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,
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446 | /* Flags */
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447 | PFF_FLOAT,
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448 | /* rbits, gbits, bbits, abits */
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449 | 32, 0, 0, 0,
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450 | /* Masks and shifts */
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451 | 0, 0, 0, 0, 0, 0, 0, 0
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452 | },
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453 | };
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454 | //-----------------------------------------------------------------------
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455 | size_t PixelBox::getConsecutiveSize() const
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456 | {
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457 | return PixelUtil::getMemorySize(getWidth(), getHeight(), getDepth(), format);
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458 | }
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459 | PixelBox PixelBox::getSubVolume(const Box &def) const
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460 | {
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461 | if(PixelUtil::isCompressed(format))
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462 | {
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463 | if(def.left == left && def.top == top && def.front == front &&
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464 | def.right == right && def.bottom == bottom && def.back == back)
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465 | {
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466 | // Entire buffer is being queried
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467 | return *this;
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468 | }
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469 | OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS, "Cannot return subvolume of compressed PixelBuffer", "PixelBox::getSubVolume");
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---|
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 | }
|
---|