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Debugging a DVI signal with DirectX

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dmance    122
I''m new to shaders - which we hope to use for "non-graphics" manipulation of bytes in surfaces for hardware debugging. For example, when you display a 32bpp RGBA surface, you lose the ''A'' (since the output surface that gets sent to the DVI monitor is only 24bpp). I want to preserve and transmit the ''A'' along the DVI. It is possible to ''wrap'' or ''fool'' DirectX into packing a set of 32bpp RGBA-RGBA-RGBA-... pixels into set of 24bpp RGB-ARG-BAR-GBA-RGB-... etc. Can a shader do this? A blit operation - or is it only via hand coding a manual copy operation... dmance

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