openlayers

<!doctype html> <html lang="en"> <head> <title>Code coverage report for ol/webgl/context.js</title> <meta charset="utf-8" /> <link rel="stylesheet" href="../../prettify.css" /> <link rel="stylesheet" href="../../base.css" /> <meta name="viewport" content="width=device-width, initial-scale=1"> <style type='text/css'> .coverage-summary .sorter { background-image: url(../../sort-arrow-sprite.png); } </style> </head> <body> <div class='wrapper'> <div class='pad1'> <h1> <a href="../../index.html">all files</a> / <a href="index.html">ol/webgl/</a> context.js </h1> <div class='clearfix'> <div class='fl pad1y space-right2'> 17.76% Statements 27/152 </div> <div class='fl pad1y space-right2'> 0% Branches 0/44 </div> <div class='fl pad1y space-right2'> 0% Functions 0/19 </div> <div class='fl pad1y space-right2'> 17.76% Lines 27/152 </div> </div> </div> <div class='status-line low'></div> <pre><table class="coverage"> <tr><td class="line-count quiet">1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414</td><td class="line-coverage quiet">1×   1× 1× 1× 1× 1× 1× 1× 1×             1×                         1×                                                                                                                                                                       1×                                                                   1×                               1×                                             1×                   1×                 1×                           1×                                                                 1×                                                             1×                           1×               1×                                                           1×                               1×                   1×                                                     1×                                   1×              </td><td class="text"><pre class="prettyprint lang-js">goog.provide('ol.webgl.Context');   goog.require('goog.asserts'); goog.require('goog.events'); goog.require('goog.log'); goog.require('goog.object'); goog.require('ol'); goog.require('ol.array'); goog.require('ol.webgl.Buffer'); goog.require('ol.webgl.WebGLContextEventType');     /** * @typedef {{buf: ol.webgl.Buffer, * buffer: WebGLBuffer}} */ ol.webgl.BufferCacheEntry;       /** * @classdesc * A WebGL context for accessing low-level WebGL capabilities. * * @constructor * @extends {goog.events.EventTarget} * @param {HTMLCanvasElement} canvas Canvas. * @param {WebGLRenderingContext} gl GL. */ ol.webgl.Context = function(canvas, gl) {   /** * @private * @type {HTMLCanvasElement} */ this.canvas_ = canvas;   /** * @private * @type {WebGLRenderingContext} */ this.gl_ = gl;   /** * @private * @type {Object.<number, ol.webgl.BufferCacheEntry>} */ this.bufferCache_ = {};   /** * @private * @type {Object.<number, WebGLShader>} */ this.shaderCache_ = {};   /** * @private * @type {Object.<string, WebGLProgram>} */ this.programCache_ = {};   /** * @private * @type {WebGLProgram} */ this.currentProgram_ = null;   /** * @private * @type {WebGLFramebuffer} */ this.hitDetectionFramebuffer_ = null;   /** * @private * @type {WebGLTexture} */ this.hitDetectionTexture_ = null;   /** * @private * @type {WebGLRenderbuffer} */ this.hitDetectionRenderbuffer_ = null;   /** * @type {boolean} */ this.hasOESElementIndexUint = ol.array.includes( ol.WEBGL_EXTENSIONS, 'OES_element_index_uint');   // use the OES_element_index_uint extension if available if (this.hasOESElementIndexUint) { var ext = gl.getExtension('OES_element_index_uint'); goog.asserts.assert(ext, 'Failed to get extension "OES_element_index_uint"'); }   goog.events.listen(this.canvas_, ol.webgl.WebGLContextEventType.LOST, this.handleWebGLContextLost, false, this); goog.events.listen(this.canvas_, ol.webgl.WebGLContextEventType.RESTORED, this.handleWebGLContextRestored, false, this);   };     /** * Just bind the buffer if it's in the cache. Otherwise create * the WebGL buffer, bind it, populate it, and add an entry to * the cache. * @param {number} target Target. * @param {ol.webgl.Buffer} buf Buffer. */ ol.webgl.Context.prototype.bindBuffer = function(target, buf) { var gl = this.getGL(); var arr = buf.getArray(); var bufferKey = goog.getUid(buf); if (bufferKey in this.bufferCache_) { var