Hi again Robert,
[Patch against trunk rev. 13081]
This patch adds vertical flipping to the writer depending on the
Image::getOrigin() value. To skip this behaviour, the "ddsNoAutoFlipWrite"
option was added.
Correct me if I'm wrong, but it seems most images will not be flipped as they
are rarely "Image::BOTTOM_LEFT", hence the fact that the default behaviour is
to read the image orientation (= the option is not "ddsAutoFlipWrite" but
"ddsNoAutoFlipWrite").
I also moved a few lines of code about "dds_flip" option, and made options
reading more like in other ReaderWriters.
Cheers,
Sukender
/**********************************************************************
*
* FILE: ReaderWriterdds.cpp
*
* DESCRIPTION: Class for reading a DDS file into an osg::Image.
*
* Example on reading a DDS file code can be found at:
* http://developer.nvidia.com/docs/IO/1327/ATT/
* ARB_texture_compression.pdf
* Author: Sebastien Domine, NVIDIA Corporation
*
* CREATED BY: Rune Schmidt Jensen, rsj@uni-dk
*
* HISTORY: Created 31.03.2003
* Modified 13.05.2004
* by George Tarantilis, [email protected]
* Modified 22.05.2009
* Wojtek Lewandowski, [email protected]
*
* WARNING:
* Bit Masks in the WrtiteDDS are set for 8 bit components
* write with 4 or 16 bit components will
* probably produce corrupted file
* Wojtek Lewandowski 2009-05-22
*
**********************************************************************/
#include <osg/Texture>
#include <osg/Notify>
#include <osgDB/Registry>
#include <osgDB/FileNameUtils>
#include <osgDB/FileUtils>
#include <osgDB/fstream>
#include <iomanip>
#include <stdio.h>
#include <string.h>
#if defined(OSG_GLES1_AVAILABLE) || defined(OSG_GLES2_AVAILABLE)
#define GL_RED 0x1903
#define GL_LUMINANCE4_ALPHA4 0x8043
#endif
#if defined(OSG_GL3_AVAILABLE)
#define GL_LUMINANCE4_ALPHA4 0x8043
#endif
// NOTICE ON WIN32:
// typedef DWORD unsigned long;
// sizeof(DWORD) = 4
typedef unsigned int UI32;
typedef int I32;
struct DDCOLORKEY
{
DDCOLORKEY():
dwColorSpaceLowValue(0),
dwColorSpaceHighValue(0) {}
UI32 dwColorSpaceLowValue;
UI32 dwColorSpaceHighValue;
};
struct DDPIXELFORMAT
{
DDPIXELFORMAT():
dwSize(0),
dwFlags(0),
dwFourCC(0),
dwRGBBitCount(0),
dwRBitMask(0),
dwGBitMask(0),
dwBBitMask(0),
dwRGBAlphaBitMask(0) {}
UI32 dwSize;
UI32 dwFlags;
UI32 dwFourCC;
union
{
UI32 dwRGBBitCount;
UI32 dwYUVBitCount;
UI32 dwZBufferBitDepth;
UI32 dwAlphaBitDepth;
UI32 dwLuminanceBitDepth;
};
union
{
UI32 dwRBitMask;
UI32 dwYBitMask;
};
union
{
UI32 dwGBitMask;
UI32 dwUBitMask;
};
union
{
UI32 dwBBitMask;
UI32 dwVBitMask;
};
union
{
UI32 dwRGBAlphaBitMask;
UI32 dwYUVAlphaBitMask;
UI32 dwRGBZBitMask;
UI32 dwYUVZBitMask;
};
};
struct DDSCAPS2
{
DDSCAPS2():
dwCaps(0),
dwCaps2(0),
dwCaps3(0),
dwCaps4(0) {}
UI32 dwCaps;
UI32 dwCaps2;
UI32 dwCaps3;
union
{
UI32 dwCaps4;
UI32 dwVolumeDepth;
};
};
struct DDSURFACEDESC2
{
DDSURFACEDESC2():
dwSize(0),
dwFlags(0),
dwHeight(0),
dwWidth(0),
lPitch(0),
dwBackBufferCount(0),
dwMipMapCount(0),
dwAlphaBitDepth(0),
dwReserved(0),
lpSurface(0),
dwTextureStage(0) {}
UI32 dwSize;
UI32 dwFlags;
UI32 dwHeight;
UI32 dwWidth;
union
{
I32 lPitch;
UI32 dwLinearSize;
};
union
{
UI32 dwBackBufferCount;
UI32 dwDepth;
};
union
{
UI32 dwMipMapCount;
UI32 dwRefreshRate;
};
UI32 dwAlphaBitDepth;
UI32 dwReserved;
UI32 lpSurface; //Fred Marmond: removed from pointer type to UI32 for 64bits compatibility. it is unused data
DDCOLORKEY ddckCKDestOverlay;
DDCOLORKEY ddckCKDestBlt;
DDCOLORKEY ddckCKSrcOverlay;
DDCOLORKEY ddckCKSrcBlt;
DDPIXELFORMAT ddpfPixelFormat;
DDSCAPS2 ddsCaps;
UI32 dwTextureStage;
};
//
// Structure of a DXT-1 compressed texture block
// see page "Opaque and 1-Bit Alpha Textures (Direct3D 9)" on http://msdn.microsoft.com
// url at time of writing http://msdn.microsoft.com/en-us/library/bb147243(v=VS.85).aspx
//
struct DXT1TexelsBlock
{
unsigned short color_0; // colors at their
unsigned short color_1; // extreme
unsigned int texels4x4; // interpolated colors (2 bits per texel)
};
//
// DDSURFACEDESC2 flags that mark the validity of the struct data
//
#define DDSD_CAPS 0x00000001l // default
