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Device->SetRenderState(D3DRS_STENCILENABLE, true);
Device->SetRenderState(D3DRS_STENCILFUNC, D3DCMP_ALWAYS);
Device->SetRenderState(D3DRS_STENCILREF, 0x1);
Device->SetRenderState(D3DRS_STENCILMASK, 0xffffffff);
Device->SetRenderState(D3DRS_STENCILWRITEMASK, 0xffffffff);
Device->SetRenderState(D3DRS_STENCILZFAIL, D3DSTENCILOP_KEEP);
Device->SetRenderState(D3DRS_STENCILFAIL, D3DSTENCILOP_KEEP);
Device->SetRenderState(D3DRS_STENCILPASS, D3DSTENCILOP_REPLACE);
// disable writes to the depth and back buffers
Device->SetRenderState(D3DRS_ZWRITEENABLE, false);
Device->SetRenderState(D3DRS_ALPHABLENDENABLE, true);
Device->SetRenderState(D3DRS_SRCBLEND, D3DBLEND_ZERO);
Device->SetRenderState(D3DRS_DESTBLEND, D3DBLEND_ONE);
// re-enable depth writes
Device->SetRenderState( D3DRS_ZWRITEENABLE, true );
// only draw reflected teapot to the pixels where the mirror
// was drawn to.
Device->SetRenderState(D3DRS_STENCILFUNC, D3DCMP_EQUAL);
Device->SetRenderState(D3DRS_STENCILPASS, D3DSTENCILOP_KEEP); |
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