//-----------------------------------------------------------------------------
//
// Scene update
//
//-----------------------------------------------------------------------------
void SampleScene::updateSphere( float radius)//, float center )
{
Group top_level_group = m_context["top_object"]-> getGroup();
Transform transform = top_level_group->getChild<Transform>( 0 );
GeometryGroup geometrygroup = transform->getChild<GeometryGroup>();
GeometryInstance instance = geometrygroup->getChild( 0 );
Geometry geometry = instance->getGeometry();
// Sphere
//geometry["sphere"]->setFloat( center, 0, 0, radius );
// Sphere Shell
geometry["radius2"]->setFloat( radius ); // Set Radius
//geometry["center"]->setFloat( center, 0, 0 ); // set center
// Mark Dirty
int childCount = top_level_group->getChildCount();
for ( int i = 0; i < childCount; i++) {
if( top_level_group->getChildType( i ) == RT_OBJECTTYPE_TRANSFORM ){
transform = top_level_group->getChild<Transform>( i );
geometrygroup = transform->getChild<GeometryGroup>();
}else{
geometrygroup = top_level_group->getChild<GeometryGroup>( i );
//geometrygroup = transform->getChild<GeometryGroup>();
}
geometrygroup->getAcceleration()->markDirty();
}
top_level_group->getAcceleration()->markDirty();
}
void SampleScene::updateMaterial( float refraction_index )
{
Group top_level_group = m_context["top_object"]-> getGroup();
Transform transform = top_level_group->getChild<Transform>( 0 );
GeometryGroup geometrygroup = transform->getChild<GeometryGroup>();
GeometryInstance instance = geometrygroup->getChild( 0 );
Material material = instance->getMaterial( 0 );
material["refraction_index"]->setFloat( refraction_index );
}
void GeometryInstance::enabling ()
{
geom->used++;
if (geom->getType() == Geometry::GROUP) {
GeometryGroup* group = (GeometryGroup*) geom;
for (size_t i=0; i<group->size(); i++)
count((*group)[i],+1);
}
else {
count(geom,+1);
}
}
void WhittedScene::createGeometry()
{
// Create glass sphere geometry
std::string shell_ptx( ptxpath( "whitted", "sphere_shell.cu" ) );
Geometry glass_sphere = m_context->createGeometry();
glass_sphere->setPrimitiveCount( 1u );
glass_sphere->setBoundingBoxProgram( m_context->createProgramFromPTXFile( shell_ptx, "bounds" ) );
glass_sphere->setIntersectionProgram( m_context->createProgramFromPTXFile( shell_ptx, "intersect" ) );
glass_sphere["center"]->setFloat( 4.0f, 2.3f, -4.0f );
glass_sphere["radius1"]->setFloat( 0.96f );
glass_sphere["radius2"]->setFloat( 1.0f );
// Metal sphere geometry
std::string sphere_ptx( ptxpath( "whitted", "sphere.cu" ) );
Geometry metal_sphere = m_context->createGeometry();
metal_sphere->setPrimitiveCount( 1u );
metal_sphere->setBoundingBoxProgram( m_context->createProgramFromPTXFile( sphere_ptx, "bounds" ) );
metal_sphere->setIntersectionProgram( m_context->createProgramFromPTXFile( sphere_ptx, "robust_intersect" ) );
metal_sphere["sphere"]->setFloat( 2.0f, 1.5f, -2.5f, 1.0f );
// Floor geometry
std::string pgram_ptx( ptxpath( "whitted", "parallelogram.cu" ) );
Geometry parallelogram = m_context->createGeometry();
parallelogram->setPrimitiveCount( 1u );
parallelogram->setBoundingBoxProgram( m_context->createProgramFromPTXFile( pgram_ptx, "bounds" ) );
parallelogram->setIntersectionProgram( m_context->createProgramFromPTXFile( pgram_ptx, "intersect" ) );
float3 anchor = make_float3( -16.0f, 0.01f, -8.0f );
float3 v1 = make_float3( 32.0f, 0.0f, 0.0f );
float3 v2 = make_float3( 0.0f, 0.0f, 16.0f );
float3 normal = cross( v1, v2 );
normal = normalize( normal );
float d = dot( normal, anchor );
v1 *= 1.0f/dot( v1, v1 );
v2 *= 1.0f/dot( v2, v2 );
float4 plane = make_float4( normal, d );
parallelogram["plane"]->setFloat( plane );
parallelogram["v1"]->setFloat( v1 );
parallelogram["v2"]->setFloat( v2 );
parallelogram["anchor"]->setFloat( anchor );
// Glass material
Program glass_ch = m_context->createProgramFromPTXFile( ptxpath( "whitted", "glass.cu" ), "closest_hit_radiance" );
