examples/synchronized-shader.lisp

   1 (require '#:asdf)
   2 (asdf:oos 'asdf:load-op '#:cl-glfw)
   3 (asdf:oos 'asdf:load-op '#:cl-glfw-opengl)
   4 (asdf:oos 'asdf:load-op '#:cl-glfw-glu)
   5 (asdf:oos 'asdf:load-op '#:cl-glfw-opengl-version_2_0)
   6
   7 (declaim (optimize (debug 3)))
   8
   9 ;; This example uses the gl:synchronizing-program mechanism to reload+recompile+relink shader files on-file-change
  10
  11 (glfw:do-window ("An OpenGL 2.0 Synchronized Shader Example")
  12     ((gl:with-setup-projection
  13        (glu:perspective 45 4/3 0.1 50)))
  14   (gl:clear gl:+color-buffer-bit+)
  15   (gl:load-identity)
  16   (gl:translate-f 0 0 -5)
  17   (gl:rotate-d (* 10 (glfw:get-time)) 1 1 0)
  18   (gl:rotate-d (* 90 (glfw:get-time)) 0 0 1)
  19   (let ((program (gl:synchronizing-program 'synchronized-shader
  20                    (list gl:+vertex-shader+ (merge-pathnames "synchronized-shader.vert" *load-truename*))
  21                    (list gl:+fragment-shader+ (merge-pathnames "synchronized-shader.frag" *load-truename*)))))
  22     (gl:with-use-program program
  23       (gl:uniform-1f (gl:get-uniform-location program "time") (glfw:get-time))
  24       (gl:with-begin gl:+triangles+
  25         (gl:color-3f 1 0 0) (gl:vertex-3f  1  0 0)
  26         (gl:color-3f 0 1 0) (gl:vertex-3f -1  1 0)
  27         (gl:color-3f 0 0 1) (gl:vertex-3f -1 -1 0)))))