diff options
-rw-r--r-- | src/video_core/textures/astc.cpp | 138 |
1 files changed, 60 insertions, 78 deletions
diff --git a/src/video_core/textures/astc.cpp b/src/video_core/textures/astc.cpp index 3c4ad1c9d..b1feacae9 100644 --- a/src/video_core/textures/astc.cpp +++ b/src/video_core/textures/astc.cpp @@ -25,16 +25,15 @@ class BitStream { public: - BitStream(unsigned char* ptr, int nBits = 0, int start_offset = 0) - : m_BitsWritten(0), m_BitsRead(0), m_NumBits(nBits), m_CurByte(ptr), - m_NextBit(start_offset % 8), done(false) {} + explicit BitStream(unsigned char* ptr, int nBits = 0, int start_offset = 0) + : m_NumBits(nBits), m_CurByte(ptr), m_NextBit(start_offset % 8) {} + + ~BitStream() = default; int GetBitsWritten() const { return m_BitsWritten; } - ~BitStream() {} - void WriteBitsR(unsigned int val, unsigned int nBits) { for (unsigned int i = 0; i < nBits; i++) { WriteBit((val >> (nBits - i - 1)) & 1); @@ -95,33 +94,28 @@ private: done = done || ++m_BitsWritten >= m_NumBits; } - int m_BitsWritten; + int m_BitsWritten = 0; const int m_NumBits; unsigned char* m_CurByte; - int m_NextBit; - int m_BitsRead; + int m_NextBit = 0; + int m_BitsRead = 0; - bool done; + bool done = false; }; template <typename IntType> class Bits { -private: - const IntType& m_Bits; - - // Don't copy - Bits() {} - Bits(const Bits&) {} - Bits& operator=(const Bits&) {} - public: - explicit Bits(IntType& v) : m_Bits(v) {} + explicit Bits(const IntType& v) : m_Bits(v) {} - uint8_t operator[](uint32_t bitPos) { + Bits(const Bits&) = delete; + Bits& operator=(const Bits&) = delete; + + uint8_t operator[](uint32_t bitPos) const { return static_cast<uint8_t>((m_Bits >> bitPos) & 1); } - IntType operator()(uint32_t start, uint32_t end) { + IntType operator()(uint32_t start, uint32_t end) const { if (start == end) { return (*this)[start]; } else if (start > end) { @@ -133,6 +127,9 @@ public: uint64_t mask = (1 << (end - start + 1)) - 1; return (m_Bits >> start) & mask; } + +private: + const IntType& m_Bits; }; enum EIntegerEncoding { eIntegerEncoding_JustBits, eIntegerEncoding_Quint, eIntegerEncoding_Trit }; @@ -186,12 +183,12 @@ public: m_QuintValue = val; } - bool MatchesEncoding(const IntegerEncodedValue& other) { + bool MatchesEncoding(const IntegerEncodedValue& other) const { return m_Encoding == other.m_Encoding && m_NumBits == other.m_NumBits; } // Returns the number of bits required to encode nVals values. - uint32_t GetBitLength(uint32_t nVals) { + uint32_t GetBitLength(uint32_t nVals) const { uint32_t totalBits = m_NumBits * nVals; if (m_Encoding == eIntegerEncoding_Trit) { totalBits += (nVals * 8 + 4) / 5; @@ -382,19 +379,15 @@ private: namespace ASTCC { struct TexelWeightParams { - uint32_t m_Width; - uint32_t m_Height; - bool m_bDualPlane; - uint32_t m_MaxWeight; - bool m_bError; - bool m_bVoidExtentLDR; - bool m_bVoidExtentHDR; - - TexelWeightParams() { - memset(this, 0, sizeof(*this)); - } - - uint32_t GetPackedBitSize() { + uint32_t m_Width = 0; + uint32_t m_Height = 0; + bool m_bDualPlane = false; + uint32_t m_MaxWeight = 0; + bool m_bError = false; + bool m_bVoidExtentLDR = false; + bool m_bVoidExtentHDR = false; + + uint32_t GetPackedBitSize() const { // How many indices do we have? uint32_t nIdxs = m_Height * m_Width; if (m_bDualPlane) { @@ -413,7 +406,7 @@ struct TexelWeightParams { } }; -TexelWeightParams DecodeBlockInfo(BitStream& strm) { +static TexelWeightParams DecodeBlockInfo(BitStream& strm) { TexelWeightParams params; // Read the entire block mode all at once @@ -612,8 +605,8 @@ TexelWeightParams DecodeBlockInfo(BitStream& strm) { return params; } -void FillVoidExtentLDR(BitStream& strm, uint32_t* const outBuf, uint32_t blockWidth, - uint32_t blockHeight) { +static void FillVoidExtentLDR(BitStream& strm, uint32_t* const outBuf, uint32_t blockWidth, + uint32_t blockHeight) { // Don't actually care about the void extent, just read the bits... for (int i = 0; i < 4; ++i) { strm.ReadBits(13); @@ -628,23 +621,25 @@ void FillVoidExtentLDR(BitStream& strm, uint32_t* const outBuf, uint32_t blockWi uint32_t rgba = (r >> 8) | (g & 0xFF00) | (static_cast<uint32_t>(b) & 0xFF00) << 8 | (static_cast<uint32_t>(a) & 0xFF00) << 16; - for (uint32_t j = 0; j < blockHeight; j++) + for (uint32_t j = 0; j < blockHeight; j++) { for (uint32_t i = 0; i < blockWidth; i++) { outBuf[j * blockWidth + i] = rgba; } + } } -void FillError(uint32_t* outBuf, uint32_t blockWidth, uint32_t blockHeight) { - for (uint32_t j = 0; j < blockHeight; j++) +static void FillError(uint32_t* outBuf, uint32_t blockWidth, uint32_t blockHeight) { + for (uint32_t j = 0; j < blockHeight; j++) { for (uint32_t 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> -IntType Replicate(const IntType& val, uint32_t numBits, uint32_t toBit) { +static IntType Replicate(const IntType& val, uint32_t numBits, uint32_t toBit) { if (numBits == 0) return 0; if (toBit == 0) @@ -668,27 +663,15 @@ IntType Replicate(const IntType& val, uint32_t numBits, uint32_t toBit) { class Pixel { protected: - typedef int16_t ChannelType; - uint8_t m_BitDepth[4]; - int16_t color[4]; + using ChannelType = int16_t; + uint8_t m_BitDepth[4] = {8, 8, 8, 8}; + int16_t color[4] = {}; public: - Pixel() { - for (int i = 0; i < 4; i++) { - m_BitDepth[i] = 8; - color[i] = 0; - } - } - - Pixel(ChannelType a, ChannelType r, ChannelType g, ChannelType b, unsigned bitDepth = 8) { - for (int i = 0; i < 4; i++) - m_BitDepth[i] = bitDepth; - - color[0] = a; - color[1] = r; - color[2] = g; - color[3] = b; - } + Pixel() = default; + Pixel(ChannelType a, ChannelType r, ChannelType g, ChannelType b, unsigned bitDepth = 8) + : m_BitDepth{uint8_t(bitDepth), uint8_t(bitDepth), uint8_t(bitDepth), uint8_t(bitDepth)}, + color{a, r, g, b} {} // Changes the depth of each pixel. This scales the values to // the appropriate bit depth by either truncating the least @@ -807,8 +790,8 @@ public: } }; -void DecodeColorValues(uint32_t* out, uint8_t* data, uint32_t* modes, const uint32_t nPartitions, - const uint32_t nBitsForColorData) { +static void DecodeColorValues(uint32_t* out, uint8_t* data, const uint32_t* modes, + const uint32_t nPartitions, const uint32_t nBitsForColorData) { // First figure out how many color values we have uint32_t