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Adam Strzelecki to SDL Since current DirectFB implementation is incomplete for YUV surfaces (actually causes segmentation faults when trying Lock and use YUV planar textures) I decided to fix it a bit. Here's a patch that should make DirectFB properly support YUV both packed and planar (3 planes). (1) Removed SDL_BYTESPERPIXEL at all in favor of DFB_BYTES_PER_PIXEL(SDLToDFBPixelFormat(fmt)) which does return always proper BPP for YUVs too, coz SDL_BYTESPERPIXEL returns incorrect values for FOURCCs (2) Fixed data->pixels allocation for planar YUVs in CreateTexture, it should allocate 150% more space (3) Copy other planes for planar YUVs in UpdateTexture (4) Moved checking if format is supported at all with DirectFB on CreateTexture at the beginning of the code Waiting for comments, -- Adam Strzelecki | nanoant.com
author Sam Lantinga <slouken@libsdl.org>
date Sun, 04 Oct 2009 04:03:37 +0000
parents 355632dca928
children
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<HTML
><HEAD
><TITLE
>SDL_ShowCursor</TITLE
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><H1
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NAME="SDLSHOWCURSOR"
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>SDL_ShowCursor</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN2615"
></A
><H2
>Name</H2
>SDL_ShowCursor&nbsp;--&nbsp;Toggle whether or not the cursor is shown on the screen.</DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN2618"
></A
><H2
>Synopsis</H2
><DIV
CLASS="FUNCSYNOPSIS"
><A
NAME="AEN2619"
></A
><P
></P
><PRE
CLASS="FUNCSYNOPSISINFO"
>#include "SDL.h"</PRE
><P
><CODE
><CODE
CLASS="FUNCDEF"
>int <B
CLASS="FSFUNC"
>SDL_ShowCursor</B
></CODE
>(int toggle);</CODE
></P
><P
></P
></DIV
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN2625"
></A
><H2
>Description</H2
><P
>Toggle whether or not the cursor is shown on the screen. Passing <TT
CLASS="LITERAL"
>SDL_ENABLE</TT
> displays the cursor and passing <TT
CLASS="LITERAL"
>SDL_DISABLE</TT
> hides it. The current state of the mouse cursor can be queried by passing <TT
CLASS="LITERAL"
>SDL_QUERY</TT
>, either <TT
CLASS="LITERAL"
>SDL_DISABLE</TT
> or <TT
CLASS="LITERAL"
>SDL_ENABLE</TT
> will be returned.</P
><P
>The cursor starts off displayed, but can be turned off.</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN2634"
></A
><H2
>Return Value</H2
><P
>Returns the current state of the cursor.</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN2637"
></A
><H2
>See Also</H2
><P
><A
HREF="sdlcreatecursor.html"
><TT
CLASS="FUNCTION"
>SDL_CreateCursor</TT
></A
>,
<A
HREF="sdlsetcursor.html"
><TT
CLASS="FUNCTION"
>SDL_SetCursor</TT
></A
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