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PVRTFixedPoint_8h-source.html

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  1. <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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  12.       <p align="center"><font color="#808080" face="Arial" size="2">PowerVR Software Development Kit</a></font></p>
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  14.     <td width="34%">
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  15.       <p align="right"><a href="http://www.powervr.com"><img border="0" src="PVRlogo.jpg" width="200" height="27"></a></p>
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  22. <div class="qindex"><a class="qindex" href="index.html">Main&nbsp;Page</a> | <a class="qindex" href="hierarchy.html">Class&nbsp;Hierarchy</a> | <a class="qindex" href="annotated.html">Class&nbsp;List</a> | <a class="qindex" href="files.html">File&nbsp;List</a> | <a class="qindex" href="functions.html">Class&nbsp;Members</a> | <a class="qindex" href="globals.html">File&nbsp;Members</a></div>
    23. 

  23. <h1>PVRTFixedPoint.h</h1><a href="PVRTFixedPoint_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001 <span class="comment">/******************************************************************************</span>
    24. 

  24. 00002 <span class="comment"></span>
    25. 

  25. 00003 <span class="comment"> @File         PVRTFixedPoint.h</span>
    26. 

  26. 00004 <span class="comment"></span>
    27. 

  27. 00005 <span class="comment"> @Title        PVRTFixedPoint</span>
    28. 

  28. 00006 <span class="comment"></span>
    29. 

  29. 00007 <span class="comment"> @Version      </span>
    30. 

  30. 00008 <span class="comment"></span>
    31. 

  31. 00009 <span class="comment"> @Copyright    Copyright (C)  Imagination Technologies Limited.</span>
    32. 

  32. 00010 <span class="comment"></span>
    33. 

  33. 00011 <span class="comment"> @Platform     Independant</span>
    34. 

  34. 00012 <span class="comment"></span>
    35. 

  35. 00013 <span class="comment"> @Description  Set of macros and functions to make fixed-point easier to program.</span>
    36. 

  36. 00014 <span class="comment"></span>
    37. 

  37. 00015 <span class="comment">******************************************************************************/</span>
    38. 

  38. 00016 <span class="preprocessor">#ifndef _PVRTFIXEDPOINT_H_</span>
    39. 

  39. 00017 <span class="preprocessor"></span><span class="preprocessor">#define _PVRTFIXEDPOINT_H_</span>
    40. 

  40. 00018 <span class="preprocessor"></span>
    41. 

  41. 00019 <span class="preprocessor">#include "<a class="code" href="PVRTGlobal_8h.html">PVRTGlobal.h</a>"</span>
    42. 

  42. 00020 
    43. 

  43. 00021 <span class="preprocessor">#if defined(BUILD_OGLES) || defined(BUILD_D3DM)</span>
    44. 

  44. 00022 <span class="preprocessor"></span><span class="preprocessor">    #include "PVRTFixedPointAPI.h"</span>
    45. 

  45. 00023 <span class="preprocessor">#else</span>
    46. 

  46. <a name="l00024"></a><a class="code" href="PVRTFixedPoint_8h.html#a0">00024</a> <span class="preprocessor"></span><span class="preprocessor">    #define VERTTYPE float</span>
    47. 

  47. 00025 <span class="preprocessor"></span><span class="preprocessor">    #ifdef PVRT_FIXED_POINT_ENABLE</span>
    48. 

  48. 00026 <span class="preprocessor"></span><span class="preprocessor">        #error Build option not supported: PVRT_FIXED_POINT_ENABLE</span>
    49. 

  49. 00027 <span class="preprocessor"></span><span class="preprocessor">    #endif</span>
    50. 

  50. 00028 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
    51. 

  51. 00029 <span class="preprocessor"></span>
    52. 

  52. 00030 <span class="comment">/* Fixed-point macros */</span>
    53. 

