575 lines
17 KiB
C++
575 lines
17 KiB
C++
//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose:
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//
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//===========================================================================//
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#ifndef IMAGEFORMAT_H
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#define IMAGEFORMAT_H
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#ifdef _WIN32
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#pragma once
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#endif
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#include <stdio.h>
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enum NormalDecodeMode_t
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{
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NORMAL_DECODE_NONE = 0
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};
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// Forward declaration
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#ifdef _WIN32
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typedef enum _D3DFORMAT D3DFORMAT;
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#endif
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//-----------------------------------------------------------------------------
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// The various image format types
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//-----------------------------------------------------------------------------
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// don't bitch that inline functions aren't used!!!!
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#pragma warning(disable : 4514)
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enum ImageFormat
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{
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IMAGE_FORMAT_UNKNOWN = -1,
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IMAGE_FORMAT_RGBA8888 = 0,
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IMAGE_FORMAT_ABGR8888,
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IMAGE_FORMAT_RGB888,
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IMAGE_FORMAT_BGR888,
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IMAGE_FORMAT_RGB565,
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IMAGE_FORMAT_I8,
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IMAGE_FORMAT_IA88,
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IMAGE_FORMAT_P8,
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IMAGE_FORMAT_A8,
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IMAGE_FORMAT_RGB888_BLUESCREEN,
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IMAGE_FORMAT_BGR888_BLUESCREEN,
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IMAGE_FORMAT_ARGB8888,
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IMAGE_FORMAT_BGRA8888,
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IMAGE_FORMAT_DXT1,
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IMAGE_FORMAT_DXT3,
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IMAGE_FORMAT_DXT5,
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IMAGE_FORMAT_BGRX8888,
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IMAGE_FORMAT_BGR565,
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IMAGE_FORMAT_BGRX5551,
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IMAGE_FORMAT_BGRA4444,
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IMAGE_FORMAT_DXT1_ONEBITALPHA,
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IMAGE_FORMAT_BGRA5551,
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IMAGE_FORMAT_UV88,
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IMAGE_FORMAT_UVWQ8888,
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IMAGE_FORMAT_RGBA16161616F,
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IMAGE_FORMAT_RGBA16161616,
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IMAGE_FORMAT_UVLX8888,
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IMAGE_FORMAT_R32F, // Single-channel 32-bit floating point
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IMAGE_FORMAT_RGB323232F,
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IMAGE_FORMAT_RGBA32323232F,
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// Depth-stencil texture formats for shadow depth mapping
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IMAGE_FORMAT_NV_DST16, //
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IMAGE_FORMAT_NV_DST24, //
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IMAGE_FORMAT_NV_INTZ, // Vendor-specific depth-stencil texture
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IMAGE_FORMAT_NV_RAWZ, // formats for shadow depth mapping
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IMAGE_FORMAT_ATI_DST16, //
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IMAGE_FORMAT_ATI_DST24, //
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IMAGE_FORMAT_NV_NULL, // Dummy format which takes no video memory
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// Compressed normal map formats
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IMAGE_FORMAT_ATI2N, // One-surface ATI2N / DXN format
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IMAGE_FORMAT_ATI1N, // Two-surface ATI1N format
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#if defined( _X360 )
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// Depth-stencil texture formats
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IMAGE_FORMAT_X360_DST16,
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IMAGE_FORMAT_X360_DST24,
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IMAGE_FORMAT_X360_DST24F,
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// supporting these specific formats as non-tiled for procedural cpu access
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IMAGE_FORMAT_LINEAR_BGRX8888,
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IMAGE_FORMAT_LINEAR_RGBA8888,
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IMAGE_FORMAT_LINEAR_ABGR8888,
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IMAGE_FORMAT_LINEAR_ARGB8888,
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IMAGE_FORMAT_LINEAR_BGRA8888,
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IMAGE_FORMAT_LINEAR_RGB888,
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IMAGE_FORMAT_LINEAR_BGR888,
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IMAGE_FORMAT_LINEAR_BGRX5551,
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IMAGE_FORMAT_LINEAR_I8,
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IMAGE_FORMAT_LINEAR_RGBA16161616,
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IMAGE_FORMAT_LE_BGRX8888,
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IMAGE_FORMAT_LE_BGRA8888,
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#endif
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IMAGE_FORMAT_DXT1_RUNTIME,
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IMAGE_FORMAT_DXT5_RUNTIME,
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NUM_IMAGE_FORMATS
