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annotate libinterp/dldfcn/__osmesa_print__.cc @ 19710:ce0a1bd0cd47

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fix omission from changeset 1170c849952b
author John W. Eaton <jwe@octave.org>
date Fri, 13 Feb 2015 18:06:46 -0500
parents 5cfb3ccbf24a
children bf25e9f7c22a
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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 #ifdef HAVE_OSMESA
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40 #include "GL/osmesa.h"
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41
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42 static void
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43 close_fcn (FILE *f)
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44 {
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45 gnulib::fclose (f);
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46 }
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47 #endif
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48
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49 DEFUN_DLD(__osmesa_print__, args, ,
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50 "-*- texinfo -*-\n\
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51 @deftypefn {Loadable Function} __osmesa_print__ (@var{h}, @var{file}, @var{term})\n\
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52 @deftypefnx {Loadable Function} {@var{img} =} __osmesa_print__ (@var{h})\n\
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53 Print figure @var{h} using OSMesa and gl2ps for vector formats.\n\
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54 \n\
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55 This is a private internal function.\n\
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56 The first method calls gl2ps with the appropriate @var{term} and writes\n\
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57 the output of gl2ps to @var{file}. If the first character of @var{file}\n\
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58 is @qcode{|}, then a process is started and the output of gl2ps is piped to it.\n\
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59 \n\
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60 Valid options for @var{term}, which can be concatenated in one string, are:\n\
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61 @table @asis\n\
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62 @item @qcode{eps}, @qcode{pdf}, @qcode{ps}, @qcode{svg}, @qcode{pgf}, @qcode{tex}\n\
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63 Select output format.\n\
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64 @item @qcode{is2D}\n\
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65 Use GL2PS_SIMPLE_SORT instead of GL2PS_BSP_SORT as Z-depth sorting algorithm.\n\
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66 @item @qcode{notext}\n\
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67 Don't render text.\n\
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68 @end table\n\
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69 \n\
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70 The second method doesn't use gl2ps and returns a RGB image in @var{img} instead.\n\
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71 \n\
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72 @end deftypefn")
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73 {
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74 octave_value_list retval;
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75
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76 #ifndef HAVE_OSMESA
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77 gripe_disabled_feature ("__osmesa_print__", "Offscreen rendering");
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78 #else
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79
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80 int nargin = args.length ();
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81
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82 if (! (nargin == 1 || nargin == 3))
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83 {
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84 print_usage ();
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85 return retval;
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86 }
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87
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88 if ((nargin == 3))
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89 {
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90 if(! (args(1).is_string () && args(2).is_string ()))
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91 {
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92 error ("__osmesa_print__: FILE and TERM has to be strings");
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93 return retval;
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94 }
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95
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96 #ifndef HAVE_GL2PS_H
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97 error ("__osmesa_print__: Octave has been compiled without gl2ps");
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98 return retval;
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99 #endif
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100 }
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101
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102 int h = args(0).double_value ();
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103 graphics_object fobj = gh_manager::get_object (h);
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104 if (! (fobj && fobj.isa ("figure")))
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105 {
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106 error ("__osmesa_print__: H has to be a valid figure handle");
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107 return retval;
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108 }
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109
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110 figure::properties& fp =
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111 dynamic_cast<figure::properties&> (fobj.get_properties ());
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112
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113 bool internal = true;
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114 Matrix bb = fp.get_boundingbox (internal);
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115
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116 int Width = bb(2);
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117 int Height = bb(3);
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118
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119 // Create an RGBA-mode context, specify Z=16, stencil=0, accum=0 sizes
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120 OSMesaContext ctx = OSMesaCreateContextExt (OSMESA_RGBA, 16, 0, 0, NULL);
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121 if (! ctx)
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122 {
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123 error ("__osmesa_print__: OSMesaCreateContext failed!\n");
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124 return retval;
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125 }
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parents:
diff changeset
126
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parents:
diff changeset
127 // Allocate the image buffer
19710
ce0a1bd0cd47 fix omission from changeset 1170c849952b
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parents: 19709
diff changeset
128 OCTAVE_LOCAL_BUFFER (GLubyte, buffer, 4 * Width * Height);
19703
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129
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130 // Bind the buffer to the context and make it current
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parents:
diff changeset
131 if (! OSMesaMakeCurrent (ctx, buffer, GL_UNSIGNED_BYTE, Width, Height))
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parents:
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132 {
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133 error ("__osmesa_print__: OSMesaMakeCurrent failed!\n");
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diff changeset
134 return retval;
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135 }
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parents:
diff changeset
136
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parents:
diff changeset
137 // Test for a bug in OSMesa with version < 9.0
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parents:
diff changeset
138 // Unfortunately the macros OSMESA_MAJOR_VERSION and OSMESA_MINOR_VERSION weren't
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parents:
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139 // updated between many releases and can't be used for detection therefore.
