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# OgrePixelFormat.h

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    00001 /*
    00002 -----------------------------------------------------------------------------
    00003 This source file is part of OGRE
    00004     (Object-oriented Graphics Rendering Engine)
    00005 For the latest info, see http://www.ogre3d.org/
    00006
    00007 Copyright (c) 2000-2006 Torus Knot Software Ltd
    00008 Also see acknowledgements in Readme.html
    00009
    00010 This program is free software; you can redistribute it and/or modify it under
    00011 the terms of the GNU Lesser General Public License as published by the Free Software
    00012 Foundation; either version 2 of the License, or (at your option) any later
    00013 version.
    00014
    00015 This program is distributed in the hope that it will be useful, but WITHOUT
    00016 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
    00017 FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
    00018
    00019 You should have received a copy of the GNU Lesser General Public License along with
    00020 this program; if not, write to the Free Software Foundation, Inc., 59 Temple
    00021 Place - Suite 330, Boston, MA 02111-1307, USA, or go to
    00022 http://www.gnu.org/copyleft/lesser.txt.
    00023
    00024 You may alternatively use this source under the terms of a specific version of
    00025 the OGRE Unrestricted License provided you have obtained such a license from
    00026 Torus Knot Software Ltd.
    00027 -----------------------------------------------------------------------------
    00028 */
    00029 #ifndef _PixelFormat_H__
    00030 #define _PixelFormat_H__
    00031
    00032 #include "OgrePrerequisites.h"
    00033 #include "OgreCommon.h"
    00034
    00035 namespace Ogre {
    00037     enum PixelFormat
    00038     {
    00040         PF_UNKNOWN = 0,
    00042         PF_L8 = 1,
    00043         PF_BYTE_L = PF_L8,
    00045         PF_L16 = 2,
    00046         PF_SHORT_L = PF_L16,
    00048         PF_A8 = 3,
    00049         PF_BYTE_A = PF_A8,
    00051         PF_A4L4 = 4,
    00053         PF_BYTE_LA = 5,
    00055         PF_R5G6B5 = 6,
    00057         PF_B5G6R5 = 7,
    00059         PF_R3G3B2 = 31,
    00061         PF_A4R4G4B4 = 8,
    00063         PF_A1R5G5B5 = 9,
    00065         PF_R8G8B8 = 10,
    00067         PF_B8G8R8 = 11,
    00069         PF_A8R8G8B8 = 12,
    00071         PF_A8B8G8R8 = 13,
    00073         PF_B8G8R8A8 = 14,
    00075         PF_R8G8B8A8 = 28,
    00078         PF_X8R8G8B8 = 26,
    00081         PF_X8B8G8R8 = 27,
    00082 #if OGRE_ENDIAN == OGRE_ENDIAN_BIG
    00083
    00084         PF_BYTE_RGB = PF_R8G8B8,
    00086         PF_BYTE_BGR = PF_B8G8R8,
    00088         PF_BYTE_BGRA = PF_B8G8R8A8,
    00090         PF_BYTE_RGBA = PF_R8G8B8A8,
    00091 #else
    00092
    00093         PF_BYTE_RGB = PF_B8G8R8,
    00095         PF_BYTE_BGR = PF_R8G8B8,
    00097         PF_BYTE_BGRA = PF_A8R8G8B8,
    00099         PF_BYTE_RGBA = PF_A8B8G8R8,
    00100 #endif
    00101
    00102         PF_A2R10G10B10 = 15,
    00104         PF_A2B10G10R10 = 16,
    00106         PF_DXT1 = 17,
    00108         PF_DXT2 = 18,
    00110         PF_DXT3 = 19,
    00112         PF_DXT4 = 20,
    00114         PF_DXT5 = 21,
    00115         // 16-bit pixel format, 16 bits (float) for red
    00116         PF_FLOAT16_R = 32,
    00117         // 48-bit pixel format, 16 bits (float) for red, 16 bits (float) for green, 16 bits (float) for blue
    00118         PF_FLOAT16_RGB = 22,
    00119         // 64-bit pixel format, 16 bits (float) for red, 16 bits (float) for green, 16 bits (float) for blue, 16 bits (float) for alpha
    00120         PF_FLOAT16_RGBA = 23,
    00121         // 16-bit pixel format, 16 bits (float) for red
    00122         PF_FLOAT32_R = 33,
    00123        // 96-bit pixel format, 32 bits (float) for red, 32 bits (float) for green, 32 bits (float) for blue
    00124         PF_FLOAT32_RGB = 24,
    00125         // 128-bit pixel format, 32 bits (float) for red, 32 bits (float) for green, 32 bits (float) for blue, 32 bits (float) for alpha
    00126         PF_FLOAT32_RGBA = 25,
    00127         // 32-bit, 2-channel s10e5 floating point pixel format, 16-bit green, 16-bit red
    00128         PF_FLOAT16_GR = 35,
    00129         // 64-bit, 2-channel floating point pixel format, 32-bit green, 32-bit red
    00130         PF_FLOAT32_GR = 36,
    00131         // Depth texture format
    00132         PF_DEPTH = 29,
    00133         // 64-bit pixel format, 16 bits for red, green, blue and alpha
    00134         PF_SHORT_RGBA = 30,
    00135         // 32-bit pixel format, 16-bit green, 16-bit red
    00136         PF_SHORT_GR = 34,
    00137         // 48-bit pixel format, 16 bits for red, green and blue
    00138         PF_SHORT_RGB = 37,
    00139         // Number of pixel formats currently defined
    00140         PF_COUNT = 38
    00141     };
    00142
    00146     enum PixelFormatFlags {
    00147         // This format has an alpha channel
    00148         PFF_HASALPHA        = 0x00000001,
    00149         // This format is compressed. This invalidates the values in elemBytes,
    00150         // elemBits and the bit counts as these might not be fixed in a compressed format.
