >> i) & 1);
-        }
-    }
-
-private:
-    constexpr void WriteBit(bool b) {
-        if (bits_written >= num_bits) {
-            return;
-        }
-
-        const u32 mask = 1 << next_bit++;
-
-        // clear the bit
-        *cur_byte &= static_cast<u8>(~mask);
-
-        // Write the bit, if necessary
-        if (b)
-            *cur_byte |= static_cast<u8>(mask);
-
-        // Next byte?
-        if (next_bit >= 8) {
-            cur_byte += 1;
-            next_bit = 0;
-        }
-    }
-
-    u8* cur_byte;
-    std::size_t num_bits;
-    std::size_t bits_written = 0;
-    std::size_t next_bit = 0;
-};
-
-template <typename IntType>
-class Bits {
-public:
-    explicit Bits(const IntType& v) : m_Bits(v) {}
-
-    Bits(const Bits&) = delete;
-    Bits& operator=(const Bits&) = delete;
-
-    u8 operator[](u32 bitPos) const {
-        return static_cast<u8>((m_Bits >> bitPos) & 1);
-    }
-
-    IntType operator()(u32 start, u32 end) const {
-        if (start == end) {
-            return (*this)[start];
-        } else if (start > end) {
-            u32 t = start;
-            start = end;
-            end = t;
-        }
-
-        u64 mask = (1 << (end - start + 1)) - 1;
-        return (m_Bits >> start) & static_cast<IntType>(mask);
-    }
-
-private:
-    const IntType& m_Bits;
-};
-
-enum class IntegerEncoding { JustBits, Qus32, Trit };
-
-struct IntegerEncodedValue {
-    constexpr IntegerEncodedValue() = default;
-
-    constexpr IntegerEncodedValue(IntegerEncoding encoding_, u32 num_bits_)
-        : encoding{encoding_}, num_bits{num_bits_} {}
-
-    constexpr bool MatchesEncoding(const IntegerEncodedValue& other) const {
-        return encoding == other.encoding && num_bits == other.num_bits;
-    }
-
-    // Returns the number of bits required to encode nVals values.
-    u32 GetBitLength(u32 nVals) const {
-        u32 totalBits = num_bits * nVals;
-        if (encoding == IntegerEncoding::Trit) {
-            totalBits += (nVals * 8 + 4) / 5;
-        } else if (encoding == IntegerEncoding::Qus32) {
-            totalBits += (nVals * 7 + 2) / 3;
-        }
-        return totalBits;
-    }
-
-    IntegerEncoding encoding{};
-    u32 num_bits = 0;
-    u32 bit_value = 0;
-    union {
-        u32 qus32_value = 0;
-        u32 trit_value;
-    };
-};
-using IntegerEncodedVector = boost::container::static_vector<
-    IntegerEncodedValue, 256,
-    boost::container::static_vector_options<
-        boost::container::inplace_alignment<alignof(IntegerEncodedValue)>,
-        boost::container::throw_on_overflow<false>>::type>;
-
-static void DecodeTritBlock(InputBitStream& bits, IntegerEncodedVector& result, u32 nBitsPerValue) {
-    // Implement the algorithm in section C.2.12
-    std::array<u32, 5> m;
-    std::array<u32, 5> t;
-    u32 T;
-
-    // Read the trit encoded block according to
-    // table C.2.14
-    m[0] = bits.ReadBits(nBitsPerValue);
-    T = bits.ReadBits<2>();
-    m[1] = bits.ReadBits(nBitsPerValue);
-    T |= bits.ReadBits<2>() << 2;
-    m[2] = bits.ReadBits(nBitsPerValue);
-    T |= bits.ReadBit() << 4;
-    m[3] = bits.ReadBits(nBitsPerValue);
-    T |= bits.ReadBits<2>() << 5;
-    m[4] = bits.ReadBits(nBitsPerValue);
-    T |= bits.ReadBit() << 7;
-
-    u32 C = 0;
-
-    Bits<u32> Tb(T);
-    if (Tb(2, 4) == 7) {
-        C = (Tb(5, 7) << 2) | Tb(0, 1);
-        t[4] = t[3] = 2;
-    } else {
-        C = Tb(0, 4);
-        if (Tb(5, 6) == 3) {
-            t[4] = 2;
-            t[3] = Tb[7];
-        } else {
-            t[4] = Tb[7];
-            t[3] = Tb(5, 6);
-        }
-    }
-
-    Bits<u32> Cb(C);
-    if (Cb(0, 1) == 3) {
-        t[2] = 2;
-        t[1] = Cb[4];
-        t[0] = (Cb[3] << 1) | (Cb[2] & ~Cb[3]);
-    } else if (Cb(2, 3) == 3) {
-        t[2] = 2;
-        t[1] = 2;
-        t[0] = Cb(0, 1);
-    } else {
-        t[2] = Cb[4];
-        t[1] = Cb(2, 3);
-        t[0] = (Cb[1] << 1) | (Cb[0] & ~Cb[1]);
-    }
-
-    for (std::size_t i = 0; i < 5; ++i) {
-        IntegerEncodedValue& val = result.emplace_back(IntegerEncoding::Trit, nBitsPerValue);
-        val.bit_value = m[i];
-        val.trit_value = t[i];
-    }
-}
-
-static void DecodeQus32Block(InputBitStream& bits, IntegerEncodedVector& result,
-                             u32 nBitsPerValue) {
-    // Implement the algorithm in section C.2.12
-    u32 m[3];
-    u32 q[3];
-    u32 Q;
-
-    // Read the trit encoded block according to
-    // table C.2.15
-    m[0] = bits.ReadBits(nBitsPerValue);
-    Q = bits.ReadBits<3>();
-    m[1] = bits.ReadBits(nBitsPerValue);
-    Q |= bits.ReadBits<2>() << 3;
-    m[2] = bits.ReadBits(nBitsPerValue);
-    Q |= bits.ReadBits<2>() << 5;
-
-    Bits<u32> Qb(Q);
-    if (Qb(1, 2) == 3 && Qb(5, 6) == 0) {
-        q[0] = q[1] = 4;
-        q[2] = (Qb[0] << 2) | ((Qb[4] & ~Qb[0]) << 1) | (Qb[3] & ~Qb[0]);
-    } else {
-        u32 C = 0;
-        if (Qb(1, 2) == 3) {
-            q[2] = 4;
-            C = (Qb(3, 4) << 3) | ((~Qb(5, 6) & 3) << 1) | Qb[0];
-        } else {
-            q[2] = Qb(5, 6);
-            C = Qb(0, 4);
-        }
-
-        Bits<u32> Cb(C);
-        if (Cb(0, 2) == 5) {
-            q[1] = 4;
-            q[0] = Cb(3, 4);
-        } else {
-            q[1] = Cb(3, 4);
-            q[0] = Cb(0, 2);
-        }
-    }
-
-    for (std::size_t i = 0; i < 3; ++i) {
-        IntegerEncodedValue& val = result.emplace_back(IntegerEncoding::Qus32, nBitsPerValue);
-        val.bit_value = m[i];
-        val.qus32_value = q[i];
-    }
-}
-
-// Returns a new instance of this struct that corresponds to the
-// can take no more than maxval values
-static constexpr IntegerEncodedValue CreateEncoding(u32 maxVal) {
-    while (maxVal > 0) {
-        u32 check = maxVal + 1;
-
-        // Is maxVal a power of two?
-        if (!(check & (check - 1))) {
-            return IntegerEncodedValue(IntegerEncoding::JustBits, Popcnt(maxVal));
-        }
-
-        // Is maxVal of the type 3*2^n - 1?
-        if ((check % 3 == 0) && !((check / 3) & ((check / 3) - 1))) {
-            return IntegerEncodedValue(IntegerEncoding::Trit, Popcnt(check / 3 - 1));
-        }
-
-        // Is maxVal of the type 5*2^n - 1?
-        if ((check % 5 == 0) && !((check / 5) & ((check / 5) - 1))) {
-            return IntegerEncodedValue(IntegerEncoding::Qus32, Popcnt(check / 5 - 1));
-        }
-
-        // Apparently it can't be represented with a bounded integer sequence...
-        // just iterate.
-        maxVal--;
-    }
-    return IntegerEncodedValue(IntegerEncoding::JustBits, 0);
-}
-
-static constexpr std::array<IntegerEncodedValue, 256> MakeEncodedValues() {
-    std::array<IntegerEncodedValue, 256> encodings{};
-    for (std::size_t i = 0; i < encodings.size(); ++i) {
-        encodings[i] = CreateEncoding(static_cast<u32>(i));
-    }
-    return encodings;
-}
-
-static constexpr std::array EncodingsValues = MakeEncodedValues();
-
-// Fills result with the values that are encoded in the given
-// bitstream. We must know beforehand what the maximum possible
-// value is, and how many values we're decoding.
