Mercurial > octave-nkf
annotate libinterp/dldfcn/__osmesa_print__.cc @ 19906:ed5ee3f610db
Correct tests using std::string::find_XXX which did not use std::string::npos.
* symtab.cc (find_function): For old-style class syntax, avoid setting
method == dispatch if there is no dir_sep_str.
* __osmesa_print__.cc: Correctly check for pipe command versus filename.
* audioread.cc: Correctly find extension of file after '.'.
author | Rik <rik@octave.org> |
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date | Fri, 27 Feb 2015 09:31:11 -0800 |
parents | 19755f4fc851 |
children | 6b7aee95c54c |
rev | line source |
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1 /* |
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2 |
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3 Copyright (C) 2015 Andreas Weber <andy.weber.aw@gmail.com> |
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4 |
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5 This file is part of Octave. |
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6 |
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7 Octave is free software; you can redistribute it and/or modify it |
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8 under the terms of the GNU General Public License as published by the |
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9 Free Software Foundation; either version 3 of the License, or (at your |
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10 option) any later version. |
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11 |
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12 Octave is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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15 for more details. |
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16 |
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17 You should have received a copy of the GNU General Public License |
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18 along with Octave; see the file COPYING. If not, see |
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19 <http://www.gnu.org/licenses/>. |
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20 |
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21 This code is based on Brian Pauls' src/osdemos/osdemo.c |
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22 from git://anongit.freedesktop.org/mesa/demos |
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23 |
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24 */ |
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25 |
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26 #ifdef HAVE_CONFIG_H |
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27 #include <config.h> |
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28 #endif |
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29 |
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30 #include "oct-locbuf.h" |
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31 #include "unwind-prot.h" |
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32 |
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33 #include "defun-dld.h" |
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34 #include "gl-render.h" |
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35 #include "gl2ps-renderer.h" |
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36 #include "graphics.h" |
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37 #include "gripes.h" |
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38 |
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39 #if defined (HAVE_OSMESA_H) |
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40 #include "osmesa.h" |
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41 #elif defined (HAVE_GL_OSMESA_H) |
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42 #include "GL/osmesa.h" |
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43 #endif |
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44 |
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45 #if defined (HAVE_OSMESA) && defined (HAVE_OPENGL) |
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46 static void |
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47 close_fcn (FILE *f) |
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48 { |
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49 gnulib::fclose (f); |
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50 } |
19797 | 51 |
52 static void | |
53 reset_visibility (figure::properties *fp) | |
54 { | |
55 fp->set_visible ("on"); | |
56 } | |
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57 #endif |
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58 |
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59 DEFUN_DLD(__osmesa_print__, args, , |
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60 "-*- texinfo -*-\n\ |
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61 @deftypefn {Loadable Function} {} __osmesa_print__ (@var{h}, @var{file}, @var{term})\n\ |
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62 @deftypefnx {Loadable Function} {@var{img} =} __osmesa_print__ (@var{h})\n\ |
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63 Print figure @var{h} using OSMesa and gl2ps for vector formats.\n\ |
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64 \n\ |
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65 This is a private internal function.\n\ |
19797 | 66 \n\ |
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67 The first method calls gl2ps with the appropriate @var{term} and writes\n\ |
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68 the output of gl2ps to @var{file}. If the first character of @var{file}\n\ |
19797 | 69 is @qcode{|}, then a process is started and the output of gl2ps is piped\n\ |
70 to it.\n\ | |
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71 \n\ |
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72 Valid options for @var{term}, which can be concatenated in one string, are:\n\ |
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73 \n\ |
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74 @table @asis\n\ |
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75 @item @qcode{eps}, @qcode{pdf}, @qcode{ps}, @qcode{svg}, @qcode{pgf}, @qcode{tex}\n\ |
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76 Select output format.\n\ |
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77 \n\ |
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78 @item @qcode{is2D}\n\ |
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79 Use GL2PS_SIMPLE_SORT instead of GL2PS_BSP_SORT as Z-depth sorting algorithm.\n\ |
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80 \n\ |
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81 @item @qcode{notext}\n\ |
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82 Don't render text.\n\ |
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83 @end table\n\ |
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84 \n\ |
19797 | 85 The second method doesn't use gl2ps and returns a RGB image in @var{img}\n\ |
86 instead.\n\ | |
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87 \n\ |
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88 @end deftypefn") |
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89 { |
