63 lines
2.0 KiB
JavaScript
63 lines
2.0 KiB
JavaScript
import { ExtensionType } from '../extensions/Extensions.mjs';
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import { BlendModeFilter } from '../filters/blend-modes/BlendModeFilter.mjs';
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"use strict";
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class OverlayBlend extends BlendModeFilter {
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constructor() {
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super({
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gl: {
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functions: `
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float overlay(float base, float blend)
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{
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return (base < 0.5) ? (2.0*base*blend) : (1.0-2.0*(1.0-base)*(1.0-blend));
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}
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vec3 blendOverlay(vec3 base, vec3 blend, float opacity)
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{
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vec3 blended = vec3(
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overlay(base.r, blend.r),
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overlay(base.g, blend.g),
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overlay(base.b, blend.b)
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);
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return (blended * opacity + base * (1.0 - opacity));
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}
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`,
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main: `
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finalColor = vec4(blendOverlay(back.rgb, front.rgb,front.a), blendedAlpha) * uBlend;
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`
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},
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gpu: {
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functions: `
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fn overlay(base: f32, blend: f32) -> f32
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{
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return select((1.0-2.0*(1.0-base)*(1.0-blend)), (2.0*base*blend), base < 0.5);
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}
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fn blendOverlay(base: vec3<f32>, blend: vec3<f32>, opacity: f32) -> vec3<f32>
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{
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let blended = vec3<f32>(
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overlay(base.r, blend.r),
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overlay(base.g, blend.g),
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overlay(base.b, blend.b)
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);
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return (blended * opacity + base * (1.0 - opacity));
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}
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`,
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main: `
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out = vec4<f32>(blendOverlay(back.rgb, front.rgb, front.a), blendedAlpha) * blendUniforms.uBlend;
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`
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}
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});
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}
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}
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/** @ignore */
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OverlayBlend.extension = {
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name: "overlay",
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type: ExtensionType.BlendMode
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};
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export { OverlayBlend };
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//# sourceMappingURL=OverlayBlend.mjs.map
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