engine/engine/gl/gl_vidnt.c

/*
Copyright (C) 1996-1997 Id Software, Inc.

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

*/
// gl_vidnt.c -- NT GL vid component

#include "quakedef.h"
#ifdef GLQUAKE
#include "glquake.h"
#include "winquake.h"
#include "resource.h"
#include "shader.h"
#include <commctrl.h>

void STT_Event(void);

#ifndef SetWindowLongPtr	//yes its a define, for unicode support
#define SetWindowLongPtr SetWindowLong
#endif

#ifndef CDS_FULLSCREEN
	#define CDS_FULLSCREEN 4
#endif

#ifndef WM_XBUTTONDOWN
   #define WM_XBUTTONDOWN      0x020B
   #define WM_XBUTTONUP      0x020C
#endif
#ifndef MK_XBUTTON1
   #define MK_XBUTTON1         0x0020
#endif
#ifndef MK_XBUTTON2
   #define MK_XBUTTON2         0x0040
#endif
// copied from DarkPlaces in an attempt to grab more buttons
#ifndef MK_XBUTTON3
   #define MK_XBUTTON3         0x0080
#endif
#ifndef MK_XBUTTON4
   #define MK_XBUTTON4         0x0100
#endif
#ifndef MK_XBUTTON5
   #define MK_XBUTTON5         0x0200
#endif
#ifndef MK_XBUTTON6
   #define MK_XBUTTON6         0x0400
#endif
#ifndef MK_XBUTTON7
   #define MK_XBUTTON7         0x0800
#endif

#ifndef WM_INPUT
	#define WM_INPUT 255
#endif

#ifndef WS_EX_LAYERED
	#define WS_EX_LAYERED 0x00080000
#endif
#ifndef LWA_ALPHA
	#define LWA_ALPHA 0x00000002
#endif
typedef BOOL (WINAPI *lpfnSetLayeredWindowAttributes)(HWND hwnd, COLORREF crKey, BYTE bAlpha, DWORD dwFlags);

extern cvar_t vid_conwidth, vid_conautoscale;


#define WINDOW_CLASS_NAME_W L"FTEGLQuake"
#define WINDOW_CLASS_NAME_A "FTEGLQuake"

#define MAX_MODE_LIST	128
#define VID_ROW_SIZE	3
#define WARP_WIDTH		320
#define WARP_HEIGHT		200
#define MAXWIDTH		10000
#define MAXHEIGHT		10000
#define BASEWIDTH		320
#define BASEHEIGHT		200

extern cvar_t vid_width;
extern cvar_t vid_height;
extern cvar_t vid_wndalpha;

const char *wgl_extensions;

typedef enum {MS_WINDOWED, MS_FULLDIB, MS_FULLWINDOW, MS_UNINIT} modestate_t;

BOOL bSetupPixelFormat(HDC hDC, rendererstate_t *info);

//qboolean VID_SetWindowedMode (int modenum);
//qboolean VID_SetFullDIBMode (int modenum);
qboolean VID_SetWindowedMode (rendererstate_t *info);	//-1 on bpp or hz for default.
qboolean VID_SetFullDIBMode (rendererstate_t *info);	//-1 on bpp or hz for default.

qboolean		scr_skipupdate;

//#define WTHREAD
#ifdef WTHREAD
static HANDLE	windowthread;
static void		*windowmutex;
#endif

static DEVMODE	gdevmode;
static qboolean	vid_initialized = false;
static qboolean vid_canalttab = false;
static qboolean vid_wassuspended = false;
extern qboolean	mouseactive;  // from in_win.c
static HICON	hIcon;
extern qboolean vid_isfullscreen;

unsigned short originalgammaramps[3][256];

qboolean vid_initializing;

qboolean VID_AttachGL (rendererstate_t *info);

int			DIBWidth, DIBHeight;
RECT		WindowRect;
DWORD		WindowStyle, ExWindowStyle;

HWND	mainwindow, dibwindow;

unsigned char	vid_curpal[256*3];

HGLRC	baseRC;
HDC		maindc;


HWND WINAPI InitializeWindow (HINSTANCE hInstance, int nCmdShow);

viddef_t	vid;				// global video state

//unsigned short	d_8to16rgbtable[256];
//unsigned	d_8to24rgbtable[256];
//unsigned short	d_8to16bgrtable[256];
//unsigned	d_8to24bgrtable[256];

modestate_t	modestate = MS_UNINIT;

extern float gammapending;


LONG WINAPI GLMainWndProc (HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
qboolean GLAppActivate(BOOL fActive, BOOL minimize);
void ClearAllStates (void);
void VID_UpdateWindowStatus (HWND hWnd);
void GL_Init(void *(*getglfunction) (char *name));

typedef void (APIENTRY *lp3DFXFUNC) (int, int, int, int, int, const void*);
lp3DFXFUNC qglColorTableEXT;
qboolean is8bit = false;
qboolean isPermedia = false;

//====================================
// Note that 0 is MODE_WINDOWED
extern cvar_t	vid_mode;
// Note that 3 is MODE_FULLSCREEN_DEFAULT
extern cvar_t		vid_vsync;
extern cvar_t		_windowed_mouse;
extern cvar_t		vid_hardwaregamma;
extern cvar_t		vid_desktopgamma;
extern cvar_t		gl_lateswap;
extern cvar_t		vid_preservegamma;

extern cvar_t		vid_gl_context_version;
extern cvar_t		vid_gl_context_debug;
extern cvar_t		vid_gl_context_es;
extern cvar_t		vid_gl_context_forwardcompatible;
extern cvar_t		vid_gl_context_compatibility;
extern cvar_t		vid_gl_context_robustness;
extern cvar_t		vid_gl_context_selfreset;

int			window_center_x, window_center_y, window_x, window_y, window_width, window_height;
RECT		window_rect;

dllhandle_t *hInstGL = NULL;
dllhandle_t *hInstwgl = NULL;
static qboolean usingminidriver;
static char reqminidriver[MAX_OSPATH];
static char opengldllname[MAX_OSPATH];

#ifdef _DEBUG
//this is a list of the functions that exist in opengles2, as well as wglCreateContextAttribsARB.
//functions not in this list *should* be stubs that just return errors, but we can't always depend on drivers for that... they shouldn't get called.
//this list is just to make it easier to test+debug android gles2 stuff using windows.
static char *gles2funcs[] =
{
#define f(n) #n,
		f(glActiveTexture)
		f(glAttachShader)
		f(glBindAttribLocation)
		f(glBindBuffer)
		f(glBindFramebuffer)
		f(glBindRenderbuffer)
		f(glBindTexture)
		f(glBlendColor)
		f(glBlendEquation)
		f(glBlendEquationSeparate)
		f(glBlendFunc)
		f(glBlendFuncSeparate)
		f(glBufferData)
		f(glBufferSubData)
		f(glCheckFramebufferStatus)
		f(glClear)
		f(glClearColor)
		f(glClearDepthf)
		f(glClearStencil)
		f(glColorMask)
		f(glCompileShader)
		f(glCompressedTexImage2D)
		f(glCompressedTexSubImage2D)
		f(glCopyTexImage2D)
		f(glCopyTexSubImage2D)
		f(glCreateProgram)
		f(glCreateShader)
		f(glCullFace)
		f(glDeleteBuffers)
		f(glDeleteFramebuffers)
		f(glDeleteProgram)
		f(glDeleteRenderbuffers)
		f(glDeleteShader)
		f(glDeleteTextures)
		f(glDepthFunc)
		f(glDepthMask)
		f(glDepthRangef)
		f(glDetachShader)
		f(glDisable)
		f(glDisableVertexAttribArray)
		f(glDrawArrays)
		f(glDrawElements)
		f(glEnable)
		f(glEnableVertexAttribArray)
		f(glFinish)
		f(glFlush)
		f(glFramebufferRenderbuffer)
		f(glFramebufferTexture2D)
		f(glFrontFace)
		f(glGenBuffers)
		f(glGenerateMipmap)
		f(glGenFramebuffers)
 		f(glGenRenderbuffers)
		f(glGenTextures)
		f(glGetActiveAttrib)
		f(glGetActiveUniform)
		f(glGetAttachedShaders)
		f(glGetAttribLocation)
		f(glGetBooleanv)
		f(glGetBufferParameteriv)
		f(glGetError)
		f(glGetFloatv)
		f(glGetFramebufferAttachmentParameteriv)
		f(glGetIntegerv)
		f(glGetProgramiv)
		f(glGetProgramInfoLog)
		f(glGetRenderbufferParameteriv)
		f(glGetShaderiv)
		f(glGetShaderInfoLog)
		f(glGetShaderPrecisionFormat)
		f(glGetShaderSource)
		f(glGetString)
		f(glGetTexParameterfv)
		f(glGetTexParameteriv)
		f(glGetUniformfv)
		f(glGetUniformiv)
		f(glGetUniformLocation)
		f(glGetVertexAttribfv)
		f(glGetVertexAttribiv)
		f(glGetVertexAttribPointerv)
		f(glHint)
		f(glIsBuffer)
		f(glIsEnabled)
		f(glIsFramebuffer)
		f(glIsProgram)
		f(glIsRenderbuffer)
		f(glIsShader)
		f(glIsTexture)
		f(glLineWidth)
		f(glLinkProgram)
		f(glPixelStorei)
		f(glPolygonOffset)
		f(glReadPixels)
		f(glReleaseShaderCompiler)
		f(glRenderbufferStorage)
		f(glSampleCoverage)
		f(glScissor)
		f(glShaderBinary)
		f(glShaderSource)
		f(glStencilFunc)
		f(glStencilFuncSeparate)
		f(glStencilMask)
		f(glStencilMaskSeparate)
		f(glStencilOp)
		f(glStencilOpSeparate)
		f(glTexImage2D)
		f(glTexParameterf)
		f(glTexParameterfv)
		f(glTexParameteri)
		f(glTexParameteriv)
		f(glTexSubImage2D)
		f(glUniform1f)
		f(glUniform1fv)
		f(glUniform1i)
		f(glUniform1iv)
		f(glUniform2f)
		f(glUniform2fv)
		f(glUniform2i)
		f(glUniform2iv)
		f(glUniform3f)
		f(glUniform3fv)
		f(glUniform3i)
		f(glUniform3iv)
		f(glUniform4f)
		f(glUniform4fv)
		f(glUniform4i)
		f(glUniform4iv)
		f(glUniformMatrix2fv)
		f(glUniformMatrix3fv)
		f(glUniformMatrix4fv)
		f(glUseProgram)
		f(glValidateProgram)
		f(glVertexAttrib1f)
		f(glVertexAttrib1fv)
		f(glVertexAttrib2f)
		f(glVertexAttrib2fv)
		f(glVertexAttrib3f)
		f(glVertexAttrib3fv)
		f(glVertexAttrib4f)
		f(glVertexAttrib4fv)
		f(glVertexAttribPointer)
		f(glViewport)
		f(wglCreateContextAttribsARB)
		NULL
};

//this is a list of the functions that exist in opengles2, as well as wglCreateContextAttribsARB.
//functions not in this list *should* be stubs that just return errors, but we can't always depend on drivers for that... they shouldn't get called.
//this list is just to make it easier to test+debug android gles2 stuff using windows.
static char *gles1funcs[] =
{
#define f(n) #n,

