lib/ui/fixtures/shaders/supported_glsl_op_shaders/30_log2.frag

#version 320 es

// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

precision highp float;

layout(location = 0) out vec4 fragColor;

layout(location = 0) uniform float a;

void main() {
    fragColor = vec4(
        // 2.0^0.0 = 1.0
        log2(a),
        // 2.0^1.0 = 2.0
        log2(a * 2.0),
        0.0,
        1.0
    );
}