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parents:
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140 // (Version 8.0 until 9.1.4 all return MAJOR 6, MINOR 5)
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parents:
diff changeset
141 int z, s;
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parents:
diff changeset
142 glGetIntegerv (GL_DEPTH_BITS, &z);
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parents:
diff changeset
143 glGetIntegerv (GL_STENCIL_BITS, &s);
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diff changeset
144 if ((z != 16) || (s != 0))
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145 error ("__osmesa_print__: Depth and stencil doesn't match,"
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parents:
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146 " are you sure you are using OSMesa >= 9.0?");
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147
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148 // check if the figure is visible
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diff changeset
149 bool v = fp.is_visible ();
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diff changeset
150 if (v)
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151 fp.set_visible ("off");
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152
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Andreas Weber <andy.weber.aw@gmail.com>
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153 if (nargin == 3)
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parents:
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154 {
19707
59ad278cfb98 __opengl_print__.m: Use OSMesa for offscreen rendering (Bug #33180)
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parents: 19703
diff changeset
155 // use gl2ps
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parents: 19703
diff changeset
156 std::string file = args(1).string_value ();
59ad278cfb98 __opengl_print__.m: Use OSMesa for offscreen rendering (Bug #33180)
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parents: 19703
diff changeset
157 std::string term = args(2).string_value ();
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parents:
diff changeset
158
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59ad278cfb98 __opengl_print__.m: Use OSMesa for offscreen rendering (Bug #33180)
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parents: 19703
diff changeset
159 if (! error_state)
19703
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parents:
diff changeset
160 {
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59ad278cfb98 __opengl_print__.m: Use OSMesa for offscreen rendering (Bug #33180)
Andreas Weber <andy.weber.aw@gmail.com>
parents: 19703
diff changeset
161 size_t pos = file.find_first_not_of ("|");
59ad278cfb98 __opengl_print__.m: Use OSMesa for offscreen rendering (Bug #33180)
Andreas Weber <andy.weber.aw@gmail.com>
parents: 19703
diff changeset
162 if (pos > 0)
59ad278cfb98 __opengl_print__.m: Use OSMesa for offscreen rendering (Bug #33180)
Andreas Weber <andy.weber.aw@gmail.com>
parents: 19703
diff changeset
163 {
59ad278cfb98 __opengl_print__.m: Use OSMesa for offscreen rendering (Bug #33180)
Andreas Weber <andy.weber.aw@gmail.com>
parents: 19703
diff changeset
164 // create process and pipe gl2ps output to it
59ad278cfb98 __opengl_print__.m: Use OSMesa for offscreen rendering (Bug #33180)
Andreas Weber <andy.weber.aw@gmail.com>
parents: 19703
diff changeset
165 std::string cmd = file.substr (pos);
59ad278cfb98 __opengl_print__.m: Use OSMesa for offscreen rendering (Bug #33180)
Andreas Weber <andy.weber.aw@gmail.com>
parents: 19703
diff changeset
166 gl2ps_print (fobj, cmd, term);
59ad278cfb98 __opengl_print__.m: Use OSMesa for offscreen rendering (Bug #33180)
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parents: 19703
diff changeset
167 }
59ad278cfb98 __opengl_print__.m: Use OSMesa for offscreen rendering (Bug #33180)
Andreas Weber <andy.weber.aw@gmail.com>
parents: 19703
diff changeset