  53. <a name="l00031"></a><a class="code" href="PVRTFixedPoint_8h.html#a1">00031</a> <span class="preprocessor">#define PVRTF2X(f)      ( (int) ( (f)*(65536) ) )</span>
    54. 

  54. <a name="l00032"></a><a class="code" href="PVRTFixedPoint_8h.html#a2">00032</a> <span class="preprocessor"></span><span class="preprocessor">#define PVRTX2F(x)      ((float)(x)/65536.0f)</span>
    55. 

  55. <a name="l00033"></a><a class="code" href="PVRTFixedPoint_8h.html#a3">00033</a> <span class="preprocessor"></span><span class="preprocessor">#define PVRTXMUL(a,b)   ( (int)( ((PVRTint64)(a)*(b)) / 65536 ) )</span>
    56. 

  56. <a name="l00034"></a><a class="code" href="PVRTFixedPoint_8h.html#a4">00034</a> <span class="preprocessor"></span><span class="preprocessor">#define PVRTXDIV(a,b)   ( (int)( (((PVRTint64)(a))&lt;&lt;16)/(b) ) )</span>
    57. 

  57. <a name="l00035"></a><a class="code" href="PVRTFixedPoint_8h.html#a5">00035</a> <span class="preprocessor"></span><span class="preprocessor">#define PVRTABS(a)      ((a) &lt;= 0 ? -(a) : (a) )</span>
    58. 

  58. 00036 <span class="preprocessor"></span>
    59. 

  59. 00037 <span class="comment">/* Define trig table macros */</span>
    60. 

  60. 00038 <span class="preprocessor">#include "<a class="code" href="PVRTMathTable_8h.html">PVRTMathTable.h</a>"</span>
    61. 

  61. 00039 
    62. 

  62. 00040 <span class="comment">/* Useful values */</span>
    63. 

  63. <a name="l00041"></a><a class="code" href="PVRTFixedPoint_8h.html#a6">00041</a> <span class="preprocessor">#define PVRT_PI_OVER_TWOf   (3.1415926535f / 2.0f)</span>
    64. 

  64. <a name="l00042"></a><a class="code" href="PVRTFixedPoint_8h.html#a7">00042</a> <span class="preprocessor"></span><span class="preprocessor">#define PVRT_PIf            (3.1415926535f)</span>
    65. 

  65. <a name="l00043"></a><a class="code" href="PVRTFixedPoint_8h.html#a8">00043</a> <span class="preprocessor"></span><span class="preprocessor">#define PVRT_TWO_PIf        (3.1415926535f * 2.0f)</span>
    66. 

  66. <a name="l00044"></a><a class="code" href="PVRTFixedPoint_8h.html#a9">00044</a> <span class="preprocessor"></span><span class="preprocessor">#define PVRT_ONEf       (1.0f)</span>
    67. 

  67. 00045 <span class="preprocessor"></span>
    68. 

  68. <a name="l00046"></a><a class="code" href="PVRTFixedPoint_8h.html#a10">00046</a> <span class="preprocessor">#define PVRT_PI_OVER_TWOx   PVRTF2X(PVRT_PI_OVER_TWOf)</span>
    69. 

  69. <a name="l00047"></a><a class="code" href="PVRTFixedPoint_8h.html#a11">00047</a> <span class="preprocessor"></span><span class="preprocessor">#define PVRT_PIx            PVRTF2X(PVRT_PIf)</span>
    70. 

  70. <a name="l00048"></a><a class="code" href="PVRTFixedPoint_8h.html#a12">00048</a> <span class="preprocessor"></span><span class="preprocessor">#define PVRT_TWO_PIx        PVRTF2X(PVRT_TWO_PIf)</span>
    71. 

  71. <a name="l00049"></a><a class="code" href="PVRTFixedPoint_8h.html#a13">00049</a> <span class="preprocessor"></span><span class="preprocessor">#define PVRT_ONEx           PVRTF2X(PVRT_ONEf)</span>
    72. 

  72. 00050 <span class="preprocessor"></span>
    73. 

