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| 1 <!-- |
| 2 Copyright (c) 2011 The Chromium Authors. All rights reserved. |
| 3 Use of this source code is governed by a BSD-style license that can be |
| 4 found in the LICENSE file. |
| 5 --> |
| 6 <!DOCTYPE html> |
| 7 <html> |
| 8 <head> |
| 9 <meta charset="utf-8"> |
| 10 <link rel="stylesheet" href="../../resources/js-test-style.css"/> |
| 11 <script src="../../resources/js-test-pre.js"></script> |
| 12 <script src="../resources/pnglib.js"></script> |
| 13 <script src="../resources/webgl-test.js"></script> |
| 14 <script src="../resources/webgl-test-utils.js"></script> |
| 15 |
| 16 <script> |
| 17 var wtu = WebGLTestUtils; |
| 18 var gl = null; |
| 19 var textureLoc = null; |
| 20 var successfullyParsed = false; |
| 21 |
| 22 //---------------------------------------------------------------------- |
| 23 // Harness |
| 24 |
| 25 var testCases = []; |
| 26 |
| 27 var DataMode = { |
| 28 IMAGE: 0, |
| 29 IMAGE_DATA: 1, |
| 30 |
| 31 NUM_HTML_MODES: 2, |
| 32 |
| 33 RAW_DATA: 2, |
| 34 |
| 35 // This must remain the last mode. |
| 36 NUM_MODES: 3 |
| 37 }; |
| 38 |
| 39 function init() |
| 40 { |
| 41 if (window.initNonKhronosFramework) { |
| 42 window.initNonKhronosFramework(true); |
| 43 } |
| 44 |
| 45 description('Verify texImage2D and texSubImage2D code paths taking both HTML
and user-specified data with all format/type combinations'); |
| 46 |
| 47 var canvas = document.getElementById("example"); |
| 48 gl = wtu.create3DContext(canvas); |
| 49 var program = wtu.setupTexturedQuad(gl); |
| 50 |
| 51 gl.clearColor(0,0,0,1); |
| 52 gl.clearDepth(1); |
| 53 gl.disable(gl.BLEND); |
| 54 |
| 55 textureLoc = gl.getUniformLocation(program, "tex"); |
| 56 |
| 57 initializeTests(); |
| 58 } |
| 59 |
| 60 function initializeTests() |
| 61 { |
| 62 // Verify that uploading to packed pixel formats performs the |
| 63 // required conversion and associated loss of precision. |
| 64 for (var dataMode = 0; dataMode < DataMode.NUM_HTML_MODES; ++dataMode) { |
| 65 for (var useTexSubImage2D = 0; useTexSubImage2D < 2; ++useTexSubImage2D)
{ |
| 66 testCases.push({ |
| 67 dataMode: dataMode, |
| 68 useTexSubImage2D: !!useTexSubImage2D, |
| 69 width: 256, |
| 70 height: 1, |
| 71 generator: generateOpaqueGrayscaleRamp, |
| 72 premultiplyAlpha: false, |
| 73 format: gl.RGBA, |
| 74 type: gl.UNSIGNED_BYTE, |
| 75 verifier: allChannelsIncreaseByNoMoreThan, |
| 76 threshold: 1, |
| 77 numOccurrences: 1, |
| 78 description: "RGBA/UNSIGNED_BYTE should maintain full precision
of data" |
| 79 }); |
| 80 testCases.push({ |
| 81 dataMode: dataMode, |
| 82 useTexSubImage2D: !!useTexSubImage2D, |
| 83 width: 256, |
| 84 height: 1, |
| 85 generator: generateOpaqueGrayscaleRamp, |
| 86 premultiplyAlpha: false, |
| 87 format: gl.RGBA, |
| 88 type: gl.UNSIGNED_SHORT_4_4_4_4, |
| 89 verifier: allChannelsIncreaseByAtLeast, |
| 90 threshold: 15, |
| 91 numOccurrences: 10, |
| 92 description: "RGBA/UNSIGNED_SHORT_4_4_4_4 must drop low four bit
s of precision" |
| 93 }); |
| 94 testCases.push({ |
| 95 dataMode: dataMode, |
