if (hDC && !ReleaseDC(hWnd,hDC))					// Are We Able To Release The DC
	{
		MessageBox(NULL,"Release Device Context Failed.","SHUTDOWN ERROR",MB_OK | MB_ICONINFORMATION);
		hDC=NULL;										// Set DC To NULL
	}

/*
 *		This Code Was Created By Jeff Molofee 2000
 *		A HUGE Thanks To Fredric Echols For Cleaning Up
 *		And Optimizing The Base Code, Making It More Flexible!
 *		If You've Found This Code Useful, Please Let Me Know.
 *		Visit My Site At nehe.gamedev.net
 * 		Conversion to Visual Studio.NET done by Grant James(Zeus)
 */

#include <windows.h>		// Header File For Windows
#include <gl\gl.h>			// Header File For The OpenGL32 Library
#include <gl\glu.h>			// Header File For The GLu32 Library
#include <gl\glaux.h>		// Header File For The Glaux Library

HDC			hDC=NULL;		// Private GDI Device Context
HGLRC		hRC=NULL;		// Permanent Rendering Context
HWND		hWnd=NULL;		// Holds Our Window Handle
HINSTANCE	hInstance;		// Holds The Instance Of The Application

bool	keys[256];			// Array Used For The Keyboard Routine
bool	active=TRUE;		// Window Active Flag Set To TRUE By Default
bool	fullscreen=TRUE;	// Fullscreen Flag Set To Fullscreen Mode By Default

LRESULT	CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);	// Declaration For WndProc

GLvoid ReSizeGLScene(GLsizei width, GLsizei height)		// Resize And Initialize The GL Window
{
	if (height==0)										// Prevent A Divide By Zero By
	{
		height=1;										// Making Height Equal One
	}

	glViewport(0,0,width,height);						// Reset The Current Viewport

	glMatrixMode(GL_PROJECTION);						// Select The Projection Matrix
	glLoadIdentity();									// Reset The Projection Matrix

	// Calculate The Aspect Ratio Of The Window
	gluPerspective(45.0f,(GLfloat)width/(GLfloat)height,0.1f,100.0f);

	glMatrixMode(GL_MODELVIEW);							// Select The Modelview Matrix
	glLoadIdentity();									// Reset The Modelview Matrix
}

int InitGL(GLvoid)										// All Setup For OpenGL Goes Here
{
	glShadeModel(GL_SMOOTH);							// Enable Smooth Shading
	glClearColor(0.0f, 0.0f, 0.0f, 0.5f);				// Black Background
	glClearDepth(1.0f);									// Depth Buffer Setup
	glEnable(GL_DEPTH_TEST);							// Enables Depth Testing
	glDepthFunc(GL_LEQUAL);								// The Type Of Depth Testing To Do
	glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);	// Really Nice Perspective Calculations
	return TRUE;										// Initialization Went OK
}

int DrawGLScene(GLvoid)									// Here's Where We Do All The Drawing
{
	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);	// Clear Screen And Depth Buffer
	glLoadIdentity();									// Reset The Current Modelview Matrix
	glTranslatef(-1.5f,0.0f,-6.0f);						// Move Left 1.5 Units And Into The Screen 6.0
	glBegin(GL_TRIANGLES);								// Drawing Using Triangles
		glVertex3f( 0.0f, 1.0f, 0.0f);					// Top
		glVertex3f(-1.0f,-1.0f, 0.0f);					// Bottom Left
		glVertex3f( 1.0f,-1.0f, 0.0f);					// Bottom Right
	glEnd();											// Finished Drawing The Triangle
	glTranslatef(3.0f,0.0f,0.0f);						// Move Right 3 Units
	glBegin(GL_QUADS);									// Draw A Quad
		glVertex3f(-1.0f, 1.0f, 0.0f);					// Top Left
		glVertex3f( 1.0f, 1.0f, 0.0f);					// Top Right
		glVertex3f( 1.0f,-1.0f, 0.0f);					// Bottom Right
		glVertex3f(-1.0f,-1.0f, 0.0f);					// Bottom Left
	glEnd();											// Done Drawing The Quad
	return TRUE;										// Keep Going
}

GLvoid KillGLWindow(GLvoid)								// Properly Kill The Window
{
	if (fullscreen)										// Are We In Fullscreen Mode?
	{
		ChangeDisplaySettings(NULL,0);					// If So Switch Back To The Desktop
		ShowCursor(TRUE);								// Show Mouse Pointer
	}

	if (hRC)											// Do We Have A Rendering Context?
	{
		if (!wglMakeCurrent(NULL,NULL))					// Are We Able To Release The DC And RC Contexts?
		{
			MessageBox(NULL,"Release Of DC And RC Failed.","SHUTDOWN ERROR",MB_OK | MB_ICONINFORMATION);
		}

		if (!wglDeleteContext(hRC))						// Are We Able To Delete The RC?
		{
			MessageBox(NULL,"Release Rendering Context Failed.","SHUTDOWN ERROR",MB_OK | MB_ICONINFORMATION);
		}
		hRC=NULL;										// Set RC To NULL
	}

	if (hWnd && !DestroyWindow(hWnd))					// Are We Able To Destroy The Window?
	{
		MessageBox(NULL,"Could Not Release hWnd.","SHUTDOWN ERROR",MB_OK | MB_ICONINFORMATION);
		hWnd=NULL;										// Set hWnd To NULL
	}

	if (!UnregisterClass("OpenGL",hInstance))			// Are We Able To Unregister Class
	{
		MessageBox(NULL,"Could Not Unregister Class.","SHUTDOWN ERROR",MB_OK | MB_ICONINFORMATION);
		hInstance=NULL;									// Set hInstance To NULL
	}
}

/*	This Code Creates Our OpenGL Window.  Parameters Are:					*
 *	title			- Title To Appear At The Top Of The Window				*
 *	width			- Width Of The GL Window Or Fullscreen Mode				*
 *	height			- Height Of The GL Window Or Fullscreen Mode			*
 *	bits			- Number Of Bits To Use For Color (8/16/24/32)			*
 *	fullscreenflag	- Use Fullscreen Mode (TRUE) Or Windowed Mode (FALSE)	*/

BOOL CreateGLWindow(char* title, int width, int height, int bits, bool fullscreenflag)
{
	GLuint		PixelFormat;			// Holds The Results After Searching For A Match
	WNDCLASS	wc;						// Windows Class Structure
	DWORD		dwExStyle;				// Window Extended Style
	DWORD		dwStyle;				// Window Style
	RECT		WindowRect;				// Grabs Rectangle Upper Left / Lower Right Values
	WindowRect.left=(long)0;			// Set Left Value To 0
	WindowRect.right=(long)width;		// Set Right Value To Requested Width
	WindowRect.top=(long)0;				// Set Top Value To 0
	WindowRect.bottom=(long)height;		// Set Bottom Value To Requested Height

	fullscreen=fullscreenflag;			// Set The Global Fullscreen Flag

	hInstance			= GetModuleHandle(NULL);				// Grab An Instance For Our Window
	wc.style			= CS_HREDRAW | CS_VREDRAW | CS_OWNDC;	// Redraw On Size, And Own DC For Window.
	wc.lpfnWndProc		= (WNDPROC) WndProc;					// WndProc Handles Messages
	wc.cbClsExtra		= 0;									// No Extra Window Data
	wc.cbWndExtra		= 0;									// No Extra Window Data
	wc.hInstance		= hInstance;							// Set The Instance
	wc.hIcon			= LoadIcon(NULL, IDI_WINLOGO);			// Load The Default Icon
	wc.hCursor			= LoadCursor(NULL, IDC_ARROW);			// Load The Arrow Pointer
	wc.hbrBackground	= NULL;									// No Background Required For GL
	wc.lpszMenuName		= NULL;									// We Don't Want A Menu
	wc.lpszClassName	= "OpenGL";								// Set The Class Name

	if (!RegisterClass(&wc))									// Attempt To Register The Window Class
	{
		MessageBox(NULL,"Failed To Register The Window Class.","ERROR",MB_OK|MB_ICONEXCLAMATION);
		return FALSE;											// Return FALSE
	}

	if (fullscreen)												// Attempt Fullscreen Mode?
	{
		DEVMODE dmScreenSettings;								// Device Mode
		memset(&dmScreenSettings,0,sizeof(dmScreenSettings));	// Makes Sure Memory's Cleared
		dmScreenSettings.dmSize=sizeof(dmScreenSettings);		// Size Of The Devmode Structure
		dmScreenSettings.dmPelsWidth	= width;				// Selected Screen Width
		dmScreenSettings.dmPelsHeight	= height;				// Selected Screen Height
		dmScreenSettings.dmBitsPerPel	= bits;					// Selected Bits Per Pixel
		dmScreenSettings.dmFields=DM_BITSPERPEL|DM_PELSWIDTH|DM_PELSHEIGHT;

		// Try To Set Selected Mode And Get Results.  NOTE: CDS_FULLSCREEN Gets Rid Of Start Bar.
		if (ChangeDisplaySettings(&dmScreenSettings,CDS_FULLSCREEN)!=DISP_CHANGE_SUCCESSFUL)
		{
			// If The Mode Fails, Offer Two Options.  Quit Or Use Windowed Mode.
			if (MessageBox(NULL,"The Requested Fullscreen Mode Is Not Supported By\nYour Video Card. Use Windowed Mode Instead?","NeHe GL",MB_YESNO|MB_ICONEXCLAMATION)==IDYES)
			{
				fullscreen=FALSE;		// Windowed Mode Selected.  Fullscreen = FALSE
			}
			else
			{
				// Pop Up A Message Box Letting User Know The Program Is Closing.
				MessageBox(NULL,"Program Will Now Close.","ERROR",MB_OK|MB_ICONSTOP);
				return FALSE;									// Return FALSE
			}
		}
	}

	if (fullscreen)												// Are We Still In Fullscreen Mode?
	{
		dwExStyle=WS_EX_APPWINDOW;								// Window Extended Style
		dwStyle=WS_POPUP;										// Windows Style
		ShowCursor(FALSE);										// Hide Mouse Pointer
	}
	else
	{
		dwExStyle=WS_EX_APPWINDOW | WS_EX_WINDOWEDGE;			// Window Extended Style
		dwStyle=WS_OVERLAPPEDWINDOW;							// Windows Style
	}

	AdjustWindowRectEx(&WindowRect, dwStyle, FALSE, dwExStyle);		// Adjust Window To True Requested Size

	// Create The Window
	if (!(hWnd=CreateWindowEx(	dwExStyle,							// Extended Style For The Window
								"OpenGL",							// Class Name
								title,								// Window Title
								dwStyle |							// Defined Window Style
								WS_CLIPSIBLINGS |					// Required Window Style
								WS_CLIPCHILDREN,					// Required Window Style
								0, 0,								// Window Position
								WindowRect.right-WindowRect.left,	// Calculate Window Width
								WindowRect.bottom-WindowRect.top,	// Calculate Window Height
								NULL,								// No Parent Window
								NULL,								// No Menu
								hInstance,							// Instance
								NULL)))								// Dont Pass Anything To WM_CREATE
	{
		KillGLWindow();								// Reset The Display
		MessageBox(NULL,"Window Creation Error.","ERROR",MB_OK|MB_ICONEXCLAMATION);
		return FALSE;								// Return FALSE
	}

	static	PIXELFORMATDESCRIPTOR pfd=				// pfd Tells Windows How We Want Things To Be
	{
		sizeof(PIXELFORMATDESCRIPTOR),				// Size Of This Pixel Format Descriptor
		1,											// Version Number
		PFD_DRAW_TO_WINDOW |						// Format Must Support Window
		PFD_SUPPORT_OPENGL |						// Format Must Support OpenGL
		PFD_DOUBLEBUFFER,							// Must Support Double Buffering
		PFD_TYPE_RGBA,								// Request An RGBA Format
		bits,										// Select Our 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,									// Accumulation Bits Ignored
		16,											// 16Bit Z-Buffer (Depth Buffer)
		0,											// No Stencil Buffer
		0,											// No Auxiliary Buffer
		PFD_MAIN_PLANE,								// Main Drawing Layer
		0,											// Reserved
		0, 0, 0										// Layer Masks Ignored
	};

	if (!(hDC=GetDC(hWnd)))							// Did We Get A Device Context?
	{
		KillGLWindow();								// Reset The Display
		MessageBox(NULL,"Can't Create A GL Device Context.","ERROR",MB_OK|MB_ICONEXCLAMATION);
		return FALSE;								// Return FALSE
	}

	if (!(PixelFormat=ChoosePixelFormat(hDC,&pfd)))	// Did Windows Find A Matching Pixel Format?
	{
		KillGLWindow();								// Reset The Display
		MessageBox(NULL,"Can't Find A Suitable PixelFormat.","ERROR",MB_OK|MB_ICONEXCLAMATION);
		return FALSE;								// Return FALSE
	}

	if(!SetPixelFormat(hDC,PixelFormat,&pfd))		// Are We Able To Set The Pixel Format?
	{
		KillGLWindow();								// Reset The Display
		MessageBox(NULL,"Can't Set The PixelFormat.","ERROR",MB_OK|MB_ICONEXCLAMATION);
		return FALSE;								// Return FALSE
	}

	if (!(hRC=wglCreateContext(hDC)))				// Are We Able To Get A Rendering Context?
	{
		KillGLWindow();								// Reset The Display
		MessageBox(NULL,"Can't Create A GL Rendering Context.","ERROR",MB_OK|MB_ICONEXCLAMATION);
		return FALSE;								// Return FALSE
	}

	if(!wglMakeCurrent(hDC,hRC))					// Try To Activate The Rendering Context
	{
		KillGLWindow();								// Reset The Display
		MessageBox(NULL,"Can't Activate The GL Rendering Context.","ERROR",MB_OK|MB_ICONEXCLAMATION);
		return FALSE;								// Return FALSE
	}

