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Perform rate distortion optimization on frame images.

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This commit is contained in:
Bartosz Taudul 2020-04-05 15:04:18 +02:00
parent b19d5731ac
commit f1f4f48c38
4 changed files with 149 additions and 2 deletions
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144
server/TracyTextureCompression.cpp
View File

@ -53,6 +53,150 @@ const char* TextureCompression::Unpack( const FrameImage& image )
return m_buf;
}
static constexpr uint8_t Dxtc4To3Table[256] = {
85, 84, 86, 86, 81, 80, 82, 82, 89, 88, 90, 90, 89, 88, 90, 90,
69, 68, 70, 70, 65, 64, 66, 66, 73, 72, 74, 74, 73, 72, 74, 74,
101, 100, 102, 102, 97, 96, 98, 98, 105, 104, 106, 106, 105, 104, 106, 106,
101, 100, 102, 102, 97, 96, 98, 98, 105, 104, 106, 106, 105, 104, 106, 106,
21, 20, 22, 22, 17, 16, 18, 18, 25, 24, 26, 26, 25, 24, 26, 26,
5, 4, 6, 6, 1, 0, 2, 2, 9, 8, 10, 10, 9, 8, 10, 10,
37, 36, 38, 38, 33, 32, 34, 34, 41, 40, 42, 42, 41, 40, 42, 42,
37, 36, 38, 38, 33, 32, 34, 34, 41, 40, 42, 42, 41, 40, 42, 42,
149, 148, 150, 150, 145, 144, 146, 146, 153, 152, 154, 154, 153, 152, 154, 154,
133, 132, 134, 134, 129, 128, 130, 130, 137, 136, 138, 138, 137, 136, 138, 138,
165, 164, 166, 166, 161, 160, 162, 162, 169, 168, 170, 170, 169, 168, 170, 170,
165, 164, 166, 166, 161, 160, 162, 162, 169, 168, 170, 170, 169, 168, 170, 170,
149, 148, 150, 150, 145, 144, 146, 146, 153, 152, 154, 154, 153, 152, 154, 154,
133, 132, 134, 134, 129, 128, 130, 130, 137, 136, 138, 138, 137, 136, 138, 138,
165, 164, 166, 166, 161, 160, 162, 162, 169, 168, 170, 170, 169, 168, 170, 170,
165, 164, 166, 166, 161, 160, 162, 162, 169, 168, 170, 170, 169, 168, 170, 170
};
void TextureCompression::Rdo( char* data, size_t blocks )
{
assert( blocks > 0 );
do
{
uint32_t idx;
memcpy( &idx, data+4, 4 );
if( idx == 0x55555555 )
{
data += 8;
continue;
}
uint16_t c0, c1;
memcpy( &c0, data, 2 );
memcpy( &c1, data+2, 2 );
const int r0b = c0 & 0xF800;
const int g0b = c0 & 0x07E0;
const int b0b = c0 & 0x001F;
const int r1b = c1 & 0xF800;
const int g1b = c1 & 0x07E0;
const int b1b = c1 & 0x001F;
const int r0 = ( r0b >> 8 ) | ( r0b >> 13 );
const int g0 = ( g0b >> 3 ) | ( g0b >> 9 );
const int b0 = ( b0b << 3 ) | ( b0b >> 2 );
const int r1 = ( r1b >> 8 ) | ( r1b >> 13 );
const int g1 = ( g1b >> 3 ) | ( g1b >> 9 );
const int b1 = ( b1b << 3 ) | ( b1b >> 2 );
const int dr = abs( r0 - r1 );
const int dg = abs( g0 - g1 );
const int db = abs( b0 - b1 );
const int maxChan1 = std::max( { r0-1, g0, b0-2 } );
const int maxDelta1 = std::max( { dr-1, dg, db-2 } );
const int tr1a = 16;
const int tr1b = 45;
int tr1;
if( maxChan1 < tr1a )
{
tr1 = 12;
}
else if( maxChan1 < tr1b )
{
tr1 = 6;
}
else
{
tr1 = 3;
}
if( maxDelta1 <= tr1 )
{
uint64_t blk =
( ( ( r0b + r1b ) >> 1 ) & 0xF800 ) |
( ( ( g0b + g1b ) >> 1 ) & 0x07E0 ) |
( ( ( b0b + b1b ) >> 1 ) );
memcpy( data, &blk, 8 );
}
else
{
const int maxChan23 = std::max( { r0-2, g0, b0-5 } );
const int maxDelta23 = std::max( { dr-2, dg, db-5 } );
const int tr2a = 32;
const int tr2b = 48;
int tr2 = 0;
if( maxChan23 < tr2a )
{
tr2 = 12;
}
else if( maxChan23 < tr2b )
{
tr2 = 6;
}
else
{
tr2 = 3;
}
if( maxDelta23 <= tr2 )
{
uint32_t idx;
memcpy( &idx, data+4, 4 );
idx &= 0x55555555;
memcpy( data+4, &idx, 4 );
}
else
{
const int tr3a = 48;
const int tr3b = 64;
int tr3;
if( maxChan23 < tr3a )
{
tr3 = 48;
}
else if( maxChan23 < tr3b )
{
tr3 = 32;
}
else
{
tr3 = 24;
}
if( maxDelta23 <= tr3 )
{
memcpy( data, &c1, 2 );
memcpy( data+2, &c0, 2 );
uint8_t tmp[4];
memcpy( tmp, &idx, 4 );
for( int k=0; k<4; k++ ) tmp[k] = Dxtc4To3Table[tmp[k]];
memcpy( data+4, tmp, 4 );
}
}
}
data += 8;
}
while( --blocks );
}
static constexpr uint8_t DxtcIndexTable[256] = {
85, 87, 86, 84, 93, 95, 94, 92, 89, 91, 90, 88, 81, 83, 82, 80,
117, 119, 118, 116, 125, 127, 126, 124, 121, 123, 122, 120, 113, 115, 114, 112,