168 else
59ad278cfb98 __opengl_print__.m: Use OSMesa for offscreen rendering (Bug #33180)
Andreas Weber <andy.weber.aw@gmail.com>
parents: 19703
diff changeset
169 {
59ad278cfb98 __opengl_print__.m: Use OSMesa for offscreen rendering (Bug #33180)
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parents: 19703
diff changeset
170 // write gl2ps output directly to file
19709
5cfb3ccbf24a style fixes for resource management
John W. Eaton <jwe@octave.org>
parents: 19707
diff changeset
171 FILE *filep = fopen (file.c_str (), "w");
5cfb3ccbf24a style fixes for resource management
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parents: 19707
diff changeset
172
19707
59ad278cfb98 __opengl_print__.m: Use OSMesa for offscreen rendering (Bug #33180)
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parents: 19703
diff changeset
173 if (filep)
59ad278cfb98 __opengl_print__.m: Use OSMesa for offscreen rendering (Bug #33180)
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parents: 19703
diff changeset
174 {
19709
5cfb3ccbf24a style fixes for resource management
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parents: 19707
diff changeset
175 unwind_protect frame;
5cfb3ccbf24a style fixes for resource management
John W. Eaton <jwe@octave.org>
parents: 19707
diff changeset
176
5cfb3ccbf24a style fixes for resource management
John W. Eaton <jwe@octave.org>
parents: 19707
diff changeset
177 frame.add_fcn (close_fcn, filep);
5cfb3ccbf24a style fixes for resource management
John W. Eaton <jwe@octave.org>
parents: 19707
diff changeset
178
19707
59ad278cfb98 __opengl_print__.m: Use OSMesa for offscreen rendering (Bug #33180)
Andreas Weber <andy.weber.aw@gmail.com>
parents: 19703
diff changeset
179 glps_renderer rend (filep, term);
59ad278cfb98 __opengl_print__.m: Use OSMesa for offscreen rendering (Bug #33180)
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parents: 19703
diff changeset
180 rend.draw (fobj, "");
19703
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parents:
diff changeset
181
19707
59ad278cfb98 __opengl_print__.m: Use OSMesa for offscreen rendering (Bug #33180)
Andreas Weber <andy.weber.aw@gmail.com>
parents: 19703
diff changeset
182 // Make sure buffered commands are finished!!!
59ad278cfb98 __opengl_print__.m: Use OSMesa for offscreen rendering (Bug #33180)
Andreas Weber <andy.weber.aw@gmail.com>
parents: 19703
diff changeset
183 glFinish ();
59ad278cfb98 __opengl_print__.m: Use OSMesa for offscreen rendering (Bug #33180)
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parents: 19703
diff changeset
184 }
59ad278cfb98 __opengl_print__.m: Use OSMesa for offscreen rendering (Bug #33180)
Andreas Weber <andy.weber.aw@gmail.com>
parents: 19703
diff changeset
185 else
59ad278cfb98 __opengl_print__.m: Use OSMesa for offscreen rendering (Bug #33180)
Andreas Weber <andy.weber.aw@gmail.com>
parents: 19703
diff changeset
186 error ("__osmesa_print__: Couldn't create file \"%s\"", file.c_str ());
59ad278cfb98 __opengl_print__.m: Use OSMesa for offscreen rendering (Bug #33180)
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parents: 19703
diff changeset
187 }
19703
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parents:
diff changeset
188 }
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Andreas Weber <andy.weber.aw@gmail.com>
parents:
diff changeset
189 }
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parents:
diff changeset
190 else
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Andreas Weber <andy.weber.aw@gmail.com>
parents:
diff changeset
191 {
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parents:
diff changeset
192 // return RGB image
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parents:
diff changeset
193 opengl_renderer rend;
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parents:
diff changeset
194 rend.draw (fobj);
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parents:
diff changeset
195
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196 // Make sure buffered commands are finished!!!
