Where can i find some info on this? im trying to desin a console, and dont know how to go about it. thanks

The DirectX SDK Help file.

Look up D3DXMatrixOrthoLH in the index, for starters.

I made two functions in my render class Go3D() and Go2D().

Whenever i call Go2D() my scene disaperas, can somone check if i am going in ortho mode correctly?

thanks

void CRender::Go3D()
{
D3DXMatrixIdentity(&m_matProj);
D3DXMatrixPerspectiveFovLH( &m_matProj, D3DX_PI/4, 1.0f, 1.0f, 1000.0f );
m_pd3dDevice->SetTransform( D3DTS_PROJECTION, &m_matProj );
}

void CRender::Go2D()
{
D3DXMatrixOrthoLH(&m_matProj, m_pWindow->m_Width, m_pWindow->m_Height, 0.0f, 1.0f);
m_pd3dDevice->SetTransform(D3DTS_PROJECTION, &m_matProj);

}

[edited by - mess on September 15, 2002 12:01:11 AM]

http://24.43.48.130/b/Gatigy/CRender.cpp

thats my code if u can take a look gimme some pointers too.

thanks alot

I''ll take a look at your code a little later, but don''t forget to disable the z-buffer when you go into 2D mode, and enable it when you go into 3D mode.

I disabled it, and the quad still disapears when i move my camera.


//o-----------------------------------------------------------------------------------o
//| Go into 3d mode
//|
//o-----------------------------------------------------------------------------------o

void CRender::Go3D()
{
m_pd3dDevice->SetRenderState( D3DRS_ZENABLE, TRUE );
m_pd3dDevice->SetRenderState( D3DRS_ZENABLE, D3DZB_TRUE );
m_pd3dDevice->SetRenderState( D3DRS_ZWRITEENABLE, TRUE );
D3DXMatrixIdentity(&m_matProj);
D3DXMatrixPerspectiveFovLH( &m_matProj, D3DX_PI/4, 1.0f, 1.0f, 1000.0f );
m_pd3dDevice->SetTransform( D3DTS_PROJECTION, &m_matProj );
}

//o-----------------------------------------------------------------------------------o
//| Go into ortho mode
//|
//o-----------------------------------------------------------------------------------o

void CRender::Go2D()
{
m_pd3dDevice->SetRenderState( D3DRS_ZENABLE, FALSE );
m_pd3dDevice->SetRenderState( D3DRS_ZENABLE, D3DZB_FALSE );
m_pd3dDevice->SetRenderState( D3DRS_ZWRITEENABLE, FALSE );
D3DXMatrixIdentity(&m_matProj);
D3DXMatrixOrthoLH(&m_matProj, m_pWindow->m_Width, m_pWindow->m_Height, 1.0f, 1.0f);
m_pd3dDevice->SetTransform(D3DTS_PROJECTION, &m_matProj);
}

don''t forgett to reset your view/world matrices...

don''t forgett to reset your view/world matrices...

btw. you can also do the 2d-part with transformed vertices, if you don''t need matrix math... -> i.e. D3DFVF_XYRRHW

Okay, i changed the code a bit, now im not seeing anything, just a blank screen, please help

thanks

//o-----------------------------------------------------------------------------------o
//| Go into 3d mode
//|
//o-----------------------------------------------------------------------------------o

void CRender::Go3D()
{
D3DXMATRIX Identity;
D3DXMATRIX Matrix3D;
D3DXMatrixIdentity(&Identity);

m_pd3dDevice->SetRenderState( D3DRS_ZENABLE, TRUE );
m_pd3dDevice->SetRenderState( D3DRS_ZENABLE, D3DZB_TRUE );
m_pd3dDevice->SetRenderState( D3DRS_ZWRITEENABLE, TRUE );

D3DXMatrixPerspectiveFovLH( &Matrix3D, D3DX_PI/4, 1.0f, 1.0f, 1000.0f );
m_pd3dDevice->SetTransform( D3DTS_PROJECTION, &Matrix3D );

m_pd3dDevice->SetTransform(D3DTS_WORLD, &Identity);
m_pd3dDevice->SetTransform(D3DTS_VIEW, &Identity);
}

//o-----------------------------------------------------------------------------------o
//| Go into ortho mode
//|
//o-----------------------------------------------------------------------------------o

void CRender::Go2D()
{
D3DXMATRIX Identity;
D3DXMATRIX Matrix2D;
D3DXMatrixIdentity(&Identity);

m_pd3dDevice->SetRenderState( D3DRS_ZENABLE, FALSE );
m_pd3dDevice->SetRenderState( D3DRS_ZENABLE, D3DZB_FALSE );
m_pd3dDevice->SetRenderState( D3DRS_ZWRITEENABLE, FALSE );

D3DXMatrixOrthoLH(&Matrix2D, m_pWindow->m_Width, m_pWindow->m_Height, 5.0f, 1000.0f);
m_pd3dDevice->SetTransform(D3DTS_PROJECTION, &Matrix2D);

m_pd3dDevice->SetTransform(D3DTS_WORLD, &Identity);
m_pd3dDevice->SetTransform(D3DTS_VIEW, &Identity);
}