Hi,
o7p9bxbnyj has left the following comment at Update rt to utilize new ray
sampling functions #2
https://www.google-melange.com/gci/task/view/google/gci2014/6466077978525696:
status
This patch includes the changes from the last task (since those were
definitely not ready for production) and adds another 5.75-6hrs work which
modifies those changes so that a) orthogonal rendering works correctly
without modifications to rt_gen_rect(), and b) perspective rendering is
(mostly) supported. There are currently two problems with the patch:
Perspective rendering tolerances: the perspective rendering appears to
produce pixel coordinates that differ from the original coordinates by only
at most 1e-7, but this is still enough to cause regress-solids and
regress-shaders to fail. I've spent a lot of the time on this task trying
to tweak various bits of code to get it even closer, but ultimately I can't
seem to get too far past this 1e-7; since it shows up very intermittently
and seemingly at random, I'm fairly certain that it is floating point
rounding error.
Data conversion work related to rt_gen* function interfaces. I'd like to
convert the struct xrays information to be based on an array and write a
few access wrappers around struct xrays to make it possible to change the
representation in the future, removing most of the code related to moving
data out of an xrays list and into a struct xray * array.
Greetings,
The Google Open Source Programs Team
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