Graphics.Luminance.Shader.Stage

Shader stage creation

data Stage

A shader Stage.

Instances

Eq Stage

Show Stage

data StageType

A shader Stage type.

Constructors

TessControlShader

TessEvaluationShader

VertexShader

GeometryShader

FragmentShader

Instances

Eq StageType

Show StageType

stageID :: Stage -> GLuint

createStage :: (HasStageError e, MonadError e m, MonadIO m, MonadResource m) => StageType -> String -> m Stage

Create a shader stage from a String representation of its source code and its type.

Note: on some hardware and backends, tessellation shaders aren’t available. That function throws UnsupportedStage error in such cases.

Error handling

data StageError

Error type of shaders.

'CompilationFailed reason' occurs when a shader fails to compile, and the String reason contains a description of the failure.

'UnsupportedStage stage' occurs when you try to create a shader which type is not supported on the current hardware.

Constructors

CompilationFailed String

UnsupportedStage StageType

Instances

Eq StageError

Show StageError

class HasStageError a where

Types that can handle StageError.

Methods

fromStageError :: StageError -> a