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};
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#if defined( POSIX ) || defined( DX_TO_GL_ABSTRACTION )
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typedef enum _D3DFORMAT
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{
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D3DFMT_INDEX16,
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D3DFMT_D16,
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D3DFMT_D24S8,
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D3DFMT_A8R8G8B8,
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D3DFMT_A4R4G4B4,
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D3DFMT_X8R8G8B8,
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D3DFMT_R5G6R5,
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D3DFMT_X1R5G5B5,
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D3DFMT_A1R5G5B5,
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D3DFMT_L8,
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D3DFMT_A8L8,
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D3DFMT_A,
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D3DFMT_DXT1,
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D3DFMT_DXT3,
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D3DFMT_DXT5,
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D3DFMT_V8U8,
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D3DFMT_Q8W8V8U8,
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D3DFMT_X8L8V8U8,
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D3DFMT_A16B16G16R16F,
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D3DFMT_A16B16G16R16,
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D3DFMT_R32F,
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D3DFMT_A32B32G32R32F,
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D3DFMT_R8G8B8,
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D3DFMT_D24X4S4,
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D3DFMT_A8,
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D3DFMT_R5G6B5,
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D3DFMT_D15S1,
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D3DFMT_D24X8,
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D3DFMT_VERTEXDATA,
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D3DFMT_INDEX32,
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// adding fake D3D format names for the vendor specific ones (eases debugging/logging)
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// NV shadow depth tex
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D3DFMT_NV_INTZ = 0x5a544e49, // MAKEFOURCC('I','N','T','Z')
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D3DFMT_NV_RAWZ = 0x5a574152, // MAKEFOURCC('R','A','W','Z')
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// NV null tex
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D3DFMT_NV_NULL = 0x4c4c554e, // MAKEFOURCC('N','U','L','L')
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// ATI shadow depth tex
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D3DFMT_ATI_D16 = 0x36314644, // MAKEFOURCC('D','F','1','6')
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D3DFMT_ATI_D24S8 = 0x34324644, // MAKEFOURCC('D','F','2','4')
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// ATI 1N and 2N compressed tex
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D3DFMT_ATI_2N = 0x32495441, // MAKEFOURCC('A', 'T', 'I', '2')
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D3DFMT_ATI_1N = 0x31495441, // MAKEFOURCC('A', 'T', 'I', '1')
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D3DFMT_UNKNOWN
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} D3DFORMAT;
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#endif
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//-----------------------------------------------------------------------------
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// Color structures
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//-----------------------------------------------------------------------------
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struct BGRA8888_t;
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struct BGRX8888_t;
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struct RGBA8888_t;
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struct RGB888_t;
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struct BGR888_t;
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struct BGR565_t;
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struct BGRA5551_t;
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struct BGRA4444_t;
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struct RGBX5551_t;
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struct BGRA8888_t
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{
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unsigned char b; // change the order of names to change the
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unsigned char g; // order of the output ARGB or BGRA, etc...
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unsigned char r; // Last one is MSB, 1st is LSB.
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unsigned char a;
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inline BGRA8888_t& operator=( const BGRA8888_t& in )
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{
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*( unsigned int * )this = *( unsigned int * )∈
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return *this;
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}
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};
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struct BGRX8888_t
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{
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unsigned char b; // change the order of names to change the
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unsigned char g; // order of the output ARGB or BGRA, etc...
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unsigned char r; // Last one is MSB, 1st is LSB.
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unsigned char x;
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inline BGRX8888_t& operator=( const BGRX8888_t& in )
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{
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*( unsigned int * )this = *( unsigned int * ) ∈
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return *this;
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}
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};
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struct RGBA8888_t
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{
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unsigned char r; // change the order of names to change the
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unsigned char g; // order of the output ARGB or BGRA, etc...
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unsigned char b; // Last one is MSB, 1st is LSB.
