enhance(frontend/image-effector): add blockNoise fx

3 files changed, 122 insertions, 0 deletions

diff --git a/packages/frontend/src/utility/image-effector/fxs.ts b/packages/frontend/src/utility/image-effector/fxs.ts
index a5c8e2ff80..003b56efc4 100644
--- a/packages/frontend/src/utility/image-effector/fxs.ts
+++ b/packages/frontend/src/utility/image-effector/fxs.ts
@@ -18,6 +18,7 @@ import { FX_stripe } from './fxs/stripe.js';
 import { FX_threshold } from './fxs/threshold.js';
 import { FX_watermarkPlacement } from './fxs/watermarkPlacement.js';
 import { FX_zoomLines } from './fxs/zoomLines.js';
+import { FX_blockNoise } from './fxs/blockNoise.js';
 import type { ImageEffectorFx } from './ImageEffector.js';
 
 export const FXS = [
@@ -36,4 +37,5 @@ export const FXS = [
 	FX_stripe,
 	FX_polkadot,
 	FX_checker,
+	FX_blockNoise,
 ] as const satisfies ImageEffectorFx<string, any>[];
diff --git a/packages/frontend/src/utility/image-effector/fxs/blockNoise.ts b/packages/frontend/src/utility/image-effector/fxs/blockNoise.ts
new file mode 100644
index 0000000000..66ebbabc0c
--- /dev/null
+++ b/packages/frontend/src/utility/image-effector/fxs/blockNoise.ts
@@ -0,0 +1,119 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import seedrandom from 'seedrandom';
+import { defineImageEffectorFx } from '../ImageEffector.js';
+import { i18n } from '@/i18n.js';
+
+const shader = `#version 300 es
+precision mediump float;
+
+in vec2 in_uv;
+uniform sampler2D in_texture;
+uniform vec2 in_resolution;
+uniform int u_amount;
+uniform float u_shiftStrengths[128];
+uniform vec2 u_shiftOrigins[128];
+uniform vec2 u_shiftSizes[128];
+uniform float u_channelShift;
+out vec4 out_color;
+
+void main() {
+	// TODO: ピクセル毎に計算する必要はないのでuniformにする
+	float aspect_ratio = min(in_resolution.x, in_resolution.y) / max(in_resolution.x, in_resolution.y);
+	float aspect_ratio_x = in_resolution.x > in_resolution.y ? 1.0 : aspect_ratio;
+	float aspect_ratio_y = in_resolution.x < in_resolution.y ? 1.0 : aspect_ratio;
+
+	float v = 0.0;
+
+	for (int i = 0; i < u_amount; i++) {
+		if (
+			in_uv.x * aspect_ratio_x > ((u_shiftOrigins[i].x * aspect_ratio_x) - u_shiftSizes[i].x) &&
+			in_uv.x * aspect_ratio_x < ((u_shiftOrigins[i].x * aspect_ratio_x) + u_shiftSizes[i].x) &&
+			in_uv.y * aspect_ratio_y > ((u_shiftOrigins[i].y * aspect_ratio_y) - u_shiftSizes[i].y) &&
+			in_uv.y * aspect_ratio_y < ((u_shiftOrigins[i].y * aspect_ratio_y) + u_shiftSizes[i].y)
+		) {
+			v += u_shiftStrengths[i];
+		}
+	}
+
+	float r = texture(in_texture, vec2(in_uv.x + (v * (1.0 + u_channelShift)), in_uv.y)).r;
+	float g = texture(in_texture, vec2(in_uv.x + v, in_uv.y)).g;
+	float b = texture(in_texture, vec2(in_uv.x + (v * (1.0 + (u_channelShift / 2.0))), in_uv.y)).b;
+	float a = texture(in_texture, vec2(in_uv.x + v, in_uv.y)).a;
+	out_color = vec4(r, g, b, a);
+}
+`;
+
+export const FX_blockNoise = defineImageEffectorFx({
+	id: 'blockNoise' as const,
+	name: i18n.ts._imageEffector._fxs.blockNoise,
+	shader,
+	uniforms: ['amount', 'channelShift'] as const,
+	params: {
+		amount: {
+			type: 'number' as const,
+			default: 50,
+			min: 1,
+			max: 100,
+			step: 1,
+		},
+		strength: {
+			type: 'number' as const,
+			default: 0.05,
+			min: -1,
+			max: 1,
+			step: 0.01,
+			toViewValue: v => Math.round(v * 100) + '%',
+		},
+		width: {
+			type: 'number' as const,
+			default: 0.05,
+			min: 0.01,
+			max: 1,
+			step: 0.01,
+			toViewValue: v => Math.round(v * 100) + '%',
+		},
+		height: {
+			type: 'number' as const,
+			default: 0.01,
+			min: 0.01,
+			max: 1,
+			step: 0.01,
+			toViewValue: v => Math.round(v * 100) + '%',
+		},
+		channelShift: {
+			type: 'number' as const,
+			default: 0,
+			min: 0,
+			max: 10,
+			step: 0.01,
+			toViewValue: v => Math.round(v * 100) + '%',
+		},
+		seed: {
+			type: 'seed' as const,
+			default: 100,
+		},
+	},
+	main: ({ gl, program, u, params }) => {
+		gl.uniform1i(u.amount, params.amount);
+		gl.uniform1f(u.channelShift, params.channelShift);
+
+		const margin = 0;
+
+		const rnd = seedrandom(params.seed.toString());
+
+		for (let i = 0; i < params.amount; i++) {
+			const o = gl.getUniformLocation(program, `u_shiftOrigins[${i.toString()}]`);
+			gl.uniform2f(o, (rnd() * (1 + (margin * 2))) - margin, (rnd() * (1 + (margin * 2))) - margin);
+
+			const s = gl.getUniformLocation(program, `u_shiftStrengths[${i.toString()}]`);
+			gl.uniform1f(s, (1 - (rnd() * 2)) * params.strength);
+
+			const sizes = gl.getUniformLocation(program, `u_shiftSizes[${i.toString()}]`);
+			gl.uniform2f(sizes, params.width, params.height);
+		}
+	},
+});
diff --git a/packages/frontend/src/utility/image-effector/fxs/glitch.ts b/packages/frontend/src/utility/image-effector/fxs/glitch.ts
index e4939a4302..94027e0e31 100644
--- a/packages/frontend/src/utility/image-effector/fxs/glitch.ts
+++ b/packages/frontend/src/utility/image-effector/fxs/glitch.ts
@@ -70,6 +70,7 @@ export const FX_glitch = defineImageEffectorFx({
 			min: 0,
 			max: 10,
 			step: 0.01,
+			toViewValue: v => Math.round(v * 100) + '%',
 		},
 		seed: {
 			type: 'seed' as const,