[657] | 1 | /*
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| 2 | -----------------------------------------------------------------------------
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| 3 | This source file is part of OGRE
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| 4 | (Object-oriented Graphics Rendering Engine)
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| 5 | For the latest info, see http://www.ogre3d.org/
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| 6 |
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| 7 | Copyright (c) 2000-2005 The OGRE Team
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| 8 | Also see acknowledgements in Readme.html
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| 9 |
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| 10 | This program is free software; you can redistribute it and/or modify it under
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| 11 | the terms of the GNU Lesser General Public License as published by the Free Software
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| 12 | Foundation; either version 2 of the License, or (at your option) any later
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| 13 | version.
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| 14 |
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| 15 | This program is distributed in the hope that it will be useful, but WITHOUT
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| 16 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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| 17 | FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
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| 18 |
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| 19 | You should have received a copy of the GNU Lesser General Public License along with
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| 20 | this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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| 21 | Place - Suite 330, Boston, MA 02111-1307, USA, or go to
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| 22 | http://www.gnu.org/copyleft/lesser.txt.
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| 23 | -----------------------------------------------------------------------------
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| 24 | */
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| 25 | #include "OgreStableHeaders.h"
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| 26 | #include "OgrePixelFormat.h"
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| 27 | #include "OgreBitwise.h"
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| 28 | #include "OgreColourValue.h"
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| 29 | #include "OgreException.h"
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| 30 |
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| 31 |
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| 32 | namespace {
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| 33 | #include "OgrePixelConversions.h"
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| 34 | };
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| 35 |
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| 36 | namespace Ogre {
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| 37 |
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| 38 | //-----------------------------------------------------------------------
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| 39 | /**
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| 40 | * A record that describes a pixel format in detail.
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| 41 | */
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| 42 | struct PixelFormatDescription {
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| 43 | /* Name of the format, as in the enum */
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| 44 | char *name;
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| 45 | /* Number of bytes one element (colour value) takes. */
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| 46 | size_t elemBytes;
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| 47 | /* Pixel format flags, see enum PixelFormatFlags for the bit field
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| 48 | * definitions
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| 49 | */
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| 50 | unsigned int flags;
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| 51 | /* Number of bits in one element. */
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| 52 | // int elemBits; == elemBytes * 8
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| 53 | /* Number of bits for red(or luminance), green, blue, alpha
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| 54 | */
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| 55 | int rbits,gbits,bbits,abits; /*, ibits, dbits, ... */
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| 56 |
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| 57 | /* Masks and shifts as used by packers/unpackers */
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| 58 | uint32 rmask, gmask, bmask, amask;
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| 59 | int rshift, gshift, bshift, ashift;
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| 60 | };
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| 61 | //-----------------------------------------------------------------------
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| 62 | /** Pixel format database */
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| 63 | PixelFormatDescription _pixelFormats[PF_COUNT] = {
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| 64 | //-----------------------------------------------------------------------
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| 65 | {"PF_UNKNOWN",
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| 66 | /* Bytes per element */
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| 67 | 0,
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| 68 | /* Flags */
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| 69 | 0,
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| 70 | /* rbits, gbits, bbits, abits */
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| 71 | 0, 0, 0, 0,
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| 72 | /* Masks and shifts */
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| 73 | 0, 0, 0, 0, 0, 0, 0, 0
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| 74 | },
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| 75 | //-----------------------------------------------------------------------
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| 76 | {"PF_L8",
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| 77 | /* Bytes per element */
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| 78 | 1,
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| 79 | /* Flags */
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| 80 | PFF_LUMINANCE | PFF_NATIVEENDIAN,
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| 81 | /* rbits, gbits, bbits, abits */
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| 82 | 8, 0, 0, 0,
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| 83 | /* Masks and shifts */
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| 84 | 0xFF, 0, 0, 0, 0, 0, 0, 0
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| 85 | },
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| 86 | //-----------------------------------------------------------------------
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| 87 | {"PF_L16",
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| 88 | /* Bytes per element */
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| 89 | 2,
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| 90 | /* Flags */
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| 91 | PFF_LUMINANCE | PFF_NATIVEENDIAN,
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| 92 | /* rbits, gbits, bbits, abits */
