HRESULT CMyD3DApplication::DrawMeshData(SMeshData *pMeshData)
{
// Set diffuse blending for alpha set in vertices
m_pd3dDevice->SetRenderState( D3DRS_ALPHABLENDENABLE, TRUE );
m_pd3dDevice->SetRenderState( D3DRS_SRCBLEND, D3DBLEND_SRCALPHA );
m_pd3dDevice->SetRenderState( D3DRS_DESTBLEND, D3DBLEND_INVSRCALPHA );
// Enable alpha testing (skips pixels with less than a certain alpha.)
if( m_d3dCaps.AlphaCmpCaps & D3DPCMPCAPS_GREATEREQUAL )
{
m_pd3dDevice->SetRenderState( D3DRS_ALPHATESTENABLE, TRUE );
m_pd3dDevice->SetRenderState( D3DRS_ALPHAREF, 0x08 );
m_pd3dDevice->SetRenderState( D3DRS_ALPHAFUNC, D3DCMP_GREATEREQUAL );
}
// Set and draw each of the materials in the mesh
for( DWORD iMaterial=0; iMaterial < m_dwNumMaterials; iMaterial++ )
{
m_pd3dDevice->SetMaterial( &m_pMeshMaterials[iMaterial] );
m_pd3dDevice->SetTexture( 0, m_pMeshTextures[iMaterial] );
if( !m_bShowStrips && !m_bShowSingleStrip)
{
pMeshData->m_pMesh->DrawSubset( iMaterial );
}
}
// Restore Alpha state
m_pd3dDevice->SetRenderState( D3DRS_ALPHATESTENABLE, FALSE );
m_pd3dDevice->SetRenderState( D3DRS_ALPHABLENDENABLE, FALSE );
return S_OK;
}
HRESULT CMyD3DApplication::RestoreDeviceObjects()
{
m_pd3dDevice->SetTextureStageState( 0, D3DTSS_ALPHAOP, D3DTOP_SELECTARG1 );
m_pd3dDevice->SetTextureStageState( 0, D3DTSS_ALPHAARG1, D3DTA_TEXTURE );
}
alpha channel
Author
I am trying to render textures with alpha channel. Below is the code. I am getting problem with alpha channel which is showing blue color around the object having alpha channel. Grill.dds file is used for grill texture.
Quote:Original post by Pushapjit
I am trying to render textures with alpha channel. Below is the code. I am getting problem with alpha channel which is showing blue color around the object having alpha channel. Grill.dds file is used for grill texture.
*** Source Snippet Removed ***
You're code looks overly complex. To just get alpha blending all you need to do is:
m_pd3dDevice->SetRenderState( D3DRS_ALPHABLENDENABLE, TRUE );m_pd3dDevice->SetRenderState( D3DRS_SRCBLEND, D3DBLEND_SRCALPHA );m_pd3dDevice->SetRenderState( D3DRS_DESTBLEND, D3DBLEND_INVSRCALPHA );m_pd3dDevice->SetRenderState( 0, D3DTSS_ALPHAARG1, D3DTA_TEXTURE );That's it. No alpha test is needed :)
This topic is closed to new replies.
Advertisement
Popular Topics
Advertisement