  73. 00051 <span class="comment">/* Fixed-point trig function lookups */</span>
    74. 

  74. <a name="l00052"></a><a class="code" href="PVRTFixedPoint_8h.html#a14">00052</a> <span class="preprocessor">#define PVRTXCOS(x)     (cos_val[(PVRTXMUL(((PVRTXDIV((x)&lt;0? -(x):(x), PVRT_TWO_PIx)) &amp; 0x0000FFFF), (NUM_ENTRIES-1)))])</span>
    75. 

  75. <a name="l00053"></a><a class="code" href="PVRTFixedPoint_8h.html#a15">00053</a> <span class="preprocessor"></span><span class="preprocessor">#define PVRTXSIN(x)     (sin_val[(PVRTXMUL(((PVRTXDIV((x)&lt;0 ? PVRT_PIx-(x):(x), PVRT_TWO_PIx)) &amp; 0x0000FFFF), (NUM_ENTRIES-1)))])</span>
    76. 

  76. <a name="l00054"></a><a class="code" href="PVRTFixedPoint_8h.html#a16">00054</a> <span class="preprocessor"></span><span class="preprocessor">#define PVRTXTAN(x)     ( (x)&lt;0 ? -tan_val[(PVRTXMUL(((PVRTXDIV(-(x), PVRT_TWO_PIx)) &amp; 0x0000FFFF), (NUM_ENTRIES-1)))] : tan_val[(PVRTXMUL(((PVRTXDIV(x, PVRT_TWO_PIx)) &amp; 0x0000FFFF), (NUM_ENTRIES-1)))] )</span>
    77. 

  77. <a name="l00055"></a><a class="code" href="PVRTFixedPoint_8h.html#a17">00055</a> <span class="preprocessor"></span><span class="preprocessor">#define PVRTXACOS(x)    (acos_val[PVRTXMUL(((((x) + PVRTF2X(1.0f))&gt;&gt;1) &amp; 0x0000FFFF), (NUM_ENTRIES-1))])</span>
    78. 

  78. 00056 <span class="preprocessor"></span>
    79. 

  79. 00057 <span class="comment">/* Floating-point trig functions lookups (needed by some tools chains that have problems with real math functions) */</span>
    80. 

  80. 00058 <span class="preprocessor">#ifdef USE_TRIGONOMETRIC_LOOKUP_TABLES</span>
    81. 

  81. 00059 <span class="preprocessor"></span>
    82. 

  82. 00060     <span class="comment">/* If trig tables are forced ON in non-fixed-point builds then convert fixed-point trig tables results to float */</span>
    83. 

  83. 00061 <span class="preprocessor">    #define PVRTFCOS(x)             PVRTX2F(PVRTXCOS(PVRTF2X(x)))</span>
    84. 

  84. 00062 <span class="preprocessor"></span><span class="preprocessor">    #define PVRTFSIN(x)             PVRTX2F(PVRTXSIN(PVRTF2X(x)))</span>
    85. 

  85. 00063 <span class="preprocessor"></span><span class="preprocessor">    #define PVRTFTAN(x)             PVRTX2F(PVRTXTAN(PVRTF2X(x)))</span>
    86. 

  86. 00064 <span class="preprocessor"></span><span class="preprocessor">    #define PVRTFACOS(x)            PVRTX2F(PVRTXACOS(PVRTF2X(x)))</span>
    87. 

  87. 00065 <span class="preprocessor"></span>
    88. 

  88. 00066 <span class="preprocessor">#else</span>
    89. 

  89. 00067 <span class="preprocessor"></span>
    90. 

  90. 00068     <span class="comment">/* Trig abstraction macros default to normal math trig functions for full float mode */</span>
    91. 

  91. <a name="l00069"></a><a class="code" href="PVRTFixedPoint_8h.html#a18">00069</a> <span class="preprocessor">    #define PVRTFCOS(x)             ((float)cos(x))</span>
    92. 

