Hi Robert,
I have extended the dds loader by some newer DX10 texture formats. Especially
the float texture formats.
I need a few of these formats somewhere but have extended everything that I
found plausible and was easy to find a GL texture type/format for.
For some float32 type of texture the files the implementation seem to work
fine.
The rest lacks testing.
The writer side is not implemented.
The change is based on rev 13286.
Please Review/Apply.
Greetings
Mathias
/**********************************************************************
*
* 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'))
/*
* FOURCC codes for DX10 files
*/
#define FOURCC_DX10 (MAKEFOURCC('D','X','1','0'))
typedef enum OSG_DXGI_FORMAT {
OSG_DXGI_FORMAT_UNKNOWN = 0,
OSG_DXGI_FORMAT_R32G32B32A32_TYPELESS = 1,
OSG_DXGI_FORMAT_R32G32B32A32_FLOAT = 2,
OSG_DXGI_FORMAT_R32G32B32A32_UINT = 3,
OSG_DXGI_FORMAT_R32G32B32A32_SINT = 4,
OSG_DXGI_FORMAT_R32G32B32_TYPELESS = 5,
OSG_DXGI_FORMAT_R32G32B32_FLOAT = 6,
OSG_DXGI_FORMAT_R32G32B32_UINT = 7,
OSG_DXGI_FORMAT_R32G32B32_SINT = 8,
OSG_DXGI_FORMAT_R16G16B16A16_TYPELESS = 9,
OSG_DXGI_FORMAT_R16G16B16A16_FLOAT = 10,
OSG_DXGI_FORMAT_R16G16B16A16_UNORM = 11,
OSG_DXGI_FORMAT_R16G16B16A16_UINT = 12,
OSG_DXGI_FORMAT_R16G16B16A16_SNORM = 13,
OSG_DXGI_FORMAT_R16G16B16A16_SINT = 14,
OSG_DXGI_FORMAT_R32G32_TYPELESS = 15,
OSG_DXGI_FORMAT_R32G32_FLOAT = 16,
OSG_DXGI_FORMAT_R32G32_UINT = 17,
OSG_DXGI_FORMAT_R32G32_SINT = 18,
OSG_DXGI_FORMAT_R32G8X24_TYPELESS = 19,
OSG_DXGI_FORMAT_D32_FLOAT_S8X24_UINT = 20,
OSG_DXGI_FORMAT_R32_FLOAT_X8X24_TYPELESS = 21,
OSG_DXGI_FORMAT_X32_TYPELESS_G8X24_UINT = 22,
OSG_DXGI_FORMAT_R10G10B10A2_TYPELESS = 23,
OSG_DXGI_FORMAT_R10G10B10A2_UNORM = 24,
OSG_DXGI_FORMAT_R10G10B10A2_UINT = 25,
OSG_DXGI_FORMAT_R11G11B10_FLOAT = 26,
OSG_DXGI_FORMAT_R8G8B8A8_TYPELESS = 27,
OSG_DXGI_FORMAT_R8G8B8A8_UNORM = 28,
OSG_DXGI_FORMAT_R8G8B8A8_UNORM_SRGB = 29,
OSG_DXGI_FORMAT_R8G8B8A8_UINT = 30,
OSG_DXGI_FORMAT_R8G8B8A8_SNORM = 31,
OSG_DXGI_FORMAT_R8G8B8A8_SINT = 32,
OSG_DXGI_FORMAT_R16G16_TYPELESS = 33,
OSG_DXGI_FORMAT_R16G16_FLOAT = 34,
OSG_DXGI_FORMAT_R16G16_UNORM = 35,
OSG_DXGI_FORMAT_R16G16_UINT = 36,
OSG_DXGI_FORMAT_R16G16_SNORM = 37,
OSG_DXGI_FORMAT_R16G16_SINT = 38,
OSG_DXGI_FORMAT_R32_TYPELESS = 39,
OSG_DXGI_FORMAT_D32_FLOAT = 40,
OSG_DXGI_FORMAT_R32_FLOAT = 41,
OSG_DXGI_FORMAT_R32_UINT = 42,
OSG_DXGI_FORMAT_R32_SINT = 43,
OSG_DXGI_FORMAT_R24G8_TYPELESS = 44,
OSG_DXGI_FORMAT_D24_UNORM_S8_UINT = 45,
OSG_DXGI_FORMAT_R24_UNORM_X8_TYPELESS = 46,
OSG_DXGI_FORMAT_X24_TYPELESS_G8_UINT = 47,
OSG_DXGI_FORMAT_R8G8_TYPELESS = 48,
OSG_DXGI_FORMAT_R8G8_UNORM = 49,
OSG_DXGI_FORMAT_R8G8_UINT = 50,
OSG_DXGI_FORMAT_R8G8_SNORM = 51,
OSG_DXGI_FORMAT_R8G8_SINT = 52,