#define DDSD_HEIGHT 0x00000002l // default
#define DDSD_WIDTH 0x00000004l // default
#define DDSD_PIXELFORMAT 0x00001000l // default
#define DDSD_PITCH 0x00000008l // For uncompressed formats
#define DDSD_MIPMAPCOUNT 0x00020000l
#define DDSD_LINEARSIZE 0x00080000l // For compressed formats
#define DDSD_DEPTH 0x00800000l // Volume Textures
//
// DDPIXELFORMAT flags
//
#define DDPF_ALPHAPIXELS 0x00000001l
#define DDPF_FOURCC 0x00000004l // Compressed formats
#define DDPF_RGB 0x00000040l // Uncompressed formats
#define DDPF_ALPHA 0x00000002l
#define DDPF_COMPRESSED 0x00000080l
#define DDPF_LUMINANCE 0x00020000l
#define DDPF_BUMPLUMINANCE 0x00040000l // L,U,V
#define DDPF_BUMPDUDV 0x00080000l // U,V
//
// DDSCAPS flags
//
#define DDSCAPS_TEXTURE 0x00001000l // default
#define DDSCAPS_COMPLEX 0x00000008l
#define DDSCAPS_MIPMAP 0x00400000l
#define DDSCAPS2_VOLUME 0x00200000l
#ifndef MAKEFOURCC
#define MAKEFOURCC(ch0, ch1, ch2, ch3) \
((UI32)(char)(ch0) | ((UI32)(char)(ch1) << 8) | \
((UI32)(char)(ch2) << 16) | ((UI32)(char)(ch3) << 24 ))
#endif //defined(MAKEFOURCC)
/*
* FOURCC codes for DX compressed-texture pixel formats
*/
#define FOURCC_DXT1 (MAKEFOURCC('D','X','T','1'))
#define FOURCC_DXT2 (MAKEFOURCC('D','X','T','2'))
#define FOURCC_DXT3 (MAKEFOURCC('D','X','T','3'))
#define FOURCC_DXT4 (MAKEFOURCC('D','X','T','4'))
#define FOURCC_DXT5 (MAKEFOURCC('D','X','T','5'))
/*
* FOURCC codes for 3dc compressed-texture pixel formats
*/
#define FOURCC_ATI1 (MAKEFOURCC('A','T','I','1'))
#define FOURCC_ATI2 (MAKEFOURCC('A','T','I','2'))
static unsigned int ComputeImageSizeInBytes
( int width, int height, int depth,
unsigned int pixelFormat, unsigned int pixelType,
int packing = 1, int slice_packing = 1, int image_packing = 1 )
{
if( width < 1 ) width = 1;
if( height < 1 ) height = 1;
if( depth < 1 ) depth = 1;
// Taking advantage of the fact that
// DXT formats are defined as 4 successive numbers:
// GL_COMPRESSED_RGB_S3TC_DXT1_EXT 0x83F0
// GL_COMPRESSED_RGBA_S3TC_DXT1_EXT 0x83F1
// GL_COMPRESSED_RGBA_S3TC_DXT3_EXT 0x83F2
// GL_COMPRESSED_RGBA_S3TC_DXT5_EXT 0x83F3
if( pixelFormat >= GL_COMPRESSED_RGB_S3TC_DXT1_EXT &&
pixelFormat <= GL_COMPRESSED_RGBA_S3TC_DXT5_EXT )
{
width = (width + 3) & ~3;
height = (height + 3) & ~3;
}
// 3dc ATI formats
// GL_COMPRESSED_RED_RGTC1_EXT 0x8DBB
// GL_COMPRESSED_SIGNED_RED_RGTC1_EXT 0x8DBC
// GL_COMPRESSED_RED_GREEN_RGTC2_EXT 0x8DBD
// GL_COMPRESSED_SIGNED_RED_GREEN_RGTC2_EXT 0x8DBE
if( pixelFormat >= GL_COMPRESSED_RED_RGTC1_EXT &&
pixelFormat <= GL_COMPRESSED_SIGNED_RED_GREEN_RGTC2_EXT )
{
width = (width + 3) & ~3;
height = (height + 3) & ~3;
}
// compute size of one row
unsigned int size = osg::Image::computeRowWidthInBytes
( width, pixelFormat, pixelType, packing );
// now compute size of slice
size *= height;
size += slice_packing - 1;
size -= size % slice_packing;
// compute size of whole image
size *= depth;
size += image_packing - 1;
size -= size % image_packing;
return size;
}
osg::Image* ReadDDSFile(std::istream& _istream, bool flipDDSRead)
{
DDSURFACEDESC2 ddsd;
char filecode[4];
_istream.read(filecode, 4);
if (strncmp(filecode, "DDS ", 4) != 0) {
return NULL;
}
// Get the surface desc.
_istream.read((char*)(&ddsd), sizeof(ddsd));
osg::ref_ptr<osg::Image> osgImage = new osg::Image();
//Check valid structure sizes
if(ddsd.dwSize != 124 && ddsd.ddpfPixelFormat.dwSize != 32)
{
return NULL;
}
int depth = 1;
// Check for volume image
if( ddsd.dwDepth > 0 && (ddsd.dwFlags & DDSD_DEPTH))
{
depth = ddsd.dwDepth;
}
// Retreive image properties.
int s = ddsd.dwWidth;
int t = ddsd.dwHeight;
int r = depth;
unsigned int dataType = GL_UNSIGNED_BYTE;
unsigned int pixelFormat = 0;
unsigned int internalFormat = 0;
// Handle some esoteric formats
if(ddsd.ddpfPixelFormat.dwFlags & DDPF_BUMPDUDV)
{
OSG_WARN << "ReadDDSFile warning: DDPF_BUMPDUDV format is not supported" << std::endl;
return NULL;
// ddsd.ddpfPixelFormat.dwFlags =
// DDPF_LUMINANCE + DDPF_ALPHAPIXELS;
// // handle V8U8 as A8L8
// // handle V16U16 as A16L16
// // but Q8W8U8L8 as RGB?