		/* Available only in Common profile */
		f(glAlphaFunc)
		f(glClearColor)
		f(glClearDepthf)
		f(glClipPlanef)
		f(glColor4f)
		f(glDepthRangef)
		f(glFogf)
		f(glFogfv)
		f(glFrustumf)
		f(glGetClipPlanef)
		f(glGetFloatv)
		f(glGetLightfv)
		f(glGetMaterialfv)
		f(glGetTexEnvfv)
		f(glGetTexParameterfv)
		f(glLightModelf)
		f(glLightModelfv)
		f(glLightf)
		f(glLightfv)
		f(glLineWidth)
		f(glLoadMatrixf)
		f(glMaterialf)
		f(glMaterialfv)
		f(glMultMatrixf)
		f(glMultiTexCoord4f)
		f(glNormal3f)
		f(glOrthof)
		f(glPointParameterf)
		f(glPointParameterfv)
		f(glPointSize)
		f(glPolygonOffset)
		f(glRotatef)
		f(glScalef)
		f(glTexEnvf)
		f(glTexEnvfv)
		f(glTexParameterf)
		f(glTexParameterfv)
		f(glTranslatef)

		/* Available in both Common and Common-Lite profiles */
		f(glActiveTexture)
		f(glAlphaFuncx)
		f(glBindBuffer)
		f(glBindTexture)
		f(glBlendFunc)
		f(glBufferData)
		f(glBufferSubData)
		f(glClear)
		f(glClearColorx)
		f(glClearDepthx)
		f(glClearStencil)
		f(glClientActiveTexture)
		f(glClipPlanex)
		f(glColor4ub)
		f(glColor4x)
		f(glColorMask)
		f(glColorPointer)
		f(glCompressedTexImage2D)
		f(glCompressedTexSubImage2D)
		f(glCopyTexImage2D)
		f(glCopyTexSubImage2D)
		f(glCullFace)
		f(glDeleteBuffers)
		f(glDeleteTextures)
		f(glDepthFunc)
		f(glDepthMask)
		f(glDepthRangex)
		f(glDisable)
		f(glDisableClientState)
		f(glDrawArrays)
		f(glDrawElements)
		f(glEnable)
		f(glEnableClientState)
		f(glFinish)
		f(glFlush)
		f(glFogx)
		f(glFogxv)
		f(glFrontFace)
		f(glFrustumx)
		f(glGetBooleanv)
		f(glGetBufferParameteriv)
		f(glGetClipPlanex)
		f(glGenBuffers)
		f(glGenTextures)
		f(glGetError)
		f(glGetFixedv)
		f(glGetIntegerv)
		f(glGetLightxv)
		f(glGetMaterialxv)
		f(glGetPointerv)
		f(glGetString)
		f(glGetTexEnviv)
		f(glGetTexEnvxv)
		f(glGetTexParameteriv)
		f(glGetTexParameterxv)
		f(glHint)
		f(glIsBuffer)
		f(glIsEnabled)
		f(glIsTexture)
		f(glLightModelx)
		f(glLightModelxv)
		f(glLightx)
		f(glLightxv)
		f(glLineWidthx)
		f(glLoadIdentity)
		f(glLoadMatrixx)
		f(glLogicOp)
		f(glMaterialx)
		f(glMaterialxv)
		f(glMatrixMode)
		f(glMultMatrixx)
		f(glMultiTexCoord4x)
		f(glNormal3x)
		f(glNormalPointer)
		f(glOrthox)
		f(glPixelStorei)
		f(glPointParameterx)
		f(glPointParameterxv)
		f(glPointSizex)
		f(glPolygonOffsetx)
		f(glPopMatrix)
		f(glPushMatrix)
		f(glReadPixels)
		f(glRotatex)
		f(glSampleCoverage)
		f(glSampleCoveragex)
		f(glScalex)
		f(glScissor)
		f(glShadeModel)
		f(glStencilFunc)
		f(glStencilMask)
		f(glStencilOp)
		f(glTexCoordPointer)
		f(glTexEnvi)
		f(glTexEnvx)
		f(glTexEnviv)
		f(glTexEnvxv)
		f(glTexImage2D)
		f(glTexParameteri)
		f(glTexParameterx)
		f(glTexParameteriv)
		f(glTexParameterxv)
		f(glTexSubImage2D)
		f(glTranslatex)
		f(glVertexPointer)
		f(glViewport)

		/*required to switch stuff around*/
		f(wglCreateContextAttribsARB)
		NULL
};
#endif

//just GetProcAddress with a safty net.
void *getglfunc(char *name)
{
	FARPROC proc;
	proc = qwglGetProcAddress?qwglGetProcAddress(name):NULL;
	if (!proc)
	{
		proc = GetProcAddress(hInstGL, name);
		TRACE(("dbg: getglfunc: gpa %s: success %i\n", name, !!proc));
	}
	else
	{
		TRACE(("dbg: getglfunc: glgpa %s: success %i\n", name, !!proc));
	}

#ifdef _DEBUG
	if (vid_gl_context_es.ival == 3)
	{
		int i;
		for (i = 0; gles1funcs[i]; i++)
		{
			if (!strcmp(name, gles1funcs[i]))
				return proc;
		}
		return NULL;
	}
	if (vid_gl_context_es.ival == 2)
	{
		int i;
		for (i = 0; gles2funcs[i]; i++)
		{
			if (!strcmp(name, gles2funcs[i]))
				return proc;
		}
		return NULL;
	}
#endif
	return proc;
}
void *getwglfunc(char *name)
{
	FARPROC proc;
	TRACE(("dbg: getwglfunc: %s: getting\n", name));

	proc = GetProcAddress(hInstGL, name);
	if (!proc)
	{
		if (!hInstwgl)
		{
			TRACE(("dbg: getwglfunc: explicitly loading opengl32.dll\n", name));
			hInstwgl = LoadLibraryA("opengl32.dll");
		}
		TRACE(("dbg: getwglfunc: %s: wglgetting\n", name));
		proc = GetProcAddress(hInstwgl, name);
		TRACE(("dbg: getwglfunc: gpa %s: success %i\n", name, !!proc));
		if (!proc)
			Sys_Error("GL function %s was not found in %s\nPossibly you do not have a full enough gl implementation", name, opengldllname);
	}
	TRACE(("dbg: getwglfunc: glgpa %s: success %i\n", name, !!proc));
	return proc;
}

HGLRC (WINAPI *qwglCreateContext)(HDC);
BOOL  (WINAPI *qwglDeleteContext)(HGLRC);
HGLRC (WINAPI *qwglGetCurrentContext)(VOID);
HDC   (WINAPI *qwglGetCurrentDC)(VOID);
PROC  (WINAPI *qwglGetProcAddress)(LPCSTR);
BOOL  (WINAPI *qwglMakeCurrent)(HDC, HGLRC);
BOOL  (WINAPI *qSwapBuffers)(HDC);
BOOL  (WINAPI *qwglSwapLayerBuffers)(HDC, UINT);
int   (WINAPI *qChoosePixelFormat)(HDC, CONST PIXELFORMATDESCRIPTOR *);
BOOL  (WINAPI *qSetPixelFormat)(HDC, int, CONST PIXELFORMATDESCRIPTOR *);
int   (WINAPI *qDescribePixelFormat)(HDC, int, UINT, LPPIXELFORMATDESCRIPTOR);

BOOL (WINAPI *qwglSwapIntervalEXT) (int);

BOOL (APIENTRY *qGetDeviceGammaRamp)(HDC hDC, GLvoid *ramp);
BOOL (APIENTRY *qSetDeviceGammaRamp)(HDC hDC, GLvoid *ramp);

BOOL (APIENTRY *qwglChoosePixelFormatARB)(HDC hdc, const int *piAttribIList, const FLOAT *pfAttribFList, UINT nMaxFormats, int* piFormats, UINT* nNumFormats);

HGLRC (APIENTRY *qwglCreateContextAttribsARB)(HDC hDC, HGLRC hShareContext, const int *attribList);
#define WGL_CONTEXT_MAJOR_VERSION_ARB		0x2091
#define WGL_CONTEXT_MINOR_VERSION_ARB		0x2092
#define WGL_CONTEXT_LAYER_PLANE_ARB			0x2093
#define WGL_CONTEXT_FLAGS_ARB				0x2094
#define		WGL_CONTEXT_DEBUG_BIT_ARB					0x0001
#define		WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB		0x0002
#define		WGL_CONTEXT_ROBUST_ACCESS_BIT_ARB			0x0004 /*WGL_ARB_create_context_robustness*/
#define WGL_CONTEXT_PROFILE_MASK_ARB		0x9126		/*WGL_ARB_create_context_profile*/
#define		WGL_CONTEXT_CORE_PROFILE_BIT_ARB			0x00000001
#define		WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB	0x00000002
#define		WGL_CONTEXT_ES2_PROFILE_BIT_EXT				0x00000004	/*WGL_CONTEXT_ES2_PROFILE_BIT_EXT*/
#define ERROR_INVALID_VERSION_ARB			0x2095
#define	ERROR_INVALID_PROFILE_ARB		0x2096
#define WGL_CONTEXT_RESET_NOTIFICATION_STRATEGY_ARB		0x8256	/*WGL_ARB_create_context_robustness*/
#define		WGL_NO_RESET_NOTIFICATION_ARB					0x8261
#define		WGL_LOSE_CONTEXT_ON_RESET_ARB					0x8252


//pixel format stuff
#define 	WGL_DRAW_TO_WINDOW_ARB		0x2001
#define 	WGL_ACCELERATION_ARB		0x2003
#define		WGL_SWAP_LAYER_BUFFERS_ARB	0x2006
#define 	WGL_SUPPORT_OPENGL_ARB		0x2010
#define 	WGL_DOUBLE_BUFFER_ARB		0x2011
#define		WGL_STEREO_ARB				0x2012
#define 	WGL_COLOR_BITS_ARB			0x2014
#define 	WGL_ALPHA_BITS_ARB			0x201B
#define 	WGL_DEPTH_BITS_ARB			0x2022
#define 	WGL_STENCIL_BITS_ARB		0x2023
#define 	WGL_FULL_ACCELERATION_ARB	0x2027
qboolean shouldforcepixelformat;
int forcepixelformat;
int currentpixelformat;

qboolean GLInitialise (char *renderer)
{
	if (!hInstGL || strcmp(reqminidriver, renderer))
	{
		usingminidriver = false;
		if (hInstGL)
			Sys_CloseLibrary(hInstGL);
		hInstGL=NULL;
		if (hInstwgl)
			Sys_CloseLibrary(hInstwgl);
		hInstwgl=NULL;

		Q_strncpyz(reqminidriver, renderer, sizeof(reqminidriver));
		Q_strncpyz(opengldllname, renderer, sizeof(opengldllname));

		if (*renderer && stricmp(renderer, "opengl32.dll") && stricmp(renderer, "opengl32"))
		{
			unsigned int emode = SetErrorMode(SEM_FAILCRITICALERRORS); /*no annoying errors if they use glide*/
			Con_DPrintf ("Loading renderer dll \"%s\"", renderer);
			hInstGL = Sys_LoadLibrary(opengldllname, NULL);
			SetErrorMode(emode);
			if (hInstGL)
			{
				usingminidriver = true;
				Con_DPrintf (" Success\n");
			}
			else
				Con_DPrintf (" Failed\n");
		}
		else
			hInstGL = NULL;

		if (!hInstGL)
		{	//gog has started shipping glquake using a 3dfxopengl->nglide->direct3d chain of wrappers.
			//this bypasses issues with (not that) recent gl drivers giving up on limiting extension string lengths and paletted textures
			//instead, we explicitly try to use the opengl32.dll from the windows system32 directory to try and avoid using the wrapper.
			unsigned int emode;
			wchar_t wbuffer[MAX_OSPATH];
			GetSystemDirectoryW(wbuffer, countof(wbuffer));
			narrowen(opengldllname, sizeof(opengldllname), wbuffer);
			Q_strncatz(opengldllname, "\\opengl32.dll", sizeof(opengldllname));
			Con_DPrintf ("Loading renderer dll \"%s\"", opengldllname);
			emode = SetErrorMode(SEM_FAILCRITICALERRORS);
			hInstGL = Sys_LoadLibrary(opengldllname, NULL);
			SetErrorMode(emode);

			if (hInstGL)
				Con_DPrintf (" Success\n");
			else
				Con_DPrintf (" Failed\n");
		}

		if (!hInstGL)
		{
			unsigned int emode;
			strcpy(opengldllname, "opengl32");
			Con_DPrintf ("Loading renderer dll \"%s\"", opengldllname);
			emode = SetErrorMode(SEM_FAILCRITICALERRORS); /*no annoying errors if they use glide*/
			hInstGL = Sys_LoadLibrary(opengldllname, NULL);
			SetErrorMode(emode);

			if (hInstGL)
				Con_DPrintf (" Success\n");
			else
				Con_DPrintf (" Failed\n");
		}
		if (!hInstGL)
		{
			if (*renderer)
				Con_Printf ("Couldn't load %s or %s\n", renderer, opengldllname);
			else
				Con_Printf ("Couldn't load %s\n", opengldllname);
			return false;
		}
	}
	else
	{
		Con_DPrintf ("Reusing renderer dll %s\n", opengldllname);
	}