bufferCacheEntry = this.bufferCache_[bufferKey]; gl.bindBuffer(target, bufferCacheEntry.buffer); } else { var buffer = gl.createBuffer(); gl.bindBuffer(target, buffer); goog.asserts.assert(target == goog.webgl.ARRAY_BUFFER || target == goog.webgl.ELEMENT_ARRAY_BUFFER, 'target is supposed to be an ARRAY_BUFFER or ELEMENT_ARRAY_BUFFER'); var /** @type {ArrayBufferView} */ arrayBuffer; if (target == goog.webgl.ARRAY_BUFFER) { arrayBuffer = new Float32Array(arr); } else if (target == goog.webgl.ELEMENT_ARRAY_BUFFER) { arrayBuffer = this.hasOESElementIndexUint ? new Uint32Array(arr) : new Uint16Array(arr); } else { goog.asserts.fail(); } gl.bufferData(target, arrayBuffer, buf.getUsage()); this.bufferCache_[bufferKey] = { buf: buf, buffer: buffer }; } };     /** * @param {ol.webgl.Buffer} buf Buffer. */ ol.webgl.Context.prototype.deleteBuffer = function(buf) { var gl = this.getGL(); var bufferKey = goog.getUid(buf); goog.asserts.assert(bufferKey in this.bufferCache_, 'attempted to delete uncached buffer'); var bufferCacheEntry = this.bufferCache_[bufferKey]; if (!gl.isContextLost()) { gl.deleteBuffer(bufferCacheEntry.buffer); } delete this.bufferCache_[bufferKey]; };     /** * @inheritDoc */ ol.webgl.Context.prototype.disposeInternal = function() { var gl = this.getGL(); if (!gl.isContextLost()) { goog.object.forEach(this.bufferCache_, function(bufferCacheEntry) { gl.deleteBuffer(bufferCacheEntry.buffer); }); goog.object.forEach(this.programCache_, function(program) { gl.deleteProgram(program); }); goog.object.forEach(this.shaderCache_, function(shader) { gl.deleteShader(shader); }); // delete objects for hit-detection gl.deleteFramebuffer(this.hitDetectionFramebuffer_); gl.deleteRenderbuffer(this.hitDetectionRenderbuffer_); gl.deleteTexture(this.hitDetectionTexture_); } };     /** * @return {HTMLCanvasElement} Canvas. */ ol.webgl.Context.prototype.getCanvas = function() { return this.canvas_; };     /** * Get the WebGL rendering context * @return {WebGLRenderingContext} The rendering context. * @api */ ol.webgl.Context.prototype.getGL = function() { return this.gl_; };     /** * Get the frame buffer for hit detection. * @return {WebGLFramebuffer} The hit detection frame buffer. */ ol.webgl.Context.prototype.getHitDetectionFramebuffer = function() { if (!this.hitDetectionFramebuffer_) { this.initHitDetectionFramebuffer_(); } return this.hitDetectionFramebuffer_; };     /** * Get shader from the cache if it's in the cache. Otherwise, create * the WebGL shader, compile it, and add entry to cache. * @param {ol.webgl.Shader} shaderObject Shader object. * @return {WebGLShader} Shader. */ ol.webgl.Context.prototype.getShader = function(shaderObject) { var shaderKey = goog.getUid(shaderObject); if (shaderKey in this.shaderCache_) { return this.shaderCache_[shaderKey]; } else { var gl = this.getGL(); var shader = gl.createShader(shaderObject.getType()); gl.shaderSource(shader, shaderObject.getSource()); gl.compileShader(shader); if (goog.DEBUG) { if (!gl.getShaderParameter(shader, goog.webgl.COMPILE_STATUS) && !gl.isContextLost()) { goog.log.error(this.logger_, gl.getShaderInfoLog(shader)); } } goog.asserts.assert( gl.getShaderParameter(shader, goog.webgl.COMPILE_STATUS) || gl.isContextLost(), 'illegal state, shader not compiled or context lost'); this.shaderCache_[shaderKey] = shader; return shader; } };     /** * Get the program from the cache if it's in the cache. Otherwise create * the WebGL program, attach the shaders to it, and add an entry to the * cache. * @param {ol.webgl.shader.Fragment} fragmentShaderObject Fragment shader. * @param {ol.webgl.shader.Vertex} vertexShaderObject Vertex shader. * @return {WebGLProgram} Program. */ ol.webgl.Context.prototype.getProgram = function( fragmentShaderObject, vertexShaderObject) { var programKey = goog.getUid(fragmentShaderObject) + '/' + goog.getUid(vertexShaderObject); if (programKey in this.programCache_) { return this.programCache_[programKey]; } else { var gl = this.getGL(); var program = gl.createProgram(); gl.attachShader(program, this.getShader(fragmentShaderObject)); gl.attachShader(program, this.getShader(vertexShaderObject)); gl.linkProgram(program); if (goog.DEBUG) { if (!gl.getProgramParameter(program, goog.webgl.LINK_STATUS) && !gl.isContextLost()) { goog.log.error(this.logger_, gl.getProgramInfoLog(program)); } } goog.asserts.assert( gl.getProgramParameter(program, goog.webgl.LINK_STATUS) || gl.isContextLost(), 