I know what you're after but don't know the answer.
However, for DX, find a copy of MFCTEX or D3DMULTEX and for OGL find OGLMULTEX. These allow you to test the available blend modes. I could try if for you but, frankly, can't underatand the DX7 documentation on blend modes. Normally, I have to go by the result (which means a lot of trial and error) rather than the description.
However, for DX, find a copy of MFCTEX or D3DMULTEX and for OGL find OGLMULTEX. These allow you to test the available blend modes. I could try if for you but, frankly, can't underatand the DX7 documentation on blend modes. Normally, I have to go by the result (which means a lot of trial and error) rather than the description.