il__dds_8h-source.html 21 KB

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  16. <h1>/home/dwoods/DevIL/src-IL/include/il_dds.h</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">//-----------------------------------------------------------------------------</span>
  17. <a name="l00002"></a>00002 <span class="comment">//</span>
  18. <a name="l00003"></a>00003 <span class="comment">// ImageLib Sources</span>
  19. <a name="l00004"></a>00004 <span class="comment">// Copyright (C) 2000-2008 by Denton Woods</span>
  20. <a name="l00005"></a>00005 <span class="comment">// Last modified: 12/27/2008</span>
  21. <a name="l00006"></a>00006 <span class="comment">//</span>
  22. <a name="l00007"></a>00007 <span class="comment">// Filename: src-IL/include/il_dds.h</span>
  23. <a name="l00008"></a>00008 <span class="comment">//</span>
  24. <a name="l00009"></a>00009 <span class="comment">// Description: Reads from a DirectDraw Surface (.dds) file.</span>
  25. <a name="l00010"></a>00010 <span class="comment">//</span>
  26. <a name="l00011"></a>00011 <span class="comment">//-----------------------------------------------------------------------------</span>
  27. <a name="l00012"></a>00012
  28. <a name="l00013"></a>00013
  29. <a name="l00014"></a>00014 <span class="preprocessor">#ifndef DDS_H</span>
  30. <a name="l00015"></a>00015 <span class="preprocessor"></span><span class="preprocessor">#define DDS_H</span>
  31. <a name="l00016"></a>00016 <span class="preprocessor"></span>
  32. <a name="l00017"></a>00017 <span class="preprocessor">#include "il_internal.h"</span>
  33. <a name="l00018"></a>00018
  34. <a name="l00019"></a>00019
  35. <a name="l00020"></a>00020 <span class="preprocessor">#ifdef _WIN32</span>
  36. <a name="l00021"></a>00021 <span class="preprocessor"></span><span class="preprocessor"> #pragma pack(push, dds_struct, 1)</span>
  37. <a name="l00022"></a>00022 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
  38. <a name="l00023"></a>00023 <span class="preprocessor"></span><span class="keyword">typedef</span> <span class="keyword">struct </span>DDSHEAD
  39. <a name="l00024"></a>00024 {
  40. <a name="l00025"></a>00025 ILbyte Signature[4];
  41. <a name="l00026"></a>00026
  42. <a name="l00027"></a>00027 ILuint Size1; <span class="comment">// size of the structure (minus MagicNum)</span>
  43. <a name="l00028"></a>00028 ILuint Flags1; <span class="comment">// determines what fields are valid</span>
  44. <a name="l00029"></a>00029 ILuint Height; <span class="comment">// height of surface to be created</span>
  45. <a name="l00030"></a>00030 ILuint Width; <span class="comment">// width of input surface</span>
  46. <a name="l00031"></a>00031 ILuint LinearSize; <span class="comment">// Formless late-allocated optimized surface size</span>
  47. <a name="l00032"></a>00032 ILuint Depth; <span class="comment">// Depth if a volume texture</span>
  48. <a name="l00033"></a>00033 ILuint MipMapCount; <span class="comment">// number of mip-map levels requested</span>
  49. <a name="l00034"></a>00034 ILuint AlphaBitDepth; <span class="comment">// depth of alpha buffer requested</span>
  50. <a name="l00035"></a>00035
  51. <a name="l00036"></a>00036 ILuint NotUsed[10];
  52. <a name="l00037"></a>00037
  53. <a name="l00038"></a>00038 ILuint Size2; <span class="comment">// size of structure</span>
