Mercurial > sdl-ios-xcode
view src/video/Xext/extensions/xf86dga1.h @ 1554:0ca607a5d173
Fixed bug #84
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 12:04:40 +0000 |
parents | 585a7e1285ae |
children | 782fd950bd46 c121d94672cb |
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/* $XFree86: xc/include/extensions/xf86dga1.h,v 1.2 1999/04/17 07:05:41 dawes Exp $ */ /* Copyright (c) 1995 Jon Tombs Copyright (c) 1995 XFree86 Inc */ /************************************************************************ THIS IS THE OLD DGA API AND IS OBSOLETE. PLEASE DO NOT USE IT ANYMORE ************************************************************************/ #ifndef _XF86DGA1_H_ #define _XF86DGA1_H_ #include <X11/Xfuncproto.h> #include "SDL_name.h" #define X_XF86DGAQueryVersion 0 #define X_XF86DGAGetVideoLL 1 #define X_XF86DGADirectVideo 2 #define X_XF86DGAGetViewPortSize 3 #define X_XF86DGASetViewPort 4 #define X_XF86DGAGetVidPage 5 #define X_XF86DGASetVidPage 6 #define X_XF86DGAInstallColormap 7 #define X_XF86DGAQueryDirectVideo 8 #define X_XF86DGAViewPortChanged 9 #define XF86DGADirectPresent 0x0001 #define XF86DGADirectGraphics 0x0002 #define XF86DGADirectMouse 0x0004 #define XF86DGADirectKeyb 0x0008 #define XF86DGAHasColormap 0x0100 #define XF86DGADirectColormap 0x0200 #ifndef _XF86DGA_SERVER_ _XFUNCPROTOBEGIN Bool SDL_NAME(XF86DGAQueryVersion)( #if NeedFunctionPrototypes Display* /* dpy */, int* /* majorVersion */, int* /* minorVersion */ #endif ); Bool SDL_NAME(XF86DGAQueryExtension)( #if NeedFunctionPrototypes Display* /* dpy */, int* /* event_base */, int* /* error_base */ #endif ); Status SDL_NAME(XF86DGAGetVideoLL)( #if NeedFunctionPrototypes Display* /* dpy */, int /* screen */, int * /* base addr */, int * /* width */, int * /* bank_size */, int * /* ram_size */ #endif ); Status SDL_NAME(XF86DGAGetVideo)( #if NeedFunctionPrototypes Display* /* dpy */, int /* screen */, char ** /* base addr */, int * /* width */, int * /* bank_size */, int * /* ram_size */ #endif ); Status SDL_NAME(XF86DGADirectVideo)( #if NeedFunctionPrototypes Display* /* dpy */, int /* screen */, int /* enable */ #endif ); Status SDL_NAME(XF86DGADirectVideoLL)( #if NeedFunctionPrototypes Display* /* dpy */, int /* screen */, int /* enable */ #endif ); Status SDL_NAME(XF86DGAGetViewPortSize)( #if NeedFunctionPrototypes Display* /* dpy */, int /* screen */, int * /* width */, int * /* height */ #endif ); Status SDL_NAME(XF86DGASetViewPort)( #if NeedFunctionPrototypes Display* /* dpy */, int /* screen */, int x /* X */, int y /* Y */ #endif ); Status SDL_NAME(XF86DGAGetVidPage)( #if NeedFunctionPrototypes Display* /* dpy */, int /* screen */, int * /* vid page */ #endif ); Status SDL_NAME(XF86DGASetVidPage)( #if NeedFunctionPrototypes Display* /* dpy */, int /* screen */, int /* vid page */ #endif ); Status SDL_NAME(XF86DGAInstallColormap)( #if NeedFunctionPrototypes Display* /* dpy */, int /* screen */, Colormap /*Colormap */ #endif ); int SDL_NAME(XF86DGAForkApp)( #if NeedFunctionPrototypes int screen #endif ); Status SDL_NAME(XF86DGAQueryDirectVideo)( #if NeedFunctionPrototypes Display * /* dpy */, int /* screen */, int * /* flags */ #endif ); Bool SDL_NAME(XF86DGAViewPortChanged)( #if NeedFunctionPrototypes Display * /* dpy */, int /* screen */, int /* n */ #endif ); _XFUNCPROTOEND #endif /* _XF86DGA_SERVER_ */ #endif /* _XF86DGA1_H_ */