void OptiXRenderer::convertToOptiXScene(optix::Context context, int width, int height, float film_location) {
// Setup lighting
// TODO For now, we assume just one light
context->setEntryPointCount( 1 );
context->setRayGenerationProgram( 0, mScene->mLights[0]->getOptiXLight(context) );
// Exception program
context->setExceptionProgram( 0, context->createProgramFromPTXFile( "ptx/PhotonTracer.ptx", "exception" ) );
// Miss program
context->setMissProgram( 0, context->createProgramFromPTXFile( "ptx/PhotonTracer.ptx", "miss" ) );
// Geometry group
optix::GeometryGroup geometrygroup = context->createGeometryGroup();
geometrygroup->setChildCount( mScene->mObjects.size() + 1 );
geometrygroup->setAcceleration( context->createAcceleration("Bvh","Bvh") );
// Add objects
for(std::vector<RenderObject*>::size_type i = 0; i != mScene->mObjects.size(); i++) {
optix::GeometryInstance gi = context->createGeometryInstance();
// TODO we only support 1 material type per object
gi->setMaterialCount(1);
gi->setGeometry( mScene->mObjects[i]->getOptiXGeometry(context));
gi->setMaterial(0, mScene->mObjects[i]->getOptiXMaterial(context));
geometrygroup->setChild(i, gi);
}
// Create Camera
//
mCameraMat = new CameraMaterial(width, height, 1);
PlaneObject* plane = new PlaneObject(mCameraMat);
plane->setPosition(0, 0, film_location); //-65
mCameraObject = plane;
// Convert to OptiX
optix::GeometryInstance gi = context->createGeometryInstance();
gi->setMaterialCount(1);
gi->setGeometry( mCameraObject->getOptiXGeometry(context));
mCameraMatOptiX = mCameraObject->getOptiXMaterial(context);
mCameraMatOptiX["width"]->setInt(width);
mCameraMatOptiX["height"]->setInt(height);
gi->setMaterial(0, mCameraMatOptiX);
geometrygroup->setChild(mScene->mObjects.size(), gi);
context["top_object"]->set(geometrygroup);
}
void Material::registerMaterialWithShadowProgram( optix::Context & context, optix::Material & material )
{
if(!m_hasLoadedOptixAnyHitProgram)
{
m_optixAnyHitProgram = context->createProgramFromPTXFile( "DirectRadianceEstimation.cu.ptx", "gatherAnyHitOnNonEmitter");
m_hasLoadedOptixAnyHitProgram = true;
}
material->setAnyHitProgram(RayType::SHADOW, m_optixAnyHitProgram);
}
optix::Geometry PlaneObject::getOptiXGeometry(optix::Context context) {
optix::Geometry parallelogram = context->createGeometry();
parallelogram->setPrimitiveCount( 1u );
parallelogram->setBoundingBoxProgram( context->createProgramFromPTXFile("ptx/PlaneObject.ptx", "bounds" ) );
parallelogram->setIntersectionProgram( context->createProgramFromPTXFile("ptx/PlaneObject.ptx", "intersect" ) );
parallelogram["plane"]->setFloat( normal->x, normal->y, normal->z, normal->dotProduct(position));
// Move the anchor point
Vector3D anchor = *position;
anchor = anchor + (*up)*(-height/2);
anchor = anchor + (*right)*(-width/2);
parallelogram["anchor"]->setFloat( anchor.x, anchor.y, anchor.z );
Vector3D v1 = *up*width;
Vector3D v2 = *right*height;
v1 = v1 * (1/(v1.dotProduct(&v1)));
v2 = v2 * (1/(v2.dotProduct(&v2)));
