void LuxRenderer::defineFilm()
{
int width = this->mtlu_renderGlobals->imgWidth;
int height = this->mtlu_renderGlobals->imgHeight;
MString outputPath = this->mtlu_renderGlobals->basePath + "/" + this->mtlu_renderGlobals->imageName + "." + (int)this->mtlu_renderGlobals->currentFrame + ".lxs";
// file path without extension, will be added automatically by the renderer
MString fileName = this->mtlu_renderGlobals->imagePath + "/" + this->mtlu_renderGlobals->imageName + "." + (int)this->mtlu_renderGlobals->currentFrame;
const char *filename = fileName.asChar();
const int xres = width;
const int yres = height;
const bool write_png = true;
const int halttime = this->mtlu_renderGlobals->halttime;
const int haltspp = this->mtlu_renderGlobals->haltspp;
int displayinterval = 3;
ParamSet fp = CreateParamSet();
fp->AddInt("xresolution",&xres);
fp->AddInt("yresolution",&yres);
fp->AddBool("write_png",&write_png);
fp->AddString("filename",&filename);
if( halttime > 0)
fp->AddInt("halttime", &halttime);
if( haltspp > 0)
fp->AddInt("haltspp", &haltspp);
if( displayinterval > 0)
fp->AddInt("displayinterval", &displayinterval);
lux->film("fleximage", boost::get_pointer(fp));
}
void LuxRenderer::defineTriangleMesh(mtlu_MayaObject *obj, bool noObjectDef = false)
{
MObject meshObject = obj->mobject;
MStatus stat = MStatus::kSuccess;
MFnMesh meshFn(meshObject, &stat);
CHECK_MSTATUS(stat);
MItMeshPolygon faceIt(meshObject, &stat);
CHECK_MSTATUS(stat);
MPointArray points;
meshFn.getPoints(points);
MFloatVectorArray normals;
meshFn.getNormals( normals, MSpace::kWorld );
MFloatArray uArray, vArray;
meshFn.getUVs(uArray, vArray);
logger.debug(MString("Translating mesh object ") + meshFn.name().asChar());
MString meshFullName = obj->fullNiceName;
MIntArray trianglesPerFace, triVertices;
meshFn.getTriangles(trianglesPerFace, triVertices);
int numTriangles = 0;
for( size_t i = 0; i < trianglesPerFace.length(); i++)
numTriangles += trianglesPerFace[i];
// lux render does not have a per vertex per face normal definition, here we can use one normal and uv per vertex only
// So I create the triangles with unique vertices, normals and uvs. Of course this way vertices etc. cannot be shared.
int numPTFloats = numTriangles * 3 * 3;
logger.debug(MString("Num Triangles: ") + numTriangles + " num tri floats " + numPTFloats);
float *floatPointArray = new float[numPTFloats];
float *floatNormalArray = new float[numPTFloats];
float *floatUvArray = new float[numTriangles * 3 * 2];
logger.debug(MString("Allocated ") + numPTFloats + " floats for point and normals");
MIntArray triangelVtxIdListA;
MFloatArray floatPointArrayA;
MPointArray triPoints;
MIntArray triVtxIds;
MIntArray faceVtxIds;
MIntArray faceNormalIds;
int *triangelVtxIdList = new int[numTriangles * 3];
for( uint sgId = 0; sgId < obj->shadingGroups.length(); sgId++)
{
MString slotName = MString("slot_") + sgId;
}
int triCount = 0;
int vtxCount = 0;
for(faceIt.reset(); !faceIt.isDone(); faceIt.next())
{
int faceId = faceIt.index();
int numTris;
faceIt.numTriangles(numTris);
faceIt.getVertices(faceVtxIds);
MIntArray faceUVIndices;
faceNormalIds.clear();
for( uint vtxId = 0; vtxId < faceVtxIds.length(); vtxId++)
{
