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| 1 <!DOCTYPE html> | |
| 2 <html> | |
| 3 <head> | |
| 4 <meta charset="utf-8"> | |
| 5 <title>WebGL OES_vertex_array_object Conformance Tests</title> | |
| 6 <script src="resources/desktop-gl-constants.js" type="text/javascript"></script> | |
| 7 <script src="../../../resources/js-test.js"></script> | |
| 8 <script src="resources/webgl-test.js"></script> | |
| 9 <script src="resources/webgl-test-utils.js"></script> | |
| 10 </head> | |
| 11 <body> | |
| 12 <div id="description"></div> | |
| 13 <canvas id="canvas" style="width: 50px; height: 50px;"> </canvas> | |
| 14 <div id="console"></div> | |
| 15 <script id="vshader", type="x-shader/x-vertex"> | |
| 16 attribute vec4 a_position; | |
| 17 attribute vec4 a_color; | |
| 18 varying vec4 v_color; | |
| 19 void main(void) { | |
| 20 gl_Position = a_position; | |
| 21 v_color = a_color; | |
| 22 } | |
| 23 </script> | |
| 24 <script id="fshader", type="x-shader/x-fragment"> | |
| 25 precision mediump float; | |
| 26 varying vec4 v_color; | |
| 27 void main(void) { | |
| 28 gl_FragColor = v_color; | |
| 29 } | |
| 30 </script> | |
| 31 <script> | |
| 32 description("This test verifies the functionality of the OES_vertex_array_object
extension, if it is available."); | |
| 33 | |
| 34 debug(""); | |
| 35 | |
| 36 if (window.internals) | |
| 37 window.internals.settings.setWebGLErrorsToConsoleEnabled(false); | |
| 38 | |
| 39 var wtu = WebGLTestUtils; | |
| 40 var canvas = document.getElementById("canvas"); | |
| 41 var gl = create3DContext(canvas); | |
| 42 var ext = null; | |
| 43 var vao = null; | |
| 44 | |
| 45 if (!gl) { | |
| 46 testFailed("WebGL context does not exist"); | |
| 47 } else { | |
| 48 testPassed("WebGL context exists"); | |
| 49 | |
| 50 // Setup emulated OESVertexArrayObject if it has been included. | |
| 51 if (window.setupVertexArrayObject) { | |
| 52 debug("using emuated OES_vertex_array_object"); | |
| 53 setupVertexArrayObject(gl); | |
| 54 } | |
| 55 | |
| 56 // Run tests with extension disabled | |
| 57 runBindingTestDisabled(); | |
| 58 | |
| 59 // Query the extension and store globally so shouldBe can access it | |
| 60 ext = gl.getExtension("OES_vertex_array_object"); | |
| 61 if (!ext) { | |
| 62 testPassed("No OES_vertex_array_object support -- this is legal"); | |
| 63 | |
| 64 runSupportedTest(false); | |
| 65 } else { | |
| 66 testPassed("Successfully enabled OES_vertex_array_object extension"); | |
| 67 | |
| 68 runSupportedTest(true); | |
| 69 runBindingTestEnabled(); | |
| 70 runObjectTest(); | |
| 71 runAttributeTests(); | |
| 72 runAttributeValueTests(); | |
| 73 runDrawTests(); | |
| 74 runDeleteTests(); | |
| 75 runArrayBufferBindTests(); | |
| 76 glErrorShouldBe(gl, gl.NO_ERROR, "there should be no errors"); | |
| 77 } | |
| 78 } | |
| 79 | |
