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[gacela.git] / gacela.lisp

diff --git a/gacela.lisp b/gacela.lisp
index 140f0edbcdbd5dcccbb337261786f023e9a7c648..dcbddde6836162300ffa5a89af9c8512c9da1975 100644 (file)
--- a/gacela.lisp
+++ b/gacela.lisp
@@ -98,6 +98,14 @@
   (glHint GL_PERSPECTIVE_CORRECTION_HINT GL_NICEST)
   t)
 
+(defmacro progn-textures (&body code)
+  `(let (values)
+     (init-video-mode)
+     (glEnable GL_TEXTURE_2D)
+     (setq values (multiple-value-list (progn ,@code)))
+     (glDisable GL_TEXTURE_2D)
+     (apply #'values values)))
+
 (defun init-textures ()
   (init-video-mode)
   (glEnable GL_TEXTURE_2D))
@@ -118,6 +126,14 @@
     (glLoadIdentity)
     t))
 
+(let ((current-color '(1 1 1 1)))
+  (defun get-color ()
+    current-color)
+
+  (defun set-color (red green blue (&optional (alpha 1)))
+    (setq current-color color)
+    (glColor4f red green blue alpha)))
+
 (defun copy-surface (source)
   (cond ((surface-p source)
         (let ((new-surface