mirror of
https://github.com/wolfpld/tracy.git
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232 lines
8.2 KiB
C++
232 lines
8.2 KiB
C++
#include "../zstd/zstd.h"
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#include "TracyEvent.hpp"
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#include "TracyTextureCompression.hpp"
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namespace tracy
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{
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TextureCompression::TextureCompression()
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: m_buf( nullptr )
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, m_bufSize( 0 )
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, m_cctx( ZSTD_createCCtx() )
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, m_dctx( ZSTD_createDCtx() )
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{
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}
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TextureCompression::~TextureCompression()
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{
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delete[] m_buf;
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ZSTD_freeCCtx( m_cctx );
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ZSTD_freeDCtx( m_dctx );
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}
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uint32_t TextureCompression::Pack( struct ZSTD_CCtx_s* ctx, char*& buf, size_t& bufsz, const char* image, uint32_t inBytes )
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{
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const auto maxout = ZSTD_COMPRESSBOUND( inBytes );
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if( bufsz < maxout )
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{
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bufsz = maxout;
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delete[] buf;
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buf = new char[maxout];
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}
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assert( ctx );
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auto ret = (uint32_t)ZSTD_compressCCtx( ctx, buf, maxout, image, inBytes, 3 );
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#ifndef TRACY_NO_STATISTICS
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m_inputBytes.fetch_add( inBytes, std::memory_order_relaxed );
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m_outputBytes.fetch_add( ret, std::memory_order_relaxed );
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#endif
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return ret;
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}
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const char* TextureCompression::Unpack( const FrameImage& image )
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{
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const auto outsz = size_t( image.w ) * size_t( image.h ) / 2;
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if( m_bufSize < outsz )
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{
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m_bufSize = outsz;
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delete[] m_buf;
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m_buf = new char[outsz];
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}
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assert( m_dctx );
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ZSTD_decompressDCtx( m_dctx, m_buf, outsz, image.ptr, image.csz );
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return m_buf;
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}
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static constexpr uint8_t Dxtc4To3Table[256] = {
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85, 84, 86, 86, 81, 80, 82, 82, 89, 88, 90, 90, 89, 88, 90, 90,
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69, 68, 70, 70, 65, 64, 66, 66, 73, 72, 74, 74, 73, 72, 74, 74,
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101, 100, 102, 102, 97, 96, 98, 98, 105, 104, 106, 106, 105, 104, 106, 106,
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101, 100, 102, 102, 97, 96, 98, 98, 105, 104, 106, 106, 105, 104, 106, 106,
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21, 20, 22, 22, 17, 16, 18, 18, 25, 24, 26, 26, 25, 24, 26, 26,
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5, 4, 6, 6, 1, 0, 2, 2, 9, 8, 10, 10, 9, 8, 10, 10,
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37, 36, 38, 38, 33, 32, 34, 34, 41, 40, 42, 42, 41, 40, 42, 42,
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37, 36, 38, 38, 33, 32, 34, 34, 41, 40, 42, 42, 41, 40, 42, 42,
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149, 148, 150, 150, 145, 144, 146, 146, 153, 152, 154, 154, 153, 152, 154, 154,
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133, 132, 134, 134, 129, 128, 130, 130, 137, 136, 138, 138, 137, 136, 138, 138,
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165, 164, 166, 166, 161, 160, 162, 162, 169, 168, 170, 170, 169, 168, 170, 170,
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165, 164, 166, 166, 161, 160, 162, 162, 169, 168, 170, 170, 169, 168, 170, 170,
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149, 148, 150, 150, 145, 144, 146, 146, 153, 152, 154, 154, 153, 152, 154, 154,
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133, 132, 134, 134, 129, 128, 130, 130, 137, 136, 138, 138, 137, 136, 138, 138,
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165, 164, 166, 166, 161, 160, 162, 162, 169, 168, 170, 170, 169, 168, 170, 170,
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165, 164, 166, 166, 161, 160, 162, 162, 169, 168, 170, 170, 169, 168, 170, 170
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};
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void TextureCompression::Rdo( char* data, size_t blocks )
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{
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assert( blocks > 0 );
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do
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{
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uint32_t idx;
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memcpy( &idx, data+4, 4 );
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if( idx == 0x55555555 )
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{
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data += 8;
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continue;
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}
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uint16_t c0, c1;
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memcpy( &c0, data, 2 );
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memcpy( &c1, data+2, 2 );
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const int r0b = c0 & 0xF800;
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const int g0b = c0 & 0x07E0;
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const int b0b = c0 & 0x001F;
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const int r1b = c1 & 0xF800;
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const int g1b = c1 & 0x07E0;
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const int b1b = c1 & 0x001F;
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const int r0 = ( r0b >> 8 ) | ( r0b >> 13 );
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const int g0 = ( g0b >> 3 ) | ( g0b >> 9 );
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const int b0 = ( b0b << 3 ) | ( b0b >> 2 );
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const int r1 = ( r1b >> 8 ) | ( r1b >> 13 );
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const int g1 = ( g1b >> 3 ) | ( g1b >> 9 );
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const int b1 = ( b1b << 3 ) | ( b1b >> 2 );
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const int dr = abs( r0 - r1 );
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const int dg = abs( g0 - g1 );
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const int db = abs( b0 - b1 );
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const int maxChan1 = std::max( { r0-1, g0, b0-2 } );
