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Move RDO threshold logic to tables.

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This commit is contained in:
Bartosz Taudul 2020-06-11 14:02:11 +02:00
parent 2ab605d232
commit 3992eb0542
2 changed files with 31 additions and 48 deletions
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24
extra/rdotbl.c Normal file
View File

@ -0,0 +1,24 @@
#include <stdio.h>
int main()
{
//int a = 16, b = 44, s = 4;
//int av = 12, bv = 6, cv = 3;
//int a = 32, b = 48, s = 16;
//int av = 12, bv = 6, cv = 3;
int a = 48, b = 64, s = 16;
int av = 48, bv = 32, cv = 24;
printf( "int TrTbl[] = { " );
int first = 1;
for( int i=0; i<256; i+=s )
{
if( first ) first = 0; else printf( ", " );
if( i < a ) printf( "%i", av );
else if( i < b ) printf( "%i", bv );
else printf( "%i", cv );
}
printf( " };\n" );
}

55
server/TracyTextureCompression.cpp
View File

@ -84,6 +84,10 @@ static tracy_force_inline int max3( int a, int b, int c )
} }
} }
static constexpr int TrTbl1[] = { 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3 };
static constexpr int TrTbl2[] = { 12, 12, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3 };
static constexpr int TrTbl3[] = { 48, 48, 48, 32, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24 };
void TextureCompression::Rdo( char* data, size_t blocks ) void TextureCompression::Rdo( char* data, size_t blocks )
{ {
assert( blocks > 0 ); assert( blocks > 0 );
@ -124,22 +128,7 @@ void TextureCompression::Rdo( char* data, size_t blocks )
const int maxChan1 = max3( r0-1, g0, b0-2 ); const int maxChan1 = max3( r0-1, g0, b0-2 );
const int maxDelta1 = max3( dr-1, dg, db-2 ); const int maxDelta1 = max3( dr-1, dg, db-2 );
const int tr1a = 16; const int tr1 = TrTbl1[maxChan1 / 4];
const int tr1b = 45;
int tr1;
if( maxChan1 < tr1a )
{
tr1 = 12;
}
else if( maxChan1 < tr1b )
{
tr1 = 6;
}
else
{
tr1 = 3;
}
if( maxDelta1 <= tr1 ) if( maxDelta1 <= tr1 )
{ {
uint64_t blk = uint64_t blk =
@ -152,22 +141,7 @@ void TextureCompression::Rdo( char* data, size_t blocks )
{ {
const int maxChan23 = max3( r0-2, g0, b0-5 ); const int maxChan23 = max3( r0-2, g0, b0-5 );
const int maxDelta23 = max3( dr-2, dg, db-5 ); const int maxDelta23 = max3( dr-2, dg, db-5 );
const int tr2a = 32; const int tr2 = TrTbl2[maxChan23 / 16];
const int tr2b = 48;
int tr2 = 0;
if( maxChan23 < tr2a )
{
tr2 = 12;
}
else if( maxChan23 < tr2b )
{
tr2 = 6;
}
else
{
tr2 = 3;
}
if( maxDelta23 <= tr2 ) if( maxDelta23 <= tr2 )
{ {
idx &= 0x55555555; idx &= 0x55555555;
@ -175,22 +149,7 @@ void TextureCompression::Rdo( char* data, size_t blocks )
} }
else else
{ {
const int tr3a = 48; const int tr3 = TrTbl3[maxChan23 / 16];
const int tr3b = 64;
int tr3;
if( maxChan23 < tr3a )
{
tr3 = 48;
}
else if( maxChan23 < tr3b )
{
tr3 = 32;
}
else
{
tr3 = 24;
}
if( maxDelta23 <= tr3 ) if( maxDelta23 <= tr3 )
{ {
uint64_t c = c1 | ( uint64_t( c0 ) << 16 ); uint64_t c = c1 | ( uint64_t( c0 ) << 16 );