  54. <a name="l00039"></a>00039 ILuint Flags2; <span class="comment">// pixel format flags</span>
  55. <a name="l00040"></a>00040 ILuint FourCC; <span class="comment">// (FOURCC code)</span>
  56. <a name="l00041"></a>00041 ILuint RGBBitCount; <span class="comment">// how many bits per pixel</span>
  57. <a name="l00042"></a>00042 ILuint RBitMask; <span class="comment">// mask for red bit</span>
  58. <a name="l00043"></a>00043 ILuint GBitMask; <span class="comment">// mask for green bits</span>
  59. <a name="l00044"></a>00044 ILuint BBitMask; <span class="comment">// mask for blue bits</span>
  60. <a name="l00045"></a>00045 ILuint RGBAlphaBitMask; <span class="comment">// mask for alpha channel</span>
  61. <a name="l00046"></a>00046
  62. <a name="l00047"></a>00047 ILuint ddsCaps1, ddsCaps2, ddsCaps3, ddsCaps4; <span class="comment">// direct draw surface capabilities</span>
  63. <a name="l00048"></a>00048 ILuint TextureStage;
  64. <a name="l00049"></a>00049 } IL_PACKSTRUCT DDSHEAD;
  65. <a name="l00050"></a>00050 <span class="preprocessor">#ifdef _WIN32</span>
  66. <a name="l00051"></a>00051 <span class="preprocessor"></span><span class="preprocessor"> #pragma pack(pop, dds_struct)</span>
  67. <a name="l00052"></a>00052 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
  68. <a name="l00053"></a>00053 <span class="preprocessor"></span>
  69. <a name="l00054"></a>00054
  70. <a name="l00055"></a>00055
  71. <a name="l00056"></a>00056 <span class="comment">// use cast to struct instead of RGBA_MAKE as struct is</span>
  72. <a name="l00057"></a>00057 <span class="comment">// much</span>
  73. <a name="l00058"></a>00058 <span class="keyword">typedef</span> <span class="keyword">struct </span>Color8888
  74. <a name="l00059"></a>00059 {
  75. <a name="l00060"></a>00060 ILubyte r; <span class="comment">// change the order of names to change the </span>
  76. <a name="l00061"></a>00061 ILubyte g; <span class="comment">// order of the output ARGB or BGRA, etc...</span>
  77. <a name="l00062"></a>00062 ILubyte b; <span class="comment">// Last one is MSB, 1st is LSB.</span>
  78. <a name="l00063"></a>00063 ILubyte a;
  79. <a name="l00064"></a>00064 } Color8888;
  80. <a name="l00065"></a>00065
  81. <a name="l00066"></a>00066
  82. <a name="l00067"></a>00067 <span class="keyword">typedef</span> <span class="keyword">struct </span>Color888
  83. <a name="l00068"></a>00068 {
  84. <a name="l00069"></a>00069 ILubyte r; <span class="comment">// change the order of names to change the </span>
  85. <a name="l00070"></a>00070 ILubyte g; <span class="comment">// order of the output ARGB or BGRA, etc...</span>
  86. <a name="l00071"></a>00071 ILubyte b; <span class="comment">// Last one is MSB, 1st is LSB.</span>
  87. <a name="l00072"></a>00072 } Color888;
  88. <a name="l00073"></a>00073
  89. <a name="l00074"></a>00074
  90. <a name="l00075"></a>00075 <span class="keyword">typedef</span> <span class="keyword">struct </span>Color565
  91. <a name="l00076"></a>00076 {
  92. <a name="l00077"></a>00077 <span class="keywordtype">unsigned</span> nBlue : 5; <span class="comment">// order of names changes</span>
  93. <a name="l00078"></a>00078 <span class="keywordtype">unsigned</span> nGreen : 6; <span class="comment">// byte order of output to 32 bit</span>
