Copyright	(c) Sven Panne 2002-2019
License	BSD3
Maintainer	Sven Panne <svenpanne@gmail.com>
Stability	stable
Portability	portable
Safe Haskell	None
Language	Haskell2010

Graphics.Rendering.OpenGL.GL.PerFragment

Contents

Description

This module corresponds to section 4.1 (Per-Fragment Operations) of the OpenGL 2.1 specs.

Synopsis

rasterizerDiscard :: StateVar Capability
discardingRasterizer :: IO a -> IO a
scissor :: StateVar (Maybe (Position, Size))
sampleAlphaToCoverage :: StateVar Capability
sampleAlphaToOne :: StateVar Capability
sampleCoverage :: StateVar (Maybe (GLclampf, Bool))
depthBounds :: StateVar (Maybe (GLclampd, GLclampd))
data ComparisonFunction
- = Never
- | Less
- | Equal
- | Lequal
- | Greater
- | Notequal
- | Gequal
- | Always
alphaFunc :: StateVar (Maybe (ComparisonFunction, GLclampf))
stencilTest :: StateVar Capability
stencilFunc :: StateVar (ComparisonFunction, GLint, GLuint)
stencilFuncSeparate :: Face -> StateVar (ComparisonFunction, GLint, GLuint)
data StencilOp
- = OpZero
- | OpKeep
- | OpReplace
- | OpIncr
- | OpIncrWrap
- | OpDecr
- | OpDecrWrap
- | OpInvert
stencilOp :: StateVar (StencilOp, StencilOp, StencilOp)
stencilOpSeparate :: Face -> StateVar (StencilOp, StencilOp, StencilOp)
activeStencilFace :: StateVar (Maybe Face)
depthFunc :: StateVar (Maybe ComparisonFunction)
blend :: StateVar Capability
blendBuffer :: DrawBufferIndex -> StateVar Capability
data BlendEquation
- = FuncAdd
- | FuncSubtract
- | FuncReverseSubtract
- | Min
- | Max
- | LogicOp
blendEquation :: StateVar BlendEquation
blendEquationSeparate :: StateVar (BlendEquation, BlendEquation)
data BlendingFactor
- = Zero
- | One
- | SrcColor
- | OneMinusSrcColor
- | DstColor
- | OneMinusDstColor
- | SrcAlpha
- | OneMinusSrcAlpha
- | DstAlpha
- | OneMinusDstAlpha
- | ConstantColor
- | OneMinusConstantColor
- | ConstantAlpha
- | OneMinusConstantAlpha
- | SrcAlphaSaturate
blendFuncSeparate :: StateVar ((BlendingFactor, BlendingFactor), (BlendingFactor, BlendingFactor))
blendFunc :: StateVar (BlendingFactor, BlendingFactor)
blendColor :: StateVar (Color4 GLclampf)
dither :: StateVar Capability
data LogicOp
- = Clear
- | And
- | AndReverse
- | Copy
- | AndInverted
- | Noop
- | Xor
- | Or
- | Nor
- | Equiv
- | Invert
- | OrReverse
- | CopyInverted
- | OrInverted
- | Nand
- | Set
logicOp :: StateVar (Maybe LogicOp)

