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/*
* SPDX-FileCopyrightText: syuilo and misskey-project
* SPDX-License-Identifier: AGPL-3.0-only
*/
import { defineImageEffectorFx } from '../ImageEffector.js';
import { i18n } from '@/i18n.js';
const shader = `#version 300 es
precision mediump float;
const float PI = 3.141592653589793;
const float TWO_PI = 6.283185307179586;
const float HALF_PI = 1.5707963267948966;
in vec2 in_uv;
uniform sampler2D in_texture;
uniform vec2 in_resolution;
uniform float u_angle;
uniform float u_scale;
uniform vec3 u_color;
uniform float u_opacity;
out vec4 out_color;
void main() {
vec4 in_color = texture(in_texture, in_uv);
float x_ratio = max(in_resolution.x / in_resolution.y, 1.0);
float y_ratio = max(in_resolution.y / in_resolution.x, 1.0);
float angle = -(u_angle * PI);
vec2 centeredUv = (in_uv - vec2(0.5, 0.5)) * vec2(x_ratio, y_ratio);
vec2 rotatedUV = vec2(
centeredUv.x * cos(angle) - centeredUv.y * sin(angle),
centeredUv.x * sin(angle) + centeredUv.y * cos(angle)
);
float fmodResult = mod(floor(u_scale * rotatedUV.x) + floor(u_scale * rotatedUV.y), 2.0);
float fin = max(sign(fmodResult), 0.0);
out_color = vec4(
mix(in_color.r, u_color.r, fin * u_opacity),
mix(in_color.g, u_color.g, fin * u_opacity),
mix(in_color.b, u_color.b, fin * u_opacity),
in_color.a
);
}
`;
export const FX_checker = defineImageEffectorFx({
id: 'checker' as const,
name: i18n.ts._imageEffector._fxs.checker,
shader,
uniforms: ['angle', 'scale', 'color', 'opacity'] as const,
params: {
angle: {
type: 'number' as const,
default: 0,
min: -1.0,
max: 1.0,
step: 0.01,
toViewValue: v => Math.round(v * 90) + '°',
},
scale: {
type: 'number' as const,
default: 3.0,
min: 1.0,
max: 10.0,
step: 0.1,
},
color: {
type: 'color' as const,
default: [1, 1, 1],
},
opacity: {
type: 'number' as const,
default: 0.5,
min: 0.0,
max: 1.0,
step: 0.01,
toViewValue: v => Math.round(v * 100) + '%',
},
},
main: ({ gl, u, params }) => {
gl.uniform1f(u.angle, params.angle / 2);
gl.uniform1f(u.scale, params.scale * params.scale);
gl.uniform3f(u.color, params.color[0], params.color[1], params.color[2]);
gl.uniform1f(u.opacity, params.opacity);
},
});
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