	Con_DPrintf ("Loaded renderer dll %s\n", opengldllname);

	// windows dependant
	qwglCreateContext		= (void *)getwglfunc("wglCreateContext");
	qwglDeleteContext		= (void *)getwglfunc("wglDeleteContext");
	qwglGetCurrentContext	= (void *)getwglfunc("wglGetCurrentContext");
	qwglGetCurrentDC		= (void *)getwglfunc("wglGetCurrentDC");
	qwglGetProcAddress		= (void *)getwglfunc("wglGetProcAddress");
	qwglMakeCurrent			= (void *)getwglfunc("wglMakeCurrent");

	if (usingminidriver)
	{
		qwglSwapLayerBuffers	= NULL;
		qSwapBuffers			= (void *)getglfunc("wglSwapBuffers");
		qChoosePixelFormat		= (void *)getglfunc("wglChoosePixelFormat");
		qSetPixelFormat			= (void *)getglfunc("wglSetPixelFormat");
		qDescribePixelFormat	= (void *)getglfunc("wglDescribePixelFormat");
	}
	else
	{
		qwglSwapLayerBuffers	= NULL;//(void *)getwglfunc("wglSwapLayerBuffers");
		qSwapBuffers			= SwapBuffers;
		qChoosePixelFormat		= ChoosePixelFormat;
		qSetPixelFormat			= SetPixelFormat;
		qDescribePixelFormat	= DescribePixelFormat;
	}

	qGetDeviceGammaRamp			= (void *)getglfunc("wglGetDeviceGammaRamp3DFX");
	qSetDeviceGammaRamp			= (void *)getglfunc("wglSetDeviceGammaRamp3DFX");

	TRACE(("dbg: GLInitialise: got wgl funcs\n"));

	return true;
}

/*doesn't consider parent offsets*/
RECT centerrect(unsigned int parentleft, unsigned int parenttop, unsigned int parentwidth, unsigned int parentheight, unsigned int cwidth, unsigned int cheight)
{
	RECT r;
	if (modestate!=MS_WINDOWED)
	{
		if (!vid_width.ival)
			cwidth = parentwidth;
		if (!vid_height.ival)
			cheight = parentwidth;
	}

	if (parentwidth < cwidth)
	{
		r.left = parentleft;
		r.right = r.left+parentwidth;
	}
	else
	{
		r.left = parentleft + (parentwidth - cwidth) / 2;
		r.right = r.left + cwidth;
	}

	if (parentheight < cheight)
	{
		r.top = parenttop;
		r.bottom = r.top + parentheight;
	}
	else
	{
		r.top = parenttop + (parentheight - cheight) / 2;
		r.bottom = r.top + cheight;
	}

	return r;
}

qboolean VID_SetWindowedMode (rendererstate_t *info)
//qboolean VID_SetWindowedMode (int modenum)
{
	int i;
	HDC				hdc;
	int				wwidth, wheight, pleft, ptop, pwidth, pheight;
	RECT			rect;

	modestate = MS_WINDOWED;

	hdc = GetDC(NULL);
	if (GetDeviceCaps(hdc, RASTERCAPS) & RC_PALETTE)
	{
		ReleaseDC(NULL, hdc);
		Con_Printf("Can't run GL in non-RGB mode\n");
		return false;
	}
	ReleaseDC(NULL, hdc);

	WindowRect.top = WindowRect.left = 0;

	WindowRect.right = info->width;
	WindowRect.bottom = info->height;


#ifndef FTE_SDL
	if (sys_parentwindow)
	{
		SetWindowLong(sys_parentwindow, GWL_STYLE, GetWindowLong(sys_parentwindow, GWL_STYLE)|WS_OVERLAPPED);
		WindowStyle = WS_CHILDWINDOW|WS_OVERLAPPED;
		ExWindowStyle = 0;

		pleft = sys_parentleft;
		ptop = sys_parenttop;
		pwidth = sys_parentwidth;
		pheight = sys_parentheight;

		WindowRect.right = sys_parentwidth;
		WindowRect.bottom = sys_parentheight;
	}
	else
#endif
	{
		WindowStyle = WS_OVERLAPPED | WS_BORDER | WS_CAPTION | WS_SYSMENU |
					  WS_MINIMIZEBOX;
		ExWindowStyle = 0;

		WindowStyle |= WS_SIZEBOX | WS_MAXIMIZEBOX;

		pleft = 0;
		ptop = 0;
		pwidth = GetSystemMetrics(SM_CXSCREEN);
		pheight = GetSystemMetrics(SM_CYSCREEN);

		/*Assume dual monitors, and chop the width to try to put it on only one screen*/
		if (pwidth >= pheight*2)
			pwidth /= 2;
	}

	DIBWidth = WindowRect.right - WindowRect.left;
	DIBHeight = WindowRect.bottom - WindowRect.top;

	rect = WindowRect;
	AdjustWindowRectEx(&rect, WindowStyle, FALSE, 0);

	wwidth = rect.right - rect.left;
	wheight = rect.bottom - rect.top;

	WindowRect = centerrect(pleft, ptop, pwidth, pheight, wwidth, wheight);

	// Create the DIB window
	if (WinNT)
	{
		dibwindow = CreateWindowExW (
			 ExWindowStyle,
			 WINDOW_CLASS_NAME_W,
			 _L(FULLENGINENAME),
			 WindowStyle,
			 WindowRect.left, WindowRect.top,
			 WindowRect.right - WindowRect.left,
			 WindowRect.bottom - WindowRect.top,
			 sys_parentwindow,
			 NULL,
			 global_hInstance,
			 NULL);
	}
	else
	{
		dibwindow = CreateWindowExA (
			 ExWindowStyle,
			 WINDOW_CLASS_NAME_A,
			 FULLENGINENAME,
			 WindowStyle,
			 WindowRect.left, WindowRect.top,
			 WindowRect.right - WindowRect.left,
			 WindowRect.bottom - WindowRect.top,
			 sys_parentwindow,
			 NULL,
			 global_hInstance,
			 NULL);
	}

	if (!dibwindow)
	{
		Con_Printf ("Couldn't create DIB window");
		return false;
	}

	SendMessage (dibwindow, WM_SETICON, (WPARAM)TRUE, (LPARAM)hIcon);
	SendMessage (dibwindow, WM_SETICON, (WPARAM)FALSE, (LPARAM)hIcon);

	if (!sys_parentwindow)
	{
#ifdef WS_EX_LAYERED
		int av;
		av = 255*vid_wndalpha.value;
		if (av < 70)
			av = 70;
		if (av < 255)
		{
			HMODULE hm = GetModuleHandleA("user32.dll");
			lpfnSetLayeredWindowAttributes pSetLayeredWindowAttributes;
			pSetLayeredWindowAttributes = (void*)GetProcAddress(hm, "SetLayeredWindowAttributes");

			if (pSetLayeredWindowAttributes)
			{
				// Set WS_EX_LAYERED on this window
				SetWindowLong(dibwindow, GWL_EXSTYLE, GetWindowLong(dibwindow, GWL_EXSTYLE) | WS_EX_LAYERED);

				// Make this window 70% alpha
				pSetLayeredWindowAttributes(dibwindow, 0, (BYTE)av, LWA_ALPHA);
			}
		}
#endif
	}

	ShowWindow (dibwindow, SW_SHOWDEFAULT);
	SetFocus(dibwindow);

//	ShowWindow (dibwindow, SW_SHOWDEFAULT);
//	UpdateWindow (dibwindow);

// because we have set the background brush for the window to NULL
// (to avoid flickering when re-sizing the window on the desktop),
// we clear the window to black when created, otherwise it will be
// empty while Quake starts up.
	hdc = GetDC(dibwindow);
	PatBlt(hdc,0,0,WindowRect.right,WindowRect.bottom,BLACKNESS);
	ReleaseDC(dibwindow, hdc);

	if ((i = COM_CheckParm("-conwidth")) != 0)
		vid.width = Q_atoi(com_argv[i+1]);
	else
	{
		vid.width = 640;
	}

	vid.width &= 0xfff8; // make it a multiple of eight

	if (vid.width < 320)
		vid.width = 320;

	// pick a conheight that matches with correct aspect
	vid.height = vid.width*3 / 4;

	if ((i = COM_CheckParm("-conheight")) != 0)
		vid.height = Q_atoi(com_argv[i+1]);
	if (vid.height < 200)
		vid.height = 200;

	if (vid.height > info->height)
		vid.height = info->height;
	if (vid.width > info->width)
		vid.width = info->width;

	vid.numpages = 2;

	mainwindow = dibwindow;
	vid_isfullscreen=false;

	CL_UpdateWindowTitle();

	return true;
}

void GLVID_SetCaption(char *text)
{
	wchar_t wide[2048];
	widen(wide, sizeof(wide), text);
	SetWindowTextW(mainwindow, wide);
}


qboolean VID_SetFullDIBMode (rendererstate_t *info)
{
	int i;
	HDC				hdc;
	int				wwidth, wheight;
	RECT			rect;

	if (info->fullscreen != 2)
	{	//make windows change res.

		modestate = MS_FULLDIB;

		gdevmode.dmFields = DM_PELSWIDTH | DM_PELSHEIGHT;
		if (info->bpp)
			gdevmode.dmFields |= DM_BITSPERPEL;
		if (info->rate)
			gdevmode.dmFields |= DM_DISPLAYFREQUENCY;
		gdevmode.dmBitsPerPel = info->bpp;
		if (info->bpp && (gdevmode.dmBitsPerPel < 15))
		{
			Con_Printf("Forcing at least 15bpp\n");
			gdevmode.dmBitsPerPel = 16;
		}
		gdevmode.dmDisplayFrequency = info->rate;
		gdevmode.dmPelsWidth = info->width;
		gdevmode.dmPelsHeight = info->height;
		gdevmode.dmSize = sizeof (gdevmode);

		if (ChangeDisplaySettings (&gdevmode, CDS_FULLSCREEN) != DISP_CHANGE_SUCCESSFUL)
		{
			Con_SafePrintf((gdevmode.dmFields&DM_DISPLAYFREQUENCY)?"Windows rejected mode %i*%i*%ibpp@%ihz\n":"Windows rejected mode %i*%i*%ibpp\n", (int)gdevmode.dmPelsWidth, (int)gdevmode.dmPelsHeight, (int)gdevmode.dmBitsPerPel, (int)gdevmode.dmDisplayFrequency);
			return false;
		}
	}
	else
	{
		modestate = MS_FULLWINDOW;
		
