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view src/video/win32/wactab/pktdef.h @ 3100:7dc982143c06

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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 f23ebf1ddac4
children
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/* *INDENT-OFF* */
/* -------------------------------- pktdef.h -------------------------------- */
/* Combined 16 & 32-bit version. */

/*------------------------------------------------------------------------------
The text and information contained in this file may be freely used,
copied, or distributed without compensation or licensing restrictions.

This file is copyright 1991-1998 by LCS/Telegraphics.
------------------------------------------------------------------------------*/
/*------------------------------------------------------------------------------

How to use pktdef.h:

1. Include wintab.h
2. if using just one packet format:
	a. Define PACKETDATA and PACKETMODE as or'ed combinations of WTPKT bits
	   (use the PK_* identifiers).
	b. Include pktdef.h.
	c. The generated structure typedef will be called PACKET.  Use PACKETDATA
	   and PACKETMODE to fill in the LOGCONTEXT structure.
3. If using multiple packet formats, for each one:
	a. Define PACKETNAME. Its text value will be a prefix for this packet's
	   parameters and names.
	b. Define <PACKETNAME>PACKETDATA and <PACKETNAME>PACKETMODE similar to
	   2.a. above.
	c. Include pktdef.h.
	d. The generated structure typedef will be called
	   <PACKETNAME>PACKET. Compare with 2.c. above and example #2 below.
4. If using extension packet data, do the following additional steps
   for each extension:
	a. Before including pktdef.h, define <PACKETNAME>PACKET<EXTENSION>
	   as either PKEXT_ABSOLUTE or PKEXT_RELATIVE.
	b. The generated structure typedef will contain a field for the
	   extension data.
	c. Scan the WTI_EXTENSION categories to find the extension's
	   packet mask bit.
	d. OR the packet mask bit with <PACKETNAME>PACKETDATA and use the
	   result in the lcPktData field of the LOGCONTEXT structure.
	e. If <PACKETNAME>PACKET<EXTENSION> was PKEXT_RELATIVE, OR the
	   packet mask bit with <PACKETNAME>PACKETMODE and use the result
	   in the lcPktMode field of the LOGCONTEXT structure.


Example #1.	-- single packet format

#include <wintab.h>
#define PACKETDATA	PK_X | PK_Y | PK_BUTTONS	/@ x, y, buttons @/
#define PACKETMODE	PK_BUTTONS					/@ buttons relative mode @/
#include <pktdef.h>
...
	lc.lcPktData = PACKETDATA;
	lc.lcPktMode = PACKETMODE;

Example #2. -- multiple formats

#include <wintab.h>
#define PACKETNAME		MOE
#define MOEPACKETDATA	PK_X | PK_Y | PK_BUTTONS	/@ x, y, buttons @/
#define MOEPACKETMODE	PK_BUTTONS					/@ buttons relative mode @/
#include <pktdef.h>
#define PACKETNAME		LARRY
#define LARRYPACKETDATA	PK_Y | PK_Z | PK_BUTTONS	/@ y, z, buttons @/
#define LARRYPACKETMODE	PK_BUTTONS					/@ buttons relative mode @/
#include <pktdef.h>
#define PACKETNAME		CURLY
#define CURLYPACKETDATA	PK_X | PK_Z | PK_BUTTONS	/@ x, z, buttons @/
#define CURLYPACKETMODE	PK_BUTTONS					/@ buttons relative mode @/
#include <pktdef.h>
...
	lcMOE.lcPktData = MOEPACKETDATA;
	lcMOE.lcPktMode = MOEPACKETMODE;
...
	lcLARRY.lcPktData = LARRYPACKETDATA;
	lcLARRY.lcPktMode = LARRYPACKETMODE;
...
	lcCURLY.lcPktData = CURLYPACKETDATA;
	lcCURLY.lcPktMode = CURLYPACKETMODE;

Example #3. -- extension packet data "XFOO".
	
#include <wintab.h>
#define PACKETDATA	PK_X | PK_Y | PK_BUTTONS	/@ x, y, buttons @/
#define PACKETMODE	PK_BUTTONS					/@ buttons relative mode @/
#define PACKETXFOO	PKEXT_ABSOLUTE				/@ XFOO absolute mode @/
#include <pktdef.h>
...
UINT ScanExts(UINT wTag)
{
	UINT i;
	UINT wScanTag;