1
server/TracyTextureCompression.hpp
View File

@ -36,6 +36,7 @@ public:
const char* Unpack( const FrameImage& image );
void Rdo( char* data, size_t blocks );
void FixOrder( char* data, size_t blocks );
uint64_t GetInputBytesCount() const { return m_inputBytes.load( std::memory_order_relaxed ); }

2
server/TracyVersion.hpp
View File

@ -7,7 +7,7 @@ namespace Version
{
enum { Major = 0 };
enum { Minor = 6 };
enum { Patch = 9 };
enum { Patch = 10 };
}
}

4
server/TracyWorker.cpp
View File

@ -1524,7 +1524,8 @@ Worker::Worker( FileRead& f, EventType::Type eventMask, bool bgTasks )
data[idx].fi = fi;
data[idx].state.store( JobData::InProgress, std::memory_order_release );
td->Queue( [this, &data, idx, fi] {
td->Queue( [this, &data, idx, fi, fileVer] {
if( fileVer <= FileVersion( 0, 6, 9 ) ) m_texcomp.Rdo( data[idx].buf, fi->w * fi->h / 16 );
fi->csz = m_texcomp.Pack( data[idx].ctx, data[idx].outbuf, data[idx].outsz, data[idx].buf, fi->w * fi->h / 2 );
data[idx].state.store( JobData::DataReady, std::memory_order_release );
} );
@ -3625,6 +3626,7 @@ void Worker::AddFrameImageData( uint64_t ptr, const char* data, size_t sz )
auto dst = (uint8_t*)m_frameImageBuffer;
memcpy( dst, src, sz );
m_texcomp.FixOrder( (char*)dst, sz/8 );
m_texcomp.Rdo( (char*)dst, sz/8 );
uint32_t csz;
auto image = m_texcomp.Pack( m_frameImageBuffer, sz, csz, m_slab );
m_pendingFrameImageData.emplace( ptr, FrameImagePending { image, csz } );