  94. <a name="l00079"></a>00079 <span class="keywordtype">unsigned</span> nRed : 5;
  95. <a name="l00080"></a>00080 } Color565;
  96. <a name="l00081"></a>00081
  97. <a name="l00082"></a>00082
  98. <a name="l00083"></a>00083 <span class="keyword">typedef</span> <span class="keyword">struct </span>DXTColBlock
  99. <a name="l00084"></a>00084 {
  100. <a name="l00085"></a>00085 ILshort col0;
  101. <a name="l00086"></a>00086 ILshort col1;
  102. <a name="l00087"></a>00087
  103. <a name="l00088"></a>00088 <span class="comment">// no bit fields - use bytes</span>
  104. <a name="l00089"></a>00089 ILbyte row[4];
  105. <a name="l00090"></a>00090 } DXTColBlock;
  106. <a name="l00091"></a>00091
  107. <a name="l00092"></a>00092 <span class="keyword">typedef</span> <span class="keyword">struct </span>DXTAlphaBlockExplicit
  108. <a name="l00093"></a>00093 {
  109. <a name="l00094"></a>00094 ILshort row[4];
  110. <a name="l00095"></a>00095 } DXTAlphaBlockExplicit;
  111. <a name="l00096"></a>00096
  112. <a name="l00097"></a>00097 <span class="keyword">typedef</span> <span class="keyword">struct </span>DXTAlphaBlock3BitLinear
  113. <a name="l00098"></a>00098 {
  114. <a name="l00099"></a>00099 ILbyte alpha0;
  115. <a name="l00100"></a>00100 ILbyte alpha1;
  116. <a name="l00101"></a>00101
  117. <a name="l00102"></a>00102 ILbyte stuff[6];
  118. <a name="l00103"></a>00103 } DXTAlphaBlock3BitLinear;
  119. <a name="l00104"></a>00104
  120. <a name="l00105"></a>00105
  121. <a name="l00106"></a>00106 <span class="comment">// Defines</span>
  122. <a name="l00107"></a>00107
  123. <a name="l00108"></a>00108 <span class="comment">//Those 4 were added on 20040516 to make</span>
  124. <a name="l00109"></a>00109 <span class="comment">//the written dds files more standard compliant</span>
  125. <a name="l00110"></a>00110 <span class="preprocessor">#define DDS_CAPS 0x00000001L</span>
  126. <a name="l00111"></a>00111 <span class="preprocessor"></span><span class="preprocessor">#define DDS_HEIGHT 0x00000002L</span>
  127. <a name="l00112"></a>00112 <span class="preprocessor"></span><span class="preprocessor">#define DDS_WIDTH 0x00000004L</span>
  128. <a name="l00113"></a>00113 <span class="preprocessor"></span>
  129. <a name="l00114"></a>00114 <span class="preprocessor">#define DDS_RGB 0x00000040L</span>
  130. <a name="l00115"></a>00115 <span class="preprocessor"></span><span class="preprocessor">#define DDS_PIXELFORMAT 0x00001000L</span>
  131. <a name="l00116"></a>00116 <span class="preprocessor"></span>
  132. <a name="l00117"></a>00117 <span class="preprocessor">#define DDS_LUMINANCE 0x00020000L</span>
  133. <a name="l00118"></a>00118 <span class="preprocessor"></span>
  134. <a name="l00119"></a>00119 <span class="preprocessor">#define DDS_ALPHAPIXELS 0x00000001L</span>
  135. <a name="l00120"></a>00120 <span class="preprocessor"></span><span class="preprocessor">#define DDS_ALPHA 0x00000002L</span>
  136. <a name="l00121"></a>00121 <span class="preprocessor"></span><span class="preprocessor">#define DDS_FOURCC 0x00000004L</span>
  137. <a name="l00122"></a>00122 <span class="preprocessor"></span><span class="preprocessor">#define DDS_PITCH 0x00000008L</span>
  138. <a name="l00123"></a>00123 <span class="preprocessor"></span><span class="preprocessor">#define DDS_COMPLEX 0x00000008L</span>
