Mercurial > octave
view libinterp/dldfcn/__osmesa_print__.cc @ 21547:ad0599a0acc6
doc: Wrap C++ docstrings to 79 characters + newline (80 total).
* besselj.cc, bitfcns.cc, cellfun.cc, data.cc, debug.cc, error.cc,
file-io.cc, graphics.cc, input.cc, lu.cc, matrix_type.cc, nproc.cc,
pr-output.cc, quadcc.cc, regexp.cc, schur.cc, sparse.cc, strfind.cc, strfns.cc,
syscalls.cc, urlwrite.cc, variables.cc, __osmesa_print__.cc, audiodevinfo.cc,
audioread.cc, ccolamd.cc, chol.cc, colamd.cc, convhulln.cc, qr.cc, symbfact.cc,
ov-java.cc, ov-struct.cc, ov-usr-fcn.cc, pt-arg-list.cc:
doc: Wrap C++ docstrings to 79 characters + newline (80 total).
author | Rik <rik@octave.org> |
---|---|
date | Sun, 27 Mar 2016 20:39:19 -0700 |
parents | e1c5aca1c798 |
children | ecce63c99c3f |
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/* Copyright (C) 2015 Andreas Weber <andy.weber.aw@gmail.com> This file is part of Octave. Octave is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. Octave is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with Octave; see the file COPYING. If not, see <http://www.gnu.org/licenses/>. This code is based on Brian Pauls' src/osdemos/osdemo.c from git://anongit.freedesktop.org/mesa/demos */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #if defined (HAVE_OSMESA_H) # include <osmesa.h> #elif defined (HAVE_GL_OSMESA_H) # include <GL/osmesa.h> #endif #include "oct-locbuf.h" #include "unwind-prot.h" #include "defun-dld.h" #include "errwarn.h" #include "gl-render.h" #include "gl2ps-print.h" #include "graphics.h" #include "oct-opengl.h" #if defined (HAVE_OSMESA) static void reset_visibility (figure::properties *fp) { fp->set_visible ("on"); } #endif DEFUN_DLD(__osmesa_print__, args, , "-*- texinfo -*-\n\ @deftypefn {} {} __osmesa_print__ (@var{h}, @var{file}, @var{term})\n\ @deftypefnx {} {@var{img} =} __osmesa_print__ (@var{h})\n\ Print figure @var{h} using OSMesa and gl2ps for vector formats.\n\ \n\ This is a private internal function.\n\ \n\ The first method calls gl2ps with the appropriate @var{term} and writes\n\ the output of gl2ps to @var{file}. If the first character of @var{file}\n\ is @qcode{|}, then a process is started and the output of gl2ps is piped\n\ to it.\n\ \n\ Valid options for @var{term}, which can be concatenated in one string, are:\n\ \n\ @table @asis\n\ @item @qcode{eps}, @qcode{pdf}, @qcode{ps}, @qcode{svg}, @qcode{pgf}, @qcode{tex}\n\ Select output format.\n\ \n\ @item @qcode{is2D}\n\ Use GL2PS_SIMPLE_SORT instead of GL2PS_BSP_SORT as Z-depth sorting\n\ algorithm.\n\ \n\ @item @qcode{notext}\n\ Don't render text.\n\ @end table\n\ \n\ The second method doesn't use gl2ps and returns a RGB image in @var{img}\n\ instead.\n\ \n\ @end deftypefn") { #if defined (HAVE_OSMESA) int nargin = args.length (); if (nargin != 1 && nargin != 3) print_usage (); if (nargin == 3) { if (! (args(1).is_string () && args(2).is_string ())) error ("__osmesa_print__: FILE and TERM must be strings"); } octave_value_list retval; int h = args(0).double_value (); graphics_object fobj = gh_manager::get_object (h); if (! (fobj && fobj.isa ("figure"))) error ("__osmesa_print__: H must be a valid figure handle"); figure::properties& fp = dynamic_cast<figure::properties&> (fobj.get_properties ()); bool internal = true; Matrix bb = fp.get_boundingbox (internal); GLsizei Width = static_cast<GLsizei> (bb(2)); GLsizei Height = static_cast<GLsizei> (bb(3)); // Create an RGBA-mode context, specify Z=16, stencil=0, accum=0 sizes OSMesaContext ctx = OSMesaCreateContextExt (OSMESA_RGBA, 16, 0, 0, NULL); if (! ctx) error ("__osmesa_print__: OSMesaCreateContext failed!