examples/synchronized-shader-arb.lisp

   1 (require '#:asdf)
   2 (asdf:oos 'asdf:load-op '#:cl-glfw-opengl-version_1_1)
   3
   4 (declaim (optimize (debug 3)))
   5
   6 ;; This example uses the gl:synchronizing-program-arb mechanism to reload+recompile+relink shader files on-file-change
   7
   8 (glfw:do-window ("An ARB Synchronized Shader Example")
   9     ((gl:with-setup-projection
  10        (glu:perspective 45 4/3 0.1 50))
  11      (unless  (and (gl-ext:load-extension "ARB_shader_objects")
  12                    (gl-ext:load-extension "ARB_vertex_shader")
  13                    (gl-ext:load-extension "ARB_fragment_shader"))
  14        (error "I need ARB_vertex_shader and ARB_fragment_shader for this example. Sorry :(")))
  15   (gl:clear gl:+color-buffer-bit+)
  16   (gl:load-identity)
  17   (gl:translate-f 0 0 -5)
  18   (gl:rotate-d (* 10 (glfw:get-time)) 1 1 0)
  19   (gl:rotate-d (* 90 (glfw:get-time)) 0 0 1)
  20   (let ((program (gl:synchronizing-program-arb 'synchronized-shader
  21                    (list gl:+vertex-shader-arb+ (merge-pathnames "synchronized-shader.vert" *load-truename*))
  22                    (list gl:+fragment-shader-arb+ (merge-pathnames "synchronized-shader.frag" *load-truename*)))))
  23     (gl:with-use-program-arb program
  24       (gl:uniform-1f-arb (gl:get-uniform-location-arb program "time") (glfw:get-time))
  25       (gl:with-begin gl:+triangles+
  26         (gl:color-3f 1 0 0) (gl:vertex-3f  1  0 0)
  27         (gl:color-3f 0 1 0) (gl:vertex-3f -1  1 0)
  28         (gl:color-3f 0 0 1) (gl:vertex-3f -1 -1 0)))))