-static void DecodeIntegerSequence(IntegerEncodedVector& result, InputBitStream& bits, u32 maxRange,
-                                  u32 nValues) {
-    // Determine encoding parameters
-    IntegerEncodedValue val = EncodingsValues[maxRange];
-
-    // Start decoding
-    u32 nValsDecoded = 0;
-    while (nValsDecoded < nValues) {
-        switch (val.encoding) {
-        case IntegerEncoding::Qus32:
-            DecodeQus32Block(bits, result, val.num_bits);
-            nValsDecoded += 3;
-            break;
-
-        case IntegerEncoding::Trit:
-            DecodeTritBlock(bits, result, val.num_bits);
-            nValsDecoded += 5;
-            break;
-
-        case IntegerEncoding::JustBits:
-            val.bit_value = bits.ReadBits(val.num_bits);
-            result.push_back(val);
-            nValsDecoded++;
-            break;
-        }
-    }
-}
-
-namespace ASTCC {
-
-struct TexelWeightParams {
-    u32 m_Width = 0;
-    u32 m_Height = 0;
-    bool m_bDualPlane = false;
-    u32 m_MaxWeight = 0;
-    bool m_bError = false;
-    bool m_bVoidExtentLDR = false;
-    bool m_bVoidExtentHDR = false;
-
-    u32 GetPackedBitSize() const {
-        // How many indices do we have?
-        u32 nIdxs = m_Height * m_Width;
-        if (m_bDualPlane) {
-            nIdxs *= 2;
-        }
-
-        return EncodingsValues[m_MaxWeight].GetBitLength(nIdxs);
-    }
-
-    u32 GetNumWeightValues() const {
-        u32 ret = m_Width * m_Height;
-        if (m_bDualPlane) {
-            ret *= 2;
-        }
-        return ret;
-    }
-};
-
-static TexelWeightParams DecodeBlockInfo(InputBitStream& strm) {
-    TexelWeightParams params;
-
-    // Read the entire block mode all at once
-    u16 modeBits = static_cast<u16>(strm.ReadBits<11>());
-
-    // Does this match the void extent block mode?
-    if ((modeBits & 0x01FF) == 0x1FC) {
-        if (modeBits & 0x200) {
-            params.m_bVoidExtentHDR = true;
-        } else {
-            params.m_bVoidExtentLDR = true;
-        }
-
-        // Next two bits must be one.
-        if (!(modeBits & 0x400) || !strm.ReadBit()) {
-            params.m_bError = true;
-        }
-
-        return params;
-    }
-
-    // First check if the last four bits are zero
-    if ((modeBits & 0xF) == 0) {
-        params.m_bError = true;
-        return params;
-    }
-
-    // If the last two bits are zero, then if bits
-    // [6-8] are all ones, this is also reserved.
-    if ((modeBits & 0x3) == 0 && (modeBits & 0x1C0) == 0x1C0) {
-        params.m_bError = true;
-        return params;
-    }
-
-    // Otherwise, there is no error... Figure out the layout
-    // of the block mode. Layout is determined by a number
-    // between 0 and 9 corresponding to table C.2.8 of the
-    // ASTC spec.
-    u32 layout = 0;
-
-    if ((modeBits & 0x1) || (modeBits & 0x2)) {
-        // layout is in [0-4]
-        if (modeBits & 0x8) {
-            // layout is in [2-4]
-            if (modeBits & 0x4) {
-                // layout is in [3-4]
-                if (modeBits & 0x100) {
-                    layout = 4;
-                } else {
-                    layout = 3;
-                }
-            } else {
-                layout = 2;
-            }
-        } else {
-            // layout is in [0-1]
-            if (modeBits & 0x4) {
-                layout = 1;
-            } else {
-                layout = 0;
-            }
-        }
-    } else {
-        // layout is in [5-9]
-        if (modeBits & 0x100) {
-            // layout is in [7-9]
-            if (modeBits & 0x80) {
-                // layout is in [7-8]
-                assert((modeBits & 0x40) == 0U);
-                if (modeBits & 0x20) {
-                    layout = 8;
-                } else {
-                    layout = 7;
-                }
-            } else {
-                layout = 9;
-            }
-        } else {
-            // layout is in [5-6]
-            if (modeBits & 0x80) {
-                layout = 6;
-            } else {
-                layout = 5;
-            }
-        }
-    }
-
-    assert(layout < 10);
-
-    // Determine R
-    u32 R = !!(modeBits & 0x10);
-    if (layout < 5) {
-        R |= (modeBits & 0x3) << 1;
-    } else {
-        R |= (modeBits & 0xC) >> 1;
-    }
-    assert(2 <= R && R <= 7);
-
-    // Determine width & height
-    switch (layout) {
-    case 0: {
-        u32 A = (modeBits >> 5) & 0x3;
-        u32 B = (modeBits >> 7) & 0x3;
-        params.m_Width = B + 4;
-        params.m_Height = A + 2;
-        break;
-    }
-
-    case 1: {
-        u32 A = (modeBits >> 5) & 0x3;
-        u32 B = (modeBits >> 7) & 0x3;
-        params.m_Width = B + 8;
-        params.m_Height = A + 2;
-        break;
-    }
-
-    case 2: {
-        u32 A = (modeBits >> 5) & 0x3;
-        u32 B = (modeBits >> 7) & 0x3;
-        params.m_Width = A + 2;
-        params.m_Height = B + 8;
-        break;
-    }
-
-    case 3: {
-        u32 A = (modeBits >> 5) & 0x3;
-        u32 B = (modeBits >> 7) & 0x1;
-        params.m_Width = A + 2;
-        params.m_Height = B + 6;
-        break;
-    }
-
-    case 4: {
-        u32 A = (modeBits >> 5) & 0x3;
-        u32 B = (modeBits >> 7) & 0x1;
-        params.m_Width = B + 2;
-        params.m_Height = A + 2;
-        break;
-    }
-
-    case 5: {
-        u32 A = (modeBits >> 5) & 0x3;
-        params.m_Width = 12;
-        params.m_Height = A + 2;
-        break;
-    }
-
-    case 6: {
-        u32 A = (modeBits >> 5) & 0x3;
-        params.m_Width = A + 2;
-        params.m_Height = 12;
-        break;
-    }
-
-    case 7: {
-        params.m_Width = 6;
-        params.m_Height = 10;
-        break;
-    }
-
-    case 8: {
-        params.m_Width = 10;
-        params.m_Height = 6;
-        break;
-    }
-
-    case 9: {
-        u32 A = (modeBits >> 5) & 0x3;
-        u32 B = (modeBits >> 9) & 0x3;
-        params.m_Width = A + 6;
-        params.m_Height = B + 6;
-        break;
-    }
-
-    default:
-        assert(false && "Don't know this layout...");
-        params.m_bError = true;
-        break;
-    }
-
-    // Determine whether or not we're using dual planes
-    // and/or high precision layouts.
-    bool D = (layout != 9) && (modeBits & 0x400);
-    bool H = (layout != 9) && (modeBits & 0x200);
-
-    if (H) {
-        const u32 maxWeights[6] = {9, 11, 15, 19, 23, 31};
-        params.m_MaxWeight = maxWeights[R - 2];
-    } else {
-        const u32 maxWeights[6] = {1, 2, 3, 4, 5, 7};
-        params.m_MaxWeight = maxWeights[R - 2];
-    }
-
-    params.m_bDualPlane = D;
-
-    return params;
-}
-
-static void FillVoidExtentLDR(InputBitStream& strm, std::span<u32> outBuf, u32 blockWidth,
-                              u32 blockHeight) {
-    // Don't actually care about the void extent, just read the bits...
-    for (s32 i = 0; i < 4; ++i) {
-        strm.ReadBits<13>();
-    }
-
-    // Decode the RGBA components and renormalize them to the range [0, 255]
-    u16 r = static_cast<u16>(strm.ReadBits<16>());
-    u16 g = static_cast<u16>(strm.ReadBits<16>());
-    u16 b = static_cast<u16>(strm.ReadBits<16>());
-    u16 a = static_cast<u16>(strm.ReadBits<16>());
-
-    u32 rgba = (r >> 8) | (g & 0xFF00) | (static_cast<u32>(b) & 0xFF00) << 8 |
-               (static_cast<u32>(a) & 0xFF00) << 16;
-
-    for (u32 j = 0; j < blockHeight; j++) {
-        for (u32 i = 0; i < blockWidth; i++) {
-            outBuf[j * blockWidth + i] = rgba;
-        }
-    }
-}
-
-static void FillError(std::span<u32> outBuf, u32 blockWidth, u32 blockHeight) {
-    for (u32 j = 0; j < blockHeight; j++) {
-        for (u32 i = 0; i < blockWidth; i++) {
-            outBuf[j * blockWidth + i] = 0xFFFF00FF;
-        }
-    }
-}
-
-// Replicates low numBits such that [(toBit - 1):(toBit - 1 - fromBit)]
-// is the same as [(numBits - 1):0] and repeats all the way down.