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| 93 | 16, 0, 0, 0,
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| 94 | /* Masks and shifts */
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| 95 | 0xFFFF, 0, 0, 0, 0, 0, 0, 0
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| 96 | },
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| 97 | //-----------------------------------------------------------------------
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| 98 | {"PF_A8",
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| 99 | /* Bytes per element */
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| 100 | 1,
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| 101 | /* Flags */
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| 102 | PFF_HASALPHA | PFF_NATIVEENDIAN,
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| 103 | /* rbits, gbits, bbits, abits */
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| 104 | 0, 0, 0, 8,
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| 105 | /* Masks and shifts */
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| 106 | 0, 0, 0, 0xFF, 0, 0, 0, 0
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| 107 | },
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| 108 | //-----------------------------------------------------------------------
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| 109 | {"PF_A4L4",
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| 110 | /* Bytes per element */
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| 111 | 1,
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| 112 | /* Flags */
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| 113 | PFF_HASALPHA | PFF_LUMINANCE | PFF_NATIVEENDIAN,
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| 114 | /* rbits, gbits, bbits, abits */
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| 115 | 4, 0, 0, 4,
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| 116 | /* Masks and shifts */
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| 117 | 0x0F, 0, 0, 0xF0, 0, 0, 0, 4
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| 118 | },
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| 119 | //-----------------------------------------------------------------------
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| 120 | {"PF_BYTE_LA",
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| 121 | /* Bytes per element */
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| 122 | 2,
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| 123 | /* Flags */
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| 124 | PFF_HASALPHA | PFF_LUMINANCE,
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| 125 | /* rbits, gbits, bbits, abits */
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| 126 | 8, 0, 0, 8,
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| 127 | /* Masks and shifts */
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| 128 | 0,0,0,0,0,0,0,0
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| 129 | },
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| 130 | //-----------------------------------------------------------------------
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| 131 | {"PF_R5G6B5",
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| 132 | /* Bytes per element */
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| 133 | 2,
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| 134 | /* Flags */
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| 135 | PFF_NATIVEENDIAN,
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| 136 | /* rbits, gbits, bbits, abits */
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| 137 | 5, 6, 5, 0,
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| 138 | /* Masks and shifts */
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| 139 | 0xF800, 0x07E0, 0x001F, 0,
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| 140 | 11, 5, 0, 0
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| 141 | },
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| 142 | //-----------------------------------------------------------------------
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| 143 | {"PF_B5G6R5",
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| 144 | /* Bytes per element */
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| 145 | 2,
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| 146 | /* Flags */
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| 147 | PFF_NATIVEENDIAN,
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| 148 | /* rbits, gbits, bbits, abits */
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| 149 | 5, 6, 5, 0,
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| 150 | /* Masks and shifts */
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| 151 | 0x001F, 0x07E0, 0xF800, 0,
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| 152 | 0, 5, 11, 0
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| 153 | },
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| 154 | //-----------------------------------------------------------------------
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| 155 | {"PF_A4R4G4B4",
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| 156 | /* Bytes per element */
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| 157 | 2,
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| 158 | /* Flags */
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| 159 | PFF_HASALPHA | PFF_NATIVEENDIAN,
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| 160 | /* rbits, gbits, bbits, abits */
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| 161 | 4, 4, 4, 4,
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| 162 | /* Masks and shifts */
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| 163 | 0x0F00, 0x00F0, 0x000F, 0xF000,
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| 164 | 8, 4, 0, 12
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| 165 | },
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| 166 | //-----------------------------------------------------------------------
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| 167 | {"PF_A1R5G5B5",
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| 168 | /* Bytes per element */
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| 169 | 2,
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| 170 | /* Flags */
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| 171 | PFF_HASALPHA | PFF_NATIVEENDIAN,
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| 172 | /* rbits, gbits, bbits, abits */
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| 173 | 5, 5, 5, 1,
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| 174 | /* Masks and shifts */
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| 175 | 0x7C00, 0x03E0, 0x001F, 0x8000,
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| 176 | 10, 5, 0, 15,
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| 177 | },
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| 178 | //-----------------------------------------------------------------------
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| 179 | {"PF_R8G8B8",
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| 180 | /* Bytes per element */
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| 181 | 3, // 24 bit integer -- special
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| 182 | /* Flags */
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| 183 | PFF_NATIVEENDIAN,
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| 184 | /* rbits, gbits, bbits, abits */
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| 185 | 8, 8, 8, 0,
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| 186 | /* Masks and shifts */
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| 187 | 0xFF0000, 0x00FF00, 0x0000FF, 0,
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| 188 | 16, 8, 0, 0
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| 189 | },
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| 190 | //-----------------------------------------------------------------------