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unsigned char a;
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inline RGBA8888_t& operator=( const BGRA8888_t& in );
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inline RGBA8888_t& operator=( const RGB888_t& in );
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inline RGBA8888_t& operator=( const BGRX8888_t& in );
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};
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struct RGB888_t
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{
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unsigned char r;
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unsigned char g;
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unsigned char b;
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inline RGB888_t& operator=( const BGRA8888_t& in )
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{
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r = in.r;
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g = in.g;
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b = in.b;
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return *this;
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}
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inline bool operator==( const RGB888_t& in ) const
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{
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return ( r == in.r ) && ( g == in.g ) && ( b == in.b );
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}
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inline bool operator!=( const RGB888_t& in ) const
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{
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return ( r != in.r ) || ( g != in.g ) || ( b != in.b );
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}
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};
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struct BGR888_t
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{
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unsigned char b;
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unsigned char g;
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unsigned char r;
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inline BGR888_t& operator=( const BGRA8888_t& in )
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{
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r = in.r;
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g = in.g;
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b = in.b;
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return *this;
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}
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};
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// 360 uses this structure for x86 dxt decoding
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#if defined( _X360 )
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#pragma bitfield_order( push, lsb_to_msb )
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#endif
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struct BGR565_t
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{
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unsigned short b : 5; // order of names changes
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unsigned short g : 6; // byte order of output to 32 bit
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unsigned short r : 5;
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inline BGR565_t& operator=( const BGRA8888_t& in )
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{
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r = in.r >> 3;
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g = in.g >> 2;
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b = in.b >> 3;
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return *this;
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}
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inline BGR565_t &Set( int red, int green, int blue )
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{
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r = red >> 3;
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g = green >> 2;
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b = blue >> 3;
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return *this;
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}
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};
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#if defined( _X360 )
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#pragma bitfield_order( pop )
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#endif
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struct BGRA5551_t
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{
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unsigned short b : 5; // order of names changes
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unsigned short g : 5; // byte order of output to 32 bit
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unsigned short r : 5;
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unsigned short a : 1;
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inline BGRA5551_t& operator=( const BGRA8888_t& in )
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{
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r = in.r >> 3;
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g = in.g >> 3;
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b = in.b >> 3;
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a = in.a >> 7;
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return *this;
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}
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};
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struct BGRA4444_t
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{
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unsigned short b : 4; // order of names changes
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unsigned short g : 4; // byte order of output to 32 bit
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unsigned short r : 4;
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unsigned short a : 4;
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inline BGRA4444_t& operator=( const BGRA8888_t& in )
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{
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r = in.r >> 4;
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g = in.g >> 4;
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b = in.b >> 4;
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a = in.a >> 4;
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return *this;
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}
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};
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struct RGBX5551_t
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{
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unsigned short r : 5;
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unsigned short g : 5;
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unsigned short b : 5;
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unsigned short x : 1;
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inline RGBX5551_t& operator=( const BGRA8888_t& in )
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{
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r = in.r >> 3;
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g = in.g >> 3;
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b = in.b >> 3;
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return *this;
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}
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};
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//-----------------------------------------------------------------------------
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// Conversion assignments
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//-----------------------------------------------------------------------------
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RGBA8888_t& RGBA8888_t::operator=( const BGRA8888_t& in )
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{
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r = in.r;
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g = in.g;
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b = in.b;
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a = in.a;
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return *this;
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}
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RGBA8888_t& RGBA8888_t::operator=( const RGB888_t& in )
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{
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r = in.r;
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g = in.g;
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b = in.b;
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a = 0xFF;
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return *this;
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}
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RGBA8888_t& RGBA8888_t::operator=( const BGRX8888_t& in )
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{
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r = in.r;
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g = in.g;
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b = in.b;
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a = 0xFF;
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return *this;
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}
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//-----------------------------------------------------------------------------
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// some important constants
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//-----------------------------------------------------------------------------
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#define ARTWORK_GAMMA ( 2.2f )
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#define IMAGE_MAX_DIM ( 2048 )
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//-----------------------------------------------------------------------------
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// information about each image format
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//-----------------------------------------------------------------------------
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struct ImageFormatInfo_t
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{
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const char* m_pName;
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int m_NumBytes;
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int m_NumRedBits;
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int m_NumGreeBits;
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int m_NumBlueBits;
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int m_NumAlphaBits;
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bool m_IsCompressed;
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};
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//-----------------------------------------------------------------------------
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// Various methods related to pixelmaps and color formats
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//-----------------------------------------------------------------------------
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namespace ImageLoader
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{
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bool GetInfo( const char *fileName, int *width, int *height, enum ImageFormat *imageFormat, float *sourceGamma );
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int GetMemRequired( int width, int height, int depth, ImageFormat imageFormat, bool mipmap );
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int GetMipMapLevelByteOffset( int width, int height, enum ImageFormat imageFormat, int skipMipLevels );
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void GetMipMapLevelDimensions( int *width, int *height, int skipMipLevels );
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int GetNumMipMapLevels( int width, int height, int depth = 1 );
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bool Load( unsigned char *imageData, const char *fileName, int width, int height, enum ImageFormat imageFormat, float targetGamma, bool mipmap );
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bool Load( unsigned char *imageData, FILE *fp, int width, int height,
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enum ImageFormat imageFormat, float targetGamma, bool mipmap );
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// convert from any image format to any other image format.
