korge/korlibs.korge.view.filter/ShaderFilter

ShaderFilter

abstract class ShaderFilter : FilterWithFiltering

Abstract class for Views that paints the Texture using a FragmentShader (fragment).

Inherited versions of this filter, usually inherit computeBorder and fragment properties.

When building shaders by calling FragmentShader { ... }, you will have additionally access to: fragmentCoords, fragmentCoords01 properties and tex method to be used inside the shader.

Inheritors

ColorMatrixFilter

ColorTransformFilter

Convolute3Filter

DirectionalBlurFilter

Constructors

ShaderFilter

constructor()

Types

BaseProgramProvider

open class BaseProgramProvider : ShaderFilter.ProgramProvider

Companion

object Companion

ProgramProvider

interface ProgramProvider

TexInfoUB

object TexInfoUB : UniformBlock

Properties

allFilters

open val allFilters: List<Filter>

filtering

open override var filtering: Boolean

isIdentity

open val isIdentity: Boolean

programProvider

open val programProvider: ShaderFilter.ProgramProvider

recommendedFilterScale

open val recommendedFilterScale: Double

Functions

computeBorder

open override fun computeBorder(texWidth: Int, texHeight: Int): MarginInt

The number of pixels the passed texture should be bigger at each direction: left, right, top, left.

expandedBorderRectangle

fun Filter.expandedBorderRectangle(inp: Rectangle): Rectangle

getBorder

fun Filter.getBorder(texWidth: Int, texHeight: Int): MarginInt

render

open override fun render(ctx: RenderContext, matrix: Matrix, texture: Texture, texWidth: Int, texHeight: Int, renderColorMul: RGBA, blendMode: BlendMode, filterScale: Double)

The method in charge of rendering the texture transformed using ctx and matrix. The method receives a texture that should be the original image with computeBorder additional pixels on each side.

renderToTextureWithBorder

fun Filter.~~renderToTextureWithBorder~~(ctx: RenderContext, matrix: Matrix, texture: Texture, texWidth: Int, texHeight: Int, filterScale: Double, block: (Texture, matrix: Matrix) -> Unit)

renderToTextureWithBorderUnsafe

fun Filter.renderToTextureWithBorderUnsafe(ctx: RenderContext, matrix: Matrix, texture: Texture, texWidth: Int, texHeight: Int, filterScale: Double, result: RenderToTextureResult = RenderToTextureResult()): RenderToTextureResult