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parents:
diff changeset
197 glFinish ();
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parents:
diff changeset
198
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parents:
diff changeset
199 dim_vector dv (4, Width, Height);
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parents:
diff changeset
200
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parents:
diff changeset
201 // FIXME: We expect that GLubyte is 1 Byte long.
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parents:
diff changeset
202 // Adapt code if this isn't always true
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parents:
diff changeset
203 assert (sizeof (GLubyte) == 1);
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parents:
diff changeset
204 uint8NDArray img (dv);
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Andreas Weber <andy.weber.aw@gmail.com>
parents:
diff changeset
205 unsigned char *p = reinterpret_cast<unsigned char*>(img.fortran_vec ());
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parents:
diff changeset
206 memcpy (p, buffer, (4 * Width * Height));
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Andreas Weber <andy.weber.aw@gmail.com>
parents:
diff changeset
207
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Andreas Weber <andy.weber.aw@gmail.com>
parents:
diff changeset
208 Array<octave_idx_type> perm (dim_vector (3, 1));
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Andreas Weber <andy.weber.aw@gmail.com>
parents:
diff changeset
209 perm(0) = 2;
a81177f4bfe6 Add __osmesa_print__.cc for offscreen rendering with OpenGL
Andreas Weber <andy.weber.aw@gmail.com>
parents:
diff changeset
210 perm(1) = 1;
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Andreas Weber <andy.weber.aw@gmail.com>
parents:
diff changeset
211 perm(2) = 0;
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Andreas Weber <andy.weber.aw@gmail.com>
parents:
diff changeset
212
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Andreas Weber <andy.weber.aw@gmail.com>
parents:
diff changeset
213 Array<idx_vector> idx (dim_vector (3, 1));
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Andreas Weber <andy.weber.aw@gmail.com>
parents:
diff changeset
214
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Andreas Weber <andy.weber.aw@gmail.com>
parents:
diff changeset
215 // Flip Y
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Andreas Weber <andy.weber.aw@gmail.com>
parents:
diff changeset
216 idx(0) = idx_vector::make_range (Height - 1, -1, Height);
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parents:
diff changeset
217 idx(1) = idx_vector::colon;
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Andreas Weber <andy.weber.aw@gmail.com>
parents:
diff changeset
218
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Andreas Weber <andy.weber.aw@gmail.com>
parents:
diff changeset
219 // Remove alpha channel
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parents:
diff changeset
220 idx(2) = idx_vector (0, 3);
a81177f4bfe6 Add __osmesa_print__.cc for offscreen rendering with OpenGL
Andreas Weber <andy.weber.aw@gmail.com>
parents:
diff changeset
221 retval = octave_value (img.permute (perm). index(idx));
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Andreas Weber <andy.weber.aw@gmail.com>
parents:
diff changeset
222 }
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Andreas Weber <andy.weber.aw@gmail.com>
parents:
diff changeset
223
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Andreas Weber <andy.weber.aw@gmail.com>
parents:
diff changeset
224 // restore visibility if necessary
a81177f4bfe6 Add __osmesa_print__.cc for offscreen rendering with OpenGL
Andreas Weber <andy.weber.aw@gmail.com>
parents:
diff changeset
225 if (v)
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Andreas Weber <andy.weber.aw@gmail.com>
parents:
diff changeset
226 fp.set_visible ("on");
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Andreas Weber <andy.weber.aw@gmail.com>
parents:
diff changeset
227
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Andreas Weber <andy.weber.aw@gmail.com>
parents:
diff changeset
228 OSMesaDestroyContext (ctx);
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Andreas Weber <andy.weber.aw@gmail.com>
parents:
diff changeset
229
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Andreas Weber <andy.weber.aw@gmail.com>
parents:
diff changeset
230 #endif
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Andreas Weber <andy.weber.aw@gmail.com>
