korge/korlibs.korge.view.filter/Convolute3Filter

Convolute3Filter

class Convolute3Filter(var kernel: Matrix4, dist: Double = 1.0, applyAlpha: Boolean = false) : ShaderFilter

A Filter that will convolute near pixels (3x3) with a kernel. https://en.wikipedia.org/wiki/Kernel_(image_processing)

Constructors

Convolute3Filter

constructor(kernel: Matrix4, dist: Double = 1.0, applyAlpha: Boolean = false)

Types

object Companion : ShaderFilter.BaseProgramProvider

object ConvoluteUB : UniformBlock

KernelNameProvider

object KernelNameProvider : ViewPropertyProvider.ItemsMapImpl<Matrix4>

Properties

open val allFilters: List<Filter>

var applyAlpha: Boolean

Whether or not kernel must be applied to the alpha component

var dist: Double

Distance between the origin pixel for sampling for edges

open override var filtering: Boolean

open val isIdentity: Boolean

var kernel: Matrix4

3x3 matrix representing a convolution kernel

var namedKernel: String

programProvider

open override val programProvider: ShaderFilter.ProgramProvider

recommendedFilterScale

open val recommendedFilterScale: Double

var weights: Matrix4

3x3 matrix representing a convolution kernel

Functions

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

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

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