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88 lines
2.4 KiB
88 lines
2.4 KiB
5 years ago
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//========= Copyright Valve Corporation, All rights reserved. ============//
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/*
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* Copyright (c) 1997-8 S3 Inc. All Rights Reserved.
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*
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* Module Name: s3_intrf.h
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*
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* Purpose: Constant, structure, and prototype definitions for S3TC
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* interface to DX surface
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*
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* Author: Dan Hung, Martin Hoffesommer
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*
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* Revision History:
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* version Beta 1.00.00-98-03-26
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*/
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// Highlevel interface
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#ifndef NVTC_H
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#define NVTC_H
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#if defined( _WIN32 ) && !defined( _X360 )
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#include <ddraw.h>
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#endif
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// RGB encoding types
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#define S3TC_ENCODE_RGB_FULL 0x0
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#define S3TC_ENCODE_RGB_COLOR_KEY 0x1
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#define S3TC_ENCODE_RGB_ALPHA_COMPARE 0x2
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#define _S3TC_ENCODE_RGB_MASK 0xff
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// alpha encoding types
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#define S3TC_ENCODE_ALPHA_NONE 0x000
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#define S3TC_ENCODE_ALPHA_EXPLICIT 0x100
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#define S3TC_ENCODE_ALPHA_INTERPOLATED 0x200
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#define _S3TC_ENCODE_ALPHA_MASK 0xff00
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#if defined( _WIN32 ) && !defined( _X360 )
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// common encoding types
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//@@@TBD
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// error codes
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#define ERROR_ABORTED -1
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// Progress Callback for S3TCencode
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typedef BOOL (* LP_S3TC_PROGRESS_CALLBACK)(float fProgress, LPVOID lpUser1, LPVOID lpUser2);
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// set alpha reference value for alpha compare encoding
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void S3TCsetAlphaReference(int nRef);
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// determine number of bytes needed to compress given source image
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unsigned int S3TCgetEncodeSize(DDSURFACEDESC *lpDesc, // [in]
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unsigned int dwEncodeType // [in]
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);
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// encode (compress) given source image to given destination surface
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void S3TCencode(DDSURFACEDESC *lpSrc, // [in]
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PALETTEENTRY *lpPal, // [in], may be NULL
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DDSURFACEDESC *lpDest, // [out]
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void *lpDestBuf, // [in]
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unsigned int dwEncodeType, // [in]
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float *weight // [in]
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);
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int S3TCencodeEx(DDSURFACEDESC *lpSrc, // [in]
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PALETTEENTRY *lpPal, // [in], may be NULL
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DDSURFACEDESC *lpDest, // [out]
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void *lpDestBuf, // [in]
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unsigned int dwEncodeType, // [in]
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float *weight, // [in]
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LP_S3TC_PROGRESS_CALLBACK lpS3TCProgressProc, // [in], may be NULL
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LPVOID lpArg1, // in
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LPVOID lpArg2 // in
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);
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// determine number of bytes needed do decompress given compressed image
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unsigned int S3TCgetDecodeSize(DDSURFACEDESC *lpDesc);
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// decode (decompress) to ARGB8888
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void S3TCdecode(DDSURFACEDESC *lpSrc, // [in]
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DDSURFACEDESC *lpDest, // [out]
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void *lpDestBuf // [in]
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);
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#endif // _WIN32
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#endif // NVTC_H
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