  92. <a name="l00070"></a><a class="code" href="PVRTFixedPoint_8h.html#a19">00070</a> <span class="preprocessor"></span><span class="preprocessor">    #define PVRTFSIN(x)             ((float)sin(x))</span>
    93. 

  93. <a name="l00071"></a><a class="code" href="PVRTFixedPoint_8h.html#a20">00071</a> <span class="preprocessor"></span><span class="preprocessor">    #define PVRTFTAN(x)             ((float)tan(x))</span>
    94. 

  94. <a name="l00072"></a><a class="code" href="PVRTFixedPoint_8h.html#a21">00072</a> <span class="preprocessor"></span><span class="preprocessor">    #define PVRTFACOS(x)            ((float)acos(x))</span>
    95. 

  95. 00073 <span class="preprocessor"></span>
    96. 

  96. 00074 <span class="preprocessor">#endif</span>
    97. 

  97. 00075 <span class="preprocessor"></span>
    98. 

  98. 00076 
    99. 

  99. 00077 <span class="comment">/* Fixed/float macro abstraction */</span>
    100. 

  100. 00078 <span class="preprocessor">#ifdef PVRT_FIXED_POINT_ENABLE</span>
    101. 

  101. 00079 <span class="preprocessor"></span>
    102. 

  102. 00080     <span class="comment">/* Fixed-point operations, including trig tables */</span>
    103. 

  103. 00081 <span class="preprocessor">    #define VERTTYPEMUL(a,b)            PVRTXMUL(a,b)</span>
    104. 

  104. 00082 <span class="preprocessor"></span><span class="preprocessor">    #define VERTTYPEDIV(a,b)            PVRTXDIV(a,b)</span>
    105. 

  105. 00083 <span class="preprocessor"></span><span class="preprocessor">    #define VERTTYPEABS(a)              PVRTABS(a)</span>
    106. 

  106. 00084 <span class="preprocessor"></span>
    107. 

  107. 00085 <span class="preprocessor">    #define f2vt(f)                     PVRTF2X(f)</span>
    108. 

  108. 00086 <span class="preprocessor"></span><span class="preprocessor">    #define vt2f(x)                     PVRTX2F(x)</span>
    109. 

  109. 00087 <span class="preprocessor"></span>
    110. 

  110. 00088 <span class="preprocessor">    #define PVRT_PI_OVER_TWO            PVRT_PI_OVER_TWOx</span>
    111. 

  111. 00089 <span class="preprocessor"></span><span class="preprocessor">    #define PVRT_PI                     PVRT_PIx</span>
    112. 

  112. 00090 <span class="preprocessor"></span><span class="preprocessor">    #define PVRT_TWO_PI                 PVRT_TWO_PIx</span>
    113. 

  113. 00091 <span class="preprocessor"></span><span class="preprocessor">    #define PVRT_ONE                    PVRT_ONEx</span>
    114. 

  114. 00092 <span class="preprocessor"></span>
    115. 

  115. 00093 <span class="preprocessor">    #define PVRTCOS(x)                  PVRTXCOS(x)</span>
    116. 

  116. 00094 <span class="preprocessor"></span><span class="preprocessor">    #define PVRTSIN(x)                  PVRTXSIN(x)</span>
    117. 

  117. 00095 <span class="preprocessor"></span><span class="preprocessor">    #define PVRTTAN(x)                  PVRTXTAN(x)</span>
    118. 

  118. 00096 <span class="preprocessor"></span><span class="preprocessor">    #define PVRTACOS(x)                 PVRTXACOS(x)</span>
    119. 

  119. 00097 <span class="preprocessor"></span>
    120. 

  120. 00098 <span class="preprocessor">#else</span>
    121. 

  121. 00099 <span class="preprocessor"></span>
    122. 

  122. 00100     <span class="comment">/* Floating-point operations */</span>
    123. 

