62 lines
1.8 KiB
TypeScript
62 lines
1.8 KiB
TypeScript
export class OutlinePipeline extends Phaser.Renderer.WebGL.Pipelines.TextureTintPipeline
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{
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// the unique id of this pipeline
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public static readonly KEY = 'Outline';
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/**
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* @param {Phaser.Game} game - the controller of the game instance
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*/
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constructor(game: Phaser.Game)
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{
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super({
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game: game,
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renderer: game.renderer,
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fragShader: `
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precision mediump float;
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uniform sampler2D uMainSampler;
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uniform vec2 uTextureSize;
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varying vec2 outTexCoord;
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varying float outTintEffect;
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varying vec4 outTint;
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void main(void)
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{
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vec4 texture = texture2D(uMainSampler, outTexCoord);
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vec4 texel = vec4(outTint.rgb * outTint.a, outTint.a);
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vec4 color = texture;
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if (outTintEffect == 0.0)
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{
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color = texture * texel;
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}
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else if (outTintEffect == 1.0)
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{
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color.rgb = mix(texture.rgb, outTint.rgb * outTint.a, texture.a);
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color.a = texture.a * texel.a;
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}
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else if (outTintEffect == 2.0)
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{
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color = texel;
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}
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vec2 onePixel = vec2(1.0, 1.0) / uTextureSize;
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float upAlpha = texture2D(uMainSampler, outTexCoord + vec2(0.0, onePixel.y)).a;
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float leftAlpha = texture2D(uMainSampler, outTexCoord + vec2(-onePixel.x, 0.0)).a;
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float downAlpha = texture2D(uMainSampler, outTexCoord + vec2(0.0, -onePixel.y)).a;
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float rightAlpha = texture2D(uMainSampler, outTexCoord + vec2(onePixel.x, 0.0)).a;
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if (texture.a == 0.0 && max(max(upAlpha, downAlpha), max(leftAlpha, rightAlpha)) == 1.0)
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{
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color = vec4(1.0, 1.0, 1.0, 1.0);
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}
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gl_FragColor = color;
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}
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`
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});
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}
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}
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