Magnum::Shaders::MeshVisualizerGL2D class new in Git master

2D mesh visualization OpenGL shader

Visualizes wireframe, per-vertex/per-instance object ID or primitive ID of 2D meshes. You need to provide the Position attribute in your triangle mesh. Use setTransformationProjectionMatrix(), setColor() and others to configure the shader.

Image
Image

The shader expects that you enable wireframe visualization by passing an appropriate Flag to the constructor — there's no default behavior with nothing enabled. The shader is a 2D variant of MeshVisualizerGL3D with mostly identical workflow. See its documentation for more information, workflows that differ are shown below.

Instanced rendering

Enabling Flag::InstancedTransformation will turn the shader into an instanced one. It'll take per-instance transformation from the TransformationMatrix attribute, applying it before the matrix set by setTransformationProjectionMatrix(). The snippet below shows adding a buffer with per-instance transformation to a mesh:

Matrix3 instancedTransformations[] {
    Matrix3::translation({1.0f, 2.0f}),
    Matrix3::translation({2.0f, 1.0f}),
    Matrix3::translation({3.0f, 0.0f}),
    // ...
};

mesh.setInstanceCount(Containers::arraySize(instancedTransformations))
    .addVertexBufferInstanced(GL::Buffer{instancedTransformations}, 1, 0,
        Shaders::MeshVisualizerGL2D::TransformationMatrix{});

If Flag::ObjectIdTexture is used and Flag::InstancedTextureOffset is enabled, the TextureOffset attribute (or TextureOffsetLayer in case Flag::TextureArrays is enabled as well) then can supply per-instance texture offset (or offset and layer).

Uniform buffers

Unlike with uniform buffers in the 3D variant, because the shader doesn't need a separate projection and transformation matrix, a combined one is supplied via a TransformationProjectionUniform2D buffer bound with bindTransformationProjectionBuffer(), and a trimmed-down MeshVisualizerDrawUniform2D is used instead of MeshVisualizerDrawUniform3D. The rest is the same.

Derived classes

class Magnum::Shaders::MeshVisualizerGL2D::CompileState new in Git master
Asynchronous compilation state.

Public types

class CompileState new in Git master
Asynchronous compilation state.
class Configuration new in Git master
Configuration.
enum (anonymous): UnsignedInt { ColorOutput = GenericGL2D::ColorOutput }
enum class Flag: UnsignedInt { Wireframe = 1 << 0, NoGeometryShader = 1 << 1, ObjectId = 1 << 12 new in Git master, InstancedObjectId = (1 << 2)|ObjectId new in 2020.06, ObjectIdTexture = (1 << 14)|ObjectId new in Git master, VertexId = 1 << 3 new in 2020.06, PrimitiveId = 1 << 4 new in 2020.06, PrimitiveIdFromVertexId = (1 << 5)|PrimitiveId new in 2020.06, InstancedTransformation = 1 << 13 new in Git master, TextureTransformation = 1 << 15 new in Git master, InstancedTextureOffset = (1 << 16)|TextureTransformation new in Git master, UniformBuffers = 1 << 10 new in Git master, MultiDraw = UniformBuffers|(1 << 11) new in Git master, TextureArrays = 1 << 17 new in Git master, DynamicPerVertexJointCount = 1 << 18 new in Git master }
Flag.
using Position = GenericGL2D::Position
Vertex position.
using TextureCoordinates = GenericGL2D::TextureCoordinates new in Git master
2D texture coordinates
using JointIds = GenericGL3D::JointIds new in Git master
Joint ids.
using Weights = GenericGL3D::Weights new in Git master
Weights.
using SecondaryJointIds = GenericGL3D::SecondaryJointIds new in Git master
Secondary joint ids.
using SecondaryWeights = GenericGL3D::SecondaryWeights new in Git master
Secondary weights.
using VertexIndex = GL::Attribute<4, Float>
Vertex index.
using ObjectId = GenericGL2D::ObjectId new in 2020.06
(Instanced) object ID
using TransformationMatrix = GenericGL2D::TransformationMatrix new in Git master
(Instanced) transformation matrix
using TextureOffset = GenericGL2D::TextureOffset new in Git master
(Instanced) texture offset for an object ID texture
using TextureOffsetLayer = GenericGL2D::TextureOffsetLayer new in Git master
(Instanced) texture offset and layer for an object ID texture
using Flags = Containers::EnumSet<Flag>
Flags.

