📄 fglblendcolorext.html
字号:
<HTML><BODY><PRE> <STRONG>NAME</STRONG> <STRONG>fglBlendColorEXT</STRONG> - set the blend color <STRONG>FORTRAN</STRONG> <STRONG>SPECIFICATION</STRONG> SUBROUTINE <STRONG>fglBlendColorEXT</STRONG>( REAL*4 <EM>red</EM>, REAL*4 <EM>green</EM>, REAL*4 <EM>blue</EM>, REAL*4 <EM>alpha</EM> ) <STRONG>PARAMETERS</STRONG> <STRONG>GL_BLEND_COLOR_EXT</STRONG> <EM>red</EM>, <EM>green</EM>, <EM>blue</EM>, <EM>alpha</EM> specify the components of <STRONG>DESCRIPTION</STRONG> The <STRONG>GL_BLEND_COLOR_EXT</STRONG> may be used to calculate the source and destination blending factors. See <STRONG>fglBlendFunc</STRONG> for a complete description of the blending operations. Initially the <STRONG>GL_BLEND_COLOR_EXT</STRONG> is set to (0,0,0,0). <STRONG>NOTES</STRONG> <STRONG>fglBlendColorEXT</STRONG> is part of the _extname(EXT_blend_color) extension, not part of the core GL command set. If _extstring(EXT_blend_color) is included in the string returned by <STRONG>fglGetString</STRONG>, when called with argument <STRONG>GL_EXTENSIONS</STRONG>, extension _extname(EXT_blend_color) is supported by the connection. <STRONG>ERRORS</STRONG> <STRONG>GL_INVALID_OPERATION</STRONG> is generated if <STRONG>fglBlendColorEXT</STRONG> is executed between the execution of <STRONG>fglBegin</STRONG> and the corresponding execution of <STRONG>fglEnd</STRONG>. <STRONG>ASSOCIATED</STRONG> <STRONG>GETS</STRONG> <STRONG>fglGet</STRONG> with an argument of <STRONG>GL_BLEND_COLOR_EXT</STRONG>. <STRONG>SEE</STRONG> <STRONG>ALSO</STRONG> <STRONG>fglBlendFunc</STRONG>, <STRONG>fglGetString</STRONG>.</PRE></BODY></HTML>⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -