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Text File  |  2002-10-03  |  2.8 KB  |  67 lines
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  4. rrrreeeeaaaaddddccccoooommmmppppoooonnnneeeennnntttt((((3333GGGG))))                                            rrrreeeeaaaaddddccccoooommmmppppoooonnnneeeennnntttt((((3333GGGG))))
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  8. NNNNAAAAMMMMEEEE
  9.      rrrreeeeaaaaddddccccoooommmmppppoooonnnneeeennnntttt - sets the component source within the framebuffer source
  10.      for pixels that various routines read, useful primarily for monochrome
  11.      image processing.
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  13. CCCC SSSSPPPPEEEECCCCIIIIFFFFIIIICCCCAAAATTTTIIIIOOOONNNN
  14.      vvvvooooiiiidddd rrrreeeeaaaaddddccccoooommmmppppoooonnnneeeennnntttt((((lllloooonnnngggg mmmmooooddddeeee))))
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  16. PPPPAAAARRRRAAAAMMMMEEEETTTTEEEERRRRSSSS
  17.      _s_r_c    expects a symbolic constant that identifies the pixel component
  18.             that is to be used:
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  20.             RRRRCCCC____AAAABBBBGGGGRRRR Indicates that all 4 frame buffer components, ABGR should
  21.             be transferred.  This is the default.
  22.  
  23.             RRRRCCCC____AAAALLLLPPPPHHHHAAAA selects the alpha channel of the current framebuffer
  24.             selected by readsource.
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  26.             RRRRCCCC____BBBBLLLLUUUUEEEE selects the blue channel of the current framebuffer
  27.             selected by readsource.
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  29.             RRRRCCCC____GGGGRRRREEEEEEEENNNN selects the green channel of the current framebuffer
  30.             selected by readsource.
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  32.             RRRRCCCC____RRRREEEEDDDD selects the red channel of the current framebuffer selected
  33.             by readsource.
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  35. DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
  36.      rrrreeeeaaaaddddccccoooommmmppppoooonnnneeeennnntttt specifies the component source buffer from the pixel source
  37.      buffer that rrrreeeeccccttttccccooooppppyyyy, rrrreeeeaaaaddddppppiiiixxxxeeeellllssss, rrrreeeeaaaaddddRRRRGGGGBBBB, rrrreeeeccccttttrrrreeeeaaaadddd, llllrrrreeeeccccttttrrrreeeeaaaadddd, and
  38.      ffffbbbbssssuuuubbbbtttteeeexxxxllllooooaaaadddd use.
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  40. SSSSEEEEEEEE AAAALLLLSSSSOOOO
  41.      lrectread, readpixels, readRGB, rectcopy, fbsubtexload
  42.  
  43. NNNNOOOOTTTTEEEESSSS
  44.      This subroutine is available only in immediate mode and only on
  45.      RealityEngine systems running 5.0.1 or later.
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  63.                                                                         PPPPaaaaggggeeee 1111
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