| 96 useTexSubImage2D: !!useTexSubImage2D, |
| 97 width: 256, |
| 98 height: 1, |
| 99 generator: generateOpaqueGrayscaleRamp, |
| 100 premultiplyAlpha: false, |
| 101 format: gl.RGBA, |
| 102 type: gl.UNSIGNED_SHORT_5_5_5_1, |
| 103 verifier: allChannelsIncreaseByAtLeast, |
| 104 threshold: 7, |
| 105 numOccurrences: 20, |
| 106 description: "RGBA/UNSIGNED_SHORT_5_5_5_1 must drop low three bi
ts of precision" |
| 107 }); |
| 108 testCases.push({ |
| 109 dataMode: dataMode, |
| 110 useTexSubImage2D: !!useTexSubImage2D, |
| 111 width: 256, |
| 112 height: 1, |
| 113 generator: generateOpaqueGrayscaleRamp, |
| 114 premultiplyAlpha: false, |
| 115 format: gl.RGB, |
| 116 type: gl.UNSIGNED_BYTE, |
| 117 verifier: allChannelsIncreaseByNoMoreThan, |
| 118 threshold: 1, |
| 119 numOccurrences: 1, |
| 120 description: "RGB/UNSIGNED_BYTE should maintain full precision o
f data" |
| 121 }); |
| 122 testCases.push({ |
| 123 dataMode: dataMode, |
| 124 useTexSubImage2D: !!useTexSubImage2D, |
| 125 width: 256, |
| 126 height: 1, |
| 127 generator: generateOpaqueGrayscaleRamp, |
| 128 premultiplyAlpha: false, |
| 129 format: gl.RGB, |
| 130 type: gl.UNSIGNED_SHORT_5_6_5, |
| 131 verifier: allChannelsIncreaseByAtLeast, |
| 132 threshold: 3, |
| 133 numOccurrences: 20, |
| 134 description: "RGB/UNSIGNED_SHORT_5_6_5 must drop low two or thre
e bits of precision" |
| 135 }); |
| 136 testCases.push({ |
| 137 dataMode: dataMode, |
| 138 useTexSubImage2D: !!useTexSubImage2D, |
| 139 width: 256, |
| 140 height: 1, |
| 141 generator: generateTranslucentGrayscaleRamp, |
| 142 premultiplyAlpha: false, |
| 143 format: gl.ALPHA, |
| 144 type: gl.UNSIGNED_BYTE, |
| 145 verifier: alphaChannelIncreasesByNoMoreThan, |
| 146 threshold: 1, |
| 147 numOccurrences: 1, |
| 148 description: "ALPHA/UNSIGNED_BYTE should maintain full precision
of data" |
| 149 }); |
| 150 testCases.push({ |
| 151 dataMode: dataMode, |
| 152 useTexSubImage2D: !!useTexSubImage2D, |
| 153 width: 256, |
| 154 height: 1, |
| 155 generator: generateOpaqueGrayscaleRamp, |
| 156 premultiplyAlpha: false, |
| 157 format: gl.LUMINANCE, |
| 158 type: gl.UNSIGNED_BYTE, |
| 159 verifier: allChannelsIncreaseByNoMoreThan, |
| 160 threshold: 1, |
| 161 numOccurrences: 1, |
| 162 description: "LUMINANCE/UNSIGNED_BYTE should maintain full preci
sion of data" |
| 163 }); |
| 164 testCases.push({ |
| 165 dataMode: dataMode, |
| 166 useTexSubImage2D: !!useTexSubImage2D, |
| 167 width: 256, |
| 168 height: 1, |
| 169 generator: generateOpaqueGrayscaleRamp, |
| 170 premultiplyAlpha: false, |
| 171 format: gl.LUMINANCE_ALPHA, |
| 172 type: gl.UNSIGNED_BYTE, |
| 173 verifier: allChannelsIncreaseByNoMoreThan, |
| 174 threshold: 1, |
| 175 numOccurrences: 1, |
| 176 description: "LUMINANCE_ALPHA/UNSIGNED_BYTE should maintain full
precision of data" |
| 177 }); |
| 178 } |
| 179 } |
| 180 |
| 181 // Verify that setting the UNPACK_PREMULTIPLY_ALPHA_WEBGL pixel |
| 182 // store parameter and sending down a zero alpha causes the color |
| 183 // channels to go to zero. |
| 184 for (var dataMode = 0; dataMode < DataMode.NUM_MODES; ++dataMode) { |
