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doxygen="_cgi:http://www.nevrax.org/cgi-bin/nel-search.cgi" href="http://www.nevrax.org/cgi-bin/nel-search.cgi">Search</a> </center> +<hr><h1>mesh_blender.cpp</h1><a href="mesh__blender_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="mesh__blender_8h.html">3d/mesh_blender.h</a>"</font> +00029 <font class="preprocessor">#include "<a class="code" href="driver_8h.html">3d/driver.h</a>"</font> +00030 <font class="preprocessor">#include "<a class="code" href="fast__floor_8h.html">3d/fast_floor.h</a>"</font> +00031 +00032 +00033 <font class="keyword">namespace </font>NL3D { +00034 +00035 +00036 <font class="comment">// ***************************************************************************</font> +<a name="l00037"></a><a class="code" href="classNL3D_1_1CMeshBlender.html#a1">00037</a> <font class="keywordtype">void</font> CMeshBlender::prepareRenderForGlobalAlpha(CMaterial &material, IDriver *drv, <font class="keywordtype">float</font> globalAlpha, uint8 globalAlphaInt, <font class="keywordtype">bool</font> gaDisableZWrite) +00038 { +00039 <font class="comment">// Disable ZWrite??</font> +00040 <font class="keywordflow">if</font>(gaDisableZWrite) +00041 { +00042 <font class="comment">// Backup and set new the zwrite</font> +00043 <a class="code" href="classNL3D_1_1CMeshBlender.html#o1">_BkZWrite</a>=material.getZWrite (); +00044 material.setZWrite (<font class="keyword">false</font>); +00045 } +00046 +00047 <font class="comment">// Backup blend</font> +00048 <a class="code" href="classNL3D_1_1CMeshBlender.html#o2">_BkBlend</a>=material.getBlend (); +00049 material.setBlend (<font class="keyword">true</font>); +00050 +00051 <font class="comment">// Backup opacity and blend</font> +00052 <a class="code" href="classNL3D_1_1CMeshBlender.html#o0">_BkOpacity</a>= material.getOpacity (); +00053 <a class="code" href="classNL3D_1_1CMeshBlender.html#o3">_BkSrcBlend</a>= material.getSrcBlend(); +00054 <a class="code" href="classNL3D_1_1CMeshBlender.html#o4">_BkDstBlend</a>= material.getDstBlend(); +00055 +00056 <font class="comment">// 2 ways: if Blend Constant Color is supported or not.</font> +00057 <font class="keywordflow">if</font>(drv->supportBlendConstantColor()) +00058 { +00059 <font class="comment">// Set opacity to 255 => If AlphaTest is used, AlphaTexture will be multiplied by 1.</font> +00060 material.setOpacity ( 255 ); +00061 +00062 <font class="comment">// set the Blend constant Alpha.</font> +00063 drv->setBlendConstantColor( CRGBA(0,0,0, globalAlphaInt) ); +00064 +00065 <font class="comment">// Active Blend with Blend Constant Alpha .</font> +00066 material.setSrcBlend(CMaterial::blendConstantAlpha); +00067 +00068 <font class="comment">// Don't set dest if we are in additive blend mode</font> +00069 <font class="keywordflow">if</font> ((<a class="code" href="classNL3D_1_1CMeshBlender.html#o2">_BkBlend</a> == <font class="keyword">false</font>) || (<a class="code" href="classNL3D_1_1CMeshBlender.html#o4">_BkDstBlend</a> != CMaterial::one)) +00070 material.setDstBlend(CMaterial::blendConstantInvAlpha); +00071 +00072 <font class="comment">// if material is Alpha Test, no-op. Keep same threshold, since Use Alpha of the BlendConstantColor</font> +00073 <font class="comment">// to do the alpha-blending.</font> +00074 } +00075 <font class="comment">// not supported, ugly way: modify Opacity, and alpha threshold</font> +00076 <font class="keywordflow">else</font> +00077 { +00078 <font class="comment">// New opacity</font> +00079 material.setOpacity (globalAlphaInt); +00080 +00081 <font class="comment">// must ensure Std Blend.