  139. <a name="l00124"></a>00124 <span class="preprocessor"></span><span class="preprocessor">#define DDS_TEXTURE 0x00001000L</span>
  140. <a name="l00125"></a>00125 <span class="preprocessor"></span><span class="preprocessor">#define DDS_MIPMAPCOUNT 0x00020000L</span>
  141. <a name="l00126"></a>00126 <span class="preprocessor"></span><span class="preprocessor">#define DDS_LINEARSIZE 0x00080000L</span>
  142. <a name="l00127"></a>00127 <span class="preprocessor"></span><span class="preprocessor">#define DDS_VOLUME 0x00200000L</span>
  143. <a name="l00128"></a>00128 <span class="preprocessor"></span><span class="preprocessor">#define DDS_MIPMAP 0x00400000L</span>
  144. <a name="l00129"></a>00129 <span class="preprocessor"></span><span class="preprocessor">#define DDS_DEPTH 0x00800000L</span>
  145. <a name="l00130"></a>00130 <span class="preprocessor"></span>
  146. <a name="l00131"></a>00131 <span class="preprocessor">#define DDS_CUBEMAP 0x00000200L</span>
  147. <a name="l00132"></a>00132 <span class="preprocessor"></span><span class="preprocessor">#define DDS_CUBEMAP_POSITIVEX 0x00000400L</span>
  148. <a name="l00133"></a>00133 <span class="preprocessor"></span><span class="preprocessor">#define DDS_CUBEMAP_NEGATIVEX 0x00000800L</span>
  149. <a name="l00134"></a>00134 <span class="preprocessor"></span><span class="preprocessor">#define DDS_CUBEMAP_POSITIVEY 0x00001000L</span>
  150. <a name="l00135"></a>00135 <span class="preprocessor"></span><span class="preprocessor">#define DDS_CUBEMAP_NEGATIVEY 0x00002000L</span>
  151. <a name="l00136"></a>00136 <span class="preprocessor"></span><span class="preprocessor">#define DDS_CUBEMAP_POSITIVEZ 0x00004000L</span>
  152. <a name="l00137"></a>00137 <span class="preprocessor"></span><span class="preprocessor">#define DDS_CUBEMAP_NEGATIVEZ 0x00008000L</span>
  153. <a name="l00138"></a>00138 <span class="preprocessor"></span>
  154. <a name="l00139"></a>00139
  155. <a name="l00140"></a>00140 <span class="preprocessor">#define IL_MAKEFOURCC(ch0, ch1, ch2, ch3) \</span>
  156. <a name="l00141"></a>00141 <span class="preprocessor"> ((ILint)(ILbyte)(ch0) | ((ILint)(ILbyte)(ch1) &lt;&lt; 8) | \</span>
  157. <a name="l00142"></a>00142 <span class="preprocessor"> ((ILint)(ILbyte)(ch2) &lt;&lt; 16) | ((ILint)(ILbyte)(ch3) &lt;&lt; 24 ))</span>
  158. <a name="l00143"></a>00143 <span class="preprocessor"></span>
  159. <a name="l00144"></a>00144 <span class="keyword">enum</span> PixFormat
  160. <a name="l00145"></a>00145 {
  161. <a name="l00146"></a>00146 PF_ARGB,
  162. <a name="l00147"></a>00147 PF_RGB,
  163. <a name="l00148"></a>00148 PF_DXT1,
  164. <a name="l00149"></a>00149 PF_DXT2,
  165. <a name="l00150"></a>00150 PF_DXT3,
  166. <a name="l00151"></a>00151 PF_DXT4,
  167. <a name="l00152"></a>00152 PF_DXT5,
  168. <a name="l00153"></a>00153 PF_3DC,
  169. <a name="l00154"></a>00154 PF_ATI1N,
  170. <a name="l00155"></a>00155 PF_LUMINANCE,
  171. <a name="l00156"></a>00156 PF_LUMINANCE_ALPHA,
  172. <a name="l00157"></a>00157 PF_RXGB, <span class="comment">//Doom3 normal maps</span>
  173. <a name="l00158"></a>00158 PF_A16B16G16R16,
  174. <a name="l00159"></a>00159 PF_R16F,
  175. <a name="l00160"></a>00160 PF_G16R16F,
  176. <a name="l00161"></a>00161 PF_A16B16G16R16F,
  177. <a name="l00162"></a>00162 PF_R32F,
