phaser/src/renderer/webgl/shaders/OutInverseRotation-glsl.js

A fast, free and fun HTML5 Game Framework for Desktop and Mobile web browsers from the team at Phaser Studio Inc.

module.exports = [
    'float inverseRotation = -rotation - uCamera.z;',
    'float irSine = sin(inverseRotation);',
    'float irCosine = cos(inverseRotation);',
    'outInverseRotationMatrix = mat3(',
    '    irCosine, irSine, 0.0,',
    '    -irSine, irCosine, 0.0,',
    '    0.0, 0.0, 1.0',
    ');',
].join('\n');