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