Discarding Primitives Before Rasterization

rasterizerDiscard :: StateVar Capability Source #

discardingRasterizer :: IO a -> IO a Source #

Scissor Test

scissor :: StateVar (Maybe (Position, Size)) Source #

Multisample Fragment Operations

sampleAlphaToCoverage :: StateVar Capability Source #

sampleAlphaToOne :: StateVar Capability Source #

sampleCoverage :: StateVar (Maybe (GLclampf, Bool)) Source #

Depth Bounds Test

depthBounds :: StateVar (Maybe (GLclampd, GLclampd)) Source #

Alpha Test

data ComparisonFunction Source #

Constructors

Never
Less
Equal
Lequal
Greater
Notequal
Gequal
Always

Instances

Eq ComparisonFunction Source #
Instance details Defined in Graphics.Rendering.OpenGL.GL.ComparisonFunction Methods (==) :: ComparisonFunction -> ComparisonFunction -> Bool # (/=) :: ComparisonFunction -> ComparisonFunction -> Bool #
Ord ComparisonFunction Source #
Instance details Defined in Graphics.Rendering.OpenGL.GL.ComparisonFunction Methods compare :: ComparisonFunction -> ComparisonFunction -> Ordering # (<) :: ComparisonFunction -> ComparisonFunction -> Bool # (<=) :: ComparisonFunction -> ComparisonFunction -> Bool # (>) :: ComparisonFunction -> ComparisonFunction -> Bool # (>=) :: ComparisonFunction -> ComparisonFunction -> Bool # max :: ComparisonFunction -> ComparisonFunction -> ComparisonFunction # min :: ComparisonFunction -> ComparisonFunction -> ComparisonFunction #
Show ComparisonFunction Source #
Instance details Defined in Graphics.Rendering.OpenGL.GL.ComparisonFunction Methods showsPrec :: Int -> ComparisonFunction -> ShowS # show :: ComparisonFunction -> String # showList :: [ComparisonFunction] -> ShowS #

alphaFunc :: StateVar (Maybe (ComparisonFunction, GLclampf)) Source #

Stencil Test

stencilTest :: StateVar Capability Source #

stencilFunc :: StateVar (ComparisonFunction, GLint, GLuint) Source #

stencilFuncSeparate :: Face -> StateVar (ComparisonFunction, GLint, GLuint) Source #

data StencilOp Source #

Constructors

OpZero
OpKeep
OpReplace
OpIncr
OpIncrWrap
OpDecr
OpDecrWrap
OpInvert

Instances

Eq StencilOp Source #
Instance details Defined in Graphics.Rendering.OpenGL.GL.PerFragment Methods (==) :: StencilOp -> StencilOp -> Bool # (/=) :: StencilOp -> StencilOp -> Bool #
Ord StencilOp Source #
Instance details Defined in Graphics.Rendering.OpenGL.GL.PerFragment Methods compare :: StencilOp -> StencilOp -> Ordering # (<) :: StencilOp -> StencilOp -> Bool # (<=) :: StencilOp -> StencilOp -> Bool # (>) :: StencilOp -> StencilOp -> Bool # (>=) :: StencilOp -> StencilOp -> Bool # max :: StencilOp -> StencilOp -> StencilOp # min :: StencilOp -> StencilOp -> StencilOp #
Show StencilOp Source #
Instance details Defined in Graphics.Rendering.OpenGL.GL.PerFragment Methods showsPrec :: Int -> StencilOp -> ShowS # show :: StencilOp -> String # showList :: [StencilOp] -> ShowS #

stencilOp :: StateVar (StencilOp, StencilOp, StencilOp) Source #

stencilOpSeparate :: Face -> StateVar (StencilOp, StencilOp, StencilOp) Source #

activeStencilFace :: StateVar (Maybe Face) Source #

Depth Buffer Test

depthFunc :: StateVar (Maybe ComparisonFunction) Source #

Blending

blend :: StateVar Capability Source #

blendBuffer :: DrawBufferIndex -> StateVar Capability Source #

enable or disable blending based on the buffer bound to the i'th drawBuffer that is the buffer fmap (!! i) (get drawBuffers)

