Graphics.Rendering.OpenGL.GL.VertexSpec

Specify the (x, y, z, w) coordinates of a four-dimensional vertex. This must only be done during renderPrimitive, otherwise the behaviour is unspecified. The current values of the auxiliary vertex attributes are associated with the vertex.

Note that there is no such thing as a "current vertex" which could be retrieved.

Methods

vertex :: a -> IO ()

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vertexv :: Ptr a -> IO ()

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Instances

VertexComponent a => Vertex (Vertex2 a)

VertexComponent a => Vertex (Vertex3 a)

VertexComponent a => Vertex (Vertex4 a)

class VertexComponent a

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The class of all types which can be used as a vertex coordinate.

Instances

VertexComponent GLdouble

VertexComponent GLfloat

VertexComponent GLint

VertexComponent GLshort

data Vertex2 a

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A vertex with z=0 and w=1.

Constructors

Vertex2 !a !a

Instances

TrimmingPoint Vertex2

Eq a => Eq (Vertex2 a)

Ord a => Ord (Vertex2 a)

RasterPosComponent a => RasterPos (Vertex2 a)

Show a => Show (Vertex2 a)

Storable a => Storable (Vertex2 a)

UniformComponent a => Uniform (Vertex2 a)

VertexComponent a => Vertex (Vertex2 a)

VertexAttribComponent a => VertexAttrib (Vertex2 a)

WindowPosComponent a => WindowPos (Vertex2 a)

data Vertex3 a

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A vertex with w=1.

Constructors

Vertex3 !a !a !a

Instances

ControlPoint Vertex3

TrimmingPoint Vertex3

Eq a => Eq (Vertex3 a)

Ord a => Ord (Vertex3 a)

RasterPosComponent a => RasterPos (Vertex3 a)

Show a => Show (Vertex3 a)

Storable a => Storable (Vertex3 a)

UniformComponent a => Uniform (Vertex3 a)

VertexComponent a => Vertex (Vertex3 a)

VertexAttribComponent a => VertexAttrib (Vertex3 a)

WindowPosComponent a => WindowPos (Vertex3 a)

data Vertex4 a

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A fully-fledged four-dimensional vertex.

Constructors

Vertex4 !a !a !a !a

Instances

ControlPoint Vertex4

Eq a => Eq (Vertex4 a)

Ord a => Ord (Vertex4 a)

RasterPosComponent a => RasterPos (Vertex4 a)

Show a => Show (Vertex4 a)

Storable a => Storable (Vertex4 a)

UniformComponent a => Uniform (Vertex4 a)

VertexComponent a => Vertex (Vertex4 a)

VertexAttribComponent a => VertexAttrib (Vertex4 a)

Auxiliary Vertex Attributes

Apart from its coordinates in four-dimensional space, every vertex has associated auxiliary attributes: Its texture coordinates, a normal, a fog coordinate, and a color plus a secondary color. For every attribute, the OpenGL state contains its current value, which can be changed at any time.

Every attribute has a "natural" format via which it can be manipulated directly as part of the OpenGL state, e.g. the current texture coordinates are internally handled as TexCoord4 GLfloat. Different formats are converted to this format, e.g. the s, r, and t coordinates of a TexCoord3 GLint are converted to floating point values and a q coordinate of 1.0 is implicitly assumed.

Consequently, the vast majority of classes, functions, and data types in this module are for convenience only and offer no additional functionality.

Texture Coordinates

currentTextureCoords :: StateVar (TexCoord4 GLfloat)

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The current texture coordinates (s, t, r, q) for the current texture unit (see activeTexture). The initial value is (0,0,0,1) for all texture units.

class TexCoord a where

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Change the current texture coordinates of the current or given texture unit.

Methods

texCoord :: a -> IO ()

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texCoordv :: Ptr a -> IO ()

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multiTexCoord :: TextureUnit -> a -> IO ()

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multiTexCoordv :: TextureUnit -> Ptr a -> IO ()

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Instances

TexCoordComponent a => TexCoord (TexCoord1 a)

TexCoordComponent a => TexCoord (TexCoord2 a)

TexCoordComponent a => TexCoord (TexCoord3 a)

TexCoordComponent a => TexCoord (TexCoord4 a)

class TexCoordComponent a

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The class of all types which can be used as a texture coordinate.

Instances

TexCoordComponent GLdouble

TexCoordComponent GLfloat

TexCoordComponent GLint

TexCoordComponent GLshort

newtype TexCoord1 a

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Texture coordinates with t=0, r=0, and q=1.