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| 191 | {"PF_B8G8R8",
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| 192 | /* Bytes per element */
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| 193 | 3, // 24 bit integer -- special
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| 194 | /* Flags */
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| 195 | PFF_NATIVEENDIAN,
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| 196 | /* rbits, gbits, bbits, abits */
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| 197 | 8, 8, 8, 0,
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| 198 | /* Masks and shifts */
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| 199 | 0x0000FF, 0x00FF00, 0xFF0000, 0,
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| 200 | 0, 8, 16, 0
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| 201 | },
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| 202 | //-----------------------------------------------------------------------
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| 203 | {"PF_A8R8G8B8",
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| 204 | /* Bytes per element */
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| 205 | 4,
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| 206 | /* Flags */
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| 207 | PFF_HASALPHA | PFF_NATIVEENDIAN,
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| 208 | /* rbits, gbits, bbits, abits */
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| 209 | 8, 8, 8, 8,
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| 210 | /* Masks and shifts */
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| 211 | 0x00FF0000, 0x0000FF00, 0x000000FF, 0xFF000000,
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| 212 | 16, 8, 0, 24
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| 213 | },
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| 214 | //-----------------------------------------------------------------------
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| 215 | {"PF_A8B8G8R8",
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| 216 | /* Bytes per element */
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| 217 | 4,
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| 218 | /* Flags */
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| 219 | PFF_HASALPHA | PFF_NATIVEENDIAN,
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| 220 | /* rbits, gbits, bbits, abits */
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| 221 | 8, 8, 8, 8,
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| 222 | /* Masks and shifts */
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| 223 | 0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000,
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| 224 | 0, 8, 16, 24,
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| 225 | },
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| 226 | //-----------------------------------------------------------------------
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| 227 | {"PF_B8G8R8A8",
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| 228 | /* Bytes per element */
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| 229 | 4,
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| 230 | /* Flags */
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| 231 | PFF_HASALPHA | PFF_NATIVEENDIAN,
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| 232 | /* rbits, gbits, bbits, abits */
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| 233 | 8, 8, 8, 8,
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| 234 | /* Masks and shifts */
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| 235 | 0x0000FF00, 0x00FF0000, 0xFF000000, 0x000000FF,
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| 236 | 8, 16, 24, 0
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| 237 | },
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| 238 | //-----------------------------------------------------------------------
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| 239 | {"PF_A2R10G10B10",
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| 240 | /* Bytes per element */
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| 241 | 4,
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| 242 | /* Flags */
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| 243 | PFF_HASALPHA | PFF_NATIVEENDIAN,
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| 244 | /* rbits, gbits, bbits, abits */
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| 245 | 10, 10, 10, 2,
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| 246 | /* Masks and shifts */
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| 247 | 0x3FF00000, 0x000FFC00, 0x000003FF, 0xC0000000,
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| 248 | 20, 10, 0, 30
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| 249 | },
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| 250 | //-----------------------------------------------------------------------
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| 251 | {"PF_A2B10G10R10",
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| 252 | /* Bytes per element */
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| 253 | 4,
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| 254 | /* Flags */
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| 255 | PFF_HASALPHA | PFF_NATIVEENDIAN,
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| 256 | /* rbits, gbits, bbits, abits */
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| 257 | 10, 10, 10, 2,
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| 258 | /* Masks and shifts */
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| 259 | 0x000003FF, 0x000FFC00, 0x3FF00000, 0xC0000000,
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| 260 | 0, 10, 20, 30
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| 261 | },
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| 262 | //-----------------------------------------------------------------------
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| 263 | {"PF_DXT1",
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| 264 | /* Bytes per element */
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| 265 | 0,
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| 266 | /* Flags */
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| 267 | PFF_COMPRESSED | PFF_HASALPHA,
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| 268 | /* rbits, gbits, bbits, abits */
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| 269 | 0, 0, 0, 0,
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| 270 | /* Masks and shifts */
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| 271 | 0, 0, 0, 0, 0, 0, 0, 0
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| 272 | },
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| 273 | //-----------------------------------------------------------------------
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| 274 | {"PF_DXT2",
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| 275 | /* Bytes per element */
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| 276 | 0,
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| 277 | /* Flags */
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| 278 | PFF_COMPRESSED | PFF_HASALPHA,
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| 279 | /* rbits, gbits, bbits, abits */
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| 280 | 0, 0, 0, 0,
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| 281 | /* Masks and shifts */
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| 282 | 0, 0, 0, 0, 0, 0, 0, 0
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| 283 | },
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| 284 | //-----------------------------------------------------------------------
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| 285 | {"PF_DXT3",
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| 286 | /* Bytes per element */
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| 287 | 0,
