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RenderDll/Common/Textures/dxtlib.h
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RenderDll/Common/Textures/dxtlib.h
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/****************************************************************************************
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Copyright (C) NVIDIA Corporation 2003
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TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, THIS SOFTWARE IS PROVIDED
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*AS IS* AND NVIDIA AND ITS SUPPLIERS DISCLAIM ALL WARRANTIES, EITHER EXPRESS
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OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY
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AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL NVIDIA OR ITS SUPPLIERS
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BE LIABLE FOR ANY SPECIAL, INCIDENTAL, INDIRECT, OR CONSEQUENTIAL DAMAGES
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WHATSOEVER (INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF BUSINESS PROFITS,
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BUSINESS INTERRUPTION, LOSS OF BUSINESS INFORMATION, OR ANY OTHER PECUNIARY LOSS)
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ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF NVIDIA HAS
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BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
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*****************************************************************************************/
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#pragma once
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#include "nvdxt_options.h"
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typedef void (*MIPFiltercallback)(int miplevel, int TotalMIPs);
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typedef HRESULT (*MIPcallback)(void * data, int miplevel, DWORD size, int width, int height, void * user_data);
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void set_mip_filter_callback(MIPFiltercallback callback);
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// call back
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// pointer to data
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// mip level
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// size of chunk
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#ifndef TRGBA
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#define TRGBA
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typedef struct
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{
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BYTE rgba[4];
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} rgba_t;
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#endif
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#ifndef TPIXEL
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#define TPIXEL
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union tPixel
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{
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unsigned long u;
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rgba_t c;
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};
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#endif
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#ifndef ISPOWER2
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inline bool IsPower2(unsigned int x)
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{
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if ( x < 1 )
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return false;
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if (x == 1)
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return true;
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if ( x & (x-1) )
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return false;
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return true;
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}
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#define ISPOWER2
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#endif
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/*
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Compresses an image with a user supplied callback with the data for each MIP level created
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Only supports input of RGB 24 or ARGB 32 bpp
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*/
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#ifdef NVDXTC
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extern "C" {
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#endif
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HRESULT nvDXTcompress(unsigned char * raw_data, // pointer to data (24 or 32 bit)
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unsigned long w, // width in texels
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unsigned long h, // height in texels
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DWORD byte_pitch,
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CompressionOptions * options,
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DWORD planes, // 3 or 4
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MIPcallback callback = NULL, // callback for generated levels
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RECT * rect = NULL); // subrect to operate on, NULL is whole image
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#ifdef NVDXTC
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}
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#endif
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// if callback is == 0 (or not specified), then WriteDTXnFile is called with all file info
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//
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// You must write the routines (or provide stubs)
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// void WriteDTXnFile(count, buffer);
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// void ReadDTXnFile(count, buffer);
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//
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//
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#ifdef NVDXTDLL
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typedef void (*DXTDataTransfer)(DWORD count, void *buffer);
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#ifdef NVDXTC
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extern "C" {
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#endif
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void SetReadDTXnFile(DXTDataTransfer UserReadDTXnFile);
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void SetWriteDTXnFile(DXTDataTransfer UserWriteDTXnFile);
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#ifdef NVDXTC
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}
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#endif
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#else
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void WriteDTXnFile(DWORD count, void * buffer, void * userData);
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void ReadDTXnFile(DWORD count, void * buffer, void * userData);
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#endif // NVDXTC
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#define DXTERR_INPUT_POINTER_ZERO -1
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#define DXTERR_DEPTH_IS_NOT_3_OR_4 -2
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#define DXTERR_NON_POWER_2 -3
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/* example
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LPDIRECT3DTEXTURE8 pCurrentTexture = 0;
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HRESULT LoadAllMipSurfaces(void * data, int iLevel)
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{
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HRESULT hr;
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LPDIRECT3DSURFACE8 psurf;
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D3DSURFACE_DESC sd;
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D3DLOCKED_RECT lr;
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hr = pCurrentTexture->GetSurfaceLevel(iLevel, &psurf);
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if (FAILED(hr))
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return hr;
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psurf->GetDesc(&sd);
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hr = pCurrentTexture->LockRect(iLevel, &lr, NULL, 0);
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if (FAILED(hr))
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return hr;
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memcpy(lr.pBits, data, sd.Size);
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hr = pCurrentTexture->UnlockRect(iLevel);
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ReleasePpo(&psurf);
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return 0;
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}
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hr = D3DXCreateTexture(m_pd3dDevice, Width, Height, nMips, 0, D3DFMT_DXT3, D3DPOOL_MANAGED, &pCurrentTexture);
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nvDXTcompress(raw_data, Width, Height, DXT3, true, 4, LoadAllMipSurfaces, NULL);
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*/
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/*
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src_format
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dDXT1
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dDXT1a // DXT1 with one bit alpha
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dDXT3 // explicit alpha
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dDXT5 // interpolated alpha
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d4444 // a4 r4 g4 b4
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d1555 // a1 r5 g5 b5
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d565 // a0 r5 g6 b5
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d8888 // a8 r8 g8 b8
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d888 // a0 r8 g8 b8
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d555 // a0 r5 g5 b5
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d8 // paletted
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dV8U8 // DuDv
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dCxV8U8 // normal map
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dA8 // A8
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*/
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#ifdef NVDXTC
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extern "C" {
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#endif
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/*
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SpecifiedMipMaps, number of MIP maps to load. 0 is all
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*/
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unsigned char * nvDXTdecompress(int & w, int & h, int & depth, int & total_width, int & rowBytes, int & src_format,
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int SpecifiedMipMaps = 0);
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#ifdef NVDXTC
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}
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#endif
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#ifndef COLOR_FORMAT_ENUM
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#define COLOR_FORMAT_ENUM
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enum ColorFormat
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{
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COLOR_RGB,
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COLOR_ARGB,
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COLOR_BGR,
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COLOR_BGRA,
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COLOR_RGBA,
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COLOR_ABGR,
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};
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#endif
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