	ShowWindow(hWnd,SW_SHOW);						// Show The Window
	SetForegroundWindow(hWnd);						// Slightly Higher Priority
	SetFocus(hWnd);									// Sets Keyboard Focus To The Window
	ReSizeGLScene(width, height);					// Set Up Our Perspective GL Screen

	if (!InitGL())									// Initialize Our Newly Created GL Window
	{
		KillGLWindow();								// Reset The Display
		MessageBox(NULL,"Initialization Failed.","ERROR",MB_OK|MB_ICONEXCLAMATION);
		return FALSE;								// Return FALSE
	}

	return TRUE;									// Success
}

LRESULT CALLBACK WndProc(	HWND	hWnd,			// Handle For This Window
							UINT	uMsg,			// Message For This Window
							WPARAM	wParam,			// Additional Message Information
							LPARAM	lParam)			// Additional Message Information
{
	switch (uMsg)									// Check For Windows Messages
	{
		case WM_ACTIVATE:							// Watch For Window Activate Message
		{
			if (!HIWORD(wParam))					// Check Minimization State
			{
				active=TRUE;						// Program Is Active
			}
			else
			{
				active=FALSE;						// Program Is No Longer Active
			}

			return 0;								// Return To The Message Loop
		}

		case WM_SYSCOMMAND:
		{
			switch (wParam)
			{
				case SC_SCREENSAVE:
				case SC_MONITORPOWER:
					return 0;
			}
			break;
		}

		case WM_CLOSE:								// Did We Receive A Close Message?
		{
			PostQuitMessage(0);						// Send A Quit Message
			return 0;								// Jump Back
		}

		case WM_KEYDOWN:							// Is A Key Being Held Down?
		{
			keys[wParam] = TRUE;					// If So, Mark It As TRUE
			return 0;								// Jump Back
		}

		case WM_KEYUP:								// Has A Key Been Released?
		{
			keys[wParam] = FALSE;					// If So, Mark It As FALSE
			return 0;								// Jump Back
		}

		case WM_SIZE:								// Resize The OpenGL Window
		{
			ReSizeGLScene(LOWORD(lParam),HIWORD(lParam));  // LoWord=Width, HiWord=Height
			return 0;								// Jump Back
		}
	}

	// Pass All Unhandled Messages To DefWindowProc
	return DefWindowProc(hWnd,uMsg,wParam,lParam);
}

int WINAPI WinMain(	HINSTANCE	hInstance,			// Instance
					HINSTANCE	hPrevInstance,		// Previous Instance
					LPSTR		lpCmdLine,			// Command Line Parameters
					int			nCmdShow)			// Window Show State
{
	MSG		msg;									// Windows Message Structure
	BOOL	done=FALSE;								// Bool Variable To Exit Loop

	// Ask The User Which Screen Mode They Prefer
	if (MessageBox(NULL,"Would You Like To Run In Fullscreen Mode?", "Start FullScreen?",MB_YESNO|MB_ICONQUESTION)==IDNO)
	{
		fullscreen=FALSE;							// Windowed Mode
	}

	// Create Our OpenGL Window
	if (!CreateGLWindow("NeHe's First Polygon Tutorial",640,480,16,fullscreen))
	{
		return 0;									// Quit If Window Was Not Created
	}

	while(!done)									// Loop That Runs While done=FALSE
	{
		if (PeekMessage(&msg,NULL,0,0,PM_REMOVE))	// Is There A Message Waiting?
		{
			if (msg.message==WM_QUIT)				// Have We Received A Quit Message?
			{
				done=TRUE;							// If So done=TRUE
			}
			else									// If Not, Deal With Window Messages
			{
				TranslateMessage(&msg);				// Translate The Message
				DispatchMessage(&msg);				// Dispatch The Message
			}
		}
		else										// If There Are No Messages
		{
			// Draw The Scene.  Watch For ESC Key And Quit Messages From DrawGLScene()
			if ((active && !DrawGLScene()) || keys[VK_ESCAPE])	// Active?  Was There A Quit Received?
			{
				done=TRUE;							// ESC or DrawGLScene Signalled A Quit
			}
			else									// Not Time To Quit, Update Screen
			{
				SwapBuffers(hDC);					// Swap Buffers (Double Buffering)
			}

			if (keys[VK_F1])						// Is F1 Being Pressed?
			{
				keys[VK_F1]=FALSE;					// If So Make Key FALSE
				KillGLWindow();						// Kill Our Current Window
				fullscreen=!fullscreen;				// Toggle Fullscreen / Windowed Mode
				// Recreate Our OpenGL Window
				if (!CreateGLWindow("NeHe's First Polygon Tutorial",640,480,16,fullscreen))
				{
					return 0;						// Quit If Window Was Not Created
				}
			}
		}
	}

	// Shutdown
	KillGLWindow();									// Kill The Window
	return (msg.wParam);							// Exit The Program
}


switch (wParam)
			{
				case SC_SCREENSAVE:
				case SC_MONITORPOWER:
					return 0;
			}

/*
 *		This Code Was Created By Jeff Molofee 2000
 *		A HUGE Thanks To Fredric Echols For Cleaning Up
 *		And Optimizing The Base Code, Making It More Flexible!
 *		If You've Found This Code Useful, Please Let Me Know.
 *		Visit My Site At nehe.gamedev.net
 * 		Conversion to Visual Studio.NET done by Grant James(Zeus)
 */

#include <windows.h>		// Header File For Windows
#include <gl\gl.h>			// Header File For The OpenGL32 Library
#include <gl\glu.h>			// Header File For The GLu32 Library
#include <gl\glaux.h>		// Header File For The Glaux Library

HDC			hDC=NULL;		// Private GDI Device Context
HGLRC		hRC=NULL;		// Permanent Rendering Context
HWND		hWnd=NULL;		// Holds Our Window Handle
HINSTANCE	hInstance;		// Holds The Instance Of The Application

bool	keys[256];			// Array Used For The Keyboard Routine
bool	active=TRUE;		// Window Active Flag Set To TRUE By Default
bool	fullscreen=TRUE;	// Fullscreen Flag Set To Fullscreen Mode By Default

LRESULT	CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);	// Declaration For WndProc

GLvoid ReSizeGLScene(GLsizei width, GLsizei height)		// Resize And Initialize The GL Window
{
	if (height==0)										// Prevent A Divide By Zero By
	{
		height=1;										// Making Height Equal One
	}

	glViewport(0,0,width,height);						// Reset The Current Viewport

	glMatrixMode(GL_PROJECTION);						// Select The Projection Matrix
	glLoadIdentity();									// Reset The Projection Matrix

	// Calculate The Aspect Ratio Of The Window
	gluPerspective(45.0f,(GLfloat)width/(GLfloat)height,0.1f,100.0f);

	glMatrixMode(GL_MODELVIEW);							// Select The Modelview Matrix
	glLoadIdentity();									// Reset The Modelview Matrix
}

int InitGL(GLvoid)										// All Setup For OpenGL Goes Here
{
	glShadeModel(GL_SMOOTH);							// Enable Smooth Shading
	glClearColor(0.0f, 0.0f, 0.0f, 0.5f);				// Black Background
	glClearDepth(1.0f);									// Depth Buffer Setup
	glEnable(GL_DEPTH_TEST);							// Enables Depth Testing
	glDepthFunc(GL_LEQUAL);								// The Type Of Depth Testing To Do
	glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);	// Really Nice Perspective Calculations
	return TRUE;										// Initialization Went OK
}

int DrawGLScene(GLvoid)									// Here's Where We Do All The Drawing
{
	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);	// Clear Screen And Depth Buffer
	glLoadIdentity();									// Reset The Current Modelview Matrix
	glTranslatef(-1.5f,0.0f,-6.0f);						// Move Left 1.5 Units And Into The Screen 6.0
	glBegin(GL_TRIANGLES);								// Drawing Using Triangles
		glVertex3f( 0.0f, 1.0f, 0.0f);					// Top
		glVertex3f(-1.0f,-1.0f, 0.0f);					// Bottom Left
		glVertex3f( 1.0f,-1.0f, 0.0f);					// Bottom Right
	glEnd();											// Finished Drawing The Triangle
	glTranslatef(3.0f,0.0f,0.0f);						// Move Right 3 Units
	glBegin(GL_QUADS);									// Draw A Quad
		glVertex3f(-1.0f, 1.0f, 0.0f);					// Top Left
		glVertex3f( 1.0f, 1.0f, 0.0f);					// Top Right
		glVertex3f( 1.0f,-1.0f, 0.0f);					// Bottom Right
		glVertex3f(-1.0f,-1.0f, 0.0f);					// Bottom Left
	glEnd();											// Done Drawing The Quad
	return TRUE;										// Keep Going
}

GLvoid KillGLWindow(GLvoid)								// Properly Kill The Window
{
	if (fullscreen)										// Are We In Fullscreen Mode?
	{
		ChangeDisplaySettings(NULL,0);					// If So Switch Back To The Desktop
		ShowCursor(TRUE);								// Show Mouse Pointer
	}

	if (hRC)											// Do We Have A Rendering Context?
	{
		if (!wglMakeCurrent(NULL,NULL))					// Are We Able To Release The DC And RC Contexts?
		{
			MessageBox(NULL,"Release Of DC And RC Failed.","SHUTDOWN ERROR",MB_OK | MB_ICONINFORMATION);
		}

		if (!wglDeleteContext(hRC))						// Are We Able To Delete The RC?
		{
			MessageBox(NULL,"Release Rendering Context Failed.","SHUTDOWN ERROR",MB_OK | MB_ICONINFORMATION);
		}
		hRC=NULL;										// Set RC To NULL
	}

	if (hDC && !ReleaseDC(hWnd,hDC))					// Are We Able To Release The DC
	{
		MessageBox(NULL,"Release Device Context Failed.","SHUTDOWN ERROR",MB_OK | MB_ICONINFORMATION);
		hDC=NULL;										// Set DC To NULL
	}

	if (hWnd && !DestroyWindow(hWnd))					// Are We Able To Destroy The Window?
	{
		MessageBox(NULL,"Could Not Release hWnd.","SHUTDOWN ERROR",MB_OK | MB_ICONINFORMATION);
		hWnd=NULL;										// Set hWnd To NULL
	}

	if (!UnregisterClass("OpenGL",hInstance))			// Are We Able To Unregister Class
	{
		MessageBox(NULL,"Could Not Unregister Class.","SHUTDOWN ERROR",MB_OK | MB_ICONINFORMATION);
		hInstance=NULL;									// Set hInstance To NULL
	}
}

/*	This Code Creates Our OpenGL Window.  Parameters Are:					*
 *	title			- Title To Appear At The Top Of The Window				*
 *	width			- Width Of The GL Window Or Fullscreen Mode				*
 *	height			- Height Of The GL Window Or Fullscreen Mode			*
 *	bits			- Number Of Bits To Use For Color (8/16/24/32)			*
 *	fullscreenflag	- Use Fullscreen Mode (TRUE) Or Windowed Mode (FALSE)	*/

BOOL CreateGLWindow(char* title, int width, int height, int bits, bool fullscreenflag)
{
	GLuint		PixelFormat;			// Holds The Results After Searching For A Match
	WNDCLASS	wc;						// Windows Class Structure
	DWORD		dwExStyle;				// Window Extended Style
	DWORD		dwStyle;				// Window Style
	RECT		WindowRect;				// Grabs Rectangle Upper Left / Lower Right Values
	WindowRect.left=(long)0;			// Set Left Value To 0
	WindowRect.right=(long)width;		// Set Right Value To Requested Width
	WindowRect.top=(long)0;				// Set Top Value To 0
	WindowRect.bottom=(long)height;		// Set Bottom Value To Requested Height

	fullscreen=fullscreenflag;			// Set The Global Fullscreen Flag

	hInstance			= GetModuleHandle(NULL);				// Grab An Instance For Our Window
	wc.style			= CS_HREDRAW | CS_VREDRAW | CS_OWNDC;	// Redraw On Size, And Own DC For Window.
	wc.lpfnWndProc		= (WNDPROC) WndProc;					// WndProc Handles Messages
	wc.cbClsExtra		= 0;									// No Extra Window Data
	wc.cbWndExtra		= 0;									// No Extra Window Data
	wc.hInstance		= hInstance;							// Set The Instance
	wc.hIcon			= LoadIcon(NULL, IDI_WINLOGO);			// Load The Default Icon
	wc.hCursor			= LoadCursor(NULL, IDC_ARROW);			// Load The Arrow Pointer
	wc.hbrBackground	= NULL;									// No Background Required For GL
	wc.lpszMenuName		= NULL;									// We Don't Want A Menu
	wc.lpszClassName	= "OpenGL";								// Set The Class Name

	if (!RegisterClass(&wc))									// Attempt To Register The Window Class
	{
		MessageBox(NULL,"Failed To Register The Window Class.","ERROR",MB_OK|MB_ICONEXCLAMATION);
		return FALSE;											// Return FALSE
	}

	if (fullscreen)												// Attempt Fullscreen Mode?
	{
		DEVMODE dmScreenSettings;								// Device Mode
		memset(&dmScreenSettings,0,sizeof(dmScreenSettings));	// Makes Sure Memory's Cleared
		dmScreenSettings.dmSize=sizeof(dmScreenSettings);		// Size Of The Devmode Structure
		dmScreenSettings.dmPelsWidth	= width;				// Selected Screen Width
		dmScreenSettings.dmPelsHeight	= height;				// Selected Screen Height
		dmScreenSettings.dmBitsPerPel	= bits;					// Selected Bits Per Pixel
		dmScreenSettings.dmFields=DM_BITSPERPEL|DM_PELSWIDTH|DM_PELSHEIGHT;

		// Try To Set Selected Mode And Get Results.  NOTE: CDS_FULLSCREEN Gets Rid Of Start Bar.
		if (ChangeDisplaySettings(&dmScreenSettings,CDS_FULLSCREEN)!=DISP_CHANGE_SUCCESSFUL)
		{
			// If The Mode Fails, Offer Two Options.  Quit Or Use Windowed Mode.
			if (MessageBox(NULL,"The Requested Fullscreen Mode Is Not Supported By\nYour Video Card. Use Windowed Mode Instead?","NeHe GL",MB_YESNO|MB_ICONEXCLAMATION)==IDYES)
			{
				fullscreen=FALSE;		// Windowed Mode Selected.  Fullscreen = FALSE
			}
			else
			{
				// Pop Up A Message Box Letting User Know The Program Is Closing.
				MessageBox(NULL,"Program Will Now Close.","ERROR",MB_OK|MB_ICONSTOP);
				return FALSE;									// Return FALSE
			}
		}
	}

	if (fullscreen)												// Are We Still In Fullscreen Mode?
	{
		dwExStyle=WS_EX_APPWINDOW;								// Window Extended Style
		dwStyle=WS_POPUP;										// Windows Style
		ShowCursor(FALSE);										// Hide Mouse Pointer
	}
	else
	{
		dwExStyle=WS_EX_APPWINDOW | WS_EX_WINDOWEDGE;			// Window Extended Style
		dwStyle=WS_OVERLAPPEDWINDOW;							// Windows Style
	}

	AdjustWindowRectEx(&WindowRect, dwStyle, FALSE, dwExStyle);		// Adjust Window To True Requested Size