	}

	WindowRect.top = WindowRect.left = 0;

	WindowRect.right = info->width;
	WindowRect.bottom = info->height;

	DIBWidth = info->width;
	DIBHeight = info->height;

	WindowStyle = WS_POPUP;
	ExWindowStyle = 0;

	rect = WindowRect;
	AdjustWindowRectEx(&rect, WindowStyle, FALSE, 0);

	wwidth = rect.right - rect.left;
	wheight = rect.bottom - rect.top;

	// Create the DIB window
	if(WinNT)
	{
		dibwindow = CreateWindowExW (
			ExWindowStyle,
			WINDOW_CLASS_NAME_W,
			_L(FULLENGINENAME),
			WindowStyle,
			rect.left, rect.top,
			wwidth,
			wheight,
			NULL,
			NULL,
			global_hInstance,
			NULL);
	}
	else
	{
		dibwindow = CreateWindowExA (
			ExWindowStyle,
			WINDOW_CLASS_NAME_A,
			FULLENGINENAME,
			WindowStyle,
			rect.left, rect.top,
			wwidth,
			wheight,
			NULL,
			NULL,
			global_hInstance,
			NULL);
	}

	if (!dibwindow)
		Sys_Error ("Couldn't create DIB window");

	SendMessage (dibwindow, WM_SETICON, (WPARAM)TRUE, (LPARAM)hIcon);
	SendMessage (dibwindow, WM_SETICON, (WPARAM)FALSE, (LPARAM)hIcon);

	if (modestate == MS_FULLWINDOW)
		ShowWindow (dibwindow, SW_SHOWMAXIMIZED);
	else
		ShowWindow (dibwindow, SW_SHOWDEFAULT);
	UpdateWindow (dibwindow);

	// Because we have set the background brush for the window to NULL
	// (to avoid flickering when re-sizing the window on the desktop), we
	// clear the window to black when created, otherwise it will be
	// empty while Quake starts up.
	hdc = GetDC(dibwindow);
	PatBlt(hdc,0,0,WindowRect.right,WindowRect.bottom,BLACKNESS);
	ReleaseDC(dibwindow, hdc);


	if ((i = COM_CheckParm("-conwidth")) != 0)
		vid.width = Q_atoi(com_argv[i+1]);
	else
		vid.width = 640;

	vid.width &= 0xfff8; // make it a multiple of eight

	if (vid.width < 320)
		vid.width = 320;

	// pick a conheight that matches with correct aspect
	vid.height = vid.width*3 / 4;

	if ((i = COM_CheckParm("-conheight")) != 0)
		vid.height = Q_atoi(com_argv[i+1]);
	if (vid.height < 200)
		vid.height = 200;

	if (vid.height > info->height)
		vid.height = info->height;
	if (vid.width > info->width)
		vid.width = info->width;

	vid.numpages = 2;

// needed because we're not getting WM_MOVE messages fullscreen on NT
	window_x = 0;
	window_y = 0;
	vid_isfullscreen=true;

	mainwindow = dibwindow;

	return true;
}

extern qboolean gammaworks;
static void ReleaseGL(void);
static void Win_Touch_Init(HWND wnd);
static qboolean CreateMainWindow(rendererstate_t *info)
{
	qboolean		stat;
	if (WinNT)
	{
		WNDCLASSW		wc;
		/* Register the frame class */
		wc.style         = CS_OWNDC;
		wc.lpfnWndProc   = (WNDPROC)GLMainWndProc;
		wc.cbClsExtra    = 0;
		wc.cbWndExtra    = 0;
		wc.hInstance     = global_hInstance;
		wc.hIcon         = hIcon;
		wc.hCursor       = hArrowCursor;
		wc.hbrBackground = NULL;
		wc.lpszMenuName  = 0;
		wc.lpszClassName = WINDOW_CLASS_NAME_W;
		if (!RegisterClassW (&wc))	//this isn't really fatal, we'll let the CreateWindow fail instead.
			Con_Printf("RegisterClass failed\n");
	}
	else
	{
		WNDCLASSA		wc;
		/* Register the frame class */
		wc.style         = CS_OWNDC;
		wc.lpfnWndProc   = (WNDPROC)GLMainWndProc;
		wc.cbClsExtra    = 0;
		wc.cbWndExtra    = 0;
		wc.hInstance     = global_hInstance;
		wc.hIcon         = hIcon;
		wc.hCursor       = hArrowCursor;
		wc.hbrBackground = NULL;
		wc.lpszMenuName  = 0;
		wc.lpszClassName = WINDOW_CLASS_NAME_A;
		if (!RegisterClassA (&wc))	//this isn't really fatal, we'll let the CreateWindow fail instead.
			Con_Printf("RegisterClass failed\n");
	}

	if (!info->fullscreen)
	{
		TRACE(("dbg: GLVID_SetMode: VID_SetWindowedMode\n"));
		stat = VID_SetWindowedMode(info);
	}
	else
	{
		TRACE(("dbg: GLVID_SetMode: VID_SetFullDIBMode\n"));
		stat = VID_SetFullDIBMode(info);
	}
	VID_UpdateWindowStatus(mainwindow);

	Win_Touch_Init(mainwindow);

	INS_UpdateGrabs(info->fullscreen, vid.activeapp);

	return stat;
}

#ifdef WTHREAD
rendererstate_t *rs;
int GLVID_WindowThread(void *cond)
{
	extern qboolean mouseshowtoggle;
	int cursor = 1;
	MSG		msg;
	HWND wnd;
	CreateMainWindow(rs);
	wnd = mainwindow;
	Sys_ConditionSignal(cond);

	while (GetMessageW(&msg, NULL, 0, 0))
	{
		TranslateMessageW (&msg);
		DispatchMessageW (&msg);

		//ShowCursor is thread-local.
		if (cursor != mouseshowtoggle)
		{
			cursor = mouseshowtoggle;
			ShowCursor(cursor);
		}
	}
	DestroyWindow(wnd);
	return 0;
}
#endif

BOOL CheckForcePixelFormat(rendererstate_t *info);
void VID_UnSetMode (void);
int GLVID_SetMode (rendererstate_t *info, unsigned char *palette)
{
	int				temp;
	qboolean		stat;
#ifdef WTHREAD
	void			*cond;
#endif
#ifndef NPFTE
    MSG				msg;
#endif
//	HDC				hdc;

	TRACE(("dbg: GLVID_SetMode\n"));

// so Con_Printfs don't mess us up by forcing vid and snd updates
	temp = scr_disabled_for_loading;
	scr_disabled_for_loading = true;

	CDAudio_Pause ();

	// Set either the fullscreen or windowed mode
	qwglChoosePixelFormatARB = NULL;
	qwglCreateContextAttribsARB = NULL;

#ifdef WTHREAD
	cond = Sys_CreateConditional();
	Sys_LockConditional(cond);
	rs = info;
	windowthread = Sys_CreateThread("windowthread", GLVID_WindowThread, cond, 0, 0);
	if (!Sys_ConditionWait(cond))
		Con_SafePrintf ("Looks like the window thread isn't starting up\n");
	Sys_UnlockConditional(cond);
	Sys_DestroyConditional(cond);

	stat = !!mainwindow;
#else
	stat = CreateMainWindow(info);
#endif

	if (stat)
	{
		stat = VID_AttachGL(info);
		if (stat)
		{
			TRACE(("dbg: GLVID_SetMode: attaching gl okay\n"));
			if (CheckForcePixelFormat(info))
			{
				HMODULE oldgl = hInstGL;
				hInstGL = NULL;	//don't close the gl library, just in case
				VID_UnSetMode();
				hInstGL = oldgl;

				if (CreateMainWindow(info) && VID_AttachGL(info))
				{
					//we have our multisample window
				}
				else
				{
					//multisample failed
					//try the origional way
					if (!CreateMainWindow(info) || !VID_AttachGL(info))
					{
						Con_Printf("Failed to undo antialising. Giving up.\n");
						return false;	//eek
					}
				}
			}
		}
		else
		{
			TRACE(("dbg: GLVID_SetMode: attaching gl failed\n"));
			return false;
		}
	}

	if (!stat)
	{
		TRACE(("dbg: GLVID_SetMode: VID_Set... failed\n"));
		return false;
	}

	window_width = DIBWidth;
	window_height = DIBHeight;
	VID_UpdateWindowStatus (mainwindow);
	Cvar_ForceCallback(&vid_conautoscale);

	CDAudio_Resume ();
	scr_disabled_for_loading = temp;

// now we try to make sure we get the focus on the mode switch, because
// sometimes in some systems we don't.  We grab the foreground, then
// finish setting up, pump all our messages, and sleep for a little while
// to let messages finish bouncing around the system, then we put
// ourselves at the top of the z order, then grab the foreground again,
// Who knows if it helps, but it probably doesn't hurt
	SetForegroundWindow (mainwindow);

#ifndef NPFTE
	/*I don't like this, but if we */
	while (PeekMessage (&msg, mainwindow, 0, 0, PM_REMOVE))
	{
      	TranslateMessage (&msg);
      	DispatchMessage (&msg);
	}
	Sleep (100);
#endif

	SetWindowPos (mainwindow, HWND_TOP, 0, 0, 0, 0,
				  SWP_DRAWFRAME | SWP_NOMOVE | SWP_NOSIZE | SWP_SHOWWINDOW |
				  SWP_NOCOPYBITS);

	SetForegroundWindow (mainwindow);

// fix the leftover Alt from any Alt-Tab or the like that switched us away
	ClearAllStates ();

	if (vid_desktopgamma.value)
	{
		HDC hDC = GetDC(GetDesktopWindow());
		gammaworks = qGetDeviceGammaRamp(hDC, originalgammaramps);
		ReleaseDC(GetDesktopWindow(), hDC);
	}
	else
		gammaworks = qGetDeviceGammaRamp(maindc, originalgammaramps);

	return true;
}

static void ReleaseGL(void)
{
	HGLRC hRC;
   	HDC	  hDC = NULL;

	if (qwglGetCurrentContext)
	{
		hRC = qwglGetCurrentContext();
		hDC = qwglGetCurrentDC();

    	qwglMakeCurrent(NULL, NULL);

    	if (hRC)
    		qwglDeleteContext(hRC);
	}
	qwglGetCurrentContext=NULL;

	if (hDC && dibwindow)
		ReleaseDC(dibwindow, hDC);
}

void VID_UnSetMode (void)
{
	if (mainwindow && vid_initialized)
	{
		GLAppActivate(false, false);

		vid_canalttab = false;
		ReleaseGL();

		if (modestate == MS_FULLDIB)
			ChangeDisplaySettings (NULL, 0);

		if (maindc && dibwindow)
			ReleaseDC (dibwindow, maindc);
	}

	if (mainwindow)
	{
		dibwindow=NULL;
	//	ShowWindow(mainwindow, SW_HIDE);
	//	SetWindowLongPtr(mainwindow, GWL_WNDPROC, DefWindowProc);
	//	PostMessage(mainwindow, WM_CLOSE, 0, 0);
#ifdef WTHREAD
		if (windowthread)
		{
			SendMessage(mainwindow, WM_USER+4, 0, 0);
			CloseHandle((HANDLE)windowthread);
			windowthread = NULL;
		}
		else
#endif
			DestroyWindow(mainwindow);
		mainwindow = NULL;
	}

#if 0
	//Logically this code should be active. However...
	//1: vid_restarts are slightly slower if we don't reuse the old dll
	//2: nvidia drivers crash if we shut it down+reload!
	if (hInstGL)
	{
		FreeLibrary(hInstGL);
		hInstGL=NULL;
	}
	if (hInstwgl)
	{
		FreeLibrary(hInstwgl);
		hInstwgl=NULL;
	}
	*opengldllname = 0;
#endif
}


