589 lines
7.4 KiB
HTML
589 lines
7.4 KiB
HTML
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<HTML
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><HEAD
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><TITLE
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>SDL_Surface</TITLE
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><META
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NAME="GENERATOR"
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CONTENT="Modular DocBook HTML Stylesheet Version 1.64
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"><LINK
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REL="HOME"
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TITLE="SDL Library Documentation"
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HREF="index.html"><LINK
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REL="UP"
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TITLE="Video"
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HREF="video.html"><LINK
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REL="PREVIOUS"
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TITLE="SDL_PixelFormat"
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HREF="sdlpixelformat.html"><LINK
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REL="NEXT"
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TITLE="SDL_VideoInfo"
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HREF="sdlvideoinfo.html"></HEAD
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><BODY
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CLASS="REFENTRY"
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BGCOLOR="#FFF8DC"
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TEXT="#000000"
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LINK="#0000ee"
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VLINK="#551a8b"
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ALINK="#ff0000"
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><DIV
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CLASS="NAVHEADER"
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><TABLE
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WIDTH="100%"
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BORDER="0"
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CELLPADDING="0"
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CELLSPACING="0"
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><TR
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><TH
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COLSPAN="3"
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ALIGN="center"
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>SDL Library Documentation</TH
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></TR
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><TR
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><TD
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WIDTH="10%"
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ALIGN="left"
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VALIGN="bottom"
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><A
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HREF="sdlpixelformat.html"
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>Prev</A
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></TD
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><TD
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WIDTH="80%"
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ALIGN="center"
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VALIGN="bottom"
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></TD
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><TD
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WIDTH="10%"
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ALIGN="right"
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VALIGN="bottom"
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><A
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HREF="sdlvideoinfo.html"
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>Next</A
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></TD
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></TR
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></TABLE
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><HR
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ALIGN="LEFT"
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WIDTH="100%"></DIV
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><H1
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><A
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NAME="SDLSURFACE"
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>SDL_Surface</A
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></H1
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><DIV
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CLASS="REFNAMEDIV"
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><A
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NAME="AEN2841"
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></A
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><H2
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>Name</H2
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>SDL_Surface -- Graphical Surface Structure</DIV
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><DIV
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CLASS="REFSECT1"
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><A
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NAME="AEN2844"
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></A
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><H2
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>Structure Definition</H2
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><PRE
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CLASS="PROGRAMLISTING"
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>typedef struct SDL_Surface {
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Uint32 flags; /* Read-only */
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SDL_PixelFormat *format; /* Read-only */
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int w, h; /* Read-only */
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Uint16 pitch; /* Read-only */
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void *pixels; /* Read-write */
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/* clipping information */
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SDL_Rect clip_rect; /* Read-only */
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/* Reference count -- used when freeing surface */
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int refcount; /* Read-mostly */
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/* This structure also contains private fields not shown here */
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} SDL_Surface;</PRE
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></DIV
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><DIV
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CLASS="REFSECT1"
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><A
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NAME="AEN2847"
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></A
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><H2
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>Structure Data</H2
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><DIV
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CLASS="INFORMALTABLE"
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><A
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NAME="AEN2849"
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></A
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><P
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></P
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><TABLE
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BORDER="0"
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CLASS="CALSTABLE"
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><TBODY
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><TR
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><TD
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ALIGN="LEFT"
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VALIGN="TOP"
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><TT
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CLASS="STRUCTFIELD"
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><I
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>flags</I
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></TT
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></TD
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><TD
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ALIGN="LEFT"
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VALIGN="TOP"
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>Surface flags</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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VALIGN="TOP"
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><TT
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CLASS="STRUCTFIELD"
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><I
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>format</I
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></TT
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></TD
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><TD
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ALIGN="LEFT"
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VALIGN="TOP"
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>Pixel <A
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HREF="sdlpixelformat.html"
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>format</A
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></TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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VALIGN="TOP"
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><TT
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CLASS="STRUCTFIELD"
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><I
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>w, h</I
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></TT
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></TD
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><TD
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ALIGN="LEFT"
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VALIGN="TOP"
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>Width and height of the surface</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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VALIGN="TOP"
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><TT
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CLASS="STRUCTFIELD"
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><I
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>pitch</I
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></TT
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></TD
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><TD
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ALIGN="LEFT"
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VALIGN="TOP"
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>Length of a surface scanline in bytes</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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VALIGN="TOP"
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><TT
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CLASS="STRUCTFIELD"
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><I
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>pixels</I
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></TT
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></TD
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><TD
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ALIGN="LEFT"
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VALIGN="TOP"
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>Pointer to the actual pixel data</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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VALIGN="TOP"
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><TT
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CLASS="STRUCTFIELD"
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><I
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>clip_rect</I
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></TT
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></TD
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><TD
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ALIGN="LEFT"
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VALIGN="TOP"
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>surface clip <A
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HREF="sdlrect.html"
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>rectangle</A
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></TD
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></TR
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></TBODY
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></TABLE
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><P
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></P
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></DIV
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></DIV
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><DIV
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CLASS="REFSECT1"
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><A
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NAME="AEN2878"
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></A
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><H2
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>Description</H2
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><P
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><SPAN
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CLASS="STRUCTNAME"
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>SDL_Surface</SPAN
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>'s represent areas of "graphical"
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memory, memory that can be drawn to. The video framebuffer is returned
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as a <SPAN
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CLASS="STRUCTNAME"
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>SDL_Surface</SPAN
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> by
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<A
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HREF="sdlsetvideomode.html"
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><TT
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CLASS="FUNCTION"
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>SDL_SetVideoMode</TT
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></A
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>
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and <A
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HREF="sdlgetvideosurface.html"
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><TT
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CLASS="FUNCTION"
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>SDL_GetVideoSurface</TT
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></A
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>.
