refactor(frontend): 既存のGLSLを単独のファイルに移行 (#16677)

* refactor(frontend): 既存のGLSLを単独のファイルに移行

* fix: glslファイルを参照元ファイルと同じ場所に移動

6 files changed, 194 insertions, 172 deletions

diff --git a/packages/frontend/src/components/MkAnimBg.fragment.glsl b/packages/frontend/src/components/MkAnimBg.fragment.glsl
new file mode 100644
index 0000000000..d40872bb7a
--- /dev/null
+++ b/packages/frontend/src/components/MkAnimBg.fragment.glsl
@@ -0,0 +1,111 @@
+#version 300 es
+precision mediump float;
+
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+vec3 mod289(vec3 x) {
+	return x - floor(x * (1.0 / 289.0)) * 289.0;
+}
+
+vec2 mod289(vec2 x) {
+	return x - floor(x * (1.0 / 289.0)) * 289.0;
+}
+
+vec3 permute(vec3 x) {
+	return mod289(((x*34.0)+1.0)*x);
+}
+
+float snoise(vec2 v) {
+	const vec4 C = vec4(0.211324865405187, 0.366025403784439, -0.577350269189626, 0.024390243902439);
+
+	vec2 i  = floor(v + dot(v, C.yy));
+	vec2 x0 = v - i + dot(i, C.xx);
+
+	vec2 i1;
+	i1 = (x0.x > x0.y) ? vec2(1.0, 0.0) : vec2(0.0, 1.0);
+	vec4 x12 = x0.xyxy + C.xxzz;
+	x12.xy -= i1;
+
+	i = mod289(i);
+	vec3 p = permute(permute(i.y + vec3(0.0, i1.y, 1.0)) + i.x + vec3(0.0, i1.x, 1.0));
+
+	vec3 m = max(0.5 - vec3(dot(x0, x0), dot(x12.xy, x12.xy), dot(x12.zw, x12.zw)), 0.0);
+	m = m*m;
+	m = m*m;
+
+	vec3 x = 2.0 * fract(p * C.www) - 1.0;
+	vec3 h = abs(x) - 0.5;
+	vec3 ox = floor(x + 0.5);
+	vec3 a0 = x - ox;
+
+	m *= 1.79284291400159 - 0.85373472095314 * (a0 * a0 + h * h);
+
+	vec3 g;
+	g.x = a0.x * x0.x + h.x * x0.y;
+	g.yz = a0.yz * x12.xz + h.yz * x12.yw;
+	return 130.0 * dot(m, g);
+}
+
+in vec2 in_uv;
+uniform float u_time;
+uniform vec2 u_resolution;
+uniform float u_spread;
+uniform float u_speed;
+uniform float u_warp;
+uniform float u_focus;
+uniform float u_itensity;
+out vec4 out_color;
+
+float circle(in vec2 _pos, in vec2 _origin, in float _radius) {
+	float SPREAD = 0.7 * u_spread;
+	float SPEED = 0.00055 * u_speed;
+	float WARP = 1.5 * u_warp;
+	float FOCUS = 1.15 * u_focus;
+
+	vec2 dist = _pos - _origin;
+
+	float distortion = snoise(vec2(
+		_pos.x * 1.587 * WARP + u_time * SPEED * 0.5,
+		_pos.y * 1.192 * WARP + u_time * SPEED * 0.3
+	)) * 0.5 + 0.5;
+
+	float feather = 0.01 + SPREAD * pow(distortion, FOCUS);
+
+	return 1.0 - smoothstep(
+		_radius - (_radius * feather),
+		_radius + (_radius * feather),
+		dot( dist, dist ) * 4.0
+	);
+}
+
+void main() {
+	vec3 green = vec3(1.0) - vec3(153.0 / 255.0, 211.0 / 255.0, 221.0 / 255.0);
+	vec3 purple = vec3(1.0) - vec3(195.0 / 255.0, 165.0 / 255.0, 242.0 / 255.0);