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// return false if the conversion cannot be performed.
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// Strides denote the number of bytes per each line,
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// by default assumes width * # of bytes per pixel
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bool ConvertImageFormat( const unsigned char *src, enum ImageFormat srcImageFormat,
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unsigned char *dst, enum ImageFormat dstImageFormat,
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int width, int height, int srcStride = 0, int dstStride = 0 );
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// must be used in conjunction with ConvertImageFormat() to pre-swap and post-swap
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void PreConvertSwapImageData( unsigned char *pImageData, int nImageSize, ImageFormat imageFormat, int width = 0, int stride = 0 );
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void PostConvertSwapImageData( unsigned char *pImageData, int nImageSize, ImageFormat imageFormat, int width = 0, int stride = 0 );
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void ByteSwapImageData( unsigned char *pImageData, int nImageSize, ImageFormat imageFormat, int width = 0, int stride = 0 );
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bool IsFormatValidForConversion( ImageFormat fmt );
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//-----------------------------------------------------------------------------
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// convert back and forth from D3D format to ImageFormat, regardless of
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// whether it's supported or not
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//-----------------------------------------------------------------------------
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ImageFormat D3DFormatToImageFormat( D3DFORMAT format );
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D3DFORMAT ImageFormatToD3DFormat( ImageFormat format );
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// Flags for ResampleRGBA8888
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enum
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{
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RESAMPLE_NORMALMAP = 0x1,
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RESAMPLE_ALPHATEST = 0x2,
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RESAMPLE_NICE_FILTER = 0x4,
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RESAMPLE_CLAMPS = 0x8,
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RESAMPLE_CLAMPT = 0x10,
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RESAMPLE_CLAMPU = 0x20,
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};
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struct ResampleInfo_t
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{
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ResampleInfo_t() : m_nFlags(0), m_flAlphaThreshhold(0.4f), m_flAlphaHiFreqThreshhold(0.4f), m_nSrcDepth(1), m_nDestDepth(1)
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{
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m_flColorScale[0] = 1.0f, m_flColorScale[1] = 1.0f, m_flColorScale[2] = 1.0f, m_flColorScale[3] = 1.0f;
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m_flColorGoal[0] = 0.0f, m_flColorGoal[1] = 0.0f, m_flColorGoal[2] = 0.0f, m_flColorGoal[3] = 0.0f;
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}
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unsigned char *m_pSrc;
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unsigned char *m_pDest;
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int m_nSrcWidth;
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int m_nSrcHeight;
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int m_nSrcDepth;
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int m_nDestWidth;
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int m_nDestHeight;
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int m_nDestDepth;
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float m_flSrcGamma;
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float m_flDestGamma;
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float m_flColorScale[4]; // Color scale factors RGBA
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float m_flColorGoal[4]; // Color goal values RGBA DestColor = ColorGoal + scale * (SrcColor - ColorGoal)
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float m_flAlphaThreshhold;
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float m_flAlphaHiFreqThreshhold;
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int m_nFlags;
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};
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bool ResampleRGBA8888( const ResampleInfo_t &info );
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bool ResampleRGBA16161616( const ResampleInfo_t &info );
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bool ResampleRGB323232F( const ResampleInfo_t &info );
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void ConvertNormalMapRGBA8888ToDUDVMapUVLX8888( const unsigned char *src, int width, int height,
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unsigned char *dst_ );
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void ConvertNormalMapRGBA8888ToDUDVMapUVWQ8888( const unsigned char *src, int width, int height,
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unsigned char *dst_ );
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void ConvertNormalMapRGBA8888ToDUDVMapUV88( const unsigned char *src, int width, int height,
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unsigned char *dst_ );
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void ConvertIA88ImageToNormalMapRGBA8888( const unsigned char *src, int width,
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int height, unsigned char *dst,
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float bumpScale );
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void NormalizeNormalMapRGBA8888( unsigned char *src, int numTexels );
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//-----------------------------------------------------------------------------
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// Gamma correction
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//-----------------------------------------------------------------------------
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void GammaCorrectRGBA8888( unsigned char *src, unsigned char* dst,
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int width, int height, int depth, float srcGamma, float dstGamma );
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//-----------------------------------------------------------------------------
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// Makes a gamma table
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//-----------------------------------------------------------------------------
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void ConstructGammaTable( unsigned char* pTable, float srcGamma, float dstGamma );
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//-----------------------------------------------------------------------------
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// Gamma corrects using a previously constructed gamma table
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//-----------------------------------------------------------------------------
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void GammaCorrectRGBA8888( unsigned char* pSrc, unsigned char* pDst,
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int width, int height, int depth, unsigned char* pGammaTable );
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//-----------------------------------------------------------------------------
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// Generates a number of mipmap levels
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//-----------------------------------------------------------------------------
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void GenerateMipmapLevels( unsigned char* pSrc, unsigned char* pDst, int width,
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int height, int depth, ImageFormat imageFormat, float srcGamma, float dstGamma,
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int numLevels = 0 );
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// Low quality mipmap generation, but way faster.
