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annotate libinterp/dldfcn/__osmesa_print__.cc @ 20852:1142cf6abc0d

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2015 Code Sprint: remove class of function from docstring for all C++ files.
author Rik <rik@octave.org>
date Sat, 12 Dec 2015 07:40:03 -0800
parents 66cd994d1b79
children b17fda023ca6
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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 }
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51
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52 static void
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53 reset_visibility (figure::properties *fp)
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54 {
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55 fp->set_visible ("on");
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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 {} {} __osmesa_print__ (@var{h}, @var{file}, @var{term})\n\
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62 @deftypefnx {} {@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\
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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\
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69 is @qcode{|}, then a process is started and the output of gl2ps is piped\n\
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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\
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85 The second method doesn't use gl2ps and returns a RGB image in @var{img}\n\
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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)
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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 print_usage ();
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100
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101 if (nargin == 3)
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102 {
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103 if (! (args(1).is_string () && args(2).is_string ()))
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104 error ("__osmesa_print__: FILE and TERM must be strings");
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105
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106 #ifndef HAVE_GL2PS_H
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107 error ("__osmesa_print__: Octave has been compiled without gl2ps");
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108 #endif
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109 }
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110
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111 int h = args(0).double_value ();
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112 graphics_object fobj = gh_manager::get_object (h);
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113 if (! (fobj && fobj.isa ("figure")))
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114 error ("__osmesa_print__: H must be a valid figure handle");
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115
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116 figure::properties& fp =
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117 dynamic_cast<figure::properties&> (fobj.get_properties ());
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118
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119 bool internal = true;
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120 Matrix bb = fp.get_boundingbox (internal);
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121
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122 GLsizei Width = static_cast<GLsizei> (bb(2));
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123 GLsizei Height = static_cast<GLsizei> (bb(3));
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124
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125 // Create an RGBA-mode context, specify Z=16, stencil=0, accum=0 sizes
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126 OSMesaContext ctx = OSMesaCreateContextExt (OSMESA_RGBA, 16, 0, 0, NULL);
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127 if (! ctx)
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128 error ("__osmesa_print__: OSMesaCreateContext failed!\n");
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129
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130 // Allocate the image buffer
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131 OCTAVE_LOCAL_BUFFER (GLubyte, buffer, 4 * Width * Height);
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132
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133 // Bind the buffer to the context and make it current
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134 if (! OSMesaMakeCurrent (ctx, buffer, GL_UNSIGNED_BYTE, Width, Height))
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135 error ("__osmesa_print__: OSMesaMakeCurrent failed!\n");
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136
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137 // Test for a bug in OSMesa with version < 9.0
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138 //
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139 // Unfortunately the macros OSMESA_MAJOR_VERSION and OSMESA_MINOR_VERSION
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140 // weren't updated between many releases and can't be used for detection.
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141 // (Version 8.0 until 9.1.4 all return MAJOR 6, MINOR 5)
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142 GLint z, s;
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143 glGetIntegerv (GL_DEPTH_BITS, &z);
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144 glGetIntegerv (GL_STENCIL_BITS, &s);
19762
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145 if (z != 16 || s != 0)
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146 error ("__osmesa_print__: Depth and stencil doesn't match,"
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147 " are you sure you are using OSMesa >= 9.0?");
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148
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149 unwind_protect outer_frame;
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150
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151 bool v = fp.is_visible ();
19762
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152
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153 if (v)
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154 {
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155 outer_frame.add_fcn (reset_visibility, &fp);
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156
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157 fp.set_visible ("off");
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158 }
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159
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160 if (nargin == 3)
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161 {
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162 // use gl2ps
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163 #ifndef HAVE_GL2PS_H
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164 gripe_disabled_feature ("__osmesa_print__", "gl2ps");
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165 #else
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166 std::string file = args(1).string_value ();
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167 std::string term = args(2).string_value ();
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168
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diff changeset
169 size_t pos_p = file.find_first_of ("|");
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170 size_t pos_c = file.find_first_not_of ("| ");
19883
e814e202cd84 Account for whitespace and other anomalies in print function pipe/file string.