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Most of the fields should be pretty obvious.
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<TT
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CLASS="STRUCTFIELD"
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><I
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>w</I
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></TT
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> and <TT
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CLASS="STRUCTFIELD"
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><I
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>h</I
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></TT
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> are the
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width and height of the surface in pixels.
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<TT
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CLASS="STRUCTFIELD"
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><I
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>pixels</I
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></TT
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> is a pointer to the actual pixel data,
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the surface should be <A
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HREF="sdllocksurface.html"
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>locked</A
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>
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before accessing this field. The <TT
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CLASS="STRUCTFIELD"
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><I
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>clip_rect</I
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></TT
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> field
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is the clipping rectangle as set by
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<A
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HREF="sdlsetcliprect.html"
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><TT
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CLASS="FUNCTION"
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>SDL_SetClipRect</TT
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></A
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>.</P
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><P
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>The following are supported in the
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<TT
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CLASS="STRUCTFIELD"
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><I
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>flags</I
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></TT
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> field.</P
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><DIV
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CLASS="INFORMALTABLE"
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><A
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NAME="AEN2896"
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></A
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><P
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></P
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><TABLE
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BORDER="1"
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CLASS="CALSTABLE"
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><TBODY
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><TR
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><TD
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ALIGN="LEFT"
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VALIGN="TOP"
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><TT
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CLASS="LITERAL"
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>SDL_SWSURFACE</TT
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></TD
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><TD
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ALIGN="LEFT"
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VALIGN="TOP"
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>Surface is stored in system memory</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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VALIGN="TOP"
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><TT
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CLASS="LITERAL"
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>SDL_HWSURFACE</TT
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></TD
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><TD
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ALIGN="LEFT"
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VALIGN="TOP"
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>Surface is stored in video memory</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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VALIGN="TOP"
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><TT
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CLASS="LITERAL"
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>SDL_ASYNCBLIT</TT
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></TD
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><TD
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ALIGN="LEFT"
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VALIGN="TOP"
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>Surface uses asynchronous blits if possible</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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VALIGN="TOP"
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><TT
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CLASS="LITERAL"
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>SDL_ANYFORMAT</TT
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></TD
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><TD
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ALIGN="LEFT"
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VALIGN="TOP"