+	vec3 orange = vec3(1.0) - vec3(255.0 / 255.0, 156.0 / 255.0, 136.0 / 255.0);
+
+	float ratio = u_resolution.x / u_resolution.y;
+
+	vec2 uv = vec2(in_uv.x, in_uv.y / ratio) * 0.5 + 0.5;
+
+	vec3 color = vec3(0.0);
+
+	float greenMix = snoise(in_uv * 1.31 + u_time * 0.8 * 0.00017) * 0.5 + 0.5;
+	float purpleMix = snoise(in_uv * 1.26 + u_time * 0.8 * -0.0001) * 0.5 + 0.5;
+	float orangeMix = snoise(in_uv * 1.34 + u_time * 0.8 * 0.00015) * 0.5 + 0.5;
+
+	float alphaOne = 0.35 + 0.65 * pow(snoise(vec2(u_time * 0.00012, uv.x)) * 0.5 + 0.5, 1.2);
+	float alphaTwo = 0.35 + 0.65 * pow(snoise(vec2((u_time + 1561.0) * 0.00014, uv.x )) * 0.5 + 0.5, 1.2);
+	float alphaThree = 0.35 + 0.65 * pow(snoise(vec2((u_time + 3917.0) * 0.00013, uv.x )) * 0.5 + 0.5, 1.2);
+
+	color += vec3(circle(uv, vec2(0.22 + sin(u_time * 0.000201) * 0.06, 0.80 + cos(u_time * 0.000151) * 0.06), 0.15)) * alphaOne * (purple * purpleMix + orange * orangeMix);
+	color += vec3(circle(uv, vec2(0.90 + cos(u_time * 0.000166) * 0.06, 0.42 + sin(u_time * 0.000138) * 0.06), 0.18)) * alphaTwo * (green * greenMix + purple * purpleMix);
+	color += vec3(circle(uv, vec2(0.19 + sin(u_time * 0.000112) * 0.06, 0.25 + sin(u_time * 0.000192) * 0.06), 0.09)) * alphaThree * (orange * orangeMix);
+
+	color *= u_itensity + 1.0 * pow(snoise(vec2(in_uv.y + u_time * 0.00013, in_uv.x + u_time * -0.00009)) * 0.5 + 0.5, 2.0);
+
+	vec3 inverted = vec3(1.0) - color;
+	out_color = vec4(color, max(max(color.x, color.y), color.z));
+}
diff --git a/packages/frontend/src/components/MkAnimBg.vertex.glsl b/packages/frontend/src/components/MkAnimBg.vertex.glsl
new file mode 100644
index 0000000000..56d6b017b1
--- /dev/null
+++ b/packages/frontend/src/components/MkAnimBg.vertex.glsl
@@ -0,0 +1,15 @@
+#version 300 es
+
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+in vec2 position;
+uniform vec2 u_scale;
+out vec2 in_uv;
+
+void main() {
+	gl_Position = vec4(position, 0.0, 1.0);
+	in_uv = position / u_scale;
+}
diff --git a/packages/frontend/src/components/MkAnimBg.vue b/packages/frontend/src/components/MkAnimBg.vue
index 0e1018dcbf..bcdc604bb8 100644
--- a/packages/frontend/src/components/MkAnimBg.vue
+++ b/packages/frontend/src/components/MkAnimBg.vue
@@ -10,6 +10,8 @@ SPDX-License-Identifier: AGPL-3.0-only
 <script lang="ts" setup>
 import { onMounted, onUnmounted, useTemplateRef } from 'vue';
 import isChromatic from 'chromatic/isChromatic';
+import vertexShaderSource from './MkAnimBg.vertex.glsl';
+import fragmentShaderSource from './MkAnimBg.fragment.glsl';
 import { initShaderProgram } from '@/utility/webgl.js';
 
