I'm trying to do a environment that collects all the results for all the
shading points in a RSL plug-in. I git grid aligned artifacts when I do the
following:
253 float *envResult, *dirData;
254 int resultStride, dirStride;
255 argv[0]->GetData(&envResult, &resultStride);
256 argv[1]->GetData(&dirData, &dirStride);
257 RslStringIter filename(argv[2]);
258
259 // Convert integer runflags to chars.
260 unsigned int numPoints;
261 const unsigned int* prmanRunFlags = rslContext->GetRunFlags(&numPoints);
262 Runflag* runFlags = (Runflag*) alloca(numPoints * sizeof(Runflag));
263 for (unsigned int i = 0; i < numPoints; ++i)
264 runFlags[i] = (Runflag) prmanRunFlags[i];
265
266 Imath::V3f* dirVecData = reinterpret_cast<Imath::V3f*>(dirData);
267 int dirVecStride = dirStride / 3;
268 OpenImageIO::VaryingRef<Imath::V3f> dirRef(dirVecData, dirVecStride);
269
270 Imath::V3f zeroVec(0.0f, 0.0f, 0.0f);
271 OpenImageIO::VaryingRef<Imath::V3f> zero(&zeroVec, 0);
272
273 OpenImageIO::TextureOptions opts(gTexOpts);
274 bool ok = gTexSys->environment(ustring(*filename), opts,
275 runFlags, 0, numPoints,
276 dirRef, zero, zero, envResult);
What am I doing wrong here? I've tried it without the division by 3 on the
stride. That didn't work. I am able to get the single-point environment
lookups to work.
Thanks,
Ryan
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