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| 1 | +/* eslint-disable camelcase */ |
| 2 | +/* eslint-disable underscore/prefer-constant */ |
| 3 | + |
| 4 | +var $ = require('jquery'); |
| 5 | +var vgl = require('vgl'); |
| 6 | +var vglRenderer = require('../gl/vglRenderer'); |
| 7 | + |
| 8 | +var _renderWindow, _supported; |
| 9 | + |
| 10 | +module.exports = {}; |
| 11 | + |
| 12 | +/** |
| 13 | + * Replace vgl.renderer with a mocked version for testing in a non-webGL state. |
| 14 | + * Use restoreVGLRenderer to unmock. Call vgl.mockCounts() to get the number |
| 15 | + * of times different webGL functions have been called. |
| 16 | + * |
| 17 | + * @param {boolean} [supported=true] If false, then the vgl renderer will |
| 18 | + * indicate that this is an unsupported browser environment. |
| 19 | + */ |
| 20 | +module.exports.mockVGLRenderer = function mockVGLRenderer(supported) { |
| 21 | + 'use strict'; |
| 22 | + var vgl = require('vgl'); |
| 23 | + |
| 24 | + if (supported === undefined) { |
| 25 | + supported = true; |
| 26 | + } |
| 27 | + |
| 28 | + if (vgl._mocked) { |
| 29 | + throw new Error('VGL renderer already mocked'); |
| 30 | + } |
| 31 | + |
| 32 | + var mockCounts = {}; |
| 33 | + var count = function (name) { |
| 34 | + mockCounts[name] = (mockCounts[name] || 0) + 1; |
| 35 | + }; |
| 36 | + var noop = function (name) { |
| 37 | + return function () { |
| 38 | + count(name); |
| 39 | + }; |
| 40 | + }; |
| 41 | + var _id = 0, |
| 42 | + incID = function (name) { |
| 43 | + return function () { |
| 44 | + count(name); |
| 45 | + _id += 1; |
| 46 | + return _id; |
| 47 | + }; |
| 48 | + }; |
| 49 | + /* The context largely does nothing. */ |
| 50 | + var default_context = { |
| 51 | + activeTexture: noop('activeTexture'), |
| 52 | + attachShader: noop('attachShader'), |
| 53 | + bindAttribLocation: noop('bindAttribLocation'), |
| 54 | + bindBuffer: noop('bindBuffer'), |
| 55 | + bindFramebuffer: noop('bindFramebuffer'), |
| 56 | + bindTexture: noop('bindTexture'), |
| 57 | + blendFuncSeparate: noop('blendFuncSeparate'), |
| 58 | + bufferData: noop('bufferData'), |
| 59 | + bufferSubData: noop('bufferSubData'), |
| 60 | + checkFramebufferStatus: function (key) { |
| 61 | + count('checkFramebufferStatus'); |
| 62 | + if (key === vgl.GL.FRAMEBUFFER) { |
| 63 | + return vgl.GL.FRAMEBUFFER_COMPLETE; |
| 64 | + } |
| 65 | + }, |
| 66 | + clear: noop('clear'), |
| 67 | + clearColor: noop('clearColor'), |
| 68 | + clearDepth: noop('clearDepth'), |
| 69 | + compileShader: noop('compileShader'), |
| 70 | + createBuffer: incID('createBuffer'), |
| 71 | + createFramebuffer: noop('createFramebuffer'), |
| 72 | + createProgram: incID('createProgram'), |
| 73 | + createShader: incID('createShader'), |
| 74 | + createTexture: incID('createTexture'), |
| 75 | + deleteBuffer: noop('deleteBuffer'), |
| 76 | + deleteProgram: noop('deleteProgram'), |
| 77 | + deleteShader: noop('deleteShader'), |
| 78 | + deleteTexture: noop('deleteTexture'), |
| 79 | + depthFunc: noop('depthFunc'), |
| 80 | + disable: noop('disable'), |
| 81 | + disableVertexAttribArray: noop('disableVertexAttribArray'), |
| 82 | + drawArrays: noop('drawArrays'), |
| 83 | + enable: noop('enable'), |
| 84 | + enableVertexAttribArray: noop('enableVertexAttribArray'), |
| 85 | + finish: noop('finish'), |
| 86 | + getExtension: incID('getExtension'), |
| 87 | + getParameter: function (key) { |
| 88 | + count('getParameter'); |
| 89 | + if (key === vgl.GL.DEPTH_BITS) { |
| 90 | + return 16; |
| 91 | + } |
| 92 | + }, |