parallelogram["v1"]->setFloat(v1.x, v1.y, v1.z );
parallelogram["v2"]->setFloat(v2.x, v2.y, v2.z );
return parallelogram;
}
optix::Material ColourMaterial::getOptiXMaterial(optix::Context context) {
optix::Program chp = context->createProgramFromPTXFile( "ptx/ColourMaterial.ptx", "closest_hit" );
optix::Material mat = context->createMaterial();
mat->setClosestHitProgram(0, chp);
mat["max_wavelength"]->setFloat(mColourWavelengthMax);
mat["min_wavelength"]->setFloat(mColourWavelengthMin);
mat["standard_deviation"]->setFloat(std);
mat["ideal_range"]->setFloat(ideal_range);
return mat;
}
optix::Geometry AABInstance::getOptixGeometry( optix::Context & context)
{
if(m_hasLoadedOptixPrograms == false)
{
m_programBoundingBox = context->createProgramFromPTXFile("AAB.cu.ptx", "boundingBox");
m_programIntersection = context->createProgramFromPTXFile("AAB.cu.ptx", "intersect");
m_hasLoadedOptixPrograms = true;
}
optix::Geometry geometry = context->createGeometry();
geometry->setPrimitiveCount(1u);
geometry->setBoundingBoxProgram(m_programBoundingBox);
geometry->setIntersectionProgram(m_programIntersection);
geometry["cuboidMin"]->setFloat( this->m_aab.min );
geometry["cuboidMax"]->setFloat( this->m_aab.max );
return geometry;
}
optix::Geometry SphereInstance::getOptixGeometry( optix::Context & context)
{
if(m_hasLoadedOptixPrograms == false)
{
m_programBoundingBox = context->createProgramFromPTXFile("Sphere.cu.ptx", "boundingBox");
m_programIntersection = context->createProgramFromPTXFile("Sphere.cu.ptx", "intersect");
m_hasLoadedOptixPrograms = true;
}
optix::Geometry sphere = context->createGeometry();
sphere->setPrimitiveCount(1);
sphere->setIntersectionProgram( m_programIntersection );
sphere->setBoundingBoxProgram( m_programBoundingBox );
sphere["radius"]->setFloat( this->m_sphere.radius );
sphere["center"]->setFloat( this->m_sphere.center );
return sphere;
}
optix::Material CameraMaterial::getOptiXMaterial(optix::Context context) {
optix::Program chp = context->createProgramFromPTXFile( "ptx/CameraMaterial.ptx", "closest_hit" );
optix::Material mat = context->createMaterial();
mat->setClosestHitProgram(0, chp);
mat["camera_size"]->setFloat(actualWidth, actualHeight);
mat["image_size"]->setInt(imageWidth, imageHeight);
mat["max_intensity"]->setInt(1);
mat["camera_gamma"]->setFloat(1.0f);
return mat;
}
optix::Material Glass::getOptixMaterial(optix::Context & context)
{
if(!m_optixMaterialIsCreated)
{
m_optixMaterial = context->createMaterial();
optix::Program radianceClosestProgram = context->createProgramFromPTXFile( "Glass.cu.ptx", "closestHitRadiance");
optix::Program radianceAnyHitProgram = context->createProgramFromPTXFile( "Glass.cu.ptx", "anyHitRadiance");
optix::Program photonClosestProgram = context->createProgramFromPTXFile( "Glass.cu.ptx", "closestHitPhoton");
optix::Program photonAnyHitProgram = context->createProgramFromPTXFile( "Glass.cu.ptx", "anyHitPhoton");
//vcmClosestHitLight
m_optixMaterial->setClosestHitProgram(RayType::RADIANCE, radianceClosestProgram);