| 185 for (var useTexSubImage2D = 0; useTexSubImage2D < 2; ++useTexSubImage2D)
{ |
| 186 testCases.push({ |
| 187 dataMode: dataMode, |
| 188 useTexSubImage2D: !!useTexSubImage2D, |
| 189 width: 256, |
| 190 height: 1, |
| 191 generator: generateTransparentGrayscaleRamp, |
| 192 premultiplyAlpha: true, |
| 193 format: gl.RGBA, |
| 194 type: gl.UNSIGNED_BYTE, |
| 195 verifier: colorChannelsAreZero, |
| 196 description: "UNPACK_PREMULTIPLY_ALPHA_WEBGL with RGBA/UNSIGNED_
BYTE" |
| 197 }); |
| 198 testCases.push({ |
| 199 dataMode: dataMode, |
| 200 useTexSubImage2D: !!useTexSubImage2D, |
| 201 width: 256, |
| 202 height: 1, |
| 203 generator: generateTransparentGrayscaleRamp, |
| 204 premultiplyAlpha: true, |
| 205 format: gl.RGBA, |
| 206 type: gl.UNSIGNED_SHORT_4_4_4_4, |
| 207 verifier: colorChannelsAreZero, |
| 208 description: "UNPACK_PREMULTIPLY_ALPHA_WEBGL with RGBA/UNSIGNED_
SHORT_4_4_4_4" |
| 209 }); |
| 210 testCases.push({ |
| 211 dataMode: dataMode, |
| 212 useTexSubImage2D: !!useTexSubImage2D, |
| 213 width: 256, |
| 214 height: 1, |
| 215 generator: generateTransparentGrayscaleRamp, |
| 216 premultiplyAlpha: true, |
| 217 format: gl.RGBA, |
| 218 type: gl.UNSIGNED_SHORT_5_5_5_1, |
| 219 verifier: colorChannelsAreZero, |
| 220 description: "UNPACK_PREMULTIPLY_ALPHA_WEBGL with RGBA/UNSIGNED_
SHORT_5_5_5_1" |
| 221 }); |
| 222 // The following few tests are invalid for the raw data |
| 223 // mode because there is either no alpha channel or no |
| 224 // separate alpha channel. |
| 225 if (dataMode != DataMode.RAW_DATA) { |
| 226 testCases.push({ |
| 227 dataMode: dataMode, |
| 228 useTexSubImage2D: !!useTexSubImage2D, |
| 229 width: 256, |
| 230 height: 1, |
| 231 generator: generateTransparentGrayscaleRamp, |
| 232 premultiplyAlpha: true, |
| 233 format: gl.RGB, |
| 234 type: gl.UNSIGNED_BYTE, |
| 235 verifier: colorChannelsAreZero, |
| 236 description: "UNPACK_PREMULTIPLY_ALPHA_WEBGL with RGB/UNSIGN
ED_BYTE" |
| 237 }); |
| 238 testCases.push({ |
| 239 dataMode: dataMode, |
| 240 useTexSubImage2D: !!useTexSubImage2D, |
| 241 width: 256, |
| 242 height: 1, |
| 243 generator: generateTransparentGrayscaleRamp, |
| 244 premultiplyAlpha: true, |
| 245 format: gl.RGB, |
| 246 type: gl.UNSIGNED_SHORT_5_6_5, |
| 247 verifier: colorChannelsAreZero, |
| 248 description: "UNPACK_PREMULTIPLY_ALPHA_WEBGL with RGB/UNSIGN
ED_SHORT_5_6_5" |
| 249 }); |
| 250 testCases.push({ |
| 251 dataMode: dataMode, |
| 252 useTexSubImage2D: !!useTexSubImage2D, |
| 253 width: 256, |
| 254 height: 1, |
| 255 generator: generateTransparentGrayscaleRamp, |
| 256 premultiplyAlpha: true, |
| 257 format: gl.ALPHA, |
| 258 type: gl.UNSIGNED_BYTE, |
| 259 verifier: colorChannelsAreZero, |
| 260 description: "UNPACK_PREMULTIPLY_ALPHA_WEBGL with ALPHA/UNSI
GNED_BYTE" |
| 261 }); |
| 262 testCases.push({ |
| 263 dataMode: dataMode, |
| 264 useTexSubImage2D: !!useTexSubImage2D, |
| 265 width: 256, |
| 266 height: 1, |
| 267 generator: generateTransparentGrayscaleRamp, |
| 268 premultiplyAlpha: true, |
| 269 format: gl.LUMINANCE, |
| 270 type: gl.UNSIGNED_BYTE, |
| 271 verifier: colorChannelsAreZero, |