 const canvasEl = useTemplateRef('canvasEl');
@@ -42,126 +44,7 @@ onMounted(() => {
 	const positionBuffer = gl.createBuffer();
 	gl.bindBuffer(gl.ARRAY_BUFFER, positionBuffer);
 
-	const shaderProgram = initShaderProgram(gl, `#version 300 es
-		in vec2 position;
-		uniform vec2 u_scale;
-		out vec2 in_uv;
-
-		void main() {
-			gl_Position = vec4(position, 0.0, 1.0);
-			in_uv = position / u_scale;
-		}
-	`, `#version 300 es
-		precision mediump float;
-
-		vec3 mod289(vec3 x) {
-			return x - floor(x * (1.0 / 289.0)) * 289.0;
-		}
-
-		vec2 mod289(vec2 x) {
-			return x - floor(x * (1.0 / 289.0)) * 289.0;
-		}
-
-		vec3 permute(vec3 x) {
-			return mod289(((x*34.0)+1.0)*x);
-		}
-
-		float snoise(vec2 v) {
-			const vec4 C = vec4(0.211324865405187,
-													0.366025403784439,
-												-0.577350269189626,
-													0.024390243902439);
-
-			vec2 i  = floor(v + dot(v, C.yy) );
-			vec2 x0 = v -   i + dot(i, C.xx);
-
-			vec2 i1;
-			i1 = (x0.x > x0.y) ? vec2(1.0, 0.0) : vec2(0.0, 1.0);
-			vec4 x12 = x0.xyxy + C.xxzz;
-			x12.xy -= i1;
-
-			i = mod289(i);
-			vec3 p = permute( permute( i.y + vec3(0.0, i1.y, 1.0 ))
-				+ i.x + vec3(0.0, i1.x, 1.0 ));
-
-			vec3 m = max(0.5 - vec3(dot(x0,x0), dot(x12.xy,x12.xy), dot(x12.zw,x12.zw)), 0.0);
-			m = m*m ;
-			m = m*m ;
-
-			vec3 x = 2.0 * fract(p * C.www) - 1.0;
-			vec3 h = abs(x) - 0.5;
-			vec3 ox = floor(x + 0.5);
-			vec3 a0 = x - ox;
-
-			m *= 1.79284291400159 - 0.85373472095314 * ( a0*a0 + h*h );
-
-			vec3 g;
-			g.x  = a0.x  * x0.x  + h.x  * x0.y;
-			g.yz = a0.yz * x12.xz + h.yz * x12.yw;
-			return 130.0 * dot(m, g);
-		}
-
-		in vec2 in_uv;
-		uniform float u_time;
-		uniform vec2 u_resolution;
-		uniform float u_spread;
-		uniform float u_speed;
-		uniform float u_warp;
-		uniform float u_focus;
-		uniform float u_itensity;
-		out vec4 out_color;
-
-		float circle( in vec2 _pos, in vec2 _origin, in float _radius ) {
-			float SPREAD = 0.7 * u_spread;
-			float SPEED = 0.00055 * u_speed;
-			float WARP = 1.5 * u_warp;
-			float FOCUS = 1.15 * u_focus;
-
-			vec2 dist = _pos - _origin;
-
-			float distortion = snoise( vec2(
-				_pos.x * 1.587 * WARP + u_time * SPEED * 0.5,
-				_pos.y * 1.192 * WARP + u_time * SPEED * 0.3
-			) ) * 0.5 + 0.5;
-
-			float feather = 0.01 + SPREAD * pow( distortion, FOCUS );
-
-			return 1.0 - smoothstep(
-				_radius - ( _radius * feather ),
-				_radius + ( _radius * feather ),
-				dot( dist, dist ) * 4.0
-			);
-		}
-
-		void main() {
-			vec3 green = vec3( 1.0 ) - vec3( 153.0 / 255.0, 211.0 / 255.0, 221.0 / 255.0 );
-			vec3 purple = vec3( 1.0 ) - vec3( 195.0 / 255.0, 165.0 / 255.0, 242.0 / 255.0 );
-			vec3 orange = vec3( 1.0 ) - vec3( 255.0 / 255.0, 156.0 / 255.0, 136.0 / 255.0 );
-
-			float ratio = u_resolution.x / u_resolution.y;
-
-			vec2 uv = vec2( in_uv.x, in_uv.y / ratio ) * 0.5 + 0.5;
-
-			vec3 color = vec3( 0.0 );
-
-			float greenMix = snoise( in_uv * 1.31 + u_time * 0.8 * 0.00017 ) * 0.5 + 0.5;
-			float purpleMix = snoise( in_uv * 1.26 + u_time * 0.8 * -0.0001 ) * 0.5 + 0.5;
-			float orangeMix = snoise( in_uv * 1.34 + u_time * 0.8 * 0.00015 ) * 0.5 + 0.5;
-
-			float alphaOne = 0.35 + 0.65 * pow( snoise( vec2( u_time * 0.00012, uv.x ) ) * 0.5 + 0.5, 1.2 );
-			float alphaTwo = 0.35 + 0.65 * pow( snoise( vec2( ( u_time + 1561.0 ) * 0.00014, uv.x ) ) * 0.5 + 0.5, 1.2 );
-			float alphaThree = 0.35 + 0.65 * pow( snoise( vec2( ( u_time + 3917.0 ) * 0.00013, uv.x ) ) * 0.5 + 0.5, 1.2 );
-
-			color += vec3( circle( uv, vec2( 0.22 + sin( u_time * 0.000201 ) * 0.06, 0.80 + cos( u_time * 0.000151 ) * 0.06 ), 0.15 ) ) * alphaOne * ( purple * purpleMix + orange * orangeMix );
-			color += vec3( circle( uv, vec2( 0.90 + cos( u_time * 0.000166 ) * 0.06, 0.42 + sin( u_time * 0.000138 ) * 0.06 ), 0.18 ) ) * alphaTwo * ( green * greenMix + purple * purpleMix );
-			color += vec3( circle( uv, vec2( 0.19 + sin( u_time * 0.000112 ) * 0.06, 0.25 + sin( u_time * 0.000192 ) * 0.06 ), 0.09 ) ) * alphaThree * ( orange * orangeMix );
-
-			color *= u_itensity + 1.0 * pow( snoise( vec2( in_uv.y + u_time * 0.00013, in_uv.x + u_time * -0.00009 ) ) * 0.5 + 0.5, 2.0 );
-
-			vec3 inverted = vec3( 1.0 ) - color;
-			out_color = vec4(color, max(max(color.x, color.y), color.z));
-		}
-	`);
+	const shaderProgram = initShaderProgram(gl, vertexShaderSource, fragmentShaderSource);
 	if (shaderProgram == null) return;
 
