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<hr><h1>vertex_buffer_heap.cpp</h1><a href="vertex__buffer__heap_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001
00007 <font class="comment">/* Copyright, 2000-2002 Nevrax Ltd.</font>
00008 <font class="comment"> *</font>
00009 <font class="comment"> * This file is part of NEVRAX NEL.</font>
00010 <font class="comment"> * NEVRAX NEL is free software; you can redistribute it and/or modify</font>
00011 <font class="comment"> * it under the terms of the GNU General Public License as published by</font>
00012 <font class="comment"> * the Free Software Foundation; either version 2, or (at your option)</font>
00013 <font class="comment"> * any later version.</font>
00014 <font class="comment"></font>
00015 <font class="comment"> * NEVRAX NEL is distributed in the hope that it will be useful, but</font>
00016 <font class="comment"> * WITHOUT ANY WARRANTY; without even the implied warranty of</font>
00017 <font class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</font>
00018 <font class="comment"> * General Public License for more details.</font>
00019 <font class="comment"></font>
00020 <font class="comment"> * You should have received a copy of the GNU General Public License</font>
00021 <font class="comment"> * along with NEVRAX NEL; see the file COPYING. If not, write to the</font>
00022 <font class="comment"> * Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,</font>
00023 <font class="comment"> * MA 02111-1307, USA.</font>
00024 <font class="comment"> */</font>
00025
00026 <font class="preprocessor">#include "<a class="code" href="std3d_8h.html">std3d.h</a>"</font>
00027
00028 <font class="preprocessor">#include "<a class="code" href="vertex__buffer__heap_8h.html">3d/vertex_buffer_heap.h</a>"</font>
00029 <font class="preprocessor">#include "<a class="code" href="common_8h.html">nel/misc/common.h</a>"</font>
00030
00031 <font class="keyword">using</font> <font class="keyword">namespace </font>NLMISC;
00032
00033
00034 <font class="keyword">namespace </font>NL3D
00035 {
00036
00037 <font class="comment">// ***************************************************************************</font>
<a name="l00038"></a><a class="code" href="classNL3D_1_1CVertexBufferHeap.html#a0">00038</a> CVertexBufferHeap::CVertexBufferHeap()
00039 {
00040 <a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o5">_Enabled</a>= <font class="keyword">false</font>;
00041 <a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o6">_HardMode</a>= <font class="keyword">false</font>;
00042
00043 <a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o4">_HeapStart</a>= NULL;
00044 <a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o7">_VertexFormat</a>= 0;
00045 <a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o8">_VertexSize</a>= 0;
00046 <a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o9">_MaxVertices</a>= 0;
00047 }
00048
00049 <font class="comment">// ***************************************************************************</font>
<a name="l00050"></a><a class="code" href="classNL3D_1_1CVertexBufferHeap.html#a1">00050</a> CVertexBufferHeap::~CVertexBufferHeap()
00051 {
00052 <a class="code" href="classNL3D_1_1CVertexBufferHeap.html#z905_1">release</a>();
00053 }
00054
00055 <font class="comment">// ***************************************************************************</font>
<a name="l00056"></a><a class="code" href="classNL3D_1_1CVertexBufferHeap.html#z905_0">00056</a> <font class="keywordtype">void</font> CVertexBufferHeap::init(IDriver *driver, uint vertexFormat, uint maxVertices)
00057 {
00058 <a class="code" href="debug_8h.html#a6">nlassert</a>(driver);
00059 <font class="comment">// clean before.</font>
00060 <a class="code" href="classNL3D_1_1CVertexBufferHeap.html#z905_1">release</a>();
00061
00062 <font class="comment">// setup</font>
00063 <a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o0">_Driver</a>= driver;
00064
00065 <font class="comment">// setup the vertexBuffer soft with queried info.</font>
00066 <a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o2">_VBSoft</a>.setVertexFormat(vertexFormat);
00067 <font class="comment">// VertexSize must be a multitple of 4 (Heap alignement ...)</font>
00068 <a class="code" href="debug_8h.html#a6">nlassert</a>( (<a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o2">_VBSoft</a>.getVertexSize()&3) == 0)
00069
00070 <font class="comment">// create the VBHard, if possible</font>