| 80 function runSupportedTest(extensionEnabled) { | |
| 81 var supported = gl.getSupportedExtensions(); | |
| 82 if (supported.indexOf("OES_vertex_array_object") >= 0) { | |
| 83 if (extensionEnabled) { | |
| 84 testPassed("OES_vertex_array_object listed as supported and getExten
sion succeeded"); | |
| 85 } else { | |
| 86 testFailed("OES_vertex_array_object listed as supported but getExten
sion failed"); | |
| 87 } | |
| 88 } else { | |
| 89 if (extensionEnabled) { | |
| 90 testFailed("OES_vertex_array_object not listed as supported but getE
xtension succeeded"); | |
| 91 } else { | |
| 92 testPassed("OES_vertex_array_object not listed as supported and getE
xtension failed -- this is legal"); | |
| 93 } | |
| 94 } | |
| 95 } | |
| 96 | |
| 97 function runBindingTestDisabled() { | |
| 98 debug("Testing binding enum with extension disabled"); | |
| 99 | |
| 100 // Use the constant directly as we don't have the extension | |
| 101 var VERTEX_ARRAY_BINDING_OES = 0x85B5; | |
| 102 | |
| 103 gl.getParameter(VERTEX_ARRAY_BINDING_OES); | |
| 104 glErrorShouldBe(gl, gl.INVALID_ENUM, "VERTEX_ARRAY_BINDING_OES should not be
queryable if extension is disabled"); | |
| 105 } | |
| 106 | |
| 107 function runBindingTestEnabled() { | |
| 108 debug("Testing binding enum with extension enabled"); | |
| 109 | |
| 110 shouldBe("ext.VERTEX_ARRAY_BINDING_OES", "0x85B5"); | |
| 111 | |
| 112 gl.getParameter(ext.VERTEX_ARRAY_BINDING_OES); | |
| 113 glErrorShouldBe(gl, gl.NO_ERROR, "VERTEX_ARRAY_BINDING_OES query should succ
eed if extension is enable"); | |
| 114 | |
| 115 // Default value is null | |
| 116 if (gl.getParameter(ext.VERTEX_ARRAY_BINDING_OES) === null) { | |
| 117 testPassed("Default value of VERTEX_ARRAY_BINDING_OES is null"); | |
| 118 } else { | |
| 119 testFailed("Default value of VERTEX_ARRAY_BINDING_OES is not null"); | |
| 120 } | |
| 121 | |
| 122 debug("Testing binding a VAO"); | |
| 123 var vao0 = ext.createVertexArrayOES(); | |
| 124 var vao1 = ext.createVertexArrayOES(); | |
| 125 shouldBeNull("gl.getParameter(ext.VERTEX_ARRAY_BINDING_OES)"); | |
| 126 ext.bindVertexArrayOES(vao0); | |
| 127 if (gl.getParameter(ext.VERTEX_ARRAY_BINDING_OES) == vao0) { | |
| 128 testPassed("gl.getParameter(ext.VERTEX_ARRAY_BINDING_OES) is expected VA
O"); | |
| 129 } else { | |
| 130 testFailed("gl.getParameter(ext.VERTEX_ARRAY_BINDING_OES) is not expecte
d VAO") | |
| 131 } | |
| 132 ext.bindVertexArrayOES(vao1); | |
| 133 if (gl.getParameter(ext.VERTEX_ARRAY_BINDING_OES) == vao1) { | |
| 134 testPassed("gl.getParameter(ext.VERTEX_ARRAY_BINDING_OES) is expected VA
O"); | |
| 135 } else { | |
| 136 testFailed("gl.getParameter(ext.VERTEX_ARRAY_BINDING_OES) is not expecte
d VAO") | |
| 137 } | |
| 138 ext.deleteVertexArrayOES(vao1); | |
| 139 shouldBeNull("gl.getParameter(ext.VERTEX_ARRAY_BINDING_OES)"); | |
| 140 ext.bindVertexArrayOES(vao1); | |
