1 Reply Latest reply on Mar 19, 2008 10:36 PM by michael.chu

    Help with using double-precision on a 3870 board

      How can I use Microsoft DirectX to get 64-bit float data to the GPU?

      I'd like to do some GPGPU work with my Radeon 3870 board, but I'd prefer to use DirectX rather than the AMD SDK.

      Is there a way to format input data (texture?) and output data (render target?) as FP64? How can that be done?

      Another related issue... I have Vista 64 Ultimate, the latest Catalist drivers (downloaded yesterday), DirectX 10.1 (also yesterday), yet the DirectX Caps Viewer shows my Pixel and Vertex shader version support as 3.0. Shouldn't it say 4.1?

      Thanks much for any and all help :-)