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| 288 | /* Flags */
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| 289 | PFF_COMPRESSED | PFF_HASALPHA,
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| 290 | /* rbits, gbits, bbits, abits */
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| 291 | 0, 0, 0, 0,
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| 292 | /* Masks and shifts */
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| 293 | 0, 0, 0, 0, 0, 0, 0, 0
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| 294 | },
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| 295 | //-----------------------------------------------------------------------
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| 296 | {"PF_DXT4",
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| 297 | /* Bytes per element */
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| 298 | 0,
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| 299 | /* Flags */
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| 300 | PFF_COMPRESSED | PFF_HASALPHA,
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| 301 | /* rbits, gbits, bbits, abits */
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| 302 | 0, 0, 0, 0,
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| 303 | /* Masks and shifts */
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| 304 | 0, 0, 0, 0, 0, 0, 0, 0
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| 305 | },
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| 306 | //-----------------------------------------------------------------------
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| 307 | {"PF_DXT5",
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| 308 | /* Bytes per element */
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| 309 | 0,
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| 310 | /* Flags */
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| 311 | PFF_COMPRESSED | PFF_HASALPHA,
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| 312 | /* rbits, gbits, bbits, abits */
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| 313 | 0, 0, 0, 0,
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| 314 | /* Masks and shifts */
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| 315 | 0, 0, 0, 0, 0, 0, 0, 0
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| 316 | },
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| 317 | //-----------------------------------------------------------------------
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| 318 | {"PF_FLOAT16_RGB",
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| 319 | /* Bytes per element */
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| 320 | 6,
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| 321 | /* Flags */
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| 322 | PFF_FLOAT,
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| 323 | /* rbits, gbits, bbits, abits */
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| 324 | 16, 16, 16, 0,
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| 325 | /* Masks and shifts */
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| 326 | 0, 0, 0, 0, 0, 0, 0, 0
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| 327 | },
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| 328 | //-----------------------------------------------------------------------
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| 329 | {"PF_FLOAT16_RGBA",
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| 330 | /* Bytes per element */
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| 331 | 8,
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| 332 | /* Flags */
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| 333 | PFF_FLOAT,
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| 334 | /* rbits, gbits, bbits, abits */
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| 335 | 16, 16, 16, 16,
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| 336 | /* Masks and shifts */
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| 337 | 0, 0, 0, 0, 0, 0, 0, 0
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| 338 | },
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| 339 | //-----------------------------------------------------------------------
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| 340 | {"PF_FLOAT32_RGB",
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| 341 | /* Bytes per element */
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| 342 | 12,
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| 343 | /* Flags */
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| 344 | PFF_FLOAT,
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| 345 | /* rbits, gbits, bbits, abits */
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| 346 | 32, 32, 32, 0,
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| 347 | /* Masks and shifts */
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| 348 | 0, 0, 0, 0, 0, 0, 0, 0
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| 349 | },
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| 350 | //-----------------------------------------------------------------------
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| 351 | {"PF_FLOAT32_RGBA",
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| 352 | /* Bytes per element */
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| 353 | 16,
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| 354 | /* Flags */
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| 355 | PFF_FLOAT,
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| 356 | /* rbits, gbits, bbits, abits */
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| 357 | 32, 32, 32, 32,
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| 358 | /* Masks and shifts */
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| 359 | 0, 0, 0, 0, 0, 0, 0, 0
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| 360 | },
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| 361 | //-----------------------------------------------------------------------
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| 362 | {"PF_X8R8G8B8",
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| 363 | /* Bytes per element */
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| 364 | 4,
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| 365 | /* Flags */
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| 366 | PFF_NATIVEENDIAN,
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| 367 | /* rbits, gbits, bbits, abits */
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| 368 | 8, 8, 8, 0,
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| 369 | /* Masks and shifts */
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| 370 | 0x00FF0000, 0x0000FF00, 0x000000FF, 0xFF000000,
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| 371 | 16, 8, 0, 24
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| 372 | },
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| 373 | //-----------------------------------------------------------------------
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| 374 | {"PF_X8B8G8R8",
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| 375 | /* Bytes per element */
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| 376 | 4,
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| 377 | /* Flags */
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| 378 | PFF_NATIVEENDIAN,
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| 379 | /* rbits, gbits, bbits, abits */
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| 380 | 8, 8, 8, 0,
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| 381 | /* Masks and shifts */
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| 382 | 0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000,
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| 383 | 0, 8, 16, 24
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| 384 | },
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| 385 | //-----------------------------------------------------------------------
