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view docs/html/sdlcreateyuvoverlay.html @ 787:07760c8854d1
Date: Sat, 24 Jan 2004 14:49:58 +0100
From: Stephane Marchesin
Subject: Re: [SDL] 3DNow! detection on a P4 system
Well... I found another bug : 3dnow was detected on P2/P3 cpus. So I
took one more look at the code and found a mistake in
CPU_getCPUIDFeaturesExt :
The condition for having extended cpuinfo is that when we query extended
cpuinfo we get a result >= 0x80000001. So we must exit if eax < 0x80000001.
The attached patch does that.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Sat, 24 Jan 2004 15:55:00 +0000 |
parents | e5bc29de3f0a |
children | 355632dca928 |
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<HTML ><HEAD ><TITLE >SDL_CreateYUVOverlay</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.64 "><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 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" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="sdllockyuvoverlay.html" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="SDLCREATEYUVOVERLAY" >SDL_CreateYUVOverlay</A ></H1 ><DIV CLASS="REFNAMEDIV" ><A NAME="AEN2424" ></A ><H2 >Name</H2 >SDL_CreateYUVOverlay -- Create a YUV video overlay</DIV ><DIV CLASS="REFSYNOPSISDIV" ><A NAME="AEN2427" ></A ><H2 >Synopsis</H2 ><DIV CLASS="FUNCSYNOPSIS" ><A NAME="AEN2428" ></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="AEN2434" ></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="AEN2447" ></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 WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="sdlglswapbuffers.html" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="sdllockyuvoverlay.html" >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" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >SDL_LockYUVOverlay</TD ></TR ></TABLE ></DIV ></BODY ></HTML >