Public static functions

static auto compile(const Configuration& configuration) -> CompileState new in Git master
Compile asynchronously.
static auto compile(Flags flags) -> CompileState deprecated in Git master
Compile asynchronously.
static auto compile(Flags flags, UnsignedInt materialCount, UnsignedInt drawCount) -> CompileState deprecated in Git master
Compile for a multi-draw scenario asynchronously.

Constructors, destructors, conversion operators

MeshVisualizerGL2D(const Configuration& configuration) explicit new in Git master
Constructor.
MeshVisualizerGL2D(Flags flags) deprecated in Git master explicit
Constructor.
MeshVisualizerGL2D(Flags flags, UnsignedInt materialCount, UnsignedInt drawCount) deprecated in Git master explicit
Construct for a multi-draw scenario.
MeshVisualizerGL2D(CompileState&& state) explicit new in Git master
Finalize an asynchronous compilation.
MeshVisualizerGL2D(NoCreateT) explicit noexcept
Construct without creating the underlying OpenGL object.
MeshVisualizerGL2D(const MeshVisualizerGL2D&) deleted
Copying is not allowed.
MeshVisualizerGL2D(MeshVisualizerGL2D&&) defaulted noexcept
Move constructor.

Public functions

auto operator=(const MeshVisualizerGL2D&) -> MeshVisualizerGL2D& deleted
Copying is not allowed.
auto operator=(MeshVisualizerGL2D&&) -> MeshVisualizerGL2D& defaulted noexcept
Move assignment.
auto flags() const -> Flags
Flags.
auto jointCount() const -> UnsignedInt new in Git master
Joint count.
auto perVertexJointCount() const -> UnsignedInt new in Git master
Per-vertex joint count.
auto secondaryPerVertexJointCount() const -> UnsignedInt new in Git master
Secondary per-vertex joint count.
auto materialCount() const -> UnsignedInt new in Git master
Material count.
auto drawCount() const -> UnsignedInt new in Git master
Draw count.
auto setPerVertexJointCount(UnsignedInt count, UnsignedInt secondaryCount = 0) -> MeshVisualizerGL2D& new in Git master
Set dynamic per-vertex skinning joint count.

Uniform setters

Used only if Flag::UniformBuffers is not set.

auto setTransformationProjectionMatrix(const Matrix3& matrix) -> MeshVisualizerGL2D&
Set transformation and projection matrix.
auto setTextureMatrix(const Matrix3& matrix) -> MeshVisualizerGL2D& new in Git master
Set texture coordinate transformation matrix for an object ID texture.
auto setTextureLayer(UnsignedInt layer) -> MeshVisualizerGL2D& new in Git master
Set texture array layer for an object ID texture.
auto setViewportSize(const Vector2& size) -> MeshVisualizerGL2D&
Set viewport size.
auto setObjectId(UnsignedInt id) -> MeshVisualizerGL2D& new in Git master
Set object ID.
auto setColor(const Color4& color) -> MeshVisualizerGL2D&
Set base object color.
auto setWireframeColor(const Color4& color) -> MeshVisualizerGL2D&
Set wireframe color.
auto setWireframeWidth(Float width) -> MeshVisualizerGL2D&
Set wireframe width.
auto setColorMapTransformation(Float offset, Float scale) -> MeshVisualizerGL2D& new in 2020.06
Set color map transformation.
auto setSmoothness(Float smoothness) -> MeshVisualizerGL2D&
Set line smoothness.
auto setJointMatrices(const Containers::ArrayView<const Matrix3> matrices) -> MeshVisualizerGL2D& new in Git master
Set joint matrices.
auto setJointMatrices(std::initializer_list<Matrix3> matrices) -> MeshVisualizerGL2D& new in Git master
auto setJointMatrix(UnsignedInt id, const Matrix3& matrix) -> MeshVisualizerGL2D& new in Git master
Set joint matrix for given joint.
auto setPerInstanceJointCount(UnsignedInt count) -> MeshVisualizerGL2D& new in Git master
Set per-instance joint count.

