Success with glGetLightfv is a follows.

glGetLightfv=: ' glGetLightfv > n i i *f' & (15!:0)

glGetLight_jzopenglutil_=: 4 : 0
  r=. x#0.1             NB. needs floating point number 0.1
  glGetLightfv y,<r     NB. needs y,<r  instead of y;r
  r
)
   4 glGetLight_jzopenglutil_  GL_LIGHT0_jzopenglutil_;GL_POSITION_jzopenglutil_
0 0 1 0

        BUT, I am Still fighting with glIsEnabled which has
the following descriptors definition. No matter what
argument I supply to glIsEnabled_jzopenglutil_ I get an
empty appearing returned when I expect either 1 or 0 . Any
guidance here?

glIsEnabled=: ' glIsEnabled > c i' & (15!:0)

   ]x =: glIsEnabled_jzopenglutil_ GL_LIGHTING_jzopenglutil_

   x

   $x

   #x
1



On Sun, 1 Oct 2006, Brian Schott wrote:

+       I am now looking at Oleg's anim.ijs and see how he
+ has accomplished this with the following code.
+
+ glGetInteger_jzopenglutil_=: 4 : 0
+   r=. x#_1
+   glGetIntegerv y;r
+   r
+ )
+
+       I will experiment with it further.
+
+ (B=)
+
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