OSG_DXGI_FORMAT_R16_TYPELESS = 53,
OSG_DXGI_FORMAT_R16_FLOAT = 54,
OSG_DXGI_FORMAT_D16_UNORM = 55,
OSG_DXGI_FORMAT_R16_UNORM = 56,
OSG_DXGI_FORMAT_R16_UINT = 57,
OSG_DXGI_FORMAT_R16_SNORM = 58,
OSG_DXGI_FORMAT_R16_SINT = 59,
OSG_DXGI_FORMAT_R8_TYPELESS = 60,
OSG_DXGI_FORMAT_R8_UNORM = 61,
OSG_DXGI_FORMAT_R8_UINT = 62,
OSG_DXGI_FORMAT_R8_SNORM = 63,
OSG_DXGI_FORMAT_R8_SINT = 64,
OSG_DXGI_FORMAT_A8_UNORM = 65,
OSG_DXGI_FORMAT_R1_UNORM = 66,
OSG_DXGI_FORMAT_R9G9B9E5_SHAREDEXP = 67,
OSG_DXGI_FORMAT_R8G8_B8G8_UNORM = 68,
OSG_DXGI_FORMAT_G8R8_G8B8_UNORM = 69,
OSG_DXGI_FORMAT_BC1_TYPELESS = 70,
OSG_DXGI_FORMAT_BC1_UNORM = 71,
OSG_DXGI_FORMAT_BC1_UNORM_SRGB = 72,
OSG_DXGI_FORMAT_BC2_TYPELESS = 73,
OSG_DXGI_FORMAT_BC2_UNORM = 74,
OSG_DXGI_FORMAT_BC2_UNORM_SRGB = 75,
OSG_DXGI_FORMAT_BC3_TYPELESS = 76,
OSG_DXGI_FORMAT_BC3_UNORM = 77,
OSG_DXGI_FORMAT_BC3_UNORM_SRGB = 78,
OSG_DXGI_FORMAT_BC4_TYPELESS = 79,
OSG_DXGI_FORMAT_BC4_UNORM = 80,
OSG_DXGI_FORMAT_BC4_SNORM = 81,
OSG_DXGI_FORMAT_BC5_TYPELESS = 82,
OSG_DXGI_FORMAT_BC5_UNORM = 83,
OSG_DXGI_FORMAT_BC5_SNORM = 84,
OSG_DXGI_FORMAT_B5G6R5_UNORM = 85,
OSG_DXGI_FORMAT_B5G5R5A1_UNORM = 86,
OSG_DXGI_FORMAT_B8G8R8A8_UNORM = 87,
OSG_DXGI_FORMAT_B8G8R8X8_UNORM = 88,
OSG_DXGI_FORMAT_R10G10B10_XR_BIAS_A2_UNORM = 89,
OSG_DXGI_FORMAT_B8G8R8A8_TYPELESS = 90,
OSG_DXGI_FORMAT_B8G8R8A8_UNORM_SRGB = 91,
OSG_DXGI_FORMAT_B8G8R8X8_TYPELESS = 92,
OSG_DXGI_FORMAT_B8G8R8X8_UNORM_SRGB = 93,
OSG_DXGI_FORMAT_BC6H_TYPELESS = 94,
OSG_DXGI_FORMAT_BC6H_UF16 = 95,
OSG_DXGI_FORMAT_BC6H_SF16 = 96,
OSG_DXGI_FORMAT_BC7_TYPELESS = 97,
OSG_DXGI_FORMAT_BC7_UNORM = 98,
OSG_DXGI_FORMAT_BC7_UNORM_SRGB = 99,
OSG_DXGI_FORMAT_AYUV = 100,
OSG_DXGI_FORMAT_Y410 = 101,
OSG_DXGI_FORMAT_Y416 = 102,
OSG_DXGI_FORMAT_NV12 = 103,
OSG_DXGI_FORMAT_P010 = 104,
OSG_DXGI_FORMAT_P016 = 105,
OSG_DXGI_FORMAT_420_OPAQUE = 106,
OSG_DXGI_FORMAT_YUY2 = 107,
OSG_DXGI_FORMAT_Y210 = 108,
OSG_DXGI_FORMAT_Y216 = 109,
OSG_DXGI_FORMAT_NV11 = 110,
OSG_DXGI_FORMAT_AI44 = 111,
OSG_DXGI_FORMAT_IA44 = 112,
OSG_DXGI_FORMAT_P8 = 113,
OSG_DXGI_FORMAT_A8P8 = 114,
OSG_DXGI_FORMAT_B4G4R4A4_UNORM = 115,
OSG_DXGI_FORMAT_FORCE_UINT = 0xffffffffUL
} OSG_DXGI_FORMAT;
typedef enum OSG_D3D10_RESOURCE_DIMENSION {
OSG_D3D10_RESOURCE_DIMENSION_UNKNOWN = 0,
OSG_D3D10_RESOURCE_DIMENSION_BUFFER = 1,
OSG_D3D10_RESOURCE_DIMENSION_TEXTURE1D = 2,
OSG_D3D10_RESOURCE_DIMENSION_TEXTURE2D = 3,
OSG_D3D10_RESOURCE_DIMENSION_TEXTURE3D = 4
} OSG_D3D10_RESOURCE_DIMENSION;
typedef struct {
OSG_DXGI_FORMAT dxgiFormat;
OSG_D3D10_RESOURCE_DIMENSION resourceDimension;
UI32 miscFlag;
UI32 arraySize;
UI32 reserved;
} OSG_DDS_HEADER_DXT10;
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)
{
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 FOURCC_DX10:
OSG_INFO << "ReadDDSFile info : format = DX10 file" << std::endl;
{
OSG_DDS_HEADER_DXT10 header10;
_istream.read((char*)(&header10), sizeof(header10));
switch (header10.dxgiFormat) {
case OSG_DXGI_FORMAT_R32G32B32A32_FLOAT:
internalFormat = GL_RGBA32F;
pixelFormat = GL_RGBA;
dataType = GL_FLOAT;
break;
case OSG_DXGI_FORMAT_R32G32B32A32_UINT:
internalFormat = GL_RGBA32UI;
pixelFormat = GL_RGBA;
dataType = GL_UNSIGNED_INT;
break;
case OSG_DXGI_FORMAT_R32G32B32A32_SINT:
internalFormat = GL_RGBA32I;
pixelFormat = GL_RGBA;
dataType = GL_INT;
break;
case OSG_DXGI_FORMAT_R32G32B32_FLOAT:
internalFormat = GL_RGB32F;
pixelFormat = GL_RGB;
dataType = GL_FLOAT;
break;
case OSG_DXGI_FORMAT_R32G32B32_UINT:
internalFormat = GL_RGB32UI;
pixelFormat = GL_RGB;
dataType = GL_UNSIGNED_INT;
break;
case OSG_DXGI_FORMAT_R32G32B32_SINT:
internalFormat = GL_RGB32I;
pixelFormat = GL_RGB;
dataType = GL_INT;
break;
case OSG_DXGI_FORMAT_R16G16B16A16_FLOAT:
internalFormat = GL_RGBA16F;
pixelFormat = GL_RGBA;
dataType = GL_HALF_FLOAT;
break;
case OSG_DXGI_FORMAT_R16G16B16A16_UNORM:
internalFormat = GL_RGBA16;
pixelFormat = GL_RGBA;
dataType = GL_UNSIGNED_SHORT;
break;
case OSG_DXGI_FORMAT_R16G16B16A16_UINT:
internalFormat = GL_RGBA16UI;
pixelFormat = GL_RGBA;
dataType = GL_UNSIGNED_SHORT;
break;
case OSG_DXGI_FORMAT_R16G16B16A16_SNORM:
internalFormat = GL_RGBA16_SNORM;
pixelFormat = GL_RGBA;
dataType = GL_SHORT;
break;
case OSG_DXGI_FORMAT_R16G16B16A16_SINT:
internalFormat = GL_RGBA16I;
pixelFormat = GL_RGBA;
dataType = GL_SHORT;
break;
case OSG_DXGI_FORMAT_R32G32_FLOAT:
internalFormat = GL_RG32F;
pixelFormat = GL_RG;
dataType = GL_FLOAT;
break;
case OSG_DXGI_FORMAT_R32G32_UINT:
internalFormat = GL_RG32UI;
pixelFormat = GL_RG;
dataType = GL_UNSIGNED_INT;
break;
case OSG_DXGI_FORMAT_R32G32_SINT:
internalFormat = GL_RG32I;
pixelFormat = GL_RG;
dataType = GL_INT;
break;
case OSG_DXGI_FORMAT_R16G16_FLOAT:
internalFormat = GL_RG16F;
pixelFormat = GL_RG;
dataType = GL_HALF_FLOAT;
break;
case OSG_DXGI_FORMAT_R16G16_UNORM:
internalFormat = GL_RG16;
pixelFormat = GL_RG;
dataType = GL_UNSIGNED_SHORT;
break;
case OSG_DXGI_FORMAT_R16G16_UINT:
internalFormat = GL_RG16UI;
pixelFormat = GL_RG;
dataType = GL_UNSIGNED_SHORT;
break;
case OSG_DXGI_FORMAT_R16G16_SNORM:
internalFormat = GL_RG16_SNORM;
pixelFormat = GL_RG;
dataType = GL_UNSIGNED_SHORT;
break;
case OSG_DXGI_FORMAT_R16G16_SINT:
internalFormat = GL_RG16I;
pixelFormat = GL_RG;
dataType = GL_SHORT;
break;
case OSG_DXGI_FORMAT_R32_FLOAT:
internalFormat = GL_R32F;
pixelFormat = GL_RED;
dataType = GL_FLOAT;
break;
case OSG_DXGI_FORMAT_R32_UINT:
internalFormat = GL_R32UI;
pixelFormat = GL_RED;
dataType = GL_UNSIGNED_INT;
break;