| 141 glErrorShouldBe(gl, gl.INVALID_OPERATION, "binding a deleted vertex array ob
ject"); | |
| 142 ext.bindVertexArrayOES(null); | |
| 143 shouldBeNull("gl.getParameter(ext.VERTEX_ARRAY_BINDING_OES)"); | |
| 144 ext.deleteVertexArrayOES(vao1); | |
| 145 } | |
| 146 | |
| 147 function runObjectTest() { | |
| 148 debug("Testing object creation"); | |
| 149 | |
| 150 vao = ext.createVertexArrayOES(); | |
| 151 glErrorShouldBe(gl, gl.NO_ERROR, "createVertexArrayOES should not set an err
or"); | |
| 152 shouldBeNonNull("vao"); | |
| 153 | |
| 154 // Expect false if never bound | |
| 155 shouldBeFalse("ext.isVertexArrayOES(vao)"); | |
| 156 ext.bindVertexArrayOES(vao); | |
| 157 shouldBeTrue("ext.isVertexArrayOES(vao)"); | |
| 158 ext.bindVertexArrayOES(null); | |
| 159 shouldBeTrue("ext.isVertexArrayOES(vao)"); | |
| 160 | |
| 161 shouldBeFalse("ext.isVertexArrayOES()"); | |
| 162 shouldBeFalse("ext.isVertexArrayOES(null)"); | |
| 163 | |
| 164 ext.deleteVertexArrayOES(vao); | |
| 165 vao = null; | |
| 166 } | |
| 167 | |
| 168 function runAttributeTests() { | |
| 169 debug("Testing attributes work across bindings"); | |
| 170 | |
| 171 var states = []; | |
| 172 | |
| 173 var attrCount = gl.getParameter(gl.MAX_VERTEX_ATTRIBS); | |
| 174 for (var n = 0; n < attrCount; n++) { | |
| 175 gl.bindBuffer(gl.ARRAY_BUFFER, null); | |
| 176 gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, null); | |
| 177 | |
| 178 var state = {}; | |
| 179 states.push(state); | |
| 180 | |
| 181 var vao = state.vao = ext.createVertexArrayOES(); | |
| 182 ext.bindVertexArrayOES(vao); | |
| 183 | |
| 184 if (n % 2 == 0) { | |
| 185 gl.enableVertexAttribArray(n); | |
| 186 } else { | |
| 187 gl.disableVertexAttribArray(n); | |
| 188 } | |
| 189 | |
| 190 if (n % 2 == 0) { | |
| 191 var buffer = state.buffer = gl.createBuffer(); | |
| 192 gl.bindBuffer(gl.ARRAY_BUFFER, buffer); | |
| 193 gl.bufferData(gl.ARRAY_BUFFER, 1024, gl.STATIC_DRAW); | |
| 194 | |
| 195 gl.vertexAttribPointer(n, 1 + n % 4, gl.FLOAT, true, n * 4, n * 4); | |
| 196 } | |
| 197 | |
| 198 if (n % 2 == 0) { | |
| 199 var elbuffer = state.elbuffer = gl.createBuffer(); | |
| 200 gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, elbuffer); | |
| 201 gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, 1024, gl.STATIC_DRAW); | |
| 202 } | |
| 203 | |
| 204 ext.bindVertexArrayOES(null); | |
| 205 } | |
| 206 | |
| 207 var anyMismatch = false; | |
| 208 for (var n = 0; n < attrCount; n++) { | |
| 209 var state = states[n]; | |
| 210 | |
| 211 ext.bindVertexArrayOES(state.vao); | |
| 212 | |
| 213 var isEnabled = gl.getVertexAttrib(n, gl.VERTEX_ATTRIB_ARRAY_ENABLED); | |
| 214 if ((n % 2 == 1) || isEnabled) { | |
| 215 // Valid | |
| 216 } else { | |
| 217 testFailed("VERTEX_ATTRIB_ARRAY_ENABLED not preserved"); | |
| 218 anyMismatch = true; | |