-template <typename IntType>
-static constexpr IntType Replicate(IntType val, u32 numBits, u32 toBit) {
-    if (numBits == 0) {
-        return 0;
-    }
-    if (toBit == 0) {
-        return 0;
-    }
-    const IntType v = val & static_cast<IntType>((1 << numBits) - 1);
-    IntType res = v;
-    u32 reslen = numBits;
-    while (reslen < toBit) {
-        u32 comp = 0;
-        if (numBits > toBit - reslen) {
-            u32 newshift = toBit - reslen;
-            comp = numBits - newshift;
-            numBits = newshift;
-        }
-        res = static_cast<IntType>(res << numBits);
-        res = static_cast<IntType>(res | (v >> comp));
-        reslen += numBits;
-    }
-    return res;
-}
-
-static constexpr std::size_t NumReplicateEntries(u32 num_bits) {
-    return std::size_t(1) << num_bits;
-}
-
-template <typename IntType, u32 num_bits, u32 to_bit>
-static constexpr auto MakeReplicateTable() {
-    std::array<IntType, NumReplicateEntries(num_bits)> table{};
-    for (IntType value = 0; value < static_cast<IntType>(std::size(table)); ++value) {
-        table[value] = Replicate(value, num_bits, to_bit);
-    }
-    return table;
-}
-
-static constexpr auto REPLICATE_BYTE_TO_16_TABLE = MakeReplicateTable<u32, 8, 16>();
-static constexpr u32 ReplicateByteTo16(std::size_t value) {
-    return REPLICATE_BYTE_TO_16_TABLE[value];
-}
-
-static constexpr auto REPLICATE_BIT_TO_7_TABLE = MakeReplicateTable<u32, 1, 7>();
-static constexpr u32 ReplicateBitTo7(std::size_t value) {
-    return REPLICATE_BIT_TO_7_TABLE[value];
-}
-
-static constexpr auto REPLICATE_BIT_TO_9_TABLE = MakeReplicateTable<u32, 1, 9>();
-static constexpr u32 ReplicateBitTo9(std::size_t value) {
-    return REPLICATE_BIT_TO_9_TABLE[value];
-}
-
-static constexpr auto REPLICATE_1_BIT_TO_8_TABLE = MakeReplicateTable<u32, 1, 8>();
-static constexpr auto REPLICATE_2_BIT_TO_8_TABLE = MakeReplicateTable<u32, 2, 8>();
-static constexpr auto REPLICATE_3_BIT_TO_8_TABLE = MakeReplicateTable<u32, 3, 8>();
-static constexpr auto REPLICATE_4_BIT_TO_8_TABLE = MakeReplicateTable<u32, 4, 8>();
-static constexpr auto REPLICATE_5_BIT_TO_8_TABLE = MakeReplicateTable<u32, 5, 8>();
-static constexpr auto REPLICATE_6_BIT_TO_8_TABLE = MakeReplicateTable<u32, 6, 8>();
-static constexpr auto REPLICATE_7_BIT_TO_8_TABLE = MakeReplicateTable<u32, 7, 8>();
-static constexpr auto REPLICATE_8_BIT_TO_8_TABLE = MakeReplicateTable<u32, 8, 8>();
-/// Use a precompiled table with the most common usages, if it's not in the expected range, fallback
-/// to the runtime implementation
-static constexpr u32 FastReplicateTo8(u32 value, u32 num_bits) {
-    switch (num_bits) {
-    case 1:
-        return REPLICATE_1_BIT_TO_8_TABLE[value];
-    case 2:
-        return REPLICATE_2_BIT_TO_8_TABLE[value];
-    case 3:
-        return REPLICATE_3_BIT_TO_8_TABLE[value];
-    case 4:
-        return REPLICATE_4_BIT_TO_8_TABLE[value];
-    case 5:
-        return REPLICATE_5_BIT_TO_8_TABLE[value];
-    case 6:
-        return REPLICATE_6_BIT_TO_8_TABLE[value];
-    case 7:
-        return REPLICATE_7_BIT_TO_8_TABLE[value];
-    case 8:
-        return REPLICATE_8_BIT_TO_8_TABLE[value];
-    default:
-        return Replicate(value, num_bits, 8);
-    }
-}
-
-static constexpr auto REPLICATE_1_BIT_TO_6_TABLE = MakeReplicateTable<u32, 1, 6>();
-static constexpr auto REPLICATE_2_BIT_TO_6_TABLE = MakeReplicateTable<u32, 2, 6>();
-static constexpr auto REPLICATE_3_BIT_TO_6_TABLE = MakeReplicateTable<u32, 3, 6>();
-static constexpr auto REPLICATE_4_BIT_TO_6_TABLE = MakeReplicateTable<u32, 4, 6>();
-static constexpr auto REPLICATE_5_BIT_TO_6_TABLE = MakeReplicateTable<u32, 5, 6>();
-static constexpr u32 FastReplicateTo6(u32 value, u32 num_bits) {
-    switch (num_bits) {
-    case 1:
-        return REPLICATE_1_BIT_TO_6_TABLE[value];
-    case 2:
-        return REPLICATE_2_BIT_TO_6_TABLE[value];
-    case 3:
-        return REPLICATE_3_BIT_TO_6_TABLE[value];
-    case 4:
-        return REPLICATE_4_BIT_TO_6_TABLE[value];
-    case 5:
-        return REPLICATE_5_BIT_TO_6_TABLE[value];
-    default:
-        return Replicate(value, num_bits, 6);
-    }
-}
-
-class Pixel {
-protected:
-    using ChannelType = s16;
-    u8 m_BitDepth[4] = {8, 8, 8, 8};
-    s16 color[4] = {};
-
-public:
-    Pixel() = default;
-    Pixel(u32 a, u32 r, u32 g, u32 b, u32 bitDepth = 8)
-        : m_BitDepth{u8(bitDepth), u8(bitDepth), u8(bitDepth), u8(bitDepth)},
-          color{static_cast<ChannelType>(a), static_cast<ChannelType>(r),
-                static_cast<ChannelType>(g), static_cast<ChannelType>(b)} {}
-
-    // Changes the depth of each pixel. This scales the values to
-    // the appropriate bit depth by either truncating the least
-    // significant bits when going from larger to smaller bit depth
-    // or by repeating the most significant bits when going from
-    // smaller to larger bit depths.
-    void ChangeBitDepth() {
-        for (u32 i = 0; i < 4; i++) {
-            Component(i) = ChangeBitDepth(Component(i), m_BitDepth[i]);
-            m_BitDepth[i] = 8;
-        }
-    }
-
-    template <typename IntType>
-    static float ConvertChannelToFloat(IntType channel, u8 bitDepth) {
-        float denominator = static_cast<float>((1 << bitDepth) - 1);
-        return static_cast<float>(channel) / denominator;
-    }
-
-    // Changes the bit depth of a single component. See the comment
-    // above for how we do this.
-    static ChannelType ChangeBitDepth(Pixel::ChannelType val, u8 oldDepth) {
-        assert(oldDepth <= 8);
-
-        if (oldDepth == 8) {
-            // Do nothing
-            return val;
-        } else if (oldDepth == 0) {
-            return static_cast<ChannelType>((1 << 8) - 1);
-        } else if (8 > oldDepth) {
-            return static_cast<ChannelType>(FastReplicateTo8(static_cast<u32>(val), oldDepth));
-        } else {
-            // oldDepth > newDepth
-            const u8 bitsWasted = static_cast<u8>(oldDepth - 8);
-            u16 v = static_cast<u16>(val);
-            v = static_cast<u16>((v + (1 << (bitsWasted - 1))) >> bitsWasted);
-            v = ::std::min<u16>(::std::max<u16>(0, v), static_cast<u16>((1 << 8) - 1));
-            return static_cast<u8>(v);
-        }
-
-        assert(false && "We shouldn't get here.");
-        return 0;
-    }
-
-    const ChannelType& A() const {
-        return color[0];
-    }
-    ChannelType& A() {
-        return color[0];
-    }
-    const ChannelType& R() const {
-        return color[1];
-    }
-    ChannelType& R() {
-        return color[1];
-    }
-    const ChannelType& G() const {
-        return color[2];
-    }
-    ChannelType& G() {
-        return color[2];
-    }
-    const ChannelType& B() const {
-        return color[3];
-    }
-    ChannelType& B() {
-        return color[3];
-    }
-    const ChannelType& Component(u32 idx) const {
-        return color[idx];
-    }
-    ChannelType& Component(u32 idx) {
-        return color[idx];
-    }
-
-    void GetBitDepth(u8 (&outDepth)[4]) const {
-        for (s32 i = 0; i < 4; i++) {
-            outDepth[i] = m_BitDepth[i];
-        }
-    }
-
-    // Take all of the components, transform them to their 8-bit variants,
-    // and then pack each channel into an R8G8B8A8 32-bit integer. We assume
-    // that the architecture is little-endian, so the alpha channel will end
-    // up in the most-significant byte.