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| 386 | {"PF_R8G8B8A8",
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| 387 | /* Bytes per element */
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| 388 | 4,
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| 389 | /* Flags */
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| 390 | PFF_HASALPHA | PFF_NATIVEENDIAN,
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| 391 | /* rbits, gbits, bbits, abits */
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| 392 | 8, 8, 8, 8,
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| 393 | /* Masks and shifts */
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| 394 | 0xFF000000, 0x00FF0000, 0x0000FF00, 0x000000FF,
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| 395 | 24, 16, 8, 0
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| 396 | },
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| 397 | //-----------------------------------------------------------------------
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| 398 | {"PF_DEPTH",
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| 399 | /* Bytes per element */
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| 400 | 4,
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| 401 | /* Flags */
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| 402 | PFF_DEPTH,
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| 403 | /* rbits, gbits, bbits, abits */
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| 404 | 0, 0, 0, 0,
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| 405 | /* Masks and shifts */
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| 406 | 0, 0, 0, 0, 0, 0, 0, 0
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| 407 | },
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| 408 | //-----------------------------------------------------------------------
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| 409 | {"PF_SHORT_RGBA",
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| 410 | /* Bytes per element */
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| 411 | 8,
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| 412 | /* Flags */
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| 413 | PFF_HASALPHA,
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| 414 | /* rbits, gbits, bbits, abits */
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| 415 | 16, 16, 16, 16,
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| 416 | /* Masks and shifts */
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| 417 | 0, 0, 0, 0, 0, 0, 0, 0
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| 418 | },
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| 419 | //-----------------------------------------------------------------------
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| 420 | {"PF_R3G3B2",
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| 421 | /* Bytes per element */
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| 422 | 1,
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| 423 | /* Flags */
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| 424 | PFF_NATIVEENDIAN,
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| 425 | /* rbits, gbits, bbits, abits */
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| 426 | 3, 3, 2, 0,
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| 427 | /* Masks and shifts */
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| 428 | 0xE0, 0x1C, 0x03, 0,
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| 429 | 5, 2, 0, 0
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| 430 | },
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| 431 | //-----------------------------------------------------------------------
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| 432 | {"PF_FLOAT16_R",
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| 433 | /* Bytes per element */
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| 434 | 2,
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| 435 | /* Flags */
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| 436 | PFF_FLOAT,
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| 437 | /* rbits, gbits, bbits, abits */
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| 438 | 16, 0, 0, 0,
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| 439 | /* Masks and shifts */
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| 440 | 0, 0, 0, 0, 0, 0, 0, 0
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| 441 | },
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| 442 | //-----------------------------------------------------------------------
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| 443 | {"PF_FLOAT32_R",
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| 444 | /* Bytes per element */
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| 445 | 4,
|
---|
| 446 | /* Flags */
|
---|
| 447 | PFF_FLOAT,
|
---|
| 448 | /* rbits, gbits, bbits, abits */
|
---|
| 449 | 32, 0, 0, 0,
|
---|
| 450 | /* Masks and shifts */
|
---|
| 451 | 0, 0, 0, 0, 0, 0, 0, 0
|
---|
| 452 | },
|
---|
| 453 | };
|
---|
| 454 | //-----------------------------------------------------------------------
|
---|
| 455 | size_t PixelBox::getConsecutiveSize() const
|
---|
| 456 | {
|
---|
| 457 | return PixelUtil::getMemorySize(getWidth(), getHeight(), getDepth(), format);
|
---|
| 458 | }
|
---|
| 459 | PixelBox PixelBox::getSubVolume(const Box &def) const
|
---|
| 460 | {
|
---|
| 461 | if(PixelUtil::isCompressed(format))
|
---|
| 462 | {
|
---|
| 463 | if(def.left == left && def.top == top && def.front == front &&
|
---|
| 464 | def.right == right && def.bottom == bottom && def.back == back)
|
---|
| 465 | {
|
---|
| 466 | // Entire buffer is being queried
|
---|
| 467 | return *this;
|
---|
| 468 | }
|
---|
| 469 | OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS, "Cannot return subvolume of compressed PixelBuffer", "PixelBox::getSubVolume");
|
---|
| 470 | }
|
---|
| 471 | if(!contains(def))
|
---|
| 472 | OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS, "Bounds out of range", "PixelBox::getSubVolume");
|
---|
| 473 |
|
---|
| 474 | const size_t elemSize = PixelUtil::getNumElemBytes(format);
|
---|
| 475 | // Calculate new data origin
|
---|
| 476 | PixelBox rval(def, format, ((uint8*)data)
|
---|
| 477 | + ((def.left-left)*elemSize)
|
---|
| 478 | + ((def.top-top)*rowPitch*elemSize)
|
---|
| 479 | + ((def.front-front)*slicePitch*elemSize)
|
---|
| 480 | );
|
---|
| 481 |
|
---|
| 482 | rval.rowPitch = rowPitch;
|
---|
| 483 | rval.slicePitch = slicePitch;
|
---|
| 484 | rval.format = format;
|
---|
| 485 |
|
---|
| 486 | return rval;
|
---|
| 487 | }
|
---|
| 488 | //-----------------------------------------------------------------------
|
---|
| 489 | /**
|
---|
| 490 | * Directly get the description record for provided pixel format. For debug builds,
|
---|
| 491 | * this checks the bounds of fmt with an assertion.
|
---|
| 492 | */
|
---|
| 493 | static inline const PixelFormatDescription &getDescriptionFor(const PixelFormat fmt)
|
---|
| 494 | {
|
---|
| 495 | const int ord = (int)fmt;
|
---|
| 496 | assert(ord>=0 && ord<PF_COUNT);
|
---|
| 497 |
|
---|
| 498 | return _pixelFormats[ord];
|
---|
| 499 | }
|
---|
| 500 | //-----------------------------------------------------------------------
|
---|
| 501 | size_t PixelUtil::getNumElemBytes( PixelFormat format )
|
---|
| 502 | {
|
---|
| 503 | return getDescriptionFor(format).elemBytes;
|
---|
| 504 | }
|
---|
| 505 | //-----------------------------------------------------------------------
|
---|
| 506 | size_t PixelUtil::getMemorySize(size_t width, size_t height, size_t depth, PixelFormat format)
|
---|
| 507 | {
|
---|
| 508 | if(isCompressed(format))
|
---|
| 509 | {
|
---|
| 510 | switch(format)
|
---|
| 511 | {
|
---|
| 512 | // DXT formats work by dividing the image into 4x4 blocks, then encoding each
|
---|
| 513 | // 4x4 block with a certain number of bytes. DXT can only be used on 2D images.
|
---|
| 514 | case PF_DXT1:
|
---|
| 515 | assert(depth == 1);
|
---|
| 516 | return ((width+3)/4)*((height+3)/4)*8;
|
---|
| 517 | case PF_DXT2:
|
---|