| 219 } | |
| 220 | |
| 221 var buffer = gl.getVertexAttrib(n, gl.VERTEX_ATTRIB_ARRAY_BUFFER_BINDING
); | |
| 222 if (n % 2 == 0) { | |
| 223 if (buffer == state.buffer) { | |
| 224 // Matched | |
| 225 if ((gl.getVertexAttrib(n, gl.VERTEX_ATTRIB_ARRAY_SIZE) == 1 + n
% 4) && | |
| 226 (gl.getVertexAttrib(n, gl.VERTEX_ATTRIB_ARRAY_TYPE) == gl.FL
OAT) && | |
| 227 (gl.getVertexAttrib(n, gl.VERTEX_ATTRIB_ARRAY_NORMALIZED) ==
true) && | |
| 228 (gl.getVertexAttrib(n, gl.VERTEX_ATTRIB_ARRAY_STRIDE) == n *
4) && | |
| 229 (gl.getVertexAttribOffset(n, gl.VERTEX_ATTRIB_ARRAY_POINTER)
== n * 4)) { | |
| 230 // Matched | |
| 231 } else { | |
| 232 testFailed("VERTEX_ATTRIB_ARRAY_* not preserved"); | |
| 233 anyMismatch = true; | |
| 234 } | |
| 235 } else { | |
| 236 testFailed("VERTEX_ATTRIB_ARRAY_BUFFER_BINDING not preserved"); | |
| 237 anyMismatch = true; | |
| 238 } | |
| 239 } else { | |
| 240 // GL_CURRENT_VERTEX_ATTRIB is not preserved | |
| 241 if (buffer) { | |
| 242 testFailed("VERTEX_ATTRIB_ARRAY_BUFFER_BINDING not preserved"); | |
| 243 anyMismatch = true; | |
| 244 } | |
| 245 } | |
| 246 | |
| 247 var elbuffer = gl.getParameter(gl.ELEMENT_ARRAY_BUFFER_BINDING); | |
| 248 if (n % 2 == 0) { | |
| 249 if (elbuffer == state.elbuffer) { | |
| 250 // Matched | |
| 251 } else { | |
| 252 testFailed("ELEMENT_ARRAY_BUFFER_BINDING not preserved"); | |
| 253 anyMismatch = true; | |
| 254 } | |
| 255 } else { | |
| 256 if (elbuffer == null) { | |
| 257 // Matched | |
| 258 } else { | |
| 259 testFailed("ELEMENT_ARRAY_BUFFER_BINDING not preserved"); | |
| 260 anyMismatch = true; | |
| 261 } | |
| 262 } | |
| 263 } | |
| 264 ext.bindVertexArrayOES(null); | |
| 265 if (!anyMismatch) { | |
| 266 testPassed("All attributes preserved across bindings"); | |
| 267 } | |
| 268 | |
| 269 for (var n = 0; n < attrCount; n++) { | |
| 270 var state = states[n]; | |
| 271 ext.deleteVertexArrayOES(state.vao); | |
| 272 } | |
| 273 } | |
| 274 | |
| 275 function runAttributeValueTests() { | |
| 276 debug("Testing that attribute values are not attached to bindings"); | |
| 277 | |
| 278 var v; | |
| 279 var vao0 = ext.createVertexArrayOES(); | |
| 280 var anyFailed = false; | |
| 281 | |
| 282 ext.bindVertexArrayOES(null); | |
| 283 gl.vertexAttrib4f(0, 0, 1, 2, 3); | |
| 284 | |
| 285 v = gl.getVertexAttrib(0, gl.CURRENT_VERTEX_ATTRIB); | |
| 286 if (!(v[0] == 0 && v[1] == 1 && v[2] == 2 && v[3] == 3)) { | |
| 287 testFailed("Vertex attrib value not round-tripped?"); | |
| 288 anyFailed = true; | |
| 289 } | |
| 290 | |
| 291 ext.bindVertexArrayOES(vao0); | |
| 292 | |
| 293 v = gl.getVertexAttrib(0, gl.CURRENT_VERTEX_ATTRIB); | |
| 294 if (!(v[0] == 0 && v[1] == 1 && v[2] == 2 && v[3] == 3)) { | |
| 295 testFailed("Vertex attrib value reset across bindings"); | |
| 296 anyFailed = true; | |
| 297 } | |
| 298 | |