| 272 description: "UNPACK_PREMULTIPLY_ALPHA_WEBGL with LUMINANCE/
UNSIGNED_BYTE" |
| 273 }); |
| 274 } |
| 275 testCases.push({ |
| 276 dataMode: dataMode, |
| 277 useTexSubImage2D: !!useTexSubImage2D, |
| 278 width: 256, |
| 279 height: 1, |
| 280 generator: generateTransparentGrayscaleRamp, |
| 281 premultiplyAlpha: true, |
| 282 format: gl.LUMINANCE_ALPHA, |
| 283 type: gl.UNSIGNED_BYTE, |
| 284 verifier: colorChannelsAreZero, |
| 285 description: "UNPACK_PREMULTIPLY_ALPHA_WEBGL with LUMINANCE_ALPH
A/UNSIGNED_BYTE" |
| 286 }); |
| 287 } |
| 288 } |
| 289 |
| 290 // Produce data for all testcases. Because we load images, some of |
| 291 // these may generate their data asynchronously. |
| 292 generateTestData(); |
| 293 } |
| 294 |
| 295 function generateTestData() |
| 296 { |
| 297 for (var i = 0; i < testCases.length; i++) { |
| 298 var testCase = testCases[i]; |
| 299 var wrapper = null; |
| 300 switch (testCase.dataMode) { |
| 301 case DataMode.IMAGE: |
| 302 wrapper = new ImageWrapper(testCase.width, testCase.height); |
| 303 break; |
| 304 case DataMode.IMAGE_DATA: |
| 305 wrapper = new ImageDataWrapper(testCase.width, testCase.height); |
| 306 break; |
| 307 case DataMode.RAW_DATA: |
| 308 switch (testCase.type) { |
| 309 case gl.UNSIGNED_BYTE: |
| 310 switch (testCase.format) { |
| 311 case gl.RGBA: |
| 312 wrapper = new RGBA8DataWrapper(testCase.width, testCase.heig
ht); |
| 313 break; |
| 314 case gl.RGB: |
| 315 wrapper = new RGB8DataWrapper(testCase.width, testCase.heigh
t); |
| 316 break; |
| 317 case gl.ALPHA: |
| 318 wrapper = new A8DataWrapper(testCase.width, testCase.height)
; |
| 319 break; |
| 320 case gl.LUMINANCE: |
| 321 wrapper = new L8DataWrapper(testCase.width, testCase.height)
; |
| 322 break; |
| 323 case gl.LUMINANCE_ALPHA: |
| 324 wrapper = new LA8DataWrapper(testCase.width, testCase.height
); |
| 325 break; |
| 326 } |
| 327 break; |
| 328 case gl.UNSIGNED_SHORT_4_4_4_4: |
| 329 wrapper = new RGBA4444DataWrapper(testCase.width, testCase.heigh
t); |
| 330 break; |
| 331 case gl.UNSIGNED_SHORT_5_5_5_1: |
| 332 wrapper = new RGBA5551DataWrapper(testCase.width, testCase.heigh
t); |
| 333 break; |
| 334 case gl.UNSIGNED_SHORT_5_6_5: |
| 335 wrapper = new RGB565DataWrapper(testCase.width, testCase.height)
; |
| 336 break; |
| 337 } |
| 338 } |
| 339 testCase.wrapper = wrapper; |
| 340 testCase.generator(wrapper); |
| 341 testCase.wrapper.generateData(); |
| 342 } |
| 343 |
| 344 // See whether we need to run the tests, in case all of them |
| 345 // generated their results synchronously. |
| 346 maybeRunTests(); |
| 347 } |
| 348 |
| 349 var ranTests = false; |
| 350 |
| 351 function maybeRunTests() |
| 352 { |
| 353 if (!ranTests) |
| 354 for (var i = 0; i < testCases.length; ++i) |
| 355 if (!testCases[i].wrapper || !testCases[i].wrapper.data) |
| 356 return; |
| 357 |
| 358 ranTests = true; |
| 359 |
| 360 for (var i = 0; i < testCases.length; ++i) |
| 361 runOneTest(testCases[i]); |
| 362 |
| 363 finishTest(); |
| 364 } |
| 365 |
| 366 function testCaseToString(testCase) |
| 367 { |
| 368 var mode; |
| 369 switch (testCase.dataMode) { |