00071 <a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o1">_VBHard</a>= driver->createVertexBufferHard(<a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o2">_VBSoft</a>.getVertexFormat(), <a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o2">_VBSoft</a>.getValueTypePointer(), maxVertices, IDriver::VBHardAGP);
00072
00073 <font class="comment">// Ok</font>
00074 <a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o5">_Enabled</a>= <font class="keyword">true</font>;
00075 <a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o7">_VertexFormat</a>= <a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o2">_VBSoft</a>.getVertexFormat();
00076 <a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o8">_VertexSize</a>= <a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o2">_VBSoft</a>.getVertexSize();
00077 <a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o9">_MaxVertices</a>= maxVertices;
00078
00079 <font class="comment">// Use hard or soft ???</font>
00080 <font class="keywordflow">if</font>(_VBHard)
00081 {
00082 <a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o6">_HardMode</a>= <font class="keyword">true</font>;
00083 <font class="comment">// setup heap start with good AGP ptr.</font>
00084 <a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o4">_HeapStart</a>= (uint8*)<a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o1">_VBHard</a>->lock();
00085 <font class="comment">// just a gestion lock, no vertices have changed.</font>
00086 <a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o1">_VBHard</a>->unlock(0,0);
00087 }
00088 <font class="keywordflow">else</font>
00089 {
00090 <a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o6">_HardMode</a>= <font class="keyword">false</font>;
00091 <font class="comment">// => allocate soft one.</font>
00092 <a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o2">_VBSoft</a>.setNumVertices(maxVertices);
00093 <font class="comment">// setup heap start with good ptr.</font>
00094 <a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o4">_HeapStart</a>= (uint8*)<a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o2">_VBSoft</a>.getVertexCoordPointer();
00095 }
00096
00097 <font class="comment">// setup heap Manager with good ptr.</font>
00098 <a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o3">_HeapManager</a>.<a class="code" href="classNLMISC_1_1CHeapMemory.html#a3">initHeap</a>(<a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o4">_HeapStart</a>, <a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o9">_MaxVertices</a>*<a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o8">_VertexSize</a>);
00099 }
00100 <font class="comment">// ***************************************************************************</font>
<a name="l00101"></a><a class="code" href="classNL3D_1_1CVertexBufferHeap.html#z905_1">00101</a> <font class="keywordtype">void</font> CVertexBufferHeap::release()
00102 {
00103 <font class="keywordflow">if</font>(_VBHard)
00104 {
00105 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o0">_Driver</a>);
00106 <a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o0">_Driver</a>->deleteVertexBufferHard(<a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o1">_VBHard</a>);
00107 }
00108 <a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o1">_VBHard</a>= NULL;
00109 <a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o0">_Driver</a>= NULL;
00110 <a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o4">_HeapStart</a>= NULL;
00111 <font class="comment">// release all memory</font>
00112 <a class="code" href="namespaceNLMISC.html#a222">contReset</a>(<a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o2">_VBSoft</a>);
00113 <a class="code" href="namespaceNLMISC.html#a222">contReset</a>(<a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o3">_HeapManager</a>);
00114
00115 <a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o5">_Enabled</a>= <font class="keyword">false</font>;
00116 <a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o6">_HardMode</a>= <font class="keyword">false</font>;
00117 <a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o7">_VertexFormat</a>= 0;
00118 <a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o8">_VertexSize</a>= 0;
00119 <a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o9">_MaxVertices</a>= 0;
00120 }
00121
00122 <font class="comment">// ***************************************************************************</font>
<a name="l00123"></a><a class="code" href="classNL3D_1_1CVertexBufferHeap.html#z906_0">00123</a> <font class="keywordtype">bool</font> CVertexBufferHeap::allocate(uint numVertices, uint &indexStart)
