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;;; guile-2d
;;; Copyright (C) 2013 David Thompson <dthompson2@worcester.edu>
;;;
;;; Guile-2d is free software: you can redistribute it and/or modify it
;;; under the terms of the GNU Lesser General Public License as
;;; published by the Free Software Foundation, either version 3 of the
;;; License, or (at your option) any later version.
;;;
;;; Guile-2d is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
;;; Lesser General Public License for more details.
;;;
;;; You should have received a copy of the GNU Lesser General Public
;;; License along with this program. If not, see
;;; <http://www.gnu.org/licenses/>.
;;; Commentary:
;;
;; Custom wrappers over low level OpenGL commands that aren't part of
;; FIGL.
;;
;;; Code:
(define-module (2d wrappers gl)
#:use-module (figl runtime)
#:use-module ((figl gl low-level) #:renamer (symbol-prefix-proc '%))
#:export (pixel-format*))
;;;
;;; 3.8.1 Texture Image Specification
;;;
(re-export (%glTexImage3D . gl-texture-image-3d)
(%glTexImage2D . gl-texture-image-2d)
(%glTexImage1D . gl-texture-image-1d))
;;;
;;; 3.8.2 Alternate Texture Image Specification Commands
;;;
(re-export (%glCopyTexImage2D . gl-copy-texture-image-2d)
(%glCopyTexImage1D . gl-copy-texture-image-1d)
(%glCopyTexSubImage3D . gl-copy-texture-sub-image-3d)
(%glCopyTexSubImage2D . gl-copy-texture-sub-image-2d)
(%glCopyTexSubImage1D . gl-copy-texture-sub-image-1d)
(%glTexSubImage3D . gl-texture-sub-image-3d)
(%glTexSubImage2D . gl-texture-sub-image-2d)
(%glTexSubImage1D . gl-texture-sub-image-1d))
;;;
;;; 3.8.3 Compressed Texture Images
;;;
(re-export (%glCompressedTexImage1D . gl-compressed-texture-image-1d)
(%glCompressedTexImage2D . gl-compressed-texture-image-2d)
(%glCompressedTexImage3D . gl-compressed-texture-image-3d)
(%glCompressedTexSubImage1D . gl-compressed-texture-sub-image-1d)
(%glCompressedTexSubImage2D . gl-compressed-texture-sub-image-2d)
(%glCompressedTexSubImage3D . gl-compressed-texture-sub-image-3d))
;;;
;;; 3.8.4 Texture Parameters
;;;
(re-export (%glTexParameteri . gl-texture-parameter))
;;;
;;; 3.8.12 Texture Objects
;;;
;; TODO gl-are-textures-resident? gl-prioritze-textures
(define (gl-generate-textures n)
(let ((bv (make-u32vector n 0)))
(%glGenTextures n bv)
(u32vector->list bv)))
(define (gl-generate-texture)
(car (gl-generate-textures 1)))
(define (gl-delete-textures textures)
(let ((bv (list->u32vector textures)))
(%glDeleteTextures (u32vector-length bv) bv)))
;; emacs: (put 'with-gl-bind-texture 'scheme-indent-function 2)
(define-syntax-rule (with-gl-bind-texture target id body ...)
(begin
(%glBindTexture target id)
body
...
(%glBindTexture target 0)))
(export gl-generate-textures
gl-generate-texture
gl-delete-textures
with-gl-bind-texture)
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