fglindex.html

来自「计算机图形学～想必是很多人需要的～在此共享一下」· HTML 代码 · 共 111 行

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<HTML><BODY><PRE>     <STRONG>NAME</STRONG>	  <STRONG>fglIndexd,</STRONG> <STRONG>fglIndexf,</STRONG>	<STRONG>fglIndexi,</STRONG> <STRONG>fglIndexs,</STRONG> <STRONG>fglIndexub,</STRONG>	  <STRONG>fglIndexdv,</STRONG> <STRONG>fglIndexfv,</STRONG> <STRONG>fglIndexiv,</STRONG> <STRONG>fglIndexsv,</STRONG> <STRONG>fglIndexubv</STRONG>	  - set	the current color index     <STRONG>FORTRAN</STRONG> <STRONG>SPECIFICATION</STRONG>	  SUBROUTINE <STRONG>fglIndexd</STRONG>(	REAL*8 <EM>c</EM> )	  SUBROUTINE <STRONG>fglIndexf</STRONG>(	REAL*4 <EM>c</EM> )	  SUBROUTINE <STRONG>fglIndexi</STRONG>(	INTEGER*4 <EM>c</EM> )	  SUBROUTINE <STRONG>fglIndexs</STRONG>(	INTEGER*2 <EM>c</EM> )	  SUBROUTINE <STRONG>fglIndexub</STRONG>( INTEGER*1 <EM>c</EM> )     <STRONG>PARAMETERS</STRONG>	  <EM>c</EM>  Specifies the new value for the current color index.     <STRONG>FORTRAN</STRONG> <STRONG>SPECIFICATION</STRONG>	  SUBROUTINE <STRONG>fglIndexdv</STRONG>( CHARACTER*8 <EM>c</EM> )	  SUBROUTINE <STRONG>fglIndexfv</STRONG>( CHARACTER*8 <EM>c</EM> )	  SUBROUTINE <STRONG>fglIndexiv</STRONG>( CHARACTER*8 <EM>c</EM> )	  SUBROUTINE <STRONG>fglIndexsv</STRONG>( CHARACTER*8 <EM>c</EM> )	  SUBROUTINE <STRONG>fglIndexubv</STRONG>( CHARACTER*256	<EM>c</EM> )     <STRONG>PARAMETERS</STRONG>	  <EM>c</EM>    Specifies a pointer to a	one-element array that	       contains	the new	value for the current color index.     <STRONG>DESCRIPTION</STRONG>	  <STRONG>fglIndex</STRONG> updates the current (single-valued) color index.	  It takes one argument, the new value for the current color	  index.	  The current index is stored as a floating-point value.	  Integer values are converted directly	to floating-point	  values, with no special mapping.  The	initial	value is 1.	  Index	values outside the representable range of the color	  index	buffer are not clamped.	 However, before an index is	  dithered (if enabled)	and written to the frame buffer, it is	  converted to fixed-point format.  Any	bits in	the integer	  portion of the resulting fixed-point value that do not	  correspond to	bits in	the frame buffer are masked out.     <STRONG>NOTES</STRONG>	  <STRONG>fglIndexub</STRONG> and <STRONG>fglIndexubv</STRONG> are available only	if the GL	  version is 1.1 or greater.	  The current index can	be updated at any time.	 In	  particular, <STRONG>fglIndex</STRONG> can be called between a call to	  <STRONG>fglBegin</STRONG> and the corresponding call to <STRONG>fglEnd</STRONG>.     <STRONG>ASSOCIATED</STRONG>	<STRONG>GETS</STRONG>	  <STRONG>fglGet</STRONG> with argument <STRONG>GL_CURRENT_INDEX</STRONG>     <STRONG>SEE</STRONG> <STRONG>ALSO</STRONG>	  <STRONG>fglColor</STRONG>, <STRONG>fglIndexPointer</STRONG></PRE></BODY></HTML>

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