Texture binding

auto bindColorMapTexture(GL::Texture2D& texture) -> MeshVisualizerGL2D& new in 2020.06
Bind a color map texture.
auto bindObjectIdTexture(GL::Texture2D& texture) -> MeshVisualizerGL2D& new in Git master
Bind an object ID texture.
auto bindObjectIdTexture(GL::Texture2DArray& texture) -> MeshVisualizerGL2D& new in Git master
Bind an object ID array texture.

Enum documentation

enum Magnum::Shaders::MeshVisualizerGL2D::(anonymous): UnsignedInt

Enumerators
ColorOutput

Color shader output. Generic output, present always. Expects three- or four-component floating-point or normalized buffer attachment.

enum class Magnum::Shaders::MeshVisualizerGL2D::Flag: UnsignedInt

Flag.

Enumerators
Wireframe

Visualize wireframe. On OpenGL ES 2.0 and WebGL this also enables Flag::NoGeometryShader.

NoGeometryShader

Don't use a geometry shader for wireframe visualization. If enabled, you might need to provide also the VertexIndex attribute in the mesh. On OpenGL ES 2.0 and WebGL enabled alongside Flag::Wireframe.

ObjectId new in Git master

Visualize object ID set via setObjectId() or MeshVisualizerDrawUniform2D::objectId. Since the ID is uniform for the whole draw, this feature is mainly useful in multidraw scenarios or when combined with Flag::InstancedObjectId. Mutually exclusive with Flag::VertexId and Flag::PrimitiveId.

InstancedObjectId new in 2020.06

Visualize instanced object ID. You need to provide the ObjectId attribute in the mesh, which then gets summed with the ID coming from setObjectId() or MeshVisualizerDrawUniform2D::objectId. Implicitly enables Flag::ObjectId. Mutually exclusive with Flag::VertexId and Flag::PrimitiveId.

ObjectIdTexture new in Git master

Object ID texture. Retrieves object IDs from a texture bound with bindObjectIdTexture(), outputting a sum of the object ID texture, the ID coming from setObjectId() or MeshVisualizerDrawUniform2D::objectId and possibly also the per-vertex ID, if Flag::InstancedObjectId is enabled as well. Implicitly enables Flag::ObjectId.

VertexId new in 2020.06

Visualize vertex ID (gl_VertexID). Useful for visualizing mesh connectivity — primitives sharing vertices will have a smooth color map transition while duplicated vertices will cause a sharp edge. Mutually exclusive with Flag::InstancedObjectId and Flag::PrimitiveId.

PrimitiveId new in 2020.06

Visualize primitive ID (gl_PrimitiveID). Useful for visualizing how well is the mesh optimized for a post-transform vertex cache. Mutually exclusive with Flag::InstancedObjectId and Flag::VertexId. See also Flag::PrimitiveIdFromVertexId.

PrimitiveIdFromVertexId new in 2020.06

Visualize primitive ID on a non-indexed triangle mesh using gl_VertexID/3. Implicitly enables Flag::PrimitiveId, mutually exclusive with Flag::InstancedObjectId. Usable on OpenGL < 3.2, OpenGL ES < 3.2 and WebGL where gl_PrimitiveID is not available.

InstancedTransformation new in Git master

Instanced transformation. Retrieves a per-instance transformation matrix from the TransformationMatrix attribute and uses it together with the matrix coming from setTransformationProjectionMatrix() or TransformationProjectionUniform2D::transformationProjectionMatrix (first the per-instance, then the uniform matrix). See Instanced rendering for more information.

TextureTransformation new in Git master

Enable texture coordinate transformation for an object ID texture. If this flag is set, the shader expects that Flag::ObjectIdTexture is enabled as well.

InstancedTextureOffset new in Git master

Instanced texture offset for an object ID texture. Retrieves a per-instance offset vector from the TextureOffset attribute and uses it together with the matrix coming from setTextureMatrix() or TextureTransformationUniform::rotationScaling and TextureTransformationUniform::offset (first the per-instance vector, then the uniform matrix). Instanced texture scaling and rotation is not supported at the moment, you can specify that only via the uniform setTextureMatrix(). Implicitly enables Flag::TextureTransformation. See Instanced rendering for more information.

If Flag::TextureArrays is set as well, a three-component TextureOffsetLayer attribute can be used instead of TextureOffset to specify per-instance texture layer, which gets added to the uniform layer numbers set by setTextureLayer() or TextureTransformationUniform::layer.