Program glass_ah = m_context->createProgramFromPTXFile( ptxpath( "whitted", "glass.cu" ), "any_hit_shadow" );
Material glass_matl = m_context->createMaterial();
glass_matl->setClosestHitProgram( 0, glass_ch );
glass_matl->setAnyHitProgram( 1, glass_ah );
glass_matl["importance_cutoff"]->setFloat( 1e-2f );
glass_matl["cutoff_color"]->setFloat( 0.034f, 0.055f, 0.085f );
glass_matl["fresnel_exponent"]->setFloat( 3.0f );
glass_matl["fresnel_minimum"]->setFloat( 0.1f );
glass_matl["fresnel_maximum"]->setFloat( 1.0f );
glass_matl["refraction_index"]->setFloat( 1.4f );
glass_matl["refraction_color"]->setFloat( 1.0f, 1.0f, 1.0f );
glass_matl["reflection_color"]->setFloat( 1.0f, 1.0f, 1.0f );
glass_matl["refraction_maxdepth"]->setInt( 10 );
glass_matl["reflection_maxdepth"]->setInt( 5 );
float3 extinction = make_float3(.83f, .83f, .83f);
glass_matl["extinction_constant"]->setFloat( log(extinction.x), log(extinction.y), log(extinction.z) );
glass_matl["shadow_attenuation"]->setFloat( 0.6f, 0.6f, 0.6f );
// Metal material
Program phong_ch = m_context->createProgramFromPTXFile( ptxpath( "whitted", "phong.cu" ), "closest_hit_radiance" );
Program phong_ah = m_context->createProgramFromPTXFile( ptxpath( "whitted", "phong.cu" ), "any_hit_shadow" );
Material metal_matl = m_context->createMaterial();
metal_matl->setClosestHitProgram( 0, phong_ch );
metal_matl->setAnyHitProgram( 1, phong_ah );
metal_matl["Ka"]->setFloat( 0.2f, 0.5f, 0.5f );
metal_matl["Kd"]->setFloat( 0.2f, 0.7f, 0.8f );
metal_matl["Ks"]->setFloat( 0.9f, 0.9f, 0.9f );
metal_matl["phong_exp"]->setFloat( 64 );
metal_matl["reflectivity"]->setFloat( 0.5f, 0.5f, 0.5f);
// Checker material for floor
Program check_ch = m_context->createProgramFromPTXFile( ptxpath( "whitted", "checker.cu" ), "closest_hit_radiance" );
Program check_ah = m_context->createProgramFromPTXFile( ptxpath( "whitted", "checker.cu" ), "any_hit_shadow" );
Material floor_matl = m_context->createMaterial();
floor_matl->setClosestHitProgram( 0, check_ch );
floor_matl->setAnyHitProgram( 1, check_ah );
floor_matl["Kd1"]->setFloat( 0.8f, 0.3f, 0.15f);
floor_matl["Ka1"]->setFloat( 0.8f, 0.3f, 0.15f);
floor_matl["Ks1"]->setFloat( 0.0f, 0.0f, 0.0f);
floor_matl["Kd2"]->setFloat( 0.9f, 0.85f, 0.05f);
floor_matl["Ka2"]->setFloat( 0.9f, 0.85f, 0.05f);
floor_matl["Ks2"]->setFloat( 0.0f, 0.0f, 0.0f);
floor_matl["inv_checker_size"]->setFloat( 32.0f, 16.0f, 1.0f );
floor_matl["phong_exp1"]->setFloat( 0.0f );
floor_matl["phong_exp2"]->setFloat( 0.0f );
floor_matl["reflectivity1"]->setFloat( 0.0f, 0.0f, 0.0f);
floor_matl["reflectivity2"]->setFloat( 0.0f, 0.0f, 0.0f);
// Create GIs for each piece of geometry
std::vector<GeometryInstance> gis;
gis.push_back( m_context->createGeometryInstance( glass_sphere, &glass_matl, &glass_matl+1 ) );
gis.push_back( m_context->createGeometryInstance( metal_sphere, &metal_matl, &metal_matl+1 ) );
gis.push_back( m_context->createGeometryInstance( parallelogram, &floor_matl, &floor_matl+1 ) );
// Place all in group
GeometryGroup geometrygroup = m_context->createGeometryGroup();
geometrygroup->setChildCount( static_cast<unsigned int>(gis.size()) );
geometrygroup->setChild( 0, gis[0] );
geometrygroup->setChild( 1, gis[1] );
geometrygroup->setChild( 2, gis[2] );
geometrygroup->setAcceleration( m_context->createAcceleration("NoAccel","NoAccel") );
m_context["top_object"]->set( geometrygroup );
m_context["top_shadower"]->set( geometrygroup );
}
void assigment4_1_and_2()
{
Image img(800, 600);
img.addRef();
//Set up the scene
GeometryGroup scene;
LWObject cow;
cow.read("models/cow.obj", true);
cow.addReferencesToScene(scene.primitives);
scene.rebuildIndex();
BumpMirrorPhongShader sh4;
sh4.diffuseCoef = float4(0.2f, 0.2f, 0, 0);
sh4.ambientCoef = sh4.diffuseCoef;
sh4.specularCoef = float4::rep(0.8f);
sh4.specularExponent = 10000.f;
sh4.reflCoef = 0.4f;
sh4.addRef();