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void GenerateMipmapLevelsLQ( unsigned char* pSrc, unsigned char* pDst, int width, int height,
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ImageFormat imageFormat, int numLevels );
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//-----------------------------------------------------------------------------
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// operations on square images (src and dst can be the same)
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//-----------------------------------------------------------------------------
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bool RotateImageLeft( const unsigned char *src, unsigned char *dst,
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int widthHeight, ImageFormat imageFormat );
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bool RotateImage180( const unsigned char *src, unsigned char *dst,
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int widthHeight, ImageFormat imageFormat );
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bool FlipImageVertically( void *pSrc, void *pDst, int nWidth, int nHeight, ImageFormat imageFormat, int nDstStride = 0 );
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bool FlipImageHorizontally( void *pSrc, void *pDst, int nWidth, int nHeight, ImageFormat imageFormat, int nDstStride = 0 );
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bool SwapAxes( unsigned char *src,
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int widthHeight, ImageFormat imageFormat );
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|
|
|
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//-----------------------------------------------------------------------------
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|
// Returns info about each image format
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|
//-----------------------------------------------------------------------------
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|
ImageFormatInfo_t const& ImageFormatInfo( ImageFormat fmt );
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|
|
|
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|
//-----------------------------------------------------------------------------
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|
// Gets the name of the image format
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|
//-----------------------------------------------------------------------------
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|
inline char const* GetName( ImageFormat fmt )
|
|
{
|
|
return ImageFormatInfo(fmt).m_pName;
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|
}
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|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Gets the size of the image format in bytes
|
|
//-----------------------------------------------------------------------------
|
|
inline int SizeInBytes( ImageFormat fmt )
|
|
{
|
|
return ImageFormatInfo(fmt).m_NumBytes;
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Does the image format support transparency?
|
|
//-----------------------------------------------------------------------------
|
|
inline bool IsTransparent( ImageFormat fmt )
|
|
{
|
|
return ImageFormatInfo(fmt).m_NumAlphaBits > 0;
|
|
}
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Is the image format compressed?
|
|
//-----------------------------------------------------------------------------
|
|
inline bool IsCompressed( ImageFormat fmt )
|
|
{
|
|
return ImageFormatInfo(fmt).m_IsCompressed;
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Is any channel > 8 bits?
|
|
//-----------------------------------------------------------------------------
|
|
inline bool HasChannelLargerThan8Bits( ImageFormat fmt )
|
|
{
|
|
ImageFormatInfo_t info = ImageFormatInfo(fmt);
|
|
return ( info.m_NumRedBits > 8 || info.m_NumGreeBits > 8 || info.m_NumBlueBits > 8 || info.m_NumAlphaBits > 8 );
|
|
}
|
|
|
|
inline bool IsRuntimeCompressed( ImageFormat fmt )
|
|
{
|
|
return ( fmt == IMAGE_FORMAT_DXT1_RUNTIME ) || ( fmt == IMAGE_FORMAT_DXT5_RUNTIME );
|
|
}
|
|
|
|
} // end namespace ImageLoader
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|
|
|
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|
#endif // IMAGEFORMAT_H
|