-    u32 Pack() const {
-        Pixel eightBit(*this);
-        eightBit.ChangeBitDepth();
-
-        u32 r = 0;
-        r |= eightBit.A();
-        r <<= 8;
-        r |= eightBit.B();
-        r <<= 8;
-        r |= eightBit.G();
-        r <<= 8;
-        r |= eightBit.R();
-        return r;
-    }
-
-    // Clamps the pixel to the range [0,255]
-    void ClampByte() {
-        for (u32 i = 0; i < 4; i++) {
-            color[i] = (color[i] < 0) ? 0 : ((color[i] > 255) ? 255 : color[i]);
-        }
-    }
-
-    void MakeOpaque() {
-        A() = 255;
-    }
-};
-
-static void DecodeColorValues(u32* out, std::span<u8> data, const u32* modes, const u32 nPartitions,
-                              const u32 nBitsForColorData) {
-    // First figure out how many color values we have
-    u32 nValues = 0;
-    for (u32 i = 0; i < nPartitions; i++) {
-        nValues += ((modes[i] >> 2) + 1) << 1;
-    }
-
-    // Then based on the number of values and the remaining number of bits,
-    // figure out the max value for each of them...
-    u32 range = 256;
-    while (--range > 0) {
-        IntegerEncodedValue val = EncodingsValues[range];
-        u32 bitLength = val.GetBitLength(nValues);
-        if (bitLength <= nBitsForColorData) {
-            // Find the smallest possible range that matches the given encoding
-            while (--range > 0) {
-                IntegerEncodedValue newval = EncodingsValues[range];
-                if (!newval.MatchesEncoding(val)) {
-                    break;
-                }
-            }
-
-            // Return to last matching range.
-            range++;
-            break;
-        }
-    }
-
-    // We now have enough to decode our integer sequence.
-    IntegerEncodedVector decodedColorValues;
-
-    InputBitStream colorStream(data, 0);
-    DecodeIntegerSequence(decodedColorValues, colorStream, range, nValues);
-
-    // Once we have the decoded values, we need to dequantize them to the 0-255 range
-    // This procedure is outlined in ASTC spec C.2.13
-    u32 outIdx = 0;
-    for (auto itr = decodedColorValues.begin(); itr != decodedColorValues.end(); ++itr) {
-        // Have we already decoded all that we need?
-        if (outIdx >= nValues) {
-            break;
-        }
-
-        const IntegerEncodedValue& val = *itr;
-        u32 bitlen = val.num_bits;
-        u32 bitval = val.bit_value;
-
-        assert(bitlen >= 1);
-
-        u32 A = 0, B = 0, C = 0, D = 0;
-        // A is just the lsb replicated 9 times.
-        A = ReplicateBitTo9(bitval & 1);
-
-        switch (val.encoding) {
-        // Replicate bits
-        case IntegerEncoding::JustBits:
-            out[outIdx++] = FastReplicateTo8(bitval, bitlen);
-            break;
-
-        // Use algorithm in C.2.13
-        case IntegerEncoding::Trit: {
-
-            D = val.trit_value;
-
-            switch (bitlen) {
-            case 1: {
-                C = 204;
-            } break;
-
-            case 2: {
-                C = 93;
-                // B = b000b0bb0
-                u32 b = (bitval >> 1) & 1;
-                B = (b << 8) | (b << 4) | (b << 2) | (b << 1);
-            } break;
-
-            case 3: {
-                C = 44;
-                // B = cb000cbcb
-                u32 cb = (bitval >> 1) & 3;
-                B = (cb << 7) | (cb << 2) | cb;
-            } break;
-
-            case 4: {
-                C = 22;
-                // B = dcb000dcb
-                u32 dcb = (bitval >> 1) & 7;
-                B = (dcb << 6) | dcb;
-            } break;
-
-            case 5: {
-                C = 11;
-                // B = edcb000ed
-                u32 edcb = (bitval >> 1) & 0xF;
-                B = (edcb << 5) | (edcb >> 2);
-            } break;
-
-            case 6: {
-                C = 5;
-                // B = fedcb000f
-                u32 fedcb = (bitval >> 1) & 0x1F;
-                B = (fedcb << 4) | (fedcb >> 4);
-            } break;
-
-            default:
-                assert(false && "Unsupported trit encoding for color values!");
-                break;
-            } // switch(bitlen)
-        }     // case IntegerEncoding::Trit
-        break;
-
-        case IntegerEncoding::Qus32: {
-
-            D = val.qus32_value;
-
-            switch (bitlen) {
-            case 1: {
-                C = 113;
-            } break;
-
-            case 2: {
-                C = 54;
-                // B = b0000bb00
-                u32 b = (bitval >> 1) & 1;
-                B = (b << 8) | (b << 3) | (b << 2);
-            } break;
-
-            case 3: {
-                C = 26;
-                // B = cb0000cbc
-                u32 cb = (bitval >> 1) & 3;
-                B = (cb << 7) | (cb << 1) | (cb >> 1);
-            } break;
-
-            case 4: {
-                C = 13;
-                // B = dcb0000dc
-                u32 dcb = (bitval >> 1) & 7;
-                B = (dcb << 6) | (dcb >> 1);
-            } break;
-
-            case 5: {
-                C = 6;
-                // B = edcb0000e
-                u32 edcb = (bitval >> 1) & 0xF;
-                B = (edcb << 5) | (edcb >> 3);
-            } break;
-
-            default:
-                assert(false && "Unsupported quint encoding for color values!");
-                break;
-            } // switch(bitlen)
-        }     // case IntegerEncoding::Qus32
-        break;
-        } // switch(val.encoding)
-
-        if (val.encoding != IntegerEncoding::JustBits) {
-            u32 T = D * C + B;
-            T ^= A;
-            T = (A & 0x80) | (T >> 2);
-            out[outIdx++] = T;
-        }
-    }
-
-    // Make sure that each of our values is in the proper range...
-    for (u32 i = 0; i < nValues; i++) {
-        assert(out[i] <= 255);
-    }
-}
-
-static u32 UnquantizeTexelWeight(const IntegerEncodedValue& val) {
-    u32 bitval = val.bit_value;
-    u32 bitlen = val.num_bits;
-
-    u32 A = ReplicateBitTo7(bitval & 1);
-    u32 B = 0, C = 0, D = 0;
-
-    u32 result = 0;
-    switch (val.encoding) {
-    case IntegerEncoding::JustBits:
-        result = FastReplicateTo6(bitval, bitlen);
-        break;
-
-    case IntegerEncoding::Trit: {
-        D = val.trit_value;
-        assert(D < 3);
-
-        switch (bitlen) {
-        case 0: {
-            u32 results[3] = {0, 32, 63};
-            result = results[D];
-        } break;
-
-        case 1: {
-            C = 50;
-        } break;
-
-        case 2: {
-            C = 23;
-            u32 b = (bitval >> 1) & 1;
-            B = (b << 6) | (b << 2) | b;
-        } break;
-
-        case 3: {
-            C = 11;
-            u32 cb = (bitval >> 1) & 3;
-            B = (cb << 5) | cb;
-        } break;
-
-        default:
-            assert(false && "Invalid trit encoding for texel weight");
-            break;
-        }
-    } break;
-
-    case IntegerEncoding::Qus32: {
-        D = val.qus32_value;
-        assert(D < 5);
-
-        switch (bitlen) {
-        case 0: {
-            u32 results[5] = {0, 16, 32, 47, 63};
-            result = results[D];
-        } break;
-
-        case 1: {
-            C = 28;
-        } break;
-
-        case 2: {
-            C = 13;
-            u32 b = (bitval >> 1) & 1;
-            B = (b << 6) | (b << 1);
-        } break;
-
-        default:
-            assert(false && "Invalid quint encoding for texel weight");
-            break;
-        }
-    } break;
-    }
-
-    if (val.encoding != IntegerEncoding::JustBits && bitlen > 0) {
-        // Decode the value...
