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Rearrange the main render loop... again.

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Using one stream with two pagelocked host buffers allows us to keep the
GPU work queue full without pegging the CPU, and also reduces the
incidences where a host buffer will get overwritten before it can be
written. devtid() was flaky, so this patch also introduces a ringbuffer
to handle the 'slots' concept. It also introduces an adaptive number of
temporal samples, which improves efficiency but also killed the
assumption that (ntemporal_samples % 256 == 0), which required some
additional fixes.
This commit is contained in:
Steven Robertson
2011-10-28 08:30:36 -04:00
parent 15f88383b1
commit 185823ad55
5 changed files with 127 additions and 113 deletions
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3
cuburn/code/interp.py
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@ -227,8 +227,9 @@ class GenomePacker(HunkOCode):
__global__
void interp_{{tname}}({{tname}}* out, float *times, float *knots,
float tstart, float tstep, mwc_st *rctxes) {
float tstart, float tstep, mwc_st *rctxes, int maxid) {
int id = gtid();
if (id >= maxid) return;
out = &out[id];
mwc_st rctx = rctxes[id];
float time = tstart + id * tstep;