</font> +00082 material.setSrcBlend(CMaterial::srcalpha); +00083 +00084 <font class="comment">// Don't set dest if we are in additive blend mode</font> +00085 <font class="keywordflow">if</font> ((<a class="code" href="classNL3D_1_1CMeshBlender.html#o2">_BkBlend</a> == <font class="keyword">false</font>) || (<a class="code" href="classNL3D_1_1CMeshBlender.html#o4">_BkDstBlend</a> != CMaterial::one)) +00086 material.setDstBlend(CMaterial::invsrcalpha); +00087 +00088 <font class="comment">// if material is Alpha Test, must modulate AlphaTest limit to avoid Pop effects</font> +00089 <font class="keywordflow">if</font>(material.getAlphaTest()) +00090 { +00091 <a class="code" href="classNL3D_1_1CMeshBlender.html#o5">_BkAlphaTestThreshold</a>= material.getAlphaTestThreshold(); +00092 material.setAlphaTestThreshold(<a class="code" href="classNL3D_1_1CMeshBlender.html#o5">_BkAlphaTestThreshold</a> * globalAlpha); +00093 } +00094 } +00095 +00096 } +00097 +00098 <font class="comment">// ***************************************************************************</font> +<a name="l00099"></a><a class="code" href="classNL3D_1_1CMeshBlender.html#a2">00099</a> <font class="keywordtype">void</font> CMeshBlender::restoreRender(CMaterial &material, IDriver *drv, <font class="keywordtype">bool</font> gaDisableZWrite) +00100 { +00101 <font class="comment">// Resetup backuped zwrite</font> +00102 <font class="keywordflow">if</font>(gaDisableZWrite) +00103 { +00104 material.setZWrite (<a class="code" href="classNL3D_1_1CMeshBlender.html#o1">_BkZWrite</a>); +00105 } +00106 +00107 <font class="comment">// Resetup backuped blend</font> +00108 material.setBlend (<a class="code" href="classNL3D_1_1CMeshBlender.html#o2">_BkBlend</a>); +00109 +00110 <font class="comment">// Resetup backuped opacity and blend factors</font> +00111 material.setOpacity (<a class="code" href="classNL3D_1_1CMeshBlender.html#o0">_BkOpacity</a>); +00112 material.setSrcBlend(<a class="code" href="classNL3D_1_1CMeshBlender.html#o3">_BkSrcBlend</a>); +00113 material.setDstBlend(<a class="code" href="classNL3D_1_1CMeshBlender.html#o4">_BkDstBlend</a>); +00114 +00115 <font class="comment">// 2 ways: if Blend Constant Color is supported or not.</font> +00116 <font class="keywordflow">if</font>(drv->supportBlendConstantColor()) +00117 { +00118 <font class="comment">// nop</font> +00119 } +00120 <font class="keywordflow">else</font> +00121 { +00122 <font class="comment">// Resetup backuped AlphaTest threshold</font> +00123 <font class="keywordflow">if</font>(material.getAlphaTest()) +00124 { +00125 material.setAlphaTestThreshold(<a class="code" href="classNL3D_1_1CMeshBlender.html#o5">_BkAlphaTestThreshold</a>); +00126 } +00127 } +00128 } +00129 +00130 +00131 <font class="comment">// ***************************************************************************</font> +<a name="l00132"></a><a class="code" href="classNL3D_1_1CMeshBlender.html#a3">00132</a> <font class="keywordtype">void</font> CMeshBlender::prepareRenderForGlobalAlphaCoarseMesh(CMaterial &material, IDriver *drv, <a class="code" href="classNLMISC_1_1CRGBA.html">NLMISC::CRGBA</a> color, <font class="keywordtype">float</font> globalAlpha, <font class="keywordtype">bool</font> gaDisableZWrite) +00133 { +00134 <font class="comment">// Don't need to bkup some values, because CoarseMesh.</font> +00135 +00136 uint8 globalAlphaInt= (uint8)<a class="code" href="namespaceNL3D.html#a362">OptFastFloor</a>(255 * globalAlpha); +00137 +00138 <font class="comment">// Disable ZWrite??</font> +00139 <font class="keywordflow">if</font>(gaDisableZWrite) +00140 material.setZWrite (<font class="keyword">false</font>); +00141 <font class="comment">// Enable blend</font> +00142 material.setBlend (<font class="keyword">true</font>); +00143 +00144 <font class="comment">// bkup color and blend factors.