-        result = D * C + B;
-        result ^= A;
-        result = (A & 0x20) | (result >> 2);
-    }
-
-    assert(result < 64);
-
-    // Change from [0,63] to [0,64]
-    if (result > 32) {
-        result += 1;
-    }
-
-    return result;
-}
-
-static void UnquantizeTexelWeights(u32 out[2][144], const IntegerEncodedVector& weights,
-                                   const TexelWeightParams& params, const u32 blockWidth,
-                                   const u32 blockHeight) {
-    u32 weightIdx = 0;
-    u32 unquantized[2][144];
-
-    for (auto itr = weights.begin(); itr != weights.end(); ++itr) {
-        unquantized[0][weightIdx] = UnquantizeTexelWeight(*itr);
-
-        if (params.m_bDualPlane) {
-            ++itr;
-            unquantized[1][weightIdx] = UnquantizeTexelWeight(*itr);
-            if (itr == weights.end()) {
-                break;
-            }
-        }
-
-        if (++weightIdx >= (params.m_Width * params.m_Height))
-            break;
-    }
-
-    // Do infill if necessary (Section C.2.18) ...
-    u32 Ds = (1024 + (blockWidth / 2)) / (blockWidth - 1);
-    u32 Dt = (1024 + (blockHeight / 2)) / (blockHeight - 1);
-
-    const u32 kPlaneScale = params.m_bDualPlane ? 2U : 1U;
-    for (u32 plane = 0; plane < kPlaneScale; plane++)
-        for (u32 t = 0; t < blockHeight; t++)
-            for (u32 s = 0; s < blockWidth; s++) {
-                u32 cs = Ds * s;
-                u32 ct = Dt * t;
-
-                u32 gs = (cs * (params.m_Width - 1) + 32) >> 6;
-                u32 gt = (ct * (params.m_Height - 1) + 32) >> 6;
-
-                u32 js = gs >> 4;
-                u32 fs = gs & 0xF;
-
-                u32 jt = gt >> 4;
-                u32 ft = gt & 0x0F;
-
-                u32 w11 = (fs * ft + 8) >> 4;
-                u32 w10 = ft - w11;
-                u32 w01 = fs - w11;
-                u32 w00 = 16 - fs - ft + w11;
-
-                u32 v0 = js + jt * params.m_Width;
-
-#define FIND_TEXEL(tidx, bidx)                                                                     \
-    u32 p##bidx = 0;                                                                               \
-    do {                                                                                           \
-        if ((tidx) < (params.m_Width * params.m_Height)) {                                         \
-            p##bidx = unquantized[plane][(tidx)];                                                  \
-        }                                                                                          \
-    } while (0)
-
-                FIND_TEXEL(v0, 00);
-                FIND_TEXEL(v0 + 1, 01);
-                FIND_TEXEL(v0 + params.m_Width, 10);
-                FIND_TEXEL(v0 + params.m_Width + 1, 11);
-
-#undef FIND_TEXEL
-
-                out[plane][t * blockWidth + s] =
-                    (p00 * w00 + p01 * w01 + p10 * w10 + p11 * w11 + 8) >> 4;
-            }
-}
-
-// Transfers a bit as described in C.2.14
-static inline void BitTransferSigned(s32& a, s32& b) {
-    b >>= 1;
-    b |= a & 0x80;
-    a >>= 1;
-    a &= 0x3F;
-    if (a & 0x20)
-        a -= 0x40;
-}
-
-// Adds more precision to the blue channel as described
-// in C.2.14
-static inline Pixel BlueContract(s32 a, s32 r, s32 g, s32 b) {
-    return Pixel(static_cast<s16>(a), static_cast<s16>((r + b) >> 1),
-                 static_cast<s16>((g + b) >> 1), static_cast<s16>(b));
-}
-
-// Partition selection functions as specified in
-// C.2.21
-static inline u32 hash52(u32 p) {
-    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;
-}
-
-static u32 SelectPartition(s32 seed, s32 x, s32 y, s32 z, s32 partitionCount, s32 smallBlock) {
-    if (1 == partitionCount)
-        return 0;
-
-    if (smallBlock) {
-        x <<= 1;
-        y <<= 1;
-        z <<= 1;
-    }
-
-    seed += (partitionCount - 1) * 1024;
-
-    u32 rnum = hash52(static_cast<u32>(seed));
-    u8 seed1 = static_cast<u8>(rnum & 0xF);
-    u8 seed2 = static_cast<u8>((rnum >> 4) & 0xF);
-    u8 seed3 = static_cast<u8>((rnum >> 8) & 0xF);
-    u8 seed4 = static_cast<u8>((rnum >> 12) & 0xF);
-    u8 seed5 = static_cast<u8>((rnum >> 16) & 0xF);
-    u8 seed6 = static_cast<u8>((rnum >> 20) & 0xF);
-    u8 seed7 = static_cast<u8>((rnum >> 24) & 0xF);
-    u8 seed8 = static_cast<u8>((rnum >> 28) & 0xF);
-    u8 seed9 = static_cast<u8>((rnum >> 18) & 0xF);
-    u8 seed10 = static_cast<u8>((rnum >> 22) & 0xF);
-    u8 seed11 = static_cast<u8>((rnum >> 26) & 0xF);
-    u8 seed12 = static_cast<u8>(((rnum >> 30) | (rnum << 2)) & 0xF);
-
-    seed1 = static_cast<u8>(seed1 * seed1);
-    seed2 = static_cast<u8>(seed2 * seed2);
-    seed3 = static_cast<u8>(seed3 * seed3);
-    seed4 = static_cast<u8>(seed4 * seed4);
-    seed5 = static_cast<u8>(seed5 * seed5);
-    seed6 = static_cast<u8>(seed6 * seed6);
-    seed7 = static_cast<u8>(seed7 * seed7);
-    seed8 = static_cast<u8>(seed8 * seed8);
-    seed9 = static_cast<u8>(seed9 * seed9);
-    seed10 = static_cast<u8>(seed10 * seed10);
-    seed11 = static_cast<u8>(seed11 * seed11);
-    seed12 = static_cast<u8>(seed12 * seed12);
-
-    s32 sh1, sh2, sh3;
-    if (seed & 1) {
-        sh1 = (seed & 2) ? 4 : 5;
-        sh2 = (partitionCount == 3) ? 6 : 5;
-    } else {
-        sh1 = (partitionCount == 3) ? 6 : 5;
-        sh2 = (seed & 2) ? 4 : 5;
-    }
-    sh3 = (seed & 0x10) ? sh1 : sh2;
-
-    seed1 = static_cast<u8>(seed1 >> sh1);
-    seed2 = static_cast<u8>(seed2 >> sh2);
-    seed3 = static_cast<u8>(seed3 >> sh1);
-    seed4 = static_cast<u8>(seed4 >> sh2);
-    seed5 = static_cast<u8>(seed5 >> sh1);
-    seed6 = static_cast<u8>(seed6 >> sh2);
-    seed7 = static_cast<u8>(seed7 >> sh1);
-    seed8 = static_cast<u8>(seed8 >> sh2);
-    seed9 = static_cast<u8>(seed9 >> sh3);
-    seed10 = static_cast<u8>(seed10 >> sh3);
-    seed11 = static_cast<u8>(seed11 >> sh3);
-    seed12 = static_cast<u8>(seed12 >> sh3);
-
-    s32 a = seed1 * x + seed2 * y + seed11 * z + (rnum >> 14);
-    s32 b = seed3 * x + seed4 * y + seed12 * z + (rnum >> 10);
-    s32 c = seed5 * x + seed6 * y + seed9 * z + (rnum >> 6);
-    s32 d = seed7 * x + seed8 * y + seed10 * z + (rnum >> 2);
-
-    a &= 0x3F;
-    b &= 0x3F;
-    c &= 0x3F;
-    d &= 0x3F;
-
-    if (partitionCount < 4)
-        d = 0;
-    if (partitionCount < 3)
-        c = 0;
-
-    if (a >= b && a >= c && a >= d)
-        return 0;
-    else if (b >= c && b >= d)
-        return 1;
-    else if (c >= d)
-        return 2;
-    return 3;
-}
-
-static inline u32 Select2DPartition(s32 seed, s32 x, s32 y, s32 partitionCount, s32 smallBlock) {
-    return SelectPartition(seed, x, y, 0, partitionCount, smallBlock);
-}
-
-// Section C.2.14
-static void ComputeEndpos32s(Pixel& ep1, Pixel& ep2, const u32*& colorValues,
-                             u32 colorEndpos32Mode) {
-#define READ_UINT_VALUES(N)                                                                        \
-    u32 v[N];                                                                                      \