// // A2W10U10V10 as RGBA (dwFlags == DDPF_BUMPDUDV + DDPF_ALPHAPIXELS)
}
if(ddsd.ddpfPixelFormat.dwFlags & DDPF_BUMPLUMINANCE)
{
OSG_WARN << "ReadDDSFile warning: DDPF_BUMPLUMINANCE format is not supported" << std::endl;
return NULL;
// ddsd.ddpfPixelFormat.dwFlags = DDPF_RGB;
// // handle as RGB
// // L6V5U5 -- 655 is not supported data type in GL
// // X8L8V8U8 -- just as RGB
}
// Uncompressed formats will usually use DDPF_RGB to indicate an RGB format,
// while compressed formats will use DDPF_FOURCC with a four-character code.
bool usingAlpha = ddsd.ddpfPixelFormat.dwFlags & DDPF_ALPHAPIXELS;
// Uncompressed formats.
if(ddsd.ddpfPixelFormat.dwFlags & DDPF_RGB)
{
struct RGBFormat
{
const char* name;
UI32 bitCount;
UI32 rBitMask;
UI32 gBitMask;
UI32 bBitMask;
UI32 aBitMask;
unsigned int internalFormat;
unsigned int pixelFormat;
unsigned int dataType;
};
const unsigned int UNSUPPORTED = 0;
static const RGBFormat rgbFormats[] =
{
{ "R3G3B2" , 8, 0xe0, 0x1c, 0x03, 0x00,
GL_RGB , GL_RGB , GL_UNSIGNED_BYTE_3_3_2 },
{ "R5G6B5" , 16, 0xf800, 0x07e0, 0x001f, 0x0000,
GL_RGB , GL_RGB , GL_UNSIGNED_SHORT_5_6_5 },
{ "A1R5G5B5" , 16, 0x7c00, 0x03e0, 0x001f, 0x8000,
GL_RGBA, GL_BGRA, GL_UNSIGNED_SHORT_1_5_5_5_REV },
{ "X1R5G5B5" , 16, 0x7c00, 0x03e0, 0x001f, 0x0000,
GL_RGB , GL_BGRA, GL_UNSIGNED_SHORT_1_5_5_5_REV },
{ "A4R4G4B4" , 16, 0x0f00, 0x00f0, 0x000f, 0xf000,
GL_RGBA, GL_BGRA, GL_UNSIGNED_SHORT_4_4_4_4_REV },
{ "X4R4G4B4" , 16, 0x0f00, 0x00f0, 0x000f, 0x0000,
GL_RGB , GL_BGRA, GL_UNSIGNED_SHORT_4_4_4_4_REV },
{ "A8R3G3B2" , 16, 0x00e0, 0x001c, 0x0003, 0xff00,
GL_RGBA, GL_BGRA, UNSUPPORTED },
{ "R8G8B8", 24, 0xff0000, 0x00ff00, 0x0000ff, 0x000000,
GL_RGB , GL_BGR , GL_UNSIGNED_BYTE },
{ "B8G8R8", 24, 0x0000ff, 0x00ff00, 0xff0000, 0x000000,
GL_RGB , GL_RGB , GL_UNSIGNED_BYTE },
{ "A8R8G8B8", 32, 0x00ff0000, 0x0000ff00, 0x000000ff, 0xff000000,
GL_RGBA, GL_BGRA, GL_UNSIGNED_BYTE },
{ "X8R8G8B8", 32, 0x00ff0000, 0x0000ff00, 0x000000ff, 0x00000000,
GL_RGB , GL_BGRA, GL_UNSIGNED_BYTE },
{ "A8B8G8R8", 32, 0x000000ff, 0x0000ff00, 0x00ff0000, 0xff000000,
GL_RGBA, GL_RGBA, GL_UNSIGNED_BYTE },
{ "X8B8G8R8", 32, 0x000000ff, 0x0000ff00, 0x00ff0000, 0x00000000,
GL_RGB , GL_RGBA, GL_UNSIGNED_BYTE },
{ "A2R10G10B10", 32, 0x000003ff, 0x000ffc00, 0x3ff00000, 0xc0000000,
GL_RGBA, GL_BGRA, GL_UNSIGNED_INT_2_10_10_10_REV },
{ "A2B10G10R10", 32, 0x3ff00000, 0x000ffc00, 0x000003ff, 0xc0000000,
GL_RGBA, GL_RGBA, GL_UNSIGNED_INT_2_10_10_10_REV },
{ "G16R16", 32, 0x0000ffff, 0xffff0000, 0x00000000, 0x00000000,
GL_RGB, UNSUPPORTED, GL_UNSIGNED_SHORT },
};
bool found = false;
for ( unsigned int i = 0; i < sizeof ( rgbFormats ) / sizeof ( RGBFormat ); i++ )
{
const RGBFormat& f = rgbFormats[ i ];
if ( ddsd.ddpfPixelFormat.dwRGBBitCount == f.bitCount &&
ddsd.ddpfPixelFormat.dwRBitMask == f.rBitMask &&
ddsd.ddpfPixelFormat.dwGBitMask == f.gBitMask &&
ddsd.ddpfPixelFormat.dwBBitMask == f.bBitMask &&
ddsd.ddpfPixelFormat.dwRGBAlphaBitMask == f.aBitMask )
{
if ( f.internalFormat != UNSUPPORTED &&
f.pixelFormat != UNSUPPORTED &&
f.dataType != UNSUPPORTED )
{
OSG_INFO << "ReadDDSFile info : format = " << f.name << std::endl;
internalFormat = f.internalFormat;
pixelFormat = f.pixelFormat;
dataType = f.dataType;
found = true;
break;
}
else
{
OSG_INFO << "ReadDDSFile info : " << f.name
<< " format is not supported" << std::endl;
return NULL;
}
}
}
if ( !found )
{
OSG_WARN << "ReadDDSFile warning: unhandled RGB pixel format in dds file, image not loaded" << std::endl;
