Alpha Bypassing
Author
I want to write to the AlphaChannel(Deep,...) and use Opcity(8 Bit SrcAlpha + InvScrAlpha) in a single pass.
Has anyone done ist ??
I have done this before, but in a bad hack.
I am rendering the scene into a texture. Setting the texture i am rendering in stage 0 and the base texture in Stage 1. Then im am "lrp" tex0.rgb and tex1.rgb by tex1.a. Then setting alpha to the value i want.
It works but is not nice to read a texture witch is the aktuell rendertarget. And don´t try to EMBM the input tex0, maybe it works(ATI) but most times you see the titels, or artifacts.
Has anyone a better idea for this ???
First change the alpha channel of the material being used by
the mesh. Then make the following:
Kamikaze
the mesh. Then make the following:
p_D3Ddevice->SetRenderState( D3DRS_ALPHABLENDENABLE, true );p_D3Ddevice->SetRenderState( D3DRS_SRCBLEND, D3DBLEND_SRCALPHA );p_D3Ddevice->SetRenderState( D3DRS_DESTBLEND, D3DBLEND_INVSRCALPHA );pMeshMaterials[0].Diffuse.a = 0.5f; //Set the opacity of the meshp_D3Ddevice->SetMaterial( &pMeshMaterials[0] ); //Set the material being used to render the meshp_D3Ddevice->SetTexture( 0, pMeshTextures[0] ); //Set the texture being used to render the meshpMesh->DrawSubset(0); // Render the mesh; Kamikaze
Author
I ment I want to use the alpha channel for ohter thing than Opcity
By using
"p_D3Ddevice->SetRenderState( D3DRS_ALPHABLENDENABLE, true );"
I have Opctiy Alpha in the Rendertarget, but I want deep in alpha channel in a singel pass.
By using
"p_D3Ddevice->SetRenderState( D3DRS_ALPHABLENDENABLE, true );"
I have Opctiy Alpha in the Rendertarget, but I want deep in alpha channel in a singel pass.
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