aboutsummaryrefslogtreecommitdiff
path: root/docs/doxygen/nel/mesh__blender_8cpp-source.html
blob: 163ae96b224b08e02904dece66154a4108c397cc (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
<!doctype html public "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
<HTML>
<HEAD>
	<TITLE>nevrax.org : docs</TITLE>
	<LINK REL=stylesheet TYPE="text/css" HREF="/inc/css/nevrax.css">
	<link href="doxygen.css" rel="stylesheet" type="text/css">
</HEAD>
<BODY MARGINHEIGHT="0" MARGINWIDTH="0">

<!-- uplinks -->
<TABLE CELLSPACING=0 CELLPADDING=0  BORDER=0>
 <TR>
        <TD WIDTH=16><IMG  SRC="/inc/img/pixel.gif" WIDTH="16" HEIGHT="16" BORDER=0 ALT=""></TD>
        <TD WIDTH=140 BGCOLOR=#dddddd><IMG  SRC="/inc/img/pixel.gif" WIDTH="140" HEIGHT="16" BORDER=0 ALT=""></TD>
        <TD WIDTH=16><IMG  SRC="/inc/img/pixel.gif" WIDTH="16" HEIGHT="16" BORDER=0 ALT=""></TD>
        <TD><IMG width=6 height=14 SRC="/inc/img/reddots.gif" ALT="#" VSPACE=2 HSPACE=2 BORDER=0 ></TD><TD VALIGN=middle>&nbsp;<A CLASS=uplinks HREF=><b>Home</B></FONT></A>&nbsp;&nbsp;&nbsp;</TD>
        <TD><IMG  width=6 height=14  SRC="/inc/img/reddots.gif" ALT="#" VSPACE=2 HSPACE=2 BORDER=0 ></TD><TD VALIGN=middle>&nbsp;<A CLASS=uplinks HREF=http://www.nevrax.com><b>nevrax.com</B></FONT></A>&nbsp;&nbsp;&nbsp;</TD>
 </TR>
</TABLE> 

<!-- banner Nevrax -->
<TABLE CELLSPACING=0 CELLPADDING=0  BORDER=0 WIDTH=100%>
 <TR><TD  BGCOLOR="#000000" BACKGROUND="/inc/img/black_banner.jpg"><A HREF=""><IMG  SRC="/inc/img/nevrax.gif" WIDTH="170" HEIGHT="45" BORDER=0 ALT="Nevrax" ></A></TD></TR>
</TABLE>

<!-- main table -->
<TABLE CELLSPACING=0 CELLPADDING=0  BORDER=0 height=100%>
 <TR>
	<TD WIDTH=16><IMG  SRC="/inc/img/pixel.gif" WIDTH="16" HEIGHT="10" BORDER=0 ALT=""></TD>
	<TD WIDTH=140   BGCOLOR=#dddddd VALIGN=TOP ALIGN=middle><IMG  SRC="/inc/img/pixel.gif" WIDTH="140" HEIGHT="10" BORDER=0 ALT="">