/*
================
VID_UpdateWindowStatus
================
*/
void VID_UpdateWindowStatus (HWND hWnd)
{
	POINT p;
	RECT nr;
	GetClientRect(hWnd, &nr);

	//if its bad then we're probably minimised
	if (nr.right <= nr.left)
		return;
	if (nr.bottom <= nr.top)
		return;

	WindowRect = nr;
	p.x = 0;
	p.y = 0;
	ClientToScreen(hWnd, &p);
	window_x = p.x;
	window_y = p.y;
	window_width = WindowRect.right - WindowRect.left;
	window_height = WindowRect.bottom - WindowRect.top;
	vid.pixelwidth = window_width;
	vid.pixelheight = window_height;

	window_rect.left = window_x;
	window_rect.top = window_y;
	window_rect.right = window_x + window_width;
	window_rect.bottom = window_y + window_height;
	window_center_x = (window_rect.left + window_rect.right) / 2;
	window_center_y = (window_rect.top + window_rect.bottom) / 2;

	INS_UpdateClipCursor ();
}

qboolean WGL_CheckExtension(char *extname)
{
//	int i;
	int len;
	const char *foo;
	cvar_t *v = Cvar_Get(va("gl_ext_%s", extname), "1", 0, "GL Extensions");
	if (v && !v->ival)
	{
		Con_Printf("Cvar %s is 0\n", v->name);
		return false;
	}

/*	if (gl_num_extensions && qglGetStringi)
	{
		for (i = 0; i < gl_num_extensions; i++)
			if (!strcmp(qglGetStringi(GL_EXTENSIONS, i), extname))
			{
				Con_DPrintf("Detected GL extension %s\n", extname);
				return true;
			}
	}
*/
	if (!wgl_extensions)
		return false;

	//the list is space delimited. we cannot just strstr lest we find leading/trailing _FOO_.
	len = strlen(extname);
	for (foo = wgl_extensions; *foo; )
	{
		if (!strncmp(foo, extname, len) && (foo[len] == ' ' || !foo[len]))
			return true;
		while(*foo && *foo != ' ')
			foo++;
		if (*foo == ' ')
			foo++;
	}
	return false;
}

//====================================

qboolean VID_AttachGL (rendererstate_t *info)
{	//make sure we can get a valid renderer.
	do
	{
		TRACE(("dbg: VID_AttachGL: GLInitialise\n"));
		if (GLInitialise(info->subrenderer))
		{
			maindc = GetDC(mainwindow);
			TRACE(("dbg: VID_AttachGL: bSetupPixelFormat\n"));
			if (bSetupPixelFormat(maindc, info))
				break;
			ReleaseDC(mainwindow, maindc);
		}

		if (!*info->subrenderer || !stricmp(info->subrenderer, "opengl32.dll") || !stricmp(info->subrenderer, "opengl32"))	//go for windows system dir if we failed with the default. Should help to avoid the 3dfx problem.
		{
			wchar_t systemglw[MAX_OSPATH+1];
			char systemgl[MAX_OSPATH+1];
			GetSystemDirectoryW(systemglw, countof(systemglw)-1);
			narrowen(systemgl, sizeof(systemgl), systemglw);
			Q_strncatz(systemgl, "\\", sizeof(systemgl));
			if (*info->subrenderer)
				Q_strncatz(systemgl, info->subrenderer, sizeof(systemgl));
			else
				Q_strncatz(systemgl, "opengl32.dll", sizeof(systemgl));
			TRACE(("dbg: VID_AttachGL: GLInitialise (system dir specific)\n"));
			if (GLInitialise(systemgl))
			{
				maindc = GetDC(mainwindow);
				TRACE(("dbg: VID_AttachGL: bSetupPixelFormat\n"));
				if (bSetupPixelFormat(maindc, info))
					break;
				ReleaseDC(mainwindow, maindc);
			}
		}

		TRACE(("dbg: VID_AttachGL: failed to find a valid dll\n"));
		return false;
	} while(1);

	TRACE(("dbg: VID_AttachGL: qwglCreateContext\n"));

    baseRC = qwglCreateContext(maindc);
	if (!baseRC)
	{
		Con_SafePrintf(CON_ERROR "Could not initialize GL (wglCreateContext failed).\n\nMake sure you in are 65535 color mode, and try running -window.\n");	//green to make it show.
		return false;
	}
	TRACE(("dbg: VID_AttachGL: qwglMakeCurrent\n"));
    if (!qwglMakeCurrent(maindc, baseRC))
	{
		Con_SafePrintf(CON_ERROR "wglMakeCurrent failed\n");	//green to make it show.
		return false;
	}

	{
		char *(WINAPI *wglGetExtensionsString)(HDC hdc) = NULL;
		if (!wglGetExtensionsString)
			wglGetExtensionsString = getglfunc("wglGetExtensionsString");
		if (!wglGetExtensionsString)
			wglGetExtensionsString = getglfunc("wglGetExtensionsStringARB");
		if (!wglGetExtensionsString)
			wglGetExtensionsString = getglfunc("wglGetExtensionsStringEXT");
		if (wglGetExtensionsString)
			wgl_extensions = wglGetExtensionsString(maindc);
		else
			wgl_extensions = NULL;
	}

	if (developer.ival)
		Con_SafePrintf("WGL_EXTENSIONS: %s\n", wgl_extensions?wgl_extensions:"NONE");

	qwglCreateContextAttribsARB = getglfunc("wglCreateContextAttribsARB");
#if 1//def _DEBUG
	//attempt to promote that to opengl3.
	if (qwglCreateContextAttribsARB)
	{
		HGLRC opengl3;
		int attribs[11];
		char *mv;
		int i = 0;
		char *ver;

		ver = vid_gl_context_version.string;
		if (!*ver && vid_gl_context_es.ival && WGL_CheckExtension("WGL_EXT_create_context_es2_profile"))
			ver = "2.0";

		mv = ver;
		while (*mv)
		{
			if (*mv++ == '.')
				break;
		}

		if (*ver)
		{
			attribs[i++] = WGL_CONTEXT_MAJOR_VERSION_ARB;
			attribs[i++] = atoi(ver);
		}
		if (*mv)
		{
			attribs[i++] = WGL_CONTEXT_MINOR_VERSION_ARB;
			attribs[i++] = atoi(mv);
		}

		//flags
		attribs[i+1] = 0;
		if (vid_gl_context_debug.ival)
			attribs[i+1] |= WGL_CONTEXT_DEBUG_BIT_ARB;
		if (vid_gl_context_forwardcompatible.ival)
			attribs[i+1] |= WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB;
		if (vid_gl_context_robustness.ival && WGL_CheckExtension("WGL_ARB_create_context_robustness"))
			attribs[i+1] |= WGL_CONTEXT_ROBUST_ACCESS_BIT_ARB;

		if (attribs[i+1])
		{
			attribs[i] = WGL_CONTEXT_FLAGS_ARB;
			i += 2;
		}

		if (vid_gl_context_selfreset.ival &&  WGL_CheckExtension("WGL_ARB_create_context_robustness"))
		{
			attribs[i++] = WGL_CONTEXT_RESET_NOTIFICATION_STRATEGY_ARB;
			attribs[i++] = WGL_LOSE_CONTEXT_ON_RESET_ARB;
		}

		/*only switch contexts if there's actually a point*/
		if (i || !vid_gl_context_compatibility.ival || vid_gl_context_es.ival)
		{
			if (WGL_CheckExtension("WGL_ARB_create_context_profile"))
			{
				attribs[i+1] = 0;
				if (vid_gl_context_es.ival && (WGL_CheckExtension("WGL_EXT_create_context_es_profile") || WGL_CheckExtension("WGL_EXT_create_context_es2_profile")))
					attribs[i+1] |= WGL_CONTEXT_ES2_PROFILE_BIT_EXT;
				else if (vid_gl_context_compatibility.ival)
					attribs[i+1] |= WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB;
				else
					attribs[i+1] |= WGL_CONTEXT_CORE_PROFILE_BIT_ARB;
				attribs[i] = WGL_CONTEXT_PROFILE_MASK_ARB;
				//WGL_CONTEXT_PROFILE_MASK_ARB is ignored if < 3.2 - however, nvidia do not agree and return errors
				if (atof(ver) >= 3.2 || vid_gl_context_es.ival)
					i+=2;
			}

			attribs[i] = 0;

			if ((opengl3 = qwglCreateContextAttribsARB(maindc, NULL, attribs)))
			{
				qwglMakeCurrent(maindc, NULL);
				qwglDeleteContext(baseRC);

				baseRC = opengl3;
				if (!qwglMakeCurrent( maindc, baseRC ))
				{
					Con_SafePrintf(CON_ERROR "wglMakeCurrent failed\n");	//green to make it show.
					return false;
				}
			}
			else
			{
				DWORD error = GetLastError();
				if (error == (0xc0070000 | ERROR_INVALID_VERSION_ARB))
					Con_Printf("Unsupported OpenGL context version (%s).\n", vid_gl_context_version.string);
				else if (error == (0xc0070000 | ERROR_INVALID_PROFILE_ARB))
					Con_Printf("Unsupported OpenGL profile (%s).\n", vid_gl_context_es.ival?"gles":(vid_gl_context_compatibility.ival?"compat":"core"));
				else if (error == (0xc0070000 | ERROR_INVALID_OPERATION))
					Con_Printf("wglCreateContextAttribsARB returned invalid operation.\n");
				else if (error == (0xc0070000 | ERROR_DC_NOT_FOUND))
					Con_Printf("wglCreateContextAttribsARB returned dc not found.\n");
				else if (error == (0xc0070000 | ERROR_INVALID_PIXEL_FORMAT))
					Con_Printf("wglCreateContextAttribsARB returned dc not found.\n");
				else if (error == (0xc0070000 | ERROR_NO_SYSTEM_RESOURCES))
					Con_Printf("wglCreateContextAttribsARB ran out of system resources.\n");
				else if (error == (0xc0070000 | ERROR_INVALID_PARAMETER))
					Con_Printf("wglCreateContextAttribsARB reported invalid parameter.\n");
				else
					Con_Printf("Unknown error creating an OpenGL (%s) Context.\n", vid_gl_context_version.string);
			}
		}
	}
#endif

	TRACE(("dbg: VID_AttachGL: GL_Init\n"));
	GL_Init(getglfunc);

	if (info->stereo)
	{
		GLboolean ster = false;
		qglGetBooleanv(GL_STEREO, &ster);
		if (!ster)
			Con_Printf("Unable to create stereoscopic/quad-buffered OpenGL context. Please use a different stereoscopic method.\n");
	}

	qwglChoosePixelFormatARB	= getglfunc("wglChoosePixelFormatARB");

	qwglSwapIntervalEXT		= getglfunc("wglSwapIntervalEXT");
	if (qwglSwapIntervalEXT && *vid_vsync.string)
	{
		TRACE(("dbg: VID_AttachGL: qwglSwapIntervalEXT\n"));
		qwglSwapIntervalEXT(vid_vsync.value);
	}
	TRACE(("dbg: VID_AttachGL: qSwapBuffers\n"));
	qglClearColor(0, 0, 0, 1);
	qglClear(GL_COLOR_BUFFER_BIT);
	qSwapBuffers(maindc);

	if (!qGetDeviceGammaRamp) qGetDeviceGammaRamp = (void*)GetDeviceGammaRamp;
	if (!qSetDeviceGammaRamp) qSetDeviceGammaRamp = (void*)SetDeviceGammaRamp;

	return true;
}

static void QDECL VID_Wait_Override_Callback(struct cvar_s *var, char *oldvalue)
{
	if (qwglSwapIntervalEXT && *vid_vsync.string)
		qwglSwapIntervalEXT(vid_vsync.value);
}

void GLVID_Recenter_f(void)
{
	// 4 unused variables
	//int nw = vid_width.value;
	//int nh = vid_height.value;
	//int nx = 0;
	//int ny = 0;

