30 lines
785 B
C++
30 lines
785 B
C++
|
// File: ryg_dxt.hpp
|
||
|
|
#pragma once
|
||
|
|
|
||
|
|
#include "crn_ryg_types.hpp"
|
||
|
|
|
||
|
|
namespace ryg_dxt
|
||
|
|
{
|
||
|
|
extern sU8 Expand5[32];
|
||
|
|
extern sU8 Expand6[64];
|
||
|
|
extern sU8 OMatch5[256][2];
|
||
|
|
extern sU8 OMatch6[256][2];
|
||
|
|
extern sU8 OMatch5_3[256][2];
|
||
|
|
extern sU8 OMatch6_3[256][2];
|
||
|
|
extern sU8 QuantRBTab[256+16];
|
||
|
|
extern sU8 QuantGTab[256+16];
|
||
|
|
|
||
|
|
// initialize DXT codec. only needs to be called once.
|
||
|
|
void sInitDXT();
|
||
|
|
|
||
|
|
// input: a 4x4 pixel block, A8R8G8B8. you need to handle boundary cases
|
||
|
|
// yourself.
|
||
|
|
// alpha=sTRUE => use DXT5 (else use DXT1)
|
||
|
|
// quality: 0=fastest (no dither), 1=medium (dither)
|
||
|
|
void sCompressDXTBlock(sU8 *dest,const sU32 *src,sBool alpha,sInt quality);
|
||
|
|
|
||
|
|
void sCompressDXT5ABlock(sU8 *dest,const sU32 *src,sInt quality);
|
||
|
|
|
||
|
|
} // namespace ryg_dxt
|
||
|
|
|