UniformBuffers new in Git master

Use uniform buffers. Expects that uniform data are supplied via bindTransformationProjectionBuffer(), bindDrawBuffer() and bindMaterialBuffer() instead of direct uniform setters.

MultiDraw new in Git master

Enable multidraw functionality. Implies Flag::UniformBuffers and combines the value from setDrawOffset() with the gl_DrawID builtin, which makes draws submitted via GL::AbstractShaderProgram::draw(const Containers::Iterable<MeshView>&) pick up per-draw parameters directly, without having to rebind the uniform buffers or specify setDrawOffset() before each draw. In a non-multidraw scenario, gl_DrawID is 0, which means a shader with this flag enabled can be used for regular draws as well.

TextureArrays new in Git master

Use 2D texture arrays for an object ID texture. Expects that the texture is supplied via bindObjectIdTexture(GL::Texture2DArray&) and the layer is set via setTextureLayer() or TextureTransformationUniform::layer. If Flag::InstancedTextureOffset is set as well and a three-component TextureOffsetLayer attribute is used instead of TextureOffset, the per-instance and uniform layer numbers are added together.

DynamicPerVertexJointCount new in Git master

Dynamic per-vertex joint count for skinning. Uses only the first M / N primary / secondary components defined by setPerVertexJointCount() instead of all primary / secondary components defined by Configuration::setJointCount() at shader compilation time. Useful in order to avoid having a shader permutation defined for every possible joint count. Unfortunately it's not possible to make use of default values for unspecified input components as the last component is always 1.0 instead of 0.0, on the other hand dynamically limiting the joint count can reduce the time spent executing the vertex shader compared to going through the full set of per-vertex joints always.

Typedef documentation

typedef GenericGL2D::Position Magnum::Shaders::MeshVisualizerGL2D::Position

Vertex position.

Generic attribute, Vector2.

typedef GenericGL2D::TextureCoordinates Magnum::Shaders::MeshVisualizerGL2D::TextureCoordinates new in Git master

2D texture coordinates

Generic attribute, Vector2. Used only if Flag::ObjectIdTexture is enabled.

typedef GenericGL3D::JointIds Magnum::Shaders::MeshVisualizerGL2D::JointIds new in Git master

Joint ids.

Generic attribute, Magnum::Vector4ui. Used only if perVertexJointCount() isn't 0.

typedef GenericGL3D::Weights Magnum::Shaders::MeshVisualizerGL2D::Weights new in Git master

Weights.

Generic attribute, Magnum::Vector4. Used only if perVertexJointCount() isn't 0.

typedef GenericGL3D::SecondaryJointIds Magnum::Shaders::MeshVisualizerGL2D::SecondaryJointIds new in Git master

Secondary joint ids.

Generic attribute, Magnum::Vector4ui. Used only if secondaryPerVertexJointCount() isn't 0.

typedef GenericGL3D::SecondaryWeights Magnum::Shaders::MeshVisualizerGL2D::SecondaryWeights new in Git master

Secondary weights.

Generic attribute, Magnum::Vector4. Used only if secondaryPerVertexJointCount() isn't 0.

typedef GL::Attribute<4, Float> Magnum::Shaders::MeshVisualizerGL2D::VertexIndex

Vertex index.

See MeshVisualizerGL3D::VertexIndex for more information.

typedef GenericGL2D::ObjectId Magnum::Shaders::MeshVisualizerGL2D::ObjectId new in 2020.06

(Instanced) object ID

Generic attribute, Magnum::UnsignedInt. Used only if Flag::InstancedObjectId is set.

typedef GenericGL2D::TextureOffset Magnum::Shaders::MeshVisualizerGL2D::TextureOffset new in Git master

(Instanced) texture offset for an object ID texture

Generic attribute, Magnum::Vector2. Used only if Flag::InstancedTextureOffset is set.

typedef GenericGL2D::TextureOffsetLayer Magnum::Shaders::MeshVisualizerGL2D::TextureOffsetLayer new in Git master

(Instanced) texture offset and layer for an object ID texture

Generic attribute, Magnum::Vector3, with the last component interpreted as an integer. Use either this or the TextureOffset attribute. First two components used only if Flag::InstancedTextureOffset is set, third component only if Flag::TextureArrays is set.

Function documentation

static CompileState Magnum::Shaders::MeshVisualizerGL2D::compile(const Configuration& configuration) new in Git master

Compile asynchronously.