#ifdef _MSC_VER
#define strtoull _strtoui64
#endif

	if (Cmd_Argc() > 1)
		sys_parentleft = atoi(Cmd_Argv(1));
	if (Cmd_Argc() > 2)
		sys_parenttop = atoi(Cmd_Argv(2));
	if (Cmd_Argc() > 3)
		sys_parentwidth = atoi(Cmd_Argv(3));
	if (Cmd_Argc() > 4)
		sys_parentheight = atoi(Cmd_Argv(4));
	if (Cmd_Argc() > 5)
	{
		HWND newparent = (HWND)(DWORD_PTR)strtoull(Cmd_Argv(5), NULL, 16);
		if (newparent != sys_parentwindow && mainwindow && modestate==MS_WINDOWED)
			SetParent(mainwindow, sys_parentwindow);
		sys_parentwindow = newparent;
	}

	if (sys_parentwindow && modestate==MS_WINDOWED)
	{
		WindowRect = centerrect(sys_parentleft, sys_parenttop, sys_parentwidth, sys_parentheight, sys_parentwidth, sys_parentheight);
		MoveWindow(mainwindow, WindowRect.left, WindowRect.top, WindowRect.right - WindowRect.left, WindowRect.bottom - WindowRect.top, FALSE);

		VID_UpdateWindowStatus (mainwindow);
		Cvar_ForceCallback(&vid_conautoscale);
	}
}

static void QDECL VID_WndAlpha_Override_Callback(struct cvar_s *var, char *oldvalue)
{
	//this code tells windows to use the alpha channel of the screen, but does really nasty things with the mouse such that its unplayable.
	//its not useful.
/*	if (modestate==MS_WINDOWED)
	{
		struct qDWM_BLURBEHIND 
		{
			  DWORD dwFlags;
			  BOOL  fEnable;
			  HRGN  hRgnBlur;
			  BOOL  fTransitionOnMaximized;
		} bb = {1, true, NULL, true};
		HRESULT (WINAPI *pDwmEnableBlurBehindWindow)(HWND hWnd,const struct qDWM_BLURBEHIND *pBlurBehind);
		dllfunction_t dwm[] =
		{
			{(void*)&pDwmEnableBlurBehindWindow, "DwmEnableBlurBehindWindow"},
			{NULL,NULL}
		};
		if (Sys_LoadLibrary("dwmapi.dll", dwm))
			pDwmEnableBlurBehindWindow(mainwindow, &bb);
	}
*/

#ifdef WS_EX_LAYERED
	//enable whole-window fixed transparency. should work in win2k+
	//note that this can destroy framerates, and they won't reset when the setting is reverted to 1.
	//be prepared to do a vid_restart.
	if (modestate==MS_WINDOWED)
	{
		int av;
		HMODULE hm = GetModuleHandleA("user32.dll");
		lpfnSetLayeredWindowAttributes pSetLayeredWindowAttributes;
		pSetLayeredWindowAttributes = (void*)GetProcAddress(hm, "SetLayeredWindowAttributes");

		av = 255 * var->value;
		if (av < 70)
			av = 70;
		if (av > 255)
			av = 255;

		if (pSetLayeredWindowAttributes)
		{
			// Set WS_EX_LAYERED on this window

			if (av < 255)
			{
				SetWindowLong(mainwindow, GWL_EXSTYLE, GetWindowLong(mainwindow, GWL_EXSTYLE) | WS_EX_LAYERED);

				// Make this window 70% alpha
				pSetLayeredWindowAttributes(mainwindow, 0, (BYTE)av, LWA_ALPHA);
			}
			else
			{
				SetWindowLong(mainwindow, GWL_EXSTYLE, GetWindowLong(mainwindow, GWL_EXSTYLE) & ~WS_EX_LAYERED);
				pSetLayeredWindowAttributes(mainwindow, 0, (BYTE)255, LWA_ALPHA);
			}
		}
	}
#endif
}

void GLVID_SwapBuffers (void)
{
	if (qwglSwapLayerBuffers)
	{
		if (!qwglSwapLayerBuffers(maindc, WGL_SWAP_MAIN_PLANE))
			qwglSwapLayerBuffers = NULL;
	}
	else
		qSwapBuffers(maindc);

// handle the mouse state when windowed if that's changed

	INS_UpdateGrabs(modestate != MS_WINDOWED, vid.activeapp);
}

void OblitterateOldGamma(void)
{
	int i;
	if (vid_preservegamma.value)
		return;

	for (i = 0; i < 256; i++)
	{
		originalgammaramps[0][i] = (i<<8) + i;
		originalgammaramps[1][i] = (i<<8) + i;
		originalgammaramps[2][i] = (i<<8) + i;
	}
}

qboolean GLVID_ApplyGammaRamps (unsigned short *ramps)
{
	if (ramps)
	{
		if (!gammaworks)
			return false;

		if (vid_hardwaregamma.value == 1 && modestate == MS_WINDOWED)
			return false;	//don't do hardware gamma in windowed mode

		if (vid.activeapp && vid_hardwaregamma.value)	//this is needed because ATI drivers don't work properly (or when task-switched out).
		{
			if (gammaworks)
			{	//we have hardware gamma applied - if we're doing a BF, we don't want to reset to the default gamma (yuck)
				if (vid_desktopgamma.value)
				{
					HDC hDC = GetDC(GetDesktopWindow());
					qSetDeviceGammaRamp (hDC, ramps);
					ReleaseDC(GetDesktopWindow(), hDC);
				}
				else
				{
					qSetDeviceGammaRamp (maindc, ramps);
				}
			}
			return true;
		}
		return false;
	}
	else
	{
		//revert to default
		if (qSetDeviceGammaRamp)
		{
			OblitterateOldGamma();

			if (vid_desktopgamma.value)
			{
				HDC hDC = GetDC(GetDesktopWindow());
				qSetDeviceGammaRamp (hDC, originalgammaramps);
				ReleaseDC(GetDesktopWindow(), hDC);
			}
			else
			{
				qSetDeviceGammaRamp(maindc, originalgammaramps);
			}
		}
		return true;
	}
}

void GLVID_Crashed(void)
{
	if (qSetDeviceGammaRamp && gammaworks)
	{
		OblitterateOldGamma();
		qSetDeviceGammaRamp(maindc, originalgammaramps);
	}
}

void	GLVID_Shutdown (void)
{
	if (qSetDeviceGammaRamp)
	{
		OblitterateOldGamma();

		if (vid_desktopgamma.value)
		{
			HDC hDC = GetDC(GetDesktopWindow());
			qSetDeviceGammaRamp(hDC, originalgammaramps);
			ReleaseDC(GetDesktopWindow(), hDC);
		}
		else
		{
			qSetDeviceGammaRamp(maindc, originalgammaramps);
		}
	}
	qSetDeviceGammaRamp = NULL;
	qGetDeviceGammaRamp = NULL;

	gammaworks = false;

	GLBE_Shutdown();
	Image_Shutdown();
	VID_UnSetMode();
}


//==========================================================================

BOOL CheckForcePixelFormat(rendererstate_t *info)
{
	if (qwglChoosePixelFormatARB && (info->multisample || info->srgb))
	{
		HDC hDC;
		int valid;
		float fAttribute[] = {0,0};
		UINT numFormats;
		int pixelformat;
		int iAttributes = 0;
		int iAttribute[16*2];
		iAttribute[iAttributes++] = WGL_DRAW_TO_WINDOW_ARB;				iAttribute[iAttributes++] = GL_TRUE;
		iAttribute[iAttributes++] = WGL_SUPPORT_OPENGL_ARB;				iAttribute[iAttributes++] = GL_TRUE;
		iAttribute[iAttributes++] = WGL_ACCELERATION_ARB;				iAttribute[iAttributes++] = WGL_FULL_ACCELERATION_ARB;
		iAttribute[iAttributes++] = WGL_COLOR_BITS_ARB;					iAttribute[iAttributes++] = info->bpp;
		iAttribute[iAttributes++] = WGL_ALPHA_BITS_ARB;					iAttribute[iAttributes++] = 4;
		iAttribute[iAttributes++] = WGL_DEPTH_BITS_ARB;					iAttribute[iAttributes++] = 16;
		iAttribute[iAttributes++] = WGL_STENCIL_BITS_ARB;				iAttribute[iAttributes++] = 8;
		iAttribute[iAttributes++] = WGL_DOUBLE_BUFFER_ARB;				iAttribute[iAttributes++] = GL_TRUE;
		iAttribute[iAttributes++] = WGL_STEREO_ARB;						iAttribute[iAttributes++] = info->stereo;
		if (info->multisample)
		{
			iAttribute[iAttributes++] = WGL_SAMPLE_BUFFERS_ARB;				iAttribute[iAttributes++] = GL_TRUE;
			iAttribute[iAttributes++] = WGL_SAMPLES_ARB,					iAttribute[iAttributes++] = info->multisample;						// Check For 4x Multisampling
		}
		if (info->srgb)
		{
			iAttribute[iAttributes++] = WGL_FRAMEBUFFER_SRGB_CAPABLE_ARB;	iAttribute[iAttributes++] = GL_TRUE;
		}
		iAttribute[iAttributes++] = 0;									iAttribute[iAttributes++] = 0;


		TRACE(("dbg: bSetupPixelFormat: attempting wglChoosePixelFormatARB (multisample 4)\n"));
		hDC = GetDC(mainwindow);

		valid = qwglChoosePixelFormatARB(hDC,iAttribute,fAttribute,1,&pixelformat,&numFormats);
/*		while ((!valid || numFormats < 1) && iAttribute[19] > 1)
		{	//failed, switch wgl_samples to 2
			iAttribute[19] /= 2;
			TRACE(("dbg: bSetupPixelFormat: attempting wglChoosePixelFormatARB (smaller multisample)\n"));
			valid = qwglChoosePixelFormatARB(hDC,iAttribute,fAttribute,1,&pixelformat,&numFormats);
		}
*/
		ReleaseDC(mainwindow, hDC);
		if (valid && numFormats > 0)
		{
			shouldforcepixelformat = true;
			forcepixelformat = pixelformat;
			return true;
		}
	}
	return false;
}

BYTE IntensityFromShifted(unsigned int index, unsigned int shift, unsigned int bits)
{
	unsigned int val;

	val = (index >> shift) & ((1 << bits) - 1);

	switch (bits)
	{
	case 1:
		val = val ? 0xFF : 0;
		break;
	case 2:
		val |= val << 2;
		val |= val << 4;
		break;
	case 3:
		val = val << (8 - bits);
		val |= val >> 3;
		break;
	case 4:
	case 5:
	case 6:
	case 7:
		val = val << (8 - bits);
		val |= val >> bits;
		break;
	case 8:
		break;
	default:
		return 0;
	}

	return val;
}

void FixPaletteInDescriptor(HDC hDC, PIXELFORMATDESCRIPTOR *pfd)
{
	LOGPALETTE *ppal;
	HPALETTE hpal;
	int idx, clrs;

	if (pfd->dwFlags & PFD_NEED_PALETTE)
	{
		clrs = 1 << pfd->cColorBits;

		ppal = Z_Malloc(sizeof(LOGPALETTE) + sizeof(PALETTEENTRY) * clrs);

		ppal->palVersion = 0x300;
		ppal->palNumEntries = clrs;

		for (idx = 0; idx < clrs; idx++)
		{
			ppal->palPalEntry[idx].peRed = IntensityFromShifted(idx, pfd->cRedShift, pfd->cRedBits);
			ppal->palPalEntry[idx].peGreen = IntensityFromShifted(idx, pfd->cGreenShift, pfd->cGreenBits);
			ppal->palPalEntry[idx].peBlue = IntensityFromShifted(idx, pfd->cBlueShift, pfd->cBlueBits);
			ppal->palPalEntry[idx].peFlags = 0;
		}

		hpal = CreatePalette(ppal);
		SelectPalette(hDC, hpal, FALSE);
		RealizePalette(hDC);
		Z_Free(ppal);
	}
}

