Cycling 74 » Topic: setting GLSL param: GL error: Invalid operation (bricosa slab-helpers) http://cycling74.com/forums/topic/setting-glsl-param-gl-error-invalid-operation-bricosa-slab-helpers/feed Tue, 18 Jun 2013 16:55:55 +0000 http://bbpress.org/?v=2.2.4 http://cycling74.com/forums/topic/setting-glsl-param-gl-error-invalid-operation-bricosa-slab-helpers/#post-56213 <![CDATA[setting GLSL param: GL error: Invalid operation (bricosa slab-helpers)]]> http://cycling74.com/forums/topic/setting-glsl-param-gl-error-invalid-operation-bricosa-slab-helpers/#post-56213 Wed, 13 Apr 2011 18:38:51 +0000 diesector Greetings Cycling74 community,

I’ve been an avid reader of this forum for some time. I am newly registered and excited about being more involved on the forum.

I am having an issue I need some help with when my GL context first initializes. I keep getting the following error:

setting GLSL param: GL error: Invalid operation.

Despite this message, video seems to run ok.
I understand it to be a problem with the jit.gl.slab shaders I am using to control brightness / contrast / saturation
but I am unclear about why the GLSL is receiving invalid parameters. Is there a better way to control bricosa in openGL?

– Pasted Max Patch, click to expand. –
]]> http://cycling74.com/forums/topic/setting-glsl-param-gl-error-invalid-operation-bricosa-slab-helpers/#post-201740 <![CDATA[Re: setting GLSL param: GL error: Invalid operation (bricosa slab-helpers)]]> http://cycling74.com/forums/topic/setting-glsl-param-gl-error-invalid-operation-bricosa-slab-helpers/#post-201740 Wed, 13 Apr 2011 19:21:16 +0000 Andrew Benson there is a very minor typo in the cc.brightness.ip.jxs shader. The default param value for “image” should have a dot after it, to make it floating point. So should be

GLSL is pretty particular about these things.

This can be altered in the text editor of your choice.
That should cure the error message. Regardless, the error is mostly harmless, and shouldn’t change the way you use the object.

]]> http://cycling74.com/forums/topic/setting-glsl-param-gl-error-invalid-operation-bricosa-slab-helpers/#post-201741 <![CDATA[Re: setting GLSL param: GL error: Invalid operation (bricosa slab-helpers)]]> http://cycling74.com/forums/topic/setting-glsl-param-gl-error-invalid-operation-bricosa-slab-helpers/#post-201741 Wed, 13 Apr 2011 19:26:53 +0000 diesector Max 5.1.8 (45300)

Mac OS X 10.6.6

sorry for not including that.

]]> http://cycling74.com/forums/topic/setting-glsl-param-gl-error-invalid-operation-bricosa-slab-helpers/#post-201742 <![CDATA[Re: setting GLSL param: GL error: Invalid operation (bricosa slab-helpers)]]> http://cycling74.com/forums/topic/setting-glsl-param-gl-error-invalid-operation-bricosa-slab-helpers/#post-201742 Wed, 13 Apr 2011 19:29:47 +0000 Andrew Benson after posting, I found the culprit. see edited post above.

]]> http://cycling74.com/forums/topic/setting-glsl-param-gl-error-invalid-operation-bricosa-slab-helpers/#post-201743 <![CDATA[Re: setting GLSL param: GL error: Invalid operation (bricosa slab-helpers)]]> http://cycling74.com/forums/topic/setting-glsl-param-gl-error-invalid-operation-bricosa-slab-helpers/#post-201743 Wed, 13 Apr 2011 19:34:42 +0000 diesector Andrew, many thanks as always! I would have been trying to figure this out for quite a while.

]]>