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QB64-PE/internal/help/_glClearColor.txt
SMcNeill 6e01fc8dce Altered string compare routines (<,<=,>,>=) so they don't give false results with CHR$(0).
Added new _STRCMP and _STRICMP commands for quick string comparisons.
Cleaned up QB64 to finish removing the QUI (quick user insert) code and folders.
Altered UCASE and LCASE routines to be faster in some situations for us.
2014-09-22 08:19:03 -04:00

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'''_glClearColor:''' specify clear values for the color buffers
{{PageSyntax}}
SUB _glClearColor (BYVAL red AS SINGLE, BYVAL green AS SINGLE, BYVAL blue AS SINGLE, BYVAL alpha AS SINGLE)
void '''_glClearColor'''(GLfloat {{Parameter|red}}, GLfloat {{Parameter|green}}, GLfloat {{Parameter|blue}}, GLfloat {{Parameter|alpha}});
; red, green, blue, alpha
: Specify the red, green, blue, and alpha values used when the color buffers are cleared. The initial values are all 0.
{{PageDescription}}
'''_glClearColor''' specifies the red, green, blue, and alpha values used by {{KW|_glClear}} to clear the color buffers.
{{PageNotes}}
The type of the {{Parameter|red}}, {{Parameter|green}}, {{Parameter|blue}}, and {{Parameter|alpha}} parameters was changed from GLclampf to GLfloat. This change is transparent to user code.
{{PageUseWith}}
{{KW|_glGet}} with argument {{KW|_GL_COLOR_CLEAR_VALUE}}
{{PageSeeAlso}}
{{KW|_GL}}
{{KW|_glClear}}
{{PageCopyright}}
Copyright 1991-2006 Silicon Graphics, Inc. This document is licensed under the SGI Free Software B License. For details, see [http://oss.sgi.com/projects/FreeB/ http://oss.sgi.com/projects/FreeB/].