		<!------ Begin Box ------>
		<TABLE BORDER=0 CELLSPACING=0 CELLPADDING=0 BGCOLOR=black><TR><TD><TABLE border=0  cellspacing=2 cellpadding=0 width=120><tr><TD ALIGN=middle bgcolor=black>
		<FONT COLOR=white FACE="sans-serif"><B>Nevrax.org</B></FONT></TD></TR><tr><td  colspan=2 bgcolor=#FFFFFF>
		<TABLE cellspacing=0 cellpadding=1 border=0>
			<tr><td ALIGN=middle><a  class='linkbox' href="/news/" TITLE="Rubrique news"><img width=13 height=15  hspace=5 border=0 src=/inc/img/picto-news.gif ALT=#></A></td><td><a  class='linkbox' href="/news/" TITLE="News">News</a></td></tr>
			<tr><td ALIGN=middle><a  class='linkbox' href="/mail/" TITLE="Rubrique mail"><img width=15 height=11  hspace=5 border=0 src=/inc/img/picto-mail.gif ALT=#></A></td><td><a  class='linkbox' href="/mail/" TITLE="Mailing list archive">Mailing-list</a></td></tr>
			<tr><td ALIGN=middle><a  class='linkbox' href="/docs/" TITLE="Rubrique docs"><img width=14 height=16  hspace=5 border=0 src=/inc/img/picto-docs.gif ALT=#></A></td><td><a  class='linkbox' href="/docs/" TITLE="Documentation">Documentation</a></td></tr>
			<tr><td ALIGN=middle><a  class='linkbox' href="/cvs/" TITLE="Rubrique cvs"><img width=13 height=17  hspace=5 border=0 src=/inc/img/picto-cvs.gif ALT=#></A></td><td><a  class='linkbox' href="/cvs/" TITLE="CVS Web">CVS</a></td></tr>
			<tr><td ALIGN=middle><a  class='linkbox' href="/bugs/" TITLE="Rubrique bugs"><img width=20 height=16  hspace=5 border=0 src=/inc/img/picto-bugs.gif ALT=#></A></td><td><a  class='linkbox' href="/bugs/" TITLE="Bugtracking">Bugs</a></td></tr>
			<tr><td ALIGN=middle><a  class='linkbox' href="/GPL.php3" TITLE="Rubrique license"><img  width=18 height=12   hspace=5 border=0 src=/inc/img/picto-gpl.gif ALT=#></A></td><td><a  class='linkbox' href="/GPL.php3" TITLE="License">License</a></td></tr>
		</TABLE>
		</TD></TR></TABLE></TD></TR></TABLE>
		<!------ End Box  ------>

	</TD>
	<TD WIDTH=15><IMG  SRC="/inc/img/pixel.gif" WIDTH="16" HEIGHT="16" BORDER=0 ALT=""></TD>
	<TD ALIGN=left valign=top><IMG  SRC="/inc/img/pixel.gif" WIDTH="140" HEIGHT="10" BORDER=0 ALT="">

<!-- title -->
<TABLE  background="/inc/img/redline.gif" CELLSPACING=0 CELLPADDING=0  BORDER=0 width=100%><tr><td>
<A HREF="/docs/"><img src="/inc/img/t_docs.gif" ALT="Docs" HEIGHT=20 BORDER=0></A>
</td><td><IMG  SRC="/inc/img/pixel.gif" WIDTH="1" HEIGHT="1" BORDER=0 ALT="">
</td></tr></table>
&nbsp;

<!-- block -->
<TABLE  bgcolor="#dddddd" CELLSPACING=0 CELLPADDING=0  BORDER=0 width=100%><tr><td width=1% valign=middle><img width=6 height=14 hspace=2 vspace=2 src="/inc/img/reddots.gif"></TD>
	<TD><B>Documentation</B></TD>
	<TD ALIGN=RIGHT>&nbsp;</td>
</tr></table>
<!-- Generated by Doxygen 1.2.14 -->
<center>
<a class="qindex" href="index.html">Main Page</a> &nbsp; <a class="qindex" href="namespaces.html">Namespace List</a> &nbsp; <a class="qindex" href="hierarchy.html">Class Hierarchy</a> &nbsp; <a class="qindex" href="classes.html">Alphabetical List</a> &nbsp; <a class="qindex" href="annotated.html">Compound List</a> &nbsp; <a class="qindex" href="files.html">File List</a> &nbsp; <a class="qindex" href="namespacemembers.html">Namespace Members</a> &nbsp; <a class="qindex" href="functions.html">Compound Members</a> &nbsp; <a class="qindex" href="globals.html">File Members</a> &nbsp; <a class="qindex" href="pages.html">Related Pages</a> &nbsp; <a class="qindexRef" doxygen="_cgi:/cgi-bin/nel-search.cgi" href="/cgi-bin/nel-search.cgi">Search</a> &nbsp; </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 &amp;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-&gt;supportBlendConstantColor())
00058         {
00059                 <font class="comment">// Set opacity to 255 =&gt; 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-&gt;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 &amp;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-&gt;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 &amp;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-&gt;supportBlendConstantColor())
00151         {
00152                 <font class="comment">// Set opacity to 255 =&gt; 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-&gt;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 &amp;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-&gt;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>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; </FONT>
</TD>
<TD WIDTH=15><IMG  SRC=/inc/img/pixel.gif WIDTH=15 HEIGHT=15 BORDER=0 ALT=""></TD>
</TR>
</TABLE>
</BODY>
</HTML>