diff options
Diffstat (limited to 'src/interactive')
| -rw-r--r-- | src/interactive/bitmap.lisp | 59 |
1 files changed, 35 insertions, 24 deletions
diff --git a/src/interactive/bitmap.lisp b/src/interactive/bitmap.lisp index cc4b4f7..3d38503 100644 --- a/src/interactive/bitmap.lisp +++ b/src/interactive/bitmap.lisp @@ -2,16 +2,36 @@ (in-package #:wheelwork) +(defvar *bitmap-shader-program* nil + "Cached for later cleanup.") +(defvar *bitmap-vao* nil) + +(defvar *bitmap-count* 0 + "Used by finalizers to determin if the shader should be destroyed.") + +(defun bitmap-finalizer () + "executed after a bitmap has been reclaimed by gc. decrements bitmap +count and destroys shader-program if necessary." + (decf *bitmap-count*) + (when (zerop *bitmap-count*) + (when *bitmap-vao* + (gl:delete-vertex-arrays (list *bitmap-vao*)) + (setf *bitmap-vao* nil)) + (when *bitmap-shader-program* + (gl:delete-program *bitmap-shader-program*) + (setf *bitmap-shader-program* nil)))) + (defclass/std bitmap (affine interactive) - ((texture :ri :std (error "A bitmap requires a texture.")) - (vao shader :with :r :static))) + ((texture :ri :std (error "A bitmap requires a texture.")))) (defmethod initialize-instance :after ((bitmap bitmap) &key) - (with-slots (vao shader base-width base-height texture) bitmap + (incf *bitmap-count*) + (trivial-garbage:finalize bitmap #'bitmap-finalizer) + (with-slots (base-width base-height texture) bitmap (setf base-height (texture-height texture) base-width (texture-width texture)) - (unless shader - (setf shader + (unless *bitmap-shader-program* + (setf *bitmap-shader-program* (create-shader '(:vertex ((vert :vec2)) @@ -27,12 +47,12 @@ (vari:discard) frag)))))) (gl:program-uniformi - shader - (gl:get-uniform-location shader "TEX") + *bitmap-shader-program* + (gl:get-uniform-location *bitmap-shader-program* "TEX") 0)) - (unless vao - (setf vao (gl:gen-vertex-array)) - (gl:bind-vertex-array vao) + (unless *bitmap-vao* + (setf *bitmap-vao* (gl:gen-vertex-array)) + (gl:bind-vertex-array *bitmap-vao*) (let ((vbo (gl:gen-buffer))) (with-gl-array (verts :float 0.0 1.0 @@ -49,24 +69,15 @@ (gl:bind-buffer :array-buffer 0) (gl:bind-vertex-array 0)))) -(defmethod cleanup ((bitmap bitmap)) - (with-slots (vao shader) bitmap - (when vao - (gl:delete-vertex-arrays (list vao))) - (when shader - (gl:delete-program shader)) - (setf vao nil - shader nil))) - (defmethod render ((bitmap bitmap)) - (with-slots (texture vao shader) bitmap + (with-slots (texture) bitmap (gl:active-texture 0) (gl:bind-texture :texture-2d (texture-id texture)) - (gl:use-program shader) + (gl:use-program *bitmap-shader-program*) (gl:program-uniform-matrix-4fv - shader - (gl:get-uniform-location shader "TRANSFORM") + *bitmap-shader-program* + (gl:get-uniform-location *bitmap-shader-program* "TRANSFORM") (projected-matrix bitmap)) - (gl:bind-vertex-array vao) + (gl:bind-vertex-array *bitmap-vao*) (gl:draw-arrays :triangles 0 6) (gl:bind-vertex-array 0))) |