Constructors

TexCoord1 a

Instances

ControlPoint TexCoord1

Eq a => Eq (TexCoord1 a)

Ord a => Ord (TexCoord1 a)

Show a => Show (TexCoord1 a)

Storable a => Storable (TexCoord1 a)

TexCoordComponent a => TexCoord (TexCoord1 a)

UniformComponent a => Uniform (TexCoord1 a)

VertexAttribComponent a => VertexAttrib (TexCoord1 a)

data TexCoord2 a

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Texture coordinates with r=0 and q=1.

Constructors

TexCoord2 !a !a

Instances

ControlPoint TexCoord2

Eq a => Eq (TexCoord2 a)

Ord a => Ord (TexCoord2 a)

Show a => Show (TexCoord2 a)

Storable a => Storable (TexCoord2 a)

TexCoordComponent a => TexCoord (TexCoord2 a)

UniformComponent a => Uniform (TexCoord2 a)

VertexAttribComponent a => VertexAttrib (TexCoord2 a)

data TexCoord3 a

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Texture coordinates with q=1.

Constructors

TexCoord3 !a !a !a

Instances

ControlPoint TexCoord3

Eq a => Eq (TexCoord3 a)

Ord a => Ord (TexCoord3 a)

Show a => Show (TexCoord3 a)

Storable a => Storable (TexCoord3 a)

TexCoordComponent a => TexCoord (TexCoord3 a)

UniformComponent a => Uniform (TexCoord3 a)

VertexAttribComponent a => VertexAttrib (TexCoord3 a)

data TexCoord4 a

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Fully-fledged four-dimensional texture coordinates.

Constructors

TexCoord4 !a !a !a !a

Instances

ControlPoint TexCoord4

Eq a => Eq (TexCoord4 a)

Ord a => Ord (TexCoord4 a)

Show a => Show (TexCoord4 a)

Storable a => Storable (TexCoord4 a)

TexCoordComponent a => TexCoord (TexCoord4 a)

UniformComponent a => Uniform (TexCoord4 a)

VertexAttribComponent a => VertexAttrib (TexCoord4 a)

Normal

currentNormal :: StateVar (Normal3 GLfloat)

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The current normal (x, y, z). The initial value is the unit vector (0, 0, 1).

class Normal a where

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Change the current normal. Integral arguments are converted to floating-point with a linear mapping that maps the most positive representable integer value to 1.0, and the most negative representable integer value to -1.0.

Normals specified with normal or normalv need not have unit length. If normalize is enabled, then normals of any length specified with normal or normalv are normalized after transformation. If rescaleNormal is enabled, normals are scaled by a scaling factor derived from the modelview matrix. rescaleNormal requires that the originally specified normals were of unit length, and that the modelview matrix contains only uniform scales for proper results. Normalization is initially disabled.

Methods

normal :: a -> IO ()

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normalv :: Ptr a -> IO ()

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Instances

NormalComponent a => Normal (Normal3 a)

class NormalComponent a

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The class of all types which can be used as a component of a normal.

Instances

NormalComponent GLbyte

NormalComponent GLdouble

NormalComponent GLfloat

NormalComponent GLint

NormalComponent GLshort

data Normal3 a

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Constructors

Normal3 !a !a !a

Instances

ControlPoint Normal3

Eq a => Eq (Normal3 a)

NormalComponent a => Normal (Normal3 a)

Ord a => Ord (Normal3 a)

Show a => Show (Normal3 a)

Storable a => Storable (Normal3 a)

UniformComponent a => Uniform (Normal3 a)

VertexAttribComponent a => VertexAttrib (Normal3 a)

Fog Coordinate

currentFogCoord :: StateVar (FogCoord1 GLfloat)

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The current fog coordinate. The initial value is 0.

class FogCoord a where

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Change the current fog coordinate.

Methods

fogCoord :: a -> IO ()

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fogCoordv :: Ptr a -> IO ()

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Instances

FogCoordComponent a => FogCoord (FogCoord1 a)

class FogCoordComponent a

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The class of all types which can be used as the fog coordinate.

Instances

FogCoordComponent GLdouble

FogCoordComponent GLfloat

newtype FogCoord1 a

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A fog coordinate.

Constructors

FogCoord1 a

Instances

Eq a => Eq (FogCoord1 a)

FogCoordComponent a => FogCoord (FogCoord1 a)

Ord a => Ord (FogCoord1 a)

Show a => Show (FogCoord1 a)

Storable a => Storable (FogCoord1 a)

UniformComponent a => Uniform (FogCoord1 a)

VertexAttribComponent a => VertexAttrib (FogCoord1 a)

Color and Secondary Color

rgbaMode :: GettableStateVar Bool

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If rgbaMode contains True, the color buffers store RGBA value. If color indexes are stored, it contains False.

currentColor :: StateVar (Color4 GLfloat)

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class Color a where

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Change the current color.