    00151         PFF_COMPRESSED    = 0x00000002,
    00152         // This is a floating point format
    00153         PFF_FLOAT           = 0x00000004,
    00154         // This is a depth format (for depth textures)
    00155         PFF_DEPTH           = 0x00000008,
    00156         // Format is in native endian. Generally true for the 16, 24 and 32 bits
    00157         // formats which can be represented as machine integers.
    00158         PFF_NATIVEENDIAN    = 0x00000010,
    00159         // This is an intensity format instead of a RGB one. The luminance
    00160         // replaces R,G and B. (but not A)
    00161         PFF_LUMINANCE       = 0x00000020
    00162     };
    00163
    00165     enum PixelComponentType
    00166     {
    00167         PCT_BYTE = 0,
    00168         PCT_SHORT = 1,
    00169         PCT_FLOAT16 = 2,
    00170         PCT_FLOAT32 = 3,
    00171         PCT_COUNT = 4
    00172     };
    00173
    00179     class _OgreExport PixelBox: public Box {
    00180     public:
    00182         PixelBox() {}
    00190         PixelBox(const Box &extents, PixelFormat pixelFormat, void *pixelData=0):
    00191             Box(extents), data(pixelData), format(pixelFormat)
    00192         {
    00193             setConsecutive();
    00194         }
    00204         PixelBox(size_t width, size_t height, size_t depth, PixelFormat pixelFormat, void *pixelData=0):
    00205             Box(0, 0, 0, width, height, depth),
    00206             data(pixelData), format(pixelFormat)
    00207         {
    00208             setConsecutive();
    00209         }
    00210
    00212         void *data;
    00214         PixelFormat format;
    00219         size_t rowPitch;
    00225         size_t slicePitch;
    00226
    00230         void setConsecutive()
    00231         {
    00232             rowPitch = getWidth();
    00233             slicePitch = getWidth()*getHeight();
    00234         }
    00239         size_t getRowSkip() const { return rowPitch - getWidth(); }
    00244         size_t getSliceSkip() const { return slicePitch - (getHeight() * rowPitch); }
    00245
    00249         bool isConsecutive() const
    00250         {
    00251             return rowPitch == getWidth() && slicePitch == getWidth()*getHeight();
    00252         }
    00256         size_t getConsecutiveSize() const;
    00265         PixelBox getSubVolume(const Box &def) const;
    00266     };
    00267
    00268
    00272     class _OgreExport PixelUtil {
    00273     public:
    00280         static size_t getNumElemBytes( PixelFormat format );
    00281
    00288         static size_t getNumElemBits( PixelFormat format );
    00289
    00307         static size_t getMemorySize(size_t width, size_t height, size_t depth, PixelFormat format);
    00308
    00316         static unsigned int getFlags( PixelFormat format );
    00317
    00319         static bool hasAlpha(PixelFormat format);
    00321         static bool isFloatingPoint(PixelFormat format);
    00323         static bool isCompressed(PixelFormat format);
    00325         static bool isDepth(PixelFormat format);
    00327         static bool isNativeEndian(PixelFormat format);
    00329         static bool isLuminance(PixelFormat format);
    00330
    00343         static bool isValidExtent(size_t width, size_t height, size_t depth, PixelFormat format);
    00344
    00348         static void getBitDepths(PixelFormat format, int rgba[4]);
    00349
    00353         static void getBitMasks(PixelFormat format, uint32 rgba[4]);
    00354
    00357         static String getFormatName(PixelFormat srcformat);
    00358
    00366         static bool isAccessible(PixelFormat srcformat);
    00367
    00372         static PixelComponentType getComponentType(PixelFormat fmt);
    00373
    00377         static size_t getComponentCount(PixelFormat fmt);
    00378
    00386         static PixelFormat getFormatFromName(const String& name, bool accessibleOnly = false, bool caseSensitive = false);
    00387
    00395         static String getBNFExpressionOfPixelFormats(bool accessibleOnly = false);
    00396
    00406         static PixelFormat getFormatForBitDepths(PixelFormat fmt, ushort integerBits, ushort floatBits);
    00407
    00413         static void packColour(const ColourValue &colour, const PixelFormat pf,  void* dest);
    00419         static void packColour(const uint8 r, const uint8 g, const uint8 b, const uint8 a, const PixelFormat pf,  void* dest);
    00427         static void packColour(const float r, const float g, const float b, const float a, const PixelFormat pf,  void* dest);
    00428
    00434         static void unpackColour(ColourValue *colour, PixelFormat pf,  const void* src);
    00443         static void unpackColour(uint8 *r, uint8 *g, uint8 *b, uint8 *a, PixelFormat pf,  const void* src);
    00449         static void unpackColour(float *r, float *g, float *b, float *a, PixelFormat pf,  const void* src);
    00450
    00459         static void bulkPixelConversion(void *src, PixelFormat srcFormat, void *dest, PixelFormat dstFormat, unsigned int count);
    00460
    00468         static void bulkPixelConversion(const PixelBox &src, const PixelBox &dst);
    00469     };
    00470
    00471 }
    00472
    00473 #endif

Copyright © 2000-2005 by The OGRE Team
This work is licensed under a Creative Commons Attribution-ShareAlike 2.5 License.
Last modified Thu Mar 6 09:46:26 2008