text: // Copyright (c) 2015 - 2017 Uber Technologies, Inc.
  //
  // Permission is hereby granted, free of charge, to any person obtaining a copy
  // of this software and associated documentation files (the "Software"), to deal
  // in the Software without restriction, including without limitation the rights
  // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  // copies of the Software, and to permit persons to whom the Software is
  // furnished to do so, subject to the following conditions:
  //
  // The above copyright notice and this permission notice shall be included in
  // all copies or substantial portions of the Software.
  //
  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  // THE SOFTWARE.
  
  import {fp64} from 'luma.gl';
  import project from '../project/project';
  import {fp64ify, fp64ifyMatrix4} from '../../utils/fp64';
  import memoize from '../../utils/memoize';
  
  import project64Shader from './project64.glsl';
  
  export default {
    name: 'project64',
    dependencies: [project, fp64],
    vs: project64Shader,
    getUniforms,
    deprecations: [
      {type: 'uniform vec2', old: 'projectionFP64[16]', new: 'project_uViewProjectionMatrixFP64'},
      {type: 'uniform vec2', old: 'projectionScaleFP64', new: 'project64_uScale'}
    ]
  };
  
  // TODO - this module should calculate the 64 bit uniforms
  // It is currently done by project to minimize duplicated work
  
  const DEFAULT_MODULE_OPTIONS = {};
  const getMemoizedUniforms = memoize(calculateUniforms);
  
  function getUniforms(opts = DEFAULT_MODULE_OPTIONS, context = {}) {
    // These two uniforms are generated by the fp32 project module
    const {project_uViewProjectionMatrix, project_uScale} = context;
  
    if (project_uViewProjectionMatrix && project_uScale) {
      // We only need to update fp64 uniforms if fp32 projection is being updated
      return getMemoizedUniforms({project_uViewProjectionMatrix, project_uScale});
    }
    return {};
  }
  
  function calculateUniforms({project_uViewProjectionMatrix, project_uScale}) {
    const glViewProjectionMatrixFP64 = fp64ifyMatrix4(project_uViewProjectionMatrix);
    const scaleFP64 = fp64ify(project_uScale);
  
    return {
      project_uViewProjectionMatrixFP64: glViewProjectionMatrixFP64,
      project64_uViewProjectionMatrix: glViewProjectionMatrixFP64,
      project64_uScale: scaleFP64
    };
  }
  