Thijs Koerselman

"spot_cutoff" values between 90 and 180 are triggering error messages. I'd

like to morph from 360 positional lighting to spotlights, but I can't.

ob3d_draw_end popmatrix: GL Error: Invalid value.

180 or 90 (and below) is fine with Jitter, but everything in between is

Is this not accepted by OpenGL standards or is it a possible Jitter bug?

"spot_cutoff" values between 90 and 180 are triggering error messages. I'd
like to morph from 360 positional lighting to spotlights, but I can't.

using jitter 1.5.2 I get:
ob3d_draw_end popmatrix: GL Error: Invalid value.

180 or 90 (and below) is fine with Jitter, but everything in between is
invalid.

opengl-spot_cutoff-90-invalid

Sounds like it might be a good idea to mention again that the standard

OpenGL stuff is available online for you at 

Sounds like it might be a good idea to mention again that the standard
OpenGL stuff is available online for you at http://www.opengl.org/ .  
It's
a great resource.


"To specify the angle between the axis of the cone an a ray along the 

edge of the cone, use the GL_SPOT_CUTOFF parameter....By default, the 

spotlight feature is disabled because the GL_SPOT_CUTOFF parameter is 

180.0. This value means that light is emitted in all directions (the 

angle at the cone's apex is 360 degrees,so it isn't a cone at all). The 

value for GL_SPOT_CUTOFF is restricted to the range [0.0 90.0] (unless 

"To specify the angle between the axis of the cone an a ray along the 
edge of the cone, use the GL_SPOT_CUTOFF parameter....By default, the 
spotlight feature is disabled because the GL_SPOT_CUTOFF parameter is 
180.0. This value means that light is emitted in all directions (the 
angle at the cone's apex is 360 degrees,so it isn't a cone at all).  The 
value for GL_SPOT_CUTOFF is restricted to the range [0.0 90.0] (unless 
it has the special value 180.)."

Ah, thanks. Sorry for the wasted time and bandwidth. I must have overlooked

Ah, thanks. Sorry for the wasted time and bandwidth. I must have overlooked
it.

opengl spot_cutoff > 90 invalid?