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Port of SVGAlib; patched to only use the linux frame buffer

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Try the svgalib-demo programs: vgatest, speedtest etc. seem to work.
This commit is contained in:
David Kühling
2011-01-06 14:41:46 +01:00
parent 3fb4302e3a
commit ac7a991ae2
11 changed files with 897 additions and 0 deletions
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24
svgalib/patches/100-fbdev-setpage.patch Normal file
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@@ -0,0 +1,24 @@
Index: svgalib-1.4.3/src/fbdev.c
===================================================================
--- svgalib-1.4.3.orig/src/fbdev.c 2011-01-06 14:24:59.000000000 +0100
+++ svgalib-1.4.3/src/fbdev.c 2011-01-06 14:27:39.000000000 +0100
@@ -141,9 +141,17 @@
if (page != oldpage)
{
// munmap(BANKED_MEM_POINTER, __svgalib_banked_mem_size);
- mmap(BANKED_MEM_POINTER, __svgalib_banked_mem_size,
+ long size = __svgalib_banked_mem_size;
+ long offs = page * __svgalib_banked_mem_size;
+ if (size + offs > __svgalib_linear_mem_size)
+ size = __svgalib_linear_mem_size - offs;
+ if (size <= 0) {
+ fprintf (stderr, "invalid page %i requested", page);
+ }
+
+ mmap(BANKED_MEM_POINTER, size,
PROT_READ | PROT_WRITE, MAP_SHARED | MAP_FIXED,
- fbdev_fd, page * __svgalib_banked_mem_size);
+ fbdev_fd, offs);
oldpage = page;
}
}