Reflector::Reflector(Object3D* parent, SceneGraph::DrawableGroup3D* group): Object3D(parent), SceneGraph::Drawable3D(*this, group) {
CubeMapResourceManager& resourceManager = CubeMapResourceManager::instance();
/* Sphere mesh */
if(!(_sphere = resourceManager.get<GL::Mesh>("sphere"))) {
Trade::MeshData3D sphereData = Primitives::uvSphereSolid(16, 32, Primitives::UVSphereTextureCoords::Generate);
GL::Buffer* buffer = new GL::Buffer;
buffer->setData(MeshTools::interleave(sphereData.positions(0), sphereData.textureCoords2D(0)), GL::BufferUsage::StaticDraw);
Containers::Array<char> indexData;
MeshIndexType indexType;
UnsignedInt indexStart, indexEnd;
std::tie(indexData, indexType, indexStart, indexEnd) = MeshTools::compressIndices(sphereData.indices());
GL::Buffer* indexBuffer = new GL::Buffer;
indexBuffer->setData(indexData, GL::BufferUsage::StaticDraw);
GL::Mesh* mesh = new GL::Mesh;
mesh->setPrimitive(sphereData.primitive())
.setCount(sphereData.indices().size())
.addVertexBuffer(*buffer, 0, ReflectorShader::Position{}, ReflectorShader::TextureCoords{})
.setIndexBuffer(*indexBuffer, 0, indexType, indexStart, indexEnd);
resourceManager.set("sphere-buffer", buffer, ResourceDataState::Final, ResourcePolicy::Resident)
.set("sphere-index-buffer", indexBuffer, ResourceDataState::Final, ResourcePolicy::Resident)
.set(_sphere.key(), mesh, ResourceDataState::Final, ResourcePolicy::Resident);
}
/* Tarnish texture */
if(!(_tarnishTexture = resourceManager.get<GL::Texture2D>("tarnish-texture"))) {
Resource<Trade::AbstractImporter> importer = resourceManager.get<Trade::AbstractImporter>("jpeg-importer");
Utility::Resource rs("data");
importer->openData(rs.getRaw("tarnish.jpg"));
Containers::Optional<Trade::ImageData2D> image = importer->image2D(0);
CORRADE_INTERNAL_ASSERT(image);
auto texture = new GL::Texture2D;
texture->setWrapping(GL::SamplerWrapping::ClampToEdge)
.setMagnificationFilter(GL::SamplerFilter::Linear)
.setMinificationFilter(GL::SamplerFilter::Linear, GL::SamplerMipmap::Linear)
.setStorage(Math::log2(image->size().min())+1, GL::TextureFormat::RGB8, image->size())
.setSubImage(0, {}, *image)
.generateMipmap();
resourceManager.set<GL::Texture2D>(_tarnishTexture.key(), texture, ResourceDataState::Final, ResourcePolicy::Resident);
}
/* Reflector shader */
if(!(_shader = resourceManager.get<GL::AbstractShaderProgram, ReflectorShader>("reflector-shader")))
resourceManager.set<GL::AbstractShaderProgram>(_shader.key(), new ReflectorShader, ResourceDataState::Final, ResourcePolicy::Resident);
/* Texture (created in CubeMap class) */
_texture = resourceManager.get<GL::CubeMapTexture>("texture");
}
AreaLightsExample::AreaLightsExample(const Arguments& arguments): Platform::Application{arguments, NoCreate} {
/* Try to create multisampled context, but be nice and fall back if not
available. Enable only 2x MSAA if we have enough DPI. */
{
const Vector2 dpiScaling = this->dpiScaling({});
Configuration conf;
conf.setTitle("Magnum Area Lights Example")
.setSize(conf.size(), dpiScaling);
GLConfiguration glConf;
glConf.setSampleCount(dpiScaling.max() < 2.0f ? 8 : 2);
if(!tryCreate(conf, glConf))
create(conf, glConf.setSampleCount(0));
}
