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Date: Sun, 22 Mar 2009 12:52:29 +0000 From: Luke Benstead Subject: OpenGL 3.0 Context Creation I've attached a patch which implements OpenGL 3.x context creation on the latest SVN. I've added two options to SDL_GL_SetAttribute, these are SDL_GL_CONTEXT_MAJOR_VERSION and SDL_GL_CONTEXT_MINOR_VERSION. These default to 2 and 1 respectively. If the major version is less than 3 then the current context creation method is used, otherwise the appropriate new context creation function is called (depending on the platform). Sample code: if (SDL_Init(SDL_INIT_VIDEO) != 0) { printf("Unable to initialize SDL: %s\n", SDL_GetError()); return 1; } SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3); //Without these 2 lines, SDL will create a GL 2.x context SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 0); SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1); SDL_Surface* screen = SDL_SetVideoMode( 640, 480, 16, SDL_OPENGL | SDL_FULLSCREEN ); I've implemented context creation on both Win32 and X and run basic tests on both. This patch doesn't provide access to all the options allowed by the new context creation (e.g. shared contexts, forward compatible contexts) but they can be added pretty easily.
author Sam Lantinga <slouken@libsdl.org>
date Tue, 24 Mar 2009 10:43:53 +0000
parents 355632dca928
children
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<HTML
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><TITLE
>SDL_KeyboardEvent</TITLE
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><H1
><A
NAME="SDLKEYBOARDEVENT"
></A
>SDL_KeyboardEvent</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN4011"
></A
><H2
>Name</H2
>SDL_KeyboardEvent&nbsp;--&nbsp;Keyboard event structure</DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN4014"
></A
><H2
>Structure Definition</H2
><PRE
CLASS="PROGRAMLISTING"
>typedef struct{
  Uint8 type;
  Uint8 state;
  SDL_keysym keysym;
} SDL_KeyboardEvent;</PRE
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN4017"
></A
><H2
>Structure Data</H2
><DIV
CLASS="INFORMALTABLE"
><A
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></A
><P
></P
><TABLE
BORDER="0"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><TT
CLASS="STRUCTFIELD"
><I
>type</I
></TT
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
><TT
CLASS="LITERAL"
>SDL_KEYDOWN</TT
> or <TT
CLASS="LITERAL"
>SDL_KEYUP</TT
></TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><TT
CLASS="STRUCTFIELD"
><I
>state</I
></TT
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
><TT
CLASS="LITERAL"
>SDL_PRESSED</TT
> or <TT
CLASS="LITERAL"
>SDL_RELEASED</TT
></TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><TT
CLASS="STRUCTFIELD"
><I
>keysym</I
></TT
></TD
><TD
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>Contains key press information</TD
></TR
></TBODY
></TABLE
><P
></P
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><DIV
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><A
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></A
><H2
>Description</H2
><P
><SPAN
CLASS="STRUCTNAME"
>SDL_KeyboardEvent</SPAN
> is a member of the <A
HREF="sdlevent.html"
><SPAN
CLASS="STRUCTNAME"
>SDL_Event</SPAN
></A
> union and is used when an event of type <TT
CLASS="LITERAL"
>SDL_KEYDOWN</TT
> or <TT
CLASS="LITERAL"
>SDL_KEYUP</TT
> is reported.</P
><P
>The <TT
CLASS="STRUCTFIELD"
><I
>type</I
></TT
> and <TT
CLASS="STRUCTFIELD"
><I
>state</I
></TT
> actually report the same information, they just use different values to do it! A keyboard event occurs when a key is released (<TT
CLASS="STRUCTFIELD"
><I
>type</I
></TT
>=<TT
CLASS="LITERAL"
>SDK_KEYUP</TT
> or <TT
CLASS="STRUCTFIELD"
><I
>state</I
></TT
>=<TT
CLASS="LITERAL"
>SDL_RELEASED</TT
>) and when a key is pressed (<TT
CLASS="STRUCTFIELD"
><I
>type</I
></TT
>=<TT
CLASS="LITERAL"
>SDL_KEYDOWN</TT
> or <TT
CLASS="STRUCTFIELD"
><I
>state</I
></TT
>=<TT
CLASS="LITERAL"
>SDL_PRESSED</TT
>). The information on what key was pressed or released is in the <A
HREF="sdlkeysym.html"
><SPAN
CLASS="STRUCTNAME"
>keysym</SPAN
></A
> structure.</P
><DIV
CLASS="NOTE"
><BLOCKQUOTE
CLASS="NOTE"
><P
><B
>Note: </B
>Repeating <TT
CLASS="LITERAL"
>SDL_KEYDOWN</TT
> events will occur if key repeat is enabled (see <A
HREF="sdlenablekeyrepeat.html"
><TT
CLASS="FUNCTION"
>SDL_EnableKeyRepeat</TT
></A
>).</P
></BLOCKQUOTE
></DIV
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><A
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></A
><H2
>See Also</H2
><P
><A
HREF="sdlevent.html"
><SPAN
CLASS="STRUCTNAME"
>SDL_Event</SPAN
></A
>,
<A
HREF="sdlkeysym.html"
><SPAN
CLASS="STRUCTNAME"
>SDL_keysym</SPAN
></A
>,
<A
HREF="sdlenablekeyrepeat.html"
><TT
CLASS="FUNCTION"
>SDL_EnableKeyRepeat</TT
></A
>,
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HREF="sdlenableunicode.html"
><TT
CLASS="FUNCTION"
>SDL_EnableUNICODE</TT
></A
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