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- improved normalNx scaling performance by ~10%

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Actual boost heavily depends on platform's memory architecture, made it a bit more cache friendly in general
This commit is contained in:
alexey.lysiuk 2019-12-20 11:04:50 +02:00
parent 33483115cd
commit daedf9d158
1 changed files with 21 additions and 25 deletions
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46
src/gamedata/textures/hires/hqresize.cpp
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@ -236,29 +236,7 @@ static unsigned char *scaleNxHelper( void (*scaleNxFunction) ( uint32_t* , uint3
return newBuffer;
}
static void normalNx ( uint32_t* inputBuffer, uint32_t* outputBuffer, int inWidth, int inHeight, int size )
{
const int width = size * inWidth;
const int height = size * inHeight;
for ( int i = 0; i < inWidth; ++i )
{
for ( int j = 0; j < inHeight; ++j )
{
const uint32_t E = inputBuffer[ i +inWidth*j ];
for ( int k = 0; k < size; k++ )
{
for ( int l = 0; l < size; l++ )
{
outputBuffer[size*i+k + width*(size*j+l)] = E;
}
}
}
}
}
static unsigned char *normalNxHelper( void (normalNxFunction) ( uint32_t* , uint32_t* , int , int, int),
const int N,
static unsigned char *normalNx(const int N,
unsigned char *inputBuffer,
const int inWidth,
const int inHeight,
@ -269,7 +247,25 @@ static unsigned char *normalNxHelper( void (normalNxFunction) ( uint32_t* , uint
outHeight = N *inHeight;
unsigned char * newBuffer = new unsigned char[outWidth*outHeight*4];
normalNxFunction ( reinterpret_cast<uint32_t*> ( inputBuffer ), reinterpret_cast<uint32_t*> ( newBuffer ), inWidth, inHeight, N );
uint32_t *const inBuffer = reinterpret_cast<uint32_t *>(inputBuffer);
uint32_t *const outBuffer = reinterpret_cast<uint32_t *>(newBuffer);
for (int y = 0; y < inHeight; ++y)
{
const int inRowPos = inWidth * y;
const int outRowPos = outWidth * N * y;
for (int x = 0; x < inWidth; ++x)
{
std::fill_n(&outBuffer[outRowPos + N * x], N, inBuffer[inRowPos + x]);
}
for (int c = 1; c < N; ++c)
{
std::copy_n(&outBuffer[outRowPos], outWidth, &outBuffer[outRowPos + outWidth * c]);
}
}
delete[] inputBuffer;
return newBuffer;
}
@ -495,7 +491,7 @@ void FTexture::CreateUpsampledTextureBuffer(FTextureBuffer &texbuffer, bool hasA
else if (type == 5)
texbuffer.mBuffer = xbrzHelper(xbrzOldScale, mult, texbuffer.mBuffer, inWidth, inHeight, texbuffer.mWidth, texbuffer.mHeight);
else if (type == 6)
texbuffer.mBuffer = normalNxHelper(&normalNx, mult, texbuffer.mBuffer, inWidth, inHeight, texbuffer.mWidth, texbuffer.mHeight);
texbuffer.mBuffer = normalNx(mult, texbuffer.mBuffer, inWidth, inHeight, texbuffer.mWidth, texbuffer.mHeight);
else
return;
}