 	gl.useProgram(shaderProgram);
diff --git a/packages/frontend/src/utility/snowfall-effect.fragment.glsl b/packages/frontend/src/utility/snowfall-effect.fragment.glsl
new file mode 100644
index 0000000000..560af039e8
--- /dev/null
+++ b/packages/frontend/src/utility/snowfall-effect.fragment.glsl
@@ -0,0 +1,23 @@
+#version 300 es
+precision mediump float;
+
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+in vec4 v_color;
+in float v_rotation;
+uniform sampler2D u_texture;
+out vec4 out_color;
+
+void main() {
+	vec2 rotated = vec2(
+		cos(v_rotation) * (gl_PointCoord.x - 0.5) + sin(v_rotation) * (gl_PointCoord.y - 0.5) + 0.5,
+		cos(v_rotation) * (gl_PointCoord.y - 0.5) - sin(v_rotation) * (gl_PointCoord.x - 0.5) + 0.5
+	);
+
+	vec4 snowflake = texture(u_texture, rotated);
+
+	out_color = vec4(snowflake.rgb * v_color.xyz, snowflake.a * v_color.a);
+}
diff --git a/packages/frontend/src/utility/snowfall-effect.ts b/packages/frontend/src/utility/snowfall-effect.ts
index 65398e6a43..cefa720ebf 100644
--- a/packages/frontend/src/utility/snowfall-effect.ts
+++ b/packages/frontend/src/utility/snowfall-effect.ts
@@ -3,59 +3,12 @@
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 
-export class SnowfallEffect {
-	private VERTEX_SOURCE = `#version 300 es
-		in vec4 a_position;
-		in vec4 a_color;
-		in vec3 a_rotation;
-		in vec3 a_speed;
-		in float a_size;
-		out vec4 v_color;
-		out float v_rotation;
-		uniform float u_time;
-		uniform mat4 u_projection;
-		uniform vec3 u_worldSize;
-		uniform float u_gravity;
-		uniform float u_wind;
-		uniform float u_spin_factor;
-		uniform float u_turbulence;
-
-		void main() {
-			v_color = a_color;
-			v_rotation = a_rotation.x + (u_time * u_spin_factor) * a_rotation.y;
-
-			vec3 pos = a_position.xyz;
-
-			pos.x = mod(pos.x + u_time + u_wind * a_speed.x, u_worldSize.x * 2.0) - u_worldSize.x;
-			pos.y = mod(pos.y - u_time * a_speed.y * u_gravity, u_worldSize.y * 2.0) - u_worldSize.y;
-
-			pos.x += sin(u_time * a_speed.z * u_turbulence) * a_rotation.z;
-			pos.z += cos(u_time * a_speed.z * u_turbulence) * a_rotation.z;
-
-			gl_Position = u_projection * vec4(pos.xyz, a_position.w);
-			gl_PointSize = (a_size / gl_Position.w) * 100.0;
-		}
-	`;
+import vertexSource from './snowfall-effect.vertex.glsl';
+import fragmentSource from './snowfall-effect.fragment.glsl';
 