-    for (u32 i = 0; i < N; i++) {                                                                  \
-        v[i] = *(colorValues++);                                                                   \
-    }
-
-#define READ_INT_VALUES(N)                                                                         \
-    s32 v[N];                                                                                      \
-    for (u32 i = 0; i < N; i++) {                                                                  \
-        v[i] = static_cast<s32>(*(colorValues++));                                                 \
-    }
-
-    switch (colorEndpos32Mode) {
-    case 0: {
-        READ_UINT_VALUES(2)
-        ep1 = Pixel(0xFF, v[0], v[0], v[0]);
-        ep2 = Pixel(0xFF, v[1], v[1], v[1]);
-    } break;
-
-    case 1: {
-        READ_UINT_VALUES(2)
-        u32 L0 = (v[0] >> 2) | (v[1] & 0xC0);
-        u32 L1 = std::max(L0 + (v[1] & 0x3F), 0xFFU);
-        ep1 = Pixel(0xFF, L0, L0, L0);
-        ep2 = Pixel(0xFF, L1, L1, L1);
-    } break;
-
-    case 4: {
-        READ_UINT_VALUES(4)
-        ep1 = Pixel(v[2], v[0], v[0], v[0]);
-        ep2 = Pixel(v[3], v[1], v[1], v[1]);
-    } break;
-
-    case 5: {
-        READ_INT_VALUES(4)
-        BitTransferSigned(v[1], v[0]);
-        BitTransferSigned(v[3], v[2]);
-        ep1 = Pixel(v[2], v[0], v[0], v[0]);
-        ep2 = Pixel(v[2] + v[3], v[0] + v[1], v[0] + v[1], v[0] + v[1]);
-        ep1.ClampByte();
-        ep2.ClampByte();
-    } break;
-
-    case 6: {
-        READ_UINT_VALUES(4)
-        ep1 = Pixel(0xFF, v[0] * v[3] >> 8, v[1] * v[3] >> 8, v[2] * v[3] >> 8);
-        ep2 = Pixel(0xFF, v[0], v[1], v[2]);
-    } break;
-
-    case 8: {
-        READ_UINT_VALUES(6)
-        if (v[1] + v[3] + v[5] >= v[0] + v[2] + v[4]) {
-            ep1 = Pixel(0xFF, v[0], v[2], v[4]);
-            ep2 = Pixel(0xFF, v[1], v[3], v[5]);
-        } else {
-            ep1 = BlueContract(0xFF, v[1], v[3], v[5]);
-            ep2 = BlueContract(0xFF, v[0], v[2], v[4]);
-        }
-    } break;
-
-    case 9: {
-        READ_INT_VALUES(6)
-        BitTransferSigned(v[1], v[0]);
-        BitTransferSigned(v[3], v[2]);
-        BitTransferSigned(v[5], v[4]);
-        if (v[1] + v[3] + v[5] >= 0) {
-            ep1 = Pixel(0xFF, v[0], v[2], v[4]);
-            ep2 = Pixel(0xFF, v[0] + v[1], v[2] + v[3], v[4] + v[5]);
-        } else {
-            ep1 = BlueContract(0xFF, v[0] + v[1], v[2] + v[3], v[4] + v[5]);
-            ep2 = BlueContract(0xFF, v[0], v[2], v[4]);
-        }
-        ep1.ClampByte();
-        ep2.ClampByte();
-    } break;
-
-    case 10: {
-        READ_UINT_VALUES(6)
-        ep1 = Pixel(v[4], v[0] * v[3] >> 8, v[1] * v[3] >> 8, v[2] * v[3] >> 8);
-        ep2 = Pixel(v[5], v[0], v[1], v[2]);
-    } break;
-
-    case 12: {
-        READ_UINT_VALUES(8)
-        if (v[1] + v[3] + v[5] >= v[0] + v[2] + v[4]) {
-            ep1 = Pixel(v[6], v[0], v[2], v[4]);
-            ep2 = Pixel(v[7], v[1], v[3], v[5]);
-        } else {
-            ep1 = BlueContract(v[7], v[1], v[3], v[5]);
-            ep2 = BlueContract(v[6], v[0], v[2], v[4]);
-        }
-    } break;
-
-    case 13: {
-        READ_INT_VALUES(8)
-        BitTransferSigned(v[1], v[0]);
-        BitTransferSigned(v[3], v[2]);
-        BitTransferSigned(v[5], v[4]);
-        BitTransferSigned(v[7], v[6]);
-        if (v[1] + v[3] + v[5] >= 0) {
-            ep1 = Pixel(v[6], v[0], v[2], v[4]);
-            ep2 = Pixel(v[7] + v[6], v[0] + v[1], v[2] + v[3], v[4] + v[5]);
-        } else {
-            ep1 = BlueContract(v[6] + v[7], v[0] + v[1], v[2] + v[3], v[4] + v[5]);
-            ep2 = BlueContract(v[6], v[0], v[2], v[4]);
-        }
-        ep1.ClampByte();
-        ep2.ClampByte();
-    } break;
-
-    default:
-        assert(false && "Unsupported color endpoint mode (is it HDR?)");
-        break;
-    }
-
-#undef READ_UINT_VALUES
-#undef READ_INT_VALUES
-}
-
-static void DecompressBlock(std::span<const u8, 16> inBuf, const u32 blockWidth,
-                            const u32 blockHeight, std::span<u32, 12 * 12> outBuf) {
-    InputBitStream strm(inBuf);
-    TexelWeightParams weightParams = DecodeBlockInfo(strm);
-
-    // Was there an error?
-    if (weightParams.m_bError) {
-        assert(false && "Invalid block mode");
-        FillError(outBuf, blockWidth, blockHeight);
-        return;
-    }
-
-    if (weightParams.m_bVoidExtentLDR) {
-        FillVoidExtentLDR(strm, outBuf, blockWidth, blockHeight);
-        return;
-    }
-
-    if (weightParams.m_bVoidExtentHDR) {
-        assert(false && "HDR void extent blocks are unsupported!");
-        FillError(outBuf, blockWidth, blockHeight);
-        return;
-    }
-
-    if (weightParams.m_Width > blockWidth) {
-        assert(false && "Texel weight grid width should be smaller than block width");
-        FillError(outBuf, blockWidth, blockHeight);
-        return;
-    }
-
-    if (weightParams.m_Height > blockHeight) {
-        assert(false && "Texel weight grid height should be smaller than block height");
-        FillError(outBuf, blockWidth, blockHeight);
-        return;
-    }
-
-    // Read num partitions
-    u32 nPartitions = strm.ReadBits<2>() + 1;
-    assert(nPartitions <= 4);
-
-    if (nPartitions == 4 && weightParams.m_bDualPlane) {
-        assert(false && "Dual plane mode is incompatible with four partition blocks");
-        FillError(outBuf, blockWidth, blockHeight);
-        return;
-    }
-
-    // Based on the number of partitions, read the color endpos32 mode for
-    // each partition.
-
-    // Determine partitions, partition index, and color endpos32 modes
-    s32 planeIdx = -1;
-    u32 partitionIndex;
-    u32 colorEndpos32Mode[4] = {0, 0, 0, 0};
-
-    // Define color data.
-    u8 colorEndpos32Data[16];
-    memset(colorEndpos32Data, 0, sizeof(colorEndpos32Data));
-    OutputBitStream colorEndpos32Stream(colorEndpos32Data, 16 * 8, 0);
-
-    // Read extra config data...
-    u32 baseCEM = 0;
-    if (nPartitions == 1) {
-        colorEndpos32Mode[0] = strm.ReadBits<4>();
-        partitionIndex = 0;
-    } else {
-        partitionIndex = strm.ReadBits<10>();
-        baseCEM = strm.ReadBits<6>();
-    }
-    u32 baseMode = (baseCEM & 3);
-
-    // Remaining bits are color endpos32 data...
-    u32 nWeightBits = weightParams.GetPackedBitSize();
-    s32 remainingBits = 128 - nWeightBits - static_cast<s32>(strm.GetBitsRead());
-
-    // Consider extra bits prior to texel data...
-    u32 extraCEMbits = 0;
-    if (baseMode) {
-        switch (nPartitions) {
-        case 2:
-            extraCEMbits += 2;
-            break;
-        case 3:
-            extraCEMbits += 5;
-            break;
-        case 4:
-            extraCEMbits += 8;
-            break;
-        default:
-            assert(false);
-            break;
-        }
-    }
-    remainingBits -= extraCEMbits;
-
-    // Do we have a dual plane situation?
