On Sun, Mar 19, 2017 at 10:13 PM, Shailesh Tripathi , B.Tech., Electronics
Engg., IIT (BHU), Varanasi (INDIA) <shailesh.tripathi.ec...@iitbhu.ac.in>
wrote:
> ...
> 1. How to use these functions '*rt_poly_roots', 'bu_log'*, *'bn_pr_roots'
> *and '*VPRINT*' in the kernels (.cl file)
>
No text manipulation and text output functions (e.g. bu_log, bn_pr_roots,
etc) are supported on the OpenCL library right now. So you can just comment
those out.
OpenCL does have a native library 'printf' function but in my experience,
back when I implemented the OpenCL librt port, the implementation of the
function is highly flaky on GPUs to say the least.
'rt_poly_roots' is available. It's implemented in 'solver.cl', and the
function definition is at 'common.cl'.
> 2. Why are functions like '*RT_GET_SEG' *eliminated in the the kenels and
> how does *'BU_LIST_INSERT(&(seghead->l), &(segp->l));* ' be equivalent to
> '*do_segp(res, idx, &hits[0], &hits[1]);' *?
>
You can just access struct members directly.
As for the linked list manipulation functions, OpenCL does not support
device side dynamic memory allocation. The data structures are currently
passed as fixed size arrays allocated from the CPU side.
--
Vasco Alexandre da Silva Costa
PhD in Computer Engineering (Computer Graphics)
Instituto Superior Técnico/University of Lisbon, Portugal
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