| 299 gl.vertexAttrib4f(0, 4, 5, 6, 7); | |
| 300 ext.bindVertexArrayOES(null); | |
| 301 | |
| 302 v = gl.getVertexAttrib(0, gl.CURRENT_VERTEX_ATTRIB); | |
| 303 if (!(v[0] == 4 && v[1] == 5 && v[2] == 6 && v[3] == 7)) { | |
| 304 testFailed("Vertex attrib value bound to buffer"); | |
| 305 anyFailed = true; | |
| 306 } | |
| 307 | |
| 308 if (!anyFailed) { | |
| 309 testPassed("Vertex attribute values are not attached to bindings") | |
| 310 } | |
| 311 | |
| 312 ext.bindVertexArrayOES(null); | |
| 313 ext.deleteVertexArrayOES(vao0); | |
| 314 } | |
| 315 | |
| 316 function runDrawTests() { | |
| 317 debug("Testing draws with various VAO bindings"); | |
| 318 | |
| 319 canvas.width = 50; canvas.height = 50; | |
| 320 gl.viewport(0, 0, canvas.width, canvas.height); | |
| 321 | |
| 322 var vao0 = ext.createVertexArrayOES(); | |
| 323 var vao1 = ext.createVertexArrayOES(); | |
| 324 | |
| 325 var program = wtu.setupSimpleTextureProgram(gl, 0, 1); | |
| 326 | |
| 327 function setupQuad(s) { | |
| 328 var opt_positionLocation = 0; | |
| 329 var opt_texcoordLocation = 1; | |
| 330 var vertexObject = gl.createBuffer(); | |
| 331 gl.bindBuffer(gl.ARRAY_BUFFER, vertexObject); | |
| 332 gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([ | |
| 333 1.0 * s, 1.0 * s, 0.0, | |
| 334 -1.0 * s, 1.0 * s, 0.0, | |
| 335 -1.0 * s, -1.0 * s, 0.0, | |
| 336 1.0 * s, 1.0 * s, 0.0, | |
| 337 -1.0 * s, -1.0 * s, 0.0, | |
| 338 1.0 * s, -1.0 * s, 0.0]), gl.STATIC_DRAW); | |
| 339 gl.enableVertexAttribArray(opt_positionLocation); | |
| 340 gl.vertexAttribPointer(opt_positionLocation, 3, gl.FLOAT, false, 0, 0); | |
| 341 | |
| 342 var vertexObject = gl.createBuffer(); | |
| 343 gl.bindBuffer(gl.ARRAY_BUFFER, vertexObject); | |
| 344 gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([ | |
| 345 1.0 * s, 1.0 * s, | |
| 346 0.0 * s, 1.0 * s, | |
| 347 0.0 * s, 0.0 * s, | |
| 348 1.0 * s, 1.0 * s, | |
| 349 0.0 * s, 0.0 * s, | |
| 350 1.0 * s, 0.0 * s]), gl.STATIC_DRAW); | |
| 351 gl.enableVertexAttribArray(opt_texcoordLocation); | |
| 352 gl.vertexAttribPointer(opt_texcoordLocation, 2, gl.FLOAT, false, 0, 0); | |
| 353 }; | |
| 354 | |
| 355 function readLocation(x, y) { | |
| 356 var pixels = new Uint8Array(1 * 1 * 4); | |
| 357 gl.readPixels(x, y, 1, 1, gl.RGBA, gl.UNSIGNED_BYTE, pixels); | |
| 358 return pixels; | |
| 359 }; | |
| 360 function testPixel(blackList, whiteList) { | |
| 361 function testList(list, expected) { | |
| 362 for (var n = 0; n < list.length; n++) { | |
| 363 var l = list[n]; | |
| 364 var x = -Math.floor(l * canvas.width / 2) + canvas.width / 2; | |
| 365 var y = -Math.floor(l * canvas.height / 2) + canvas.height / 2; | |
| 366 var source = readLocation(x, y); | |
| 367 if (Math.abs(source[0] - expected) > 2) { | |
| 368 return false; | |
| 369 } | |
| 370 } | |
| 371 return true; | |
| 372 } | |