OSG_INFO << "ReadDDSFile info : ddsd.ddpfPixelFormat.dwRGBBitCount = "
<< ddsd.ddpfPixelFormat.dwRGBBitCount << std::endl;
OSG_INFO << "ReadDDSFile info : ddsd.ddpfPixelFormat.dwRBitMask = 0x"
<< std::hex << std::setw(8) << std::setfill('0')
<< ddsd.ddpfPixelFormat.dwRBitMask << std::endl;
OSG_INFO << "ReadDDSFile info : ddsd.ddpfPixelFormat.dwGBitMask = 0x"
<< std::hex << std::setw(8) << std::setfill('0')
<< ddsd.ddpfPixelFormat.dwGBitMask << std::endl;
OSG_INFO << "ReadDDSFile info : ddsd.ddpfPixelFormat.dwBBitMask = 0x"
<< std::hex << std::setw(8) << std::setfill('0')
<< ddsd.ddpfPixelFormat.dwBBitMask << std::endl;
OSG_INFO << "ReadDDSFile info : ddsd.ddpfPixelFormat.dwRGBAlphaBitMask = 0x"
<< std::hex << std::setw(8) << std::setfill('0')
<< ddsd.ddpfPixelFormat.dwRGBAlphaBitMask << std::dec << std::endl;
return NULL;
}
}
else if(ddsd.ddpfPixelFormat.dwFlags & DDPF_LUMINANCE)
{
internalFormat = usingAlpha ? GL_LUMINANCE_ALPHA : GL_LUMINANCE;
pixelFormat = usingAlpha ? GL_LUMINANCE_ALPHA : GL_LUMINANCE;
if ( usingAlpha && ddsd.ddpfPixelFormat.dwLuminanceBitDepth == 8 )
{
OSG_INFO << "ReadDDSFile info : format = L4A4" << std::endl;
pixelFormat = GL_LUMINANCE4_ALPHA4; // invalid enumerant?
}
else if ( usingAlpha && ddsd.ddpfPixelFormat.dwLuminanceBitDepth == 32 )
{
OSG_INFO << "ReadDDSFile info : format = L16A16" << std::endl;
dataType = GL_UNSIGNED_SHORT;
}
else if ( !usingAlpha && ddsd.ddpfPixelFormat.dwLuminanceBitDepth == 16 )
{
OSG_INFO << "ReadDDSFile info : format = L16" << std::endl;
dataType = GL_UNSIGNED_SHORT;
}
else if ( usingAlpha )
{
OSG_INFO << "ReadDDSFile info : format = L8A8" << std::endl;
}
else
{
OSG_INFO << "ReadDDSFile info : format = L8" << std::endl;
}
// else if ( ddsd.ddpfPixelFormat.dwLuminanceBitDepth == (usingAlpha ? 64 : 32) )
// {
// dataType = GL_UNSIGNED_INT;
// }
}
else if(ddsd.ddpfPixelFormat.dwFlags & DDPF_ALPHA)
{
OSG_INFO << "ReadDDSFile info : format = ALPHA" << std::endl;
internalFormat = GL_ALPHA;
pixelFormat = GL_ALPHA;
}
// Compressed formats
else if(ddsd.ddpfPixelFormat.dwFlags & DDPF_FOURCC)
{
switch(ddsd.ddpfPixelFormat.dwFourCC)
{
case FOURCC_DXT1:
OSG_INFO << "ReadDDSFile info : format = DXT1, usingAlpha=" <<usingAlpha<< std::endl;
if (usingAlpha)
{
internalFormat = GL_COMPRESSED_RGBA_S3TC_DXT1_EXT;
pixelFormat = GL_COMPRESSED_RGBA_S3TC_DXT1_EXT;
}
else
{
internalFormat = GL_COMPRESSED_RGB_S3TC_DXT1_EXT;
pixelFormat = GL_COMPRESSED_RGB_S3TC_DXT1_EXT;
}
break;
case FOURCC_DXT3:
OSG_INFO << "ReadDDSFile info : format = DXT3" << std::endl;
internalFormat = GL_COMPRESSED_RGBA_S3TC_DXT3_EXT;
pixelFormat = GL_COMPRESSED_RGBA_S3TC_DXT3_EXT;
break;
case FOURCC_DXT5:
OSG_INFO << "ReadDDSFile info : format = DXT5" << std::endl;
internalFormat = GL_COMPRESSED_RGBA_S3TC_DXT5_EXT;
pixelFormat = GL_COMPRESSED_RGBA_S3TC_DXT5_EXT;
break;
case FOURCC_ATI1:
OSG_INFO << "ReadDDSFile info : format = ATI1" << std::endl;
internalFormat = GL_COMPRESSED_RED_RGTC1_EXT;
pixelFormat = GL_COMPRESSED_RED_RGTC1_EXT;
break;
case FOURCC_ATI2:
OSG_INFO << "ReadDDSFile info : format = ATI2" << std::endl;
internalFormat = GL_COMPRESSED_RED_GREEN_RGTC2_EXT;
pixelFormat = GL_COMPRESSED_RED_GREEN_RGTC2_EXT;
break;
case 0x00000024: // A16B16G16R16
OSG_INFO << "ReadDDSFile info : format = A16B16G16R16" << std::endl;
internalFormat = GL_RGBA;
pixelFormat = GL_RGBA;
dataType = GL_UNSIGNED_SHORT;
break;
case 0x00000071: // A16B16G16R16F
OSG_INFO << "ReadDDSFile info : format = A16B16G16R16F" << std::endl;
internalFormat = GL_RGBA; // why no transparency?
