ShadowCasterShader::ShadowCasterShader() {
MAGNUM_ASSERT_GL_VERSION_SUPPORTED(GL::Version::GL330);
const Utility::Resource rs{"shadow-data"};
GL::Shader vert{GL::Version::GL330, GL::Shader::Type::Vertex};
GL::Shader frag{GL::Version::GL330, GL::Shader::Type::Fragment};
vert.addSource(rs.get("ShadowCaster.vert"));
frag.addSource(rs.get("ShadowCaster.frag"));
CORRADE_INTERNAL_ASSERT_OUTPUT(GL::Shader::compile({vert, frag}));
attachShaders({vert, frag});
CORRADE_INTERNAL_ASSERT_OUTPUT(link());
_transformationMatrixUniform = uniformLocation("transformationMatrix");
}
TexturedTriangleShader::TexturedTriangleShader() {
MAGNUM_ASSERT_VERSION_SUPPORTED(Version::GL330);
const Utility::Resource rs{"textured-triangle-data"};
Shader vert{Version::GL330, Shader::Type::Vertex};
Shader frag{Version::GL330, Shader::Type::Fragment};
vert.addSource(rs.get("TexturedTriangleShader.vert"));
frag.addSource(rs.get("TexturedTriangleShader.frag"));
CORRADE_INTERNAL_ASSERT_OUTPUT(Shader::compile({vert, frag}));
attachShaders({vert, frag});
CORRADE_INTERNAL_ASSERT_OUTPUT(link());
_colorUniform = uniformLocation("color");
setUniform(uniformLocation("textureData"), TextureLayer);
}
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();
}