Methods

color :: a -> IO ()

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colorv :: Ptr a -> IO ()

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Instances

ColorComponent a => Color (Color3 a)

ColorComponent a => Color (Color4 a)

currentSecondaryColor :: StateVar (Color3 GLfloat)

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class SecondaryColor a where

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Change the current secondary color.

Methods

secondaryColor :: a -> IO ()

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secondaryColorv :: Ptr a -> IO ()

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Instances

ColorComponent a => SecondaryColor (Color3 a)

class ColorComponent a

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The class of all types which can be used as a color component.

Instances

ColorComponent GLbyte

ColorComponent GLdouble

ColorComponent GLfloat

ColorComponent GLint

ColorComponent GLshort

ColorComponent GLubyte

ColorComponent GLuint

ColorComponent GLushort

data Color3 a

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Constructors

Color3 !a !a !a

Instances

ColorComponent a => Color (Color3 a)

Eq a => Eq (Color3 a)

Ord a => Ord (Color3 a)

ColorComponent a => SecondaryColor (Color3 a)

Show a => Show (Color3 a)

Storable a => Storable (Color3 a)

UniformComponent a => Uniform (Color3 a)

VertexAttribComponent a => VertexAttrib (Color3 a)

data Color4 a

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A fully-fledged RGBA color.

Constructors

Color4 !a !a !a !a

Instances

ControlPoint Color4

ColorComponent a => Color (Color4 a)

Eq a => Eq (Color4 a)

Ord a => Ord (Color4 a)

Show a => Show (Color4 a)

Storable a => Storable (Color4 a)

UniformComponent a => Uniform (Color4 a)

VertexAttribComponent a => VertexAttrib (Color4 a)

currentIndex :: StateVar (Index1 GLint)

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class Index a where

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Change the current color index.

Methods

index :: a -> IO ()

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indexv :: Ptr a -> IO ()

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Instances

IndexComponent a => Index (Index1 a)

class IndexComponent a

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The class of all types which can be used as a color index.

Instances

IndexComponent GLdouble

IndexComponent GLfloat

IndexComponent GLint

IndexComponent GLshort

IndexComponent GLubyte

newtype Index1 a

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A color index.

Constructors

Index1 a

Instances

ControlPoint Index1

Eq a => Eq (Index1 a)

IndexComponent a => Index (Index1 a)

Ord a => Ord (Index1 a)

Show a => Show (Index1 a)

Storable a => Storable (Index1 a)

UniformComponent a => Uniform (Index1 a)

VertexAttribComponent a => VertexAttrib (Index1 a)

Generic Vertex Attributes

newtype AttribLocation

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Constructors

AttribLocation GLuint

Instances

Eq AttribLocation

Ord AttribLocation

Show AttribLocation

class VertexAttrib a

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Instances

VertexAttribComponent a => VertexAttrib (Color3 a)

VertexAttribComponent a => VertexAttrib (Color4 a)

VertexAttribComponent a => VertexAttrib (FogCoord1 a)

VertexAttribComponent a => VertexAttrib (Index1 a)

VertexAttribComponent a => VertexAttrib (Normal3 a)

VertexAttribComponent a => VertexAttrib (TexCoord1 a)

VertexAttribComponent a => VertexAttrib (TexCoord2 a)

VertexAttribComponent a => VertexAttrib (TexCoord3 a)

VertexAttribComponent a => VertexAttrib (TexCoord4 a)

VertexAttribComponent a => VertexAttrib (Vertex2 a)

VertexAttribComponent a => VertexAttrib (Vertex3 a)

VertexAttribComponent a => VertexAttrib (Vertex4 a)

class VertexAttribComponent a where

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The class of all types which can be used as a generic vertex attribute.

Methods

vertexAttrib1 :: AttribLocation -> a -> IO ()

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vertexAttrib2 :: AttribLocation -> a -> a -> IO ()

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vertexAttrib3 :: AttribLocation -> a -> a -> a -> IO ()

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vertexAttrib4 :: AttribLocation -> a -> a -> a -> a -> IO ()

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vertexAttrib1v :: AttribLocation -> Ptr a -> IO ()

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vertexAttrib2v :: AttribLocation -> Ptr a -> IO ()

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vertexAttrib3v :: AttribLocation -> Ptr a -> IO ()

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vertexAttrib4v :: AttribLocation -> Ptr a -> IO ()

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Instances

VertexAttribComponent GLdouble

VertexAttribComponent GLfloat

VertexAttribComponent GLshort

Texture Units

newtype TextureUnit

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Identifies a texture unit via its number, which must be in the range of (0 .. maxTextureUnit).

Constructors

TextureUnit GLuint

Instances

Eq TextureUnit

Ord TextureUnit

Show TextureUnit

maxTextureUnit :: GettableStateVar TextureUnit

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An implementation must support at least 2 texture units, but it may support up to 32 ones. This state variable can be used to query the actual implementation limit.

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