| 370 case DataMode.IMAGE: |
| 371 mode = "Image"; |
| 372 break; |
| 373 case DataMode.IMAGE_DATA: |
| 374 mode = "ImageData"; |
| 375 break; |
| 376 case DataMode.RAW_DATA: |
| 377 mode = "raw data"; |
| 378 break; |
| 379 } |
| 380 return (testCase.useTexSubImage2D ? "texSubImage2D" : "texImage2D") + |
| 381 " with " + mode + " at " + testCase.width + "x" + testCase.height; |
| 382 } |
| 383 |
| 384 function runOneTest(testCase) |
| 385 { |
| 386 debug("Testing " + testCaseToString(testCase)); |
| 387 var data = testCase.wrapper.data; |
| 388 gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT); |
| 389 var texture = gl.createTexture(); |
| 390 // Bind the texture to texture unit 0. |
| 391 gl.bindTexture(gl.TEXTURE_2D, texture); |
| 392 // Set up texture parameters. |
| 393 gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST); |
| 394 gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST); |
| 395 // Set up pixel store parameters. |
| 396 gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, testCase.premultiplyAlpha)
; |
| 397 // Upload the image into the texture. |
| 398 if (testCase.useTexSubImage2D) { |
| 399 // Initialize the texture to black first. |
| 400 gl.texImage2D(gl.TEXTURE_2D, 0, testCase.format, testCase.width, testCas
e.height, 0, |
| 401 testCase.format, testCase.type, null); |
| 402 } |
| 403 switch (testCase.dataMode) { |
| 404 case DataMode.IMAGE: |
| 405 case DataMode.IMAGE_DATA: |
| 406 if (testCase.useTexSubImage2D) |
| 407 gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, testCase.format, testCase.t
ype, data); |
| 408 else |
| 409 gl.texImage2D(gl.TEXTURE_2D, 0, testCase.format, testCase.format, te
stCase.type, data); |
| 410 break; |
| 411 case DataMode.RAW_DATA: |
| 412 if (testCase.useTexSubImage2D) |
| 413 gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, testCase.width, testCase.he
ight, testCase.format, testCase.type, data); |
| 414 else |
| 415 gl.texImage2D(gl.TEXTURE_2D, 0, testCase.format, testCase.width, tes
tCase.height, 0, testCase.format, testCase.type, data); |
| 416 break; |
| 417 } |
| 418 // Point the uniform sampler to texture unit 0. |
| 419 gl.uniform1i(textureLoc, 0); |
| 420 // Draw the triangles. |
| 421 gl.drawArrays(gl.TRIANGLES, 0, 6); |
| 422 // Clean up the texture. |
| 423 gl.deleteTexture(texture); |
| 424 |
| 425 // Read back the rendering results. |
| 426 buf = new Uint8Array(testCase.width * testCase.height * 4); |
| 427 gl.readPixels(0, 0, testCase.width, testCase.height, gl.RGBA, gl.UNSIGNED_BY
TE, buf); |
| 428 // Run the verification routine. |
| 429 if (testCase.verifier(buf, testCase.threshold, testCase.numOccurrences)) |
| 430 testPassed(testCase.description); |
| 431 else |
| 432 testFailed(testCase.description); |
| 433 } |
| 434 |
| 435 //---------------------------------------------------------------------- |
| 436 // Wrappers for programmatic construction of Image, ImageData and raw texture da
ta |
| 437 // |
| 438 |
| 439 function ImageWrapper(width, height) |
| 440 { |
| 441 this.pngBuilder_ = new PNGlib(width, height, 256); |
| 442 } |
| 443 |