Compared to MeshVisualizerGL2D(const Configuration&) can perform an asynchronous compilation and linking. See Async shader compilation and linking for more information.

static CompileState Magnum::Shaders::MeshVisualizerGL2D::compile(Flags flags)

Compile asynchronously.

static CompileState Magnum::Shaders::MeshVisualizerGL2D::compile(Flags flags, UnsignedInt materialCount, UnsignedInt drawCount)

Compile for a multi-draw scenario asynchronously.

Magnum::Shaders::MeshVisualizerGL2D::MeshVisualizerGL2D(Flags flags) explicit

Constructor.

Magnum::Shaders::MeshVisualizerGL2D::MeshVisualizerGL2D(Flags flags, UnsignedInt materialCount, UnsignedInt drawCount) explicit

Construct for a multi-draw scenario.

Magnum::Shaders::MeshVisualizerGL2D::MeshVisualizerGL2D(CompileState&& state) explicit new in Git master

Finalize an asynchronous compilation.

Takes an asynchronous compilation state returned by compile() and forms a ready-to-use shader object. See Async shader compilation and linking for more information.

Magnum::Shaders::MeshVisualizerGL2D::MeshVisualizerGL2D(NoCreateT) explicit noexcept

Construct without creating the underlying OpenGL object.

The constructed instance is equivalent to a moved-from state. Useful in cases where you will overwrite the instance later anyway. Move another object over it to make it useful.

This function can be safely used for constructing (and later destructing) objects even without any OpenGL context being active. However note that this is a low-level and a potentially dangerous API, see the documentation of NoCreate for alternatives.

Flags Magnum::Shaders::MeshVisualizerGL2D::flags() const

Flags.

UnsignedInt Magnum::Shaders::MeshVisualizerGL2D::jointCount() const new in Git master

Joint count.

If Flag::UniformBuffers is not set, this is the number of joint matrices accepted by setJointMatrices() / setJointMatrix(). If Flag::UniformBuffers is set, this is the statically defined size of the TransformationUniform2D uniform buffer bound with bindJointBuffer().

UnsignedInt Magnum::Shaders::MeshVisualizerGL2D::perVertexJointCount() const new in Git master

Per-vertex joint count.

Returns the value set with Configuration::setJointCount(). If Flag::DynamicPerVertexJointCount is set, the count can be additionally modified per-draw using setPerVertexJointCount().

UnsignedInt Magnum::Shaders::MeshVisualizerGL2D::secondaryPerVertexJointCount() const new in Git master

Secondary per-vertex joint count.

Returns the value set with Configuration::setJointCount(). If Flag::DynamicPerVertexJointCount is set, the count can be additionally modified per-draw using setPerVertexJointCount().

UnsignedInt Magnum::Shaders::MeshVisualizerGL2D::materialCount() const new in Git master

Material count.

Statically defined size of the MeshVisualizerMaterialUniform uniform buffer bound with bindMaterialBuffer(). Has use only if Flag::UniformBuffers is set.

UnsignedInt Magnum::Shaders::MeshVisualizerGL2D::drawCount() const new in Git master

Draw count.

Statically defined size of each of the TransformationProjectionUniform2D and MeshVisualizerDrawUniform2D uniform buffers bound with bindTransformationProjectionBuffer() and bindDrawBuffer(). Has use only if Flag::UniformBuffers is set.

MeshVisualizerGL2D& Magnum::Shaders::MeshVisualizerGL2D::setPerVertexJointCount(UnsignedInt count, UnsignedInt secondaryCount = 0) new in Git master

Set dynamic per-vertex skinning joint count.

Returns Reference to self (for method chaining)

Allows reducing the count of iterated joints for a particular draw call, making it possible to use a single shader with meshes that contain different count of per-vertex joints. See Flag::DynamicPerVertexJointCount for more information. As the joint count is tied to the mesh layout, this is a per-draw-call setting even in case of Flag::UniformBuffers instead of being a value in MeshVisualizerDrawUniform2D. Initial value is same as perVertexJointCount() and secondaryPerVertexJointCount().

Expects that Flag::DynamicPerVertexJointCount is set, count is not larger than perVertexJointCount() and secondaryCount not larger than secondaryPerVertexJointCount().

MeshVisualizerGL2D& Magnum::Shaders::MeshVisualizerGL2D::setTransformationProjectionMatrix(const Matrix3& matrix)

Set transformation and projection matrix.