faceNormalIds.append(faceIt.normalIndex(vtxId));
int uvIndex;
faceIt.getUVIndex(vtxId, uvIndex);
faceUVIndices.append(uvIndex);
}
int perFaceShadingGroup = 0;
if( obj->perFaceAssignments.length() > 0)
perFaceShadingGroup = obj->perFaceAssignments[faceId];
//logger.info(MString("Face ") + faceId + " will receive SG " + perFaceShadingGroup);
for( int triId = 0; triId < numTris; triId++)
{
int faceRelIds[3];
faceIt.getTriangle(triId, triPoints, triVtxIds);
for( uint triVtxId = 0; triVtxId < 3; triVtxId++)
{
for(uint faceVtxId = 0; faceVtxId < faceVtxIds.length(); faceVtxId++)
{
if( faceVtxIds[faceVtxId] == triVtxIds[triVtxId])
{
faceRelIds[triVtxId] = faceVtxId;
}
}
}
uint vtxId0 = faceVtxIds[faceRelIds[0]];
uint vtxId1 = faceVtxIds[faceRelIds[1]];
uint vtxId2 = faceVtxIds[faceRelIds[2]];
uint normalId0 = faceNormalIds[faceRelIds[0]];
uint normalId1 = faceNormalIds[faceRelIds[1]];
uint normalId2 = faceNormalIds[faceRelIds[2]];
uint uvId0 = faceUVIndices[faceRelIds[0]];
uint uvId1 = faceUVIndices[faceRelIds[1]];
uint uvId2 = faceUVIndices[faceRelIds[2]];
floatPointArray[vtxCount * 3] = points[vtxId0].x;
floatPointArray[vtxCount * 3 + 1] = points[vtxId0].y;
floatPointArray[vtxCount * 3 + 2] = points[vtxId0].z;
floatNormalArray[vtxCount * 3] = normals[normalId0].x;
floatNormalArray[vtxCount * 3 + 1] = normals[normalId0].y;
floatNormalArray[vtxCount * 3 + 2] = normals[normalId0].z;
floatUvArray[vtxCount * 2] = uArray[uvId0];
floatUvArray[vtxCount * 2 + 1] = vArray[uvId0];
vtxCount++;
floatPointArray[vtxCount * 3] = points[vtxId1].x;
floatPointArray[vtxCount * 3 + 1] = points[vtxId1].y;
floatPointArray[vtxCount * 3 + 2] = points[vtxId1].z;
floatNormalArray[vtxCount * 3] = normals[normalId1].x;
floatNormalArray[vtxCount * 3 + 1] = normals[normalId1].y;
floatNormalArray[vtxCount * 3 + 2] = normals[normalId1].z;
floatUvArray[vtxCount * 2] = uArray[uvId1];
floatUvArray[vtxCount * 2 + 1] = vArray[uvId1];
vtxCount++;
floatPointArray[vtxCount * 3] = points[vtxId2].x;
floatPointArray[vtxCount * 3 + 1] = points[vtxId2].y;
floatPointArray[vtxCount * 3 + 2] = points[vtxId2].z;
floatNormalArray[vtxCount * 3] = normals[normalId2].x;
floatNormalArray[vtxCount * 3 + 1] = normals[normalId2].y;
floatNormalArray[vtxCount * 3 + 2] = normals[normalId2].z;
floatUvArray[vtxCount * 2] = uArray[uvId2];
floatUvArray[vtxCount * 2 + 1] = vArray[uvId2];
vtxCount++;
//logger.debug(MString("Vertex count: ") + vtxCount + " maxId " + ((vtxCount - 1) * 3 + 2) + " ptArrayLen " + (numTriangles * 3 * 3));
triangelVtxIdList[triCount * 3] = triCount * 3;
triangelVtxIdList[triCount * 3 + 1] = triCount * 3 + 1;
triangelVtxIdList[triCount * 3 + 2] = triCount * 3 + 2;
triCount++;
}
}
//generatetangents bool Generate tangent space using miktspace, useful if mesh has a normal map that was also baked using miktspace (such as blender or xnormal) false
//subdivscheme string Subdivision algorithm, options are "loop" and "microdisplacement" "loop"
//displacementmap string Name of the texture used for the displacement. Subdivscheme parameter must always be provided, as load-time displacement is handled by the loop-subdivision code. none - optional. (loop subdiv can be used without displacement, microdisplacement will not affect the mesh without a displacement map specified)