//m_optixMaterial->setAnyHitProgram(RayType::RADIANCE, radianceAnyHitProgram );
m_optixMaterial->setClosestHitProgram(RayType::RADIANCE_IN_PARTICIPATING_MEDIUM, radianceClosestProgram);
//m_optixMaterial->setAnyHitProgram(RayType::RADIANCE_IN_PARTICIPATING_MEDIUM, radianceAnyHitProgram);
m_optixMaterial->setClosestHitProgram(RayType::PHOTON, photonClosestProgram);
//m_optixMaterial->setAnyHitProgram(RayType::PHOTON, photonAnyHitProgram);
m_optixMaterial->setClosestHitProgram(RayType::PHOTON_IN_PARTICIPATING_MEDIUM, photonClosestProgram);
// m_optixMaterial->setAnyHitProgram(RayType::PHOTON_IN_PARTICIPATING_MEDIUM, photonAnyHitProgram);
m_optixMaterial->setClosestHitProgram(RayType::LIGHT_VCM, context->createProgramFromPTXFile( "Glass.cu.ptx", "vcmClosestHitLight"));
m_optixMaterial->setClosestHitProgram(RayType::CAMERA_VCM, context->createProgramFromPTXFile( "Glass.cu.ptx", "vcmClosestHitCamera"));
this->registerMaterialWithShadowProgram(context, m_optixMaterial);
m_optixMaterialIsCreated = true;
}
return m_optixMaterial;
}
optix::Material Texture::getOptixMaterial(optix::Context & context)
{
if(!m_optixMaterialIsCreated)
{
m_optixMaterial = context->createMaterial();
optix::Program radianceProgram = context->createProgramFromPTXFile( "Texture.cu.ptx", "closestHitRadiance");
optix::Program photonProgram = context->createProgramFromPTXFile( "Texture.cu.ptx", "closestHitPhoton");
m_optixMaterial->setClosestHitProgram(RayType::RADIANCE, radianceProgram);
m_optixMaterial->setClosestHitProgram(RayType::RADIANCE_IN_PARTICIPATING_MEDIUM, radianceProgram);
m_optixMaterial->setClosestHitProgram(RayType::PHOTON, photonProgram);
m_optixMaterial->setClosestHitProgram(RayType::PHOTON_IN_PARTICIPATING_MEDIUM, photonProgram);
m_optixMaterial->setClosestHitProgram(RayType::LIGHT_VCM, context->createProgramFromPTXFile( "Texture.cu.ptx", "vcmClosestHitLight"));
m_optixMaterial->setClosestHitProgram(RayType::CAMERA_VCM, context->createProgramFromPTXFile( "Texture.cu.ptx", "vcmClosestHitCamera"));
m_optixMaterial->validate();
this->registerMaterialWithShadowProgram(context, m_optixMaterial);
m_optixMaterialIsCreated = true;
}
// Diffuse buffer
optix::Buffer buffer = createBufferFromImage(context, *m_diffuseImage);
m_diffuseSampler = createTextureSamplerFromBuffer(context, buffer);
optix::Buffer normalsBuffer;
if(m_normalMapImage != NULL)
{
normalsBuffer = createBufferFromImage(context, *m_normalMapImage);
}
else
{
normalsBuffer = context->createBuffer(RT_BUFFER_INPUT, RT_FORMAT_UNSIGNED_BYTE4, 0, 0);
}
m_normalMapSampler = createTextureSamplerFromBuffer(context, normalsBuffer);
return m_optixMaterial;
}
void PolygonMesh::initialise(optix::Context c) {
string mesh_ptx_path = ptxpath("path_tracer", "PolygonMesh.cu");
bounding_box = c->createProgramFromPTXFile(mesh_ptx_path, "mesh_bounds");
intersection = c->createProgramFromPTXFile(mesh_ptx_path, "mesh_intersect");
initialised = true;
}
void TriangleMesh::optixInit(optix::Context context) {
try {
