glLightEnviSGIX man page on IRIX

glLightEnviSGIX man page on IRIX

Man page or keyword search:
man Server 31559 pages
apropos Keyword Search (all sections)
Output format



glLightEnv(3G)		       OpenGL Reference			glLightEnv(3G)

NAME
     glLightEnviSGIX - specify fragment lighting environment

C SPECIFICATION
     void glLightEnviSGIX( GLenum pname,
			   GLint param )

PARAMETERS
     pname  Must be GL_LIGHT_ENV_MODE_SGIX

     param  Can be one of three values: GL_REPLACE, GL_MODULATE, or GL_ADD

DESCRIPTION
     GL_LIGHT_ENV_MODE_SGIX specifies how the color computed by fragment
     lighting calculations is combined with the post-texturing fragment color.

     GL_REPLACE		 The lighting color replaces the fragment color

     GL_MODULATE	 Each (R,G,B,A) component of the fragment color is
			 multiplied by the corresponding component of the
			 lighting color

     GL_ADD		 The lighting color is added to the fragment color

     Initially GL_LIGHT_ENV_MODE_SGIX is set to GL_REPLACE.

NOTES
     glLightEnv is part of the GL_SGIX_fragment_lighting extension. glLightEnv
     is present only if GL_SGIX_fragment_lighting is returned when glGetString
     is called with GL_EXTENSIONS as its argument.

ERRORS
     GL_INVALID_OPERATION is generated if glLightEnv is executed between the
     execution of glBegin and the corresponding execution of glEnd.
     GL_INVALID_ENUM is generated if pname is not GL_LIGHT_ENV_MODE_SGIX, or
     param is not one of GL_REPLACE, GL_MODULATE, or GL_ADD.

ASSOCIATED GETS
     glGet with an argument of GL_LIGHT_ENV_MODE_SGIX

MACHINE DEPENDENCIES
     The SGIX_fragment_lighting extension is supported only on Octane2 VPro
     systems.

SEE ALSO
     glGetString, glFragmentLight

									Page 1

[top]

List of man pages available for IRIX

Copyright (c) for man pages and the logo by the respective OS vendor.

For those who want to learn more, the polarhome community provides shell access and support.

[legal] [privacy] [GNU] [policy] [cookies] [netiquette] [sponsors] [FAQ]

Polarhome, production since 1999.
Member of Polarhome portal.
Based on Fawad Halim's script.
....................................................................

Vote for polarhome