//dmscale float Scale of the displacement (for an LDR map, this is the maximum height of the displacement in meter) 0.1
//dmoffset float Offset of the displacement. 0
//dmnormalsmooth bool Smoothing of the normals of the subdivided faces. Only valid for loop subdivision. true
//dmnormalsplit bool Force the mesh to split along breaks in the normal. If a mesh has no normals (flat-shaded) it will rip open on all edges. Only valid for loop subdivision. false
//dmsharpboundary bool Try to preserve mesh boundaries during subdivision. Only valid for loop subdivision. false
//nsubdivlevels integer Number of subdivision levels. This is only recursive for loop subdivision, microdisplacement will need much larger values (such as 50). 0
bool generatetangents = false;
getBool(MString("mtlu_mesh_generatetangents"), meshFn, generatetangents);
int subdivscheme = 0;
const char *subdAlgos[] = {"loop", "microdisplacement"};
getInt(MString("mtlu_mesh_subAlgo"), meshFn, subdivscheme);
const char *subdalgo = subdAlgos[subdivscheme];
float dmscale;
getFloat(MString("mtlu_mesh_dmscale"), meshFn, dmscale);
float dmoffset;
getFloat(MString("mtlu_mesh_dmoffset"), meshFn, dmoffset);
MString displacementmap;
getString(MString("mtlu_mesh_displacementMap"), meshFn, displacementmap);
const char *displacemap = displacementmap.asChar();
bool dmnormalsmooth = true;
getBool(MString("mtlu_mesh_dmnormalsmooth"), meshFn, dmnormalsmooth);
bool dmnormalsplit = false;
getBool(MString("mtlu_mesh_dmnormalsplit"), meshFn, dmnormalsplit);
bool dmsharpboundary = false;
getBool(MString("mtlu_mesh_dmsharpboundary"), meshFn, dmsharpboundary);
int nsubdivlevels = 0;
getInt(MString("mtlu_mesh_subdivlevel"), meshFn, nsubdivlevels);
// a displacment map needs its own texture defintion
MString displacementTextureName = "";
if(displacementmap.length() > 0)
{
ParamSet dmParams = CreateParamSet();
dmParams->AddString("filename", &displacemap);
displacementTextureName = meshFn.name() + "_displacementMap";
this->lux->texture(displacementTextureName.asChar(), "float", "imagemap", boost::get_pointer(dmParams));
}
ParamSet triParams = CreateParamSet();
int numPointValues = numTriangles * 3;
int numUvValues = numTriangles * 3 * 2;
clock_t startTime = clock();
logger.info(MString("Adding mesh values to params."));
triParams->AddInt("indices", triangelVtxIdList, numTriangles * 3);
triParams->AddPoint("P", floatPointArray, numPointValues);
triParams->AddNormal("N", floatNormalArray, numPointValues);
triParams->AddFloat("uv", floatUvArray, numUvValues);
if( nsubdivlevels > 0)
triParams->AddInt("nsubdivlevels", &nsubdivlevels, 1);
triParams->AddBool("generatetangents", &generatetangents, 1);
triParams->AddString("subdivscheme", &subdalgo , 1);
if(displacementmap.length() > 0)
{
triParams->AddFloat("dmoffset", &dmoffset, 1);
triParams->AddFloat("dmscale", &dmscale, 1);
const char *dmft = displacementTextureName.asChar();
triParams->AddString("displacementmap", &dmft);
}
triParams->AddBool("dmnormalsmooth", &dmnormalsmooth, 1);
triParams->AddBool("dmnormalsplit", &dmnormalsplit, 1);
triParams->AddBool("dmsharpboundary", &dmsharpboundary, 1);
clock_t pTime = clock();