static optix::Program intersectProgram = context->createProgramFromPTXFile("ptx/triangle_mesh_program.cu.ptx", "intersect");
static optix::Program boundsProgram = context->createProgramFromPTXFile("ptx/triangle_mesh_program.cu.ptx", "bounds");
#if OPTIX_USE_GEOMETRY_VBO
// Bind vertex VBO
Optix.posBuffer = context->createBufferFromGLBO(RT_BUFFER_INPUT, vboPos);
Optix.posBuffer->setFormat(RT_FORMAT_FLOAT3);
Optix.posBuffer->setSize(posData.size());
// Bind normal VBO
Optix.normalBuffer = context->createBufferFromGLBO(RT_BUFFER_INPUT, vboNormal);
Optix.normalBuffer->setFormat(RT_FORMAT_FLOAT3);
Optix.normalBuffer->setSize(normalData.size());
// Bind texture VBO
Optix.texCoordBuffer = context->createBufferFromGLBO(RT_BUFFER_INPUT, vboTexCoord);
Optix.texCoordBuffer->setFormat(RT_FORMAT_FLOAT2);
Optix.texCoordBuffer->setSize(texCoordData.size());
// Bind index IBO
Optix.indexBuffer = context->createBufferFromGLBO(RT_BUFFER_INPUT, ibo);
Optix.indexBuffer->setFormat(RT_FORMAT_UNSIGNED_INT);
Optix.indexBuffer->setSize(indexData.size());
#else
// Copy position buffer
Optix.posBuffer = context->createBuffer(RT_BUFFER_INPUT, RT_FORMAT_FLOAT3, posData.size());
memcpy(Optix.posBuffer->map(), &posData[0], posData.size() * sizeof(Vec3));
Optix.posBuffer->unmap();
// Copy normal buffer
Optix.normalBuffer = context->createBuffer(RT_BUFFER_INPUT, RT_FORMAT_FLOAT3, normalData.size());
memcpy(Optix.normalBuffer->map(), &normalData[0], normalData.size() * sizeof(Vec3));
Optix.normalBuffer->unmap();
// Copy texture buffer
Optix.texCoordBuffer = context->createBuffer(RT_BUFFER_INPUT, RT_FORMAT_FLOAT2, texCoordData.size());
memcpy(Optix.texCoordBuffer->map(), &texCoordData[0], texCoordData.size() * sizeof(Vec2));
Optix.texCoordBuffer->unmap();
// Copy index buffer
Optix.indexBuffer = context->createBuffer(RT_BUFFER_INPUT, RT_FORMAT_UNSIGNED_INT3, indexData.size());
memcpy(Optix.indexBuffer->map(), &indexData[0], indexData.size() * sizeof(TrianglePrimitive));
Optix.indexBuffer->unmap();
#endif
// Make geometry
Optix.geometry = context->createGeometry();
Optix.geometry->setIntersectionProgram(intersectProgram);
Optix.geometry->setBoundingBoxProgram(boundsProgram);
Optix.geometry->setPrimitiveCount(indexData.size());
Optix.geometry["posData"]->setBuffer(Optix.posBuffer);
Optix.geometry["normalData"]->setBuffer(Optix.normalBuffer);
Optix.geometry["texCoordData"]->setBuffer(Optix.texCoordBuffer);
Optix.geometry["indexData"]->setBuffer(Optix.indexBuffer);
// Make instance
if (!material->Optix.material) {
#if OPTIX_USE_OPENGL_TEXTURE
material->Optix.sampler = context->createTextureSamplerFromGLImage(material->image->texture, RT_TARGET_GL_TEXTURE_2D);
#else
optix::Buffer buf = context->createBuffer(RT_BUFFER_INPUT, RT_FORMAT_FLOAT4, material->image->width, material->image->height);
memcpy(buf->map(), material->image->pixels, material->image->width * material->image->height * sizeof(Color));
buf->unmap();
material->Optix.sampler = context->createTextureSampler();
material->Optix.sampler->setArraySize(1);
