Will Usher
078c589aaa
Use an enum + switch statements to avoid issues/limitations with function ptrs. Renable volumes with OpenVKL when running on CPU w/ enable volumes Put both CPU and GPU modules behind CMake flags workaround odd bug with AO renderer and intervals Add spheres geometry and port to use Embree sphere point Push math constants for RNG to USM instead of in global constant WA for `Material_dispatch_getTransparency` hang, working path tracer Re-enable subdivision surfaces for CPU-only Port Texture2D to use switch statement dispatch Migrate all materials to switch dispatch Add option for large grf, does improve performance Workaround for TextureParam get3f bug Update headers and APIs for L0 interop header updates/deprecations
61 lines
1.8 KiB
Plaintext
61 lines
1.8 KiB
Plaintext
// Copyright 2009 Intel Corporation
|
|
// SPDX-License-Identifier: Apache-2.0
|
|
|
|
#ifdef OSPRAY_TARGET_DPCPP
|
|
#include "rkcommon/math/math.h"
|
|
#endif
|
|
|
|
// ospray
|
|
#include "GeometricModel.ih"
|
|
#include "math/Distribution1D.ih"
|
|
#include "render/Material.ih"
|
|
// c++ shared
|
|
#include "common/InstanceShared.h"
|
|
|
|
OSPRAY_BEGIN_ISPC_NAMESPACE
|
|
|
|
export uniform int GeometricModel_gatherEmissivePrimIDs(void *uniform _model,
|
|
void *uniform _renderer,
|
|
void *uniform _instance,
|
|
int *uniform primIDs,
|
|
float *uniform distribution,
|
|
uniform float &pdf)
|
|
{
|
|
GeometricModel *uniform model = (GeometricModel * uniform) _model;
|
|
const Renderer *uniform renderer = (Renderer * uniform) _renderer;
|
|
const Geometry *uniform geo = model->geom;
|
|
const Instance *uniform instance = (Instance * uniform) _instance;
|
|
|
|
// create the list of emissive primitive IDs
|
|
uniform int32 numEmissivePrims = 0;
|
|
#ifdef OSPRAY_TARGET_DPCPP
|
|
// DPC++ execution in a thread is scalar
|
|
for (int primID = 0; primID < geo->numPrimitives; ++primID) {
|
|
#else
|
|
foreach (primID = 0 ... geo->numPrimitives) {
|
|
#endif
|
|
Material *mat =
|
|
(Material *)GeometricModel_getMaterial(model, renderer, primID);
|
|
const vec3f emission = mat->emission;
|
|
if (reduce_max(emission) > 0.f) {
|
|
int offset = exclusive_scan_add(1);
|
|
|
|
primIDs[numEmissivePrims + offset] = primID;
|
|
numEmissivePrims += reduce_add(1);
|
|
}
|
|
}
|
|
|
|
// create the sampling distribution
|
|
// TODO: use emissive power instead of just area
|
|
// TODO: motion blur can introduce scale, which means areas cannot
|
|
// accurately be precomputed
|
|
// TODO: Can stay as a ptr call if not moved to GPU
|
|
geo->getAreas(geo, primIDs, numEmissivePrims, instance->xfm, distribution);
|
|
pdf = model->areaPDF =
|
|
1.f / Distribution1D_create(numEmissivePrims, distribution);
|
|
|
|
return numEmissivePrims;
|
|
}
|
|
|
|
OSPRAY_END_ISPC_NAMESPACE
|