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<HTML><BODY><PRE>     <STRONG>NAME</STRONG>	  <STRONG>fglGetTexEnvfv,</STRONG> <STRONG>fglGetTexEnviv</STRONG> - return texture environment	  parameters     <STRONG>FORTRAN</STRONG> <STRONG>SPECIFICATION</STRONG>	  SUBROUTINE <STRONG>fglGetTexEnvfv</STRONG>( INTEGER*4 <EM>target</EM>,				     INTEGER*4 <EM>pname</EM>,				     CHARACTER*8 <EM>params</EM>	)	  SUBROUTINE <STRONG>fglGetTexEnviv</STRONG>( INTEGER*4 <EM>target</EM>,				     INTEGER*4 <EM>pname</EM>,				     CHARACTER*8 <EM>params</EM>	)     <STRONG>PARAMETERS</STRONG>	  <EM>target</EM>  Specifies a texture environment.  Must be		  <STRONG>GL_TEXTURE_ENV</STRONG>.	  <EM>pname</EM>	  Specifies the	symbolic name of a texture environment		  parameter.  Accepted values are <STRONG>GL_TEXTURE_ENV_MODE</STRONG>		  and <STRONG>GL_TEXTURE_ENV_COLOR</STRONG>.	  <EM>params</EM>  Returns the requested	data.     <STRONG>DESCRIPTION</STRONG>	  <STRONG>fglGetTexEnv</STRONG> returns in <EM>params</EM> selected values of a texture	  environment that was specified with <STRONG>fglTexEnv</STRONG>.  <EM>target</EM>	  specifies a texture environment.  Currently, only one	  texture environment is defined and supported:	  <STRONG>GL_TEXTURE_ENV</STRONG>.	  <EM>pname</EM>	names a	specific texture environment parameter,	as	  follows:	  <STRONG>GL_TEXTURE_ENV_MODE</STRONG>		    <EM>params</EM> returns the single-valued texture		    environment	mode, a	symbolic constant. The initial		    value is <STRONG>GL_MODULATE</STRONG>.	  <STRONG>GL_TEXTURE_ENV_COLOR</STRONG>		    <EM>params</EM> returns four	integer	or floating-point		    values that	are the	texture	environment color.		    Integer values, when requested, are	linearly		    mapped from	the internal floating-point		    representation such	that 1.0 maps to the most		    positive representable integer, and	-1.0 maps to		    the	most negative representable integer. The		    initial value is (0, 0, 0, 0).     <STRONG>NOTES</STRONG>	  If an	error is generated, no change is made to the contents	  of <EM>params</EM>.     <STRONG>ERRORS</STRONG>	  <STRONG>GL_INVALID_ENUM</STRONG> is generated if <EM>target</EM> or <EM>pname</EM> is not an	  accepted value.	  <STRONG>GL_INVALID_OPERATION</STRONG> is generated if <STRONG>fglGetTexEnv</STRONG> is	  executed between the execution of <STRONG>fglBegin</STRONG> and the	  corresponding	execution of <STRONG>fglEnd</STRONG>.     <STRONG>SEE</STRONG> <STRONG>ALSO</STRONG>	  <STRONG>fglTexEnv</STRONG></PRE></BODY></HTML>

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