]> gitweb.factorcode.org Git - factor.git/blob - basis/opengl/gl/extensions/extensions.factor
core/basis/extra: using STARTUP-HOOK: and SHUTDOWN-HOOK:
[factor.git] / basis / opengl / gl / extensions / extensions.factor
1 USING: alien alien.syntax alien.parser combinators
2 kernel parser sequences system words namespaces hashtables init
3 math arrays assocs continuations lexer fry locals vocabs.parser ;
4 IN: opengl.gl.extensions
5
6 ERROR: unknown-gl-platform ;
7 << {
8     { [ os windows? ] [ "opengl.gl.windows" ] }
9     { [ os macosx? ]  [ "opengl.gl.macosx" ] }
10     { [ os unix? ] [ "opengl.gl.gtk" ] }
11     [ unknown-gl-platform ]
12 } cond use-vocab >>
13
14 SYMBOL: +gl-function-counter+
15 SYMBOL: +gl-function-pointers+
16
17 : reset-gl-function-number-counter ( -- )
18     0 +gl-function-counter+ set-global ;
19 : reset-gl-function-pointers ( -- )
20     100 <hashtable> +gl-function-pointers+ set-global ;
21
22 STARTUP-HOOK: reset-gl-function-pointers
23
24 reset-gl-function-pointers
25 reset-gl-function-number-counter
26
27 : gl-function-counter ( -- n )
28     +gl-function-counter+ counter ;
29
30 : gl-function-pointer ( names n -- funptr )
31     gl-function-context 2array dup +gl-function-pointers+ get-global at
32     [ 2nip ] [
33         [
34             [ gl-function-address ] map [ ] find nip
35             dup [ "OpenGL function not available" throw ] unless
36             dup
37         ] dip
38         +gl-function-pointers+ get-global set-at
39     ] if* ;
40
41 : indirect-quot ( function-ptr-quot return types abi -- quot )
42     '[ @  _ _ _ alien-indirect ] ;
43
44 :: define-indirect ( abi return function-name function-ptr-quot types names -- )
45     function-name create-function
46     function-ptr-quot return types abi indirect-quot
47     names return function-effect
48     define-declared ;
49
50 : gl-function-calling-convention ( -- symbol )
51     os windows? [ stdcall ] [ cdecl ] if ;
52
53 SYNTAX: GL-FUNCTION:
54     gl-function-calling-convention
55     scan-function-name
56     "{" expect "}" parse-tokens over suffix
57     gl-function-counter '[ _ _ gl-function-pointer ]
58     scan-c-args define-indirect ;