Daniel J Sebald <daniel.sebald@ieee.org>
parents: 19873
diff changeset
171
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diff changeset
172 if (pos_p == std::string::npos && pos_c == std::string::npos)
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diff changeset
173 error ("__osmesa_print__: empty output ''");
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diff changeset
174 else if (pos_c == std::string::npos)
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diff changeset
175 error ("__osmesa_print__: empty pipe '|'");
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diff changeset
176 else if (pos_p != std::string::npos && pos_p < pos_c)
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diff changeset
177 {
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178 // create process and pipe gl2ps output to it
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diff changeset
179 std::string cmd = file.substr (pos_c);
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diff changeset
180 gl2ps_print (fobj, cmd, term);
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181 }
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182 else
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diff changeset
183 {
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184 // write gl2ps output directly to file
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diff changeset
185 FILE *filep = gnulib::fopen (file.substr (pos_c).c_str (), "w");
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186
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187 if (filep)
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59ad278cfb98 __opengl_print__.m: Use OSMesa for offscreen rendering (Bug #33180)
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188 {
20554
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diff changeset
189 unwind_protect frame;
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diff changeset
190
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diff changeset
191 frame.add_fcn (close_fcn, filep);
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diff changeset
192
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193 glps_renderer rend (filep, term);
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diff changeset
194 rend.draw (fobj, "");
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195
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196 // Make sure buffered commands are finished!!!
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197 glFinish ();
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198 }
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199 else
20554
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diff changeset
200 error ("__osmesa_print__: Couldn't create file \"%s\"", file.c_str ());
19702
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201 }
20095
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diff changeset
202 #endif
19702
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203 }
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204 else
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205 {
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206 // return RGB image
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207 opengl_renderer rend;
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208 rend.draw (fobj);
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209
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210 // Make sure buffered commands are finished!!!
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211 glFinish ();
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212
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213 dim_vector dv (4, Width, Height);
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214
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215 // FIXME: We expect that GLubyte is 1 Byte long.
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216 // Adapt code if this isn't always true
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217 assert (sizeof (GLubyte) == 1);
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218 uint8NDArray img (dv);
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219 unsigned char *p = reinterpret_cast<unsigned char*>(img.fortran_vec ());
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220 memcpy (p, buffer, (4 * Width * Height));
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221
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222 Array<octave_idx_type> perm (dim_vector (3, 1));
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223 perm(0) = 2;
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224 perm(1) = 1;
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diff changeset
225 perm(2) = 0;
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diff changeset
226
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diff changeset
227 Array<idx_vector> idx (dim_vector (3, 1));
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228
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229 // Flip Y
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230 idx(0) = idx_vector::make_range (Height - 1, -1, Height);
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diff changeset
231 idx(1) = idx_vector::colon;
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diff changeset
232
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233 // Remove alpha channel
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diff changeset
234 idx(2) = idx_vector (0, 3);
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235 retval = octave_value (img.permute (perm). index(idx));
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236 }
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237
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238 OSMesaDestroyContext (ctx);
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diff changeset
239
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diff changeset
240 #endif
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241 return retval;
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242 }
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diff changeset
243
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parents:
diff changeset
244 /*
19913
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diff changeset
245 ## FIXME: osmesa does not work correctly on Windows platforms.
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246 ## This is not critical, since this facility will mostly be used in
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diff changeset
247 ## the future for generating the images in Octave's own documentation.
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diff changeset
248 ## For the moment, disable these tests on PC's and Macs.
20095
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diff changeset
249 %!testif HAVE_OSMESA, HAVE_GL2PS_H
19913
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parents: 19883
diff changeset
250 %! if (isunix ())
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diff changeset
251 %! h = figure ("visible", "off");
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diff changeset
252 %! fn = tempname ();
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diff changeset
253 %! sombrero ();
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diff changeset
254 %! __osmesa_print__ (h, fn, "svg");
d9f6260cf20a Disable __osmesa_print__ tests on non-unix platforms (bug #44338).
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parents: 19883
diff changeset
255 %! assert (stat (fn).size, 2692270, -0.1);
d9f6260cf20a Disable __osmesa_print__ tests on non-unix platforms (bug #44338).
Rik <rik@octave.org>
parents: 19883
diff changeset
256 %! unlink (fn);
d9f6260cf20a Disable __osmesa_print__ tests on non-unix platforms (bug #44338).
Rik <rik@octave.org>
parents: 19883
diff changeset
257 %! img = __osmesa_print__ (h);
d9f6260cf20a Disable __osmesa_print__ tests on non-unix platforms (bug #44338).
Rik <rik@octave.org>
parents: 19883
diff changeset
258 %! assert (size (img), [get(h, "position")([4, 3]), 3])
d9f6260cf20a Disable __osmesa_print__ tests on non-unix platforms (bug #44338).