Returns Reference to self (for method chaining)

Initial value is an identity matrix. If Flag::InstancedTransformation is set, the per-instance transformation matrix coming from the TransformationMatrix attribute is applied first, before this one.

Expects that Flag::UniformBuffers is not set, in that case fill TransformationProjectionUniform2D::transformationProjectionMatrix and call bindTransformationProjectionBuffer() instead.

MeshVisualizerGL2D& Magnum::Shaders::MeshVisualizerGL2D::setTextureMatrix(const Matrix3& matrix) new in Git master

Set texture coordinate transformation matrix for an object ID texture.

Returns Reference to self (for method chaining)

Expects that the shader was created with Flag::TextureTransformation enabled. Initial value is an identity matrix. If Flag::InstancedTextureOffset is set, the per-instance offset coming from the TextureOffset attribute is applied first, before this matrix.

Expects that Flag::UniformBuffers is not set, in that case fill TextureTransformationUniform::rotationScaling and TextureTransformationUniform::offset and call bindTextureTransformationBuffer() instead.

MeshVisualizerGL2D& Magnum::Shaders::MeshVisualizerGL2D::setTextureLayer(UnsignedInt layer) new in Git master

Set texture array layer for an object ID texture.

Returns Reference to self (for method chaining)

Expects that the shader was created with Flag::TextureArrays enabled. Initial value is 0. If Flag::InstancedTextureOffset is set and a three-component TextureOffsetLayer attribute is used instead of TextureOffset, this value is added to the layer coming from the third component.

Expects that Flag::UniformBuffers is not set, in that case fill TextureTransformationUniform::layer and call bindTextureTransformationBuffer() instead.

MeshVisualizerGL2D& Magnum::Shaders::MeshVisualizerGL2D::setViewportSize(const Vector2& size)

Set viewport size.

Returns Reference to self (for method chaining)

Has effect only if Flag::Wireframe is enabled and geometry shaders are used, otherwise it does nothing. Initial value is a zero vector.

MeshVisualizerGL2D& Magnum::Shaders::MeshVisualizerGL2D::setObjectId(UnsignedInt id) new in Git master

Set object ID.

Returns Reference to self (for method chaining)

Expects that Flag::ObjectId is enabled. Initial value is 0. If Flag::InstancedObjectId is enabled as well, this value is added to the ID coming from the ObjectId attribute.

Expects that Flag::UniformBuffers is not set, in that case fill MeshVisualizerDrawUniform2D::objectId and call bindDrawBuffer() instead.

MeshVisualizerGL2D& Magnum::Shaders::MeshVisualizerGL2D::setColor(const Color4& color)

Set base object color.

Returns Reference to self (for method chaining)

Initial value is 0xffffffff_rgbaf. Expects that either Flag::Wireframe or Flag::InstancedObjectId / Flag::PrimitiveId / Flag::PrimitiveIdFromVertexId is enabled. In case of the latter, the color is multiplied with the color map coming from bindColorMapTexture().

Expects that Flag::UniformBuffers is not set, in that case fill MeshVisualizerMaterialUniform::color and call bindMaterialBuffer() instead.

MeshVisualizerGL2D& Magnum::Shaders::MeshVisualizerGL2D::setWireframeColor(const Color4& color)

Set wireframe color.

Returns Reference to self (for method chaining)

Initial value is 0x000000ff_rgbaf. Expects that Flag::Wireframe is enabled.

Expects that Flag::UniformBuffers is not set, in that case fill MeshVisualizerMaterialUniform::wireframeColor and call bindMaterialBuffer() instead.

MeshVisualizerGL2D& Magnum::Shaders::MeshVisualizerGL2D::setWireframeWidth(Float width)

Set wireframe width.

Returns Reference to self (for method chaining)

The value is in screen space (depending on setViewportSize()), initial value is 1.0f. Expects that Flag::Wireframe is enabled.

Expects that Flag::UniformBuffers is not set, in that case fill MeshVisualizerMaterialUniform::wireframeWidth and call bindMaterialBuffer() instead.

MeshVisualizerGL2D& Magnum::Shaders::MeshVisualizerGL2D::setColorMapTransformation(Float offset, Float scale) new in 2020.06

Set color map transformation.