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>Allows any pixel-format (Display surface)</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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VALIGN="TOP"
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><TT
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CLASS="LITERAL"
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>SDL_HWPALETTE</TT
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></TD
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><TD
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ALIGN="LEFT"
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VALIGN="TOP"
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>Surface has exclusive palette</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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VALIGN="TOP"
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><TT
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CLASS="LITERAL"
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>SDL_DOUBLEBUF</TT
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></TD
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><TD
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ALIGN="LEFT"
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VALIGN="TOP"
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>Surface is double buffered (Display surface)</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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VALIGN="TOP"
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><TT
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CLASS="LITERAL"
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>SDL_FULLSCREEN</TT
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></TD
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><TD
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ALIGN="LEFT"
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VALIGN="TOP"
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>Surface is full screen (Display Surface)</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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VALIGN="TOP"
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><TT
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CLASS="LITERAL"
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>SDL_OPENGL</TT
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></TD
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><TD
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ALIGN="LEFT"
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VALIGN="TOP"
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>Surface has an OpenGL context (Display Surface)</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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VALIGN="TOP"
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><TT
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CLASS="LITERAL"
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>SDL_OPENGLBLIT</TT
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></TD
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><TD
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ALIGN="LEFT"
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VALIGN="TOP"
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>Surface supports OpenGL blitting (Display Surface)</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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VALIGN="TOP"
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><TT
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CLASS="LITERAL"
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>SDL_RESIZABLE</TT
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></TD
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><TD
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ALIGN="LEFT"
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VALIGN="TOP"
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>Surface is resizable (Display Surface)</TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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||
|
|
VALIGN="TOP"
|
||
|
|
><TT
|
||
|
|
CLASS="LITERAL"
|
||
|
|
>SDL_HWACCEL</TT
|
||
|
|
></TD
|
||
|
|
><TD
|
||
|
|
ALIGN="LEFT"
|
||
|
|
VALIGN="TOP"
|
||
|
|
>Surface blit uses hardware acceleration</TD
|
||
|
|
></TR
|
||
|
|
><TR
|
||
|
|
><TD
|
||
|
|
ALIGN="LEFT"
|
||
|
|
VALIGN="TOP"
|
||
|
|
><TT
|
||
|
|
CLASS="LITERAL"
|
||
|
|
>SDL_SRCCOLORKEY</TT
|
||
|
|
></TD
|
||
|
|
><TD
|
||
|
|
ALIGN="LEFT"
|
||
|
|
VALIGN="TOP"
|
||
|
|
>Surface use colorkey blitting</TD
|
||
|
|
></TR
|
||
|
|
><TR
|
||
|
|
><TD
|
||
|
|
ALIGN="LEFT"
|
||
|
|
VALIGN="TOP"
|
||
|
|
><TT
|
||
|
|
CLASS="LITERAL"
|
||
|
|
>SDL_RLEACCEL</TT
|
||
|
|
></TD
|
||
|
|
><TD
|
||
|
|
ALIGN="LEFT"
|
||
|
|
VALIGN="TOP"
|
||
|
|
>Colorkey blitting is accelerated with RLE</TD
|
||
|
|
></TR
|
||
|
|
><TR
|
||
|
|
><TD
|
||
|
|
ALIGN="LEFT"
|
||
|
|
VALIGN="TOP"
|
||
|
|
><TT
|
||
|
|
CLASS="LITERAL"
|
||
|
|
>SDL_SRCALPHA</TT
|
||
|
|
></TD
|
||
|
|
><TD
|
||
|
|
ALIGN="LEFT"
|
||
|
|
VALIGN="TOP"
|
||
|
|
>Surface blit uses alpha blending</TD
|
||
|
|
></TR
|
||
|
|
><TR
|
||
|
|
><TD
|
||
|
|
ALIGN="LEFT"
|
||
|
|
VALIGN="TOP"
|
||
|
|
><TT
|
||
|
|
CLASS="LITERAL"
|
||
|
|
>SDL_PREALLOC</TT
|
||
|
|
></TD
|
||
|
|
><TD
|
||
|
|
ALIGN="LEFT"
|
||
|
|
VALIGN="TOP"
|
||
|
|
>Surface uses preallocated memory</TD
|
||
|
|
></TR
|
||
|
|
></TBODY
|
||
|
|
></TABLE
|
||
|
|
><P
|
||
|
|
></P
|
||
|
|
></DIV
|
||
|
|
></DIV
|
||
|
|
><DIV
|
||
|
|
CLASS="REFSECT1"
|
||
|
|
><A
|
||
|
|
NAME="AEN2959"
|
||
|
|
></A
|
||
|
|
><H2
|
||
|
|
>See Also</H2
|
||
|
|
><P
|
||
|
|
><A
|
||
|
|
HREF="sdlpixelformat.html"
|
||
|
|
><SPAN
|
||
|
|
CLASS="STRUCTNAME"
|
||
|
|
>SDL_PixelFormat</SPAN
|
||
|
|
></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="sdlpixelformat.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="sdlvideoinfo.html"
|
||
|
|
>Next</A
|
||
|
|
></TD
|
||
|
|
></TR
|
||
|
|
><TR
|
||
|
|
><TD
|
||
|
|
WIDTH="33%"
|
||
|
|
ALIGN="left"
|
||
|
|
VALIGN="top"
|
||
|
|
>SDL_PixelFormat</TD
|
||
|
|
><TD
|
||
|
|
WIDTH="34%"
|
||
|
|
ALIGN="center"
|
||
|
|
VALIGN="top"
|
||
|
|
><A
|
||
|
|
HREF="video.html"
|
||
|
|
>Up</A
|
||
|
|
></TD
|
||
|
|
><TD
|
||
|
|
WIDTH="33%"
|
||
|
|
ALIGN="right"
|
||
|
|
VALIGN="top"
|
||
|
|
>SDL_VideoInfo</TD
|
||
|
|
></TR
|
||
|
|
></TABLE
|
||
|
|
></DIV
|
||
|
|
></BODY
|
||
|
|
></HTML
|
||
|
|
>
|