/* Make it all DARK, eanble face culling so one-sided lights are properly
visualized */
GL::Renderer::enable(GL::Renderer::Feature::FaceCulling);
GL::Renderer::setClearColor(0x000000_rgbf);
/* Setup the plane mesh, which will be used for both the floor and light
visualization */
_vertices = GL::Buffer{};
_vertices.setData(LightVertices, GL::BufferUsage::StaticDraw);
_plane = GL::Mesh{};
_plane.setPrimitive(GL::MeshPrimitive::TriangleFan)
.addVertexBuffer(_vertices, 0, Shaders::Generic3D::Position{}, Shaders::Generic3D::Normal{})
.setCount(Containers::arraySize(LightVertices));
/* Setup project and floor plane tranformation matrix */
_projection = Matrix4::perspectiveProjection(60.0_degf, 4.0f/3.0f, 0.1f, 50.0f);
_transformation = Matrix4::rotationX(-90.0_degf)*Matrix4::scaling(Vector3{25.0f});
/* Load LTC matrix and BRDF textures */
PluginManager::Manager<Trade::AbstractImporter> manager;
Containers::Pointer<Trade::AbstractImporter> importer = manager.loadAndInstantiate("DdsImporter");
if(!importer) std::exit(1);
const Utility::Resource rs{"arealights-data"};
if(!importer->openData(rs.getRaw("ltc_amp.dds")))
std::exit(2);
/* Set texture data and parameters */
Containers::Optional<Trade::ImageData2D> image = importer->image2D(0);
CORRADE_INTERNAL_ASSERT(image);
_ltcAmp = GL::Texture2D{};
_ltcAmp.setWrapping(GL::SamplerWrapping::ClampToEdge)
.setMagnificationFilter(GL::SamplerFilter::Linear)
.setMinificationFilter(GL::SamplerFilter::Linear)
.setStorage(1, GL::TextureFormat::RG32F, image->size())
.setSubImage(0, {}, *image);
if(!importer->openData(rs.getRaw("ltc_mat.dds")))
std::exit(2);
/* Set texture data and parameters */
image = importer->image2D(0);
CORRADE_INTERNAL_ASSERT(image);
_ltcMat = GL::Texture2D{};
_ltcMat.setWrapping(GL::SamplerWrapping::ClampToEdge)
.setMagnificationFilter(GL::SamplerFilter::Linear)
.setMinificationFilter(GL::SamplerFilter::Linear)
.setStorage(1, GL::TextureFormat::RGBA32F, image->size())
.setSubImage(0, {}, *image);
/* Compile shaders */
_areaLightShader = AreaLightShader{};
_flatShader = Shaders::Flat3D{};
/* Create the UI */
_ui.emplace(Vector2{windowSize()}/dpiScaling(), windowSize(), framebufferSize(), Ui::mcssDarkStyleConfiguration(), "ƒ₀");
Interconnect::connect(*_ui, &Ui::UserInterface::inputWidgetFocused, *this, &AreaLightsExample::startTextInput);
Interconnect::connect(*_ui, &Ui::UserInterface::inputWidgetBlurred, *this, &AreaLightsExample::stopTextInput);
/* Base UI plane */
_baseUiPlane.emplace(*_ui);
Interconnect::connect(_baseUiPlane->metalness, &Ui::Input::valueChanged, *this, &AreaLightsExample::enableApplyButton);
Interconnect::connect(_baseUiPlane->roughness, &Ui::Input::valueChanged, *this, &AreaLightsExample::enableApplyButton);
Interconnect::connect(_baseUiPlane->f0, &Ui::Input::valueChanged, *this, &AreaLightsExample::enableApplyButton);
Interconnect::connect(_baseUiPlane->apply, &Ui::Button::tapped, *this, &AreaLightsExample::apply);
Interconnect::connect(_baseUiPlane->reset, &Ui::Button::tapped, *this, &AreaLightsExample::reset);
/* Apply the default values */
apply();
}
CubeMap::CubeMap(const std::string& prefix, Object3D* parent, SceneGraph::DrawableGroup3D* group): Object3D(parent), SceneGraph::Drawable3D(*this, group) {