-    u32 planeSelectorBits = 0;
-    if (weightParams.m_bDualPlane) {
-        planeSelectorBits = 2;
-    }
-    remainingBits -= planeSelectorBits;
-
-    // Read color data...
-    u32 colorDataBits = remainingBits;
-    while (remainingBits > 0) {
-        u32 nb = std::min(remainingBits, 8);
-        u32 b = strm.ReadBits(nb);
-        colorEndpos32Stream.WriteBits(b, nb);
-        remainingBits -= 8;
-    }
-
-    // Read the plane selection bits
-    planeIdx = strm.ReadBits(planeSelectorBits);
-
-    // Read the rest of the CEM
-    if (baseMode) {
-        u32 extraCEM = strm.ReadBits(extraCEMbits);
-        u32 CEM = (extraCEM << 6) | baseCEM;
-        CEM >>= 2;
-
-        bool C[4] = {0};
-        for (u32 i = 0; i < nPartitions; i++) {
-            C[i] = CEM & 1;
-            CEM >>= 1;
-        }
-
-        u8 M[4] = {0};
-        for (u32 i = 0; i < nPartitions; i++) {
-            M[i] = CEM & 3;
-            CEM >>= 2;
-            assert(M[i] <= 3);
-        }
-
-        for (u32 i = 0; i < nPartitions; i++) {
-            colorEndpos32Mode[i] = baseMode;
-            if (!(C[i]))
-                colorEndpos32Mode[i] -= 1;
-            colorEndpos32Mode[i] <<= 2;
-            colorEndpos32Mode[i] |= M[i];
-        }
-    } else if (nPartitions > 1) {
-        u32 CEM = baseCEM >> 2;
-        for (u32 i = 0; i < nPartitions; i++) {
-            colorEndpos32Mode[i] = CEM;
-        }
-    }
-
-    // Make sure everything up till here is sane.
-    for (u32 i = 0; i < nPartitions; i++) {
-        assert(colorEndpos32Mode[i] < 16);
-    }
-    assert(strm.GetBitsRead() + weightParams.GetPackedBitSize() == 128);
-
-    // Decode both color data and texel weight data
-    u32 colorValues[32]; // Four values, two endpos32s, four maximum paritions
-    DecodeColorValues(colorValues, colorEndpos32Data, colorEndpos32Mode, nPartitions,
-                      colorDataBits);
-
-    Pixel endpos32s[4][2];
-    const u32* colorValuesPtr = colorValues;
-    for (u32 i = 0; i < nPartitions; i++) {
-        ComputeEndpos32s(endpos32s[i][0], endpos32s[i][1], colorValuesPtr, colorEndpos32Mode[i]);
-    }
-
-    // Read the texel weight data..
-    std::array<u8, 16> texelWeightData;
-    std::ranges::copy(inBuf, texelWeightData.begin());
-
-    // Reverse everything
-    for (u32 i = 0; i < 8; i++) {
-// Taken from http://graphics.stanford.edu/~seander/bithacks.html#ReverseByteWith64Bits
-#define REVERSE_BYTE(b) (((b)*0x80200802ULL) & 0x0884422110ULL) * 0x0101010101ULL >> 32
-        u8 a = static_cast<u8>(REVERSE_BYTE(texelWeightData[i]));
-        u8 b = static_cast<u8>(REVERSE_BYTE(texelWeightData[15 - i]));
-#undef REVERSE_BYTE
-
-        texelWeightData[i] = b;
-        texelWeightData[15 - i] = a;
-    }
-
-    // Make sure that higher non-texel bits are set to zero
-    const u32 clearByteStart = (weightParams.GetPackedBitSize() >> 3) + 1;
-    if (clearByteStart > 0 && clearByteStart <= texelWeightData.size()) {
-        texelWeightData[clearByteStart - 1] &=
-            static_cast<u8>((1 << (weightParams.GetPackedBitSize() % 8)) - 1);
-        std::memset(texelWeightData.data() + clearByteStart, 0,
-                    std::min(16U - clearByteStart, 16U));
-    }
-
-    IntegerEncodedVector texelWeightValues;
-
-    InputBitStream weightStream(texelWeightData);
-
-    DecodeIntegerSequence(texelWeightValues, weightStream, weightParams.m_MaxWeight,
-                          weightParams.GetNumWeightValues());
-
-    // Blocks can be at most 12x12, so we can have as many as 144 weights
-    u32 weights[2][144];
-    UnquantizeTexelWeights(weights, texelWeightValues, weightParams, blockWidth, blockHeight);
-
-    // Now that we have endpos32s and weights, we can s32erpolate and generate
-    // the proper decoding...
-    for (u32 j = 0; j < blockHeight; j++)
-        for (u32 i = 0; i < blockWidth; i++) {
-            u32 partition = Select2DPartition(partitionIndex, i, j, nPartitions,
-                                              (blockHeight * blockWidth) < 32);
-            assert(partition < nPartitions);
-
-            Pixel p;
-            for (u32 c = 0; c < 4; c++) {
-                u32 C0 = endpos32s[partition][0].Component(c);
-                C0 = ReplicateByteTo16(C0);
-                u32 C1 = endpos32s[partition][1].Component(c);
-                C1 = ReplicateByteTo16(C1);
-
-                u32 plane = 0;
-                if (weightParams.m_bDualPlane && (((planeIdx + 1) & 3) == c)) {
-                    plane = 1;
-                }
-
-                u32 weight = weights[plane][j * blockWidth + i];
-                u32 C = (C0 * (64 - weight) + C1 * weight + 32) / 64;
-                if (C == 65535) {
-                    p.Component(c) = 255;
-                } else {
-                    double Cf = static_cast<double>(C);
-                    p.Component(c) = static_cast<u16>(255.0 * (Cf / 65536.0) + 0.5);
-                }
-            }
-
-            outBuf[j * blockWidth + i] = p.Pack();
-        }
-}
-
-} // namespace ASTCC
-
-namespace Tegra::Texture::ASTC {
-
-void Decompress(std::span<const uint8_t> data, uint32_t width, uint32_t height, uint32_t depth,
-                uint32_t block_width, uint32_t block_height, std::span<uint8_t> output) {
-    u32 block_index = 0;
-    std::size_t depth_offset = 0;
-    for (u32 z = 0; z < depth; z++) {
-        for (u32 y = 0; y < height; y += block_height) {
-            for (u32 x = 0; x < width; x += block_width) {
-                const std::span<const u8, 16> blockPtr{data.subspan(block_index * 16, 16)};
-
-                // Blocks can be at most 12x12
-                std::array<u32, 12 * 12> uncompData;
-                ASTCC::DecompressBlock(blockPtr, block_width, block_height, uncompData);
-
-                u32 decompWidth = std::min(block_width, width - x);
-                u32 decompHeight = std::min(block_height, height - y);
-
-                const std::span<u8> outRow = output.subspan(depth_offset + (y * width + x) * 4);
-                for (u32 jj = 0; jj < decompHeight; jj++) {
-                    std::memcpy(outRow.data() + jj * width * 4,
-                                uncompData.data() + jj * block_width, decompWidth * 4);
-                }
-                ++block_index;
-            }
-        }
-        depth_offset += height * width * 4;
-    }
-}
-
-} // namespace Tegra::Texture::ASTC
diff --git a/src/video_core/textures/astc.h b/src/video_core/textures/astc.h
index 9105119bc..c1c73fda5 100644
--- a/src/video_core/textures/astc.h
+++ b/src/video_core/textures/astc.h
@@ -4,11 +4,129 @@
 
 #pragma once
 
-#include <cstdint>
+#include <bit>
+#include "common/common_types.h"
 
 namespace Tegra::Texture::ASTC {
 
-void Decompress(std::span<const uint8_t> data, uint32_t width, uint32_t height, uint32_t depth,
-                uint32_t block_width, uint32_t block_height, std::span<uint8_t> output);
+enum class IntegerEncoding { JustBits, Quint, Trit };
+
+struct IntegerEncodedValue {
+    constexpr IntegerEncodedValue() = default;
+
+    constexpr IntegerEncodedValue(IntegerEncoding encoding_, u32 num_bits_)
+        : encoding{encoding_}, num_bits{num_bits_} {}
+
+    constexpr bool MatchesEncoding(const IntegerEncodedValue& other) const {
+        return encoding == other.encoding && num_bits == other.num_bits;
+    }
+
+    // Returns the number of bits required to encode num_vals values.
