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;;;; png.lisp
(in-package #:wheelwork)
(def:class png (asset texture))
(defmethod ensure-loaded ((png png))
(with-slots
(width height id wrap-s wrap-t min-filter mag-filter internal-format image-format)
png
(pngload:with-png-in-static-vector (data (asset-path png) :flip-y t)
(setf width (pngload:width data)
height (pngload:height data)
id (gl:gen-texture))
(gl:bind-texture :texture-2d id)
(gl:tex-parameter :texture-2d :texture-wrap-s wrap-s)
(gl:tex-parameter :texture-2d :texture-wrap-t wrap-t)
(gl:tex-parameter :texture-2d :texture-min-filter min-filter)
(gl:tex-parameter :texture-2d :texture-mag-filter mag-filter)
(gl:tex-image-2d :texture-2d
0
internal-format
width
height
0
image-format
:unsigned-byte
(pngload:data data))
(gl:bind-texture :texture-2d 0)
;; what does this do?
(when (texture-mipmap png)
(gl:generate-mipmap :texture-2d)))))
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