fabric
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Object model for HTML5 canvas, and SVG-to-canvas parser. Backed by jsdom and node-canvas.
9 lines (7 loc) • 1.12 kB
JavaScript
const fragmentSource = {
average: "\n precision highp float;\n uniform sampler2D uTexture;\n varying vec2 vTexCoord;\n void main() {\n vec4 color = texture2D(uTexture, vTexCoord);\n float average = (color.r + color.b + color.g) / 3.0;\n gl_FragColor = vec4(average, average, average, color.a);\n }\n ",
lightness: "\n precision highp float;\n uniform sampler2D uTexture;\n uniform int uMode;\n varying vec2 vTexCoord;\n void main() {\n vec4 col = texture2D(uTexture, vTexCoord);\n float average = (max(max(col.r, col.g),col.b) + min(min(col.r, col.g),col.b)) / 2.0;\n gl_FragColor = vec4(average, average, average, col.a);\n }\n ",
luminosity: "\n precision highp float;\n uniform sampler2D uTexture;\n uniform int uMode;\n varying vec2 vTexCoord;\n void main() {\n vec4 col = texture2D(uTexture, vTexCoord);\n float average = 0.21 * col.r + 0.72 * col.g + 0.07 * col.b;\n gl_FragColor = vec4(average, average, average, col.a);\n }\n "
};
export { fragmentSource };
//# sourceMappingURL=grayscale.mjs.map