material->Optix.sampler->setMipLevelCount(1);
material->Optix.sampler->setBuffer(0, 0, buf);
#endif
material->Optix.sampler->setWrapMode(0, RT_WRAP_REPEAT);
material->Optix.sampler->setWrapMode(1, RT_WRAP_REPEAT);
material->Optix.sampler->setIndexingMode(RT_TEXTURE_INDEX_NORMALIZED_COORDINATES);
material->Optix.sampler->setReadMode(RT_TEXTURE_READ_NORMALIZED_FLOAT);
material->Optix.sampler->setMaxAnisotropy(1.f);
RTfiltermode filter = (material->image->filter == GL_NEAREST) ? RT_FILTER_NEAREST : RT_FILTER_LINEAR;
material->Optix.sampler->setFilteringModes(filter, filter, RT_FILTER_NONE);
material->Optix.material = context->createMaterial();
material->Optix.material->setClosestHitProgram(0, materialClosestHitProgram);
material->Optix.material->setAnyHitProgram(1, materialAnyHitProgram);
material->Optix.material["sampler"]->setTextureSampler(material->Optix.sampler);
material->Optix.material["ambient"]->setFloat(material->ambient.r(), material->ambient.g(), material->ambient.b(), material->ambient.a());
material->Optix.material["specular"]->setFloat(material->specular.r(), material->specular.g(), material->specular.b(), material->specular.a());
material->Optix.material["diffuse"]->setFloat(material->diffuse.r(), material->diffuse.g(), material->diffuse.b(), material->diffuse.a());
material->Optix.material["shineExponent"]->setFloat(material->shineExponent);
material->Optix.material["reflectIntensity"]->setFloat(material->reflectIntensity);
material->Optix.material["refractIndex"]->setFloat(material->refractIndex);
}
Optix.geometryInstance = context->createGeometryInstance();
Optix.geometryInstance->setGeometry(Optix.geometry);
Optix.geometryInstance->addMaterial(material->Optix.material);
} catch (optix::Exception e) {
printException(e);
}
}
optix::Group CornellSmall::getSceneRootGroup(optix::Context & context)
{
m_pgram_bounding_box = context->createProgramFromPTXFile( "parallelogram.cu.ptx", "bounds" );
m_pgram_intersection = context->createProgramFromPTXFile( "parallelogram.cu.ptx", "intersect" );
// create geometry instances
QVector<optix::GeometryInstance> gis;
Diffuse diffuseWhite = Diffuse(optix::make_float3( 0.8f ));
Diffuse diffuseGreen = Diffuse(optix::make_float3( 0.05f, 0.8f, 0.05f ));
Diffuse diffuseRed = Diffuse(optix::make_float3( 1.f, 0.05f, 0.05f ));
// colors as in SmallVCM
if ((m_config & CornellSmall::SmallVCMColors) != 0)
{
diffuseWhite = Diffuse(optix::make_float3( 0.803922f, 0.803922f, 0.803922f ));
diffuseGreen = Diffuse(optix::make_float3( 0.156863f, 0.803922f, 0.172549f ));
diffuseRed = Diffuse(optix::make_float3( 0.803922f, 0.152941f, 0.152941f ));
}
Diffuse diffuseBlue = Diffuse(optix::make_float3( 0.156863f, 0.172549f, 0.803922f ));
Mirror mirror = Mirror(optix::make_float3(1.f,1.f,1.f));
Glossy glossyWhite = Glossy(optix::make_float3(.1f,.1f,.1f), optix::make_float3(.7f,.7f,.7f), 90.f);
Glass glass = Glass(1.6, optix::make_float3(1.f,1.f,1.f), optix::make_float3(1.f,1.f,1.f) );
DiffuseEmitter emitter = DiffuseEmitter(m_sceneLights[0].power, Vector3(1));