	// Create The Window
	if (!(hWnd=CreateWindowEx(	dwExStyle,							// Extended Style For The Window
								"OpenGL",							// Class Name
								title,								// Window Title
								dwStyle |							// Defined Window Style
								WS_CLIPSIBLINGS |					// Required Window Style
								WS_CLIPCHILDREN,					// Required Window Style
								0, 0,								// Window Position
								WindowRect.right-WindowRect.left,	// Calculate Window Width
								WindowRect.bottom-WindowRect.top,	// Calculate Window Height
								NULL,								// No Parent Window
								NULL,								// No Menu
								hInstance,							// Instance
								NULL)))								// Dont Pass Anything To WM_CREATE
	{
		KillGLWindow();								// Reset The Display
		MessageBox(NULL,"Window Creation Error.","ERROR",MB_OK|MB_ICONEXCLAMATION);
		return FALSE;								// Return FALSE
	}

	static	PIXELFORMATDESCRIPTOR pfd=				// pfd Tells Windows How We Want Things To Be
	{
		sizeof(PIXELFORMATDESCRIPTOR),				// Size Of This Pixel Format Descriptor
		1,											// Version Number
		PFD_DRAW_TO_WINDOW |						// Format Must Support Window
		PFD_SUPPORT_OPENGL |						// Format Must Support OpenGL
		PFD_DOUBLEBUFFER,							// Must Support Double Buffering
		PFD_TYPE_RGBA,								// Request An RGBA Format
		bits,										// Select Our 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,									// Accumulation Bits Ignored
		16,											// 16Bit Z-Buffer (Depth Buffer)
		0,											// No Stencil Buffer
		0,											// No Auxiliary Buffer
		PFD_MAIN_PLANE,								// Main Drawing Layer
		0,											// Reserved
		0, 0, 0										// Layer Masks Ignored
	};

	if (!(hDC=GetDC(hWnd)))							// Did We Get A Device Context?
	{
		KillGLWindow();								// Reset The Display
		MessageBox(NULL,"Can't Create A GL Device Context.","ERROR",MB_OK|MB_ICONEXCLAMATION);
		return FALSE;								// Return FALSE
	}

	if (!(PixelFormat=ChoosePixelFormat(hDC,&pfd)))	// Did Windows Find A Matching Pixel Format?
	{
		KillGLWindow();								// Reset The Display
		MessageBox(NULL,"Can't Find A Suitable PixelFormat.","ERROR",MB_OK|MB_ICONEXCLAMATION);
		return FALSE;								// Return FALSE
	}

	if(!SetPixelFormat(hDC,PixelFormat,&pfd))		// Are We Able To Set The Pixel Format?
	{
		KillGLWindow();								// Reset The Display
		MessageBox(NULL,"Can't Set The PixelFormat.","ERROR",MB_OK|MB_ICONEXCLAMATION);
		return FALSE;								// Return FALSE
	}

	if (!(hRC=wglCreateContext(hDC)))				// Are We Able To Get A Rendering Context?
	{
		KillGLWindow();								// Reset The Display
		MessageBox(NULL,"Can't Create A GL Rendering Context.","ERROR",MB_OK|MB_ICONEXCLAMATION);
		return FALSE;								// Return FALSE
	}

	if(!wglMakeCurrent(hDC,hRC))					// Try To Activate The Rendering Context
	{
		KillGLWindow();								// Reset The Display
		MessageBox(NULL,"Can't Activate The GL Rendering Context.","ERROR",MB_OK|MB_ICONEXCLAMATION);
		return FALSE;								// Return FALSE
	}

	ShowWindow(hWnd,SW_SHOW);						// Show The Window
	SetForegroundWindow(hWnd);						// Slightly Higher Priority
	SetFocus(hWnd);									// Sets Keyboard Focus To The Window
	ReSizeGLScene(width, height);					// Set Up Our Perspective GL Screen

	if (!InitGL())									// Initialize Our Newly Created GL Window
	{
		KillGLWindow();								// Reset The Display
		MessageBox(NULL,"Initialization Failed.","ERROR",MB_OK|MB_ICONEXCLAMATION);
		return FALSE;								// Return FALSE
	}

	return TRUE;									// Success
}

LRESULT CALLBACK WndProc(	HWND	hWnd,			// Handle For This Window
							UINT	uMsg,			// Message For This Window
							WPARAM	wParam,			// Additional Message Information
							LPARAM	lParam)			// Additional Message Information
{
	switch (uMsg)									// Check For Windows Messages
	{
		case WM_ACTIVATE:							// Watch For Window Activate Message
		{
			if (!HIWORD(wParam))					// Check Minimization State
			{
				active=TRUE;						// Program Is Active
			}
			else
			{
				active=FALSE;						// Program Is No Longer Active
			}

			return 0;								// Return To The Message Loop
		}

		case WM_SYSCOMMAND:
		{

			break;
		}

		case WM_CLOSE:								// Did We Receive A Close Message?
		{
			PostQuitMessage(0);						// Send A Quit Message
			return 0;								// Jump Back
		}

		case WM_KEYDOWN:							// Is A Key Being Held Down?
		{
			keys[wParam] = TRUE;					// If So, Mark It As TRUE
			return 0;								// Jump Back
		}

		case WM_KEYUP:								// Has A Key Been Released?
		{
			keys[wParam] = FALSE;					// If So, Mark It As FALSE
			return 0;								// Jump Back
		}

		case WM_SIZE:								// Resize The OpenGL Window
		{
			ReSizeGLScene(LOWORD(lParam),HIWORD(lParam));  // LoWord=Width, HiWord=Height
			return 0;								// Jump Back
		}
	}

	// Pass All Unhandled Messages To DefWindowProc
	return DefWindowProc(hWnd,uMsg,wParam,lParam);
}

int WINAPI WinMain(	HINSTANCE	hInstance,			// Instance
					HINSTANCE	hPrevInstance,		// Previous Instance
					LPSTR		lpCmdLine,			// Command Line Parameters
					int			nCmdShow)			// Window Show State
{
	MSG		msg;									// Windows Message Structure
	BOOL	done=FALSE;								// Bool Variable To Exit Loop

	// Ask The User Which Screen Mode They Prefer
	if (MessageBox(NULL,"Would You Like To Run In Fullscreen Mode?", "Start FullScreen?",MB_YESNO|MB_ICONQUESTION)==IDNO)
	{
		fullscreen=FALSE;							// Windowed Mode
	}

	// Create Our OpenGL Window
	if (!CreateGLWindow("NeHe's First Polygon Tutorial",640,480,16,fullscreen))
	{
		return 0;									// Quit If Window Was Not Created
	}

	while(!done)									// Loop That Runs While done=FALSE
	{
		if (PeekMessage(&msg,NULL,0,0,PM_REMOVE))	// Is There A Message Waiting?
		{
			if (msg.message==WM_QUIT)				// Have We Received A Quit Message?
			{
				done=TRUE;							// If So done=TRUE
			}
			else									// If Not, Deal With Window Messages
			{
				TranslateMessage(&msg);				// Translate The Message
				DispatchMessage(&msg);				// Dispatch The Message
			}
		}
		else										// If There Are No Messages
		{
			// Draw The Scene.  Watch For ESC Key And Quit Messages From DrawGLScene()
			if ((active && !DrawGLScene()) || keys[VK_ESCAPE])	// Active?  Was There A Quit Received?
			{
				done=TRUE;							// ESC or DrawGLScene Signalled A Quit
			}
			else									// Not Time To Quit, Update Screen
			{
				SwapBuffers(hDC);					// Swap Buffers (Double Buffering)
			}

			if (keys[VK_F1])						// Is F1 Being Pressed?
			{
				keys[VK_F1]=FALSE;					// If So Make Key FALSE
				KillGLWindow();						// Kill Our Current Window
				fullscreen=!fullscreen;				// Toggle Fullscreen / Windowed Mode
				// Recreate Our OpenGL Window
				if (!CreateGLWindow("NeHe's First Polygon Tutorial",640,480,16,fullscreen))
				{
					return 0;						// Quit If Window Was Not Created
				}
			}
		}
	}

	// Shutdown
	KillGLWindow();									// Kill The Window
	return (msg.wParam);							// Exit The Program
}


/*
 *		This Code Was Created By Jeff Molofee 2000
 *		A HUGE Thanks To Fredric Echols For Cleaning Up
 *		And Optimizing The Base Code, Making It More Flexible!
 *		If You've Found This Code Useful, Please Let Me Know.
 *		Visit My Site At nehe.gamedev.net
 * 		Conversion to Visual Studio.NET done by Grant James(Zeus)
 */

#include <windows.h>		// Header File For Windows
#include <gl\gl.h>			// Header File For The OpenGL32 Library
#include <gl\glu.h>			// Header File For The GLu32 Library
#include <gl\glaux.h>		// Header File For The Glaux Library

HDC			hDC=NULL;		// Private GDI Device Context
HGLRC		hRC=NULL;		// Permanent Rendering Context
HWND		hWnd=NULL;		// Holds Our Window Handle
HINSTANCE	hInstance;		// Holds The Instance Of The Application

bool	keys[256];			// Array Used For The Keyboard Routine
bool	active=TRUE;		// Window Active Flag Set To TRUE By Default
bool	fullscreen=TRUE;	// Fullscreen Flag Set To Fullscreen Mode By Default

LRESULT	CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);	// Declaration For WndProc

GLvoid ReSizeGLScene(GLsizei width, GLsizei height)		// Resize And Initialize The GL Window
{
	if (height==0)										// Prevent A Divide By Zero By
	{
		height=1;										// Making Height Equal One
	}

	glViewport(0,0,width,height);						// Reset The Current Viewport

	glMatrixMode(GL_PROJECTION);						// Select The Projection Matrix
	glLoadIdentity();									// Reset The Projection Matrix

	// Calculate The Aspect Ratio Of The Window
	gluPerspective(45.0f,(GLfloat)width/(GLfloat)height,0.1f,100.0f);

	glMatrixMode(GL_MODELVIEW);							// Select The Modelview Matrix
	glLoadIdentity();									// Reset The Modelview Matrix
}

int InitGL(GLvoid)										// All Setup For OpenGL Goes Here
{
	glShadeModel(GL_SMOOTH);							// Enable Smooth Shading
	glClearColor(0.0f, 0.0f, 0.0f, 0.5f);				// Black Background
	glClearDepth(1.0f);									// Depth Buffer Setup
	glEnable(GL_DEPTH_TEST);							// Enables Depth Testing
	glDepthFunc(GL_LEQUAL);								// The Type Of Depth Testing To Do
	glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);	// Really Nice Perspective Calculations
	return TRUE;										// Initialization Went OK
}

int DrawGLScene(GLvoid)									// Here's Where We Do All The Drawing
{
	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);	// Clear Screen And Depth Buffer
	glLoadIdentity();									// Reset The Current Modelview Matrix
	glTranslatef(-1.5f,0.0f,-6.0f);						// Move Left 1.5 Units And Into The Screen 6.0
	glBegin(GL_TRIANGLES);								// Drawing Using Triangles
		glVertex3f( 0.0f, 1.0f, 0.0f);					// Top
		glVertex3f(-1.0f,-1.0f, 0.0f);					// Bottom Left
		glVertex3f( 1.0f,-1.0f, 0.0f);					// Bottom Right
	glEnd();											// Finished Drawing The Triangle
	glTranslatef(3.0f,0.0f,0.0f);						// Move Right 3 Units
	glBegin(GL_QUADS);									// Draw A Quad
		glVertex3f(-1.0f, 1.0f, 0.0f);					// Top Left
		glVertex3f( 1.0f, 1.0f, 0.0f);					// Top Right
		glVertex3f( 1.0f,-1.0f, 0.0f);					// Bottom Right
		glVertex3f(-1.0f,-1.0f, 0.0f);					// Bottom Left
	glEnd();											// Done Drawing The Quad
	return TRUE;										// Keep Going
}

GLvoid KillGLWindow(GLvoid)								// Properly Kill The Window
{
	if (fullscreen)										// Are We In Fullscreen Mode?
	{
		ChangeDisplaySettings(NULL,0);					// If So Switch Back To The Desktop
		ShowCursor(TRUE);								// Show Mouse Pointer
	}

	if (hRC)											// Do We Have A Rendering Context?
	{
		if (!wglMakeCurrent(NULL,NULL))					// Are We Able To Release The DC And RC Contexts?
		{
			MessageBox(NULL,"Release Of DC And RC Failed.","SHUTDOWN ERROR",MB_OK | MB_ICONINFORMATION);
		}

		if (!wglDeleteContext(hRC))						// Are We Able To Delete The RC?
		{
			MessageBox(NULL,"Release Rendering Context Failed.","SHUTDOWN ERROR",MB_OK | MB_ICONINFORMATION);
		}
		hRC=NULL;										// Set RC To NULL
	}

	if (hDC && !ReleaseDC(hWnd,hDC))					// Are We Able To Release The DC
	{
		MessageBox(NULL,"Release Device Context Failed.","SHUTDOWN ERROR",MB_OK | MB_ICONINFORMATION);
		hDC=NULL;										// Set DC To NULL
	}

	if (hWnd && !DestroyWindow(hWnd))					// Are We Able To Destroy The Window?
	{
		MessageBox(NULL,"Could Not Release hWnd.","SHUTDOWN ERROR",MB_OK | MB_ICONINFORMATION);
		hWnd=NULL;										// Set hWnd To NULL
	}

	if (!UnregisterClass("OpenGL",hInstance))			// Are We Able To Unregister Class
	{
		MessageBox(NULL,"Could Not Unregister Class.","SHUTDOWN ERROR",MB_OK | MB_ICONINFORMATION);
		hInstance=NULL;									// Set hInstance To NULL
	}
}

/*	This Code Creates Our OpenGL Window.  Parameters Are:					*
 *	title			- Title To Appear At The Top Of The Window				*
 *	width			- Width Of The GL Window Or Fullscreen Mode				*
 *	height			- Height Of The GL Window Or Fullscreen Mode			*
 *	bits			- Number Of Bits To Use For Color (8/16/24/32)			*
 *	fullscreenflag	- Use Fullscreen Mode (TRUE) Or Windowed Mode (FALSE)	*/

