Mercurial > sdl-ios-xcode
comparison configure.in @ 1555:780fd5b61df1
Fixed bug #89
Date: Sun, 23 Oct 2005 16:39:03 +0200
From: "A. Schmid" <sahib@phreaker.net>
Subject: [SDL] no software surfaces with svgalib driver?
Hi,
I noticed that the SDL (1.2.9) svgalib driver only makes use of linear
addressable (framebuffer) video modes. On older systems (like one of
mine), linear addressable modes are often not available.
Especially for cards with VESA VBE < 2.0 the svgalib vesa driver is
unusable, since VESA only supports framebuffering for VBE 2.0 and later.
The changes necessary to add support for software surfaces seem to be
relatively small. I only had to hack src/video/svga/SDL_svgavideo.c (see
attached patch). The code worked fine for me, but it is no more than a
proof of concept and should be reviewed (probably has a memory leak when
switching modes). It also uses the vgagl library (included in the
svgalib package) and needs to be linked against it.
-Alex
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sun, 19 Mar 2006 12:05:16 +0000 |
| parents | 31c2b8e4885e |
| children | 011b633fa0c9 |
comparison
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| 1554:0ca607a5d173 | 1555:780fd5b61df1 |
|---|---|
| 1062 dnl Find the SVGAlib includes and libraries | 1062 dnl Find the SVGAlib includes and libraries |
| 1063 CheckSVGA() | 1063 CheckSVGA() |
| 1064 { | 1064 { |
| 1065 AC_ARG_ENABLE(video-svga, | 1065 AC_ARG_ENABLE(video-svga, |
| 1066 AC_HELP_STRING([--enable-video-svga], [use SVGAlib video driver [default=no]]), | 1066 AC_HELP_STRING([--enable-video-svga], [use SVGAlib video driver [default=no]]), |
| 1067 , enable_video_svga=no) | 1067 , enable_video_svga=yes) |
| 1068 if test x$enable_video = xyes -a x$enable_video_svga = xyes; then | 1068 if test x$enable_video = xyes -a x$enable_video_svga = xyes; then |
| 1069 AC_MSG_CHECKING(for SVGAlib (1.4.0+) support) | 1069 AC_MSG_CHECKING(for SVGAlib (1.4.0+) support) |
| 1070 video_svga=no | 1070 video_svga=no |
| 1071 AC_TRY_COMPILE([ | 1071 AC_TRY_COMPILE([ |
| 1072 #include <vga.h> | 1072 #include <vga.h> |
| 1073 #include <vgamouse.h> | 1073 #include <vgamouse.h> |
| 1074 #include <vgakeyboard.h> | 1074 #include <vgakeyboard.h> |
| 1075 #include <vgagl.h> | |
| 1075 ],[ | 1076 ],[ |
| 1076 if ( SCANCODE_RIGHTWIN && SCANCODE_LEFTWIN ) { | 1077 if ( SCANCODE_RIGHTWIN && SCANCODE_LEFTWIN ) { |
| 1077 exit(0); | 1078 exit(0); |
| 1078 } | 1079 } |
| 1079 ],[ | 1080 ],[ |
| 1081 ]) | 1082 ]) |
| 1082 AC_MSG_RESULT($video_svga) | 1083 AC_MSG_RESULT($video_svga) |
| 1083 if test x$video_svga = xyes; then | 1084 if test x$video_svga = xyes; then |
| 1084 AC_DEFINE(SDL_VIDEO_DRIVER_SVGALIB) | 1085 AC_DEFINE(SDL_VIDEO_DRIVER_SVGALIB) |
| 1085 SOURCES="$SOURCES $srcdir/src/video/svga/*.c" | 1086 SOURCES="$SOURCES $srcdir/src/video/svga/*.c" |
| 1086 EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lvga" | 1087 EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lvga -lvgagl" |
| 1087 have_video=yes | 1088 have_video=yes |
| 1088 fi | 1089 fi |
| 1089 fi | 1090 fi |
| 1090 } | 1091 } |
| 1091 | 1092 |