\n"); // Allocate the image buffer OCTAVE_LOCAL_BUFFER (GLubyte, buffer, 4 * Width * Height); // Bind the buffer to the context and make it current if (! OSMesaMakeCurrent (ctx, buffer, GL_UNSIGNED_BYTE, Width, Height)) error ("__osmesa_print__: OSMesaMakeCurrent failed!\n"); // Test for a bug in OSMesa with version < 9.0 // // Unfortunately the macros OSMESA_MAJOR_VERSION and OSMESA_MINOR_VERSION // weren't updated between many releases and can't be used for detection. // (Version 8.0 until 9.1.4 all return MAJOR 6, MINOR 5) GLint z, s; glGetIntegerv (GL_DEPTH_BITS, &z); glGetIntegerv (GL_STENCIL_BITS, &s); if (z != 16 || s != 0) error ("__osmesa_print__: Depth and stencil doesn't match," " are you sure you are using OSMesa >= 9.0?"); unwind_protect outer_frame; bool v = fp.is_visible (); if (v) { outer_frame.add_fcn (reset_visibility, &fp); fp.set_visible ("off"); } if (nargin == 3) { std::string file = args(1).string_value (); std::string term = args(2).string_value (); gl2ps_print (fobj, file, term); } else { // return RGB image opengl_renderer rend; // Draw and finish () or there may primitives missing in the // output. rend.draw (fobj); rend.finish (); dim_vector dv (4, Width, Height); // FIXME: We expect that GLubyte is 1 Byte long. // Adapt code if this isn't always true assert (sizeof (GLubyte) == 1); uint8NDArray img (dv); unsigned char *p = reinterpret_cast<unsigned char*>(img.fortran_vec ()); memcpy (p, buffer, (4 * Width * Height)); Array<octave_idx_type> perm (dim_vector (3, 1)); perm(0) = 2; perm(1) = 1; perm(2) = 0; Array<idx_vector> idx (dim_vector (3, 1)); // Flip Y idx(0) = idx_vector::make_range (Height - 1, -1, Height); idx(1) = idx_vector::colon; // Remove alpha channel idx(2) = idx_vector (0, 3); retval = octave_value (img.permute (perm). index(idx)); } OSMesaDestroyContext (ctx); return retval; #else err_disabled_feature ("__osmesa_print__", "offscreen rendering with OSMesa"); #endif } /* ## FIXME: osmesa does not work correctly on Windows platforms. ## This is not critical, since this facility will mostly be used in ## the future for generating the images in Octave's own documentation. ## For the moment, disable these tests on PC's and Macs. %!testif HAVE_OPENGL, HAVE_OSMESA, HAVE_GL2PS_H %! if (isunix ()) %! h = figure ("visible", "off"); %! fn = tempname (); %! sombrero (); %! __osmesa_print__ (h, fn, "svg"); %! assert (stat (fn).size, 2692270, -0.1); %! unlink (fn); %! img = __osmesa_print__ (h); %! assert (size (img), [get(h, "position")([4, 3]), 3]) %! ## Use pixel sum per RGB channel as fingerprint %! img_fp = squeeze (sum (sum (img), 2)); %! assert (img_fp, [52942515; 54167797; 56158178], -0.05); %! endif %!testif HAVE_OPENGL, HAVE_OSMESA, HAVE_GL2PS_H %! if (isunix ()) %! h = figure ("visible", "off"); %! fn = tempname (); %! plot (sin (0:0.1:2*pi)); %! __osmesa_print__ (h, fn, "svgis2d"); %! assert (stat (fn).size, 7438, -0.1); %! unlink (fn); %! img = __osmesa_print__ (h); %! assert (size (img), [get(h, "position")([4, 3]), 3]) %! ## Use pixel sum per RGB channel as fingerprint %! img_fp = squeeze (sum (sum (img), 2)); %! assert (img_fp, [59281711; 59281711; 59482179], -0.05); %! endif */