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;;;
;;; gl.scm - Gauche GL binding
;;;
;;; Copyright (c) 2001-2014 Shiro Kawai <shiro@acm.org>
;;;
;;; Redistribution and use in source and binary forms, with or without
;;; modification, are permitted provided that the following conditions
;;; are met:
;;;
;;; 1. Redistributions of source code must retain the above copyright
;;; notice, this list of conditions and the following disclaimer.
;;;
;;; 2. Redistributions in binary form must reproduce the above copyright
;;; notice, this list of conditions and the following disclaimer in the
;;; documentation and/or other materials provided with the distribution.
;;;
;;; 3. Neither the name of the authors nor the names of its contributors
;;; may be used to endorse or promote products derived from this
;;; software without specific prior written permission.
;;;
;;; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
;;; "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
;;; LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
;;; A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
;;; OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
;;; SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
;;; TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
;;; PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
;;; LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
;;; NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
;;; SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
;;;
(define-module gl
(use srfi-1)
(use gauche.uvector)
(use gauche.version)
(use gauche.sequence)
(extend gl.math3d)
(export-all)
)
(select-module gl)
(dynamic-load "libgauche-gl")
;;-------------------------------------------------------------------
;; <gl-boolean-vector> stuff
;;
(define-method ref ((vec <gl-boolean-vector>) k . maybe-default)
(apply gl-boolean-vector-ref vec k maybe-default))
(define-method (setter ref) ((vec <gl-boolean-vector>) k value)
(gl-boolean-vector-set! vec k value))
(define-method call-with-iterator ((vec <gl-boolean-vector>) proc . args)
(let ([len (gl-boolean-vector-length vec)]
[i (get-keyword :start args 0)])
(proc (cut >= i len)
(^[] (begin0 (gl-boolean-vector-ref vec i) (inc! i))))))
(define-method call-with-builder ((vec <gl-boolean-vector-meta>) proc . args)
(if-let1 size (get-keyword :size args #f)
(let ([v (make-gl-boolean-vector size)]
[i 0])
(proc (^[item]
(when (< i size)
(gl-boolean-vector-set! v i item)
(inc! i)))
(^[] v)))
(let1 q (make-queue)
(proc (cut enqueue! q <>)
(cut list->gl-boolean-vector (dequeue-all! q))))))
(define-method size-of ((vec <gl-boolean-vector>))
(gl-boolean-vector-length vec))
(define-reader-ctor 'gl-boolean-vector gl-boolean-vector)
;;-------------------------------------------------------------------
;; Utilities
;;
(define-syntax gl-begin*
(syntax-rules ()
[(_ mode commands ...)
(begin
(gl-begin mode) commands ... (gl-end))]
))
(define-syntax gl-push-matrix*
(syntax-rules ()
[(_ commands ...)
(begin (gl-push-matrix) commands ... (gl-pop-matrix))]
))
;; Check GL version and extensions
(define-values
(gl-extension-available?
gl-version<? gl-version<=? gl-version>? gl-version>=? gl-version=?)
(let ([gl-vers #f]
[gl-exts #f])
(define (ensure-version)
(or gl-vers
(rlet1 v (and-let* ([verstr (gl-get-string GL_VERSION)]
[m (#/^\d+\.\d+\.\d+/ verstr)])
(m 0))
(set! gl-vers v))))
(define (ensure-extensions)
(or gl-exts
(rlet1 exts (and-let* ([extstr (gl-get-string GL_EXTENSIONS)])
(string-split extstr #[\s]))
(set! gl-exts exts))))
(define (gl-extension-available? . required)
(and-let* ([exts (ensure-extensions)])
(every (cut member <> exts)
(map x->string required))))
(define (gl-version<? v)
(and-let* ([vers (ensure-version)]) (version<? vers v)))
(define (gl-version<=? v)
(and-let* ([vers (ensure-version)]) (version<=? vers v)))
(define (gl-version>? v)
(and-let* ([vers (ensure-version)]) (version>? vers v)))
(define (gl-version>=? v)
(and-let* ([vers (ensure-version)]) (version>=? vers v)))
(define (gl-version=? v)
(and-let* ([vers (ensure-version)]) (version=? vers v)))
(values gl-extension-available?
gl-version<? gl-version<=?
gl-version>? gl-version>=?
gl-version=?)
))
|