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const int maxDelta1 = std::max( { dr-1, dg, db-2 } );
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const int tr1a = 16;
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const int tr1b = 45;
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int tr1;
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if( maxChan1 < tr1a )
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{
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tr1 = 12;
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}
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else if( maxChan1 < tr1b )
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{
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tr1 = 6;
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}
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else
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{
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tr1 = 3;
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}
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if( maxDelta1 <= tr1 )
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{
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uint64_t blk =
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( ( ( r0b + r1b ) >> 1 ) & 0xF800 ) |
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( ( ( g0b + g1b ) >> 1 ) & 0x07E0 ) |
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( ( ( b0b + b1b ) >> 1 ) );
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memcpy( data, &blk, 8 );
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}
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else
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{
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const int maxChan23 = std::max( { r0-2, g0, b0-5 } );
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const int maxDelta23 = std::max( { dr-2, dg, db-5 } );
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const int tr2a = 32;
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const int tr2b = 48;
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int tr2 = 0;
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if( maxChan23 < tr2a )
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{
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tr2 = 12;
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}
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else if( maxChan23 < tr2b )
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{
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tr2 = 6;
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}
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else
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{
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tr2 = 3;
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}
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if( maxDelta23 <= tr2 )
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{
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idx &= 0x55555555;
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memcpy( data+4, &idx, 4 );
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}
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else
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{
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const int tr3a = 48;
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const int tr3b = 64;
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int tr3;
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if( maxChan23 < tr3a )
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{
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tr3 = 48;
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}
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else if( maxChan23 < tr3b )
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{
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tr3 = 32;
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}
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else
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{
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tr3 = 24;
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}
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if( maxDelta23 <= tr3 )
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{
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memcpy( data, &c1, 2 );
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memcpy( data+2, &c0, 2 );
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uint8_t tmp[4];
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memcpy( tmp, &idx, 4 );
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for( int k=0; k<4; k++ ) tmp[k] = Dxtc4To3Table[tmp[k]];
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memcpy( data+4, tmp, 4 );
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}
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}
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}
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data += 8;
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}
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while( --blocks );
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}
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static constexpr uint8_t DxtcIndexTable[256] = {
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85, 87, 86, 84, 93, 95, 94, 92, 89, 91, 90, 88, 81, 83, 82, 80,
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117, 119, 118, 116, 125, 127, 126, 124, 121, 123, 122, 120, 113, 115, 114, 112,
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101, 103, 102, 100, 109, 111, 110, 108, 105, 107, 106, 104, 97, 99, 98, 96,
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69, 71, 70, 68, 77, 79, 78, 76, 73, 75, 74, 72, 65, 67, 66, 64,
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213, 215, 214, 212, 221, 223, 222, 220, 217, 219, 218, 216, 209, 211, 210, 208,
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245, 247, 246, 244, 253, 255, 254, 252, 249, 251, 250, 248, 241, 243, 242, 240,
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229, 231, 230, 228, 237, 239, 238, 236, 233, 235, 234, 232, 225, 227, 226, 224,
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197, 199, 198, 196, 205, 207, 206, 204, 201, 203, 202, 200, 193, 195, 194, 192,
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149, 151, 150, 148, 157, 159, 158, 156, 153, 155, 154, 152, 145, 147, 146, 144,
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181, 183, 182, 180, 189, 191, 190, 188, 185, 187, 186, 184, 177, 179, 178, 176,
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165, 167, 166, 164, 173, 175, 174, 172, 169, 171, 170, 168, 161, 163, 162, 160,
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133, 135, 134, 132, 141, 143, 142, 140, 137, 139, 138, 136, 129, 131, 130, 128,
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21, 23, 22, 20, 29, 31, 30, 28, 25, 27, 26, 24, 17, 19, 18, 16,
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53, 55, 54, 52, 61, 63, 62, 60, 57, 59, 58, 56, 49, 51, 50, 48,
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37, 39, 38, 36, 45, 47, 46, 44, 41, 43, 42, 40, 33, 35, 34, 32,
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5, 7, 6, 4, 13, 15, 14, 12, 9, 11, 10, 8, 1, 3, 2, 0
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};
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void TextureCompression::FixOrder( char* data, size_t blocks )
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{
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assert( blocks > 0 );
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do
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{
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uint8_t tmp[4];
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memcpy( tmp, data+4, 4 );
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for( int k=0; k<4; k++ ) tmp[k] = DxtcIndexTable[(uint8_t)tmp[k]];
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memcpy( data+4, tmp, 4 );
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data += 8;
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}
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while( --blocks );
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}
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}
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