if(!noObjectDef)
this->lux->objectBegin(meshFullName.asChar());
this->lux->shape("trianglemesh", boost::get_pointer(triParams));
if(!noObjectDef)
this->lux->objectEnd();
clock_t eTime = clock();
logger.info(MString("Timing: Parameters: ") + ((pTime - startTime)/CLOCKS_PER_SEC) + " objTime " + ((eTime - pTime)/CLOCKS_PER_SEC) + " all " + ((eTime - startTime)/CLOCKS_PER_SEC));
return;
}
//static void processFiles(ParamSet ¶ms, std::set<string> &tmpFiles, std::iostream &stream) {
static void processFiles(ParamSet ¶ms, socket_stream_t &stream) {
LOG(LUX_DEBUG,LUX_NOERROR) << "Receiving file index";
string s = get_response(stream);
if (s == "FILE INDEX EMPTY") {
LOG(LUX_DEBUG,LUX_NOERROR) << "No files";
return;
}
if (s != "BEGIN FILE INDEX") {
throw std::runtime_error("Expected 'BEGIN FILE INDEX', got '" + s + "'");
}
stream << "BEGIN FILE INDEX OK" << "\n";
vector<std::pair<string, string> > neededFiles;
while (true) {
string paramName = get_response(stream);
if (paramName == "END FILE INDEX") {
LOG(LUX_DEBUG,LUX_NOERROR) << "End of file index";
break;
}
string filename = get_response(stream);
string hash = get_response(stream);
string empty = get_response(stream); // empty line
if (paramName == "" || filename == "" || hash == "" || empty != "") {
LOG( LUX_ERROR,LUX_SYSTEM)<< "Invalid file index entry "
<< "param: '" << paramName << "', "
<< "filename: '" << filename << "', "
<< "hash: '" << hash << "', "
<< "empty: '" << empty << "'";
stream << "FILE INDEX INVALID" << "\n";
return;
}
LOG(LUX_DEBUG,LUX_NOERROR) << "File param '" << paramName << "', filename '" << filename << "', hash '" << hash << "'";
boost::filesystem::path fname(filename);
boost::filesystem::path tfile("tmp_" + hash);
tfile.replace_extension(fname.extension());
//if (tmpFiles.find(tfile.string()) == tmpFiles.end()) {
boost::system::error_code ec;
if (!boost::filesystem::exists(tfile, ec)) {
LOG( LUX_INFO,LUX_NOERROR) << "Requesting file '" << filename << "' (as '" << tfile.string() << "')";
neededFiles.push_back(std::make_pair(hash, tfile.string()));
} else {
LOG( LUX_DEBUG,LUX_NOERROR) << "Using existing file '" << filename << "' (as '" << tfile.string() << "')";
}
// replace parameter
params.AddString(paramName, &tfile.string());
}
stream << "END FILE INDEX OK" << "\n";
// now lets grab the files we need
if (!read_response(stream, "BEGIN FILES"))
return;
stream << "BEGIN FILES OK" << "\n";
for (size_t i = 0; i < neededFiles.size(); i++) {
const string& hash(neededFiles[i].first);
const string& fname(neededFiles[i].second);
stream << hash << endl << flush;
if (!receiveFile(fname, hash, stream)) {
stream << "RESEND FILE" << endl << flush;
if (!receiveFile(fname, hash, stream))
throw std::runtime_error("Error receiving file '" + fname + "'");
}
stream << "FILE OK" << "\n";
//tmpFiles.insert(neededFiles[i].second);
}
stream << "END FILES" << "\n";
if (!read_response(stream, "END FILES OK"))
return;
}
void LuxRenderer::defineCamera()
{
std::shared_ptr<MayaScene> mayaScene = MayaTo::getWorldPtr()->worldScenePtr;
std::shared_ptr<RenderGlobals> renderGlobals = MayaTo::getWorldPtr()->worldRenderGlobalsPtr;
std::shared_ptr<MayaObject> mo = mayaScene->camList[0];
MMatrix cm = mo->dagPath.inclusiveMatrix();
