/* called by the C++ code to render */
extern "C" void device_render (int* pixels,
const unsigned int width,
const unsigned int height,
const float time,
const ISPCCamera& camera)
{
float t0 = 0.7f*time;
float t1 = 1.5f*time;
/* rotate instances around themselves */
LinearSpace3fa xfm;
xfm.vx = Vec3fa(cos(t1),0,sin(t1));
xfm.vy = Vec3fa(0,1,0);
xfm.vz = Vec3fa(-sin(t1),0,cos(t1));
/* calculate transformations to move instances in cirle */
for (int i=0; i<4; i++) {
float t = t0+i*2.0f*float(pi)/4.0f;
instance_xfm[i] = AffineSpace3fa(xfm,2.2f*Vec3fa(+cos(t),0.0f,+sin(t)));
}
/* calculate transformations to properly transform normals */
for (int i=0; i<4; i++)
normal_xfm[i] = transposed(rcp(instance_xfm[i].l));
/* set instance transformations */
rtcSetTransform2(g_scene,g_instance0,RTC_MATRIX_COLUMN_MAJOR_ALIGNED16,(float*)&instance_xfm[0],0);
rtcSetTransform2(g_scene,g_instance1,RTC_MATRIX_COLUMN_MAJOR_ALIGNED16,(float*)&instance_xfm[1],0);
rtcSetTransform2(g_scene,g_instance2,RTC_MATRIX_COLUMN_MAJOR_ALIGNED16,(float*)&instance_xfm[2],0);
rtcSetTransform2(g_scene,g_instance3,RTC_MATRIX_COLUMN_MAJOR_ALIGNED16,(float*)&instance_xfm[3],0);
/* update scene */
rtcUpdate(g_scene,g_instance0);
rtcUpdate(g_scene,g_instance1);
rtcUpdate(g_scene,g_instance2);
rtcUpdate(g_scene,g_instance3);
rtcCommit (g_scene);
/* render all pixels */
const int numTilesX = (width +TILE_SIZE_X-1)/TILE_SIZE_X;
const int numTilesY = (height+TILE_SIZE_Y-1)/TILE_SIZE_Y;
parallel_for(size_t(0),size_t(numTilesX*numTilesY),[&](const range<size_t>& range) {
const int threadIndex = (int)TaskScheduler::threadIndex();
for (size_t i=range.begin(); i<range.end(); i++)
renderTileTask((int)i,threadIndex,pixels,width,height,time,camera,numTilesX,numTilesY);
});
}
void Scene::embreeInit(RTCDevice device) {
Embree.scene = rtcDeviceNewScene(device, EMBREE_SFLAGS_SCENE, EMBREE_AFLAGS_SCENE);
for (uint i = 0; i < objects.size(); i++) {
objects[i]->embreeInit(device);
uint instID = rtcNewInstance2(Embree.scene, objects[i]->Embree.scene);
rtcSetTransform2(Embree.scene, instID, RTC_MATRIX_COLUMN_MAJOR_ALIGNED16, objects[i]->matrix.e);
Embree.instIDmap[instID] = objects[i];
}
rtcCommit(Embree.scene);
}
extern "C" void ispcSetTransform2 (RTCScene scene, unsigned geomID, RTCMatrixType layout, const float* xfm, size_t timeStep) {
return rtcSetTransform2(scene,geomID,layout,xfm,timeStep);
}