parents:
diff changeset
231 return retval;
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Andreas Weber <andy.weber.aw@gmail.com>
parents:
diff changeset
232 }
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Andreas Weber <andy.weber.aw@gmail.com>
parents:
diff changeset
233
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Andreas Weber <andy.weber.aw@gmail.com>
parents:
diff changeset
234 /*
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Andreas Weber <andy.weber.aw@gmail.com>
parents:
diff changeset
235 %!testif HAVE_OSMESA
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parents:
diff changeset
236 %! h = figure ("visible", "off");
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parents:
diff changeset
237 %! fn = tempname ();
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Andreas Weber <andy.weber.aw@gmail.com>
parents:
diff changeset
238 %! sombrero ();
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Andreas Weber <andy.weber.aw@gmail.com>
parents:
diff changeset
239 %! __osmesa_print__ (h, fn, "svg");
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Andreas Weber <andy.weber.aw@gmail.com>
parents:
diff changeset
240 %! assert (stat (fn).size, 2692270, -0.1);
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Andreas Weber <andy.weber.aw@gmail.com>
parents:
diff changeset
241 %! unlink (fn);
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Andreas Weber <andy.weber.aw@gmail.com>
parents:
diff changeset
242 %! img = __osmesa_print__ (h);
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Andreas Weber <andy.weber.aw@gmail.com>
parents:
diff changeset
243 %! assert (size (img), [get(h, "position")([4, 3]), 3])
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parents:
diff changeset
244 %! ## Use pixel sum per RGB channel as fingerprint
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Andreas Weber <andy.weber.aw@gmail.com>
parents:
diff changeset
245 %! img_fp = squeeze (sum (sum (img), 2));
a81177f4bfe6 Add __osmesa_print__.cc for offscreen rendering with OpenGL
Andreas Weber <andy.weber.aw@gmail.com>
parents:
diff changeset
246 %! assert (img_fp, [52942515; 54167797; 56158178], -0.05);
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Andreas Weber <andy.weber.aw@gmail.com>
parents:
diff changeset
247
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parents:
diff changeset
248 %!testif HAVE_OSMESA
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parents:
diff changeset
249 %! h = figure ("visible", "off");
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parents:
diff changeset
250 %! fn = tempname ();
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Andreas Weber <andy.weber.aw@gmail.com>
parents:
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251 %! plot (sin (0:0.1:2*pi));
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Andreas Weber <andy.weber.aw@gmail.com>
parents:
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252 %! __osmesa_print__ (h, fn, "svgis2d");
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Andreas Weber <andy.weber.aw@gmail.com>
parents:
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253 %! assert (stat (fn).size, 7438, -0.05);
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Andreas Weber <andy.weber.aw@gmail.com>
parents:
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254 %! unlink (fn);
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Andreas Weber <andy.weber.aw@gmail.com>
parents:
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255 %! img = __osmesa_print__ (h);
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Andreas Weber <andy.weber.aw@gmail.com>
parents:
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256 %! assert (size (img), [get(h, "position")([4, 3]), 3])
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Andreas Weber <andy.weber.aw@gmail.com>
parents:
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257 %! ## Use pixel sum per RGB channel as fingerprint
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Andreas Weber <andy.weber.aw@gmail.com>
parents:
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258 %! img_fp = squeeze (sum (sum (img), 2));
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Andreas Weber <andy.weber.aw@gmail.com>
parents:
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259 %! assert (img_fp, [59281711; 59281711; 59482179], -0.05);
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Andreas Weber <andy.weber.aw@gmail.com>
parents:
diff changeset
260 */