| 373 return testList(blackList, 0) && testList(whiteList, 255); | |
| 374 }; | |
| 375 function verifyDraw(drawNumber, s) { | |
| 376 wtu.drawQuad(gl); | |
| 377 var blackList = []; | |
| 378 var whiteList = []; | |
| 379 var points = [0.0, 0.2, 0.4, 0.6, 0.8, 1.0]; | |
| 380 for (var n = 0; n < points.length; n++) { | |
| 381 if (points[n] <= s) { | |
| 382 blackList.push(points[n]); | |
| 383 } else { | |
| 384 whiteList.push(points[n]); | |
| 385 } | |
| 386 } | |
| 387 if (testPixel(blackList, whiteList)) { | |
| 388 testPassed("Draw " + drawNumber + " passed pixel test"); | |
| 389 } else { | |
| 390 testFailed("Draw " + drawNumber + " failed pixel test"); | |
| 391 } | |
| 392 }; | |
| 393 | |
| 394 // Setup all bindings | |
| 395 setupQuad(1); | |
| 396 ext.bindVertexArrayOES(vao0); | |
| 397 setupQuad(0.5); | |
| 398 ext.bindVertexArrayOES(vao1); | |
| 399 setupQuad(0.25); | |
| 400 | |
| 401 // Verify drawing | |
| 402 ext.bindVertexArrayOES(null); | |
| 403 verifyDraw(0, 1); | |
| 404 ext.bindVertexArrayOES(vao0); | |
| 405 verifyDraw(1, 0.5); | |
| 406 ext.bindVertexArrayOES(vao1); | |
| 407 verifyDraw(2, 0.25); | |
| 408 | |
| 409 ext.bindVertexArrayOES(null); | |
| 410 ext.deleteVertexArrayOES(vao0); | |
| 411 ext.deleteVertexArrayOES(vao1); | |
| 412 } | |
| 413 | |
| 414 function runDeleteTests() { | |
| 415 debug("Testing using deleted buffers referenced by VAOs"); | |
| 416 | |
| 417 var program = wtu.setupProgram(gl, ["vshader", "fshader"], ["a_position", "a
_color"]); | |
| 418 gl.useProgram(program); | |
| 419 | |
| 420 var positionBuffer = gl.createBuffer(); | |
| 421 gl.bindBuffer(gl.ARRAY_BUFFER, positionBuffer); | |
| 422 gl.bufferData( | |
| 423 gl.ARRAY_BUFFER, | |
| 424 new Float32Array([ | |
| 425 1.0, 1.0, | |
| 426 -1.0, 1.0, | |
| 427 -1.0, -1.0, | |
| 428 1.0, -1.0]), | |
| 429 gl.STATIC_DRAW); | |
| 430 | |
| 431 var colors = [ | |
| 432 [255, 0, 0, 255], | |
| 433 [ 0, 255, 0, 255], | |
| 434 [ 0, 0, 255, 255], | |
| 435 [ 0, 255, 255, 255] | |
| 436 ]; | |
| 437 var colorBuffers = []; | |
| 438 var elementBuffers = []; | |
| 439 var vaos = []; | |
| 440 for (var ii = 0; ii < colors.length; ++ii) { | |
| 441 var vao = ext.createVertexArrayOES(); | |
| 442 vaos.push(vao); | |
| 443 ext.bindVertexArrayOES(vao); | |
| 444 // Set the position buffer | |
| 445 gl.bindBuffer(gl.ARRAY_BUFFER, positionBuffer); | |
| 446 gl.enableVertexAttribArray(0); | |
| 447 gl.vertexAttribPointer(0, 2, gl.FLOAT, false, 0, 0); | |
| 448 | |
| 449 var elementBuffer = gl.createBuffer(); | |
| 450 elementBuffers.push(elementBuffer); | |
| 451 gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, elementBuffer); | |
| 452 gl.bufferData( | |
| 453 gl.ELEMENT_ARRAY_BUFFER, | |
| 454 new Uint8Array([0, 1, 2, 0, 2, 3]), | |
| 455 gl.STATIC_DRAW); | |
| 456 | |
| 457 // Setup the color attrib | |
