tex1.cpp

This will show you how to texture a background in DirectX THis was brought to you by Lost Side Dead

//-----------------------------------------------------------------------------
// File: tex1.cpp
//
// Desc: Example code showing how to use a texture as background
//
//       Note: This code uses the D3D Framework helper library.
//
// Copyright (c) 2001 Sean Murphy
//-----------------------------------------------------------------------------
#define D3D_OVERLOADS
#define STRICT
#include "D3DApp.h"
#include "D3DTextr.h"
#include "D3DUtil.h"
#include "D3DMath.h"



//-----------------------------------------------------------------------------
// Name: class CMyD3DApplication
// Desc: Application class. The base class provides just about all the
//       functionality we want, so we're just supplying stubs to interface with
//       the non-C++ functions of the app.
//-----------------------------------------------------------------------------
class CMyD3DApplication : public CD3DApplication
{
    D3DTLVERTEX m_Background[4];           // Vertices used to render the backdrop
    FLOAT       m_fStartTimeKey;           // Time reference for calculations

    static HRESULT ConfirmDevice( DDCAPS* pddDriverCaps, 
                                  D3DDEVICEDESC7* pd3dDeviceDesc );

protected:
    HRESULT OneTimeSceneInit();
    HRESULT InitDeviceObjects();
    HRESULT DeleteDeviceObjects();
    HRESULT Render();
    HRESULT FrameMove( FLOAT fTimeKey );
    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 strCmdLine, INT )
{
    CMyD3DApplication d3dApp;

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

    return d3dApp.Run();
}


//-----------------------------------------------------------------------------
// Name: CMyD3DApplication()
// Desc: Application constructor. Sets attributes for the app.
//-----------------------------------------------------------------------------
CMyD3DApplication::CMyD3DApplication()
                  :CD3DApplication()
{
    m_strWindowTitle  = TEXT( "Tex1: Smashing a texture at the background" );
    m_bAppUseZBuffer  = FALSE;
    m_bAppUseStereo   = TRUE;
    m_bShowStats      = TRUE;
    m_fnConfirmDevice = ConfirmDevice;

    m_fStartTimeKey   = 0.0f;
}


//-----------------------------------------------------------------------------
// Name: OneTimeSceneInit()
// Desc: Called during initial app startup, this function performs all the
//       permanent initialization.
//-----------------------------------------------------------------------------
HRESULT CMyD3DApplication::OneTimeSceneInit()
{
    // Initializes vertices used to render the background
    D3DVECTOR vFar = D3DVECTOR( 0.0f, 0.0f, 0.5f );
    m_Background[0] = D3DTLVERTEX( vFar, 0.5f, 0xffffffff, 0, 0.0f, 1.0f );
    m_Background[1] = D3DTLVERTEX( vFar, 0.5f, 0xffffffff, 0, 0.0f, 0.0f );
    m_Background[2] = D3DTLVERTEX( vFar, 0.5f, 0xffffffff, 0, 1.0f, 1.0f );
    m_Background[3] = D3DTLVERTEX( vFar, 0.5f, 0xffffffff, 0, 1.0f, 0.0f );

    // Load in textures
    D3DTextr_CreateTextureFromFile( "lake.bmp" );

    return S_OK;
}


//-----------------------------------------------------------------------------
// Name: FrameMove()
// Desc: Called once per frame, the call is the entry point for animating
//       the scene.
//-----------------------------------------------------------------------------
HRESULT CMyD3DApplication::FrameMove( FLOAT fTimeKey )
{
    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()
{

    // Begin the scene
    if( SUCCEEDED( m_pd3dDevice->BeginScene() ) )
    {
        // Draw the background
        m_pd3dDevice->SetTexture( 0, D3DTextr_GetSurface("lake.bmp") );
        m_pd3dDevice->DrawPrimitive( D3DPT_TRIANGLESTRIP, D3DFVF_TLVERTEX,
                                     m_Background, 4, 0 );

        // End the scene.
        m_pd3dDevice->EndScene();
    }

    return S_OK;
}




//-----------------------------------------------------------------------------
// Name: InitDeviceObjects()
// Desc: Initialize scene objects
//-----------------------------------------------------------------------------
HRESULT CMyD3DApplication::InitDeviceObjects()
{
    D3DTextr_RestoreAllTextures( m_pd3dDevice );

    // Set up the dimensions for the background image
    D3DVIEWPORT7 vp;
    m_pd3dDevice->GetViewport(&vp);
    m_Background[0].sy = (FLOAT)vp.dwHeight;
    m_Background[2].sy = (FLOAT)vp.dwHeight;
    m_Background[2].sx = (FLOAT)vp.dwWidth;
    m_Background[3].sx = (FLOAT)vp.dwWidth;

    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()
{
    D3DTextr_DestroyTexture( "lake.bmp" );

    return S_OK;
}




//-----------------------------------------------------------------------------
// Name: DeleteDeviceObjects()
// Desc: Called when the app is exitting, or the device is being changed,
//       this function deletes any device dependant objects.
//-----------------------------------------------------------------------------
HRESULT CMyD3DApplication::DeleteDeviceObjects()
{
    D3DTextr_InvalidateAllTextures();

    return S_OK;
}




//-----------------------------------------------------------------------------
// Name: ConfirmDevice()
// Desc: Called during device intialization, this code checks the device
//       for some minimum set of capabilities
//-----------------------------------------------------------------------------
HRESULT CMyD3DApplication::ConfirmDevice( DDCAPS* pddDriverCaps,
                                          D3DDEVICEDESC7* pd3dDeviceDesc )
{
    return S_OK;
}