Mercurial > sdl-ios-xcode
annotate docs/man3/SDL_GLattr.3 @ 4168:69bcba65c388 SDL-1.2
Fixed bug #526
Comment #1 From Simon Howard 2009-03-20 16:50:56
Hi,
I'm the author of Chocolate Doom, one of the other source ports that James
mentioned. This is a patch against the current SVN version of SDL 1.2 that
fixes the bug. It has been tested and hopefully should be obviously correct
from examining the changes. I'll give a brief explanation.
When the palette is set with SDL_SetPalette, the IDirectDrawPalette_SetEntries
DirectX function is invoked. However, when this happens, a WM_PALETTECHANGED
message is sent to the window.
A WM_PALETTECHANGED message can also be received if the palette is changed for
some other reason, like if the system palette is changed. Therefore, the
palette change handler (DX5_PaletteChanged) has code to deal with this case.
It distinguishes "expected" palette changes (set with SDL_SetPalette) from
"unexpected" palette changes using the colorchange_expected variable, which is
set before calling IDirectDrawPalette_SetEntries. However, the code to set
this variable is missing in the fullscreen code path. By setting this
variable, the palette change is handled properly and the freezes go away.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Mon, 13 Apr 2009 00:53:12 +0000 |
| parents | 4e3b250c950e |
| children | 1238da4a7112 |
| rev | line source |
|---|---|
|
181
e5bc29de3f0a
Updated from the SDL Documentation Project
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
|
1 .TH "SDL_GLattr" "3" "Tue 11 Sep 2001, 23:01" "SDL" "SDL API Reference" |
| 0 | 2 .SH "NAME" |
|
4107
4e3b250c950e
Erik Heckers fixed bug #493
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
3 SDL_GLattr \- SDL GL Attributes |
| 0 | 4 .SH "ATTRIBUTES" |
| 5 .TP 20 | |
| 6 \fBSDL_GL_RED_SIZE\fP | |
| 7 Size of the framebuffer red component, in bits | |
| 8 .TP 20 | |
| 9 \fBSDL_GL_GREEN_SIZE\fP | |
| 10 Size of the framebuffer green component, in bits | |
| 11 .TP 20 | |
| 12 \fBSDL_GL_BLUE_SIZE\fP | |
| 13 Size of the framebuffer blue component, in bits | |
| 14 .TP 20 | |
| 15 \fBSDL_GL_ALPHA_SIZE\fP | |
| 16 Size of the framebuffer alpha component, in bits | |
| 17 .TP 20 | |
| 18 \fBSDL_GL_DOUBLEBUFFER\fP | |
| 19 0 or 1, enable or disable double buffering | |
| 20 .TP 20 | |
| 21 \fBSDL_GL_BUFFER_SIZE\fP | |
| 22 Size of the framebuffer, in bits | |
| 23 .TP 20 | |
| 24 \fBSDL_GL_DEPTH_SIZE\fP | |
| 25 Size of the depth buffer, in bits | |
| 26 .TP 20 | |
| 27 \fBSDL_GL_STENCIL_SIZE\fP | |
| 28 Size of the stencil buffer, in bits | |
| 29 .TP 20 | |
| 30 \fBSDL_GL_ACCUM_RED_SIZE\fP | |
| 31 Size of the accumulation buffer red component, in bits | |
| 32 .TP 20 | |
| 33 \fBSDL_GL_ACCUM_GREEN_SIZE\fP | |
| 34 Size of the accumulation buffer green component, in bits | |
| 35 .TP 20 | |
| 36 \fBSDL_GL_ACCUM_BLUE_SIZE\fP | |
| 37 Size of the accumulation buffer blue component, in bits | |
| 38 .TP 20 | |
| 39 \fBSDL_GL_ACCUM_ALPHA_SIZE\fP | |
| 40 Size of the accumulation buffer alpha component, in bits | |
| 41 .SH "DESCRIPTION" | |
| 42 .PP | |
| 43 While you can set most OpenGL attributes normally, the attributes list above must be known \fIbefore\fP SDL sets the video mode\&. These attributes a set and read with \fI\fBSDL_GL_SetAttribute\fP\fR and \fI\fBSDL_GL_GetAttribute\fP\fR\&. | |
| 44 .SH "SEE ALSO" | |
| 45 .PP | |
| 46 \fI\fBSDL_GL_SetAttribute\fP\fR, \fI\fBSDL_GL_GetAttribute\fP\fR | |
|
181
e5bc29de3f0a
Updated from the SDL Documentation Project
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
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47 ...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:01 |