BOOL CreateGLWindow(char* title, int width, int height, int bits, bool fullscreenflag)
{
	GLuint		PixelFormat;			// Holds The Results After Searching For A Match
	WNDCLASS	wc;						// Windows Class Structure
	DWORD		dwExStyle;				// Window Extended Style
	DWORD		dwStyle;				// Window Style
	RECT		WindowRect;				// Grabs Rectangle Upper Left / Lower Right Values
	WindowRect.left=(long)0;			// Set Left Value To 0
	WindowRect.right=(long)width;		// Set Right Value To Requested Width
	WindowRect.top=(long)0;				// Set Top Value To 0
	WindowRect.bottom=(long)height;		// Set Bottom Value To Requested Height

	fullscreen=fullscreenflag;			// Set The Global Fullscreen Flag

	hInstance			= GetModuleHandle(NULL);				// Grab An Instance For Our Window
	wc.style			= CS_HREDRAW | CS_VREDRAW | CS_OWNDC;	// Redraw On Size, And Own DC For Window.
	wc.lpfnWndProc		= (WNDPROC) WndProc;					// WndProc Handles Messages
	wc.cbClsExtra		= 0;									// No Extra Window Data
	wc.cbWndExtra		= 0;									// No Extra Window Data
	wc.hInstance		= hInstance;							// Set The Instance
	wc.hIcon			= LoadIcon(NULL, IDI_WINLOGO);			// Load The Default Icon
	wc.hCursor			= LoadCursor(NULL, IDC_ARROW);			// Load The Arrow Pointer
	wc.hbrBackground	= NULL;									// No Background Required For GL
	wc.lpszMenuName		= NULL;									// We Don't Want A Menu
	wc.lpszClassName	= "OpenGL";								// Set The Class Name

	if (!RegisterClass(&wc))									// Attempt To Register The Window Class
	{
		MessageBox(NULL,"Failed To Register The Window Class.","ERROR",MB_OK|MB_ICONEXCLAMATION);
		return FALSE;											// Return FALSE
	}

	if (fullscreen)												// Attempt Fullscreen Mode?
	{
		DEVMODE dmScreenSettings;								// Device Mode
		memset(&dmScreenSettings,0,sizeof(dmScreenSettings));	// Makes Sure Memory's Cleared
		dmScreenSettings.dmSize=sizeof(dmScreenSettings);		// Size Of The Devmode Structure
		dmScreenSettings.dmPelsWidth	= width;				// Selected Screen Width
		dmScreenSettings.dmPelsHeight	= height;				// Selected Screen Height
		dmScreenSettings.dmBitsPerPel	= bits;					// Selected Bits Per Pixel
		dmScreenSettings.dmFields=DM_BITSPERPEL|DM_PELSWIDTH|DM_PELSHEIGHT;

		// Try To Set Selected Mode And Get Results.  NOTE: CDS_FULLSCREEN Gets Rid Of Start Bar.
		if (ChangeDisplaySettings(&dmScreenSettings,CDS_FULLSCREEN)!=DISP_CHANGE_SUCCESSFUL)
		{
			// If The Mode Fails, Offer Two Options.  Quit Or Use Windowed Mode.
			if (MessageBox(NULL,"The Requested Fullscreen Mode Is Not Supported By\nYour Video Card. Use Windowed Mode Instead?","NeHe GL",MB_YESNO|MB_ICONEXCLAMATION)==IDYES)
			{
				fullscreen=FALSE;		// Windowed Mode Selected.  Fullscreen = FALSE
			}
			else
			{
				// Pop Up A Message Box Letting User Know The Program Is Closing.
				MessageBox(NULL,"Program Will Now Close.","ERROR",MB_OK|MB_ICONSTOP);
				return FALSE;									// Return FALSE
			}
		}
	}

	if (fullscreen)												// Are We Still In Fullscreen Mode?
	{
		dwExStyle=WS_EX_APPWINDOW;								// Window Extended Style
		dwStyle=WS_POPUP;										// Windows Style
		ShowCursor(FALSE);										// Hide Mouse Pointer
	}
	else
	{
		dwExStyle=WS_EX_APPWINDOW | WS_EX_WINDOWEDGE;			// W

indow Extended Style
		dwStyle=WS_OVERLAPPEDWINDOW;							// Windows Style
	}

	AdjustWindowRectEx(&WindowRect, dwStyle, FALSE, dwExStyle);		// Adjust Window To True Requested Size

	// Create The Window
	if (!(hWnd=CreateWindowEx(	dwExStyle,							// Extended Style For The Window
								"OpenGL",							// Class Name
								title,								// Window Title
								dwStyle |							// Defined Window Style
								WS_CLIPSIBLINGS |					// Required Window Style
								WS_CLIPCHILDREN,					// Required Window Style
								0, 0,								// Window Position
								WindowRect.right-WindowRect.left,	// Calculate Window Width
								WindowRect.bottom-WindowRect.top,	// Calculate Window Height
								NULL,								// No Parent Window
								NULL,								// No Menu
								hInstance,							// Instance
								NULL)))								// Dont Pass Anything To WM_CREATE
	{
		KillGLWindow();								// Reset The Display
		MessageBox(NULL,"Window Creation Error.","ERROR",MB_OK|MB_ICONEXCLAMATION);
		return FALSE;								// Return FALSE
	}

	static	PIXELFORMATDESCRIPTOR pfd=				// pfd Tells Windows How We Want Things To Be
	{
		sizeof(PIXELFORMATDESCRIPTOR),				// Size Of This Pixel Format Descriptor
		1,											// Version Number
		PFD_DRAW_TO_WINDOW |						// Format Must Support Window
		PFD_SUPPORT_OPENGL |						// Format Must Support OpenGL
		PFD_DOUBLEBUFFER,							// Must Support Double Buffering
		PFD_TYPE_RGBA,								// Request An RGBA Format
		bits,										// Select Our 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,									// Accumulation Bits Ignored
		16,											// 16Bit Z-Buffer (Depth Buffer)
		0,											// No Stencil Buffer
		0,											// No Auxiliary Buffer
		PFD_MAIN_PLANE,								// Main Drawing Layer
		0,											// Reserved
		0, 0, 0										// Layer Masks Ignored
	};

	if (!(hDC=GetDC(hWnd)))							// Did We Get A Device Context?
	{
		KillGLWindow();								// Reset The Display
		MessageBox(NULL,"Can't Create A GL Device Context.","ERROR",MB_OK|MB_ICONEXCLAMATION);
		return FALSE;								// Return FALSE
	}

	if (!(PixelFormat=ChoosePixelFormat(hDC,&pfd)))	// Did Windows Find A Matching Pixel Format?
	{
		KillGLWindow();								// Reset The Display
		MessageBox(NULL,"Can't Find A Suitable PixelFormat.","ERROR",MB_OK|MB_ICONEXCLAMATION);
		return FALSE;								// Return FALSE
	}

	if(!SetPixelFormat(hDC,PixelFormat,&pfd))		// Are We Able To Set The Pixel Format?
	{
		KillGLWindow();								// Reset The Display
		MessageBox(NULL,"Can't Set The PixelFormat.","ERROR",MB_OK|MB_ICONEXCLAMATION);
		return FALSE;								// Return FALSE
	}

	if (!(hRC=wglCreateContext(hDC)))				// Are We Able To Get A Rendering Context?
	{
		KillGLWindow();								// Reset The Display
		MessageBox(NULL,"Can't Create A GL Rendering Context.","ERROR",MB_OK|MB_ICONEXCLAMATION);
		return FALSE;								// Return FALSE
	}

	if(!wglMakeCurrent(hDC,hRC))					// Try To Activate The Rendering Context
	{
		KillGLWindow();								// Reset The Display
		MessageBox(NULL,"Can't Activate The GL Rendering Context.","ERROR",MB_OK|MB_ICONEXCLAMATION);
		return FALSE;								// Return FALSE
	}

	ShowWindow(hWnd,SW_SHOW);						// Show The Window
	SetForegroundWindow(hWnd);						// Slightly Higher Priority
	SetFocus(hWnd);									// Sets Keyboard Focus To The Window
	ReSizeGLScene(width, height);					// Set Up Our Perspective GL Screen

	if (!InitGL())									// Initialize Our Newly Created GL Window
	{
		KillGLWindow();								// Reset The Display
		MessageBox(NULL,"Initialization Failed.","ERROR",MB_OK|MB_ICONEXCLAMATION);
		return FALSE;								// Return FALSE
	}

	return TRUE;									// Success
}

LRESULT CALLBACK WndProc(	HWND	hWnd,			// Handle For This Window
							UINT	uMsg,			// Message For This Window
							WPARAM	wParam,			// Additional Message Information
							LPARAM	lParam)			// Additional Message Information
{
	switch (uMsg)									// Check For Windows Messages
	{
		case WM_ACTIVATE:							// Watch For Window Activate Message
		{
			if (!HIWORD(wParam))					// Check Minimization State
			{
				active=TRUE;						// Program Is Active
			}
			else
			{
				active=FALSE;						// Program Is No Longer Active
			}

			return 0;								// Return To The Message Loop
		}

		case WM_SYSCOMMAND:
		{
			switch (wParam)
			{
				case SC_SCREENSAVE:
				case SC_MONITORPOWER:
					return 0;
			}
			break;
		}

		case WM_CLOSE:								// Did We Receive A Close Message?
		{
			PostQuitMessage(0);						// Send A Quit Message
			return 0;								// Jump Back
		}

		case WM_KEYDOWN:							// Is A Key Being Held Down?
		{
			keys[wParam] = TRUE;					// If So, Mark It As TRUE
			return 0;								// Jump Back
		}

		case WM_KEYUP:								// Has A Key Been Released?
		{
			keys[wParam] = FALSE;					// If So, Mark It As FALSE
			return 0;								// Jump Back
		}

		case WM_SIZE:								// Resize The OpenGL Window
		{
			ReSizeGLScene(LOWORD(lParam),HIWORD(lParam));  // LoWord=Width, HiWord=Height
			return 0;								// Jump Back
		}
	}

	// Pass All Unhandled Messages To DefWindowProc
	return DefWindowProc(hWnd,uMsg,wParam,lParam);
}

int WINAPI WinMain(	HINSTANCE	hInstance,			// Instance
					HINSTANCE	hPrevInstance,		// Previous Instance
					LPSTR		lpCmdLine,			// Command Line Parameters
					int			nCmdShow)			// Window Show State
{
	MSG		msg;									// Windows Message Structure
	BOOL	done=FALSE;								// Bool Variable To Exit Loop

	// Ask The User Which Screen Mode They Prefer
	if (MessageBox(NULL,"Would You Like To Run In Fullscreen Mode?", "Start FullScreen?",MB_YESNO|MB_ICONQUESTION)==IDNO)
	{
		fullscreen=FALSE;							// Windowed Mode
	}

	// Create Our OpenGL Window
	if (!CreateGLWindow("NeHe's First Polygon Tutorial",640,480,16,fullscreen))
	{
		return 0;									// Quit If Window Was Not Created
	}

	while(!done)									// Loop That Runs While done=FALSE
	{
		if (PeekMessage(&msg,NULL,0,0,PM_REMOVE))	// Is There A Message Waiting?
		{
			if (msg.message==WM_QUIT)				// Have We Received A Quit Message?
			{
				done=TRUE;							// If So done=TRUE
			}
			else									// If Not, Deal With Window Messages
			{
				TranslateMessage(&msg);				// Translate The Message
				DispatchMessage(&msg);				// Dispatch The Message
			}
		}
		else										// If There Are No Messages
		{
			// Draw The Scene.  Watch For ESC Key And Quit Messages From DrawGLScene()
			if ((active && !DrawGLScene()) || keys[VK_ESCAPE])	// Active?  Was There A Quit Received?
			{
				done=TRUE;							// ESC or DrawGLScene Signalled A Quit
			}
			else									// Not Time To Quit, Update Screen
			{
				SwapBuffers(hDC);					// Swap Buffers (Double Buffering)
			}

			if (keys[VK_F1])						// Is F1 Being Pressed?
			{
				keys[VK_F1]=FALSE;					// If So Make Key FALSE
				KillGLWindow();						// Kill Our Current Window
				fullscreen=!fullscreen;				// Toggle Fullscreen / Windowed Mode
				// Recreate Our OpenGL Window
				if (!CreateGLWindow("NeHe's First Polygon Tutorial",640,480,16,fullscreen))
				{
					return 0;						// Quit If Window Was Not Created
				}
			}
		}
	}

	// Shutdown
	KillGLWindow();									// Kill The Window
	return (msg.wParam);							// Exit The Program
}


{
    QApplication app(argv, args);

    QGraphicsItem *ball = new QGraphicsEllipseItem(0, 0, 20, 20);

    QTimeLine *timer = new QTimeLine(5000);
    timer->setFrameRange(0, 100);

    QGraphicsItemAnimation *animation = new QGraphicsItemAnimation;
    animation->setItem(ball);
    animation->setTimeLine(timer);

    for (int i = 0; i < 200; ++i)
        animation->setPosAt(i / 200.0, QPointF(i, i));

    QGraphicsScene *scene = new QGraphicsScene;
    scene->setSceneRect(0, 0, 250, 250);
    scene->addItem(ball);

    QGraphicsView *view = new QGraphicsView(scene);
    view->show();

    timer->start();

    return app.exec();
}


{
    QApplication app(argv, args);

    QGraphicsItem *ball = new QGraphicsEllipseItem(0, 0, 20, 20);

    QTimeLine *timer = new QTimeLine(5000);
    timer->setFrameRange(0, 100);

    QGraphicsItemAnimation *animation = new QGraphicsItemAnimation;

    animation->setItem(ball);
    animation->setTimeLine(timer);

    for (int i = 0; i < 200; ++i)
        animation->setPosAt(i / 200.0, QPointF(i, i));

    QGraphicsScene *scene = new QGraphicsScene;
    scene->setSceneRect(0, 0, 250, 250);
    scene->addItem(ball);

    QGraphicsView *view = new QGraphicsView(scene);
    view->show();

    timer->start();

    return app.exec();
}


animation->setItem(ball);
    animation->setTimeLine(timer);

    for (int i = 0; i < 200; ++i)
        animation->setPosAt(i / 200.0, QPointF(i, i));

    QGraphicsScene *scene = new QGraphicsScene;
    scene->setSceneRect(0, 0, 250, 250);

/****************************************************************************
**
**
** This file is part of the documentation of the Qt Toolkit.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include <QtWidgets>
#include <math.h>

int main(int argv, char *args[])
{
    QApplication app(argv, args);

    QGraphicsItem *ball = new QGraphicsEllipseItem(0, 0, 20, 20);

    QTimeLine *timer = new QTimeLine(5000);
    timer->setFrameRange(0, 100);

    QGraphicsItemAnimation *animation = new QGraphicsItemAnimation;

    scene->addItem(ball);

    QGraphicsView *view = new QGraphicsView(scene);
    view->show();

    timer->start();

    return app.exec();
}


scene->addItem(ball);

    QGraphicsView *view = new QGraphicsView(scene);
    view->show();

    timer->start();

    return app.exec();
}

/****************************************************************************
**
**
** This file is part of the documentation of the Qt Toolkit.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include <QtWidgets>
#include <math.h>

int main(int argv, char *args[])
{
    QApplication app(argv, args);

    QGraphicsItem *ball = new QGraphicsEllipseItem(0, 0, 20, 20);

    QTimeLine *timer = new QTimeLine(5000);
    timer->setFrameRange(0, 100);

    QGraphicsItemAnimation *animation = new QGraphicsItemAnimation;
    animation->setItem(ball);
    animation->setTimeLine(timer);

    for (int i = 0; i < 200; ++i)
        animation->setPosAt(i / 200.0, QPointF(i, i));

    QGraphicsScene *scene = new QGraphicsScene;
    scene->setSceneRect(0, 0, 250, 250);


    QGraphicsItem *ball = new QGraphicsEllipseItem(0, 0, 20, 20);

    QTimeLine *timer = new QTimeLine(5000);
    timer->setFrameRange(0, 100);

    QGraphicsItemAnimation *animation = new QGraphicsItemAnimation;
    animation->setItem(ball);
    animation->setTimeLine(timer);

    for (int i = 0; i < 200; ++i)
        animation->setPosAt(i / 200.0, QPointF(i, i));

    QGraphicsScene *scene = new QGraphicsScene;
    scene->setSceneRect(0, 0, 250, 250);
    scene->addItem(ball);

    QGraphicsView *view = new QGraphicsView(scene);
    view->show();

    timer->start();

    return app.exec();
}


for (int i = 0; i < 200; ++i)
        animation->setPosAt(i / 200.0, QPointF(i, i));

/****************************************************************************
**
**
** This file is part of the documentation of the Qt Toolkit.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include <QtWidgets>
#include <math.h>

int main(int argv, char *args[])
{
    QApplication app(argv, args);

    QGraphicsItem *ball = new QGraphicsEllipseItem(0, 0, 20, 20);

    QTimeLine *timer = new QTimeLine(5000);
    timer->setFrameRange(0, 100);

    QGraphicsItemAnimation *animation = new QGraphicsItemAnimation;
    animation->setItem(ball);
    animation->setTimeLine(timer);

    QGraphicsScene *scene = new QGraphicsScene;
    scene->setSceneRect(0, 0, 250, 250);
    scene->addItem(ball);

    QGraphicsView *view = new QGraphicsView(scene);
    view->show();

    timer->start();

    return app.exec();
}


/****************************************************************************
**
**
** This file is part of the documentation of the Qt Toolkit.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include <QtWidgets>
#include <math.h>

int main(int argv, char *args[])
{
    QApplication app(argv, args);

    QGraphicsItem *ball = new QGraphicsEllipseItem(0, 0, 20, 20);

    QTimeLine *timer = new QTimeLine(5000);
    timer->setFrameRange(0, 100);

    QGraphicsItemAnimation *

animation = new QGraphicsItemAnimation;
    animation->setItem(ball);
    animation->setTimeLine(timer);

    for (int i = 0; i < 200; ++i)
        animation->setPosAt(i / 200.0, QPointF(i, i));

    QGraphicsScene *scene = new QGraphicsScene;
    scene->setSceneRect(0, 0, 250, 250);
    scene->addItem(ball);

    QGraphicsView *view = new QGraphicsView(scene);
    view->show();

    timer->start();

    return app.exec();
}


string getCompare (Operator op, VkFormat format, string lhs, string rhs)

/*------------------------------------------------------------------------
 * Vulkan Conformance Tests
 * ------------------------
 *
 *
 *
 */ /*!
 * \file
 * \brief Subgroups Tests
 */ /*--------------------------------------------------------------------*/

#include "vktSubgroupsScanHelpers.hpp"
#include "vktSubgroupsTestsUtils.hpp"

#include <string>
#include <vector>

using namespace tcu;
using namespace std;
using namespace vk;
using namespace vkt;

string getScanOpName (string prefix, string suffix, Operator op, ScanType scanType)
{
	string n;
	switch (scanType)
	{
		case SCAN_REDUCE:		n = "";				break;
		case SCAN_INCLUSIVE:	n = "Inclusive";	break;
		case SCAN_EXCLUSIVE:	n = "Exclusive";	break;
	}
	switch (op)
	{
		case OPERATOR_ADD:	n += "Add";	break;
		case OPERATOR_MUL:	n += "Mul";	break;
		case OPERATOR_MIN:	n += "Min";	break;
		case OPERATOR_MAX:	n += "Max";	break;
		case OPERATOR_AND:	n += "And";	break;
		case OPERATOR_OR:	n += "Or";	break;
		case OPERATOR_XOR:	n += "Xor";	break;
	}
	return prefix + n + suffix;
}

string getOpOperation (Operator op, VkFormat format, string lhs, string rhs)
{
	switch (op)
	{
		default:
			DE_FATAL("Unsupported op type");
			return "";
		case OPERATOR_ADD:
			return lhs + " + " + rhs;
		case OPERATOR_MUL:
			return lhs + " * " + rhs;
		case OPERATOR_MIN:
			switch (format)
			{
				default:
					return "min(" + lhs + ", " + rhs + ")";
				case VK_FORMAT_R16_SFLOAT:
				case VK_FORMAT_R32_SFLOAT:
				case VK_FORMAT_R64_SFLOAT:
					return "(isnan(" + lhs + ") ? " + rhs + " : (isnan(" + rhs + ") ? " + lhs + " : min(" + lhs + ", " + rhs + ")))";
				case VK_FORMAT_R16G16_SFLOAT:
				case VK_FORMAT_R16G16B16_SFLOAT:
				case VK_FORMAT_R16G16B16A16_SFLOAT:
				case VK_FORMAT_R32G32_SFLOAT:
				case VK_FORMAT_R32G32B32_SFLOAT:
				case VK_FORMAT_R32G32B32A32_SFLOAT:
				case VK_FORMAT_R64G64_SFLOAT:
				case VK_FORMAT_R64G64B64_SFLOAT:
				case VK_FORMAT_R64G64B64A64_SFLOAT:
					return "mix(mix(min(" + lhs + ", " + rhs + "), " + lhs + ", isnan(" + rhs + ")), " + rhs + ", isnan(" + lhs + "))";
			}
		case OPERATOR_MAX:
			switch (format)
			{
				default:
					return "max(" + lhs + ", " + rhs + ")";
				case VK_FORMAT_R16_SFLOAT:
				case VK_FORMAT_R32_SFLOAT:
				case VK_FORMAT_R64_SFLOAT:
					return "(isnan(" + lhs + ") ? " + rhs + " : (isnan(" + rhs + ") ? " + lhs + " : max(" + lhs + ", " + rhs + ")))";
				case VK_FORMAT_R16G16_SFLOAT:
				case VK_FORMAT_R16G16B16_SFLOAT:
				case VK_FORMAT_R16G16B16A16_SFLOAT:
				case VK_FORMAT_R32G32_SFLOAT:
				case VK_FORMAT_R32G32B32_SFLOAT:
				case VK_FORMAT_R32G32B32A32_SFLOAT:
				case VK_FORMAT_R64G64_SFLOAT:
				case VK_FORMAT_R64G64B64_SFLOAT:
				case VK_FORMAT_R64G64B64A64_SFLOAT:
					return "mix(mix(max(" + lhs + ", " + rhs + "), " + lhs + ", isnan(" + rhs + ")), " + rhs + ", isnan(" + lhs + "))";
			}
		case OPERATOR_AND:
			switch (format)
			{
				default:
					return lhs + " & " + rhs;
				case VK_FORMAT_R8_USCALED:
					return lhs + " && " + rhs;
				case VK_FORMAT_R8G8_USCALED:
					return "bvec2(" + lhs + ".x && " + rhs + ".x, " + lhs + ".y && " + rhs + ".y)";
				case VK_FORMAT_R8G8B8_USCALED:
					return "bvec3(" + lhs + ".x && " + rhs + ".x, " + lhs + ".y && " + rhs + ".y, " + lhs + ".z && " + rhs + ".z)";
				case VK_FORMAT_R8G8B8A8_USCALED:
					return "bvec4(" + lhs + ".x && " + rhs + ".x, " + lhs + ".y && " + rhs + ".y, " + lhs + ".z && " + rhs + ".z, " + lhs + ".w && " + rhs + ".w)";
			}
		case OPERATOR_OR:
			switch (format)
			{
				default:
					return lhs + " | " + rhs;
				case VK_FORMAT_R8_USCALED:
					return lhs + " || " + rhs;
				case VK_FORMAT_R8G8_USCALED:
					return "bvec2(" + lhs + ".x || " + rhs + ".x, " + lhs + ".y || " + rhs + ".y)";
				case VK_FORMAT_R8G8B8_USCALED:
					return "bvec3(" + lhs + ".x || " + rhs + ".x, " + lhs + ".y || " + rhs + ".y, " + lhs + ".z || " + rhs + ".z)";
				case VK_FORMAT_R8G8B8A8_USCALED:
					return "bvec4(" + lhs + ".x || " + rhs + ".x, " + lhs + ".y || " + rhs + ".y, " + lhs + ".z || " + rhs + ".z, " + lhs + ".w || " + rhs + ".w)";
			}
		case OPERATOR_XOR:
			switch (format)
			{
				default:
					return lhs + " ^ " + rhs;
				case VK_FORMAT_R8_USCALED:
					return lhs + " ^^ " + rhs;
				case VK_FORMAT_R8G8_USCALED:
					return "bvec2(" + lhs + ".x ^^ " + rhs + ".x, " + lhs + ".y ^^ " + rhs + ".y)";
				case VK_FORMAT_R8G8B8_USCALED:
					return "bvec3(" + lhs + ".x ^^ " + rhs + ".x, " + lhs + ".y ^^ " + rhs + ".y, " + lhs + ".z ^^ " + rhs + ".z)";
				case VK_FORMAT_R8G8B8A8_USCALED:
					return "bvec4(" + lhs + ".x ^^ " + rhs + ".x, " + lhs + ".y ^^ " + rhs + ".y, " + lhs + ".z ^^ " + rhs + ".z, " + lhs + ".w ^^ " + rhs + ".w)";
			}
	}
}

string getIdentity (Operator op, VkFormat format)
{
	const bool isFloat		= subgroups::isFormatFloat(format);
	const bool isInt		= subgroups::isFormatSigned(format);
	const bool isUnsigned	= subgroups::isFormatUnsigned(format);

	switch (op)
	{
		default:
			DE_FATAL("Unsupported op type");
			return "";
		case OPERATOR_ADD:
			return subgroups::getFormatNameForGLSL(format) + "(0)";
		case OPERATOR_MUL:
			return subgroups::getFormatNameForGLSL(format) + "(1)";
		case OPERATOR_MIN:
			if (isFloat)
			{
				return subgroups::getFormatNameForGLSL(format) + "(intBitsToFloat(0x7f800000))";
			}
			else if (isInt)
			{
				switch (format)
				{
					default:
						return subgroups::getFormatNameForGLSL(format) + "(0x7fffffff)";
					case VK_FORMAT_R8_SINT:
					case VK_FORMAT_R8G8_SINT:
					case VK_FORMAT_R8G8B8_SINT:
					case VK_FORMAT_R8G8B8A8_SINT:
					case VK_FORMAT_R8_UINT:
					case VK_FORMAT_R8G8_UINT:
					case VK_FORMAT_R8G8B8_UINT:
					case VK_FORMAT_R8G8B8A8_UINT:
						return subgroups::getFormatNameForGLSL(format) + "(0x7f)";
					case VK_FORMAT_R16_SINT:
					case VK_FORMAT_R16G16_SINT:
					case VK_FORMAT_R16G16B16_SINT:
					case VK_FORMAT_R16G16B16A16_SINT:
					case VK_FORMAT_R16_UINT:
					case VK_FORMAT_R16G16_UINT:
					case VK_FORMAT_R16G16B16_UINT:
					case VK_FORMAT_R16G16B16A16_UINT:
						return subgroups::getFormatNameForGLSL(format) + "(0x7fff)";
					case VK_FORMAT_R64_SINT:
					case VK_FORMAT_R64G64_SINT:
					case VK_FORMAT_R64G64B64_SINT:
					case VK_FORMAT_R64G64B64A64_SINT:
					case VK_FORMAT_R64_UINT:
					case VK_FORMAT_R64G64_UINT:
					case VK_FORMAT_R64G64B64_UINT:
					case VK_FORMAT_R64G64B64A64_UINT:
						return subgroups::getFormatNameForGLSL(format) + "(0x7fffffffffffffffUL)";
				}
			}
			else if (isUnsigned)
			{
				return subgroups::getFormatNameForGLSL(format) + "(-1)";
			}
			else
			{
				DE_FATAL("Unhandled case");
				return "";
			}
		case OPERATOR_MAX:
			if (isFloat)
			{
				return subgroups::getFormatNameForGLSL(format) + "(intBitsToFloat(0xff800000))";
			}
			else if (isInt)
			{
				switch (format)
				{
					default:
						return subgroups::getFormatNameForGLSL(format) + "(0x80000000)";
					case VK_FORMAT_R8_SINT:
					case VK_FORMAT_R8G8_SINT:
					case VK_FORMAT_R8G8B8_SINT:
					case VK_FORMAT_R8G8B8A8_SINT:
					case VK_FORMAT_R8_UINT:
					case VK_FORMAT_R8G8_UINT:
					case VK_FORMAT_R8G8B8_UINT:
					case VK_FORMAT_R8G8B8A8_UINT:
						return subgroups::getFormatNameForGLSL(format) + "(0x80)";
					case VK_FORMAT_R16_SINT:
					case VK_FORMAT_R16G16_SINT:
					case VK_FORMAT_R16G16B16_SINT:
					case VK_FORMAT_R16G16B16A16_SINT:
					case VK_FORMAT_R16_UINT:
					case VK_FORMAT_R16G16_UINT:
					case VK_FORMAT_R16G16B16_UINT:
					case VK_FORMAT_R16G16B16A16_UINT:
						return subgroups::getFormatNameForGLSL(format) + "(0x8000)";
					case VK_FORMAT_R64_SINT:
					case VK_FORMAT_R64G64_SINT:
					case VK_FORMAT_R64G64B64_SINT:
					case VK_FORMAT_R64G64B64A64_SINT:
					case VK_FORMAT_R64_UINT:
					case VK_FORMAT_R64G64_UINT:
					case VK_FORMAT_R64G64B64_UINT:
					case VK_FORMAT_R64G64B64A64_UINT:
						return subgroups::getFormatNameForGLSL(format) + "(0x8000000000000000UL)";
				}
			}
			else if (isUnsigned)
			{
				return subgroups::getFormatNameForGLSL(format) + "(0)";
			}
			else
			{
				DE_FATAL("Unhandled case");
				return "";
			}
		case OPERATOR_AND:
			return subgroups::getFormatNameForGLSL(format) + "(~0)";
		case OPERATOR_OR:
			return subgroups::getFormatNameForGLSL(format) + "(0)";
		case OPERATOR_XOR:
			return subgroups::getFormatNameForGLSL(format) + "(0)";
	}
}