| 458 var color = colors[ii]; | |
| 459 if (ii < 3) { | |
| 460 var colorBuffer = gl.createBuffer(); | |
| 461 colorBuffers.push(colorBuffer); | |
| 462 gl.bindBuffer(gl.ARRAY_BUFFER, colorBuffer); | |
| 463 gl.bufferData(gl.ARRAY_BUFFER, new Uint8Array( | |
| 464 [ color[0], color[1], color[2], color[3], | |
| 465 color[0], color[1], color[2], color[3], | |
| 466 color[0], color[1], color[2], color[3], | |
| 467 color[0], color[1], color[2], color[3] | |
| 468 ]), gl.STATIC_DRAW); | |
| 469 gl.enableVertexAttribArray(1); | |
| 470 gl.vertexAttribPointer(1, 4, gl.UNSIGNED_BYTE, true, 0, 0); | |
| 471 } else { | |
| 472 gl.vertexAttrib4f(1, color[0] / 255, color[1] / 255, color[2] / 255, col
or[3] / 255); | |
| 473 } | |
| 474 } | |
| 475 | |
| 476 // delete the color buffers AND the position buffer. | |
| 477 ext.bindVertexArrayOES(null); | |
| 478 for (var ii = 0; ii < colorBuffers.length; ++ii) { | |
| 479 gl.deleteBuffer(colorBuffers[ii]); | |
| 480 gl.deleteBuffer(elementBuffers[ii]); | |
| 481 // The buffers should still be valid at this point, since it was attached
to the VAO | |
| 482 if(!gl.isBuffer(colorBuffers[ii])) { | |
| 483 testFailed("buffer removed too early"); | |
| 484 } | |
| 485 } | |
| 486 gl.deleteBuffer(positionBuffer); | |
| 487 | |
| 488 // Render with the deleted buffers. As they are referenced by VAOs they | |
| 489 // must still be around. | |
| 490 for (var ii = 0; ii < colors.length; ++ii) { | |
| 491 var color = colors[ii]; | |
| 492 ext.bindVertexArrayOES(vaos[ii]); | |
| 493 gl.drawElements(gl.TRIANGLES, 6, gl.UNSIGNED_BYTE, 0); | |
| 494 wtu.checkCanvas(gl, color, "should be " + color); | |
| 495 } | |
| 496 | |
| 497 // Clean up. | |
| 498 for (var ii = 0; ii < colorBuffers.length; ++ii) { | |
| 499 ext.deleteVertexArrayOES(vaos[ii]); | |
| 500 } | |
| 501 | |
| 502 for (var ii = 0; ii < colorBuffers.length; ++ii) { | |
| 503 // The buffers should no longer be valid now that the VAOs are deleted | |
| 504 if(gl.isBuffer(colorBuffers[ii])) { | |
| 505 testFailed("buffer not properly cleaned up after VAO deletion"); | |
| 506 } | |
| 507 } | |
| 508 } | |
| 509 | |
| 510 function runArrayBufferBindTests() { | |
| 511 debug("Testing that VAOs don't effect ARRAY_BUFFER binding."); | |
| 512 | |
| 513 ext.bindVertexArrayOES(null); | |
| 514 | |
| 515 var program = wtu.setupProgram(gl, ["vshader", "fshader"], ["a_color", "a_po
sition"]); | |
| 516 gl.useProgram(program); | |
| 517 | |
| 518 // create shared element buuffer | |
| 519 var elementBuffer = gl.createBuffer(); | |
| 520 // bind to default | |
| 521 gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, elementBuffer); | |
| 522 gl.bufferData( | |
| 523 gl.ELEMENT_ARRAY_BUFFER, | |
| 524 new Uint8Array([0, 1, 2, 0, 2, 3]), | |
| 525 gl.STATIC_DRAW); | |
| 526 | |
| 527 // first create the buffers for no vao draw. | |