cow.materials[cow.materialMap["Floor"]].shader = &sh4;
//Enable bi-linear filtering on the walls
((TexturedPhongShader*)cow.materials[cow.materialMap["Stones"]].shader.data())->diffTexture->filterMode = Texture::TFM_Bilinear;
((TexturedPhongShader*)cow.materials[cow.materialMap["Stones"]].shader.data())->amibientTexture->filterMode = Texture::TFM_Bilinear;
//Set up the cameras
PerspectiveCamera cam1(Point(-9.398149f, -6.266083f, 5.348377f), Point(-6.324413f, -2.961229f, 4.203216f), Vector(0, 0, 1), 30,
std::make_pair(img.width(), img.height()));
PerspectiveCamera cam2(Point(2.699700f, 6.437226f, 0.878297f), Point(4.337114f, 8.457443f,- 0.019007f), Vector(0, 0, 1), 30,
std::make_pair(img.width(), img.height()));
cam1.addRef();
cam2.addRef();
//Set up the integrator
IntegratorImpl integrator;
integrator.addRef();
integrator.scene = &scene;
PointLightSource pls;
pls.falloff = float4(0, 0, 1, 0);
pls.intensity = float4::rep(0.9f);
pls.position = Point(-2.473637f, 3.119330f, 9.571486f);
integrator.lightSources.push_back(pls);
integrator.ambientLight = float4::rep(0.1f);
DefaultSampler samp;
samp.addRef();
//Render
Renderer r;
r.integrator = &integrator;
r.target = &img;
r.sampler = &samp;
r.camera = &cam1;
r.render();
img.writePNG("result_cam1.png");
//For seeing the difference in texture filtering
r.camera = &cam2;
r.render();
img.writePNG("result_cam2.png");
}
void setup_and_render()
{
Image img(WIDTH, HEIGHT);
img.addRef();
//Set up the scene
GeometryGroup scene;
// load scene
LWObject objects;
objects.read("models/cube.obj", true);
objects.addReferencesToScene(scene.primitives);
scene.rebuildIndex();
//apply custom shaders
BumpTexturePhongShader as;
as.addRef();
Image grass;
grass.addRef();
grass.readPNG("models/mat.png");
Texture textureGrass;
textureGrass.addRef();
textureGrass.image = &grass;
as.diffTexture = &textureGrass;
as.amibientTexture = &textureGrass;
as.specularCoef = float4::rep(0);
as.specularExponent = 10000.f;
as.transparency = float4::rep(0.9);
FractalLandscape f(Point(-4419,-8000,-569), Point(3581,0, -569),9, 0.1, &as, 5.0f);
f.addReferencesToScene(scene.primitives);
scene.rebuildIndex();
// my phong
RRPhongShader glass;
glass.n1 = 1.0f;
glass.n2 = 1.5f;
glass.diffuseCoef = float4(0.1, 0.1, 0.1, 0);
glass.ambientCoef = glass.diffuseCoef;
glass.specularCoef = float4::rep(0.9);
glass.specularExponent = 10000;
glass.transparency = float4::rep(0.9);
glass.addRef();
Sphere sphere(Point(-78,1318,40), 25, &glass);;
scene.primitives.push_back(&sphere);
scene.rebuildIndex();
objects.materials[objects.materialMap["Glass"]].shader = &glass;
//sample shader for noise
ProceduralPhongShader skyShader;
skyShader.addRef();
CloudTexture nt;
nt.addRef();
skyShader.amibientNoiseTexture = &nt;
skyShader.diffuseCoef = float4::rep(0.0f);
skyShader.specularCoef = float4::rep(0.0f);
// float w = skyShader.amibientNoiseTexture->perlin->width;
objects.materials[objects.materialMap["Sky"]].shader = &skyShader;
//Set up the cameras
PerspectiveCamera cam1(Point(-23, 1483, 30 ), forwardForCamera((0.0)*PI/180.0), Vector(0, 0, 1), 45,
std::make_pair(img.width(), img.height()));
cam1.addRef();
//Set up the integrator
IntegratorImpl integrator;
integrator.addRef();
integrator.scene = &scene;
PointLightSource pls3;
pls3.falloff = float4(0, 0, 1, 0);
pls3.intensity = float4::rep(0.9f);
pls3.position = Point(299.5, 99, 518);
integrator.lightSources.push_back(pls3);
// PointLightSource pls4;
//
// pls4.falloff = float4(0, 0, 1, 0);
//
// pls4.intensity = float4::rep(0.9f);
// pls4.position = Point(1289.5, 99, 518);
// integrator.lightSources.push_back(pls4);
areaLightSource(integrator, 0.9, 2, Point(-1180, -3860, -1718), 1000);
integrator.ambientLight = float4::rep(0.1f);
StratifiedSampler samp;
samp.addRef();
samp.samplesX = 3;
samp.samplesY = 3;
//Render
Renderer r;
r.integrator = &integrator;
r.target = &img;
r.sampler = &samp;
r.camera = &cam1;
r.render();
img.writePNG("result.png");
}