| 518 | case PF_DXT3:
|
---|
| 519 | case PF_DXT4:
|
---|
| 520 | case PF_DXT5:
|
---|
| 521 | assert(depth == 1);
|
---|
| 522 | return ((width+3)/4)*((height+3)/4)*16;
|
---|
| 523 | default:
|
---|
| 524 | OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS, "Invalid compressed pixel format",
|
---|
| 525 | "PixelUtil::getMemorySize");
|
---|
| 526 | }
|
---|
| 527 | }
|
---|
| 528 | else
|
---|
| 529 | {
|
---|
| 530 | return width*height*depth*getNumElemBytes(format);
|
---|
| 531 | }
|
---|
| 532 | }
|
---|
| 533 | //-----------------------------------------------------------------------
|
---|
| 534 | size_t PixelUtil::getNumElemBits( PixelFormat format )
|
---|
| 535 | {
|
---|
| 536 | return getDescriptionFor(format).elemBytes * 8;
|
---|
| 537 | }
|
---|
| 538 | //-----------------------------------------------------------------------
|
---|
| 539 | unsigned int PixelUtil::getFlags( PixelFormat format )
|
---|
| 540 | {
|
---|
| 541 | return getDescriptionFor(format).flags;
|
---|
| 542 | }
|
---|
| 543 | //-----------------------------------------------------------------------
|
---|
| 544 | bool PixelUtil::hasAlpha(PixelFormat format)
|
---|
| 545 | {
|
---|
| 546 | return (PixelUtil::getFlags(format) & PFF_HASALPHA) > 0;
|
---|
| 547 | }
|
---|
| 548 | //-----------------------------------------------------------------------
|
---|
| 549 | bool PixelUtil::isFloatingPoint(PixelFormat format)
|
---|
| 550 | {
|
---|
| 551 | return (PixelUtil::getFlags(format) & PFF_FLOAT) > 0;
|
---|
| 552 | }
|
---|
| 553 | //-----------------------------------------------------------------------
|
---|
| 554 | bool PixelUtil::isCompressed(PixelFormat format)
|
---|
| 555 | {
|
---|
| 556 | return (PixelUtil::getFlags(format) & PFF_COMPRESSED) > 0;
|
---|
| 557 | }
|
---|
| 558 | //-----------------------------------------------------------------------
|
---|
| 559 | bool PixelUtil::isDepth(PixelFormat format)
|
---|
| 560 | {
|
---|
| 561 | return (PixelUtil::getFlags(format) & PFF_DEPTH) > 0;
|
---|
| 562 | }
|
---|
| 563 | //-----------------------------------------------------------------------
|
---|
| 564 | bool PixelUtil::isNativeEndian(PixelFormat format)
|
---|
| 565 | {
|
---|
| 566 | return (PixelUtil::getFlags(format) & PFF_NATIVEENDIAN) > 0;
|
---|
| 567 | }
|
---|
| 568 | //-----------------------------------------------------------------------
|
---|
| 569 | bool PixelUtil::isLuminance(PixelFormat format)
|
---|
| 570 | {
|
---|
| 571 | return (PixelUtil::getFlags(format) & PFF_LUMINANCE) > 0;
|
---|
| 572 | }
|
---|
| 573 | //-----------------------------------------------------------------------
|
---|
| 574 | bool PixelUtil::isValidExtent(size_t width, size_t height, size_t depth, PixelFormat format)
|
---|
| 575 | {
|
---|
| 576 | if(isCompressed(format))
|
---|
| 577 | {
|
---|
| 578 | switch(format)
|
---|
| 579 | {
|
---|
| 580 | case PF_DXT1:
|
---|
| 581 | case PF_DXT2:
|
---|
| 582 | case PF_DXT3:
|
---|
| 583 | case PF_DXT4:
|
---|
| 584 | case PF_DXT5:
|
---|
| 585 | return ((width&3)==0 && (height&3)==0 && depth==1);
|
---|
| 586 | default:
|
---|
| 587 | return true;
|
---|
| 588 | }
|
---|
| 589 | }
|
---|
| 590 | else
|
---|
| 591 | {
|
---|
| 592 | return true;
|
---|
| 593 | }
|
---|
| 594 | }
|
---|
| 595 | //-----------------------------------------------------------------------
|
---|
| 596 | void PixelUtil::getBitDepths(PixelFormat format, int rgba[4])
|
---|
| 597 | {
|
---|
| 598 | const PixelFormatDescription &des = getDescriptionFor(format);
|
---|
| 599 | rgba[0] = des.rbits;
|
---|
| 600 | rgba[1] = des.gbits;
|
---|
| 601 | rgba[2] = des.bbits;
|
---|
| 602 | rgba[3] = des.abits;
|
---|
| 603 | }
|
---|
| 604 | //-----------------------------------------------------------------------
|
---|
| 605 | void PixelUtil::getBitMasks(PixelFormat format, uint32 rgba[4])
|
---|
| 606 | {
|
---|
| 607 | const PixelFormatDescription &des = getDescriptionFor(format);
|
---|
| 608 | rgba[0] = des.rmask;
|
---|
| 609 | rgba[1] = des.gmask;
|
---|
| 610 | rgba[2] = des.bmask;
|
---|
| 611 | rgba[3] = des.amask;
|
---|
| 612 | }
|
---|
| 613 | //-----------------------------------------------------------------------
|
---|
| 614 | String PixelUtil::getFormatName(PixelFormat srcformat)
|
---|
| 615 | {
|
---|
| 616 | return getDescriptionFor(srcformat).name;
|
---|
| 617 | }
|
---|
| 618 | //-----------------------------------------------------------------------
|
---|
| 619 | bool PixelUtil::isAccessible(PixelFormat srcformat) {
|
---|
| 620 | unsigned int flags = getFlags(srcformat);
|
---|
| 621 | return !((flags & PFF_COMPRESSED) || (flags & PFF_DEPTH));
|
---|
| 622 | }
|
---|
| 623 | //-----------------------------------------------------------------------
|
---|
| 624 | /*************************************************************************
|
---|
| 625 | * Pixel packing/unpacking utilities
|
---|
| 626 | */
|
---|
| 627 | void PixelUtil::packColour(const ColourValue &colour, const PixelFormat pf, const void* dest)
|
---|
| 628 | {
|
---|
| 629 | packColour(colour.r, colour.g, colour.b, colour.a, pf, dest);
|
---|
| 630 | }
|
---|
| 631 | //-----------------------------------------------------------------------
|
---|
| 632 | void PixelUtil::packColour(const uint8 r, const uint8 g, const uint8 b, const uint8 a, const PixelFormat pf, const void* dest)
|
---|
| 633 | {
|
---|
| 634 | const PixelFormatDescription &des = getDescriptionFor(pf);
|
---|
| 635 | if(des.flags & PFF_NATIVEENDIAN) {
|
---|
| 636 | // Shortcut for integer formats packing
|
---|
| 637 | unsigned int value = ((Bitwise::fixedToFixed(r, 8, des.rbits)<<des.rshift) & des.rmask) |
|
---|
| 638 | ((Bitwise::fixedToFixed(g, 8, des.gbits)<<des.gshift) & des.gmask) |
|
---|
| 639 | ((Bitwise::fixedToFixed(b, 8, des.bbits)<<des.bshift) & des.bmask) |
|
---|
| 640 | ((Bitwise::fixedToFixed(a, 8, des.abits)<<des.ashift) & des.amask);
|
---|
| 641 | // And write to memory
|
---|
| 642 | Bitwise::intWrite(dest, des.elemBytes, value);
|
---|
| 643 | } else {
|
---|
| 644 | // Convert to float
|
---|
| 645 | packColour((float)r/255.0f,(float)g/255.0f,(float)b/255.0f,(float)a/255.0f, pf, dest);
|
---|
| 646 | }
|
---|
| 647 | }
|
---|
| 648 | //-----------------------------------------------------------------------
|
---|
| 649 | void PixelUtil::packColour(const float r, const float g, const float b, const float a, const PixelFormat pf, const void* dest)
|
---|
| 650 | {
|
---|
| 651 | // Catch-it-all here
|
---|
| 652 | const PixelFormatDescription &des = getDescriptionFor(pf);
|
---|
| 653 | if(des.flags & PFF_NATIVEENDIAN) {
|
---|
| 654 | // Do the packing
|
---|
| 655 | //std::cerr << dest << " " << r << " " << g << " " << b << " " << a << std::endl;
|
---|
| 656 | const unsigned int value = ((Bitwise::floatToFixed(r, des.rbits)<<des.rshift) & des.rmask) |
|
---|
| 657 | ((Bitwise::floatToFixed(g, des.gbits)<<des.gshift) & des.gmask) |
|
---|
| 658 | ((Bitwise::floatToFixed(b, des.bbits)<<des.bshift) & des.bmask) |
|
---|
| 659 | ((Bitwise::floatToFixed(a, des.abits)<<des.ashift) & des.amask);
|
---|
| 660 | // And write to memory
|
---|
| 661 | Bitwise::intWrite(dest, des.elemBytes, value);
|
---|
| 662 | } else {
|
---|
| 663 | switch(pf)
|
---|
| 664 | {
|
---|
| 665 | case PF_FLOAT32_R:
|
---|
| 666 | ((float*)dest)[0] = r;
|
---|
| 667 | break;
|
---|
| 668 | case PF_FLOAT32_RGB:
|
---|
| 669 | ((float*)dest)[0] = r;
|
---|
| 670 | ((float*)dest)[1] = g;
|
---|
| 671 | ((float*)dest)[2] = b;
|
---|
| 672 | break;
|
---|
| 673 | case PF_FLOAT32_RGBA:
|
---|
| 674 | ((float*)dest)[0] = r;
|
---|
| 675 | ((float*)dest)[1] = g;
|
---|
| 676 | ((float*)dest)[2] = b;
|
---|
| 677 | ((float*)dest)[3] = a;
|
---|
| 678 | break;
|
---|
| 679 | case PF_FLOAT16_R:
|
---|
| 680 | ((uint16*)dest)[0] = Bitwise::floatToHalf(r);
|
---|
| 681 | break;
|
---|
| 682 | case PF_FLOAT16_RGB:
|
---|
| 683 | ((uint16*)dest)[0] = Bitwise::floatToHalf(r);
|
---|
| 684 | ((uint16*)dest)[1] = Bitwise::floatToHalf(g);
|
---|
| 685 | ((uint16*)dest)[2] = Bitwise::floatToHalf(b);
|
---|
| 686 | break;
|
---|
| 687 | case PF_FLOAT16_RGBA:
|
---|
| 688 | ((uint16*)dest)[0] = Bitwise::floatToHalf(r);
|
---|