nValues = 0; for (uint32_t i = 0; i < nPartitions; i++) { @@ -844,8 +827,7 @@ void DecodeColorValues(uint32_t* out, uint8_t* data, uint32_t* modes, const uint // 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 uint32_t outIdx = 0; - std::vector<IntegerEncodedValue>::const_iterator itr; - for (itr = decodedColorValues.begin(); itr != decodedColorValues.end(); itr++) { + for (auto itr = decodedColorValues.begin(); itr != decodedColorValues.end(); ++itr) { // Have we already decoded all that we need? if (outIdx >= nValues) { break; @@ -978,7 +960,7 @@ void DecodeColorValues(uint32_t* out, uint8_t* data, uint32_t* modes, const uint } } -uint32_t UnquantizeTexelWeight(const IntegerEncodedValue& val) { +static uint32_t UnquantizeTexelWeight(const IntegerEncodedValue& val) { uint32_t bitval = val.GetBitValue(); uint32_t bitlen = val.BaseBitLength(); @@ -1067,17 +1049,18 @@ uint32_t UnquantizeTexelWeight(const IntegerEncodedValue& val) { return result; } -void UnquantizeTexelWeights(uint32_t out[2][144], std::vector<IntegerEncodedValue>& weights, - const TexelWeightParams& params, const uint32_t blockWidth, - const uint32_t blockHeight) { +static void UnquantizeTexelWeights(uint32_t out[2][144], + const std::vector<IntegerEncodedValue>& weights, + const TexelWeightParams& params, const uint32_t blockWidth, + const uint32_t blockHeight) { uint32_t weightIdx = 0; uint32_t unquantized[2][144]; - std::vector<IntegerEncodedValue>::const_iterator itr; - for (itr = weights.begin(); itr != weights.end(); itr++) { + + for (auto itr = weights.begin(); itr != weights.end(); ++itr) { unquantized[0][weightIdx] = UnquantizeTexelWeight(*itr); if (params.m_bDualPlane) { - itr++; + ++itr; unquantized[1][weightIdx] = UnquantizeTexelWeight(*itr); if (itr == weights.end()) { break; @@ -1261,8 +1244,8 @@ static inline uint32_t Select2DPartition(int32_t seed, int32_t x, int32_t y, int } // Section C.2.14 -void ComputeEndpoints(Pixel& ep1, Pixel& ep2, const uint32_t*& colorValues, - uint32_t colorEndpointMode) { +static void ComputeEndpoints(Pixel& ep1, Pixel& ep2, const uint32_t*& colorValues, + uint32_t colorEndpointMode) { #define READ_UINT_VALUES(N) \ uint32_t v[N]; \ for (uint32_t i = 0; i < N; i++) { \ @@ -1382,8 +1365,8 @@ void ComputeEndpoints(Pixel& ep1, Pixel& ep2, const uint32_t*& colorValues, #undef READ_INT_VALUES } -void DecompressBlock(uint8_t inBuf[16], const uint32_t blockWidth, const uint32_t blockHeight, - uint32_t* outBuf) { +static void DecompressBlock(uint8_t inBuf[16], const uint32_t blockWidth, + const uint32_t blockHeight, uint32_t* outBuf) { BitStream strm(inBuf); TexelWeightParams weightParams = DecodeBlockInfo(strm); @@ -1617,8 +1600,7 @@ namespace Tegra::Texture::ASTC { std::vector<uint8_t> Decompress(std::vector<uint8_t>& data, uint32_t width, uint32_t height, uint32_t block_width, uint32_t block_height) { uint32_t blockIdx = 0; - std::vector<uint8_t> outData; - outData.resize(height * width * 4); + std::vector<uint8_t> outData(height * width * 4); for (uint32_t j = 0; j < height; j += block_height) { for (uint32_t i = 0; i < width; i += block_width) { |