00124 {
00125 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CVertexBufferHeap.html#z905_2">enabled</a>());
00126
00127 <font class="comment">// allocate into the heap ?</font>
00128 uint8 *ptr= (uint8*)<a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o3">_HeapManager</a>.<a class="code" href="classNLMISC_1_1CHeapMemory.html#a6">allocate</a>(numVertices*<a class="code" href="classNL3D_1_1CVertexBufferHeap.html#z905_5">getVertexSize</a>());
00129 <font class="keywordflow">if</font>(!ptr)
00130 <font class="keywordflow">return</font> <font class="keyword">false</font>;
00131 <font class="keywordflow">else</font>
00132 {
00133 <font class="comment">// compute vertex index</font>
00134 indexStart= (uint)(ptr-<a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o4">_HeapStart</a>);
00135 indexStart/= <a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o8">_VertexSize</a>;
00136 <font class="keywordflow">return</font> <font class="keyword">true</font>;
00137 }
00138 }
00139 <font class="comment">// ***************************************************************************</font>
<a name="l00140"></a><a class="code" href="classNL3D_1_1CVertexBufferHeap.html#z906_1">00140</a> <font class="keywordtype">void</font> CVertexBufferHeap::free(uint indexStart)
00141 {
00142 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CVertexBufferHeap.html#z905_2">enabled</a>());
00143
00144 <font class="comment">// compute ptr to free</font>
00145 uint8 *ptr= <a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o4">_HeapStart</a> + indexStart*<a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o8">_VertexSize</a>;
00146 <font class="comment">// free it.</font>
00147 <a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o3">_HeapManager</a>.<a class="code" href="classNLMISC_1_1CHeapMemory.html#a7">free</a>(ptr);
00148 }
00149
00150 <font class="comment">// ***************************************************************************</font>
<a name="l00151"></a><a class="code" href="classNL3D_1_1CVertexBufferHeap.html#z907_0">00151</a> uint8 *CVertexBufferHeap::lock(uint indexStart)
00152 {
00153 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CVertexBufferHeap.html#z905_2">enabled</a>());
00154
00155 uint8 *ptr;
00156 <font class="keywordflow">if</font>(_HardMode)
00157 {
00158 <font class="comment">// lock the vbHard</font>
00159 ptr= (uint8*)<a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o1">_VBHard</a>->lock();
00160 <a class="code" href="debug_8h.html#a6">nlassert</a>(ptr==<a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o4">_HeapStart</a>);
00161 }
00162 <font class="keywordflow">else</font>
00163 ptr= <a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o4">_HeapStart</a>;
00164
00165 <font class="comment">// index it with index</font>
00166 <font class="keywordflow">return</font> ptr + indexStart*<a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o8">_VertexSize</a>;
00167 }
00168 <font class="comment">// ***************************************************************************</font>
<a name="l00169"></a><a class="code" href="classNL3D_1_1CVertexBufferHeap.html#z907_1">00169</a> <font class="keywordtype">void</font> CVertexBufferHeap::unlock(uint startVert, uint endVert)
00170 {
00171 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CVertexBufferHeap.html#z905_2">enabled</a>());
00172
00173 <font class="keywordflow">if</font>(_HardMode)
00174 <a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o1">_VBHard</a>->unlock(startVert, endVert);
00175 }
00176 <font class="comment">// ***************************************************************************</font>
<a name="l00177"></a><a class="code" href="classNL3D_1_1CVertexBufferHeap.html#z907_2">00177</a> <font class="keywordtype">void</font> CVertexBufferHeap::activate()
00178 {
00179 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CVertexBufferHeap.html#z905_2">enabled</a>());
00180
00181 <font class="keywordflow">if</font>(_HardMode)
00182 <a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o0">_Driver</a>->activeVertexBufferHard(<a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o1">_VBHard</a>);
00183 <font class="keywordflow">else</font>
00184 <a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o0">_Driver</a>->activeVertexBuffer(<a class="code" href="classNL3D_1_1CVertexBufferHeap.html#o2">_VBSoft</a>);
00185 }
00186
00187
00188 } <font class="comment">// NL3D</font>
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