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ca4cfd556f
The expression follows the function definition separated by a ~ character, and is a simple boolean expression built with operators && and || from the elementary expressions "core" "forward" or a GL version number like "3.2". Parentheses are not supported, && binds stronger than || and may be ommited, i.e. "3.2 core" is equivalent to "3.2 && core".
91 lines
2.3 KiB
Perl
Executable File
91 lines
2.3 KiB
Perl
Executable File
#!/usr/bin/perl
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##
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## Copyright (C) 2002-2008, Marcelo E. Magallon <mmagallo[]debian org>
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## Copyright (C) 2002-2008, Milan Ikits <milan ikits[]ieee org>
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##
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## This program is distributed under the terms and conditions of the GNU
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## General Public License Version 2 as published by the Free Software
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## Foundation or, at your option, any later version.
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use strict;
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use warnings;
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do 'bin/make.pl';
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#-------------------------------------------------------------------------------
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# function pointer definition
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sub make_pfn_def_init($%)
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{
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#my $name = prefixname($_[0]);
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my $condition = "";
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if ($_[1]{deleted}) {
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my $needop = 0;
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for my $tok (split(/\s+/, $_[1]{deleted})) {
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if ($tok eq "~") {
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# ignore
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} elsif ($tok eq '&&') {
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$condition .= ' && ';
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$needop = 0;
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} elsif ($tok eq '||') {
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$condition .= ') || (';
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$needop = 0;
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} else {
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if ($needop) {
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$condition .= ' && ';
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}
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if ($tok =~ /^\d/) {
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# GL Version
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$tok =~ s/[.]/_/g;
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$condition .= "GLEW_VERSION_${tok}";
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} elsif ($tok eq "core") {
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$condition .= "(context_profile & GL_CONTEXT_CORE_PROFILE_BIT)";
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} elsif ($tok eq "forward") {
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$condition .= "(context_flags & GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT)";
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}
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$needop = 1;
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}
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}
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$condition = "if( !(($condition)) ) ";
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}
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return " ${condition}r = ((" . $_[0] . " = (PFN" . (uc $_[0]) . "PROC)glewGetProcAddress((const GLubyte*)\"" . $_[0] . "\")) == NULL) || r;";
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}
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sub make_reuse_call($%)
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{
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return " r = _glewInit_" . $_[0] . "() || r;";
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}
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#-------------------------------------------------------------------------------
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my @extlist = ();
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my %extensions = ();
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our $type = shift;
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if (@ARGV)
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{
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@extlist = @ARGV;
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foreach my $ext (sort @extlist)
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{
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my ($extname, $exturl, $extstring, $reuse, $types, $tokens, $functions, $exacts) =
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parse_ext($ext);
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#make_separator($extname);
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my $extvar = $extname;
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my $extvardef = $extname;
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$extvar =~ s/GL(X*)_/GL$1EW_/;
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if (keys %$functions or keys @$reuse)
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{
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print "#ifdef $extname\n\n";
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print "static GLboolean _glewInit_$extname ()\n{\n GLboolean r = GL_FALSE;\n";
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output_reuse($reuse, \&make_reuse_call);
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output_decls($functions, \&make_pfn_def_init);
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print "\n return r;\n}\n\n";
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print "#endif /* $extname */\n\n";
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}
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}
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}
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