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90 octave_value_list retval; |
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91 |
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92 #if ! defined (HAVE_OSMESA) |
19797 | 93 gripe_disabled_feature ("__osmesa_print__", "offscreen rendering"); |
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94 #else |
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95 |
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96 int nargin = args.length (); |
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97 |
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98 if (! (nargin == 1 || nargin == 3)) |
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99 { |
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100 print_usage (); |
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101 return retval; |
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102 } |
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103 |
19797 | 104 if (nargin == 3) |
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105 { |
19797 | 106 if (! (args(1).is_string () && args(2).is_string ())) |
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107 { |
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108 error ("__osmesa_print__: FILE and TERM has to be strings"); |
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109 return retval; |
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110 } |
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111 |
19797 | 112 #ifndef HAVE_GL2PS_H |
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113 error ("__osmesa_print__: Octave has been compiled without gl2ps"); |
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114 return retval; |
19797 | 115 #endif |
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116 } |
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117 |
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118 int h = args(0).double_value (); |
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119 graphics_object fobj = gh_manager::get_object (h); |
19797 | 120 if (! (fobj && fobj.isa ("figure"))) |
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121 { |
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122 error ("__osmesa_print__: H has to be a valid figure handle"); |
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123 return retval; |
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124 } |
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125 |
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126 figure::properties& fp = |
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127 dynamic_cast<figure::properties&> (fobj.get_properties ()); |
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128 |
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129 bool internal = true; |
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130 Matrix bb = fp.get_boundingbox (internal); |
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131 |
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132 int Width = bb(2); |
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133 int Height = bb(3); |
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134 |
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135 // Create an RGBA-mode context, specify Z=16, stencil=0, accum=0 sizes |
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136 OSMesaContext ctx = OSMesaCreateContextExt (OSMESA_RGBA, 16, 0, 0, NULL); |
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137 if (! ctx) |
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138 { |
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139 error ("__osmesa_print__: OSMesaCreateContext failed!\n"); |
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140 return retval; |
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141 } |
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142 |
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143 // Allocate the image buffer |
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144 OCTAVE_LOCAL_BUFFER (GLubyte, buffer, 4 * Width * Height); |
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145 |
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146 // Bind the buffer to the context and make it current |
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147 if (! OSMesaMakeCurrent (ctx, buffer, GL_UNSIGNED_BYTE, Width, Height)) |
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148 { |
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149 error ("__osmesa_print__: OSMesaMakeCurrent failed!\n"); |
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150 return retval; |
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151 } |
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152 |
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153 // Test for a bug in OSMesa with version < 9.0 |
19797 | 154 // |
155 // Unfortunately the macros OSMESA_MAJOR_VERSION and | |
156 // OSMESA_MINOR_VERSION weren't updated between many releases and | |
157 // can't be used for detection. (Version 8.0 until 9.1.4 all return | |
158 // MAJOR 6, MINOR 5) | |
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159 int z, s; |
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160 glGetIntegerv (GL_DEPTH_BITS, &z); |
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161 glGetIntegerv (GL_STENCIL_BITS, &s); |
19797 | 162 if (z != 16 || s != 0) |
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163 error ("__osmesa_print__: Depth and stencil doesn't match," |
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164 " are you sure you are using OSMesa >= 9.0?"); |
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165 |
19797 | 166 unwind_protect outer_frame; |
167 | |
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168 bool v = fp.is_visible (); |
19797 | 169 |
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170 if (v) |
19797 | 171 { |
172 outer_frame.add_fcn (reset_visibility, &fp); | |
173 | |
174 fp.set_visible ("off"); | |
175 } | |
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176 |
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177 if (nargin == 3) |
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178 { |
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179 // use gl2ps |
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180 std::string file = args(1).string_value (); |
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181 std::string term = args(2).string_value (); |
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182 |
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183 if (! error_state) |
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184 { |
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185 size_t pos = file.find_first_not_of ("|"); |
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186 if (pos != std::string::npos) |
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187 { |
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188 // create process and pipe gl2ps output to it |
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189 std::string cmd = file.substr (pos); |
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190 gl2ps_print (fobj, cmd, term); |
