Mercurial > sdl-ios-xcode
view docs/html/sdlcreateyuvoverlay.html @ 4256:ba587a51f899 SDL-1.2
Vitaly Minko to slouken
Hi all,
I wrote a patch, which allows user to rotate the screen in case of fbcon driver.
The rotation angle is controlled by SDL_VIDEO_FBCON_ROTATION environment variable and possible values are:
not set - Not rotating, no shadow.
"NONE" - Not rotating, but still using shadow.
"CW" - Rotating screen clockwise.
"UD" - Rotating screen upside down.
"CCW" - Rotating screen counter clockwise.
The patch is based on wscons driver, written by Staffan Ulfberg.
I tested it on
Device: Sharp Zaurus SL-C1000
SDL version: 1.2.13
Kernel version: 2.6.24.4
Best regards,
Vitaly.
author | Sam Lantinga <slouken@libsdl.org> |
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date | Mon, 28 Sep 2009 06:23:22 +0000 |
parents | 355632dca928 |
children |
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<HTML ><HEAD ><TITLE >SDL_CreateYUVOverlay</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ "><LINK REL="HOME" TITLE="SDL Library Documentation" HREF="index.html"><LINK REL="UP" TITLE="Video" HREF="video.html"><LINK REL="PREVIOUS" TITLE="SDL_GL_SwapBuffers" HREF="sdlglswapbuffers.html"><LINK REL="NEXT" TITLE="SDL_LockYUVOverlay" HREF="sdllockyuvoverlay.html"></HEAD ><BODY CLASS="REFENTRY" BGCOLOR="#FFF8DC" TEXT="#000000" LINK="#0000ee" VLINK="#551a8b" ALINK="#ff0000" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >SDL Library Documentation</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="sdlglswapbuffers.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="sdllockyuvoverlay.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="SDLCREATEYUVOVERLAY" ></A >SDL_CreateYUVOverlay</H1 ><DIV CLASS="REFNAMEDIV" ><A NAME="AEN2808" ></A ><H2 >Name</H2 >SDL_CreateYUVOverlay -- Create a YUV video overlay</DIV ><DIV CLASS="REFSYNOPSISDIV" ><A NAME="AEN2811" ></A ><H2 >Synopsis</H2 ><DIV CLASS="FUNCSYNOPSIS" ><A NAME="AEN2812" ></A ><P ></P ><PRE CLASS="FUNCSYNOPSISINFO" >#include "SDL.h"</PRE ><P ><CODE ><CODE CLASS="FUNCDEF" >SDL_Overlay *<B CLASS="FSFUNC" >SDL_CreateYUVOverlay</B ></CODE >(int width, int height, Uint32 format, SDL_Surface *display);</CODE ></P ><P ></P ></DIV ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN2818" ></A ><H2 >Description</H2 ><P ><TT CLASS="FUNCTION" >SDL_CreateYUVOverlay</TT > creates a YUV overlay of the specified <TT CLASS="PARAMETER" ><I >width</I ></TT >, <TT CLASS="PARAMETER" ><I >height</I ></TT > and <TT CLASS="PARAMETER" ><I >format</I ></TT > (see <A HREF="sdloverlay.html" ><SPAN CLASS="STRUCTNAME" >SDL_Overlay</SPAN ></A > for a list of available formats), for the provided <TT CLASS="PARAMETER" ><I >display</I ></TT >. A <A HREF="sdloverlay.html" ><SPAN CLASS="STRUCTNAME" >SDL_Overlay</SPAN ></A > structure is returned.</P ><P >The term 'overlay' is a misnomer since, unless the overlay is created in hardware, the contents for the display surface underneath the area where the overlay is shown will be overwritten when the overlay is displayed.</P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN2831" ></A ><H2 >See Also</H2 ><P ><A HREF="sdloverlay.html" ><SPAN CLASS="STRUCTNAME" >SDL_Overlay</SPAN ></A >, <A HREF="sdldisplayyuvoverlay.html" ><TT CLASS="FUNCTION" >SDL_DisplayYUVOverlay</TT ></A >, <A HREF="sdlfreeyuvoverlay.html" ><TT CLASS="FUNCTION" >SDL_FreeYUVOverlay</TT ></A ></P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="sdlglswapbuffers.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="sdllockyuvoverlay.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >SDL_GL_SwapBuffers</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="video.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >SDL_LockYUVOverlay</TD ></TR ></TABLE ></DIV ></BODY ></HTML >