1 |
package CFPlus::OpenGL; |
2 |
|
3 |
use strict; |
4 |
|
5 |
use Carp (); |
6 |
use CFPlus; |
7 |
|
8 |
our %GL_EXT; |
9 |
our $GL_VERSION; |
10 |
|
11 |
our $GL_NPOT; |
12 |
|
13 |
our $DEBUG = 1; |
14 |
our %INIT_HOOK; |
15 |
our %SHUTDOWN_HOOK; |
16 |
|
17 |
sub import { |
18 |
my $caller = caller; |
19 |
|
20 |
no strict; |
21 |
|
22 |
my $symtab = *{"main::CFPlus::OpenGL::"}{HASH}; |
23 |
|
24 |
for (keys %$symtab) { |
25 |
*{"$caller\::$_"} = *$_ |
26 |
if /^(?:gl[A-Z_]|GL_)/; |
27 |
} |
28 |
} |
29 |
|
30 |
sub init { |
31 |
$GL_VERSION = gl_version * 1; |
32 |
%GL_EXT = map +($_ => 1), split /\s+/, gl_extensions; |
33 |
|
34 |
$GL_NPOT = $GL_EXT{GL_ARB_texture_non_power_of_two} || $GL_VERSION >= 2; |
35 |
$GL_NPOT = 0 if gl_vendor =~ /ATI Technologies/; # ATI doesn't get it right... |
36 |
|
37 |
glDisable GL_COLOR_MATERIAL; |
38 |
glShadeModel GL_FLAT; |
39 |
glDisable GL_DITHER; |
40 |
glDisable GL_DEPTH_TEST; |
41 |
glDepthMask 0; |
42 |
|
43 |
my $hint = $::FAST ? GL_FASTEST : GL_NICEST; |
44 |
glHint GL_PERSPECTIVE_CORRECTION_HINT, $hint; |
45 |
glHint GL_POINT_SMOOTH_HINT , $hint; |
46 |
glHint GL_LINE_SMOOTH_HINT , $hint; |
47 |
glHint GL_POLYGON_SMOOTH_HINT , $hint; |
48 |
glHint GL_GENERATE_MIPMAP_HINT , $hint; |
49 |
#glDrawBuffer GL_BACK; |
50 |
#glReadBuffer GL_BACK; |
51 |
|
52 |
$_->() for values %INIT_HOOK; |
53 |
} |
54 |
|
55 |
sub shutdown { |
56 |
$_->() for values %SHUTDOWN_HOOK; |
57 |
} |
58 |
|
59 |
sub gl_check { |
60 |
return unless $DEBUG; |
61 |
|
62 |
if (my $error = glGetError) { |
63 |
my ($format, @args) = @_; |
64 |
Carp::cluck sprintf "opengl error %x while $format", $error, @args; |
65 |
} |
66 |
} |
67 |
|
68 |
1; |
69 |
|