  123. <a name="l00101"></a><a class="code" href="PVRTFixedPoint_8h.html#a22">00101</a> <span class="preprocessor">    #define VERTTYPEMUL(a,b)            ( (VERTTYPE)((a)*(b)) )</span>
    124. 

  124. <a name="l00102"></a><a class="code" href="PVRTFixedPoint_8h.html#a23">00102</a> <span class="preprocessor"></span><span class="preprocessor">    #define VERTTYPEDIV(a,b)            ( (VERTTYPE)((a)/(b)) )</span>
    125. 

  125. <a name="l00103"></a><a class="code" href="PVRTFixedPoint_8h.html#a24">00103</a> <span class="preprocessor"></span><span class="preprocessor">    #define VERTTYPEABS(a)              ( (VERTTYPE)(fabs(a)) )</span>
    126. 

  126. 00104 <span class="preprocessor"></span>
    127. 

  127. <a name="l00105"></a><a class="code" href="PVRTFixedPoint_8h.html#a25">00105</a> <span class="preprocessor">    #define f2vt(x)                     (x)</span>
    128. 

  128. <a name="l00106"></a><a class="code" href="PVRTFixedPoint_8h.html#a26">00106</a> <span class="preprocessor"></span><span class="preprocessor">    #define vt2f(x)                     (x)</span>
    129. 

  129. 00107 <span class="preprocessor"></span>
    130. 

  130. <a name="l00108"></a><a class="code" href="PVRTFixedPoint_8h.html#a27">00108</a> <span class="preprocessor">    #define PVRT_PI_OVER_TWO            PVRT_PI_OVER_TWOf</span>
    131. 

  131. <a name="l00109"></a><a class="code" href="PVRTFixedPoint_8h.html#a28">00109</a> <span class="preprocessor"></span><span class="preprocessor">    #define PVRT_PI                     PVRT_PIf</span>
    132. 

  132. <a name="l00110"></a><a class="code" href="PVRTFixedPoint_8h.html#a29">00110</a> <span class="preprocessor"></span><span class="preprocessor">    #define PVRT_TWO_PI                 PVRT_TWO_PIf</span>
    133. 

  133. <a name="l00111"></a><a class="code" href="PVRTFixedPoint_8h.html#a30">00111</a> <span class="preprocessor"></span><span class="preprocessor">    #define PVRT_ONE                    PVRT_ONEf</span>
    134. 

  134. 00112 <span class="preprocessor"></span>
    135. 

  135. 00113     <span class="comment">/* If trig tables are forced ON in non-fixed-point builds then convert fixed-point trig tables results to float */</span>
    136. 

  136. <a name="l00114"></a><a class="code" href="PVRTFixedPoint_8h.html#a31">00114</a> <span class="preprocessor">    #define PVRTCOS(x)                  PVRTFCOS(x)</span>
    137. 

  137. <a name="l00115"></a><a class="code" href="PVRTFixedPoint_8h.html#a32">00115</a> <span class="preprocessor"></span><span class="preprocessor">    #define PVRTSIN(x)                  PVRTFSIN(x)</span>
    138. 

  138. <a name="l00116"></a><a class="code" href="PVRTFixedPoint_8h.html#a33">00116</a> <span class="preprocessor"></span><span class="preprocessor">    #define PVRTTAN(x)                  PVRTFTAN(x)</span>
    139. 

  139. <a name="l00117"></a><a class="code" href="PVRTFixedPoint_8h.html#a34">00117</a> <span class="preprocessor"></span><span class="preprocessor">    #define PVRTACOS(x)                 PVRTFACOS(x)</span>
    140. 

  140. 00118 <span class="preprocessor"></span>
    141. 

  141. 00119 <span class="preprocessor">#endif</span>
    142. 

  142. 00120 <span class="preprocessor"></span>
    143. 

  143. 00121 
    144. 

  144. 00122 <span class="comment">// Structure Definitions</span>
    145. 

  145. 00123 
    146. 