Returns Reference to self (for method chaining)

Offset and scale applied to the input value coming either from the ObjectId attribute or gl_PrimitiveID, resulting value is then used to fetch a color from a color map bound with bindColorMapTexture(). Initial value is 1.0f/512.0f and 1.0/256.0f, meaning that for a 256-entry colormap the first 256 values get an exact color from it and the next values will be either clamped to last color or repeated depending on the color map texture wrapping mode. Expects that either Flag::InstancedObjectId or Flag::PrimitiveId / Flag::PrimitiveIdFromVertexId is enabled.

Expects that Flag::UniformBuffers is not set, in that case fill MeshVisualizerMaterialUniform::colorMapOffset and MeshVisualizerMaterialUniform::colorMapScale and call bindMaterialBuffer() instead.

MeshVisualizerGL2D& Magnum::Shaders::MeshVisualizerGL2D::setSmoothness(Float smoothness)

Set line smoothness.

Returns Reference to self (for method chaining)

Value is in screen space (depending on setViewportSize()), initial value is 2.0f. Expects that Flag::Wireframe is enabled.

Expects that Flag::UniformBuffers is not set, in that case fill MeshVisualizerMaterialUniform::smoothness and call bindMaterialBuffer() instead.

MeshVisualizerGL2D& Magnum::Shaders::MeshVisualizerGL2D::setJointMatrices(const Containers::ArrayView<const Matrix3> matrices) new in Git master

Set joint matrices.

Returns Reference to self (for method chaining)

Initial values are identity transformations. Expects that the size of the matrices array is not larger than jointCount().

Expects that Flag::UniformBuffers is not set, in that case fill TransformationUniform2D::transformationMatrix and call bindJointBuffer() instead.

MeshVisualizerGL2D& Magnum::Shaders::MeshVisualizerGL2D::setJointMatrices(std::initializer_list<Matrix3> matrices) new in Git master

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

MeshVisualizerGL2D& Magnum::Shaders::MeshVisualizerGL2D::setJointMatrix(UnsignedInt id, const Matrix3& matrix) new in Git master

Set joint matrix for given joint.

Returns Reference to self (for method chaining)

Unlike setJointMatrices() updates just a single joint matrix. Expects that id is less than jointCount().

Expects that Flag::UniformBuffers is not set, in that case fill TransformationUniform2D::transformationMatrix and call bindJointBuffer() instead.

MeshVisualizerGL2D& Magnum::Shaders::MeshVisualizerGL2D::setPerInstanceJointCount(UnsignedInt count) new in Git master

Set per-instance joint count.

Returns Reference to self (for method chaining)

Offset added to joint IDs in the JointIds and SecondaryJointIds in instanced draws. Should be less than jointCount(). Initial value is 0, meaning every instance will use the same joint matrices, setting it to a non-zero value causes the joint IDs to be interpreted as gl_InstanceID*count + jointId.

Expects that Flag::UniformBuffers is not set, in that case fill MeshVisualizerDrawUniform2D::perInstanceJointCount and call bindDrawBuffer() instead.

MeshVisualizerGL2D& Magnum::Shaders::MeshVisualizerGL2D::setDrawOffset(UnsignedInt offset) new in Git master

Set a draw offset.

Returns Reference to self (for method chaining)

Specifies which item in the TransformationProjectionUniform2D and MeshVisualizerDrawUniform2D buffers bound with bindTransformationProjectionBuffer() and bindDrawBuffer() should be used for current draw. Expects that Flag::UniformBuffers is set and offset is less than drawCount(). Initial value is 0, if drawCount() is 1, the function is a no-op as the shader assumes draw offset to be always zero.

If Flag::MultiDraw is set, gl_DrawID is added to this value, which makes each draw submitted via GL::AbstractShaderProgram::draw(const Containers::Iterable<MeshView>&) pick up its own per-draw parameters.

MeshVisualizerGL2D& Magnum::Shaders::MeshVisualizerGL2D::bindTransformationProjectionBuffer(GL::Buffer& buffer) new in Git master

Bind a transformation and projection uniform buffer.

Returns Reference to self (for method chaining)

Expects that Flag::UniformBuffers is set. The buffer is expected to contain drawCount() instances of TransformationUniform3D. At the very least you need to call also bindDrawBuffer() and bindMaterialBuffer().