  178. <a name="l00163"></a>00163 PF_G32R32F,
  179. <a name="l00164"></a>00164 PF_A32B32G32R32F,
  180. <a name="l00165"></a>00165 PF_UNKNOWN = 0xFF
  181. <a name="l00166"></a>00166 };
  182. <a name="l00167"></a>00167
  183. <a name="l00168"></a>00168 <span class="preprocessor">#define CUBEMAP_SIDES 6</span>
  184. <a name="l00169"></a>00169 <span class="preprocessor"></span>
  185. <a name="l00170"></a>00170 <span class="comment">// Internal functions</span>
  186. <a name="l00171"></a>00171 ILboolean iLoadDdsInternal(<span class="keywordtype">void</span>);
  187. <a name="l00172"></a>00172 ILboolean iIsValidDds(<span class="keywordtype">void</span>);
  188. <a name="l00173"></a>00173 ILboolean iCheckDds(DDSHEAD *Head);
  189. <a name="l00174"></a>00174 <span class="keywordtype">void</span> AdjustVolumeTexture(DDSHEAD *Head, ILuint CompFormat);
  190. <a name="l00175"></a>00175 ILboolean ReadData();
  191. <a name="l00176"></a>00176 ILboolean AllocImage(ILuint CompFormat);
  192. <a name="l00177"></a>00177 ILboolean DdsDecompress(ILuint CompFormat);
  193. <a name="l00178"></a>00178 ILboolean ReadMipmaps(ILuint CompFormat);
  194. <a name="l00179"></a>00179 ILuint DecodePixelFormat();
  195. <a name="l00180"></a>00180 <span class="keywordtype">void</span> DxtcReadColor(ILushort Data, Color8888* Out);
  196. <a name="l00181"></a>00181 <span class="keywordtype">void</span> DxtcReadColors(<span class="keyword">const</span> ILubyte* Data, Color8888* Out);
  197. <a name="l00182"></a>00182 ILboolean DecompressARGB(ILuint CompFormat);
  198. <a name="l00183"></a>00183 ILboolean DecompressARGB16(ILuint CompFormat);
  199. <a name="l00184"></a>00184 ILboolean DecompressDXT1(<a class="code" href="structILimage.html" title="The Fundamental Image structure.">ILimage</a> *lImage, ILubyte *lCompData);
  200. <a name="l00185"></a>00185 ILboolean DecompressDXT2(<a class="code" href="structILimage.html" title="The Fundamental Image structure.">ILimage</a> *lImage, ILubyte *lCompData);
  201. <a name="l00186"></a>00186 ILboolean DecompressDXT3(<a class="code" href="structILimage.html" title="The Fundamental Image structure.">ILimage</a> *lImage, ILubyte *lCompData);
  202. <a name="l00187"></a>00187 ILboolean DecompressDXT4(<a class="code" href="structILimage.html" title="The Fundamental Image structure.">ILimage</a> *lImage, ILubyte *lCompData);
  203. <a name="l00188"></a>00188 ILboolean DecompressDXT5(<a class="code" href="structILimage.html" title="The Fundamental Image structure.">ILimage</a> *lImage, ILubyte *lCompData);
  204. <a name="l00189"></a>00189 ILboolean Decompress3Dc();
  205. <a name="l00190"></a>00190 ILboolean DecompressAti1n();
  206. <a name="l00191"></a>00191 ILboolean DecompressRXGB();
  207. <a name="l00192"></a>00192 ILboolean iConvFloat16ToFloat32(ILuint* dest, ILushort* src, ILuint size);
  208. <a name="l00193"></a>00193 ILboolean DecompressFloat(ILuint lCompFormat);
  209. <a name="l00194"></a>00194 <span class="keywordtype">void</span> CorrectPreMult();
  210. <a name="l00195"></a>00195 <span class="keywordtype">void</span> GetBitsFromMask(ILuint Mask, ILuint *ShiftLeft, ILuint *ShiftRight);
  211. <a name="l00196"></a>00196 ILboolean iSaveDdsInternal(<span class="keywordtype">void</span>);