| 444 ImageWrapper.prototype.getWidth = function() { |
| 445 return this.pngBuilder_.width; |
| 446 }; |
| 447 |
| 448 ImageWrapper.prototype.getHeight = function() { |
| 449 return this.pngBuilder_.height; |
| 450 }; |
| 451 |
| 452 ImageWrapper.prototype.setPixel = function(x, y, r, g, b, a) { |
| 453 this.pngBuilder_.buffer[this.pngBuilder_.index(x, y)] = this.pngBuilder_.col
or(r, g, b, a); |
| 454 }; |
| 455 |
| 456 // Generates data into "data" property, possibly asynchronously. |
| 457 ImageWrapper.prototype.generateData = function() { |
| 458 var that = this; |
| 459 var img = new Image(); |
| 460 img.onload = function() { |
| 461 that.data = img; |
| 462 maybeRunTests(); |
| 463 }; |
| 464 img.src = "data:image/png;base64," + this.pngBuilder_.getBase64(); |
| 465 }; |
| 466 |
| 467 function ImageDataWrapper(width, height) |
| 468 { |
| 469 if (!ImageDataWrapper.tempCanvas) { |
| 470 ImageDataWrapper.tempCanvas = document.createElement("canvas"); |
| 471 } |
| 472 this.imageData_ = ImageDataWrapper.tempCanvas.getContext("2d").createImageDa
ta(width, height); |
| 473 } |
| 474 |
| 475 ImageDataWrapper.tempCanvas = null; |
| 476 |
| 477 ImageDataWrapper.prototype.getWidth = function() { |
| 478 return this.imageData_.width; |
| 479 }; |
| 480 |
| 481 ImageDataWrapper.prototype.getHeight = function() { |
| 482 return this.imageData_.height; |
| 483 }; |
| 484 |
| 485 ImageDataWrapper.prototype.setPixel = function(x, y, r, g, b, a) { |
| 486 var index = 4 * (this.imageData_.width * y + x); |
| 487 this.imageData_.data[index] = r; |
| 488 this.imageData_.data[index + 1] = g; |
| 489 this.imageData_.data[index + 2] = b; |
| 490 this.imageData_.data[index + 3] = a; |
| 491 }; |
| 492 |
| 493 ImageDataWrapper.prototype.generateData = function() { |
| 494 this.data = this.imageData_; |
| 495 maybeRunTests(); |
| 496 }; |
| 497 |
| 498 function TextureDataWrapper(width, height) |
| 499 { |
| 500 this.width_ = width; |
| 501 this.height_ = height; |
| 502 } |
| 503 |
| 504 TextureDataWrapper.prototype.getWidth = function() { |
| 505 return this.width_; |
| 506 }; |
| 507 |
| 508 TextureDataWrapper.prototype.getHeight = function() { |
| 509 return this.height_; |
| 510 }; |
| 511 |
| 512 TextureDataWrapper.prototype.generateData = function() { |
| 513 this.data = this.data_; |
| 514 maybeRunTests(); |
| 515 }; |
| 516 |
| 517 function RGBA8DataWrapper(width, height) |
| 518 { |
| 519 TextureDataWrapper.call(this, width, height); |
| 520 this.data_ = new Uint8Array(4 * width * height); |
| 521 } |
| 522 |
| 523 RGBA8DataWrapper.prototype = new TextureDataWrapper; |
| 524 |
| 525 RGBA8DataWrapper.prototype.setPixel = function(x, y, r, g, b, a) { |
| 526 var index = 4 * (this.width_ * y + x); |
| 527 this.data_[index] = r; |
| 528 this.data_[index + 1] = g; |
| 529 this.data_[index + 2] = b; |
| 530 this.data_[index + 3] = a; |
| 531 }; |
| 532 |
| 533 function RGBA5551DataWrapper(width, height) |
| 534 { |
| 535 TextureDataWrapper.call(this, width, height); |
| 536 this.data_ = new Uint16Array(width * height); |
| 537 } |
| 538 |
| 539 RGBA5551DataWrapper.prototype = new TextureDataWrapper; |