+    u32 GetBitLength(u32 num_vals) const {
+        u32 total_bits = num_bits * num_vals;
+        if (encoding == IntegerEncoding::Trit) {
+            total_bits += (num_vals * 8 + 4) / 5;
+        } else if (encoding == IntegerEncoding::Quint) {
+            total_bits += (num_vals * 7 + 2) / 3;
+        }
+        return total_bits;
+    }
+
+    IntegerEncoding encoding{};
+    u32 num_bits = 0;
+    u32 bit_value = 0;
+    union {
+        u32 quint_value = 0;
+        u32 trit_value;
+    };
+};
+
+// Returns a new instance of this struct that corresponds to the
+// can take no more than mav_value values
+constexpr IntegerEncodedValue CreateEncoding(u32 mav_value) {
+    while (mav_value > 0) {
+        u32 check = mav_value + 1;
+
+        // Is mav_value a power of two?
+        if (!(check & (check - 1))) {
+            return IntegerEncodedValue(IntegerEncoding::JustBits, std::popcount(mav_value));
+        }
+
+        // Is mav_value of the type 3*2^n - 1?
+        if ((check % 3 == 0) && !((check / 3) & ((check / 3) - 1))) {
+            return IntegerEncodedValue(IntegerEncoding::Trit, std::popcount(check / 3 - 1));
+        }
+
+        // Is mav_value of the type 5*2^n - 1?
+        if ((check % 5 == 0) && !((check / 5) & ((check / 5) - 1))) {
+            return IntegerEncodedValue(IntegerEncoding::Quint, std::popcount(check / 5 - 1));
+        }
+
+        // Apparently it can't be represented with a bounded integer sequence...
+        // just iterate.
+        mav_value--;
+    }
+    return IntegerEncodedValue(IntegerEncoding::JustBits, 0);
+}
+
+constexpr std::array<IntegerEncodedValue, 256> MakeEncodedValues() {
+    std::array<IntegerEncodedValue, 256> encodings{};
+    for (std::size_t i = 0; i < encodings.size(); ++i) {
+        encodings[i] = CreateEncoding(static_cast<u32>(i));
+    }
+    return encodings;
+}
+
+constexpr std::array<IntegerEncodedValue, 256> EncodingsValues = MakeEncodedValues();
+
+// Replicates low num_bits such that [(to_bit - 1):(to_bit - 1 - from_bit)]
+// is the same as [(num_bits - 1):0] and repeats all the way down.
+template <typename IntType>
+constexpr IntType Replicate(IntType val, u32 num_bits, u32 to_bit) {
+    if (num_bits == 0 || to_bit == 0) {
+        return 0;
+    }
+    const IntType v = val & static_cast<IntType>((1 << num_bits) - 1);
+    IntType res = v;
+    u32 reslen = num_bits;
+    while (reslen < to_bit) {
+        u32 comp = 0;
+        if (num_bits > to_bit - reslen) {
+            u32 newshift = to_bit - reslen;
+            comp = num_bits - newshift;
+            num_bits = newshift;
+        }
+        res = static_cast<IntType>(res << num_bits);
+        res = static_cast<IntType>(res | (v >> comp));
+        reslen += num_bits;
+    }
+    return res;
+}
+
+constexpr std::size_t NumReplicateEntries(u32 num_bits) {
+    return std::size_t(1) << num_bits;
+}
+
+template <typename IntType, u32 num_bits, u32 to_bit>
+constexpr auto MakeReplicateTable() {
+    std::array<IntType, NumReplicateEntries(num_bits)> table{};
+    for (IntType value = 0; value < static_cast<IntType>(std::size(table)); ++value) {
+        table[value] = Replicate(value, num_bits, to_bit);
+    }
+    return table;
+}
+
+constexpr auto REPLICATE_BYTE_TO_16_TABLE = MakeReplicateTable<u32, 8, 16>();
+constexpr auto REPLICATE_6_BIT_TO_8_TABLE = MakeReplicateTable<u32, 6, 8>();
+constexpr auto REPLICATE_7_BIT_TO_8_TABLE = MakeReplicateTable<u32, 7, 8>();
+constexpr auto REPLICATE_8_BIT_TO_8_TABLE = MakeReplicateTable<u32, 8, 8>();
+
+struct AstcBufferData {
+    decltype(EncodingsValues) encoding_values = EncodingsValues;
+    decltype(REPLICATE_6_BIT_TO_8_TABLE) replicate_6_to_8 = REPLICATE_6_BIT_TO_8_TABLE;
+    decltype(REPLICATE_7_BIT_TO_8_TABLE) replicate_7_to_8 = REPLICATE_7_BIT_TO_8_TABLE;
+    decltype(REPLICATE_8_BIT_TO_8_TABLE) replicate_8_to_8 = REPLICATE_8_BIT_TO_8_TABLE;
+    decltype(REPLICATE_BYTE_TO_16_TABLE) replicate_byte_to_16 = REPLICATE_BYTE_TO_16_TABLE;
+} constexpr ASTC_BUFFER_DATA;
 
 } // namespace Tegra::Texture::ASTC
diff --git a/src/video_core/textures/decoders.cpp b/src/video_core/textures/decoders.cpp
index 62685a183..3a463d5db 100644
--- a/src/video_core/textures/decoders.cpp
+++ b/src/video_core/textures/decoders.cpp
@@ -17,26 +17,7 @@
 #include "video_core/textures/texture.h"
 
 namespace Tegra::Texture {
-
 namespace {
-/**
- * This table represents the internal swizzle of a gob, in format 16 bytes x 2 sector packing.
- * Calculates the offset of an (x, y) position within a swizzled texture.
- * Taken from the Tegra X1 Technical Reference Manual. pages 1187-1188
- */
-constexpr SwizzleTable MakeSwizzleTableConst() {
-    SwizzleTable table{};
-    for (u32 y = 0; y < table.size(); ++y) {
-        for (u32 x = 0; x < table[0].size(); ++x) {
-            table[y][x] = ((x % 64) / 32) * 256 + ((y % 8) / 2) * 64 + ((x % 32) / 16) * 32 +
-                          (y % 2) * 16 + (x % 16);
-        }
-    }
-    return table;
-}
-
-constexpr SwizzleTable SWIZZLE_TABLE = MakeSwizzleTableConst();
-
 template <bool TO_LINEAR>
 void Swizzle(std::span<u8> output, std::span<const u8> input, u32 bytes_per_pixel, u32 width,
              u32 height, u32 depth, u32 block_height, u32 block_depth, u32 stride_alignment) {
@@ -91,10 +72,6 @@ void Swizzle(std::span<u8> output, std::span<const u8> input, u32 bytes_per_pixe
 }
 } // Anonymous namespace
 
-SwizzleTable MakeSwizzleTable() {
-    return SWIZZLE_TABLE;
-}
-
 void UnswizzleTexture(std::span<u8> output, std::span<const u8> input, u32 bytes_per_pixel,
                       u32 width, u32 height, u32 depth, u32 block_height, u32 block_depth,
                       u32 stride_alignment) {
diff --git a/src/video_core/textures/decoders.h b/src/video_core/textures/decoders.h
index d7cdc81e8..4c14cefbf 100644
--- a/src/video_core/textures/decoders.h
+++ b/src/video_core/textures/decoders.h
@@ -23,8 +23,22 @@ constexpr u32 GOB_SIZE_SHIFT = GOB_SIZE_X_SHIFT + GOB_SIZE_Y_SHIFT + GOB_SIZE_Z_
 
 using SwizzleTable = std::array<std::array<u32, GOB_SIZE_X>, GOB_SIZE_Y>;
 
-/// Returns a z-order swizzle table
-SwizzleTable MakeSwizzleTable();
+/**
+ * This table represents the internal swizzle of a gob, in format 16 bytes x 2 sector packing.
+ * Calculates the offset of an (x, y) position within a swizzled texture.
+ * Taken from the Tegra X1 Technical Reference Manual. pages 1187-1188
+ */
+constexpr SwizzleTable MakeSwizzleTable() {
+    SwizzleTable table{};
+    for (u32 y = 0; y < table.size(); ++y) {
+        for (u32 x = 0; x < table[0].size(); ++x) {
+            table[y][x] = ((x % 64) / 32) * 256 + ((y % 8) / 2) * 64 + ((x % 32) / 16) * 32 +
+                          (y % 2) * 16 + (x % 16);
+        }
+    }
+    return table;
+}
+constexpr SwizzleTable SWIZZLE_TABLE = MakeSwizzleTable();
 
 /// Unswizzles a block linear texture into linear memory.
 void UnswizzleTexture(std::span<u8> output, std::span<const u8> input, u32 bytes_per_pixel,