Feature Request: Fetch4

Discussion created by on Sep 15, 2008
Latest reply on Sep 16, 2008 by
I think Fetch4 is a very useful feature for working with single-channel data.

From the GZA, I am able to produce fetch4 IL code from Pixel Shader 4.1, by using the Gather method of the texture object. The ASM for fetch4 is even there (in the GZA).

But trying to use the IL code produced by GZA result in compilation error by CAL CL (1.1 & 1.2).

Trying to assemble the ASM produced by GZA and although the program is able to run, but it returned invalid value.

Or is there other alternative that can achieve the efficiency of fetch4 for single-channel data? What about the SAMPLE_L (in which the doc is lacking in explaining it)?