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=head1 NAME |
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|
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CFClient - undocumented utility garbage for our crossfire client |
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|
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=head1 SYNOPSIS |
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|
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use CFClient; |
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|
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=head1 DESCRIPTION |
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|
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=over 4 |
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|
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=cut |
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|
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package CFClient; |
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|
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BEGIN { |
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$VERSION = '0.1'; |
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|
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use XSLoader; |
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XSLoader::load "CFClient", $VERSION; |
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} |
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|
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use SDL::OpenGL; |
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|
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our %GL_EXT; |
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our $GL_VERSION; |
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|
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our $GL_NPOT; |
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|
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sub gl_init { |
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$GL_VERSION = gl_version * 1; |
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%GL_EXT = map +($_ => 1), split /\s+/, gl_extensions; |
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|
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$GL_NPOT = $GL_EXT{GL_ARB_texture_non_power_of_two} || $GL_VERSION >= 2; |
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|
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glClearColor 0.45, 0.45, 0.45, 1; |
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|
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glEnable GL_TEXTURE_2D; |
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glEnable GL_COLOR_MATERIAL; |
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glShadeModel GL_FLAT; |
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glDisable GL_DEPTH_TEST; |
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glBlendFunc GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA; |
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|
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glHint GL_PERSPECTIVE_CORRECTION_HINT, GL_FASTEST; |
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|
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CFClient::Texture::restore_state (); |
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} |
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|
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sub find_rcfile($) { |
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my $path; |
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|
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for (@INC) { |
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$path = "$_/CFClient/resources/$_[0]"; |
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return $path if -r $path; |
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} |
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|
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die "FATAL: can't find required file $_[0]\n"; |
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} |
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|
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sub read_cfg { |
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my ($file) = @_; |
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|
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open CFG, $file |
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or return; |
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|
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my $CFG; |
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|
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local $/; |
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$CFG = eval <CFG>; |
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|
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$::CFG = $CFG; |
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|
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close CFG; |
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} |
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|
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sub write_cfg { |
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my ($file) = @_; |
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|
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open CFG, ">$file" |
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or return; |
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|
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{ |
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require Data::Dumper; |
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local $Data::Dumper::Purity = 1; |
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$::CFG->{VERSION} = $::VERSION; |
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print CFG Data::Dumper->Dump ([$::CFG], [qw/CFG/]); |
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} |
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|
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close CFG; |
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} |
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|
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package CFClient::Texture; |
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|
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use strict; |
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|
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use Scalar::Util; |
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|
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use SDL::OpenGL; |
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|
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my @textures; |
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|
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sub new { |
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my ($class, %data) = @_; |
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|
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my $self = bless { |
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internalformat => GL_RGBA, |
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format => GL_RGBA, |
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type => GL_UNSIGNED_BYTE, |
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%data, |
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}, $class; |
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|
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push @textures, $self; |
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Scalar::Util::weaken $textures[-1]; |
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|
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$self->upload; |
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|
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$self |
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} |
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|
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sub new_from_image { |
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my ($class, $image) = @_; |
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|
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$class->new (image => $image) |
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} |
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|
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sub new_from_file { |
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my ($class, $path) = @_; |
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|
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open my $fh, "<:raw", $path |
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or die "$path: $!"; |
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|
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local $/; |
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$class->new_from_image (<$fh>) |
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} |
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|
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#sub new_from_surface { |
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# my ($class, $surface) = @_; |
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# |
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# $surface->rgba; |
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# |
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# $class->new ( |
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# data => $surface->pixels, |
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# w => $surface->width, |
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# h => $surface->height, |
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# ) |
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#} |
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|
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sub new_from_layout { |
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my ($class, $layout) = @_; |
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|
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my ($w, $h, $data) = $layout->render; |
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|
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$class->new ( |
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w => $w, |
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h => $h, |
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data => $data, |
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internalformat => GL_ALPHA4, |
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format => GL_ALPHA, |
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type => GL_UNSIGNED_BYTE, |
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) |
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} |
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|
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sub new_from_opengl { |
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my ($class, $w, $h, $cb) = @_; |
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|
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$class->new (w => $w, h => $h, render_cb => $cb) |
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} |
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|
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sub topot { |
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(grep $_ >= $_[0], 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192, 16384, 32768)[0] |
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} |
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|
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sub upload { |
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my ($self) = @_; |
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|
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return unless $GL_VERSION; |
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|
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my $data; |
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|
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if (exists $self->{data}) { |
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$data = $self->{data}; |
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|
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} elsif (exists $self->{render_cb}) { |
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glViewport 0, 0, $self->{w}, $self->{h}; |
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glOrtho 0, $self->{w}, 0, $self->{h}, -10000, 10000; |
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glMatrixMode GL_PROJECTION; |
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glLoadIdentity; |
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glMatrixMode GL_MODELVIEW; |
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glLoadIdentity; |
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glClear GL_COLOR_BUFFER_BIT; |
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$self->{render_cb}->($self, $self->{w}, $self->{h}); |
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|
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} else { |
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($self->{w}, $self->{h}, $data, $self->{internalformat}, $self->{format}, $self->{type}) |
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= CFClient::load_image_inline $self->{image}; |
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} |
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|
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my ($tw, $th) = @$self{qw(w h)}; |
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|
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unless ($tw && $th) { |
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$tw = $th = 1; |
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$data = "\x00" x 64; |
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} |
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|
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unless ($GL_NPOT) { |
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# TODO: does not work for zero-sized textures |
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$tw = topot $tw; |
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$th = topot $th; |
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|
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if ($tw != $self->{w} || $th != $self->{h} && defined $data) { |
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my $bpp = (length $data) / ($self->{w} * $self->{h}); |
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$data = pack "(a" . ($tw * $bpp) . ")*", |
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unpack "(a" . ($self->{w} * $bpp) . ")*", $data; |
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$data .= ("\x00" x ($tw * $bpp)) x ($th - $self->{h}); |
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} |
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} |
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|
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$self->{s} = $self->{w} / $tw; |
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$self->{t} = $self->{h} / $th; |
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|
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$self->{name} ||= (glGenTextures 1)->[0]; |
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|
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glBindTexture GL_TEXTURE_2D, $self->{name}; |
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|
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glTexParameter GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, $::FAST ? GL_NEAREST : GL_LINEAR; |
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glTexParameter GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, $::FAST ? GL_NEAREST : GL_LINEAR; |
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glTexParameter GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP; |
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glTexParameter GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP; |
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|
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if (defined $data) { |
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glTexImage2D GL_TEXTURE_2D, 0, |
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$self->{internalformat}, |
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$tw, $th, # need to pad texture first |
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0, |
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$self->{format}, |
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$self->{type}, |
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$data; |
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glGetError and die; |
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} else { |
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glCopyTexImage2D GL_TEXTURE_2D, 0, |
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$self->{internalformat}, |
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0, 0, |
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$tw, $th, |
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0; |
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glGetError and die; |
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} |
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} |
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|
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sub DESTROY { |
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my ($self) = @_; |
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|
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return unless exists $self->{name}; |
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|
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glDeleteTextures delete $self->{name}; |
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} |
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|
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sub restore_state{ |
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$_->upload |
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for grep $_, @textures; |
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}; |
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|
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1; |
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|
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=back |
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|
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=head1 AUTHOR |
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|
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Marc Lehmann <schmorp@schmorp.de> |
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http://home.schmorp.de/ |
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|
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=cut |
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|
