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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 e5bc29de3f0a
children 546f7c1eb755
line wrap: on
line source

.TH "SDL_ConvertSurface" "3" "Tue 11 Sep 2001, 23:01" "SDL" "SDL API Reference" 
.SH "NAME"
SDL_ConvertSurface\- Converts a surface to the same format as another surface\&.
.SH "SYNOPSIS"
.PP
\fB#include "SDL/SDL\&.h"
.sp
\fBSDL_Surface *\fBSDL_ConvertSurface\fP\fR(\fBSDL_Surface *src, SDL_PixelFormat *fmt, Uint32 flags\fR);
.SH "DESCRIPTION"
.PP
Creates a new surface of the specified format, and then copies and maps the given surface to it\&. If this function fails, it returns \fBNULL\fP\&.
.PP
The \fBflags\fR parameter is passed to \fI\fBSDL_CreateRGBSurface\fP\fR and has those semantics\&.
.PP
This function is used internally by \fI\fBSDL_DisplayFormat\fP\fR\&.
.PP
This function can only be called after SDL_Init\&.
.SH "RETURN VALUE"
.PP
Returns either a pointer to the new surface, or \fBNULL\fP on error\&.
.SH "SEE ALSO"
.PP
\fI\fBSDL_CreateRGBSurface\fP\fR, \fI\fBSDL_DisplayFormat\fP\fR, \fI\fBSDL_PixelFormat\fR\fR, \fI\fBSDL_Surface\fR\fR
...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:01