CubeMapResourceManager& resourceManager = CubeMapResourceManager::instance();
/* Cube mesh */
if(!(_cube = resourceManager.get<GL::Mesh>("cube"))) {
Trade::MeshData3D cubeData = Primitives::cubeSolid();
MeshTools::flipFaceWinding(cubeData.indices());
GL::Buffer* buffer = new GL::Buffer;
buffer->setData(MeshTools::interleave(cubeData.positions(0)), GL::BufferUsage::StaticDraw);
Containers::Array<char> indexData;
MeshIndexType indexType;
UnsignedInt indexStart, indexEnd;
std::tie(indexData, indexType, indexStart, indexEnd) = MeshTools::compressIndices(cubeData.indices());
GL::Buffer* indexBuffer = new GL::Buffer;
indexBuffer->setData(indexData, GL::BufferUsage::StaticDraw);
GL::Mesh* mesh = new GL::Mesh;
mesh->setPrimitive(cubeData.primitive())
.setCount(cubeData.indices().size())
.addVertexBuffer(*buffer, 0, CubeMapShader::Position{})
.setIndexBuffer(*indexBuffer, 0, indexType, indexStart, indexEnd);
resourceManager.set("cube-buffer", buffer, ResourceDataState::Final, ResourcePolicy::Resident)
.set("cube-index-buffer", indexBuffer, ResourceDataState::Final, ResourcePolicy::Resident)
.set(_cube.key(), mesh, ResourceDataState::Final, ResourcePolicy::Resident);
}
/* Cube map texture */
if(!(_texture = resourceManager.get<GL::CubeMapTexture>("texture"))) {
GL::CubeMapTexture* cubeMap = new GL::CubeMapTexture;
cubeMap->setWrapping(GL::SamplerWrapping::ClampToEdge)
.setMagnificationFilter(GL::SamplerFilter::Linear)
.setMinificationFilter(GL::SamplerFilter::Linear, GL::SamplerMipmap::Linear);
Resource<Trade::AbstractImporter> importer = resourceManager.get<Trade::AbstractImporter>("jpeg-importer");
/* Configure texture storage using size of first image */
importer->openFile(prefix + "+x.jpg");
Containers::Optional<Trade::ImageData2D> image = importer->image2D(0);
CORRADE_INTERNAL_ASSERT(image);
Vector2i size = image->size();
cubeMap->setStorage(Math::log2(size.min())+1, GL::TextureFormat::RGB8, size)
.setSubImage(GL::CubeMapCoordinate::PositiveX, 0, {}, *image);
importer->openFile(prefix + "-x.jpg");
CORRADE_INTERNAL_ASSERT_OUTPUT(image = importer->image2D(0));
cubeMap->setSubImage(GL::CubeMapCoordinate::NegativeX, 0, {}, *image);
importer->openFile(prefix + "+y.jpg");
CORRADE_INTERNAL_ASSERT_OUTPUT(image = importer->image2D(0));
cubeMap->setSubImage(GL::CubeMapCoordinate::PositiveY, 0, {}, *image);
importer->openFile(prefix + "-y.jpg");
CORRADE_INTERNAL_ASSERT_OUTPUT(image = importer->image2D(0));
cubeMap->setSubImage(GL::CubeMapCoordinate::NegativeY, 0, {}, *image);
importer->openFile(prefix + "+z.jpg");
CORRADE_INTERNAL_ASSERT_OUTPUT(image = importer->image2D(0));
cubeMap->setSubImage(GL::CubeMapCoordinate::PositiveZ, 0, {}, *image);
importer->openFile(prefix + "-z.jpg");
CORRADE_INTERNAL_ASSERT_OUTPUT(image = importer->image2D(0));
cubeMap->setSubImage(GL::CubeMapCoordinate::NegativeZ, 0, {}, *image);
cubeMap->generateMipmap();
resourceManager.set(_texture.key(), cubeMap, ResourceDataState::Final, ResourcePolicy::Manual);
}
/* Shader */
if(!(_shader = resourceManager.get<GL::AbstractShaderProgram, CubeMapShader>("shader")))
resourceManager.set<GL::AbstractShaderProgram>(_shader.key(), new CubeMapShader, ResourceDataState::Final, ResourcePolicy::Manual);
}