case OSG_DXGI_FORMAT_R32_SINT:
internalFormat = GL_R32I;
pixelFormat = GL_RED;
dataType = GL_INT;
break;
case OSG_DXGI_FORMAT_R8G8_UNORM:
internalFormat = GL_RG;
pixelFormat = GL_RG;
dataType = GL_UNSIGNED_BYTE;
break;
case OSG_DXGI_FORMAT_R8G8_UINT:
internalFormat = GL_RG8UI;
pixelFormat = GL_RG;
dataType = GL_UNSIGNED_BYTE;
break;
case OSG_DXGI_FORMAT_R8G8_SNORM:
internalFormat = GL_RG_SNORM;
pixelFormat = GL_RG;
dataType = GL_BYTE;
break;
case OSG_DXGI_FORMAT_R8G8_SINT:
internalFormat = GL_RG8I;
pixelFormat = GL_RG;
dataType = GL_BYTE;
break;
case OSG_DXGI_FORMAT_R16_FLOAT:
internalFormat = GL_R16F;
pixelFormat = GL_RED;
dataType = GL_HALF_FLOAT;
break;
case OSG_DXGI_FORMAT_R16_UNORM:
internalFormat = GL_RED;
pixelFormat = GL_RED;
dataType = GL_HALF_FLOAT;
break;
case OSG_DXGI_FORMAT_R16_UINT:
internalFormat = GL_R16UI;
pixelFormat = GL_RED;
dataType = GL_UNSIGNED_SHORT;
break;
case OSG_DXGI_FORMAT_R16_SNORM:
internalFormat = GL_RED_SNORM;
pixelFormat = GL_RED;
dataType = GL_SHORT;
break;
case OSG_DXGI_FORMAT_R16_SINT:
internalFormat = GL_R16I;
pixelFormat = GL_RED;
dataType = GL_SHORT;
break;
default:
OSG_WARN << "ReadDDSFile warning: unhandled DX10 pixel format 0x"
<< std::hex << std::setw(8) << std::setfill('0')
<< header10.dxgiFormat << std::dec
<< " in dds file, image not loaded." << std::endl;
return NULL;
}
}
break;
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);
// Return Image.
return osgImage.release();
}
bool WriteDDSFile(const osg::Image *img, std::ostream& fout)
{
// 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;
// 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 horizontl axis");
}
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
{
osg::Image* osgImage = ReadDDSFile(fin);
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 (options && options->getOptionString().find("dds_dxt1_rgba")!=std::string::npos)
{
osgImage->setPixelFormat(GL_COMPRESSED_RGBA_S3TC_DXT1_EXT);
osgImage->setInternalTextureFormat(GL_COMPRESSED_RGBA_S3TC_DXT1_EXT);
}
else if (options && options->getOptionString().find("dds_dxt1_rgb")!=std::string::npos)
{
osgImage->setPixelFormat(GL_COMPRESSED_RGB_S3TC_DXT1_EXT);
osgImage->setInternalTextureFormat(GL_COMPRESSED_RGB_S3TC_DXT1_EXT);
}
else if (options && options->getOptionString().find("dds_dxt1_detect_rgba")!=std::string::npos)
{
// 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;
}
}
}
if (options && options->getOptionString().find("dds_flip")!=std::string::npos)
{
osgImage->flipVertical();
}
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*) const
{
bool success = WriteDDSFile(&image, fout);
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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