| 689 | ((uint16*)dest)[1] = Bitwise::floatToHalf(g);
|
---|
| 690 | ((uint16*)dest)[2] = Bitwise::floatToHalf(b);
|
---|
| 691 | ((uint16*)dest)[3] = Bitwise::floatToHalf(a);
|
---|
| 692 | break;
|
---|
| 693 | case PF_SHORT_RGBA:
|
---|
| 694 | ((uint16*)dest)[0] = Bitwise::floatToFixed(r, 16);
|
---|
| 695 | ((uint16*)dest)[1] = Bitwise::floatToFixed(g, 16);
|
---|
| 696 | ((uint16*)dest)[2] = Bitwise::floatToFixed(b, 16);
|
---|
| 697 | ((uint16*)dest)[3] = Bitwise::floatToFixed(a, 16);
|
---|
| 698 | break;
|
---|
| 699 | case PF_BYTE_LA:
|
---|
| 700 | ((uint8*)dest)[0] = Bitwise::floatToFixed(r, 8);
|
---|
| 701 | ((uint8*)dest)[1] = Bitwise::floatToFixed(a, 8);
|
---|
| 702 | break;
|
---|
| 703 | default:
|
---|
| 704 | // Not yet supported
|
---|
| 705 | OGRE_EXCEPT(
|
---|
| 706 | Exception::UNIMPLEMENTED_FEATURE,
|
---|
| 707 | "pack to "+getFormatName(pf)+" not implemented",
|
---|
| 708 | "PixelUtil::packColour");
|
---|
| 709 | break;
|
---|
| 710 | }
|
---|
| 711 | }
|
---|
| 712 | }
|
---|
| 713 | //-----------------------------------------------------------------------
|
---|
| 714 | void PixelUtil::unpackColour(ColourValue *colour, PixelFormat pf, const void* src)
|
---|
| 715 | {
|
---|
| 716 | unpackColour(&colour->r, &colour->g, &colour->b, &colour->a, pf, src);
|
---|
| 717 | }
|
---|
| 718 | //-----------------------------------------------------------------------
|
---|
| 719 | void PixelUtil::unpackColour(uint8 *r, uint8 *g, uint8 *b, uint8 *a, PixelFormat pf, const void* src)
|
---|
| 720 | {
|
---|
| 721 | const PixelFormatDescription &des = getDescriptionFor(pf);
|
---|
| 722 | if(des.flags & PFF_NATIVEENDIAN) {
|
---|
| 723 | // Shortcut for integer formats unpacking
|
---|
| 724 | const unsigned int value = Bitwise::intRead(src, des.elemBytes);
|
---|
| 725 | if(des.flags & PFF_LUMINANCE)
|
---|
| 726 | {
|
---|
| 727 | // Luminance format -- only rbits used
|
---|
| 728 | *r = *g = *b = Bitwise::fixedToFixed(
|
---|
| 729 | (value & des.rmask)>>des.rshift, des.rbits, 8);
|
---|
| 730 | }
|
---|
| 731 | else
|
---|
| 732 | {
|
---|
| 733 | *r = Bitwise::fixedToFixed((value & des.rmask)>>des.rshift, des.rbits, 8);
|
---|
| 734 | *g = Bitwise::fixedToFixed((value & des.gmask)>>des.gshift, des.gbits, 8);
|
---|
| 735 | *b = Bitwise::fixedToFixed((value & des.bmask)>>des.bshift, des.bbits, 8);
|
---|
| 736 | }
|
---|
| 737 | if(des.flags & PFF_HASALPHA)
|
---|
| 738 | {
|
---|
| 739 | *a = Bitwise::fixedToFixed((value & des.amask)>>des.ashift, des.abits, 8);
|
---|
| 740 | }
|
---|
| 741 | else
|
---|
| 742 | {
|
---|
| 743 | *a = 255; // No alpha, default a component to full
|
---|
| 744 | }
|
---|
| 745 | } else {
|
---|
| 746 | // Do the operation with the more generic floating point
|
---|
| 747 | float rr, gg, bb, aa;
|
---|
| 748 | unpackColour(&rr,&gg,&bb,&aa, pf, src);
|
---|
| 749 | *r = Bitwise::floatToFixed(rr, 8);
|
---|
| 750 | *g = Bitwise::floatToFixed(gg, 8);
|
---|
| 751 | *b = Bitwise::floatToFixed(bb, 8);
|
---|
| 752 | *a = Bitwise::floatToFixed(aa, 8);
|
---|
| 753 | }
|
---|
| 754 | }
|
---|
| 755 | //-----------------------------------------------------------------------
|
---|
| 756 | void PixelUtil::unpackColour(float *r, float *g, float *b, float *a,
|
---|
| 757 | PixelFormat pf, const void* src)
|
---|
| 758 | {
|
---|
| 759 | const PixelFormatDescription &des = getDescriptionFor(pf);
|
---|
| 760 | if(des.flags & PFF_NATIVEENDIAN) {
|
---|
| 761 | // Shortcut for integer formats unpacking
|
---|
| 762 | const unsigned int value = Bitwise::intRead(src, des.elemBytes);
|
---|
| 763 | if(des.flags & PFF_LUMINANCE)
|
---|
| 764 | {
|
---|
| 765 | // Luminance format -- only rbits used
|
---|
| 766 | *r = *g = *b = Bitwise::fixedToFloat(
|
---|
| 767 | (value & des.rmask)>>des.rshift, des.rbits);
|
---|
| 768 | }
|
---|
| 769 | else
|
---|
| 770 | {
|
---|
| 771 | *r = Bitwise::fixedToFloat((value & des.rmask)>>des.rshift, des.rbits);
|
---|
| 772 | *g = Bitwise::fixedToFloat((value & des.gmask)>>des.gshift, des.gbits);
|
---|
| 773 | *b = Bitwise::fixedToFloat((value & des.bmask)>>des.bshift, des.bbits);
|
---|
| 774 | }
|
---|
| 775 | if(des.flags & PFF_HASALPHA)
|
---|
| 776 | {
|
---|
| 777 | *a = Bitwise::fixedToFloat((value & des.amask)>>des.ashift, des.abits);
|
---|
| 778 | }
|
---|
| 779 | else
|
---|
| 780 | {
|
---|
| 781 | *a = 1.0f; // No alpha, default a component to full
|
---|
| 782 | }
|
---|
| 783 | } else {
|
---|
| 784 | switch(pf)
|
---|
| 785 | {
|
---|
| 786 | case PF_FLOAT32_R:
|
---|
| 787 | *r = *g = *b = ((float*)src)[0];
|
---|
| 788 | *a = 1.0f;
|
---|
| 789 | break;
|
---|
| 790 | case PF_FLOAT32_RGB:
|
---|
| 791 | *r = ((float*)src)[0];
|
---|
| 792 | *g = ((float*)src)[1];
|
---|
| 793 | *b = ((float*)src)[2];
|
---|
| 794 | *a = 1.0f;
|
---|
| 795 | break;
|
---|
| 796 | case PF_FLOAT32_RGBA:
|
---|
| 797 | *r = ((float*)src)[0];
|
---|
| 798 | *g = ((float*)src)[1];
|
---|
| 799 | *b = ((float*)src)[2];
|
---|
| 800 | *a = ((float*)src)[3];
|
---|
| 801 | break;
|
---|
| 802 | case PF_FLOAT16_R:
|
---|
| 803 | *r = *g = *b = Bitwise::halfToFloat(((uint16*)src)[0]);
|
---|
| 804 | *a = 1.0f;
|
---|
| 805 | break;
|
---|
| 806 | case PF_FLOAT16_RGB:
|
---|
| 807 | *r = Bitwise::halfToFloat(((uint16*)src)[0]);
|
---|
| 808 | *g = Bitwise::halfToFloat(((uint16*)src)[1]);
|
---|
| 809 | *b = Bitwise::halfToFloat(((uint16*)src)[2]);
|
---|
| 810 | *a = 1.0f;
|
---|
| 811 | break;
|
---|
| 812 | case PF_FLOAT16_RGBA:
|
---|
| 813 | *r = Bitwise::halfToFloat(((uint16*)src)[0]);
|
---|
| 814 | *g = Bitwise::halfToFloat(((uint16*)src)[1]);
|
---|
| 815 | *b = Bitwise::halfToFloat(((uint16*)src)[2]);
|
---|
| 816 | *a = Bitwise::halfToFloat(((uint16*)src)[3]);
|
---|
| 817 | break;
|
---|
| 818 | case PF_SHORT_RGBA:
|
---|
| 819 | *r = Bitwise::fixedToFloat(((uint16*)src)[0], 16);
|
---|
| 820 | *g = Bitwise::fixedToFloat(((uint16*)src)[1], 16);
|
---|
| 821 | *b = Bitwise::fixedToFloat(((uint16*)src)[2], 16);
|
---|
| 822 | *a = Bitwise::fixedToFloat(((uint16*)src)[3], 16);
|
---|
| 823 | break;
|
---|
| 824 | case PF_BYTE_LA:
|
---|
| 825 | *r = *g = *b = Bitwise::fixedToFloat(((uint8*)src)[0], 8);
|
---|
| 826 | *a = Bitwise::fixedToFloat(((uint8*)src)[1], 8);
|
---|
| 827 | break;
|
---|
| 828 | default:
|
---|
| 829 | // Not yet supported
|
---|
| 830 | OGRE_EXCEPT(Exception::UNIMPLEMENTED_FEATURE,
|
---|
| 831 | "unpack from "+getFormatName(pf)+" not implemented",
|
---|
| 832 | "PixelUtil::unpackColour");
|
---|
| 833 | break;
|
---|
| 834 | }
|
---|
| 835 | }
|
---|
| 836 | }
|
---|
| 837 | //-----------------------------------------------------------------------
|
---|
| 838 | /* Convert pixels from one format to another */
|
---|
| 839 | void PixelUtil::bulkPixelConversion(void *srcp, PixelFormat srcFormat,
|
---|
| 840 | void *destp, PixelFormat dstFormat, unsigned int count)
|
---|
| 841 | {
|
---|
| 842 | PixelBox src(count, 1, 1, srcFormat, srcp),
|
---|
| 843 | dst(count, 1, 1, dstFormat, destp);
|
---|
| 844 |
|
---|
| 845 | bulkPixelConversion(src, dst);
|
---|
| 846 | }
|
---|
| 847 | //-----------------------------------------------------------------------
|
---|
| 848 | void PixelUtil::bulkPixelConversion(const PixelBox &src, const PixelBox &dst)
|
---|
| 849 | {
|
---|
| 850 | assert(src.getWidth() == dst.getWidth() &&
|
---|
| 851 | src.getHeight() == dst.getHeight() &&
|
---|
| 852 | src.getDepth() == dst.getDepth());
|
---|
| 853 |
|
---|
| 854 | // Check for compressed formats, we don't support decompression, compression or recoding
|
---|
| 855 | if(PixelUtil::isCompressed(src.format) || PixelUtil::isCompressed(dst.format))
|
---|
| 856 | {
|
---|
| 857 | if(src.format == dst.format)
|
---|
| 858 | {
|
---|
| 859 | memcpy(dst.data, src.data, src.getConsecutiveSize());
|
---|
| 860 | return;
|
---|
| 861 | }
|
---|
| 862 | else
|
---|
| 863 | {
|
---|
| 864 | OGRE_EXCEPT(Exception::UNIMPLEMENTED_FEATURE,
|
---|
| 865 | "This method can not be used to compress or decompress images",
|
---|
| 866 | "PixelUtil::bulkPixelConversion");
|
---|
| 867 | }
|
---|
| 868 | }
|
---|
| 869 |
|
---|
| 870 | // The easy case
|
---|
| 871 | if(src.format == dst.format) {
|
---|
| 872 | // Everything consecutive?
