Mercurial > sdl-ios-xcode
annotate docs/man3/SDL_Overlay.3 @ 1120:8e1fde455471
Patch by me to fix crash described below.
--ryan.
To: sdl@libsdl.org
From: Rainer Deyke <rainerd@eldwood.com>
Date: Tue, 16 Aug 2005 01:08:18 -0600
Subject: [SDL] Bug report: SDL_CreateRGBSurface with SDL_HWSURFACE crashes
If SDL is in full-screen mode with a hardware video surface on OS X,
SDL_CreateRGBSurface with SDL_HWSURFACE crashes. The crash occurs on
line 109 of SDL_Surface.c. This was tested on OS X 10.3.9 with both SDL
1.2.8 and the latest CVS. Here is a small C++ program that demonstrates
the problem:
#include "SDL.h"
#include <stdio.h>
namespace {
void wait_for_key()
{
SDL_Event e;
printf("%d\n", SDL_GetAppState());
while (SDL_WaitEvent(&e)) {
if (e.type == SDL_KEYDOWN || e.type == SDL_QUIT) return;
}
}
}
int main(int, char *[])
{
SDL_Init(SDL_INIT_VIDEO);
SDL_Surface *screen
= SDL_SetVideoMode(640, 480, 32, SDL_FULLSCREEN | SDL_HWSURFACE);
SDL_Surface *s = SDL_CreateRGBSurface(SDL_HWSURFACE, 640, 480, 32,
screen->format->Rmask, screen->format->Gmask,
screen->format->Bmask, screen->format->Amask);
wait_for_key();
if (s) SDL_FreeSurface(s);
SDL_Quit();
printf("Success!\n");
return 0;
}
author | Ryan C. Gordon <icculus@icculus.org> |
---|---|
date | Thu, 18 Aug 2005 06:46:32 +0000 |
parents | e5bc29de3f0a |
children | 546f7c1eb755 |
rev | line source |
---|---|
181
e5bc29de3f0a
Updated from the SDL Documentation Project
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
|
1 .TH "SDL_Overlay" "3" "Tue 11 Sep 2001, 23:01" "SDL" "SDL API Reference" |
0 | 2 .SH "NAME" |
3 SDL_Overlay\- YUV video overlay | |
4 .SH "STRUCTURE DEFINITION" | |
5 .PP | |
6 .nf | |
7 \f(CWtypedef struct{ | |
8 Uint32 format; | |
9 int w, h; | |
10 int planes; | |
11 Uint16 *pitches; | |
12 Uint8 **pixels; | |
13 Uint32 hw_overlay:1; | |
14 } SDL_Overlay;\fR | |
15 .fi | |
16 .PP | |
17 .SH "STRUCTURE DATA" | |
18 .TP 20 | |
19 \fBformat\fR | |
20 Overlay format (see below) | |
21 .TP 20 | |
22 \fBw, h\fR | |
23 Width and height of overlay | |
24 .TP 20 | |
25 \fBplanes\fR | |
26 Number of planes in the overlay\&. Usually either 1 or 3 | |
27 .TP 20 | |
28 \fBpitches\fR | |
29 An array of pitches, one for each plane\&. Pitch is the length of a row in bytes\&. | |
30 .TP 20 | |
31 \fBpixels\fR | |
32 An array of pointers to teh data of each plane\&. The overlay should be locked before these pointers are used\&. | |
33 .TP 20 | |
34 \fBhw_overlay\fR | |
35 This will be set to 1 if the overlay is hardware accelerated\&. | |
36 .SH "DESCRIPTION" | |
37 .PP | |
38 A \fBSDL_Overlay\fR is similar to a \fI\fBSDL_Surface\fR\fR except it stores a YUV overlay\&. All the fields are read only, except for \fBpixels\fR which should be \fIlocked\fR before use\&. The \fBformat\fR field stores the format of the overlay which is one of the following: | |
39 .PP | |
40 .nf | |
41 \f(CW#define SDL_YV12_OVERLAY 0x32315659 /* Planar mode: Y + V + U */ | |
42 #define SDL_IYUV_OVERLAY 0x56555949 /* Planar mode: Y + U + V */ | |
43 #define SDL_YUY2_OVERLAY 0x32595559 /* Packed mode: Y0+U0+Y1+V0 */ | |
44 #define SDL_UYVY_OVERLAY 0x59565955 /* Packed mode: U0+Y0+V0+Y1 */ | |
45 #define SDL_YVYU_OVERLAY 0x55595659 /* Packed mode: Y0+V0+Y1+U0 */\fR | |
46 .fi | |
47 .PP | |
48 More information on YUV formats can be found at \fIhttp://www\&.webartz\&.com/fourcc/indexyuv\&.htm (link to URL http://www.webartz.com/fourcc/indexyuv.htm) \fR\&. | |
49 .SH "SEE ALSO" | |
50 .PP | |
51 \fI\fBSDL_CreateYUVOverlay\fP\fR, \fI\fBSDL_LockYUVOverlay\fP\fR, \fI\fBSDL_UnlockYUVOverlay\fP\fR, \fI\fBSDL_FreeYUVOverlay\fP\fR | |
181
e5bc29de3f0a
Updated from the SDL Documentation Project
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
|
52 ...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:01 |