MFnCamera camFn(mo->mobject);
this->transformCamera(mo.get(), renderGlobals->doMb && (mo->transformMatrices.size() > 1));
// lux uses the fov of the smallest image edge
double hFov = RadToDeg(camFn.horizontalFieldOfView());
double vFov = RadToDeg(camFn.verticalFieldOfView());
float fov = hFov;
int width, height;
renderGlobals->getWidthHeight(width, height);
if( height < width)
fov = vFov;
// focaldist
float focusDist = (float)camFn.focusDistance() * renderGlobals->sceneScale;
float focalLen = (float)camFn.focalLength();
float fStop = (float)camFn.fStop();
bool useDOF = false;
getBool(MString("depthOfField"), camFn, useDOF);
useDOF = useDOF && renderGlobals->doDof;
// hither, yon
float hither = (float)camFn.nearClippingPlane();
float yon = (float)camFn.farClippingPlane();
// render region
int left, bottom, right, top;
renderGlobals->getRenderRegion(left, bottom, right, top);
int ybot = (height - bottom);
int ytop = (height - top);
int ymin = ybot < ytop ? ybot : ytop;
int ymax = ybot > ytop ? ybot : ytop;
float lensradius = (focalLen / 1000.0) / ( 2.0 * fStop );
int blades = 0;
getInt(MString("mtlu_diaphragm_blades"), camFn, blades);
bool autofocus = false;
getBool(MString("mtlu_autofocus"), camFn, autofocus);
int dist = 0;
getInt(MString("mtlu_distribution"), camFn, dist);
logger.debug(MString("Lens distribution: ") + dist + " " + LensDistributions[dist]);
float power = 1.0f;
getFloat(MString("mtlu_power"), camFn, power);
const char *lensdistribution = LensDistributions[dist];
float shutterOpen = 0.0f;
float shutterClose = renderGlobals->mbLength;
ParamSet cp = CreateParamSet();
cp->AddFloat("fov", &fov);
cp->AddFloat("focaldistance", &focusDist);
cp->AddFloat("hither", &hither);
cp->AddFloat("yon", &yon);
cp->AddFloat("shutteropen", &shutterOpen);
cp->AddFloat("shutterclose", &shutterClose);
if( blades > 0)
cp->AddInt("blades", &blades);
if( useDOF )
{
cp->AddFloat("lensradius", &lensradius);
cp->AddBool("autofocus", &autofocus);
cp->AddString("distribution", &lensdistribution);
cp->AddFloat("power", &power);
}
lux->camera("perspective", boost::get_pointer(cp));
if( renderGlobals->exportSceneFile)
this->luxFile << "Camera \"perspective\" "<< "\"float fov\" [" << fov << "]" <<"\n";
}
int testSimpleScene() {
ParamSet params;
int xres = 500;
int yres = 500;
params.AddInt("xresolution", &xres, 1);
params.AddInt("yresolution", &yres, 1);
Transform t = LookAt(Point(0,0,0), Point(0,0,-100), Vector(0,1,0));
AnimatedTransform cam2world(&t, 0, &t, 0);
params.AddString("filename", new string("render.png"), 1);
//BoxFilter *filter = CreateBoxFilter(params);
GaussianFilter *filter = new GaussianFilter(3, 3, 0.001f);
ImageFilm *film = CreateImageFilm(params, filter);
PerspectiveCamera *camera = CreatePerspectiveCamera(params, cam2world, film);
//AdaptiveSampler *sampler = CreateAdaptiveSampler(params, film, camera);
//Sampler *sampler = CreateRandomSampler(params, film, camera);
//Sampler *sampler = CreateBestCandidateSampler(params, film, camera);
//Sampler *sampler = CreateHaltonSampler(params, film, camera);
//StratifiedSampler *sampler = CreateStratifiedSampler(params, film, camera);
bool jitter = false;
int xstart, xend, ystart, yend;