// Set up materials
// Floor
Material *matFloor = &diffuseWhite;
if ((m_config & Config::FloorMirror) != 0)
{
matFloor = &mirror;
}
else if ((m_config & Config::FloorGlossy) != 0)
{
matFloor = &glossyWhite;
}
// Ceiling
Material *matCeiling = &diffuseWhite;
// Back wall
Material *matBackWall = &diffuseWhite;
if ((m_config & Config::BackwallBlue) != 0)
{
matBackWall = &diffuseBlue;
}
// Right wall
Material *matRightWall = &diffuseGreen;
if ((m_config & CornellSmall::SmallVCMColors) != 0)
matRightWall = &diffuseRed;
// Left wall
Material *matLeftWall = &diffuseRed;
if ((m_config & CornellSmall::SmallVCMColors) != 0)
matLeftWall = &diffuseGreen;
// Short block
Material *matShortBlock = &diffuseWhite;
// Tall block
Material *matTallBlock = &diffuseWhite;
// Set geometry - Cornell box size in SmallVCM 2.56004, here rounded up slightly
// Floor
gis.push_back( createParallelogram(0, context, optix::make_float3( 0.0f, 0.0f, 0.0f ),
optix::make_float3( 0.0f, 0.0f, 2.5f ),
optix::make_float3( 2.5f, 0.0f, 0.0f ),
*matFloor ) );
// Ceiling
if ((m_config & Config::LightPointDistant) == 0)
{
gis.push_back( createParallelogram(1, context, optix::make_float3( 0.0f, 2.5f, 0.0f ),
optix::make_float3( 2.5f, 0.0f, 0.0f ),
optix::make_float3( 0.0f, 0.0f, 2.5f ),
*matCeiling ) );
}
// Back wall
gis.push_back( createParallelogram(2, context,optix::make_float3( 0.0f, 0.0f, 2.5f),
optix::make_float3( 0.0f, 2.5f, 0.0f),
optix::make_float3( 2.5f, 0.0f, 0.0f),
*matBackWall));
// Right wall
gis.push_back( createParallelogram(3, context, optix::make_float3( 0.0f, 0.0f, 0.0f ),
optix::make_float3( 0.0f, 2.5f, 0.0f ),
optix::make_float3( 0.0f, 0.0f, 2.5f ),
*matRightWall ) );
// Left wall
gis.push_back( createParallelogram(4, context, optix::make_float3( 2.5f, 0.0f, 0.0f ),
optix::make_float3( 0.0f, 0.0f, 2.5f ),
optix::make_float3( 0.0f, 2.5f, 0.0f ),
*matLeftWall ) );
if ((m_config & Config::Blocks) != 0)
{
// Short block
gis.push_back( createParallelogram(5, context,
optix::make_float3( 130.0f, 165.0f, 65.0f) / 220.f,
optix::make_float3( -48.0f, 0.0f, 160.0f) / 220.f,
optix::make_float3( 160.0f, 0.0f, 49.0f) / 220.f,
*matShortBlock ) );
gis.push_back( createParallelogram(6, context,
optix::make_float3( 290.0f, 0.0f, 114.0f) / 220.f,
optix::make_float3( 0.0f, 165.0f, 0.0f) / 220.f,
optix::make_float3( -50.0f, 0.0f, 158.0f) / 220.f,
*matShortBlock ) );
gis.push_back( createParallelogram(7, context,
optix::make_float3( 130.0f, 0.0f, 65.0f) / 220.f,
optix::make_float3( 0.0f, 165.0f, 0.0f) / 220.f,
optix::make_float3( 160.0f, 0.0f, 49.0f) / 220.f,
*matShortBlock ) );
gis.push_back( createParallelogram(8, context,
optix::make_float3( 82.0f, 0.0f, 225.0f) / 220.f,
optix::make_float3( 0.0f, 165.0f, 0.0f) / 220.f,
optix::make_float3( 48.0f, 0.0f, -160.0f) / 220.f,
*matShortBlock ) );
gis.push_back( createParallelogram(9, context,
optix::make_float3( 240.0f, 0.0f, 272.0f) / 220.f,
optix::make_float3( 0.0f, 165.0f, 0.0f) / 220.f,
optix::make_float3( -158.0f, 0.0f, -47.0f) / 220.f,
