OpenGL-2.2.1.1: A binding for the OpenGL graphics system Contents Index

Graphics.Rendering.OpenGL.GL.Shaders Portability portable Stability stable Maintainer sven.panne@aedion.de

Contents Shader Objects Program Objects Vertex attributes Uniform variables Implementation limits related to GLSL

Description

This module corresponds to sections 2.15 (Vertex Shaders) and section 3.11 (Fragment Shaders) of the OpenGL 2.1 specs.

Synopsis

class (Eq s, Ord s, Show s, ObjectName s) => Shader s data VertexShader data FragmentShader shaderDeleteStatus :: Shader s => s -> GettableStateVar Bool shaderSource :: Shader s => s -> StateVar [String] compileShader :: Shader s => s -> IO () compileStatus :: Shader s => s -> GettableStateVar Bool shaderInfoLog :: Shader s => s -> GettableStateVar String data Program programDeleteStatus :: Program -> GettableStateVar Bool attachedShaders :: Program -> StateVar ([VertexShader], [FragmentShader]) linkProgram :: Program -> IO () linkStatus :: Program -> GettableStateVar Bool programInfoLog :: Program -> GettableStateVar String validateProgram :: Program -> IO () validateStatus :: Program -> GettableStateVar Bool currentProgram :: StateVar (Maybe Program) attribLocation :: Program -> String -> StateVar AttribLocation data VariableType = Float' | FloatVec2 | FloatVec3 | FloatVec4 | FloatMat2 | FloatMat3 | FloatMat4 | Int' | IntVec2 | IntVec3 | IntVec4 | Bool | BoolVec2 | BoolVec3 | BoolVec4 | Sampler1D | Sampler2D | Sampler3D | SamplerCube | Sampler1DShadow | Sampler2DShadow activeAttribs :: Program -> GettableStateVar [(GLint, VariableType, String)] data UniformLocation uniformLocation :: Program -> String -> GettableStateVar UniformLocation activeUniforms :: Program -> GettableStateVar [(GLint, VariableType, String)] class Uniform a where uniform :: UniformLocation -> StateVar a uniformv :: UniformLocation -> GLsizei -> Ptr a -> IO () class Storable a => UniformComponent a maxVertexTextureImageUnits :: GettableStateVar GLsizei maxTextureImageUnits :: GettableStateVar GLsizei maxCombinedTextureImageUnits :: GettableStateVar GLsizei maxTextureCoords :: GettableStateVar GLsizei maxVertexUniformComponents :: GettableStateVar GLsizei maxFragmentUniformComponents :: GettableStateVar GLsizei maxVertexAttribs :: GettableStateVar GLsizei maxVaryingFloats :: GettableStateVar GLsizei

Shader Objects

class (Eq s, Ord s, Show s, ObjectName s) => Shader s

Instances Shader FragmentShader Shader VertexShader

data VertexShader

Instances Eq VertexShader ObjectName VertexShader Ord VertexShader Shader VertexShader Show VertexShader

data FragmentShader

Instances Eq FragmentShader ObjectName FragmentShader Ord FragmentShader Shader FragmentShader Show FragmentShader

shaderDeleteStatus :: Shader s => s -> GettableStateVar Bool

shaderSource :: Shader s => s -> StateVar [String]

compileShader :: Shader s => s -> IO ()

compileStatus :: Shader s => s -> GettableStateVar Bool

shaderInfoLog :: Shader s => s -> GettableStateVar String

Program Objects

data Program

Instances Eq Program ObjectName Program Ord Program Show Program

programDeleteStatus :: Program -> GettableStateVar Bool

attachedShaders :: Program -> StateVar ([VertexShader], [FragmentShader])

linkProgram :: Program -> IO ()

linkStatus :: Program -> GettableStateVar Bool

programInfoLog :: Program -> GettableStateVar String

validateProgram :: Program -> IO ()

validateStatus :: Program -> GettableStateVar Bool

currentProgram :: StateVar (Maybe Program)

Vertex attributes

attribLocation :: Program -> String -> StateVar AttribLocation

data VariableType

Constructors Float' FloatVec2 FloatVec3 FloatVec4 FloatMat2 FloatMat3 FloatMat4 Int' IntVec2 IntVec3 IntVec4 Bool BoolVec2 BoolVec3 BoolVec4 Sampler1D Sampler2D Sampler3D SamplerCube Sampler1DShadow Sampler2DShadow Instances Eq VariableType Ord VariableType Show VariableType

activeAttribs :: Program -> GettableStateVar [(GLint, VariableType, String)]

Uniform variables

data UniformLocation

Instances Eq UniformLocation Ord UniformLocation Show UniformLocation

uniformLocation :: Program -> String -> GettableStateVar UniformLocation

activeUniforms :: Program -> GettableStateVar [(GLint, VariableType, String)]

class Uniform a where

Methods uniform :: UniformLocation -> StateVar a uniformv :: UniformLocation -> GLsizei -> Ptr a -> IO () Instances UniformComponent a => Uniform (Color3 a) UniformComponent a => Uniform (Color4 a) UniformComponent a => Uniform (FogCoord1 a) UniformComponent a => Uniform (Index1 a) UniformComponent a => Uniform (Normal3 a) UniformComponent a => Uniform (TexCoord1 a) UniformComponent a => Uniform (TexCoord2 a) UniformComponent a => Uniform (TexCoord3 a) UniformComponent a => Uniform (TexCoord4 a) UniformComponent a => Uniform (Vertex2 a) UniformComponent a => Uniform (Vertex3 a) UniformComponent a => Uniform (Vertex4 a)

class Storable a => UniformComponent a

Instances UniformComponent GLfloat UniformComponent GLint

Implementation limits related to GLSL

maxVertexTextureImageUnits :: GettableStateVar GLsizei

Contains the number of hardware units that can be used to access texture maps from the vertex processor. The minimum legal value is 0.

maxTextureImageUnits :: GettableStateVar GLsizei

Contains the total number of hardware units that can be used to access texture maps from the fragment processor. The minimum legal value is 2.

maxCombinedTextureImageUnits :: GettableStateVar GLsizei

Contains the total number of hardware units that can be used to access texture maps from the vertex processor and the fragment processor combined. Note: If the vertex shader and the fragment processing stage access the same texture image unit, then that counts as using two texture image units. The minimum legal value is 2.

maxTextureCoords :: GettableStateVar GLsizei

Contains the number of texture coordinate sets that are available. The minimum legal value is 2.

maxVertexUniformComponents :: GettableStateVar GLsizei

Contains the number of individual components (i.e., floating-point, integer or boolean values) that are available for vertex shader uniform variables. The minimum legal value is 512.

maxFragmentUniformComponents :: GettableStateVar GLsizei

Contains the number of individual components (i.e., floating-point, integer or boolean values) that are available for fragment shader uniform variables. The minimum legal value is 64.

maxVertexAttribs :: GettableStateVar GLsizei

Contains the number of active vertex attributes that are available. The minimum legal value is 16.

maxVaryingFloats :: GettableStateVar GLsizei

Contains the number of individual floating-point values available for varying variables. The minimum legal value is 32.

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