Jon Smirl wrote:
On Tue, 22 Aug 2006 22:06:36 -0700, James Richard Tyrer wrote:
Jared Putnam wrote:
The weaknesses of GPUs are:
There is no support for integers or fixed point.
Actually, this isn't a weakness. IIUC, GPUs use unsigned integers only
for control functions. Is there really a need for signed integers? And,
AFAIK, fixed point only exists in software.
DirectX 10 adds a requirement for integer support in the shaders.
I presume that you mean signed integers as data.
Is there a reason for this?
What size integers are required?
Obviously, the pixel output needs to be converted to integer (which
would [or should] actually be considered fixed point if used in
calculations), but I didn't think that the shader did that. Hardware
conversion would be the most efficient for that.
--
JRT
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