	/@ scan for wTag's info category. @/
	for (i = 0; WTInfo(WTI_EXTENSIONS + i, EXT_TAG, &wScanTag); i++) {
		 if (wTag == wScanTag) {
			/@ return category offset from WTI_EXTENSIONS. @/
			return i;
		}
	}
	/@ return error code. @/
	return 0xFFFF;
}
...
	lc.lcPktData = PACKETDATA;
	lc.lcPktMode = PACKETMODE;
#ifdef PACKETXFOO
	categoryXFOO = ScanExts(WTX_XFOO);
	WTInfo(WTI_EXTENSIONS + categoryXFOO, EXT_MASK, &maskXFOO);
	lc.lcPktData |= maskXFOO;
#if PACKETXFOO == PKEXT_RELATIVE
	lc.lcPktMode |= maskXFOO;
#endif
#endif
	WTOpen(hWnd, &lc, TRUE);


------------------------------------------------------------------------------*/
#ifdef __cplusplus
extern "C" {
#endif	/* __cplusplus */

#ifndef PACKETNAME
	/* if no packet name prefix */
	#define __PFX(x)	x
	#define __IFX(x,y)	x ## y
#else
	/* add prefixes and infixes to packet format names */
	#define __PFX(x)		__PFX2(PACKETNAME,x)
	#define __PFX2(p,x)		__PFX3(p,x)
	#define __PFX3(p,x)		p ## x
	#define __IFX(x,y)		__IFX2(x,PACKETNAME,y)
	#define __IFX2(x,i,y)	__IFX3(x,i,y)
	#define __IFX3(x,i,y)	x ## i ## y
#endif

#define __SFX2(x,s)		__SFX3(x,s)
#define __SFX3(x,s)		x ## s

#define __TAG  	__IFX(tag,PACKET)
#define __TYPES	__PFX(PACKET), * __IFX(P,PACKET), NEAR * __IFX(NP,PACKET), \
					FAR * __IFX(LP,PACKET)

#define __DATA		(__PFX(PACKETDATA))
#define __MODE		(__PFX(PACKETMODE))
#define __EXT(x)	__SFX2(__PFX(PACKET),x)

	
typedef struct __TAG {
	#if (__DATA & PK_CONTEXT)
		HCTX			pkContext;
	#endif
	#if (__DATA & PK_STATUS)
		UINT			pkStatus;
	#endif
	#if (__DATA & PK_TIME)
		DWORD			pkTime;
	#endif
	#if (__DATA & PK_CHANGED)
		WTPKT			pkChanged;
	#endif
	#if (__DATA & PK_SERIAL_NUMBER)
		UINT			pkSerialNumber;
	#endif
	#if (__DATA & PK_CURSOR)
		UINT			pkCursor;
	#endif
	#if (__DATA & PK_BUTTONS)
		DWORD			pkButtons;
	#endif
	#if (__DATA & PK_X)
		LONG			pkX;
	#endif
	#if (__DATA & PK_Y)
		LONG			pkY;
	#endif
	#if (__DATA & PK_Z)
		LONG			pkZ;
	#endif
	#if (__DATA & PK_NORMAL_PRESSURE)
		#if (__MODE & PK_NORMAL_PRESSURE)
			/* relative */
			int			pkNormalPressure;
		#else
			/* absolute */
			UINT		pkNormalPressure;
		#endif
	#endif
	#if (__DATA & PK_TANGENT_PRESSURE)
		#if (__MODE & PK_TANGENT_PRESSURE)
			/* relative */
			int			pkTangentPressure;
		#else
			/* absolute */
			UINT		pkTangentPressure;
		#endif
	#endif
	#if (__DATA & PK_ORIENTATION)
		ORIENTATION		pkOrientation;
	#endif
	#if (__DATA & PK_ROTATION)
		ROTATION		pkRotation; /* 1.1 */
	#endif

#ifndef NOWTEXTENSIONS
	/* extensions begin here. */
	#if (__EXT(FKEYS) == PKEXT_RELATIVE) || (__EXT(FKEYS) == PKEXT_ABSOLUTE)
		UINT			pkFKeys;
	#endif
	#if (__EXT(TILT) == PKEXT_RELATIVE) || (__EXT(TILT) == PKEXT_ABSOLUTE)
		TILT			pkTilt;
	#endif
	#if (__EXT(EXPKEYS) == PKEXT_RELATIVE) || (__EXT(EXPKEYS) == PKEXT_ABSOLUTE)
		WORD			pkExpKeys[4]; /* 1.3 */
	#endif
#endif

} __TYPES ;

#undef PACKETNAME
#undef __TAG
#undef __TAG2
#undef __TYPES
#undef __TYPES2
#undef __DATA
#undef __MODE
#undef __PFX
#undef __PFX2
#undef __PFX3
#undef __IFX
#undef __IFX2
#undef __IFX3
#undef __SFX2
#undef __SFX3

#ifdef __cplusplus
}
#endif	/* __cplusplus */