Rik <rik@octave.org>
parents: 19883
diff changeset
259 %! ## Use pixel sum per RGB channel as fingerprint
d9f6260cf20a Disable __osmesa_print__ tests on non-unix platforms (bug #44338).
Rik <rik@octave.org>
parents: 19883
diff changeset
260 %! img_fp = squeeze (sum (sum (img), 2));
d9f6260cf20a Disable __osmesa_print__ tests on non-unix platforms (bug #44338).
Rik <rik@octave.org>
parents: 19883
diff changeset
261 %! assert (img_fp, [52942515; 54167797; 56158178], -0.05);
d9f6260cf20a Disable __osmesa_print__ tests on non-unix platforms (bug #44338).
Rik <rik@octave.org>
parents: 19883
diff changeset
262 %! endif
19702
a81177f4bfe6 Add __osmesa_print__.cc for offscreen rendering with OpenGL
Andreas Weber <andy.weber.aw@gmail.com>
parents:
diff changeset
263
20095
bb59bdbdb8ac Fix compilation error when building with OSMesa but without gl2ps (bug #44870)
Andreas Weber <andy.weber.aw@gmail.com>
parents: 20047
diff changeset
264 %!testif HAVE_OSMESA, HAVE_GL2PS_H
19913
d9f6260cf20a Disable __osmesa_print__ tests on non-unix platforms (bug #44338).
Rik <rik@octave.org>
parents: 19883
diff changeset
265 %! if (isunix ())
d9f6260cf20a Disable __osmesa_print__ tests on non-unix platforms (bug #44338).
Rik <rik@octave.org>
parents: 19883
diff changeset
266 %! h = figure ("visible", "off");
d9f6260cf20a Disable __osmesa_print__ tests on non-unix platforms (bug #44338).
Rik <rik@octave.org>
parents: 19883
diff changeset
267 %! fn = tempname ();
d9f6260cf20a Disable __osmesa_print__ tests on non-unix platforms (bug #44338).
Rik <rik@octave.org>
parents: 19883
diff changeset
268 %! plot (sin (0:0.1:2*pi));
d9f6260cf20a Disable __osmesa_print__ tests on non-unix platforms (bug #44338).
Rik <rik@octave.org>
parents: 19883
diff changeset
269 %! __osmesa_print__ (h, fn, "svgis2d");
20047
f1b67f6e6e45 __osmesa_print__.cc: Increase non-critical relative tolerance in BIST test.
Rik <rik@octave.org>
parents: 19921
diff changeset
270 %! assert (stat (fn).size, 7438, -0.1);
19913
d9f6260cf20a Disable __osmesa_print__ tests on non-unix platforms (bug #44338).
Rik <rik@octave.org>
parents: 19883
diff changeset
271 %! unlink (fn);
d9f6260cf20a Disable __osmesa_print__ tests on non-unix platforms (bug #44338).
Rik <rik@octave.org>
parents: 19883
diff changeset
272 %! img = __osmesa_print__ (h);
d9f6260cf20a Disable __osmesa_print__ tests on non-unix platforms (bug #44338).
Rik <rik@octave.org>
parents: 19883
diff changeset
273 %! assert (size (img), [get(h, "position")([4, 3]), 3])
d9f6260cf20a Disable __osmesa_print__ tests on non-unix platforms (bug #44338).
Rik <rik@octave.org>
parents: 19883
diff changeset
274 %! ## Use pixel sum per RGB channel as fingerprint
d9f6260cf20a Disable __osmesa_print__ tests on non-unix platforms (bug #44338).
Rik <rik@octave.org>
parents: 19883
diff changeset
275 %! img_fp = squeeze (sum (sum (img), 2));
d9f6260cf20a Disable __osmesa_print__ tests on non-unix platforms (bug #44338).
Rik <rik@octave.org>
parents: 19883
diff changeset
276 %! assert (img_fp, [59281711; 59281711; 59482179], -0.05);
d9f6260cf20a Disable __osmesa_print__ tests on non-unix platforms (bug #44338).
Rik <rik@octave.org>
parents: 19883
diff changeset
277 %! endif
19702
a81177f4bfe6 Add __osmesa_print__.cc for offscreen rendering with OpenGL
Andreas Weber <andy.weber.aw@gmail.com>
parents:
diff changeset
278 */