pixelFormat = GL_RGBA;
dataType = GL_HALF_FLOAT_NV;
break;
case 0x0000006E: // Q16W16V16U16
OSG_INFO << "ReadDDSFile info : format = Q16W16V16U16" << std::endl;
internalFormat = GL_RGBA;
pixelFormat = GL_RGBA;
dataType = GL_UNSIGNED_SHORT;
break;
case 0x00000070: // G16R16F
OSG_INFO << "ReadDDSFile info : G16R16F format is not supported"
<< std::endl;
return NULL;
// internalFormat = GL_RGB;
// pixelFormat = must be GL_RED and GL_GREEN
// dataType = GL_HALF_FLOAT_NV;
break;
case 0x00000073: // G32R32F
OSG_INFO << "ReadDDSFile info : G32R32F format is not supported"
<< std::endl;
return NULL;
// internalFormat = GL_RGB;
// pixelFormat = must be GL_RED and GL_GREEN
// dataType = GL_FLOAT;
break;
case 0x00000072: // R32F
OSG_INFO << "ReadDDSFile info : format = R32F" << std::endl;
internalFormat = GL_RGB;
pixelFormat = GL_RED;
dataType = GL_FLOAT;
break;
case 0x0000006F: // R16F
OSG_INFO << "ReadDDSFile info : format = R16F" << std::endl;
internalFormat = GL_RGB;
pixelFormat = GL_RED;
dataType = GL_HALF_FLOAT_NV;
break;
case 0x00000074: // A32B32G32R32F
OSG_INFO << "ReadDDSFile info : format = A32B32G32R32F" << std::endl;
internalFormat = GL_RGBA;
pixelFormat = GL_RGBA;
dataType = GL_FLOAT;
break;
case 0x00000075: // CxV8U8
OSG_INFO << "ReadDDSFile info : CxV8U8 format is not supported" << std::endl;
return NULL;
case MAKEFOURCC( 'U', 'Y', 'V', 'Y' ): // not supported in OSG
case MAKEFOURCC( 'U', 'Y', 'V', '2' ): // not supported in OSG
case MAKEFOURCC( 'R', 'G', 'B', 'G' ): // R8G8_B8G8 -- what is it?
case MAKEFOURCC( 'G', 'R', 'G', 'B' ): // G8R8_G8B8 -- what is it?
//break;
default:
OSG_WARN << "ReadDDSFile warning: unhandled FOURCC pixel format ("
<< (char)((ddsd.ddpfPixelFormat.dwFourCC & 0x000000ff))
<< (char)((ddsd.ddpfPixelFormat.dwFourCC & 0x0000ff00) >> 8)
<< (char)((ddsd.ddpfPixelFormat.dwFourCC & 0x00ff0000) >> 16)
<< (char)((ddsd.ddpfPixelFormat.dwFourCC & 0xff000000) >> 24)
<< " = 0x" << std::hex << std::setw(8) << std::setfill('0')
<< ddsd.ddpfPixelFormat.dwFourCC << std::dec
<< ") in dds file, image not loaded." << std::endl;
return NULL;
}
}
else
{
OSG_WARN << "ReadDDSFile warning: unhandled pixel format (ddsd.ddpfPixelFormat.dwFlags"
<< " = 0x" << std::hex << std::setw(8) << std::setfill('0')
<< ddsd.ddpfPixelFormat.dwFlags << std::dec
<< ") in dds file, image not loaded."<<std::endl;
return NULL;
}
unsigned int size = ComputeImageSizeInBytes( s, t, r, pixelFormat, dataType );
// Take care of mipmaps if any.
unsigned int sizeWithMipmaps = size;
osg::Image::MipmapDataType mipmap_offsets;
if ( ddsd.dwMipMapCount>1 )
{
unsigned numMipmaps = osg::Image::computeNumberOfMipmapLevels( s, t, r );
if( numMipmaps > ddsd.dwMipMapCount ) numMipmaps = ddsd.dwMipMapCount;
// array starts at 1 level offset, 0 level skipped
mipmap_offsets.resize( numMipmaps - 1 );
int width = s;
int height = t;
int depth = r;
for( unsigned int k = 0; k < mipmap_offsets.size(); ++k )
{
mipmap_offsets[k] = sizeWithMipmaps;
width = osg::maximum( width >> 1, 1 );
height = osg::maximum( height >> 1, 1 );
depth = osg::maximum( depth >> 1, 1 );
sizeWithMipmaps +=
ComputeImageSizeInBytes( width, height, depth, pixelFormat, dataType );
}
}
unsigned char* imageData = new unsigned char [sizeWithMipmaps];
if(!imageData)
{
OSG_WARN << "ReadDDSFile warning: imageData == NULL" << std::endl;
return NULL;
}
// Read pixels in two chunks. First main image, next mipmaps.
if ( !_istream.read( (char*)imageData, size ) )
{
delete [] imageData;
OSG_WARN << "ReadDDSFile warning: couldn't read imageData" << std::endl;
return NULL;
}
// If loading mipmaps in second chunk fails we may still use main image
if ( size < sizeWithMipmaps && !_istream.read( (char*)imageData + size, sizeWithMipmaps - size ) )
{
sizeWithMipmaps = size;
mipmap_offsets.resize( 0 );
OSG_WARN << "ReadDDSFile warning: couldn't read mipmapData" << std::endl;
// if mipmaps read failed we leave some not used overhead memory allocated past main image
// this memory will not be used but it will not cause leak in worst meaning of this word.
