Create gl module.

1 files changed, 96 insertions, 0 deletions

diff --git a/2d/gl.scm b/2d/gl.scm
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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 gl)
+  #:use-module (figl runtime)
+  #:use-module ((figl gl low-level) #:renamer (symbol-prefix-proc '%))
+  #:export (pixel-format*))
+
+;; Workaround broken figl pixel-fromat enumeration.
+(define-enumeration
+  pixel-format*
+  (color-index 6400)
+  (stencil-index 6401)
+  (depth-component 6402)
+  (red 6403)
+  (green 6404)
+  (blue 6405)
+  (alpha 6406)
+  (rgb 6407)
+  (rgba 6408)
+  (luminance 6409)
+  (luminance-alpha 6410)
+  (abgr-ext 32768)
+  (cmyk-ext 32780)
+  (cmyka-ext 32781)
+  (ycrcb-422-sgix 33211)
+  (ycrcb-444-sgix 33212))
+
+;;;
+;;; 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))
+
+;; 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 with-gl-bind-texture)