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b586eafd3b
LINE INPUT will now use the faster method if passed a file handle that has been opened FOR BINARY. As such, the _BLINEINPUT command has been removed. qb64.bas now takes advantage of this for reading from '$include files, at least in Include Manager 1. Some tweaking of internal/source/main.txt was required to get things into a sane state, so I'm holing off changing the compiler any further so the auto-builder can make sure everything's smoothed over. Note: Everything should still compile as normal; I'm just being overcautious.
43 lines
2 KiB
Plaintext
43 lines
2 KiB
Plaintext
'''_glColorMask, glColorMaski:''' enable and disable writing of frame buffer color components
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{{PageSyntax}}
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SUB _glColorMask (BYVAL red AS _UNSIGNED _BYTE, BYVAL green AS _UNSIGNED _BYTE, BYVAL blue AS _UNSIGNED _BYTE, BYVAL alpha AS _UNSIGNED _BYTE)
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void '''_glColorMask'''(GLboolean {{Parameter|red}}, GLboolean {{Parameter|green}}, GLboolean {{Parameter|blue}}, GLboolean {{Parameter|alpha}});
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void '''_glColorMaski'''(GLuint {{Parameter|buf}}, GLboolean {{Parameter|red}}, GLboolean {{Parameter|green}}, GLboolean {{Parameter|blue}}, GLboolean {{Parameter|alpha}});
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; buf
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: For '''_glColorMaski''', specifies the index of the draw buffer whose color mask to set.
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; red, green, blue, alpha
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: Specify whether red, green, blue, and alpha are to be written into the frame buffer. The initial values are all {{KW|_GL_TRUE}}, indicating that the color components are written.
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{{PageDescription}}
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'''_glColorMask''' and '''_glColorMaski''' specify whether the individual color components in the frame buffer can or cannot be written. '''_glColorMaski''' sets the mask for a specific draw buffer, whereas '''_glColorMask''' sets the mask for all draw buffers. If {{Parameter|red}} is {{KW|_GL_FALSE}}, for example, no change is made to the red component of any pixel in any of the color buffers, regardless of the drawing operation attempted.
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Changes to individual bits of components cannot be controlled. Rather, changes are either enabled or disabled for entire color components.
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{{PageErrors}}
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{{KW|_GL_INVALID_VALUE}} is generated if {{Parameter|buf}} is greater than {{KW|_GL_MAX_DRAW_BUFFERS}} minus 1.
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{{PageUseWith}}
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{{KW|_glGet}} with argument {{KW|_GL_COLOR_WRITEMASK}}
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{{PageSeeAlso}}
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{{KW|_GL}}
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{{KW|_glClear}}, {{KW|_glClearBuffer}}, {{KW|_glDepthMask}}, {{KW|_glStencilMask}}
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{{PageCopyright}}
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Copyright 1991-2006 Silicon Graphics, Inc. Copyright 2010-2011 Khronos Group. 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/]. |