{
	const string	formatName	= subgroups::getFormatNameForGLSL(format);
	const bool		isMinMax	= (op == OPERATOR_MIN || op == OPERATOR_MAX);

	switch (format)
	{
		default:
			return "all(equal(" + lhs + ", " + rhs + "))";
		case VK_FORMAT_R8_USCALED:
		case VK_FORMAT_R8_UINT:
		case VK_FORMAT_R8_SINT:
		case VK_FORMAT_R16_UINT:
		case VK_FORMAT_R16_SINT:
		case VK_FORMAT_R32_UINT:
		case VK_FORMAT_R32_SINT:
		case VK_FORMAT_R64_UINT:
		case VK_FORMAT_R64_SINT:
			return "(" + lhs + " == " + rhs + ")";
		case VK_FORMAT_R16_SFLOAT:
			if (isMinMax)
				return "(" + lhs + " == " + rhs + ")";
			else
				return "(abs(" + lhs + " - " + rhs + ") < " + formatName + "(gl_SubgroupSize==128 ? 0.2: 0.1))";
		case VK_FORMAT_R32_SFLOAT:
		case VK_FORMAT_R64_SFLOAT:
			if (isMinMax)
				return "(" + lhs + " == " + rhs + ")";
			else
				return "(abs(" + lhs + " - " + rhs + ") < (gl_SubgroupSize==128 ? 0.00002:0.00001))";
		case VK_FORMAT_R16G16_SFLOAT:
		case VK_FORMAT_R16G16B16_SFLOAT:
		case VK_FORMAT_R16G16B16A16_SFLOAT:
			if (isMinMax)
				return "all(equal(" + lhs + ", " + rhs + "))";
			else
				return "all(lessThan(abs(" + lhs + " - " + rhs + "), " + formatName + "(gl_SubgroupSize==128 ? 0.2: 0.1)))";
		case VK_FORMAT_R32G32_SFLOAT:
		case VK_FORMAT_R32G32B32_SFLOAT:
		case VK_FORMAT_R32G32B32A32_SFLOAT:
		case VK_FORMAT_R64G64_SFLOAT:
		case VK_FORMAT_R64G64B64_SFLOAT:
		case VK_FORMAT_R64G64B64A64_SFLOAT:
			if (isMinMax)
				return "all(equal(" + lhs + ", " + rhs + "))";
			else
				return "all(lessThan(abs(" + lhs + " - " + rhs + "), " + formatName + "(gl_SubgroupSize==128 ? 0.00002: 0.00001)))";
	}
}


{
	string n;
	switch (scanType)
	{
		case SCAN_REDUCE:		n = "";				break;
		case SCAN_INCLUSIVE:	n = "Inclusive";	break;
		case SCAN_EXCLUSIVE:	n = "Exclusive";	break;
	}
	switch (op)
	{
		case OPERATOR_ADD:	n += "Add";	break;
		case OPERATOR_MUL:	n += "Mul";	break;
		case OPERATOR_MIN:	n += "Min";	break;
		case OPERATOR_MAX:	n += "Max";	break;
		case OPERATOR_AND:	n += "And";	break;
		case OPERATOR_OR:	n += "Or";	break;
		case OPERATOR_XOR:	n += "Xor";	break;
	}
	return prefix + n + suffix;
}

/*------------------------------------------------------------------------
 * Vulkan Conformance Tests
 * ------------------------
 *
 *
 *
 */ /*!
 * \file
 * \brief Subgroups Tests
 */ /*--------------------------------------------------------------------*/

#include "vktSubgroupsScanHelpers.hpp"
#include "vktSubgroupsTestsUtils.hpp"

#include <string>
#include <vector>

using namespace tcu;
using namespace std;
using namespace vk;
using namespace vkt;

string getScanOpName (string prefix, string suffix, Operator op, ScanType scanType)

string getOpOperation (Operator op, VkFormat format, string lhs, string rhs)
{
	switch (op)
	{
		default:
			DE_FATAL("Unsupported op type");
			return "";
		case OPERATOR_ADD:
			return lhs + " + " + rhs;
		case OPERATOR_MUL:
			return lhs + " * " + rhs;
		case OPERATOR_MIN:
			switch (format)
			{
				default:
					return "min(" + lhs + ", " + rhs + ")";
				case VK_FORMAT_R16_SFLOAT:
				case VK_FORMAT_R32_SFLOAT:
				case VK_FORMAT_R64_SFLOAT:
					return "(isnan(" + lhs + ") ? " + rhs + " : (isnan(" + rhs + ") ? " + lhs + " : min(" + lhs + ", " + rhs + ")))";
				case VK_FORMAT_R16G16_SFLOAT:
				case VK_FORMAT_R16G16B16_SFLOAT:
				case VK_FORMAT_R16G16B16A16_SFLOAT:
				case VK_FORMAT_R32G32_SFLOAT:
				case VK_FORMAT_R32G32B32_SFLOAT:
				case VK_FORMAT_R32G32B32A32_SFLOAT:
				case VK_FORMAT_R64G64_SFLOAT:
				case VK_FORMAT_R64G64B64_SFLOAT:
				case VK_FORMAT_R64G64B64A64_SFLOAT:
					return "mix(mix(min(" + lhs + ", " + rhs + "), " + lhs + ", isnan(" + rhs + ")), " + rhs + ", isnan(" + lhs + "))";
			}
		case OPERATOR_MAX:
			switch (format)
			{
				default:
					return "max(" + lhs + ", " + rhs + ")";
				case VK_FORMAT_R16_SFLOAT:
				case VK_FORMAT_R32_SFLOAT:
				case VK_FORMAT_R64_SFLOAT:
					return "(isnan(" + lhs + ") ? " + rhs + " : (isnan(" + rhs + ") ? " + lhs + " : max(" + lhs + ", " + rhs + ")))";
				case VK_FORMAT_R16G16_SFLOAT:
				case VK_FORMAT_R16G16B16_SFLOAT:
				case VK_FORMAT_R16G16B16A16_SFLOAT:
				case VK_FORMAT_R32G32_SFLOAT:
				case VK_FORMAT_R32G32B32_SFLOAT:
				case VK_FORMAT_R32G32B32A32_SFLOAT:
				case VK_FORMAT_R64G64_SFLOAT:
				case VK_FORMAT_R64G64B64_SFLOAT:
				case VK_FORMAT_R64G64B64A64_SFLOAT:
					return "mix(mix(max(" + lhs + ", " + rhs + "), " + lhs + ", isnan(" + rhs + ")), " + rhs + ", isnan(" + lhs + "))";
			}
		case OPERATOR_AND:
			switch (format)
			{
				default:
					return lhs + " & " + rhs;
				case VK_FORMAT_R8_USCALED:
					return lhs + " && " + rhs;
				case VK_FORMAT_R8G8_USCALED:
					return "bvec2(" + lhs + ".x && " + rhs + ".x, " + lhs + ".y && " + rhs + ".y)";
				case VK_FORMAT_R8G8B8_USCALED:
					return "bvec3(" + lhs + ".x && " + rhs + ".x, " + lhs + ".y && " + rhs + ".y, " + lhs + ".z && " + rhs + ".z)";
				case VK_FORMAT_R8G8B8A8_USCALED:
					return "bvec4(" + lhs + ".x && " + rhs + ".x, " + lhs + ".y && " + rhs + ".y, " + lhs + ".z && " + rhs + ".z, " + lhs + ".w && " + rhs + ".w)";
			}
		case OPERATOR_OR:
			switch (format)
			{
				default:
					return lhs + " | " + rhs;
				case VK_FORMAT_R8_USCALED:
					return lhs + " || " + rhs;
				case VK_FORMAT_R8G8_USCALED:
					return "bvec2(" + lhs + ".x || " + rhs + ".x, " + lhs + ".y || " + rhs + ".y)";
				case VK_FORMAT_R8G8B8_USCALED:
					return "bvec3(" + lhs + ".x || " + rhs + ".x, " + lhs + ".y || " + rhs + ".y, " + lhs + ".z || " + rhs + ".z)";
				case VK_FORMAT_R8G8B8A8_USCALED:
					return "bvec4(" + lhs + ".x || " + rhs + ".x, " + lhs + ".y || " + rhs + ".y, " + lhs + ".z || " + rhs + ".z, " + lhs + ".w || " + rhs + ".w)";
			}
		case OPERATOR_XOR:
			switch (format)
			{
				default:
					return lhs + " ^ " + rhs;
				case VK_FORMAT_R8_USCALED:
					return lhs + " ^^ " + rhs;
				case VK_FORMAT_R8G8_USCALED:
					return "bvec2(" + lhs + ".x ^^ " + rhs + ".x, " + lhs + ".y ^^ " + rhs + ".y)";
				case VK_FORMAT_R8G8B8_USCALED:
					return "bvec3(" + lhs + ".x ^^ " + rhs + ".x, " + lhs + ".y ^^ " + rhs + ".y, " + lhs + ".z ^^ " + rhs + ".z)";
				case VK_FORMAT_R8G8B8A8_USCALED:
					return "bvec4(" + lhs + ".x ^^ " + rhs + ".x, " + lhs + ".y ^^ " + rhs + ".y, " + lhs + ".z ^^ " + rhs + ".z, " + lhs + ".w ^^ " + rhs + ".w)";
			}
	}
}

string getIdentity (Operator op, VkFormat format)
{
	const bool isFloat		= subgroups::isFormatFloat(format);
	const bool isInt		= subgroups::isFormatSigned(format);
	const bool isUnsigned	= subgroups::isFormatUnsigned(format);

	switch (op)
	{
		default:
			DE_FATAL("Unsupported op type");
			return "";
		case OPERATOR_ADD:
			return subgroups::getFormatNameForGLSL(format) + "(0)";
		case OPERATOR_MUL:
			return subgroups::getFormatNameForGLSL(format) + "(1)";
		case OPERATOR_MIN:
			if (isFloat)
			{
				return subgroups::getFormatNameForGLSL(format) + "(intBitsToFloat(0x7f800000))";
			}
			else if (isInt)
			{
				switch (format)
				{
					default:
						return subgroups::getFormatNameForGLSL(format) + "(0x7fffffff)";
					case VK_FORMAT_R8_SINT:
					case VK_FORMAT_R8G8_SINT:
					case VK_FORMAT_R8G8B8_SINT:
					case VK_FORMAT_R8G8B8A8_SINT:
					case VK_FORMAT_R8_UINT:
					case VK_FORMAT_R8G8_UINT:
					case VK_FORMAT_R8G8B8_UINT:
					case VK_FORMAT_R8G8B8A8_UINT:
						return subgroups::getFormatNameForGLSL(format) + "(0x7f)";
					case VK_FORMAT_R16_SINT:
					case VK_FORMAT_R16G16_SINT:
					case VK_FORMAT_R16G16B16_SINT:
					case VK_FORMAT_R16G16B16A16_SINT:
					case VK_FORMAT_R16_UINT:
					case VK_FORMAT_R16G16_UINT:
					case VK_FORMAT_R16G16B16_UINT:
					case VK_FORMAT_R16G16B16A16_UINT:
						return subgroups::getFormatNameForGLSL(format) + "(0x7fff)";
					case VK_FORMAT_R64_SINT:
					case VK_FORMAT_R64G64_SINT:
					case VK_FORMAT_R64G64B64_SINT:
					case VK_FORMAT_R64G64B64A64_SINT:
					case VK_FORMAT_R64_UINT:
					case VK_FORMAT_R64G64_UINT:
					case VK_FORMAT_R64G64B64_UINT:
					case VK_FORMAT_R64G64B64A64_UINT:
						return subgroups::getFormatNameForGLSL(format) + "(0x7fffffffffffffffUL)";
				}
			}
			else if (isUnsigned)
			{
				return subgroups::getFormatNameForGLSL(format) + "(-1)";
			}
			else
			{
				DE_FATAL("Unhandled case");
				return "";
			}
		case OPERATOR_MAX:
			if (isFloat)
			{
				return subgroups::getFormatNameForGLSL(format) + "(intBitsToFloat(0xff800000))";
			}
			else if (isInt)
			{
				switch (format)
				{
					default:
						return subgroups::getFormatNameForGLSL(format) + "(0x80000000)";
					case VK_FORMAT_R8_SINT:
					case VK_FORMAT_R8G8_SINT:
					case VK_FORMAT_R8G8B8_SINT:
					case VK_FORMAT_R8G8B8A8_SINT:
					case VK_FORMAT_R8_UINT:
					case VK_FORMAT_R8G8_UINT:
					case VK_FORMAT_R8G8B8_UINT:
					case VK_FORMAT_R8G8B8A8_UINT:
						return subgroups::getFormatNameForGLSL(format) + "(0x80)";
					case VK_FORMAT_R16_SINT:
					case VK_FORMAT_R16G16_SINT:
					case VK_FORMAT_R16G16B16_SINT:
					case VK_FORMAT_R16G16B16A16_SINT:
					case VK_FORMAT_R16_UINT:
					case VK_FORMAT_R16G16_UINT:
					case VK_FORMAT_R16G16B16_UINT:
					case VK_FORMAT_R16G16B16A16_UINT:
						return subgroups::getFormatNameForGLSL(format) + "(0x8000)";
					case VK_FORMAT_R64_SINT:
					case VK_FORMAT_R64G64_SINT:
					case VK_FORMAT_R64G64B64_SINT:
					case VK_FORMAT_R64G64B64A64_SINT:
					case VK_FORMAT_R64_UINT:
					case VK_FORMAT_R64G64_UINT:
					case VK_FORMAT_R64G64B64_UINT:
					case VK_FORMAT_R64G64B64A64_UINT:
						return subgroups::getFormatNameForGLSL(format) + "(0x8000000000000000UL)";
				}
			}
			else if (isUnsigned)
			{
				return subgroups::getFormatNameForGLSL(format) + "(0)";
			}
			else
			{
				DE_FATAL("Unhandled case");
				return "";
			}
		case OPERATOR_AND:
			return subgroups::getFormatNameForGLSL(format) + "(~0)";
		case OPERATOR_OR:
			return subgroups::getFormatNameForGLSL(format) + "(0)";
		case OPERATOR_XOR:
			return subgroups::getFormatNameForGLSL(format) + "(0)";
	}
}

string getCompare (Operator op, VkFormat format, string lhs, string rhs)
{
	const string	formatName	= subgroups::getFormatNameForGLSL(format);
	const bool		isMinMax	= (op == OPERATOR_MIN || op == OPERATOR_MAX);

	switch (format)
	{
		default:
			return "all(equal(" + lhs + ", " + rhs + "))";
		case VK_FORMAT_R8_USCALED:
		case VK_FORMAT_R8_UINT:
		case VK_FORMAT_R8_SINT:
		case VK_FORMAT_R16_UINT:
		case VK_FORMAT_R16_SINT:
		case VK_FORMAT_R32_UINT:
		case VK_FORMAT_R32_SINT:
		case VK_FORMAT_R64_UINT:
		case VK_FORMAT_R64_SINT:
			return "(" + lhs + " == " + rhs + ")";
		case VK_FORMAT_R16_SFLOAT:
			if (isMinMax)
				return "(" + lhs + " == " + rhs + ")";
			else
				return "(abs(" + lhs + " - " + rhs + ") < " + formatName + "(gl_SubgroupSize==128 ? 0.2: 0.1))";
		case VK_FORMAT_R32_SFLOAT:
		case VK_FORMAT_R64_SFLOAT:
			if (isMinMax)
				return "(" + lhs + " == " + rhs + ")";
			else
				return "(abs(" + lhs + " - " + rhs + ") < (gl_SubgroupSize==128 ? 0.00002:0.00001))";
		case VK_FORMAT_R16G16_SFLOAT:
		case VK_FORMAT_R16G16B16_SFLOAT:
		case VK_FORMAT_R16G16B16A16_SFLOAT:
			if (isMinMax)
				return "all(equal(" + lhs + ", " + rhs + "))";
			else
				return "all(lessThan(abs(" + lhs + " - " + rhs + "), " + formatName + "(gl_SubgroupSize==128 ? 0.2: 0.1)))";
		case VK_FORMAT_R32G32_SFLOAT:
		case VK_FORMAT_R32G32B32_SFLOAT:
		case VK_FORMAT_R32G32B32A32_SFLOAT:
		case VK_FORMAT_R64G64_SFLOAT:
		case VK_FORMAT_R64G64B64_SFLOAT:
		case VK_FORMAT_R64G64B64A64_SFLOAT:
			if (isMinMax)
				return "all(equal(" + lhs + ", " + rhs + "))";
			else
				return "all(lessThan(abs(" + lhs + " - " + rhs + "), " + formatName + "(gl_SubgroupSize==128 ? 0.00002: 0.00001)))";
	}
}