data BlendEquation Source #

Constructors

FuncAdd
FuncSubtract
FuncReverseSubtract
Min
Max
LogicOp

Instances

Eq BlendEquation Source #
Instance details Defined in Graphics.Rendering.OpenGL.GL.PerFragment Methods (==) :: BlendEquation -> BlendEquation -> Bool # (/=) :: BlendEquation -> BlendEquation -> Bool #
Ord BlendEquation Source #
Instance details Defined in Graphics.Rendering.OpenGL.GL.PerFragment Methods compare :: BlendEquation -> BlendEquation -> Ordering # (<) :: BlendEquation -> BlendEquation -> Bool # (<=) :: BlendEquation -> BlendEquation -> Bool # (>) :: BlendEquation -> BlendEquation -> Bool # (>=) :: BlendEquation -> BlendEquation -> Bool # max :: BlendEquation -> BlendEquation -> BlendEquation # min :: BlendEquation -> BlendEquation -> BlendEquation #
Show BlendEquation Source #
Instance details Defined in Graphics.Rendering.OpenGL.GL.PerFragment Methods showsPrec :: Int -> BlendEquation -> ShowS # show :: BlendEquation -> String # showList :: [BlendEquation] -> ShowS #

blendEquation :: StateVar BlendEquation Source #

blendEquationSeparate :: StateVar (BlendEquation, BlendEquation) Source #

data BlendingFactor Source #

Constructors

Zero
One
SrcColor
OneMinusSrcColor
DstColor
OneMinusDstColor
SrcAlpha
OneMinusSrcAlpha
DstAlpha
OneMinusDstAlpha
ConstantColor
OneMinusConstantColor
ConstantAlpha
OneMinusConstantAlpha
SrcAlphaSaturate

Instances

Eq BlendingFactor Source #
Instance details Defined in Graphics.Rendering.OpenGL.GL.BlendingFactor Methods (==) :: BlendingFactor -> BlendingFactor -> Bool # (/=) :: BlendingFactor -> BlendingFactor -> Bool #
Ord BlendingFactor Source #
Instance details Defined in Graphics.Rendering.OpenGL.GL.BlendingFactor Methods compare :: BlendingFactor -> BlendingFactor -> Ordering # (<) :: BlendingFactor -> BlendingFactor -> Bool # (<=) :: BlendingFactor -> BlendingFactor -> Bool # (>) :: BlendingFactor -> BlendingFactor -> Bool # (>=) :: BlendingFactor -> BlendingFactor -> Bool # max :: BlendingFactor -> BlendingFactor -> BlendingFactor # min :: BlendingFactor -> BlendingFactor -> BlendingFactor #
Show BlendingFactor Source #
Instance details Defined in Graphics.Rendering.OpenGL.GL.BlendingFactor Methods showsPrec :: Int -> BlendingFactor -> ShowS # show :: BlendingFactor -> String # showList :: [BlendingFactor] -> ShowS #

blendFuncSeparate :: StateVar ((BlendingFactor, BlendingFactor), (BlendingFactor, BlendingFactor)) Source #

blendFunc :: StateVar (BlendingFactor, BlendingFactor) Source #

blendColor :: StateVar (Color4 GLclampf) Source #

Dithering

dither :: StateVar Capability Source #

Logical Operation

data LogicOp Source #

Constructors

Clear
And
AndReverse
Copy
AndInverted
Noop
Xor
Or
Nor
Equiv
Invert
OrReverse
CopyInverted
OrInverted
Nand
Set

Instances

Eq LogicOp Source #
Instance details Defined in Graphics.Rendering.OpenGL.GL.PerFragment Methods (==) :: LogicOp -> LogicOp -> Bool # (/=) :: LogicOp -> LogicOp -> Bool #
Ord LogicOp Source #
Instance details Defined in Graphics.Rendering.OpenGL.GL.PerFragment Methods compare :: LogicOp -> LogicOp -> Ordering # (<) :: LogicOp -> LogicOp -> Bool # (<=) :: LogicOp -> LogicOp -> Bool # (>) :: LogicOp -> LogicOp -> Bool # (>=) :: LogicOp -> LogicOp -> Bool # max :: LogicOp -> LogicOp -> LogicOp # min :: LogicOp -> LogicOp -> LogicOp #
Show LogicOp Source #
Instance details Defined in Graphics.Rendering.OpenGL.GL.PerFragment Methods showsPrec :: Int -> LogicOp -> ShowS # show :: LogicOp -> String # showList :: [LogicOp] -> ShowS #

logicOp :: StateVar (Maybe LogicOp) Source #