  146. 00124 <span class="comment">/*!***************************************************************************</span>
    147. 

  147. 00125 <span class="comment"> @Struct HeaderStruct_Mesh</span>
    148. 

  148. 00126 <span class="comment"> @Brief  Defines the format of a header-object as exported by the MAX plugin.</span>
    149. 

  149. 00127 <span class="comment">*****************************************************************************/</span>
    150. 

  150. <a name="l00128"></a><a class="code" href="structHeaderStruct__Mesh.html">00128</a> <span class="keyword">typedef</span> <span class="keyword">struct </span>{
    151. 

  151. <a name="l00129"></a><a class="code" href="structHeaderStruct__Mesh.html#o0">00129</a>     <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>      nNumVertex;
    152. 

  152. <a name="l00130"></a><a class="code" href="structHeaderStruct__Mesh.html#o1">00130</a>     <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>      nNumFaces;
    153. 

  153. <a name="l00131"></a><a class="code" href="structHeaderStruct__Mesh.html#o2">00131</a>     <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>      nNumStrips;
    154. 

  154. <a name="l00132"></a><a class="code" href="structHeaderStruct__Mesh.html#o3">00132</a>     <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>      nFlags;
    155. 

  155. <a name="l00133"></a><a class="code" href="structHeaderStruct__Mesh.html#o4">00133</a>     <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>      nMaterial;
    156. 

  156. <a name="l00134"></a><a class="code" href="structHeaderStruct__Mesh.html#o5">00134</a>     <span class="keywordtype">float</span>             fCenter[3];
    157. 

  157. <a name="l00135"></a><a class="code" href="structHeaderStruct__Mesh.html#o6">00135</a>     <span class="keywordtype">float</span>             *pVertex;
    158. 

  158. <a name="l00136"></a><a class="code" href="structHeaderStruct__Mesh.html#o7">00136</a>     <span class="keywordtype">float</span>             *pUV;
    159. 

  159. <a name="l00137"></a><a class="code" href="structHeaderStruct__Mesh.html#o8">00137</a>     <span class="keywordtype">float</span>             *pNormals;
    160. 

  160. <a name="l00138"></a><a class="code" href="structHeaderStruct__Mesh.html#o9">00138</a>     <span class="keywordtype">float</span>             *pPackedVertex;
    161. 

  161. <a name="l00139"></a><a class="code" href="structHeaderStruct__Mesh.html#o10">00139</a>     <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>      *pVertexColor;
    162. 

  162. <a name="l00140"></a><a class="code" href="structHeaderStruct__Mesh.html#o11">00140</a>     <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>      *pVertexMaterial;
    163. 

  163. <a name="l00141"></a><a class="code" href="structHeaderStruct__Mesh.html#o12">00141</a>     <span class="keywordtype">unsigned</span> <span class="keywordtype">short</span>    *pFaces;
    164. 

  164. <a name="l00142"></a><a class="code" href="structHeaderStruct__Mesh.html#o13">00142</a>     <span class="keywordtype">unsigned</span> <span class="keywordtype">short</span>    *pStrips;
    165. 

  165. <a name="l00143"></a><a class="code" href="structHeaderStruct__Mesh.html#o14">00143</a>     <span class="keywordtype">unsigned</span> <span class="keywordtype">short</span>    *pStripLength;
    166. 

  166. 00144     <span class="keyword">struct</span>
    167. 

  167. 00145 <span class="keyword">    </span>{
    168. 

  168. <a name="l00146"></a><a class="code" href="structHeaderStruct__Mesh.html#o15">00146</a>         <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>  nType;
    169. 

  169. <a name="l00147"></a><a class="code" href="structHeaderStruct__Mesh.html#o16">00147</a>         <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>  nNumPatches;
    170. 

  170. <a name="l00148"></a><a class="code" href="structHeaderStruct__Mesh.html#o17">00148</a>         <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>  nNumVertices;
    171. 