'illegal state, shader not linked or context lost'); this.programCache_[programKey] = program; return program; } };     /** * FIXME empy description for jsdoc */ ol.webgl.Context.prototype.handleWebGLContextLost = function() { goog.object.clear(this.bufferCache_); goog.object.clear(this.shaderCache_); goog.object.clear(this.programCache_); this.currentProgram_ = null; this.hitDetectionFramebuffer_ = null; this.hitDetectionTexture_ = null; this.hitDetectionRenderbuffer_ = null; };     /** * FIXME empy description for jsdoc */ ol.webgl.Context.prototype.handleWebGLContextRestored = function() { };     /** * Creates a 1x1 pixel framebuffer for the hit-detection. * @private */ ol.webgl.Context.prototype.initHitDetectionFramebuffer_ = function() { var gl = this.gl_; var framebuffer = gl.createFramebuffer(); gl.bindFramebuffer(gl.FRAMEBUFFER, framebuffer);   var texture = ol.webgl.Context.createEmptyTexture(gl, 1, 1); var renderbuffer = gl.createRenderbuffer(); gl.bindRenderbuffer(gl.RENDERBUFFER, renderbuffer); gl.renderbufferStorage(gl.RENDERBUFFER, gl.DEPTH_COMPONENT16, 1, 1); gl.framebufferTexture2D( gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, texture, 0); gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.DEPTH_ATTACHMENT, gl.RENDERBUFFER, renderbuffer);   gl.bindTexture(gl.TEXTURE_2D, null); gl.bindRenderbuffer(gl.RENDERBUFFER, null); gl.bindFramebuffer(gl.FRAMEBUFFER, null);   this.hitDetectionFramebuffer_ = framebuffer; this.hitDetectionTexture_ = texture; this.hitDetectionRenderbuffer_ = renderbuffer; };     /** * Use a program. If the program is already in use, this will return `false`. * @param {WebGLProgram} program Program. * @return {boolean} Changed. * @api */ ol.webgl.Context.prototype.useProgram = function(program) { if (program == this.currentProgram_) { return false; } else { var gl = this.getGL(); gl.useProgram(program); this.currentProgram_ = program; return true; } };     /** * @private * @type {goog.log.Logger} */ ol.webgl.Context.prototype.logger_ = goog.log.getLogger('ol.webgl.Context');     /** * @param {WebGLRenderingContext} gl WebGL rendering context. * @param {number=} opt_wrapS wrapS. * @param {number=} opt_wrapT wrapT. * @return {WebGLTexture} * @private */ ol.webgl.Context.createTexture_ = function(gl, opt_wrapS, opt_wrapT) { var texture = gl.createTexture(); gl.bindTexture(gl.TEXTURE_2D, texture); gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR); gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);   if (opt_wrapS !== undefined) { gl.texParameteri( goog.webgl.TEXTURE_2D, goog.webgl.TEXTURE_WRAP_S, opt_wrapS); } if (opt_wrapT !== undefined) { gl.texParameteri( goog.webgl.TEXTURE_2D, goog.webgl.TEXTURE_WRAP_T, opt_wrapT); }   return texture; };     /** * @param {WebGLRenderingContext} gl WebGL rendering context. * @param {number} width Width. * @param {number} height Height. * @param {number=} opt_wrapS wrapS. * @param {number=} opt_wrapT wrapT. * @return {WebGLTexture} */ ol.webgl.Context.createEmptyTexture = function( gl, width, height, opt_wrapS, opt_wrapT) { var texture = ol.webgl.Context.createTexture_(gl, opt_wrapS, opt_wrapT); gl.texImage2D( gl.TEXTURE_2D, 0, gl.RGBA, width, height, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);   return texture; };     /** * @param {WebGLRenderingContext} gl WebGL rendering context. * @param {HTMLCanvasElement|HTMLImageElement|HTMLVideoElement} image Image. * @param {number=} opt_wrapS wrapS. * @param {number=} opt_wrapT wrapT. * @return {WebGLTexture} */ ol.webgl.Context.createTexture = function(gl, image, opt_wrapS, opt_wrapT) { var texture = ol.webgl.Context.createTexture_(gl, opt_wrapS, opt_wrapT); gl.texImage2D( gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, image);   return texture; };  </pre></td></tr> </table></pre> <div class='push'></div> </div> <div class='footer quiet pad2 space-top1 center small'> Code coverage generated by <a href="http://istanbul-js.org/" target="_blank">istanbul</a> at Fri Nov 06 2015 19:36:11 GMT+0100 (CET) </div> </div> <script src="../../prettify.js"></script> <script> window.onload = function () { if (typeof prettyPrint === 'function') { prettyPrint(); } }; </script> <script src="../../sorter.js"></script> </body> </html>