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0c1a32c5e4
Parts of later GL versions are often published as extension too, so these functions may be queried twice.
406 lines
13 KiB
Perl
Executable File
406 lines
13 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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sub compile_regex
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{
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my $regex = join('', @_);
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return qr/$regex/
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}
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my @sections = (
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"Name",
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"Name Strings?",
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"New Procedures and Functions",
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"New Tokens.*", # Optional (GL/WGL/GLX/...) suffix
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"Additions to Chapter.*",
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);
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my %typemap = (
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bitfield => "GLbitfield",
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boolean => "GLboolean",
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# fsck up in EXT_vertex_array
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Boolean => "GLboolean",
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byte => "GLbyte",
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clampd => "GLclampd",
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clampf => "GLclampf",
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double => "GLdouble",
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enum => "GLenum",
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# Intel fsck up
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Glenum => "GLenum",
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float => "GLfloat",
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half => "GLhalf",
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int => "GLint",
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short => "GLshort",
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sizei => "GLsizei",
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ubyte => "GLubyte",
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uint => "GLuint",
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ushort => "GLushort",
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DMbuffer => "void *",
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# Nvidia video output fsck up
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int64EXT => "GLint64EXT",
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uint64EXT=> "GLuint64EXT",
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# ARB VBO introduces these.
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sizeiptr => "GLsizeiptr",
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intptr => "GLintptr",
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sizeiptrARB => "GLsizeiptrARB",
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intptrARB => "GLintptrARB",
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# ARB shader objects introduces these, charARB is at least 8 bits,
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# handleARB is at least 32 bits
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charARB => "GLcharARB",
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handleARB => "GLhandleARB",
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char => "GLchar",
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# OpenGL 3.2 and GL_ARB_sync
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int64 => "GLint64",
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uint64 => "GLuint64",
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sync => "GLsync",
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# AMD_debug_output
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DEBUGPROCAMD => "GLDEBUGPROCAMD",
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# ARB_debug_output
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DEBUGPROCARB => "GLDEBUGPROCARB",
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# KHR_debug
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DEBUGPROC => "GLDEBUGPROC",
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vdpauSurfaceNV => "GLvdpauSurfaceNV",
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# GLX 1.3 defines new types which might not be available at compile time
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#GLXFBConfig => "void*",
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#GLXFBConfigID => "XID",
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#GLXContextID => "XID",
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#GLXWindow => "XID",
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#GLXPbuffer => "XID",
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# Weird stuff to some SGIX extension
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#GLXFBConfigSGIX => "void*",
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#GLXFBConfigIDSGIX => "XID",
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);
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my %voidtypemap = (
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void => "GLvoid",
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);
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my %taboo_tokens = (
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GL_ZERO => 1,
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);
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# list of function definitions to be ignored, unless they are being defined in
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# the given spec. This is an ugly hack arround the fact that people writing
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# spec files seem to shut down all brain activity while they are at this task.
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#
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# This will be moved to its own file eventually.
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#
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# (mem, 2003-03-19)
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my %fnc_ignore_list = (
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"BindProgramARB" => "ARB_vertex_program",
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"ColorSubTableEXT" => "EXT_color_subtable",
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"DeleteProgramsARB" => "ARB_vertex_program",
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"GenProgramsARB" => "ARB_vertex_program",
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"GetProgramEnvParameterdvARB" => "ARB_vertex_program",
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"GetProgramEnvParameterfvARB" => "ARB_vertex_program",
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"GetProgramLocalParameterdvARB" => "ARB_vertex_program",
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"GetProgramLocalParameterfvARB" => "ARB_vertex_program",
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"GetProgramStringARB" => "ARB_vertex_program",
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"GetProgramivARB" => "ARB_vertex_program",
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"IsProgramARB" => "ARB_vertex_program",
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"ProgramEnvParameter4dARB" => "ARB_vertex_program",
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"ProgramEnvParameter4dvARB" => "ARB_vertex_program",
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"ProgramEnvParameter4fARB" => "ARB_vertex_program",