  171. <a name="l00149"></a><a class="code" href="structHeaderStruct__Mesh.html#o18">00149</a>         <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>  nNumSubdivisions;
    172. 

  172. <a name="l00150"></a><a class="code" href="structHeaderStruct__Mesh.html#o19">00150</a>         <span class="keywordtype">float</span>         *pControlPoints;
    173. 

  173. <a name="l00151"></a><a class="code" href="structHeaderStruct__Mesh.html#o20">00151</a>         <span class="keywordtype">float</span>         *pUVs;
    174. 

  174. 00152     } Patch;
    175. 

  175. 00153 }   <a class="code" href="structHeaderStruct__Mesh.html">HeaderStruct_Mesh</a>;
    176. 

  176. 00154 
    177. 

  177. 00155 
    178. 

  178. 00156 <span class="preprocessor">#ifdef PVRT_FIXED_POINT_ENABLE</span>
    179. 

  179. 00157 <span class="preprocessor"></span>
    180. 

  180. 00158 <span class="comment">/*!***************************************************************************</span>
    181. 

  181. 00159 <span class="comment"> Defines the format of a header-object as when converted to</span>
    182. 

  182. 00160 <span class="comment"> fixed point.</span>
    183. 

  183. 00161 <span class="comment">*****************************************************************************/</span>
    184. 

  184. 00162 <span class="comment">/*!***************************************************************************</span>
    185. 

  185. 00163 <span class="comment"> @Struct HeaderStruct_Fixed_Mesh</span>
    186. 

  186. 00164 <span class="comment"> @Brief  Defines the format of a header-object as when converted to fixed point.</span>
    187. 

  187. 00165 <span class="comment">*****************************************************************************/</span>
    188. 

  188. 00166 <span class="keyword">typedef</span> <span class="keyword">struct </span>{
    189. 

  189. 00167     <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>      nNumVertex;
    190. 

  190. 00168     <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>      nNumFaces;
    191. 

  191. 00169     <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>      nNumStrips;
    192. 

  192. 00170     <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>      nFlags;
    193. 

  193. 00171     <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>      nMaterial;
    194. 

  194. 00172     <a class="code" href="PVRTFixedPoint_8h.html#a0">VERTTYPE</a>          fCenter[3];
    195. 

  195. 00173     <a class="code" href="PVRTFixedPoint_8h.html#a0">VERTTYPE</a>          *pVertex;
    196. 

  196. 00174     <a class="code" href="PVRTFixedPoint_8h.html#a0">VERTTYPE</a>          *pUV;
    197. 

  197. 00175     <a class="code" href="PVRTFixedPoint_8h.html#a0">VERTTYPE</a>          *pNormals;
    198. 

  198. 00176     <a class="code" href="PVRTFixedPoint_8h.html#a0">VERTTYPE</a>          *pPackedVertex;
    199. 

  199. 00177     <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>      *pVertexColor;
    200. 

  200. 00178     <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>      *pVertexMaterial;
    201. 

  201. 00179     <span class="keywordtype">unsigned</span> <span class="keywordtype">short</span>    *pFaces;
    202. 

  202. 00180     <span class="keywordtype">unsigned</span> <span class="keywordtype">short</span>    *pStrips;
    203. 

  203. 00181     <span class="keywordtype">unsigned</span> <span class="keywordtype">short</span>    *pStripLength;
    204. 

  204. 00182     <span class="keyword">struct</span>
    205. 

  205. 00183 <span class="keyword">    </span>{
    206. 

  206. 00184         <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>  nType;                <span class="comment">// for the moment, these are left as floats</span>
    207. 

  207. 00185         <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>  nNumPatches;
    208. 

  208. 00186         <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>  nNumVertices;
    209. 

  209. 00187         <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>  nNumSubdivisions;
    210. 

  210. 00188         <span class="keywordtype">float</span>       *pControlPoints;
    211. 