BOOL bSetupPixelFormat(HDC hDC, rendererstate_t *info)
{
    PIXELFORMATDESCRIPTOR pfd = {
	sizeof(PIXELFORMATDESCRIPTOR),	// size of this pfd
	1,				// version number
	PFD_DRAW_TO_WINDOW 		// support window
	|  PFD_SUPPORT_OPENGL 	// support OpenGL
	|  PFD_DOUBLEBUFFER,		// double buffered
	PFD_TYPE_RGBA,			// RGBA type
	24,				// 24-bit color depth
	0, 0, 0, 0, 0, 0,		// color bits ignored
	0,				// no alpha buffer
	0,				// shift bit ignored
	0,				// no accumulation buffer
	0, 0, 0, 0, 			// accum bits ignored
#ifndef RTLIGHTS
	32,				// 32-bit z-buffer
	0,				// 0 stencil, don't need it unless we're using rtlights
#else
	24,				// 24-bit z-buffer
	8,				// stencil buffer
#endif
	0,				// no auxiliary buffer
	PFD_MAIN_PLANE,			// main layer
	0,				// reserved
	0, 0, 0				// layer masks ignored
    };

	TRACE(("dbg: bSetupPixelFormat: ChoosePixelFormat\n"));

	if (info->stereo)
		pfd.dwFlags |= PFD_STEREO;
	if (info->bpp == 15 || info->bpp == 16)
		pfd.cColorBits = 16;

	if (shouldforcepixelformat && qwglChoosePixelFormatARB)	//the extra && is paranoia
	{
		shouldforcepixelformat = false;
		currentpixelformat = forcepixelformat;
	}
	else
	{
		if ((currentpixelformat = qChoosePixelFormat(hDC, &pfd)))
		{
			TRACE(("dbg: ChoosePixelFormat 1: worked\n"));

			if (qSetPixelFormat(hDC, currentpixelformat, &pfd))
			{
				TRACE(("dbg: bSetupPixelFormat: we can use the stencil buffer. woot\n"));
				qDescribePixelFormat(hDC, currentpixelformat, sizeof(pfd), &pfd);
				FixPaletteInDescriptor(hDC, &pfd);

				if ((pfd.dwFlags & PFD_GENERIC_FORMAT) && !(pfd.dwFlags & PFD_GENERIC_ACCELERATED))
				{
					Con_Printf(CON_WARNING "WARNING: software-rendered opengl context\nPlease install appropriate graphics drivers, or try d3d rendering instead\n");
				}
				else if (pfd.dwFlags & PFD_SWAP_COPY)
					Con_Printf(CON_WARNING "WARNING: buffer swaps will use copy operations\n");
				return TRUE;
			}
		}
		TRACE(("dbg: ChoosePixelFormat 1: no stencil buffer for us\n"));

		pfd.cStencilBits = 0;

		if ( (currentpixelformat = qChoosePixelFormat(hDC, &pfd)) == 0 )
		{
			Con_Printf("bSetupPixelFormat: ChoosePixelFormat failed (%i)\n", (int)GetLastError());
			return FALSE;
		}
	}

	qDescribePixelFormat(hDC, currentpixelformat, sizeof(pfd), &pfd);

    if (qSetPixelFormat(hDC, currentpixelformat, &pfd) == FALSE)
    {
        Con_Printf("bSetupPixelFormat: SetPixelFormat failed (%i)\n", (int)GetLastError());
        return FALSE;
    }

	if ((pfd.dwFlags & PFD_GENERIC_FORMAT) && !(pfd.dwFlags & PFD_GENERIC_ACCELERATED))
	{
		Con_Printf(CON_WARNING "WARNING: software-rendered opengl context\nPlease install appropriate graphics drivers, or try d3d rendering instead\n");
	}
	else if (pfd.dwFlags & PFD_SWAP_COPY)
		Con_Printf(CON_WARNING "WARNING: buffer swaps will use copy operations\n");

	FixPaletteInDescriptor(hDC, &pfd);
    return TRUE;
}

/*
===================================================================

MAIN WINDOW

===================================================================
*/

/*
================
ClearAllStates
================
*/
void ClearAllStates (void)
{
	int		i;

// send an up event for each key, to make sure the server clears them all
	for (i=0 ; i<256 ; i++)
	{
		Key_Event (0, i, 0, false);
	}

	Key_ClearStates ();
	INS_ClearStates ();
}

qboolean GLAppActivate(BOOL fActive, BOOL minimize)
/****************************************************************************
*
* Function:     AppActivate
* Parameters:   fActive - True if app is activating
*
* Description:  If the application is activating, then swap the system
*               into SYSPAL_NOSTATIC mode so that our palettes will display
*               correctly.
*
****************************************************************************/
{
	static BOOL	sound_active;

	if (vid.activeapp == fActive && Minimized == minimize)
		return false;	//so windows doesn't crash us over and over again.

	vid.activeapp = fActive;// && (foregroundwindow==mainwindow);
	Minimized = minimize;

// enable/disable sound on focus gain/loss
	if (!vid.activeapp && sound_active)
	{
		S_BlockSound ();
		sound_active = false;
	}
	else if (vid.activeapp && !sound_active)
	{
		S_UnblockSound ();
		sound_active = true;
	}

	INS_UpdateGrabs(modestate != MS_WINDOWED, vid.activeapp);

	if (fActive)
	{
		if (modestate == MS_FULLDIB)
		{
			if (vid_canalttab && vid_wassuspended)
			{
				vid_wassuspended = false;
				ChangeDisplaySettings (&gdevmode, CDS_FULLSCREEN);
				ShowWindow(mainwindow, SW_SHOWNORMAL);

								// Fix for alt-tab bug in NVidia drivers
				MoveWindow (mainwindow, 0, 0, gdevmode.dmPelsWidth, gdevmode.dmPelsHeight, false);
			}
		}
		else if (modestate == MS_FULLWINDOW)
		{
			ShowWindow (mainwindow, SW_SHOWMAXIMIZED);
			UpdateWindow (mainwindow);
		}

		gammapending = 0.5;				//delayed gamma force
		Cvar_ForceCallback(&v_gamma);	//so the delay isn't so blatent when you have decent graphics drivers that don't break things.
	}

	if (!fActive)
	{
		if (modestate == MS_FULLDIB)
		{
			if (vid_canalttab)
			{
				ChangeDisplaySettings (NULL, 0);
				vid_wassuspended = true;
			}
		}

		Cvar_ForceCallback(&v_gamma);	//wham bam thanks.
	}

	return true;
}

#ifndef TWF_WANTPALM
typedef struct _TOUCHINPUT {
  LONG      x;
  LONG      y;
  HANDLE    hSource;
  DWORD     dwID;
  DWORD     dwFlags;
  DWORD     dwMask;
  DWORD     dwTime;
  ULONG_PTR dwExtraInfo;
  DWORD     cxContact;
  DWORD     cyContact;
} TOUCHINPUT, *PTOUCHINPUT;
DECLARE_HANDLE(HTOUCHINPUT);

#define WM_TOUCH					0x0240 
#define TOUCHINPUTMASKF_CONTACTAREA	0x0004
#define TOUCHEVENTF_DOWN			0x0002
#define TOUCHEVENTF_UP				0x0004
#define TWF_WANTPALM				0x00000002
#endif

static BOOL (WINAPI *pRegisterTouchWindow)(HWND hWnd, ULONG ulFlags);
static BOOL (WINAPI *pGetTouchInputInfo)(HTOUCHINPUT hTouchInput, UINT cInputs, PTOUCHINPUT pInputs, int cbSize);
static BOOL (WINAPI *pCloseTouchInputHandle)(HTOUCHINPUT hTouchInput);
static void Win_Touch_Init(HWND wnd)
{
	HMODULE lib;
	lib = LoadLibraryA("user32.dll");
	pRegisterTouchWindow = (void*)GetProcAddress(lib, "RegisterTouchWindow");
	pGetTouchInputInfo = (void*)GetProcAddress(lib, "GetTouchInputInfo");
	pCloseTouchInputHandle = (void*)GetProcAddress(lib, "CloseTouchInputHandle");

	if (pRegisterTouchWindow && pGetTouchInputInfo && pCloseTouchInputHandle)
		pRegisterTouchWindow(wnd, TWF_WANTPALM);
}
static void Win_Touch_Event(int points, HTOUCHINPUT ti)
{
	float sz;
	int i;
	TOUCHINPUT *inputs = malloc(points * sizeof(*inputs)), *input;
	if (inputs)
	{
		if (pGetTouchInputInfo(ti, points, inputs, sizeof(*inputs)))
		{
			for (i = 0, input = inputs; i < points; i++, input++)
			{
				int id = input->dwID+1;	//googling implies the id is generally a low 0-based index. I can't test this. the +1 ensures that mouselook is not broken by someone trying to use a touchscreen at the same time.
				if (input->dwMask & TOUCHINPUTMASKF_CONTACTAREA)
					sz = sqrt((input->cxContact*input->cxContact + input->cyContact*input->cyContact) / 10000.0);
				else
					sz = 0;

				//the web seems to imply that the ids should be low values, <16 or so. hurrah.

				//movement *then* buttons. this should ensure that the cursor is positioned correctly.
				IN_MouseMove(id, true, input->x/100.0f, input->y/100.0f, 0, sz);

				if (input->dwFlags & TOUCHEVENTF_DOWN)
					IN_KeyEvent(id, true, K_MOUSE1, 0);
				if (input->dwFlags & TOUCHEVENTF_UP)
					IN_KeyEvent(id, false, K_MOUSE1, 0);
			}
		}
		free(inputs);
	}

	pCloseTouchInputHandle(ti);
}

#ifdef WTHREAD
void MainThreadWndProc(void *ctx, void *data, size_t msg, size_t ex)
{
	switch(msg)
	{
	case WM_COPYDATA:
		Host_RunFile(data, ex, NULL);
		Z_Free(data);
		break;
	case WM_SIZE:
	case WM_MOVE:
		Cvar_ForceCallback(&vid_conautoscale);	//FIXME: thread
		break;
	case WM_KILLFOCUS:
		GLAppActivate(FALSE, Minimized);//FIXME: thread
		if (modestate == MS_FULLDIB)
			ShowWindow(mainwindow, SW_SHOWMINNOACTIVE);
		ClearAllStates ();	//FIXME: thread
		break;
	case WM_SETFOCUS:
		if (!GLAppActivate(TRUE, Minimized))//FIXME: thread
			break;
		ClearAllStates ();	//FIXME: thread
		break;
	}
}
#endif

