1vga_fillblt(3) Svgalib User Manual vga_fillblt(3)
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6 vga_fillblt - file rectangular area in video memory with a single color
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9 #include <vga.h>
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11 void vga_fillblt(int destaddr, int w, int h, int pitch, int color);
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15 Fill a rectangular area in video memory with a single color color.
16 destaddr is an offset into video memory (up to 2M). The pitch is the
17 logical width of the screen. Height h is in Pixels, Width w is in
18 BYTES!
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20 This is an old style function to access the accelerator of an SVGA
21 card. Before calling it you should check for availability of the func‐
22 tion in the mode you use with vga_getmodeinfo(3).
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24 For new applications you might be better of trying to use vga_accel(3)
25 instead.
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27 The old vga_bitblt(3), vga_blitwait(3), vga_fillblt(3), vga_hlinelist‐
28 blt(3), and vga_imageblt(3) interface was originally designed for the
29 Cirrus chipsets. Then Mach32 added support too but has problems to
30 resemble the unintuitive Cirrus interface. Then these new ideas were
31 reinjected and vga_accel(3) was designed. Now Cirrus and Chips & Tech‐
32 nologies chipset give limited vga_accel(3) support but no longer this
33 old style support. Mach32 is left to use the unintuitive Cirrus inter‐
34 face. At some future point the functions might be added for Mach32 too
35 (which should be rather simple), so new applications should use the
36 newer and probably more efficient interface.
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38 It would be fatal if the accelerator would be used while the console is
39 switched away. You should use vga_lockvc(3) and vga_unlockvc(3) to
40 avoid this, although good implementations of the accelerator functions
41 (like Mach32) will already ensure that.
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43 The testaccel(6) demo utilizes the old style accelerator functions.
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47 svgalib(7), vgagl(7), libvga.config(5), testaccel(6), vga_accel(3),
48 vga_bitblt(3), vga_blitwait(3), vga_hlinelistblt(3), vga_imageblt(3),
49 vga_getmodeinfo(3), vga_lockvc(3), vga_unlockvc(3)
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53 This manual page was edited by Michael Weller <eowmob@exp-math.uni-
54 essen.de>. The exact source of the referenced function as well as of
55 the original documentation is unknown.
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57 It is very likely that both are at least to some extent are due to Harm
58 Hanemaayer <H.Hanemaayer@inter.nl.net>.
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60 Occasionally this might be wrong. I hereby asked to be excused by the
61 original author and will happily accept any additions or corrections to
62 this first version of the svgalib manual.
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66Svgalib (>= 1.2.11) 27 July 1997 vga_fillblt(3)