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"ProgramEnvParameter4fvARB" => "ARB_vertex_program",
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"ProgramLocalParameter4dARB" => "ARB_vertex_program",
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"ProgramLocalParameter4dvARB" => "ARB_vertex_program",
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"ProgramLocalParameter4fARB" => "ARB_vertex_program",
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"ProgramLocalParameter4fvARB" => "ARB_vertex_program",
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"ProgramStringARB" => "ARB_vertex_program",
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"glXCreateContextAttribsARB" => "ARB_create_context_profile",
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"wglCreateContextAttribsARB" => "WGL_ARB_create_context_profile",
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);
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my %regex = (
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eofnc => qr/(?:\);?$|^$)/, # )$ | );$ | ^$
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extname => qr/^[A-Z][A-Za-z0-9_]+$/,
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none => qr/^\(none\)$/,
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function => qr/^(.+) ([a-z][a-z0-9_]*) \((.+)\)$/i,
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prefix => qr/^(?:[aw]?gl|glX)/, # gl | agl | wgl | glX
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tprefix => qr/^(?:[AW]?GL|GLX)_/, # GL_ | AGL_ | WGL_ | GLX_
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section => compile_regex('^(', join('|', @sections), ')$'), # sections in spec
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token => qr/^([A-Z0-9][A-Z0-9_x]*):?\s+((?:0x)?[0-9A-F]+)([^\?]*)$/, # define tokens
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types => compile_regex('\b(', join('|', keys %typemap), ')\b'), # var types
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voidtype => compile_regex('\b(', keys %voidtypemap, ')\b '), # void type
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);
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# reshapes the the function declaration from multiline to single line form
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sub normalize_prototype
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{
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local $_ = join(" ", @_);
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s/\s+/ /g; # multiple whitespace -> single space
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s/\<.*\>//g; # remove <comments> from direct state access extension
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s/\<.*$//g; # remove incomplete <comments> from direct state access extension
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s#/\*.*\*/##g; # remove /* ... */ comments
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s/\s*\(\s*/ \(/; # exactly one space before ( and none after
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s/\s*\)\s*/\)/; # no space before or after )
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s/\s*\*([a-zA-Z])/\* $1/; # "* identifier"
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s/\*wgl/\* wgl/; # "* wgl"
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s/\*glX/\* glX/; # "* glX"
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s/\.\.\./void/; # ... -> void
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s/;$//; # remove ; at the end of the line
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return $_;
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}
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# Ugly hack to work arround the fact that functions are declared in more
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# than one spec file.
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sub ignore_function($$)
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{
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return exists($fnc_ignore_list{$_[0]}) && $fnc_ignore_list{$_[0]} ne $_[1]
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}
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sub parse_spec($)
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{
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my $filename = shift;
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my $extname = "";
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my $vendortag = "";
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my @extnames = ();
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my %functions = ();
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my %tokens = ();
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my $section = "";
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my @fnc = ();
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my %proc = (
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"Name" => sub {
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if (/^([a-z0-9]+)_([a-z0-9_]+)/i)
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{
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$extname = "$1_$2";
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$vendortag = $1;
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}
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},
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"Name Strings" => sub {
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# Add extension name to extension list
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# Initially use $extname if (none) specified
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if (/$regex{none}/)
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{
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$_ = $extname;
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}
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if (/$regex{extname}/)
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{
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# prefix with "GL_" if prefix not present
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s/^/GL_/ unless /$regex{tprefix}/o;
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# Add extension name to extension list
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push @extnames, $_;
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}
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},
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"New Procedures and Functions" => sub {
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# if line matches end of function
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if (/$regex{eofnc}/)
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{
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# add line to function declaration
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push @fnc, $_;
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# if normalized version of function looks like a function
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if (normalize_prototype(@fnc) =~ /$regex{function}/)
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{
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# get return type, name, and arguments from regex
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my ($return, $name, $parms) = ($1, $2, $3);
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if (!ignore_function($name, $extname))
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{
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# prefix with "gl" if prefix not present
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$name =~ s/^/gl/ unless $name =~ /$regex{prefix}/;
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# is this a pure GL function?
