var fragment = "in vec2 vMaskCoord;\nin vec2 vTextureCoord;\n\nuniform sampler2D uTexture;\nuniform sampler2D uMaskTexture;\n\nuniform float uAlpha;\nuniform vec4 uMaskClamp;\nuniform float uInverse;\n\nout vec4 finalColor;\n\nvoid main(void)\n{\n    float clip = step(3.5,\n        step(uMaskClamp.x, vMaskCoord.x) +\n        step(uMaskClamp.y, vMaskCoord.y) +\n        step(vMaskCoord.x, uMaskClamp.z) +\n        step(vMaskCoord.y, uMaskClamp.w));\n\n    // TODO look into why this is needed\n    float npmAlpha = uAlpha;\n    vec4 original = texture(uTexture, vTextureCoord);\n    vec4 masky = texture(uMaskTexture, vMaskCoord);\n    float alphaMul = 1.0 - npmAlpha * (1.0 - masky.a);\n\n    float a = alphaMul * masky.r * npmAlpha * clip;\n\n    if (uInverse == 1.0) {\n        a = 1.0 - a;\n    }\n\n    finalColor = original * a;\n}\n";

export { fragment as default };
//# sourceMappingURL=mask.frag.mjs.map