viewport

  
D3DVIEWPORT8 vp;
m_pd3dDevice->GetViewport(&vp);
   
CUSTOMVERTEX cvVertices[] =
{
   {0.0f, 0.0f, 0.5f, 1.0f, 0xffff0000 }, // x, y, z, rhw, color

   {(float)vp.Width, 0.0f, 0.5f, 1.0f, 0xffff0000 },
   {(float)vp.Width, (float)vp.Height, 0.5f, 1.0f, 0xff00ff00 },
   {0.0f, (float)vp.Height, 0.5f, 1.0f, 0xff00ffff },
};
  

  
{
   {0.0f, 0.0f, 0.5f, 1.0f, 0xffff0000 }, // x, y, z, rhw, color

   {400, 0.0f, 0.5f, 1.0f, 0xffff0000 },
   {400, 400, 0.5f, 1.0f, 0xff00ff00 },
   {0.0f, 400, 0.5f, 1.0f, 0xff00ffff },
};
  

  
//-----------------------------------------------------------------------------

// File: basic.cpp

//

// Desc: D3D sample showing the basics of DirectX Graphics Programming

// 

// Copyright (c) 1998-2000 Microsoft Corporation. All rights reserved.

// Copyright (c) 1998-2001 wolf@direct3d.net

//-----------------------------------------------------------------------------

#define STRICT
#include <tchar.h>
#include <math.h>
#include <stdio.h>
#include <D3DX8.h>
#include "D3DApp.h"
#include "D3DFont.h"
#include "D3DUtil.h"
#include "DXUtil.h"
#include "resource.h"


// A structure for our custom vertex type

struct CUSTOMVERTEX
{
    FLOAT x, y, z, rhw; // The transformed position for the vertex

    FLOAT tu, tv;		// texture coordinates

};

// Our custom FVF, which describes our custom vertex structure

#define D3DFVF_CUSTOMVERTEX (D3DFVF_XYZRHW|D3DFVF_TEX1)


//-----------------------------------------------------------------------------

// Name: class CMyD3DApplication

// Desc: Application class. The base class (CD3DApplication) provides the 

//       generic functionality needed in all Direct3D samples. CMyD3DApplication 

//       adds functionality specific to this sample program.

//-----------------------------------------------------------------------------

class CMyD3DApplication : public CD3DApplication
{
    CD3DFont* m_pFont;
	LPDIRECT3DVERTEXBUFFER8 m_pVB; // Buffer to hold vertices

    DWORD m_dwSizeofVertices;

    LPDIRECT3DTEXTURE8      m_pBackgroundTexture;

    HRESULT ConfirmDevice( D3DCAPS8*, DWORD, D3DFORMAT );

protected:
    HRESULT OneTimeSceneInit();
    HRESULT InitDeviceObjects();
    HRESULT RestoreDeviceObjects();
    HRESULT InvalidateDeviceObjects();
    HRESULT DeleteDeviceObjects();
    HRESULT Render();
    HRESULT FrameMove();
    HRESULT FinalCleanup();

public:
    CMyD3DApplication();
};

//-----------------------------------------------------------------------------

// Name: WinMain()

// Desc: Entry point to the program. Initializes everything, and goes into a

//       message-processing loop. Idle time is used to render the scene.

//-----------------------------------------------------------------------------

INT WINAPI WinMain( HINSTANCE hInst, HINSTANCE, LPSTR, INT )
{
    CMyD3DApplication d3dApp;

    if( FAILED( d3dApp.Create( hInst ) ) )
        return 0;

    return d3dApp.Run();
}


//-----------------------------------------------------------------------------

// Name: CMyD3DApplication()

// Desc: Application constructor. Sets attributes for the app.

//-----------------------------------------------------------------------------

CMyD3DApplication::CMyD3DApplication()
{
    m_strWindowTitle  = _T("Basic2");
	m_dwCreationWidth = 400;
	m_dwCreationHeight = 300;
    m_bUseDepthBuffer = TRUE;

	m_pVB = NULL;
    m_pFont = new CD3DFont( _T("Arial"), 12, D3DFONT_BOLD );
}

//-----------------------------------------------------------------------------

// Name: OneTimeSceneInit()

// Desc: Called during initial app startup, this function performs all the

//       permanent initialization.

//-----------------------------------------------------------------------------

HRESULT CMyD3DApplication::OneTimeSceneInit()
{
   return S_OK;
}


//-----------------------------------------------------------------------------

// Name: FrameMove()

// Desc: Called once per frame, the call is the entry point for animating

//       the scene.

//-----------------------------------------------------------------------------

HRESULT CMyD3DApplication::FrameMove()
{
    return S_OK;
}


//-----------------------------------------------------------------------------

// Name: Render()

// Desc: Called once per frame, the call is the entry point for 3d

//       rendering. This function sets up render states, clears the

//       viewport, and renders the scene.

//-----------------------------------------------------------------------------

HRESULT CMyD3DApplication::Render()
{
	m_pd3dDevice->Clear( 0L, NULL, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, 0x00000000, 1.0f, 0L );
    // Begin the scene

    if( SUCCEEDED( m_pd3dDevice->BeginScene() ) )
    {
		m_pd3dDevice->SetTexture( 0, m_pBackgroundTexture );
		m_pd3dDevice->SetTextureStageState( 0, D3DTSS_COLORARG1, D3DTA_TEXTURE );
		m_pd3dDevice->SetTextureStageState( 0, D3DTSS_COLOROP,   D3DTOP_SELECTARG1 );

		m_pd3dDevice->SetStreamSource( 0, m_pVB, sizeof(CUSTOMVERTEX) );
		m_pd3dDevice->SetVertexShader( D3DFVF_CUSTOMVERTEX );
	    m_pd3dDevice->DrawPrimitive( D3DPT_TRIANGLEFAN, 0, 2 );

        // Output statistics

        m_pFont->DrawText( 2,  0, D3DCOLOR_ARGB(255,255,255,0), m_strFrameStats );
        m_pFont->DrawText( 2, 20, D3DCOLOR_ARGB(255,255,255,0), m_strDeviceStats );
      // End the scene.

      m_pd3dDevice->EndScene();
    }

    return S_OK;
}

//-----------------------------------------------------------------------------

// Name: InitDeviceObjects()

// Desc: Initialize scene objects.