</font> +00145 <a class="code" href="classNL3D_1_1CMeshBlender.html#o6">_BkupColor</a>= material.getColor(); +00146 <a class="code" href="classNL3D_1_1CMeshBlender.html#o3">_BkSrcBlend</a>= material.getSrcBlend(); +00147 <a class="code" href="classNL3D_1_1CMeshBlender.html#o4">_BkDstBlend</a>= material.getDstBlend(); +00148 +00149 <font class="comment">// 2 ways: if Blend Constant Color is supported or not.</font> +00150 <font class="keywordflow">if</font>(drv->supportBlendConstantColor()) +00151 { +00152 <font class="comment">// Set opacity to 255 => AlphaTexture will be multiplied by 1.</font> +00153 color.<a class="code" href="classNLMISC_1_1CRGBA.html#m3">A</a>= 255; +00154 <font class="comment">// change color</font> +00155 material.setColor ( color ); +00156 +00157 <font class="comment">// set the Blend constant Alpha.</font> +00158 drv->setBlendConstantColor( CRGBA(0,0,0, globalAlphaInt) ); +00159 +00160 <font class="comment">// Active Blend with Blend Constant Alpha .</font> +00161 material.setSrcBlend(CMaterial::blendConstantAlpha); +00162 material.setDstBlend(CMaterial::blendConstantInvAlpha); +00163 } +00164 <font class="keywordflow">else</font> +00165 { +00166 <font class="comment">// Set current Alpha blend transparency (in color becausematerial is unlit)</font> +00167 color.<a class="code" href="classNLMISC_1_1CRGBA.html#m3">A</a>= globalAlphaInt; +00168 <font class="comment">// change color</font> +00169 material.setColor ( color ); +00170 +00171 <font class="comment">// Active Blend with Blend Constant Alpha .</font> +00172 material.setSrcBlend(CMaterial::srcalpha); +00173 material.setDstBlend(CMaterial::invsrcalpha); +00174 +00175 <font class="comment">// must modulate AlphaTest limit to avoid Pop effects</font> +00176 material.setAlphaTestThreshold(0.5f * globalAlpha); +00177 } +00178 } +00179 +00180 <font class="comment">// ***************************************************************************</font> +<a name="l00181"></a><a class="code" href="classNL3D_1_1CMeshBlender.html#a4">00181</a> <font class="keywordtype">void</font> CMeshBlender::restoreRenderCoarseMesh(CMaterial &material, IDriver *drv, <font class="keywordtype">bool</font> gaDisableZWrite) +00182 { +00183 <font class="comment">// Resetup backuped color and blend factors</font> +00184 material.setColor ( <a class="code" href="classNL3D_1_1CMeshBlender.html#o6">_BkupColor</a> ); +00185 material.setSrcBlend(<a class="code" href="classNL3D_1_1CMeshBlender.html#o3">_BkSrcBlend</a>); +00186 material.setDstBlend(<a class="code" href="classNL3D_1_1CMeshBlender.html#o4">_BkDstBlend</a>); +00187 +00188 <font class="comment">// ReEnable ZWrite??</font> +00189 <font class="keywordflow">if</font>(gaDisableZWrite) +00190 material.setZWrite (<font class="keyword">true</font>); +00191 <font class="comment">// Reset blend</font> +00192 material.setBlend (<font class="keyword">false</font>); +00193 +00194 <font class="comment">// 2 ways: if Blend Constant Color is supported or not.</font> +00195 <font class="keywordflow">if</font>(drv->supportBlendConstantColor()) +00196 { +00197 <font class="comment">// nop</font> +00198 } +00199 <font class="keywordflow">else</font> +00200 { +00201 <font class="comment">// reset AlphaTest limit</font> +00202 material.setAlphaTestThreshold(0.5f); +00203 } +00204 } +00205 +00206 } <font class="comment">// NL3D</font> +</pre></div> + +<!-- footer --> +<BR><FONT Size=+5> </FONT> +</TD> +<TD WIDTH=15><IMG SRC=http://www.nevrax.org/inc/img/pixel.gif WIDTH=15 HEIGHT=15 BORDER=0 ALT=""></TD> +</TR> +</TABLE> +</BODY> +</HTML> |