| 528 var nonVAOColorBuffer = gl.createBuffer(); | |
| 529 gl.bindBuffer(gl.ARRAY_BUFFER, nonVAOColorBuffer); | |
| 530 gl.bufferData(gl.ARRAY_BUFFER, new Uint8Array( | |
| 531 [ 0, 255, 0, 255, | |
| 532 0, 255, 0, 255, | |
| 533 0, 255, 0, 255, | |
| 534 0, 255, 0, 255, | |
| 535 ]), gl.STATIC_DRAW); | |
| 536 | |
| 537 // shared position buffer. | |
| 538 var positionBuffer = gl.createBuffer(); | |
| 539 gl.bindBuffer(gl.ARRAY_BUFFER, positionBuffer); | |
| 540 gl.bufferData( | |
| 541 gl.ARRAY_BUFFER, | |
| 542 new Float32Array([ | |
| 543 1.0, 1.0, | |
| 544 -1.0, 1.0, | |
| 545 -1.0, -1.0, | |
| 546 1.0, -1.0]), | |
| 547 gl.STATIC_DRAW); | |
| 548 | |
| 549 // attach position buffer to default | |
| 550 gl.enableVertexAttribArray(1); | |
| 551 gl.vertexAttribPointer(1, 2, gl.FLOAT, false, 0, 0); | |
| 552 | |
| 553 // now create vao | |
| 554 var vao = ext.createVertexArrayOES(); | |
| 555 ext.bindVertexArrayOES(vao); | |
| 556 | |
| 557 // attach the position buffer vao | |
| 558 gl.enableVertexAttribArray(1); | |
| 559 gl.vertexAttribPointer(1, 2, gl.FLOAT, false, 0, 0); | |
| 560 | |
| 561 var vaoColorBuffer = gl.createBuffer(); | |
| 562 gl.enableVertexAttribArray(0); | |
| 563 gl.vertexAttribPointer(0, 4, gl.UNSIGNED_BYTE, true, 0, 0); | |
| 564 gl.bindBuffer(gl.ARRAY_BUFFER, vaoColorBuffer); | |
| 565 gl.bufferData(gl.ARRAY_BUFFER, new Uint8Array( | |
| 566 [ 255, 0, 0, 255, | |
| 567 255, 0, 0, 255, | |
| 568 255, 0, 0, 255, | |
| 569 255, 0, 0, 255, | |
| 570 ]), gl.STATIC_DRAW); | |
| 571 gl.enableVertexAttribArray(0); | |
| 572 gl.vertexAttribPointer(0, 4, gl.UNSIGNED_BYTE, true, 0, 0); | |
| 573 | |
| 574 // now set the buffer back to the nonVAOColorBuffer | |
| 575 gl.bindBuffer(gl.ARRAY_BUFFER, nonVAOColorBuffer); | |
| 576 | |
| 577 // bind to vao | |
| 578 gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, elementBuffer); | |
| 579 gl.drawElements(gl.TRIANGLES, 6, gl.UNSIGNED_BYTE, 0); | |
| 580 wtu.checkCanvas(gl, [255, 0, 0, 255], "should be red"); | |
| 581 | |
| 582 // unbind vao | |
| 583 ext.bindVertexArrayOES(null); | |
| 584 | |
| 585 // At this point the nonVAOColorBuffer should be still be bound. | |
| 586 // If the WebGL impl is emulating VAOs it must make sure | |
| 587 // it correctly restores this binding. | |
| 588 gl.enableVertexAttribArray(0); | |
| 589 gl.vertexAttribPointer(0, 4, gl.UNSIGNED_BYTE, true, 0, 0); | |
| 590 gl.drawElements(gl.TRIANGLES, 6, gl.UNSIGNED_BYTE, 0); | |
| 591 wtu.checkCanvas(gl, [0, 255, 0, 255], "should be green"); | |
| 592 } | |
| 593 | |
| 594 debug(""); | |
| 595 successfullyParsed = true; | |
| 596 isSuccessfullyParsed(); | |
| 597 </script> | |
| 598 </body> | |
| 599 </html> | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 1601093008:
Remove duplicated WebGL layout tests. (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master