//-----------------------------------------------------------------------------

HRESULT CMyD3DApplication::InitDeviceObjects()
{
    m_pFont->InitDeviceObjects( m_pd3dDevice );

    // Load the texture for the background image

    if( FAILED( D3DUtil_CreateTexture( m_pd3dDevice, _T("Lake.bmp"),
                                       &m_pBackgroundTexture) ) )
        return D3DAPPERR_MEDIANOTFOUND;

   return S_OK;
}


//-----------------------------------------------------------------------------

// Name: RestoreDeviceObjects()

// Desc: Initialize scene objects.

//-----------------------------------------------------------------------------

HRESULT CMyD3DApplication::RestoreDeviceObjects()
{
    m_pFont->RestoreDeviceObjects();

    // Set the transform matrices

    D3DXVECTOR3 vEyePt    = D3DXVECTOR3( 0.0f, 0.0f, 2.0f );
    D3DXVECTOR3 vLookatPt = D3DXVECTOR3( 0.0f, 0.0f, 0.0f );
    D3DXVECTOR3 vUpVec    = D3DXVECTOR3( 0.0f, 1.0f, 0.0f );
    D3DXMATRIX  matWorld, matView, matProj;
    
    D3DXMatrixIdentity( &matWorld );
    D3DXMatrixLookAtLH( &matView, &vEyePt, &vLookatPt, &vUpVec );
    FLOAT fAspect = m_d3dsdBackBuffer.Width / (FLOAT)m_d3dsdBackBuffer.Height;
    D3DXMatrixPerspectiveFovLH( &matProj, D3DX_PI/4, fAspect, 1.0f, 500.0f );
    
    m_pd3dDevice->SetTransform( D3DTS_WORLD,      &matWorld );
    m_pd3dDevice->SetTransform( D3DTS_VIEW,       &matView );
    m_pd3dDevice->SetTransform( D3DTS_PROJECTION, &matProj );


	// fill the vertex buffer with the new data

    D3DVIEWPORT8 vp;
    m_pd3dDevice->GetViewport(&vp);

    // Initialize four vertices for rendering two triangles

    CUSTOMVERTEX cvVertices[] =
    {
        {  0.0f,  0.0f, 0.5f, 1.0f, 0.0f, 0.0f, }, // x, y, z, rhw, tu, tv

		{  (float)vp.Width,  0.0f, 0.5f, 1.0f, 1.0f, 0.0f, },
        {  (float)vp.Width, (float)vp.Height, 0.5f, 1.0f, 1.0f, 1.0f, },
        {  0.0f, (float)vp.Height, 0.5f, 1.0f, 0.0f, 1.0f},
    };

	m_dwSizeofVertices = sizeof(cvVertices);

    // Create the vertex buffer

    if( FAILED( m_pd3dDevice->CreateVertexBuffer( m_dwSizeofVertices,
                                                  0, D3DFVF_CUSTOMVERTEX,
                                                  D3DPOOL_MANAGED, &m_pVB ) ) )
        return E_FAIL;

    VOID* pVertices;
    if( FAILED( m_pVB->Lock( 0, m_dwSizeofVertices, (BYTE**)&pVertices, 0 ) ) )
        return E_FAIL;
    memcpy( pVertices, cvVertices, m_dwSizeofVertices);
    m_pVB->Unlock();
  
   return S_OK;
}

//-----------------------------------------------------------------------------

// Name: InvalidateDeviceObjects()

// Desc: Called when the app is exiting, or the device is being changed,

//       this function deletes any device dependent objects.

//-----------------------------------------------------------------------------

HRESULT CMyD3DApplication::InvalidateDeviceObjects()
{
    m_pFont->InvalidateDeviceObjects();
    SAFE_RELEASE( m_pVB );
   return S_OK;
}

//-----------------------------------------------------------------------------

// Name: DeleteDeviceObjects()

// Desc: Called when the app is exiting, or the device is being changed,

//       this function deletes any device dependent objects.

//-----------------------------------------------------------------------------

HRESULT CMyD3DApplication::DeleteDeviceObjects()
{
    m_pFont->DeleteDeviceObjects();
    SAFE_RELEASE( m_pBackgroundTexture );
   return S_OK;
}


//-----------------------------------------------------------------------------

// Name: FinalCleanup()

// Desc: Called before the app exits, this function gives the app the chance

//       to cleanup after itself.

//-----------------------------------------------------------------------------

HRESULT CMyD3DApplication::FinalCleanup()
{
   return S_OK;
}

//-----------------------------------------------------------------------------

// Name: ConfirmDevice()

// Desc: Called during device intialization, this code checks the device

//       for some minimum set of capabilities

//-----------------------------------------------------------------------------

HRESULT CMyD3DApplication::ConfirmDevice( D3DCAPS8* pCaps, DWORD dwBehavior, 
                                          D3DFORMAT Format )
{
    return S_OK;
}

  

  
	//m_cltRect are of type RECT

	GetClientRect(m_hwnd, &m_cltRect);

	//Store the new width and height values with a small calculation

	m_dwCreationWidth = m_cltRect.right  - m_cltRect.Left; 
	m_dwCreationHeight = m_cltRect.bottom - m_cltRect.Top;

  

  
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