}
osgImage->setImage(s,t,r, internalFormat, pixelFormat, dataType, imageData, osg::Image::USE_NEW_DELETE);
if (mipmap_offsets.size()>0) osgImage->setMipmapLevels(mipmap_offsets);
if (flipDDSRead) {
osgImage->setOrigin(osg::Image::BOTTOM_LEFT);
osgImage->flipVertical();
}
// Return Image.
return osgImage.release();
}
bool WriteDDSFile(const osg::Image *img, std::ostream& fout, bool autoFlipDDSWrite)
{
// Initialize ddsd structure and its members
DDSURFACEDESC2 ddsd;
memset( &ddsd, 0, sizeof( ddsd ) );
DDPIXELFORMAT ddpf;
memset( &ddpf, 0, sizeof( ddpf ) );
//DDCOLORKEY ddckCKDestOverlay;
//DDCOLORKEY ddckCKDestBlt;
//DDCOLORKEY ddckCKSrcOverlay;
//DDCOLORKEY ddckCKSrcBlt;
DDSCAPS2 ddsCaps;
memset( &ddsCaps, 0, sizeof( ddsCaps ) );
ddsd.dwSize = sizeof(ddsd);
ddpf.dwSize = sizeof(ddpf);
// Default values and initialization of structures' flags
unsigned int SD_flags = DDSD_CAPS | DDSD_HEIGHT | DDSD_WIDTH | DDSD_PIXELFORMAT;
unsigned int CAPS_flags = DDSCAPS_TEXTURE;
unsigned int PF_flags = 0;
unsigned int CAPS2_flags = 0;
// Get image properties
unsigned int dataType = img->getDataType();
unsigned int pixelFormat = img->getPixelFormat();
//unsigned int internalFormat = img->getInternalTextureFormat();
//unsigned int components = osg::Image::computeNumComponents(pixelFormat);
unsigned int pixelSize = osg::Image::computePixelSizeInBits(pixelFormat, dataType);
unsigned int imageSize = img->getImageSizeInBytes();
ddsd.dwWidth = img->s();
ddsd.dwHeight = img->t();
int r = img->r();
if(r > 1) /* check for 3d image */
{
ddsd.dwDepth = r;
SD_flags |= DDSD_DEPTH;
CAPS_flags |= DDSCAPS_COMPLEX;
CAPS2_flags |= DDSCAPS2_VOLUME;
}
// Determine format - set flags and ddsd, ddpf properties
switch (pixelFormat)
{
//Uncompressed
case GL_RGBA:
{
ddpf.dwRBitMask = 0x000000ff;
ddpf.dwGBitMask = 0x0000ff00;
ddpf.dwBBitMask = 0x00ff0000;
ddpf.dwRGBAlphaBitMask = 0xff000000;
PF_flags |= (DDPF_ALPHAPIXELS | DDPF_RGB);
ddpf.dwRGBBitCount = pixelSize;
ddsd.lPitch = img->getRowSizeInBytes();
SD_flags |= DDSD_PITCH;
}
break;
case GL_BGRA:
{
ddpf.dwBBitMask = 0x000000ff;
ddpf.dwGBitMask = 0x0000ff00;
ddpf.dwRBitMask = 0x00ff0000;
ddpf.dwRGBAlphaBitMask = 0xff000000;
PF_flags |= (DDPF_ALPHAPIXELS | DDPF_RGB);
ddpf.dwRGBBitCount = pixelSize;
ddsd.lPitch = img->getRowSizeInBytes();
SD_flags |= DDSD_PITCH;
}
break;
case GL_LUMINANCE_ALPHA:
{
ddpf.dwRBitMask = 0x000000ff;
ddpf.dwRGBAlphaBitMask = 0x0000ff00;
PF_flags |= (DDPF_ALPHAPIXELS | DDPF_LUMINANCE);
ddpf.dwRGBBitCount = pixelSize;
ddsd.lPitch = img->getRowSizeInBytes();
SD_flags |= DDSD_PITCH;
}
break;
case GL_RGB:
{
ddpf.dwRBitMask = 0x000000ff;
ddpf.dwGBitMask = 0x0000ff00;
ddpf.dwBBitMask = 0x00ff0000;
PF_flags |= DDPF_RGB;
ddpf.dwRGBBitCount = pixelSize;
ddsd.lPitch = img->getRowSizeInBytes();
SD_flags |= DDSD_PITCH;
}
break;
case GL_BGR:
{
ddpf.dwBBitMask = 0x000000ff;
ddpf.dwGBitMask = 0x0000ff00;
ddpf.dwRBitMask = 0x00ff0000;
PF_flags |= DDPF_RGB;
ddpf.dwRGBBitCount = pixelSize;
ddsd.lPitch = img->getRowSizeInBytes();
SD_flags |= DDSD_PITCH;
}
break;
case GL_LUMINANCE:
{
ddpf.dwRBitMask = 0x000000ff;
PF_flags |= DDPF_LUMINANCE;
ddpf.dwRGBBitCount = pixelSize;
ddsd.lPitch = img->getRowSizeInBytes();
SD_flags |= DDSD_PITCH;
}
break;
case GL_ALPHA:
{
ddpf.dwRGBAlphaBitMask = 0x000000ff;
PF_flags |= DDPF_ALPHA;
ddpf.dwRGBBitCount = pixelSize;
ddsd.lPitch = img->getRowSizeInBytes();
SD_flags |= DDSD_PITCH;
}
break;
//Compressed
case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
{
ddpf.dwFourCC = FOURCC_DXT1;
PF_flags |= (DDPF_ALPHAPIXELS | DDPF_FOURCC);
ddsd.dwLinearSize = imageSize;
SD_flags |= DDSD_LINEARSIZE;
}
break;
case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
{
ddpf.dwFourCC = FOURCC_DXT3;
PF_flags |= (DDPF_ALPHAPIXELS | DDPF_FOURCC);
ddsd.dwLinearSize = imageSize;
SD_flags |= DDSD_LINEARSIZE;
}
break;
case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
{
ddpf.dwFourCC = FOURCC_DXT5;