{
	const string	formatName	= subgroups::getFormatNameForGLSL(format);

/*------------------------------------------------------------------------
 * Vulkan Conformance Tests
 * ------------------------
 *
 *
 *
 */ /*!
 * \file
 * \brief Subgroups Tests
 */ /*--------------------------------------------------------------------*/

#include "vktSubgroupsScanHelpers.hpp"
#include "vktSubgroupsTestsUtils.hpp"

#include <string>
#include <vector>

using namespace tcu;
using namespace std;
using namespace vk;
using namespace vkt;

string getScanOpName (string prefix, string suffix, Operator op, ScanType scanType)
{
	string n;
	switch (scanType)
	{
		case SCAN_REDUCE:		n = "";				break;
		case SCAN_INCLUSIVE:	n = "Inclusive";	break;
		case SCAN_EXCLUSIVE:	n = "Exclusive";	break;
	}
	switch (op)
	{
		case OPERATOR_ADD:	n += "Add";	break;
		case OPERATOR_MUL:	n += "Mul";	break;
		case OPERATOR_MIN:	n += "Min";	break;
		case OPERATOR_MAX:	n += "Max";	break;
		case OPERATOR_AND:	n += "And";	break;
		case OPERATOR_OR:	n += "Or";	break;
		case OPERATOR_XOR:	n += "Xor";	break;
	}
	return prefix + n + suffix;
}

string getOpOperation (Operator op, VkFormat format, string lhs, string rhs)
{
	switch (op)
	{
		default:
			DE_FATAL("Unsupported op type");
			return "";
		case OPERATOR_ADD:
			return lhs + " + " + rhs;
		case OPERATOR_MUL:
			return lhs + " * " + rhs;
		case OPERATOR_MIN:
			switch (format)
			{
				default:
					return "min(" + lhs + ", " + rhs + ")";
				case VK_FORMAT_R16_SFLOAT:
				case VK_FORMAT_R32_SFLOAT:
				case VK_FORMAT_R64_SFLOAT:
					return "(isnan(" + lhs + ") ? " + rhs + " : (isnan(" + rhs + ") ? " + lhs + " : min(" + lhs + ", " + rhs + ")))";
				case VK_FORMAT_R16G16_SFLOAT:
				case VK_FORMAT_R16G16B16_SFLOAT:
				case VK_FORMAT_R16G16B16A16_SFLOAT:
				case VK_FORMAT_R32G32_SFLOAT:
				case VK_FORMAT_R32G32B32_SFLOAT:
				case VK_FORMAT_R32G32B32A32_SFLOAT:
				case VK_FORMAT_R64G64_SFLOAT:
				case VK_FORMAT_R64G64B64_SFLOAT:
				case VK_FORMAT_R64G64B64A64_SFLOAT:
					return "mix(mix(min(" + lhs + ", " + rhs + "), " + lhs + ", isnan(" + rhs + ")), " + rhs + ", isnan(" + lhs + "))";
			}
		case OPERATOR_MAX:
			switch (format)
			{
				default:
					return "max(" + lhs + ", " + rhs + ")";
				case VK_FORMAT_R16_SFLOAT:
				case VK_FORMAT_R32_SFLOAT:
				case VK_FORMAT_R64_SFLOAT:
					return "(isnan(" + lhs + ") ? " + rhs + " : (isnan(" + rhs + ") ? " + lhs + " : max(" + lhs + ", " + rhs + ")))";
				case VK_FORMAT_R16G16_SFLOAT:
				case VK_FORMAT_R16G16B16_SFLOAT:
				case VK_FORMAT_R16G16B16A16_SFLOAT:
				case VK_FORMAT_R32G32_SFLOAT:
				case VK_FORMAT_R32G32B32_SFLOAT:
				case VK_FORMAT_R32G32B32A32_SFLOAT:
				case VK_FORMAT_R64G64_SFLOAT:
				case VK_FORMAT_R64G64B64_SFLOAT:
				case VK_FORMAT_R64G64B64A64_SFLOAT:
					return "mix(mix(max(" + lhs + ", " + rhs + "), " + lhs + ", isnan(" + rhs + ")), " + rhs + ", isnan(" + lhs + "))";
			}
		case OPERATOR_AND:
			switch (format)
			{
				default:
					return lhs + " & " + rhs;
				case VK_FORMAT_R8_USCALED:
					return lhs + " && " + rhs;
				case VK_FORMAT_R8G8_USCALED:
					return "bvec2(" + lhs + ".x && " + rhs + ".x, " + lhs + ".y && " + rhs + ".y)";
				case VK_FORMAT_R8G8B8_USCALED:
					return "bvec3(" + lhs + ".x && " + rhs + ".x, " + lhs + ".y && " + rhs + ".y, " + lhs + ".z && " + rhs + ".z)";
				case VK_FORMAT_R8G8B8A8_USCALED:
					return "bvec4(" + lhs + ".x && " + rhs + ".x, " + lhs + ".y && " + rhs + ".y, " + lhs + ".z && " + rhs + ".z, " + lhs + ".w && " + rhs + ".w)";
			}
		case OPERATOR_OR:
			switch (format)
			{
				default:
					return lhs + " | " + rhs;
				case VK_FORMAT_R8_USCALED:
					return lhs + " || " + rhs;
				case VK_FORMAT_R8G8_USCALED:
					return "bvec2(" + lhs + ".x || " + rhs + ".x, " + lhs + ".y || " + rhs + ".y)";
				case VK_FORMAT_R8G8B8_USCALED:
					return "bvec3(" + lhs + ".x || " + rhs + ".x, " + lhs + ".y || " + rhs + ".y, " + lhs + ".z || " + rhs + ".z)";
				case VK_FORMAT_R8G8B8A8_USCALED:
					return "bvec4(" + lhs + ".x || " + rhs + ".x, " + lhs + ".y || " + rhs + ".y, " + lhs + ".z || " + rhs + ".z, " + lhs + ".w || " + rhs + ".w)";
			}
		case OPERATOR_XOR:
			switch (format)
			{
				default:
					return lhs + " ^ " + rhs;
				case VK_FORMAT_R8_USCALED:
					return lhs + " ^^ " + rhs;
				case VK_FORMAT_R8G8_USCALED:
					return "bvec2(" + lhs + ".x ^^ " + rhs + ".x, " + lhs + ".y ^^ " + rhs + ".y)";
				case VK_FORMAT_R8G8B8_USCALED:
					return "bvec3(" + lhs + ".x ^^ " + rhs + ".x, " + lhs + ".y ^^ " + rhs + ".y, " + lhs + ".z ^^ " + rhs + ".z)";
				case VK_FORMAT_R8G8B8A8_USCALED:
					return "bvec4(" + lhs + ".x ^^ " + rhs + ".x, " + lhs + ".y ^^ " + rhs + ".y, " + lhs + ".z ^^ " + rhs + ".z, " + lhs + ".w ^^ " + rhs + ".w)";
			}
	}
}

string getIdentity (Operator op, VkFormat format)
{
	const bool isFloat		= subgroups::isFormatFloat(format);
	const bool isInt		= subgroups::isFormatSigned(format);
	const bool isUnsigned	= subgroups::isFormatUnsigned(format);

	switch (op)
	{
		default:
			DE_FATAL("Unsupported op type");
			return "";
		case OPERATOR_ADD:
			return subgroups::getFormatNameForGLSL(format) + "(0)";
		case OPERATOR_MUL:
			return subgroups::getFormatNameForGLSL(format) + "(1)";
		case OPERATOR_MIN:
			if (isFloat)
			{
				return subgroups::getFormatNameForGLSL(format) + "(intBitsToFloat(0x7f800000))";
			}
			else if (isInt)
			{
				switch (format)
				{
					default:
						return subgroups::getFormatNameForGLSL(format) + "(0x7fffffff)";
					case VK_FORMAT_R8_SINT:
					case VK_FORMAT_R8G8_SINT:
					case VK_FORMAT_R8G8B8_SINT:
					case VK_FORMAT_R8G8B8A8_SINT:
					case VK_FORMAT_R8_UINT:
					case VK_FORMAT_R8G8_UINT:
					case VK_FORMAT_R8G8B8_UINT:
					case VK_FORMAT_R8G8B8A8_UINT:
						return subgroups::getFormatNameForGLSL(format) + "(0x7f)";
					case VK_FORMAT_R16_SINT:
					case VK_FORMAT_R16G16_SINT:
					case VK_FORMAT_R16G16B16_SINT:
					case VK_FORMAT_R16G16B16A16_SINT:
					case VK_FORMAT_R16_UINT:
					case VK_FORMAT_R16G16_UINT:
					case VK_FORMAT_R16G16B16_UINT:
					case VK_FORMAT_R16G16B16A16_UINT:
						return subgroups::getFormatNameForGLSL(format) + "(0x7fff)";
					case VK_FORMAT_R64_SINT:
					case VK_FORMAT_R64G64_SINT:
					case VK_FORMAT_R64G64B64_SINT:
					case VK_FORMAT_R64G64B64A64_SINT:
					case VK_FORMAT_R64_UINT:
					case VK_FORMAT_R64G64_UINT:
					case VK_FORMAT_R64G64B64_UINT:
					case VK_FORMAT_R64G64B64A64_UINT:
						return subgroups::getFormatNameForGLSL(format) + "(0x7fffffffffffffffUL)";
				}
			}
			else if (isUnsigned)
			{
				return subgroups::getFormatNameForGLSL(format) + "(-1)";
			}
			else
			{
				DE_FATAL("Unhandled case");
				return "";
			}
		case OPERATOR_MAX:
			if (isFloat)
			{
				return subgroups::getFormatNameForGLSL(format) + "(intBitsToFloat(0xff800000))";
			}
			else if (isInt)
			{
				switch (format)
				{
					default:
						return subgroups::getFormatNameForGLSL(format) + "(0x80000000)";
					case VK_FORMAT_R8_SINT:
					case VK_FORMAT_R8G8_SINT:
					case VK_FORMAT_R8G8B8_SINT:
					case VK_FORMAT_R8G8B8A8_SINT:
					case VK_FORMAT_R8_UINT:
					case VK_FORMAT_R8G8_UINT:
					case VK_FORMAT_R8G8B8_UINT:
					case VK_FORMAT_R8G8B8A8_UINT:
						return subgroups::getFormatNameForGLSL(format) + "(0x80)";
					case VK_FORMAT_R16_SINT:
					case VK_FORMAT_R16G16_SINT:
					case VK_FORMAT_R16G16B16_SINT:
					case VK_FORMAT_R16G16B16A16_SINT:
					case VK_FORMAT_R16_UINT:
					case VK_FORMAT_R16G16_UINT:
					case VK_FORMAT_R16G16B16_UINT:
					case VK_FORMAT_R16G16B16A16_UINT:
						return subgroups::getFormatNameForGLSL(format) + "(0x8000)";
					case VK_FORMAT_R64_SINT:
					case VK_FORMAT_R64G64_SINT:
					case VK_FORMAT_R64G64B64_SINT:
					case VK_FORMAT_R64G64B64A64_SINT:
					case VK_FORMAT_R64_UINT:
					case VK_FORMAT_R64G64_UINT:
					case VK_FORMAT_R64G64B64_UINT:
					case VK_FORMAT_R64G64B64A64_UINT:
						return subgroups::getFormatNameForGLSL(format) + "(0x8000000000000000UL)";
				}
			}
			else if (isUnsigned)
			{
				return subgroups::getFormatNameForGLSL(format) + "(0)";
			}
			else
			{
				DE_FATAL("Unhandled case");
				return "";
			}
		case OPERATOR_AND:
			return subgroups::getFormatNameForGLSL(format) + "(~0)";
		case OPERATOR_OR:
			return subgroups::getFormatNameForGLSL(format) + "(0)";
		case OPERATOR_XOR:
			return subgroups::getFormatNameForGLSL(format) + "(0)";
	}
}

string getCompare (Operator op, VkFormat format, string lhs, string rhs)

	const bool		isMinMax	= (op == OPERATOR_MIN || op == OPERATOR_MAX);

	switch (format)
	{
		default:
			return "all(equal(" + lhs + ", " + rhs + "))";
		case VK_FORMAT_R8_USCALED:
		case VK_FORMAT_R8_UINT:
		case VK_FORMAT_R8_SINT:
		case VK_FORMAT_R16_UINT:
		case VK_FORMAT_R16_SINT:
		case VK_FORMAT_R32_UINT:
		case VK_FORMAT_R32_SINT:
		case VK_FORMAT_R64_UINT:
		case VK_FORMAT_R64_SINT:
			return "(" + lhs + " == " + rhs + ")";
		case VK_FORMAT_R16_SFLOAT:
			if (isMinMax)
				return "(" + lhs + " == " + rhs + ")";
			else
				return "(abs(" + lhs + " - " + rhs + ") < " + formatName + "(gl_SubgroupSize==128 ? 0.2: 0.1))";
		case VK_FORMAT_R32_SFLOAT:
		case VK_FORMAT_R64_SFLOAT:
			if (isMinMax)
				return "(" + lhs + " == " + rhs + ")";
			else
				return "(abs(" + lhs + " - " + rhs + ") < (gl_SubgroupSize==128 ? 0.00002:0.00001))";
		case VK_FORMAT_R16G16_SFLOAT:
		case VK_FORMAT_R16G16B16_SFLOAT:
		case VK_FORMAT_R16G16B16A16_SFLOAT:
			if (isMinMax)
				return "all(equal(" + lhs + ", " + rhs + "))";
			else
				return "all(lessThan(abs(" + lhs + " - " + rhs + "), " + formatName + "(gl_SubgroupSize==128 ? 0.2: 0.1)))";
		case VK_FORMAT_R32G32_SFLOAT:
		case VK_FORMAT_R32G32B32_SFLOAT:
		case VK_FORMAT_R32G32B32A32_SFLOAT:
		case VK_FORMAT_R64G64_SFLOAT:
		case VK_FORMAT_R64G64B64_SFLOAT:
		case VK_FORMAT_R64G64B64A64_SFLOAT:
			if (isMinMax)
				return "all(equal(" + lhs + ", " + rhs + "))";
			else
				return "all(lessThan(abs(" + lhs + " - " + rhs + "), " + formatName + "(gl_SubgroupSize==128 ? 0.00002: 0.00001)))";
	}
}


const bool		isMinMax	= (op == OPERATOR_MIN || op == OPERATOR_MAX);

