void LuxRenderer::createAreaLightMesh(mtlu_MayaObject *obj)
{
MString meshName("");
MFnDependencyNode depFn(obj->mobject);
MObject otherSideObj = getOtherSideNode(MString("mtlu_areaLight_geo"), obj->mobject);
if( otherSideObj != MObject::kNullObj)
{
}else{
int indices[6] = {0,1,2,2,3,0};
float floatPointArray[12] = {-1, -1, 0,
-1, 1, 0,
1, 1, 0,
1, -1, 0};
float floatNormalArray[12] = {0,0,-1,
0,0,-1,
0,0,-1,
0,0,-1};
ParamSet triParams = CreateParamSet();
triParams->AddInt("indices", indices, 6);
triParams->AddPoint("P", floatPointArray, 4);
triParams->AddNormal("N", floatNormalArray, 4);
lux->transformBegin();
float fm[16];
MMatrix tm = obj->transformMatrices[0];
setZUp(tm, fm);
this->lux->transform(fm);
this->lux->shape("trianglemesh", boost::get_pointer(triParams));
lux->transformEnd();
}
}
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;
}
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";
}