| 540 |
| 541 RGBA5551DataWrapper.prototype.setPixel = function(x, y, r, g, b, a) { |
| 542 var value = (((r & 0xF8) << 8) |
| 543 | ((g & 0xF8) << 3) |
| 544 | ((b & 0xF8) >> 2) |
| 545 | (a >> 7)); |
| 546 this.data_[this.width_ * y + x] = value; |
| 547 }; |
| 548 |
| 549 function RGBA4444DataWrapper(width, height) |
| 550 { |
| 551 TextureDataWrapper.call(this, width, height); |
| 552 this.data_ = new Uint16Array(width * height); |
| 553 } |
| 554 |
| 555 RGBA4444DataWrapper.prototype = new TextureDataWrapper; |
| 556 |
| 557 RGBA4444DataWrapper.prototype.setPixel = function(x, y, r, g, b, a) { |
| 558 var value = (((r & 0xF0) << 8) |
| 559 | ((g & 0xF0) << 4) |
| 560 | (b & 0xF0) |
| 561 | (a >> 4)); |
| 562 this.data_[this.width_ * y + x] = value; |
| 563 }; |
| 564 |
| 565 function RGB8DataWrapper(width, height) |
| 566 { |
| 567 TextureDataWrapper.call(this, width, height); |
| 568 this.data_ = new Uint8Array(3 * width * height); |
| 569 } |
| 570 |
| 571 RGB8DataWrapper.prototype = new TextureDataWrapper; |
| 572 |
| 573 RGB8DataWrapper.prototype.setPixel = function(x, y, r, g, b, a) { |
| 574 var index = 3 * (this.width_ * y + x); |
| 575 this.data_[index] = r; |
| 576 this.data_[index + 1] = g; |
| 577 this.data_[index + 2] = b; |
| 578 }; |
| 579 |
| 580 function RGB565DataWrapper(width, height) |
| 581 { |
| 582 TextureDataWrapper.call(this, width, height); |
| 583 this.data_ = new Uint16Array(width * height); |
| 584 } |
| 585 |
| 586 RGB565DataWrapper.prototype = new TextureDataWrapper; |
| 587 |
| 588 RGB565DataWrapper.prototype.setPixel = function(x, y, r, g, b, a) { |
| 589 var value = (((r & 0xF8) << 8) |
| 590 | ((g & 0xFC) << 3) |
| 591 | ((b & 0xF8) >> 3)); |
| 592 this.data_[this.width_ * y + x] = value; |
| 593 }; |
| 594 |
| 595 function A8DataWrapper(width, height) |
| 596 { |
| 597 TextureDataWrapper.call(this, width, height); |
| 598 this.data_ = new Uint8Array(width * height); |
| 599 } |
| 600 |
| 601 A8DataWrapper.prototype = new TextureDataWrapper; |
| 602 |
| 603 A8DataWrapper.prototype.setPixel = function(x, y, r, g, b, a) { |
| 604 this.data_[this.width_ * y + x] = a; |
| 605 }; |
| 606 |
| 607 function L8DataWrapper(width, height) |
| 608 { |
| 609 TextureDataWrapper.call(this, width, height); |
| 610 this.data_ = new Uint8Array(width * height); |
| 611 } |
| 612 |
| 613 L8DataWrapper.prototype = new TextureDataWrapper; |
| 614 |
| 615 L8DataWrapper.prototype.setPixel = function(x, y, r, g, b, a) { |
| 616 this.data_[this.width_ * y + x] = r; |
| 617 }; |
| 618 |
| 619 function LA8DataWrapper(width, height) |
| 620 { |
| 621 TextureDataWrapper.call(this, width, height); |
| 622 this.data_ = new Uint8Array(2 * width * height); |
| 623 } |
| 624 |
| 625 LA8DataWrapper.prototype = new TextureDataWrapper; |
| 626 |
| 627 LA8DataWrapper.prototype.setPixel = function(x, y, r, g, b, a) { |
| 628 var index = 2 * (this.width_ * y + x); |
| 629 this.data_[index] = r; |
| 630 this.data_[index + 1] = a; |
| 631 }; |
| 632 |
| 633 //---------------------------------------------------------------------- |
| 634 // Color ramp generation functions |