film->GetSampleExtent(&xstart, &xend, &ystart, ¥d);
int xsamp = 1;
int ysamp = 1;
StratifiedSampler *sampler = new StratifiedSampler(
xstart, xend, ystart, yend,
xsamp, ysamp,
jitter, camera->shutterOpen, camera->shutterClose);
//PathIntegrator *surfaceIg = CreatePathSurfaceIntegrator(params);
//DirectLightingIntegrator *surfaceIg = CreateDirectLightingIntegrator(params);
WhittedIntegrator *surfaceIg = CreateWhittedSurfaceIntegrator(params);
SingleScatteringIntegrator *volumeIg = CreateSingleScatteringIntegrator(params);
SamplerRenderer renderer(sampler, camera, surfaceIg, volumeIg, false);
VolumeRegion *volumeRegion = NULL;
vector<Light*> lights;
float il1[] = {1.f,1.f,1.f};
float il2[] = {2.f,0.5f,0.3f};
float il3[] = {0.f,0.2f,1.3f};
lights.push_back(new PointLight(Translate(Vector(2,2,0)), RGBSpectrum::FromRGB(il1)));
lights.push_back(new PointLight(Translate(Vector(-2,-2,-2)), RGBSpectrum::FromRGB(il2)));
lights.push_back(new PointLight(Translate(Vector(-2, 2,-2)), RGBSpectrum::FromRGB(il3)));
//(MCreatePointLight(Translate(Vector(2,2,0)), params));
//lights.push_back(CreatePointLight(Translate(Vector(0,4,0)), params));
Transform obj2world = Translate(Vector(0,0,-2));
Transform world2obj = Inverse(obj2world);
Sphere *sphere1 = CreateSphereShape(&obj2world, &world2obj, false, params);
Transform obj2world2 = Translate(Vector(0.7,0.7,2.6));
Transform world2obj2 = Inverse(obj2world2);
Sphere *sphere2 = CreateSphereShape(&obj2world2, &world2obj2, false, params);
TextureParams tparams(params, params, map<string, Reference<Texture<float> > >(),
map<string, Reference<Texture<Spectrum> > >());
MirrorMaterial *mirror = new MirrorMaterial(new ConstantTexture<Spectrum>(Spectrum(0.9f)), NULL);
ShinyMetalMaterial *metal = new ShinyMetalMaterial(
new ConstantTexture<Spectrum>(Spectrum(1.f)),
new ConstantTexture<float>(0.1f),
new ConstantTexture<Spectrum>(Spectrum(1.f)),
NULL); //CreateShinyMetalMaterial(Transform(), tparams);
GlassMaterial *glass = CreateGlassMaterial(Transform(), tparams);
//float c1[] = {0.f,10.99f,0.f};
float c1[] = {5.f,5.f,5.f};
Spectrum spec1 = RGBSpectrum::FromRGB(c1, SpectrumType::SPECTRUM_REFLECTANCE);
MatteMaterial *matte = new MatteMaterial(
new ConstantTexture<Spectrum>(spec1),
new ConstantTexture<float>(0.0f), NULL);
// Reference<Texture<Spectrum> > Kd = mp.GetSpectrumTexture("Kd", Spectrum(0.5f));
// Reference<Texture<float> > sigma = mp.GetFloatTexture("sigma", 0.f);
// Reference<Texture<float> > bumpMap = mp.GetFloatTextureOrNull("bumpmap");
// return ;
//CreateMatteMaterial(Transform(), tparams);
Reference<Primitive> prim1 = new GeometricPrimitive(sphere1, matte, NULL);
//Reference<Primitive> prim2 = new GeometricPrimitive(sphere2, metal, NULL);
vector<Reference<Primitive> > prims;
prims.push_back(prim1);
//prims.push_back(prim2);
Primitive *accel = CreateBVHAccelerator(prims, params);
Scene *scene = new Scene(accel, lights, volumeRegion);
// Scene(Primitive *accel, const vector<Light *> <s, VolumeRegion *vr);
//TODO:
// create scene
// step through to see that something happens
// start building minimal viable js version
// - unit test js functionality against similar c++ unit results
renderer.Render(scene);
film->WriteImage(1);
return 0;
}