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if ($name =~ /^gl/ && $name !~ /^glX/)
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{
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# apply typemaps
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$return =~ s/$regex{types}/$typemap{$1}/og;
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$return =~ s/GLvoid/void/og;
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$return =~ s/void\*/void */og;
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$parms =~ s/$regex{types}/$typemap{$1}/og;
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$parms =~ s/$regex{voidtype}/$voidtypemap{$1}/og;
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$parms =~ s/GLvoid/void/og;
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$parms =~ s/ void\* / void */og;
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}
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# add to functions hash
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$functions{$name} = {
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rtype => $return,
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parms => $parms,
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};
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}
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}
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# reset function declaration
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@fnc = ();
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} elsif ($_ ne "" and $_ ne "None") {
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# if not eof, add line to function declaration
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push @fnc, $_
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}
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},
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"New Tokens" => sub {
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if (/$regex{token}/)
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{
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my ($name, $value) = ($1, $2);
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# prefix with "GL_" if prefix not present
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$name =~ s/^/GL_/ unless $name =~ /$regex{tprefix}/;
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# Add (name, value) pair to tokens hash, unless it's taboo
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$tokens{$name} = $value unless exists $taboo_tokens{$name};
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}
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},
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);
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# Some people can't read, the template clearly says "Name String_s_"
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$proc{"Name String"} = $proc{"Name Strings"};
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# Open spec file
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open SPEC, "<$filename" or return;
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# For each line of SPEC
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while(<SPEC>)
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{
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# Delete trailing newline character
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chomp;
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# Remove trailing white spaces
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s/\s+$//;
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# If starts with a capital letter, it must be a new section
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if (/^[A-Z]/)
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{
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# Match section name with one of the predefined names
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$section = /$regex{section}/o ? $1 : "default";
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} else {
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# Line is internal to a section
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# Remove leading whitespace
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s/^\s+//;
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# Call appropriate section processing function if it exists
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&{$proc{$section}} if exists $proc{$section};
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}
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}
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close SPEC;
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return ($extname, \@extnames, \%tokens, \%functions);
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}
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#----------------------------------------------------------------------------------------
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my @speclist = ();
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my %extensions = ();
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my %fcn_in_core = ();
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my $ext_dir = shift;
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my $core_dir = shift;
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my $reg_http = "http://www.opengl.org/registry/specs/";
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# Take command line arguments or read list from file
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if (@ARGV)
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{
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@speclist = @ARGV;
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} else {
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local $/; #???
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@speclist = split "\n", (<>);
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}
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# Get functions moved to the GL core
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my %core_fnc = ();
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foreach my $spec (<$core_dir/GL_VERSION_*>)
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{
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my $vsn = $spec;
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$vsn =~ s/.*\/GL_VERSION_(\d+)_(\d+)/$1.$2/;
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open SPEC, "<$spec";
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while (<SPEC>)
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{
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if ($_ =~ qr/^(.+) ([a-z][a-z0-9_]*) \((.+)\)\s*(~.*)?$/i )
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{
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$core_fnc{$2} = $vsn;
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}
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}
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close SPEC;
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}
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foreach my $spec (sort @speclist)
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{
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my ($extname, $extnames, $tokens, $functions) = parse_spec($spec);
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foreach my $ext (@{$extnames})
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{
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my $info = "$ext_dir/" . $ext;
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open EXT, ">$info";
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print EXT $ext . "\n"; # Extension name
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my $specname = $spec;
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$specname =~ s/registry\/gl\/specs\///;
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print EXT $reg_http . $specname . "\n"; # Extension info URL
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print EXT $ext . "\n"; # Extension string
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print EXT "\n"; # Resuses nothing by default
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my $prefix = $ext;
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$prefix =~ s/^(.+?)(_.+)$/$1/;
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foreach my $token (sort {
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if (${$tokens}{$a} eq ${$tokens}{$b}) {
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$a cmp $b
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} else {
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if (${$tokens}{$a} =~ /_/) {
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if (${$tokens}{$b} =~ /_/) {
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$a cmp $b
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} else {
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-1
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}
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} else {
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if (${$tokens}{$b} =~ /_/) {
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1
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} else {
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if (hex ${$tokens}{$a} eq hex ${$tokens}{$b})
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{
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$a cmp $b
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} else {
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hex ${$tokens}{$a} <=> hex ${$tokens}{$b}
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}
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}
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}
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}
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} keys %{$tokens})
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{
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if ($token =~ /^$prefix\_.*/i)
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{
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print EXT "\t" . $token . " " . ${\%{$tokens}}{$token} . "\n";
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}
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}
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foreach my $function (sort keys %{$functions})
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{
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if ($function =~ /^$prefix.*/i)
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{
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my $deleter = "";
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if ($core_fnc{$function})
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{
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$deleter = " ~ " . $core_fnc{$function};
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}
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print EXT "\t" . ${$functions}{$function}{rtype} . " " . $function . " (" . ${$functions}{$function}{parms} . ")" . $deleter . "\n";
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}
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}
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close EXT;
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}
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}
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