| 93 | + getProgramParameter: function (id, key) { |
| 94 | + count('getProgramParameter'); |
| 95 | + if (key === vgl.GL.LINK_STATUS) { |
| 96 | + return true; |
| 97 | + } |
| 98 | + }, |
| 99 | + getShaderInfoLog: function () { |
| 100 | + count('getShaderInfoLog'); |
| 101 | + return 'log'; |
| 102 | + }, |
| 103 | + getShaderParameter: function (id, key) { |
| 104 | + count('getShaderParameter'); |
| 105 | + if (key === vgl.GL.COMPILE_STATUS) { |
| 106 | + return true; |
| 107 | + } |
| 108 | + }, |
| 109 | + getUniformLocation: incID('getUniformLocation'), |
| 110 | + isEnabled: function (key) { |
| 111 | + count('isEnabled'); |
| 112 | + if (key === vgl.GL.BLEND) { |
| 113 | + return true; |
| 114 | + } |
| 115 | + }, |
| 116 | + linkProgram: noop('linkProgram'), |
| 117 | + pixelStorei: noop('pixelStorei'), |
| 118 | + shaderSource: noop('shaderSource'), |
| 119 | + texImage2D: noop('texImage2D'), |
| 120 | + texParameteri: noop('texParameteri'), |
| 121 | + uniform1iv: noop('uniform1iv'), |
| 122 | + uniform1fv: noop('uniform1fv'), |
| 123 | + uniform2fv: noop('uniform2fv'), |
| 124 | + uniform3fv: noop('uniform3fv'), |
| 125 | + uniform4fv: noop('uniform4fv'), |
| 126 | + uniformMatrix3fv: noop('uniformMatrix3fv'), |
| 127 | + uniformMatrix4fv: noop('uniformMatrix4fv'), |
| 128 | + useProgram: noop('useProgram'), |
| 129 | + vertexAttribPointer: noop('vertexAttribPointer'), |
| 130 | + vertexAttrib3fv: noop('vertexAttrib3fv'), |
| 131 | + viewport: noop('viewport') |
| 132 | + }; |
| 133 | + |
| 134 | + _renderWindow = vgl.renderWindow; |
| 135 | + var mockedRenderWindow = function () { |
| 136 | + /* Temporarily put back the original definition of renderWindow so that the |
| 137 | + * class instance will be instantiated correctly. */ |
| 138 | + vgl.renderWindow = _renderWindow; |
| 139 | + var m_this = new vgl.renderWindow(), |
| 140 | + m_context; |
| 141 | + vgl.renderWindow = mockedRenderWindow; |
| 142 | + |
| 143 | + m_this._setup = function () { |
| 144 | + var i, renderers = m_this.renderers(), |
| 145 | + wsize = m_this.windowSize(), |
| 146 | + wpos = m_this.windowPosition(); |
| 147 | + |
| 148 | + m_context = $.extend({}, default_context); |
| 149 | + |
| 150 | + for (i = 0; i < renderers.length; i += 1) { |
| 151 | + if ((renderers[i].width() > wsize[0]) || |
| 152 | + renderers[i].width() === 0 || |
| 153 | + (renderers[i].height() > wsize[1]) || |
| 154 | + renderers[i].height() === 0) { |
| 155 | + renderers[i].resize(wpos[0], wpos[1], wsize[0], wsize[1]); |
| 156 | + } |
| 157 | + } |
| 158 | + return true; |
| 159 | + }; |
| 160 | + m_this.context = function () { |
| 161 | + return m_context; |
| 162 | + }; |
| 163 | + return m_this; |
| 164 | + }; |
| 165 | + vgl.renderWindow = mockedRenderWindow; |
| 166 | + |
| 167 | + _supported = vglRenderer.supported; |
| 168 | + vglRenderer.supported = function () { |
| 169 | + return !!supported; |
| 170 | + }; |
| 171 | + |
| 172 | + vgl._mocked = true; |
| 173 | + vgl.mockCounts = function () { |
| 174 | + return mockCounts; |
| 175 | + }; |
| 176 | +}; |
| 177 | + |
| 178 | +/** |
| 179 | + * Unmock the vgl renderer. |
| 180 | + */ |
| 181 | +module.exports.restoreVGLRenderer = function () { |
| 182 | + if (vgl._mocked) { |
| 183 | + vgl.renderWindow = _renderWindow; |
| 184 | + vglRenderer.supported = _supported; |
| 185 | + delete vgl._mocked; |
| 186 | + // delete vgl._mockedRenderWindow; |
| 187 | + delete vgl.mockCounts; |
| 188 | + } |
| 189 | +}; |
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