/*------------------------------------------------------------------------
 * Vulkan Conformance Tests
 * ------------------------
 *
 *
 *
 */ /*!
 * \file
 * \brief Subgroups Tests
 */ /*--------------------------------------------------------------------*/

#include "vktSubgroupsScanHelpers.hpp"
#include "vktSubgroupsTestsUtils.hpp"

#include <string>
#include <vector>

using namespace tcu;
using namespace std;
using namespace vk;
using namespace vkt;

string getScanOpName (string prefix, string suffix, Operator op, ScanType scanType)
{
	string n;
	switch (scanType)
	{
		case SCAN_REDUCE:		n = "";				break;
		case SCAN_INCLUSIVE:	n = "Inclusive";	break;
		case SCAN_EXCLUSIVE:	n = "Exclusive";	break;
	}
	switch (op)
	{
		case OPERATOR_ADD:	n += "Add";	break;
		case OPERATOR_MUL:	n += "Mul";	break;
		case OPERATOR_MIN:	n += "Min";	break;
		case OPERATOR_MAX:	n += "Max";	break;
		case OPERATOR_AND:	n += "And";	break;
		case OPERATOR_OR:	n += "Or";	break;
		case OPERATOR_XOR:	n += "Xor";	break;
	}
	return prefix + n + suffix;
}

string getOpOperation (Operator op, VkFormat format, string lhs, string rhs)
{
	switch (op)
	{
		default:
			DE_FATAL("Unsupported op type");
			return "";
		case OPERATOR_ADD:
			return lhs + " + " + rhs;
		case OPERATOR_MUL:
			return lhs + " * " + rhs;
		case OPERATOR_MIN:
			switch (format)
			{
				default:
					return "min(" + lhs + ", " + rhs + ")";
				case VK_FORMAT_R16_SFLOAT:
				case VK_FORMAT_R32_SFLOAT:
				case VK_FORMAT_R64_SFLOAT:
					return "(isnan(" + lhs + ") ? " + rhs + " : (isnan(" + rhs + ") ? " + lhs + " : min(" + lhs + ", " + rhs + ")))";
				case VK_FORMAT_R16G16_SFLOAT:
				case VK_FORMAT_R16G16B16_SFLOAT:
				case VK_FORMAT_R16G16B16A16_SFLOAT:
				case VK_FORMAT_R32G32_SFLOAT:
				case VK_FORMAT_R32G32B32_SFLOAT:
				case VK_FORMAT_R32G32B32A32_SFLOAT:
				case VK_FORMAT_R64G64_SFLOAT:
				case VK_FORMAT_R64G64B64_SFLOAT:
				case VK_FORMAT_R64G64B64A64_SFLOAT:
					return "mix(mix(min(" + lhs + ", " + rhs + "), " + lhs + ", isnan(" + rhs + ")), " + rhs + ", isnan(" + lhs + "))";
			}
		case OPERATOR_MAX:
			switch (format)
			{
				default:
					return "max(" + lhs + ", " + rhs + ")";
				case VK_FORMAT_R16_SFLOAT:
				case VK_FORMAT_R32_SFLOAT:
				case VK_FORMAT_R64_SFLOAT:
					return "(isnan(" + lhs + ") ? " + rhs + " : (isnan(" + rhs + ") ? " + lhs + " : max(" + lhs + ", " + rhs + ")))";
				case VK_FORMAT_R16G16_SFLOAT:
				case VK_FORMAT_R16G16B16_SFLOAT:
				case VK_FORMAT_R16G16B16A16_SFLOAT:
				case VK_FORMAT_R32G32_SFLOAT:
				case VK_FORMAT_R32G32B32_SFLOAT:
				case VK_FORMAT_R32G32B32A32_SFLOAT:
				case VK_FORMAT_R64G64_SFLOAT:
				case VK_FORMAT_R64G64B64_SFLOAT:
				case VK_FORMAT_R64G64B64A64_SFLOAT:
					return "mix(mix(max(" + lhs + ", " + rhs + "), " + lhs + ", isnan(" + rhs + ")), " + rhs + ", isnan(" + lhs + "))";
			}
		case OPERATOR_AND:
			switch (format)
			{
				default:
					return lhs + " & " + rhs;
				case VK_FORMAT_R8_USCALED:
					return lhs + " && " + rhs;
				case VK_FORMAT_R8G8_USCALED:
					return "bvec2(" + lhs + ".x && " + rhs + ".x, " + lhs + ".y && " + rhs + ".y)";
				case VK_FORMAT_R8G8B8_USCALED:
					return "bvec3(" + lhs + ".x && " + rhs + ".x, " + lhs + ".y && " + rhs + ".y, " + lhs + ".z && " + rhs + ".z)";
				case VK_FORMAT_R8G8B8A8_USCALED:
					return "bvec4(" + lhs + ".x && " + rhs + ".x, " + lhs + ".y && " + rhs + ".y, " + lhs + ".z && " + rhs + ".z, " + lhs + ".w && " + rhs + ".w)";
			}
		case OPERATOR_OR:
			switch (format)
			{
				default:
					return lhs + " | " + rhs;
				case VK_FORMAT_R8_USCALED:
					return lhs + " || " + rhs;
				case VK_FORMAT_R8G8_USCALED:
					return "bvec2(" + lhs + ".x || " + rhs + ".x, " + lhs + ".y || " + rhs + ".y)";
				case VK_FORMAT_R8G8B8_USCALED:
					return "bvec3(" + lhs + ".x || " + rhs + ".x, " + lhs + ".y || " + rhs + ".y, " + lhs + ".z || " + rhs + ".z)";
				case VK_FORMAT_R8G8B8A8_USCALED:
					return "bvec4(" + lhs + ".x || " + rhs + ".x, " + lhs + ".y || " + rhs + ".y, " + lhs + ".z || " + rhs + ".z, " + lhs + ".w || " + rhs + ".w)";
			}
		case OPERATOR_XOR:
			switch (format)
			{
				default:
					return lhs + " ^ " + rhs;
				case VK_FORMAT_R8_USCALED:
					return lhs + " ^^ " + rhs;
				case VK_FORMAT_R8G8_USCALED:
					return "bvec2(" + lhs + ".x ^^ " + rhs + ".x, " + lhs + ".y ^^ " + rhs + ".y)";
				case VK_FORMAT_R8G8B8_USCALED:
					return "bvec3(" + lhs + ".x ^^ " + rhs + ".x, " + lhs + ".y ^^ " + rhs + ".y, " + lhs + ".z ^^ " + rhs + ".z)";
				case VK_FORMAT_R8G8B8A8_USCALED:
					return "bvec4(" + lhs + ".x ^^ " + rhs + ".x, " + lhs + ".y ^^ " + rhs + ".y, " + lhs + ".z ^^ " + rhs + ".z, " + lhs + ".w ^^ " + rhs + ".w)";
			}
	}
}

string getIdentity (Operator op, VkFormat format)
{
	const bool isFloat		= subgroups::isFormatFloat(format);
	const bool isInt		= subgroups::isFormatSigned(format);
	const bool isUnsigned	= subgroups::isFormatUnsigned(format);

	switch (op)
	{
		default:
			DE_FATAL("Unsupported op type");
			return "";
		case OPERATOR_ADD:
			return subgroups::getFormatNameForGLSL(format) + "(0)";
		case OPERATOR_MUL:
			return subgroups::getFormatNameForGLSL(format) + "(1)";
		case OPERATOR_MIN:
			if (isFloat)
			{
				return subgroups::getFormatNameForGLSL(format) + "(intBitsToFloat(0x7f800000))";
			}
			else if (isInt)
			{
				switch (format)
				{
					default:
						return subgroups::getFormatNameForGLSL(format) + "(0x7fffffff)";
					case VK_FORMAT_R8_SINT:
					case VK_FORMAT_R8G8_SINT:
					case VK_FORMAT_R8G8B8_SINT:
					case VK_FORMAT_R8G8B8A8_SINT:
					case VK_FORMAT_R8_UINT:
					case VK_FORMAT_R8G8_UINT:
					case VK_FORMAT_R8G8B8_UINT:
					case VK_FORMAT_R8G8B8A8_UINT:
						return subgroups::getFormatNameForGLSL(format) + "(0x7f)";
					case VK_FORMAT_R16_SINT:
					case VK_FORMAT_R16G16_SINT:
					case VK_FORMAT_R16G16B16_SINT:
					case VK_FORMAT_R16G16B16A16_SINT:
					case VK_FORMAT_R16_UINT:
					case VK_FORMAT_R16G16_UINT:
					case VK_FORMAT_R16G16B16_UINT:
					case VK_FORMAT_R16G16B16A16_UINT:
						return subgroups::getFormatNameForGLSL(format) + "(0x7fff)";
					case VK_FORMAT_R64_SINT:
					case VK_FORMAT_R64G64_SINT:
					case VK_FORMAT_R64G64B64_SINT:
					case VK_FORMAT_R64G64B64A64_SINT:
					case VK_FORMAT_R64_UINT:
					case VK_FORMAT_R64G64_UINT:
					case VK_FORMAT_R64G64B64_UINT:
					case VK_FORMAT_R64G64B64A64_UINT:
						return subgroups::getFormatNameForGLSL(format) + "(0x7fffffffffffffffUL)";
				}
			}
			else if (isUnsigned)
			{
				return subgroups::getFormatNameForGLSL(format) + "(-1)";
			}
			else
			{
				DE_FATAL("Unhandled case");
				return "";
			}
		case OPERATOR_MAX:
			if (isFloat)
			{
				return subgroups::getFormatNameForGLSL(format) + "(intBitsToFloat(0xff800000))";
			}
			else if (isInt)
			{
				switch (format)
				{
					default:
						return subgroups::getFormatNameForGLSL(format) + "(0x80000000)";
					case VK_FORMAT_R8_SINT:
					case VK_FORMAT_R8G8_SINT:
					case VK_FORMAT_R8G8B8_SINT:
					case VK_FORMAT_R8G8B8A8_SINT:
					case VK_FORMAT_R8_UINT:
					case VK_FORMAT_R8G8_UINT:
					case VK_FORMAT_R8G8B8_UINT:
					case VK_FORMAT_R8G8B8A8_UINT:
						return subgroups::getFormatNameForGLSL(format) + "(0x80)";
					case VK_FORMAT_R16_SINT:
					case VK_FORMAT_R16G16_SINT:
					case VK_FORMAT_R16G16B16_SINT:
					case VK_FORMAT_R16G16B16A16_SINT:
					case VK_FORMAT_R16_UINT:
					case VK_FORMAT_R16G16_UINT:
					case VK_FORMAT_R16G16B16_UINT:
					case VK_FORMAT_R16G16B16A16_UINT:
						return subgroups::getFormatNameForGLSL(format) + "(0x8000)";
					case VK_FORMAT_R64_SINT:
					case VK_FORMAT_R64G64_SINT:
					case VK_FORMAT_R64G64B64_SINT:
					case VK_FORMAT_R64G64B64A64_SINT:
					case VK_FORMAT_R64_UINT:
					case VK_FORMAT_R64G64_UINT:
					case VK_FORMAT_R64G64B64_UINT:
					case VK_FORMAT_R64G64B64A64_UINT:
						return subgroups::getFormatNameForGLSL(format) + "(0x8000000000000000UL)";
				}
			}
			else if (isUnsigned)
			{
				return subgroups::getFormatNameForGLSL(format) + "(0)";
			}
			else
			{
				DE_FATAL("Unhandled case");
				return "";
			}
		case OPERATOR_AND:
			return subgroups::getFormatNameForGLSL(format) + "(~0)";
		case OPERATOR_OR:
			return subgroups::getFormatNameForGLSL(format) + "(0)";
		case OPERATOR_XOR:
			return subgroups::getFormatNameForGLSL(format) + "(0)";
	}
}

string getCompare (Operator op, VkFormat format, string lhs, string rhs)
{
	const string	formatName	= subgroups::getFormatNameForGLSL(format);

	switch (format)
	{
		default:
			return "all(equal(" + lhs + ", " + rhs + "))";
		case VK_FORMAT_R8_USCALED:
		case VK_FORMAT_R8_UINT:
		case VK_FORMAT_R8_SINT:
		case VK_FORMAT_R16_UINT:
		case VK_FORMAT_R16_SINT:
		case VK_FORMAT_R32_UINT:
		case VK_FORMAT_R32_SINT:
		case VK_FORMAT_R64_UINT:
		case VK_FORMAT_R64_SINT:
			return "(" + lhs + " == " + rhs + ")";
		case VK_FORMAT_R16_SFLOAT:
			if (isMinMax)
				return "(" + lhs + " == " + rhs + ")";
			else
				return "(abs(" + lhs + " - " + rhs + ") < " + formatName + "(gl_SubgroupSize==128 ? 0.2: 0.1))";
		case VK_FORMAT_R32_SFLOAT:
		case VK_FORMAT_R64_SFLOAT:
			if (isMinMax)
				return "(" + lhs + " == " + rhs + ")";
			else
				return "(abs(" + lhs + " - " + rhs + ") < (gl_SubgroupSize==128 ? 0.00002:0.00001))";
		case VK_FORMAT_R16G16_SFLOAT:
		case VK_FORMAT_R16G16B16_SFLOAT:
		case VK_FORMAT_R16G16B16A16_SFLOAT:
			if (isMinMax)
				return "all(equal(" + lhs + ", " + rhs + "))";
			else
				return "all(lessThan(abs(" + lhs + " - " + rhs + "), " + formatName + "(gl_SubgroupSize==128 ? 0.2: 0.1)))";
		case VK_FORMAT_R32G32_SFLOAT:
		case VK_FORMAT_R32G32B32_SFLOAT:
		case VK_FORMAT_R32G32B32A32_SFLOAT:
		case VK_FORMAT_R64G64_SFLOAT:
		case VK_FORMAT_R64G64B64_SFLOAT:
		case VK_FORMAT_R64G64B64A64_SFLOAT:
			if (isMinMax)
				return "all(equal(" + lhs + ", " + rhs + "))";
			else
				return "all(lessThan(abs(" + lhs + " - " + rhs + "), " + formatName + "(gl_SubgroupSize==128 ? 0.00002: 0.00001)))";
	}
}