  211. 00189         <span class="keywordtype">float</span>       *pUVs;
    212. 

  212. 00190     } Patch;
    213. 

  213. 00191 }   HeaderStruct_Fixed_Mesh;
    214. 

  214. 00192 
    215. 

  215. 00193     <span class="keyword">typedef</span> HeaderStruct_Fixed_Mesh <a class="code" href="structHeaderStruct__Mesh.html">HeaderStruct_Mesh_Type</a>;
    216. 

  216. 00194 <span class="preprocessor">#else</span>
    217. 

  217. <a name="l00195"></a><a class="code" href="PVRTFixedPoint_8h.html#a35">00195</a> <span class="preprocessor"></span>    <span class="keyword">typedef</span> <a class="code" href="structHeaderStruct__Mesh.html">HeaderStruct_Mesh</a> <a class="code" href="PVRTFixedPoint_8h.html#a35">HeaderStruct_Mesh_Type</a>;
    218. 

  218. 00196 <span class="preprocessor">#endif</span>
    219. 

  219. 00197 <span class="preprocessor"></span>
    220. 

  220. 00198 <span class="comment">// Function prototypes</span>
    221. 

  221. 00199 
    222. 

  222. 00200 <span class="comment">/*!***************************************************************************</span>
    223. 

  223. 00201 <span class="comment"> @Function      PVRTLoadHeaderObject</span>
    224. 

  224. 00202 <span class="comment"> @Input         headerObj           Pointer to object structure in the header file</span>
    225. 

  225. 00203 <span class="comment"> @Return        directly usable geometry in fixed or float format as appropriate</span>
    226. 

  226. 00204 <span class="comment"> @Description   Converts the data exported by MAX to fixed point when used in OpenGL</span>
    227. 

  227. 00205 <span class="comment">                ES common-lite profile.</span>
    228. 

  228. 00206 <span class="comment">*****************************************************************************/</span>
    229. 

  229. 00207 <a class="code" href="PVRTFixedPoint_8h.html#a35">HeaderStruct_Mesh_Type</a>* <a class="code" href="PVRTFixedPoint_8h.html#a36">PVRTLoadHeaderObject</a>(<span class="keyword">const</span> <span class="keywordtype">void</span> *headerObj);
    230. 

  230. 00208 
    231. 

  231. 00209 <span class="comment">/*!***************************************************************************</span>
    232. 

  232. 00210 <span class="comment"> @Function      PVRTUnloadHeaderObject</span>
    233. 

  233. 00211 <span class="comment"> @Input         headerObj           Pointer returned by LoadHeaderObject</span>
    234. 

  234. 00212 <span class="comment"> @Description   Releases memory allocated by LoadHeaderObject when geometry no longer</span>
    235. 

  235. 00213 <span class="comment">                needed.</span>
    236. 

  236. 00214 <span class="comment">*****************************************************************************/</span>
    237. 

  237. 00215 <span class="keywordtype">void</span> <a class="code" href="PVRTFixedPoint_8h.html#a37">PVRTUnloadHeaderObject</a>(HeaderStruct_Mesh_Type* headerObj);
    238. 

  238. 00216 
    239. 

  239. 00217 
    240. 

  240. 00218 <span class="preprocessor">#endif </span><span class="comment">/* _PVRTFIXEDPOINT_H_ */</span>
    241. 

  241. 00219 
    242. 

  242. 00220 <span class="comment">/*****************************************************************************</span>
    243. 

  243. 00221 <span class="comment"> End of file (PVRTFixedPoint.h)</span>
    244. 

  244. 00222 <span class="comment">*****************************************************************************/</span>
    245. 

  245. 00223 
    246. 

  246. </pre></div><br>
    247. 

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    248. 

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    249. 

  249.    href="http://www.imgtec.com/powervr/insider/legal/index.asp">Copyright</A> © 
    250. 

  250.    1999-2008, Imagination Technologies Ltd.</STRONG></FONT></P>
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