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astc: Use boost's static_vector to avoid heap allocations

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This commit is contained in:
ReinUsesLisp 2020-04-09 05:27:57 -03:00
parent 5de130beea
commit bd2c1ab8a0
1 changed files with 14 additions and 10 deletions
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24
src/video_core/textures/astc.cpp
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@ -20,6 +20,8 @@
#include <cstring> #include <cstring>
#include <vector> #include <vector>
#include <boost/container/static_vector.hpp>
#include "common/common_types.h" #include "common/common_types.h"
#include "video_core/textures/astc.h" #include "video_core/textures/astc.h"
@ -189,9 +191,13 @@ struct IntegerEncodedValue {
u32 trit_value; u32 trit_value;
}; };
}; };
using IntegerEncodedVector = boost::container::static_vector<
IntegerEncodedValue, 64,
boost::container::static_vector_options<
boost::container::inplace_alignment<alignof(IntegerEncodedValue)>,
boost::container::throw_on_overflow<false>>::type>;
static void DecodeTritBlock(InputBitStream& bits, std::vector<IntegerEncodedValue>& result, static void DecodeTritBlock(InputBitStream& bits, IntegerEncodedVector& result, u32 nBitsPerValue) {
u32 nBitsPerValue) {
// Implement the algorithm in section C.2.12 // Implement the algorithm in section C.2.12
u32 m[5]; u32 m[5];
u32 t[5]; u32 t[5];
@ -249,7 +255,7 @@ static void DecodeTritBlock(InputBitStream& bits, std::vector<IntegerEncodedValu
} }
} }
static void DecodeQus32Block(InputBitStream& bits, std::vector<IntegerEncodedValue>& result, static void DecodeQus32Block(InputBitStream& bits, IntegerEncodedVector& result,
u32 nBitsPerValue) { u32 nBitsPerValue) {
// Implement the algorithm in section C.2.12 // Implement the algorithm in section C.2.12
u32 m[3]; u32 m[3];
@ -337,8 +343,8 @@ static constexpr std::array EncodingsValues = MakeEncodedValues();
// Fills result with the values that are encoded in the given // Fills result with the values that are encoded in the given
// bitstream. We must know beforehand what the maximum possible // bitstream. We must know beforehand what the maximum possible
// value is, and how many values we're decoding. // value is, and how many values we're decoding.
static void DecodeIntegerSequence(std::vector<IntegerEncodedValue>& result, InputBitStream& bits, static void DecodeIntegerSequence(IntegerEncodedVector& result, InputBitStream& bits, u32 maxRange,
u32 maxRange, u32 nValues) { u32 nValues) {
// Determine encoding parameters // Determine encoding parameters
IntegerEncodedValue val = EncodingsValues[maxRange]; IntegerEncodedValue val = EncodingsValues[maxRange];
@ -895,8 +901,7 @@ static void DecodeColorValues(u32* out, u8* data, const u32* modes, const u32 nP
} }
// We now have enough to decode our integer sequence. // We now have enough to decode our integer sequence.
std::vector<IntegerEncodedValue> decodedColorValues; IntegerEncodedVector decodedColorValues;
decodedColorValues.reserve(32);
InputBitStream colorStream(data); InputBitStream colorStream(data);
DecodeIntegerSequence(decodedColorValues, colorStream, range, nValues); DecodeIntegerSequence(decodedColorValues, colorStream, range, nValues);
@ -1126,7 +1131,7 @@ static u32 UnquantizeTexelWeight(const IntegerEncodedValue& val) {
return result; return result;
} }
static void UnquantizeTexelWeights(u32 out[2][144], const std::vector<IntegerEncodedValue>& weights, static void UnquantizeTexelWeights(u32 out[2][144], const IntegerEncodedVector& weights,
const TexelWeightParams& params, const u32 blockWidth, const TexelWeightParams& params, const u32 blockWidth,
const u32 blockHeight) { const u32 blockHeight) {
u32 weightIdx = 0; u32 weightIdx = 0;
@ -1624,8 +1629,7 @@ static void DecompressBlock(const u8 inBuf[16], const u32 blockWidth, const u32
static_cast<u8>((1 << (weightParams.GetPackedBitSize() % 8)) - 1); static_cast<u8>((1 << (weightParams.GetPackedBitSize() % 8)) - 1);
memset(texelWeightData + clearByteStart, 0, 16 - clearByteStart); memset(texelWeightData + clearByteStart, 0, 16 - clearByteStart);
std::vector<IntegerEncodedValue> texelWeightValues; IntegerEncodedVector texelWeightValues;
texelWeightValues.reserve(64);
InputBitStream weightStream(texelWeightData); InputBitStream weightStream(texelWeightData);