*matShortBlock));
// Tall block
gis.push_back( createParallelogram(10, context,
optix::make_float3( 423.0f, 340.0f, 247.0f) / 220.f,
optix::make_float3( -158.0f, 0.0f, 49.0f) / 220.f,
optix::make_float3( 49.0f, 0.0f, 159.0f) / 220.f,
*matTallBlock ) );
gis.push_back( createParallelogram(11, context,
optix::make_float3( 423.0f, 0.0f, 247.0f) / 220.f,
optix::make_float3( 0.0f, 340.0f, 0.0f) / 220.f,
optix::make_float3( 49.0f, 0.0f, 159.0f) / 220.f,
*matTallBlock ) );
gis.push_back( createParallelogram(12, context,
optix::make_float3( 472.0f, 0.0f, 406.0f) / 220.f,
optix::make_float3( 0.0f, 340.0f, 0.0f) / 220.f,
optix::make_float3( -158.0f, 0.0f, 50.0f) / 220.f,
*matTallBlock ) );
gis.push_back( createParallelogram(13, context,
optix::make_float3( 314.0f, 0.0f, 456.0f) / 220.f,
optix::make_float3( 0.0f, 340.0f, 0.0f) / 220.f,
optix::make_float3( -49.0f, 0.0f, -160.0f) / 220.f,
*matTallBlock ) );
gis.push_back( createParallelogram(14, context,
optix::make_float3( 265.0f, 0.0f, 296.0f) / 220.f,
optix::make_float3( 0.0f, 340.1f, 0.0f) / 220.f,
optix::make_float3( 158.0f, 0.0f, -49.0f) / 220.f,
*matTallBlock ) );
}
// Area light
if ( ((m_config & Config::LightArea) != 0) ||
((m_config & Config::LightAreaUpwards) != 0) )
{
emitter.setInverseArea(m_sceneLights[0].inverseArea);
for(int i = 0; i < m_sceneLights.size(); i++)
{
gis.push_back(createParallelogram(15 + i, context, m_sceneLights[i].position,
m_sceneLights[i].v1, m_sceneLights[i].v2, emitter));
}
}
// Large sphere
if ((m_config & Config::LargeMirrorSphere) != 0 || (m_config & Config::LargeGlassSphere) != 0)
{
Material *matLargeSphere = &mirror;
if ((m_config & Config::LargeGlassSphere) != 0)
matLargeSphere = &glass;
float radius = 0.8;
SphereInstance sphere = SphereInstance(*matLargeSphere, Sphere(Vector3(1.25f, radius, 1.25f), radius));
gis.push_back(sphere.getOptixGeometryInstance(context));
}
// Small glass sphere right
if ((m_config & Config::SmallGlassSphere))
{
float radius = 0.5;
SphereInstance sphere = SphereInstance(glass, Sphere(Vector3(1.25f - 0.535714269f, radius, 1.25f), radius));
gis.push_back(sphere.getOptixGeometryInstance(context));
}
// Small mirror sphere left
if ((m_config & Config::SmallMirrorSphere))
{
float radius = 0.5;
SphereInstance sphere = SphereInstance(mirror, Sphere(Vector3(1.25f + 0.535714269f, radius, 1.25f), radius));
gis.push_back(sphere.getOptixGeometryInstance(context));
}
// Create geometry group
optix::GeometryGroup geometry_group = context->createGeometryGroup();
geometry_group->setChildCount( static_cast<unsigned int>( gis.size() ) );
for (int i = 0; i < gis.size(); ++i )
geometry_group->setChild( i, gis[i] );
geometry_group->setAcceleration(context->createAcceleration("NoAccel", "NoAccel")); // Bvh Sbvh Trbvh NoAccel // Bvh BvhCompact NoAccel
optix::Group gro = context->createGroup();
gro->setChildCount(1);
gro->setChild(0, geometry_group);
optix::Acceleration acceleration = context->createAcceleration("NoAccel", "NoAccel");
gro->setAcceleration(acceleration);
return gro;
}