MeshVisualizerGL2D& Magnum::Shaders::MeshVisualizerGL2D::bindTransformationProjectionBuffer(GL::Buffer& buffer, GLintptr offset, GLsizeiptr size) new in Git master

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

MeshVisualizerGL2D& Magnum::Shaders::MeshVisualizerGL2D::bindDrawBuffer(GL::Buffer& buffer) new in Git master

Bind a draw uniform buffer.

Returns Reference to self (for method chaining)

Expects that Flag::UniformBuffers is set. The buffer is expected to contain drawCount() instances of MeshVisualizerDrawUniform2D. At the very least you need to call also bindTransformationProjectionBuffer() and bindMaterialBuffer().

MeshVisualizerGL2D& Magnum::Shaders::MeshVisualizerGL2D::bindDrawBuffer(GL::Buffer& buffer, GLintptr offset, GLsizeiptr size) new in Git master

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

MeshVisualizerGL2D& Magnum::Shaders::MeshVisualizerGL2D::bindTextureTransformationBuffer(GL::Buffer& buffer) new in Git master

Bind a texture transformation uniform buffer for an object ID texture.

Returns Reference to self (for method chaining)

Expects that both Flag::UniformBuffers and Flag::TextureTransformation is set. The buffer is expected to contain drawCount() instances of TextureTransformationUniform.

MeshVisualizerGL2D& Magnum::Shaders::MeshVisualizerGL2D::bindTextureTransformationBuffer(GL::Buffer& buffer, GLintptr offset, GLsizeiptr size) new in Git master

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

MeshVisualizerGL2D& Magnum::Shaders::MeshVisualizerGL2D::bindMaterialBuffer(GL::Buffer& buffer) new in Git master

Bind a material uniform buffer.

Returns Reference to self (for method chaining)

Expects that Flag::UniformBuffers is set. The buffer is expected to contain materialCount() instances of MeshVisualizerMaterialUniform. At the very least you need to call also bindTransformationProjectionBuffer() and bindDrawBuffer().

MeshVisualizerGL2D& Magnum::Shaders::MeshVisualizerGL2D::bindMaterialBuffer(GL::Buffer& buffer, GLintptr offset, GLsizeiptr size) new in Git master

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

MeshVisualizerGL2D& Magnum::Shaders::MeshVisualizerGL2D::bindJointBuffer(GL::Buffer& buffer) new in Git master

Bind a joint matrix uniform buffer.

Returns Reference to self (for method chaining)

Expects that Flag::UniformBuffers is set. The buffer is expected to contain jointCount() instances of TransformationUniform2D.

MeshVisualizerGL2D& Magnum::Shaders::MeshVisualizerGL2D::bindJointBuffer(GL::Buffer& buffer, GLintptr offset, GLsizeiptr size) new in Git master

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

MeshVisualizerGL2D& Magnum::Shaders::MeshVisualizerGL2D::bindColorMapTexture(GL::Texture2D& texture) new in 2020.06

Bind a color map texture.

Returns Reference to self (for method chaining)

See also setColorMapTransformation(). Expects that either Flag::InstancedObjectId or Flag::PrimitiveId / Flag::PrimitiveIdFromVertexId is enabled.

MeshVisualizerGL2D& Magnum::Shaders::MeshVisualizerGL2D::bindObjectIdTexture(GL::Texture2D& texture) new in Git master

Bind an object ID texture.

Returns Reference to self (for method chaining)

Expects that the shader was created with Flag::ObjectIdTexture enabled. If Flag::TextureArrays is enabled as well, use bindObjectIdTexture(GL::Texture2DArray&) instead. The texture needs to have an unsigned integer format.

MeshVisualizerGL2D& Magnum::Shaders::MeshVisualizerGL2D::bindObjectIdTexture(GL::Texture2DArray& texture) new in Git master

Bind an object ID array texture.

Returns Reference to self (for method chaining)

Expects that the shader was created with both Flag::ObjectIdTexture and Flag::TextureArrays enabled. If Flag::UniformBuffers is not enabled, the layer is set via setTextureLayer(); if Flag::UniformBuffers is enabled, Flag::TextureTransformation has to be enabled as well and the layer is set via TextureTransformationUniform::layer.

Debug& operator<<(Debug& debug, MeshVisualizerGL2D::Flag value)

Debug output operator.

Debug& operator<<(Debug& debug, MeshVisualizerGL2D::Flags value)

Debug output operator.