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191 } |
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192 else |
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193 { |
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194 // write gl2ps output directly to file |
19797 | 195 FILE *filep = gnulib::fopen (file.c_str (), "w"); |
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196 |
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197 if (filep) |
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198 { |
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199 unwind_protect frame; |
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200 |
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201 frame.add_fcn (close_fcn, filep); |
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202 |
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203 glps_renderer rend (filep, term); |
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204 rend.draw (fobj, ""); |
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205 |
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206 // Make sure buffered commands are finished!!! |
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207 glFinish (); |
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208 } |
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209 else |
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210 error ("__osmesa_print__: Couldn't create file \"%s\"", file.c_str ()); |
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211 } |
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212 } |
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213 } |
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214 else |
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215 { |
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216 // return RGB image |
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217 opengl_renderer rend; |
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218 rend.draw (fobj); |
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219 |
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220 // Make sure buffered commands are finished!!! |
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221 glFinish (); |
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222 |
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223 dim_vector dv (4, Width, Height); |
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224 |
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225 // FIXME: We expect that GLubyte is 1 Byte long. |
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226 // Adapt code if this isn't always true |
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227 assert (sizeof (GLubyte) == 1); |
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228 uint8NDArray img (dv); |
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229 unsigned char *p = reinterpret_cast<unsigned char*>(img.fortran_vec ()); |
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230 memcpy (p, buffer, (4 * Width * Height)); |
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231 |
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232 Array<octave_idx_type> perm (dim_vector (3, 1)); |
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233 perm(0) = 2; |
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234 perm(1) = 1; |
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235 perm(2) = 0; |
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236 |
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237 Array<idx_vector> idx (dim_vector (3, 1)); |
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238 |
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239 // Flip Y |
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240 idx(0) = idx_vector::make_range (Height - 1, -1, Height); |
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241 idx(1) = idx_vector::colon; |
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242 |
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243 // Remove alpha channel |
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244 idx(2) = idx_vector (0, 3); |
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245 retval = octave_value (img.permute (perm). index(idx)); |
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246 } |
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247 |
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248 OSMesaDestroyContext (ctx); |
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249 |
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250 #endif |
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251 return retval; |
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252 } |
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253 |
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254 /* |
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255 %!testif HAVE_OSMESA |
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256 %! h = figure ("visible", "off"); |
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257 %! fn = tempname (); |
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258 %! sombrero (); |
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259 %! __osmesa_print__ (h, fn, "svg"); |
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260 %! assert (stat (fn).size, 2692270, -0.1); |
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261 %! unlink (fn); |
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262 %! img = __osmesa_print__ (h); |
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263 %! assert (size (img), [get(h, "position")([4, 3]), 3]) |
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264 %! ## Use pixel sum per RGB channel as fingerprint |
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265 %! img_fp = squeeze (sum (sum (img), 2)); |
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266 %! assert (img_fp, [52942515; 54167797; 56158178], -0.05); |
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267 |
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268 %!testif HAVE_OSMESA |
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269 %! h = figure ("visible", "off"); |
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270 %! fn = tempname (); |
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271 %! plot (sin (0:0.1:2*pi)); |
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272 %! __osmesa_print__ (h, fn, "svgis2d"); |
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273 %! assert (stat (fn).size, 7438, -0.05); |
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274 %! unlink (fn); |
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275 %! img = __osmesa_print__ (h); |
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276 %! assert (size (img), [get(h, "position")([4, 3]), 3]) |
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277 %! ## Use pixel sum per RGB channel as fingerprint |
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278 %! img_fp = squeeze (sum (sum (img), 2)); |
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279 %! assert (img_fp, [59281711; 59281711; 59482179], -0.05); |
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280 */ |