| 635 // |
| 636 |
| 637 function generateOpaqueGrayscaleRamp(wrapper) |
| 638 { |
| 639 var width = wrapper.getWidth(); |
| 640 var height = wrapper.getHeight(); |
| 641 for (var x = 0; x < width; ++x) { |
| 642 var value = Math.round(255.0 * x / width); |
| 643 for (var y = 0; y < height; ++y) |
| 644 wrapper.setPixel(x, y, value, value, value, 255); |
| 645 } |
| 646 } |
| 647 |
| 648 function generateTranslucentGrayscaleRamp(wrapper) |
| 649 { |
| 650 var width = wrapper.getWidth(); |
| 651 var height = wrapper.getHeight(); |
| 652 for (var x = 0; x < width; ++x) { |
| 653 var value = Math.round(255.0 * x / width); |
| 654 for (var y = 0; y < height; ++y) |
| 655 wrapper.setPixel(x, y, value, value, value, value); |
| 656 } |
| 657 } |
| 658 |
| 659 function generateTransparentGrayscaleRamp(wrapper) |
| 660 { |
| 661 var width = wrapper.getWidth(); |
| 662 var height = wrapper.getHeight(); |
| 663 for (var x = 0; x < width; ++x) { |
| 664 var value = Math.round(255.0 * x / width); |
| 665 for (var y = 0; y < height; ++y) |
| 666 wrapper.setPixel(x, y, value, value, value, 0); |
| 667 } |
| 668 } |
| 669 |
| 670 //---------------------------------------------------------------------- |
| 671 // Verification routines |
| 672 // |
| 673 |
| 674 function allChannelsIncreaseByNoMoreThan(array, threshold, numOccurrences) { |
| 675 var numFound = 0; |
| 676 for (var i = 4; i < array.length; i += 4) |
| 677 for (var j = 0; j < 4; j++) |
| 678 if (array[i + j] - array[i + j - 4] > threshold) |
| 679 ++numFound; |
| 680 |
| 681 return numFound < numOccurrences; |
| 682 } |
| 683 |
| 684 function alphaChannelIncreasesByNoMoreThan(array, threshold, numOccurrences) { |
| 685 var numFound = 0; |
| 686 for (var i = 7; i < array.length; i += 4) |
| 687 if (array[i] - array[i - 4] > threshold) |
| 688 ++numFound; |
| 689 |
| 690 return numFound < numOccurrences; |
| 691 } |
| 692 |
| 693 function allChannelsIncreaseByAtLeast(array, threshold, numOccurrences) { |
| 694 var numFound = 0; |
| 695 for (var i = 4; i < array.length; i += 4) |
| 696 for (var j = 0; j < 4; ++j) |
| 697 if (array[i + j] - array[i + j - 4] > threshold) |
| 698 ++numFound; |
| 699 |
| 700 return numFound > numOccurrences; |
| 701 } |
| 702 |
| 703 function colorChannelsAreZero(array, threshold, numOccurrences) { |
| 704 var passed = true; |
| 705 var numFailures = 0; |
| 706 |
| 707 for (var i = 4; i < array.length; i += 4) |
| 708 for (var j = 0; j < 3; ++j) |
| 709 if (array[i + j] != 0) { |
| 710 passed = false; |
| 711 if (++numFailures <= 5) |
| 712 debug(" array[" + (i + j) + "] should have been 0, was " +
array[i + j]); |
| 713 } |
| 714 |
| 715 return passed; |
| 716 } |
| 717 |
| 718 </script> |
| 719 </head> |
| 720 <body onload="init()"> |
| 721 <canvas id="example" width="256px" height="1px"></canvas> |
| 722 <div id="description"></div> |
| 723 <div id="console"></div> |
| 724 </body> |
| 725 </html> |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 8342021:
Add webgl conformance tests r15841. (Closed)
Base URL: svn://chrome-svn/chrome/trunk/deps/third_party/webgl/sdk/tests/