-	private FRAGMENT_SOURCE = `#version 300 es
-		precision mediump float;
-
-		in vec4 v_color;
-		in float v_rotation;
-		uniform sampler2D u_texture;
-		out vec4 out_color;
-
-		void main() {
-			vec2 rotated = vec2(
-				cos(v_rotation) * (gl_PointCoord.x - 0.5) + sin(v_rotation) * (gl_PointCoord.y - 0.5) + 0.5,
-				cos(v_rotation) * (gl_PointCoord.y - 0.5) - sin(v_rotation) * (gl_PointCoord.x - 0.5) + 0.5
-			);
-
-			vec4 snowflake = texture(u_texture, rotated);
-
-			out_color = vec4(snowflake.rgb * v_color.xyz, snowflake.a * v_color.a);
-		}
-	`;
+export class SnowfallEffect {
+	private VERTEX_SOURCE = vertexSource;
+	private FRAGMENT_SOURCE = fragmentSource;
 
 	private gl: WebGLRenderingContext;
 	private program: WebGLProgram;
diff --git a/packages/frontend/src/utility/snowfall-effect.vertex.glsl b/packages/frontend/src/utility/snowfall-effect.vertex.glsl
new file mode 100644
index 0000000000..bfca1a76ee
--- /dev/null
+++ b/packages/frontend/src/utility/snowfall-effect.vertex.glsl
@@ -0,0 +1,37 @@
+#version 300 es
+
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+in vec4 a_position;
+in vec4 a_color;
+in vec3 a_rotation;
+in vec3 a_speed;
+in float a_size;
+out vec4 v_color;
+out float v_rotation;
+uniform float u_time;
+uniform mat4 u_projection;
+uniform vec3 u_worldSize;
+uniform float u_gravity;
+uniform float u_wind;
+uniform float u_spin_factor;
+uniform float u_turbulence;
+
+void main() {
+	v_color = a_color;
+	v_rotation = a_rotation.x + (u_time * u_spin_factor) * a_rotation.y;
+
+	vec3 pos = a_position.xyz;
+
+	pos.x = mod(pos.x + u_time + u_wind * a_speed.x, u_worldSize.x * 2.0) - u_worldSize.x;
+	pos.y = mod(pos.y - u_time * a_speed.y * u_gravity, u_worldSize.y * 2.0) - u_worldSize.y;
+
+	pos.x += sin(u_time * a_speed.z * u_turbulence) * a_rotation.z;
+	pos.z += cos(u_time * a_speed.z * u_turbulence) * a_rotation.z;
+
+	gl_Position = u_projection * vec4(pos.xyz, a_position.w);
+	gl_PointSize = (a_size / gl_Position.w) * 100.0;
+}