PF_flags |= (DDPF_ALPHAPIXELS | DDPF_FOURCC);
ddsd.dwLinearSize = imageSize;
SD_flags |= DDSD_LINEARSIZE;
}
break;
case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
{
ddpf.dwFourCC = FOURCC_DXT1;
PF_flags |= DDPF_FOURCC; /* No alpha here */
ddsd.dwLinearSize = imageSize;
SD_flags |= DDSD_LINEARSIZE;
}
break;
case GL_COMPRESSED_SIGNED_RED_RGTC1_EXT:
{
ddpf.dwFourCC = FOURCC_ATI1;
PF_flags |= DDPF_FOURCC; /* No alpha here */
ddsd.dwLinearSize = imageSize;
SD_flags |= DDSD_LINEARSIZE;
}
break;
case GL_COMPRESSED_RED_RGTC1_EXT:
{
ddpf.dwFourCC = FOURCC_ATI1;
PF_flags |= DDPF_FOURCC; /* No alpha here */
ddsd.dwLinearSize = imageSize;
SD_flags |= DDSD_LINEARSIZE;
}
break;
case GL_COMPRESSED_SIGNED_RED_GREEN_RGTC2_EXT:
{
ddpf.dwFourCC = FOURCC_ATI2;
PF_flags |= DDPF_FOURCC; /* No alpha here */
ddsd.dwLinearSize = imageSize;
SD_flags |= DDSD_LINEARSIZE;
}
break;
case GL_COMPRESSED_RED_GREEN_RGTC2_EXT:
{
ddpf.dwFourCC = FOURCC_ATI2;
PF_flags |= DDPF_FOURCC; /* No alpha here */
ddsd.dwLinearSize = imageSize;
SD_flags |= DDSD_LINEARSIZE;
}
break;
default:
OSG_WARN<<"Warning:: unhandled pixel format in image, file cannot be written."<<std::endl;
return false;
}
// set even more flags
if( !img->isMipmap() ) {
OSG_INFO<<"no mipmaps to write out."<<std::endl;
} else if( img->getPacking() > 1 ) {
OSG_WARN<<"Warning: mipmaps not written. DDS requires packing == 1."<<std::endl;
} else { // image contains mipmaps and has 1 byte alignment
SD_flags |= DDSD_MIPMAPCOUNT;
CAPS_flags |= DDSCAPS_COMPLEX | DDSCAPS_MIPMAP;
ddsd.dwMipMapCount = img->getNumMipmapLevels();
OSG_INFO<<"writing out with mipmaps ddsd.dwMipMapCount"<<ddsd.dwMipMapCount<<std::endl;
}
// Assign flags and structure members of ddsd
ddsd.dwFlags = SD_flags;
ddpf.dwFlags = PF_flags;
ddsCaps.dwCaps = CAPS_flags;
ddsCaps.dwCaps2 = CAPS2_flags;
ddsd.ddpfPixelFormat = ddpf;
ddsd.ddsCaps = ddsCaps;
osg::ref_ptr<const osg::Image> source;
// int isize = img->getTotalSizeInBytesIncludingMipmaps();
if (autoFlipDDSWrite && img->getOrigin() == osg::Image::BOTTOM_LEFT)
{
osg::ref_ptr<osg::Image> copy = new osg::Image(*img,osg::CopyOp::DEEP_COPY_ALL);
copy->flipVertical();
source = copy;
}
else
{
source = img;
}
// Write DDS file
fout.write("DDS ", 4); /* write FOURCC */
fout.write(reinterpret_cast<char*>(&ddsd), sizeof(ddsd)); /* write file header */
for(osg::Image::DataIterator itr(img); itr.valid(); ++itr)
{
fout.write(reinterpret_cast<const char*>(itr.data()), itr.size() );
}
// Check for correct saving
if ( fout.fail() )
return false;
// If we get that far the file was saved properly //
return true;
}
class ReaderWriterDDS : public osgDB::ReaderWriter
{
public:
ReaderWriterDDS()
{
supportsExtension("dds","DDS image format");
supportsOption("dds_dxt1_rgb","Set the pixel format of DXT1 encoded images to be RGB variant of DXT1");
supportsOption("dds_dxt1_rgba","Set the pixel format of DXT1 encoded images to be RGBA variant of DXT1");
supportsOption("dds_dxt1_detect_rgba","For DXT1 encode images set the pixel format according to presence of transparent pixels");
supportsOption("dds_flip","Flip the image about the horizontal axis");
supportsOption("ddsNoAutoFlipWrite", "(Write option) Avoid automatically flipping the image vertically when writing, depending on the origin (Image::getOrigin()).");
}
virtual const char* className() const
{
return "DDS Image Reader/Writer";
}
virtual ReadResult readObject(const std::string& file, const osgDB::ReaderWriter::Options* options) const
{
return readImage(file,options);
}
virtual ReadResult readObject(std::istream& fin, const Options* options) const
{
return readImage(fin,options);
}
virtual ReadResult readImage(const std::string& file, const osgDB::ReaderWriter::Options* options) const
{
std::string ext = osgDB::getLowerCaseFileExtension(file);
if (!acceptsExtension(ext)) return ReadResult::FILE_NOT_HANDLED;
std::string fileName = osgDB::findDataFile( file, options );