|
---|
| 873 | if(src.isConsecutive() && dst.isConsecutive())
|
---|
| 874 | {
|
---|
| 875 | memcpy(dst.data, src.data, src.getConsecutiveSize());
|
---|
| 876 | return;
|
---|
| 877 | }
|
---|
| 878 |
|
---|
| 879 | uint8 *srcptr = static_cast<uint8*>(src.data);
|
---|
| 880 | uint8 *dstptr = static_cast<uint8*>(dst.data);
|
---|
| 881 | const size_t srcPixelSize = PixelUtil::getNumElemBytes(src.format);
|
---|
| 882 | const size_t dstPixelSize = PixelUtil::getNumElemBytes(dst.format);
|
---|
| 883 |
|
---|
| 884 | // Calculate pitches+skips in bytes
|
---|
| 885 | const size_t srcRowPitchBytes = src.rowPitch*srcPixelSize;
|
---|
| 886 | //const size_t srcRowSkipBytes = src.getRowSkip()*srcPixelSize;
|
---|
| 887 | const size_t srcSliceSkipBytes = src.getSliceSkip()*srcPixelSize;
|
---|
| 888 |
|
---|
| 889 | const size_t dstRowPitchBytes = dst.rowPitch*dstPixelSize;
|
---|
| 890 | //const size_t dstRowSkipBytes = dst.getRowSkip()*dstPixelSize;
|
---|
| 891 | const size_t dstSliceSkipBytes = dst.getSliceSkip()*dstPixelSize;
|
---|
| 892 |
|
---|
| 893 | // Otherwise, copy per row
|
---|
| 894 | const size_t rowSize = src.getWidth()*srcPixelSize;
|
---|
| 895 | for(size_t z=src.front; z<src.back; z++)
|
---|
| 896 | {
|
---|
| 897 | for(size_t y=src.top; y<src.bottom; y++)
|
---|
| 898 | {
|
---|
| 899 | memcpy(dstptr, srcptr, rowSize);
|
---|
| 900 | srcptr += srcRowPitchBytes;
|
---|
| 901 | dstptr += dstRowPitchBytes;
|
---|
| 902 | }
|
---|
| 903 | srcptr += srcSliceSkipBytes;
|
---|
| 904 | dstptr += dstSliceSkipBytes;
|
---|
| 905 | }
|
---|
| 906 | return;
|
---|
| 907 | }
|
---|
| 908 | // Converting to PF_X8R8G8B8 is exactly the same as converting to
|
---|
| 909 | // PF_A8R8G8B8. (same with PF_X8B8G8R8 and PF_A8B8G8R8)
|
---|
| 910 | if(dst.format == PF_X8R8G8B8 || dst.format == PF_X8B8G8R8)
|
---|
| 911 | {
|
---|
| 912 | // Do the same conversion, with PF_A8R8G8B8, which has a lot of
|
---|
| 913 | // optimized conversions
|
---|
| 914 | PixelBox tempdst = dst;
|
---|
| 915 | tempdst.format = dst.format==PF_X8R8G8B8?PF_A8R8G8B8:PF_A8B8G8R8;
|
---|
| 916 | bulkPixelConversion(src, tempdst);
|
---|
| 917 | return;
|
---|
| 918 | }
|
---|
| 919 | // Converting from PF_X8R8G8B8 is exactly the same as converting from
|
---|
| 920 | // PF_A8R8G8B8, given that the destination format does not have alpha.
|
---|
| 921 | if((src.format == PF_X8R8G8B8||src.format == PF_X8B8G8R8) && !hasAlpha(dst.format))
|
---|
| 922 | {
|
---|
| 923 | // Do the same conversion, with PF_A8R8G8B8, which has a lot of
|
---|
| 924 | // optimized conversions
|
---|
| 925 | PixelBox tempsrc = src;
|
---|
| 926 | tempsrc.format = src.format==PF_X8R8G8B8?PF_A8R8G8B8:PF_A8B8G8R8;
|
---|
| 927 | bulkPixelConversion(tempsrc, dst);
|
---|
| 928 | return;
|
---|
| 929 | }
|
---|
| 930 |
|
---|
| 931 | // NB VC6 can't handle the templates required for optimised conversion, tough
|
---|
| 932 | #if OGRE_COMPILER != OGRE_COMPILER_MSVC || OGRE_COMP_VER >= 1300
|
---|
| 933 | // Is there a specialized, inlined, conversion?
|
---|
| 934 | if(doOptimizedConversion(src, dst))
|
---|
| 935 | {
|
---|
| 936 | // If so, good
|
---|
| 937 | return;
|
---|
| 938 | }
|
---|
| 939 | #endif
|
---|
| 940 |
|
---|
| 941 | uint8 *srcptr = static_cast<uint8*>(src.data);
|
---|
| 942 | uint8 *dstptr = static_cast<uint8*>(dst.data);
|
---|
| 943 | const size_t srcPixelSize = PixelUtil::getNumElemBytes(src.format);
|
---|
| 944 | const size_t dstPixelSize = PixelUtil::getNumElemBytes(dst.format);
|
---|
| 945 |
|
---|
| 946 | // Calculate pitches+skips in bytes
|
---|
| 947 | const size_t srcRowSkipBytes = src.getRowSkip()*srcPixelSize;
|
---|
| 948 | const size_t srcSliceSkipBytes = src.getSliceSkip()*srcPixelSize;
|
---|
| 949 | const size_t dstRowSkipBytes = dst.getRowSkip()*dstPixelSize;
|
---|
| 950 | const size_t dstSliceSkipBytes = dst.getSliceSkip()*dstPixelSize;
|
---|
| 951 |
|
---|
| 952 | // The brute force fallback
|
---|
| 953 | float r,g,b,a;
|
---|
| 954 | for(size_t z=src.front; z<src.back; z++)
|
---|
| 955 | {
|
---|
| 956 | for(size_t y=src.top; y<src.bottom; y++)
|
---|
| 957 | {
|
---|
| 958 | for(size_t x=src.left; x<src.right; x++)
|
---|
| 959 | {
|
---|
| 960 | unpackColour(&r, &g, &b, &a, src.format, srcptr);
|
---|
| 961 | packColour(r, g, b, a, dst.format, dstptr);
|
---|
| 962 | srcptr += srcPixelSize;
|
---|
| 963 | dstptr += dstPixelSize;
|
---|
| 964 | }
|
---|
| 965 | srcptr += srcRowSkipBytes;
|
---|
| 966 | dstptr += dstRowSkipBytes;
|
---|
| 967 | }
|
---|
| 968 | srcptr += srcSliceSkipBytes;
|
---|
| 969 | dstptr += dstSliceSkipBytes;
|
---|
| 970 | }
|
---|
| 971 | }
|
---|
| 972 |
|
---|
| 973 | }
|
---|