Mercurial > sdl-ios-xcode
annotate docs/man3/SDL_ConvertSurface.3 @ 872:e7be95d758e8
Date: Fri, 05 Mar 2004 16:08:01 +0000
From: Alan Swanson
Subject: Re: [SDL] Fatal signal when initiaize with USB joystick on 2.6.2 kern
On Fri, 2004-03-05 at 15:09, Sam Lantinga wrote:
> > Fred, how does the attached patch work for you? Do all your axes work?
>
> I think you meant the two lines to be reversed.
> I checked a more robust version of this into CVS. Fred, can you see if
> it works?
You've misread the code. :-/
For coef[0] and coef[1], it is (values[2]+values[1]) / 2 and then add
or subtract values[4] to the answer.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sat, 06 Mar 2004 02:58:06 +0000 |
| parents | e5bc29de3f0a |
| children | 546f7c1eb755 |
| rev | line source |
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1 .TH "SDL_ConvertSurface" "3" "Tue 11 Sep 2001, 23:01" "SDL" "SDL API Reference" |
| 0 | 2 .SH "NAME" |
| 3 SDL_ConvertSurface\- Converts a surface to the same format as another surface\&. | |
| 4 .SH "SYNOPSIS" | |
| 5 .PP | |
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6 \fB#include "SDL/SDL\&.h" |
| 0 | 7 .sp |
| 8 \fBSDL_Surface *\fBSDL_ConvertSurface\fP\fR(\fBSDL_Surface *src, SDL_PixelFormat *fmt, Uint32 flags\fR); | |
| 9 .SH "DESCRIPTION" | |
| 10 .PP | |
| 11 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\&. | |
| 12 .PP | |
| 13 The \fBflags\fR parameter is passed to \fI\fBSDL_CreateRGBSurface\fP\fR and has those semantics\&. | |
| 14 .PP | |
| 15 This function is used internally by \fI\fBSDL_DisplayFormat\fP\fR\&. | |
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16 .PP |
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17 This function can only be called after SDL_Init\&. |
| 0 | 18 .SH "RETURN VALUE" |
| 19 .PP | |
| 20 Returns either a pointer to the new surface, or \fBNULL\fP on error\&. | |
| 21 .SH "SEE ALSO" | |
| 22 .PP | |
| 23 \fI\fBSDL_CreateRGBSurface\fP\fR, \fI\fBSDL_DisplayFormat\fP\fR, \fI\fBSDL_PixelFormat\fR\fR, \fI\fBSDL_Surface\fR\fR | |
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24 ...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:01 |