  212. <a name="l00197"></a>00197 ILboolean WriteHeader(<a class="code" href="structILimage.html" title="The Fundamental Image structure.">ILimage</a> *Image, ILenum DXTCFormat, ILuint CubeFlags);
  213. <a name="l00198"></a>00198 ILushort *CompressTo565(<a class="code" href="structILimage.html" title="The Fundamental Image structure.">ILimage</a> *Image);
  214. <a name="l00199"></a>00199 ILubyte *CompressTo88(<a class="code" href="structILimage.html" title="The Fundamental Image structure.">ILimage</a> *Image);
  215. <a name="l00200"></a>00200 ILuint Compress(<a class="code" href="structILimage.html" title="The Fundamental Image structure.">ILimage</a> *Image, ILenum DXTCFormat);
  216. <a name="l00201"></a>00201 ILboolean GetBlock(ILushort *Block, ILushort *Data, <a class="code" href="structILimage.html" title="The Fundamental Image structure.">ILimage</a> *Image, ILuint XPos, ILuint YPos);
  217. <a name="l00202"></a>00202 ILboolean GetAlphaBlock(ILubyte *Block, ILubyte *Data, <a class="code" href="structILimage.html" title="The Fundamental Image structure.">ILimage</a> *Image, ILuint XPos, ILuint YPos);
  218. <a name="l00203"></a>00203 ILboolean Get3DcBlock(ILubyte *Block, ILubyte *Data, <a class="code" href="structILimage.html" title="The Fundamental Image structure.">ILimage</a> *Image, ILuint XPos, ILuint YPos, <span class="keywordtype">int</span> channel);
  219. <a name="l00204"></a>00204 <span class="keywordtype">void</span> ShortToColor565(ILushort Pixel, Color565 *Colour);
  220. <a name="l00205"></a>00205 <span class="keywordtype">void</span> ShortToColor888(ILushort Pixel, Color888 *Colour);
  221. <a name="l00206"></a>00206 ILushort Color565ToShort(Color565 *Colour);
  222. <a name="l00207"></a>00207 ILushort Color888ToShort(Color888 *Colour);
  223. <a name="l00208"></a>00208 ILuint GenBitMask(ILushort ex0, ILushort ex1, ILuint NumCols, ILushort *In, ILubyte *Alpha, Color888 *OutCol);
  224. <a name="l00209"></a>00209 <span class="keywordtype">void</span> GenAlphaBitMask(ILubyte a0, ILubyte a1, ILubyte *In, ILubyte *Mask, ILubyte *Out);
  225. <a name="l00210"></a>00210 ILuint RMSAlpha(ILubyte *Orig, ILubyte *Test);
  226. <a name="l00211"></a>00211 ILuint Distance(Color888 *c1, Color888 *c2);
  227. <a name="l00212"></a>00212 <span class="keywordtype">void</span> ChooseEndpoints(ILushort *Block, ILushort *ex0, ILushort *ex1);
  228. <a name="l00213"></a>00213 <span class="keywordtype">void</span> ChooseAlphaEndpoints(ILubyte *Block, ILubyte *a0, ILubyte *a1);
  229. <a name="l00214"></a>00214 <span class="keywordtype">void</span> CorrectEndDXT1(ILushort *ex0, ILushort *ex1, ILboolean HasAlpha);
  230. <a name="l00215"></a>00215 <span class="keywordtype">void</span> PreMult(ILushort *Data, ILubyte *Alpha);
  231. <a name="l00216"></a>00216
  232. <a name="l00217"></a>00217
  233. <a name="l00218"></a>00218 <span class="keyword">extern</span> ILuint CubemapDirections[CUBEMAP_SIDES];
  234. <a name="l00219"></a>00219
  235. <a name="l00220"></a>00220
  236. <a name="l00221"></a>00221 <span class="preprocessor">#endif//DDS_H</span>
  237. </pre></div></div>
  238. <hr size="1"><address style="text-align: right;"><small>Generated on Sun Mar 8 20:01:41 2009 for DevIL by&nbsp;
  239. <a href="http://www.doxygen.org/index.html">
  240. <img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.6 </small></address>
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