if (fileName.empty()) return ReadResult::FILE_NOT_FOUND;
osgDB::ifstream stream(fileName.c_str(), std::ios::in | std::ios::binary);
if(!stream) return ReadResult::FILE_NOT_HANDLED;
ReadResult rr = readImage(stream, options);
if(rr.validImage()) rr.getImage()->setFileName(file);
return rr;
}
virtual ReadResult readImage(std::istream& fin, const Options* options) const
{
bool dds_flip(false);
bool dds_dxt1_rgba(false);
bool dds_dxt1_rgb(false);
bool dds_dxt1_detect_rgba(false);
if (options)
{
std::istringstream iss(options->getOptionString());
std::string opt;
while (iss >> opt)
{
if (opt == "dds_flip") dds_flip = true;
if (opt == "dds_dxt1_rgba") dds_dxt1_rgba = true;
if (opt == "dds_dxt1_rgb") dds_dxt1_rgb = true;
if (opt == "dds_dxt1_detect_rgba") dds_dxt1_detect_rgba = true;
}
}
osg::Image* osgImage = ReadDDSFile(fin, dds_flip);
if (osgImage==NULL) return ReadResult::FILE_NOT_HANDLED;
if (osgImage->getPixelFormat()==GL_COMPRESSED_RGB_S3TC_DXT1_EXT ||
osgImage->getPixelFormat()==GL_COMPRESSED_RGBA_S3TC_DXT1_EXT)
{
if (dds_dxt1_rgba)
{
osgImage->setPixelFormat(GL_COMPRESSED_RGBA_S3TC_DXT1_EXT);
osgImage->setInternalTextureFormat(GL_COMPRESSED_RGBA_S3TC_DXT1_EXT);
}
else if (dds_dxt1_rgb)
{
osgImage->setPixelFormat(GL_COMPRESSED_RGB_S3TC_DXT1_EXT);
osgImage->setInternalTextureFormat(GL_COMPRESSED_RGB_S3TC_DXT1_EXT);
}
else if (dds_dxt1_detect_rgba)
{
// check to see if DXT1c (RGB_S3TC_DXT1) format image might actually be
// a DXT1a format image
// temporarily set pixel format to GL_COMPRESSED_RGBA_S3TC_DXT1_EXT so
// that the isImageTranslucent() method assumes that RGBA is present and then
// checks the alpha values to see if they are all 1.0.
osgImage->setPixelFormat(GL_COMPRESSED_RGBA_S3TC_DXT1_EXT);
osgImage->setInternalTextureFormat(GL_COMPRESSED_RGBA_S3TC_DXT1_EXT);
if (!osgImage->isImageTranslucent())
{
// image contains alpha's that are 1.0, so treat is as RGB
OSG_INFO<<"Image with PixelFormat==GL_COMPRESSED_RGB_S3TC_DXT1_EXT is opaque."<<std::endl;
osgImage->setPixelFormat(GL_COMPRESSED_RGB_S3TC_DXT1_EXT);
osgImage->setInternalTextureFormat(GL_COMPRESSED_RGB_S3TC_DXT1_EXT);
}
else
{
// image contains alpha's that are non 1.0, so treat is as RGBA
OSG_INFO<<"Image with PixelFormat==GL_COMPRESSED_RGB_S3TC_DXT1_EXT has transparency, setting format to GL_COMPRESSED_RGBA_S3TC_DXT1_EXT."<<std::endl;
}
}
}
return osgImage;
}
virtual WriteResult writeObject(const osg::Object& object,const std::string& file, const osgDB::ReaderWriter::Options* options) const
{
const osg::Image* image = dynamic_cast<const osg::Image*>(&object);
if (!image) return WriteResult::FILE_NOT_HANDLED;
return writeImage(*image,file,options);
}
virtual WriteResult writeObject(const osg::Object& object,std::ostream& fout,const Options* options) const
{
const osg::Image* image = dynamic_cast<const osg::Image*>(&object);
if (!image) return WriteResult::FILE_NOT_HANDLED;
return writeImage(*image,fout,options);
}
virtual WriteResult writeImage(const osg::Image &image,const std::string& file, const osgDB::ReaderWriter::Options* options) const
{
std::string ext = osgDB::getFileExtension(file);
if (!acceptsExtension(ext)) return WriteResult::FILE_NOT_HANDLED;
osgDB::ofstream fout(file.c_str(), std::ios::out | std::ios::binary);
if(!fout) return WriteResult::ERROR_IN_WRITING_FILE;
return writeImage(image,fout,options);
}
virtual WriteResult writeImage(const osg::Image& image,std::ostream& fout,const Options* options) const
{
bool noAutoFlipDDSWrite = options && options->getOptionString().find("ddsNoAutoFlipWrite")!=std::string::npos;
bool success = WriteDDSFile(&image, fout, !noAutoFlipDDSWrite);
if(success)
return WriteResult::FILE_SAVED;
else
return WriteResult::ERROR_IN_WRITING_FILE;
}
};
// now register with Registry to instantiate the above
// reader/writer.
REGISTER_OSGPLUGIN(dds, ReaderWriterDDS)
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