/* main window procedure
due to moving the main window over to a different thread, we gain access to input timestamps (as well as video refreshes when dragging etc)
however, we have to tread carefully. the main/render thread will be running the whole time, and may trigger messages that we need to respond to _now_.
this means that the main and window thread cannot be allowed to contest any mutexes where anything but memory is touched before its unlocked.
(or in other words, we can't have the main thread near-perma-lock any mutexes that can be locked-to-sync here)
*/
LONG WINAPI GLMainWndProc (
	HWND	hWnd,
	UINT	uMsg,
	WPARAM	wParam,
	LPARAM	lParam)
{
	LONG	lRet = 1;
//	int		fActive, fMinimized;
	int 	temp;
	extern unsigned int uiWheelMessage;

	if ( uMsg == uiWheelMessage )
		uMsg = WM_MOUSEWHEEL;

	switch (uMsg)
	{
		case WM_COPYDATA:
			{
				COPYDATASTRUCT *cds = (COPYDATASTRUCT*)lParam;
#ifdef WTHREAD
				COM_AddWork(0, MainThreadWndProc, NULL, memcpy(Z_Malloc(cds->cbData), cds->lpData, cds->cbData), uMsg, cds->cbData);
#else
				Host_RunFile(cds->lpData, cds->cbData, NULL);
#endif
				lRet = 1;
			}
			break;
		case WM_KILLFOCUS:
#ifdef WTHREAD
			COM_AddWork(0, MainThreadWndProc, NULL, NULL, uMsg, 0);
#else
			GLAppActivate(FALSE, Minimized);//FIXME: thread
			if (modestate == MS_FULLDIB)
				ShowWindow(mainwindow, SW_SHOWMINNOACTIVE);
			ClearAllStates ();	//FIXME: thread
#endif
			break;
		case WM_SETFOCUS:
#ifdef WTHREAD
			COM_AddWork(0, MainThreadWndProc, NULL, NULL, uMsg, 0);
#else
			if (!GLAppActivate(TRUE, Minimized))//FIXME: thread
				break;
			ClearAllStates ();	//FIXME: thread
#endif
			break;

		case WM_TOUCH:
			Win_Touch_Event(LOWORD(wParam), (HTOUCHINPUT)lParam);
			return 0;	//return 0 if we handled it.

		case WM_CREATE:
			break;

		case WM_MOVE:
			VID_UpdateWindowStatus (hWnd);
#ifdef WTHREAD
			COM_AddWork(0, MainThreadWndProc, NULL, NULL, uMsg, 0);
#else
			Cvar_ForceCallback(&vid_conautoscale);
#endif
			break;

		case WM_KEYDOWN:
		case WM_SYSKEYDOWN:
			if (!vid_initializing)
				INS_TranslateKeyEvent(wParam, lParam, true, 0, false);
			break;

//		case WM_UNICHAR:
		case WM_DEADCHAR:
		case WM_SYSDEADCHAR:
		case WM_CHAR:
		case WM_SYSCHAR:
//			if (!vid_initializing)
//				INS_TranslateKeyEvent(wParam, lParam, true);
			break;

		case WM_KEYUP:
		case WM_SYSKEYUP:
			if (!vid_initializing)
				INS_TranslateKeyEvent(wParam, lParam, false, 0, false);
			break;

		case WM_MOUSEACTIVATE:
			lRet = MA_ACTIVATEANDEAT;
			break;

	// this is complicated because Win32 seems to pack multiple mouse events into
	// one update sometimes, so we always check all states and look for events
		case WM_LBUTTONDOWN:
		case WM_LBUTTONUP:
		case WM_RBUTTONDOWN:
		case WM_RBUTTONUP:
		case WM_MBUTTONDOWN:
		case WM_MBUTTONUP:
		case WM_MOUSEMOVE:
		case WM_XBUTTONDOWN:
		case WM_XBUTTONUP:
			temp = 0;

			if (wParam & MK_LBUTTON)
			{
				temp |= 1;
				if (sys_parentwindow && modestate == MS_WINDOWED)
					SetFocus(hWnd);
			}

			if (wParam & MK_RBUTTON)
				temp |= 2;

			if (wParam & MK_MBUTTON)
				temp |= 4;

			if (wParam & MK_XBUTTON1)
				temp |= 8;

			if (wParam & MK_XBUTTON2)
				temp |= 16;

			if (wParam & MK_XBUTTON3)
				temp |= 32;

			if (wParam & MK_XBUTTON4)
				temp |= 64;

			if (wParam & MK_XBUTTON5)
				temp |= 128;

			if (wParam & MK_XBUTTON6)
				temp |= 256;

			if (wParam & MK_XBUTTON7)
				temp |= 512;

			if (!vid_initializing)
				INS_MouseEvent (temp);	//FIXME: thread (halflife)

			break;

		// JACK: This is the mouse wheel with the Intellimouse
		// Its delta is either positive or neg, and we generate the proper
		// Event.
		case WM_MOUSEWHEEL:
			if (!vid_initializing)
			{
				if ((short) HIWORD(wParam&0xffffffff) > 0)
				{
					IN_KeyEvent(0, true, K_MWHEELUP, 0);
					IN_KeyEvent(0, false, K_MWHEELUP, 0);
				}
				else
				{
					IN_KeyEvent(0, true, K_MWHEELDOWN, 0);
					IN_KeyEvent(0, false, K_MWHEELDOWN, 0);
				}
			}
			break;

		case WM_INPUT:
			// raw input handling
			if (!vid_initializing)
			{
				INS_RawInput_Read((HANDLE)lParam);
				lRet = 0;
			}
			break;

		case WM_USER+4:
			PostQuitMessage(0);
			break;
		case WM_USER:
#ifndef NOMEDIA
			STT_Event();
#endif
			break;

		case WM_GETMINMAXINFO:
			{
				RECT windowrect;
				RECT clientrect;
				MINMAXINFO *mmi = (MINMAXINFO *) lParam;

				GetWindowRect (hWnd, &windowrect);
				GetClientRect (hWnd, &clientrect);

				mmi->ptMinTrackSize.x = 320 + ((windowrect.right - windowrect.left) - (clientrect.right - clientrect.left));
				mmi->ptMinTrackSize.y = 200 + ((windowrect.bottom - windowrect.top) - (clientrect.bottom - clientrect.top));
			}
			return 0;
		case WM_SIZE:
			vid.isminimized  = (wParam==SIZE_MINIMIZED);
			if (!vid_initializing)
			{
				VID_UpdateWindowStatus (hWnd);
#ifdef WTHREAD
				COM_AddWork(0, MainThreadWndProc, NULL, NULL, uMsg, 0);
#else
				Cvar_ForceCallback(&vid_conautoscale);
#endif
			}
			break;

		case WM_CLOSE:
			if (!vid_initializing)
				if (MessageBoxW (hWnd, L"Are you sure you want to quit?", L"Confirm Exit",
							MB_YESNO | MB_SETFOREGROUND | MB_ICONQUESTION) == IDYES)
				{
					Cbuf_AddText("\nquit\n", RESTRICT_LOCAL);
					wantquit = true;
				}

			break;

		case WM_ERASEBKGND:
			lRet = TRUE;
			break;
/*
		case WM_ACTIVATE:
//			fActive = LOWORD(wParam);
//			fMinimized = (BOOL) HIWORD(wParam);
//			if (!GLAppActivate(!(fActive == WA_INACTIVE), fMinimized))
				break;//so, urm, tell me microsoft, what changed?
			if (modestate == MS_FULLDIB)
				ShowWindow(hWnd, SW_SHOWNORMAL);

#ifdef WTHREAD
#else
		// fix the leftover Alt from any Alt-Tab or the like that switched us away
			ClearAllStates ();	//FIXME: thread

			Cvar_ForceCallback(&vid_conautoscale);	//FIXME: thread
#endif
			break;
*/
		case WM_DESTROY:
			break;
		case WM_SETCURSOR:
			//only use a custom cursor if the cursor is inside the client area
			switch(lParam&0xffff)
			{
			case 0:
				break;
			case HTCLIENT:
				if (hCustomCursor)	//custom cursor enabled
					SetCursor(hCustomCursor);
				else				//fallback on an arrow cursor, just so we have something visible at startup or so
					SetCursor(hArrowCursor);
				lRet = TRUE;
				break;
			default:
				lRet = DefWindowProcW (hWnd, uMsg, wParam, lParam);
				break;
			}
			break;

#ifndef WTHREAD
		case MM_MCINOTIFY:
			lRet = CDAudio_MessageHandler (hWnd, uMsg, wParam, lParam);	//FIXME: thread
			break;
#endif

		default:
			/* pass all unhandled messages to DefWindowProc */
			if (WinNT)
				lRet = DefWindowProcW (hWnd, uMsg, wParam, lParam);
			else
				lRet = DefWindowProcA (hWnd, uMsg, wParam, lParam);
			break;
	}

	/* return 1 if handled message, 0 if not */
	return lRet;
}


qboolean GLVID_Is8bit(void) {
	return is8bit;
}


void VID_Init8bitPalette(void)
{
#ifdef GL_USE8BITTEX
#ifdef GL_EXT_paletted_texture
#define GL_SHARED_TEXTURE_PALETTE_EXT 0x81FB

	// Check for 8bit Extensions and initialize them.
	int i;
	char thePalette[256*3];
	char *oldPalette, *newPalette;

	qglColorTableEXT = (void *)qwglGetProcAddress("glColorTableEXT");
	if (!qglColorTableEXT || !GL_CheckExtension("GL_EXT_shared_texture_palette") || COM_CheckParm("-no8bit"))
		return;

	Con_SafePrintf("8-bit GL extensions enabled.\n");
	qglEnable(GL_SHARED_TEXTURE_PALETTE_EXT);
	oldPalette = (char *) d_8to24rgbtable; //d_8to24table3dfx;
	newPalette = thePalette;
	for (i=0;i<256;i++)
	{
		*newPalette++ = *oldPalette++;
		*newPalette++ = *oldPalette++;
		*newPalette++ = *oldPalette++;
		oldPalette++;
	}
	qglColorTableEXT(GL_SHARED_TEXTURE_PALETTE_EXT, GL_RGB, 256, GL_RGB, GL_UNSIGNED_BYTE,
		(void *) thePalette);
	is8bit = TRUE;

#endif
#endif
}

void GLVID_DeInit (void)
{
	GLVID_Shutdown();
	vid.activeapp = false;

	Cvar_Unhook(&vid_vsync);
	Cvar_Unhook(&vid_wndalpha);
	Cmd_RemoveCommand("vid_recenter");

	if (WinNT)
		UnregisterClassW(WINDOW_CLASS_NAME_W, global_hInstance);
	else
		UnregisterClassA(WINDOW_CLASS_NAME_A, global_hInstance);
}

/*
===================
VID_Init
===================
*/
qboolean GLVID_Init (rendererstate_t *info, unsigned char *palette)
{
	extern int isPlugin;
//	qbyte	*ptmp;
	DEVMODE	devmode;

	memset(&devmode, 0, sizeof(devmode));

	hIcon = LoadIcon (global_hInstance, MAKEINTRESOURCE (IDI_ICON1));
	hArrowCursor = LoadCursor (NULL,IDC_ARROW);

	rf->VID_CreateCursor = WIN_CreateCursor;
	rf->VID_DestroyCursor = WIN_DestroyCursor;
	rf->VID_SetCursor = WIN_SetCursor;

	vid_initialized = false;
	vid_initializing = true;

	if (!GLVID_SetMode (info, palette))
	{
		VID_UnSetMode();
		return false;
	}

	// Check for 3DFX Extensions and initialize them.
	VID_Init8bitPalette();

	vid_canalttab = true;

	Cvar_Hook(&vid_vsync, VID_Wait_Override_Callback);
	Cvar_Hook(&vid_wndalpha, VID_WndAlpha_Override_Callback);

	Cmd_AddCommand("vid_recenter", GLVID_Recenter_f);

	if (isPlugin >= 2)
	{
		fprintf(stdout, "refocuswindow %"PRIxPTR"\n", mainwindow);
		fflush(stdout);
	}

	vid_initialized = true;
	vid_initializing = false;

	return true;
}
#endif