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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 <title>WebGL OES_standard_derivatives Conformance Tests</title> | |
| 11 <link rel="stylesheet" href="../../resources/js-test-style.css"/> | |
| 12 <script src="../../resources/desktop-gl-constants.js" type="text/javascript"></s
cript> | |
| 13 <script src="../../resources/js-test-pre.js"></script> | |
| 14 <script src="../resources/webgl-test.js"></script> | |
| 15 <script src="../resources/webgl-test-utils.js"></script> | |
| 16 </head> | |
| 17 <body> | |
| 18 <div id="description"></div> | |
| 19 <canvas id="canvas" style="width: 50px; height: 50px;"> </canvas> | |
| 20 <div id="console"></div> | |
| 21 <!-- Shaders for testing standard derivatives --> | |
| 22 | |
| 23 <!-- Shader omitting the required #extension pragma --> | |
| 24 <script id="missingPragmaFragmentShader" type="x-shader/x-fragment"> | |
| 25 precision mediump float; | |
| 26 varying vec2 texCoord; | |
| 27 void main() { | |
| 28 float dx = dFdx(texCoord.x); | |
| 29 float dy = dFdy(texCoord.y); | |
| 30 float w = fwidth(texCoord.x); | |
| 31 gl_FragColor = vec4(dx, dy, w, 1.0); | |
| 32 } | |
| 33 </script> | |
| 34 | |
| 35 <!-- Shader to test macro definition --> | |
| 36 <script id="macroFragmentShader" type="x-shader/x-fragment"> | |
| 37 precision mediump float; | |
| 38 void main() { | |
| 39 #ifdef GL_OES_standard_derivatives | |
| 40 gl_FragColor = vec4(0.0, 0.0, 0.0, 0.0); | |
| 41 #else | |
| 42 // Error expected | |
| 43 #error no GL_OES_standard_derivatives; | |
| 44 #endif | |
| 45 } | |
| 46 </script> | |
| 47 | |
| 48 <!-- Shader with required #extension pragma --> | |
| 49 <script id="testFragmentShader" type="x-shader/x-fragment"> | |
| 50 #extension GL_OES_standard_derivatives : enable | |
| 51 precision mediump float; | |
| 52 varying vec2 texCoord; | |
| 53 void main() { | |
| 54 float dx = dFdx(texCoord.x); | |
| 55 float dy = dFdy(texCoord.y); | |
| 56 float w = fwidth(texCoord.x); | |
| 57 gl_FragColor = vec4(dx, dy, w, 1.0); | |
| 58 } | |
| 59 </script> | |
| 60 | |
| 61 <!-- Shaders to test output --> | |
| 62 <script id="outputVertexShader" type="x-shader/x-vertex"> | |
| 63 attribute vec4 vPosition; | |
| 64 varying vec4 position; | |
| 65 void main() { | |
| 66 position = vPosition; | |
| 67 gl_Position = vPosition; | |
| 68 } | |
| 69 </script> | |
| 70 <script id="outputFragmentShader" type="x-shader/x-fragment"> | |
| 71 #extension GL_OES_standard_derivatives : enable | |
| 72 precision mediump float; | |
| 73 varying vec4 position; | |
| 74 void main() { | |
| 75 float dzdx = dFdx(position.z); | |
| 76 float dzdy = dFdy(position.z); | |
| 77 float fw = fwidth(position.z); | |
| 78 gl_FragColor = vec4(abs(dzdx), abs(dzdy), fw, 1.0); | |
| 79 } | |
| 80 </script> | |
| 81 | |
| 82 <script> | |
| 83 description("This test verifies the functionality of the OES_standard_derivative
s extension, if it is available."); | |
| 84 | |
| 85 debug(""); | |
| 86 | |
| 87 var wtu = WebGLTestUtils; | |
| 88 var canvas = document.getElementById("canvas"); | |
| 89 var gl = create3DContext(canvas); | |
| 90 var ext = null; | |
| 91 | |
| 92 if (!gl) { | |
| 93 testFailed("WebGL context does not exist"); | |
| 94 } else { | |
| 95 testPassed("WebGL context exists"); | |
| 96 | |
| 97 // Run tests with extension disabled | |
| 98 runHintTestDisabled(); | |
| 99 runShaderTests(false); | |
| 100 | |
| 101 // Query the extension and store globally so shouldBe can access it | |
| 102 ext = gl.getExtension("OES_standard_derivatives"); | |
| 103 if (!ext) { | |
| 104 testPassed("No OES_standard_derivatives support -- this is legal"); | |
| 105 | |
| 106 runSupportedTest(false); | |
| 107 } else { | |
| 108 testPassed("Successfully enabled OES_standard_derivatives extension"); | |
| 109 | |
| 110 runSupportedTest(true); | |
| 111 | |
| 112 runHintTestEnabled(); | |
| 113 runShaderTests(true); | |
| 114 runOutputTests(); | |
| 115 runUniqueObjectTest(); | |
| 116 } | |
| 117 } | |
| 118 | |
| 119 function runSupportedTest(extensionEnabled) { | |
| 120 var supported = gl.getSupportedExtensions(); | |
| 121 if (supported.indexOf("OES_standard_derivatives") >= 0) { | |
| 122 if (extensionEnabled) { | |
| 123 testPassed("OES_standard_derivatives listed as supported and getExte
nsion succeeded"); | |
| 124 } else { | |
| 125 testFailed("OES_standard_derivatives listed as supported but getExte
nsion failed"); | |
| 126 } | |
| 127 } else { | |
| 128 if (extensionEnabled) { | |
| 129 testFailed("OES_standard_derivatives not listed as supported but get
Extension succeeded"); | |
| 130 } else { | |
| 131 testPassed("OES_standard_derivatives not listed as supported and get
Extension failed -- this is legal"); | |
| 132 } | |
| 133 } | |
| 134 } | |
| 135 | |
| 136 function runHintTestDisabled() { | |
| 137 debug("Testing FRAGMENT_SHADER_DERIVATIVE_HINT_OES with extension disabled")
; | |
| 138 | |
| 139 // Use the constant directly as we don't have the extension | |
| 140 var FRAGMENT_SHADER_DERIVATIVE_HINT_OES = 0x8B8B; | |
| 141 | |
| 142 gl.getParameter(FRAGMENT_SHADER_DERIVATIVE_HINT_OES); | |
| 143 glErrorShouldBe(gl, gl.INVALID_ENUM, "FRAGMENT_SHADER_DERIVATIVE_HINT_OES sh
ould not be queryable if extension is disabled"); | |
| 144 | |
| 145 gl.hint(FRAGMENT_SHADER_DERIVATIVE_HINT_OES, gl.DONT_CARE); | |
| 146 glErrorShouldBe(gl, gl.INVALID_ENUM, "hint should not accept FRAGMENT_SHADER
_DERIVATIVE_HINT_OES if extension is disabled"); | |
| 147 } | |
| 148 | |
| 149 function runHintTestEnabled() { | |
| 150 debug("Testing FRAGMENT_SHADER_DERIVATIVE_HINT_OES with extension enabled"); | |
| 151 | |
| 152 shouldBe("ext.FRAGMENT_SHADER_DERIVATIVE_HINT_OES", "0x8B8B"); | |
| 153 | |
| 154 gl.getParameter(ext.FRAGMENT_SHADER_DERIVATIVE_HINT_OES); | |
| 155 glErrorShouldBe(gl, gl.NO_ERROR, "FRAGMENT_SHADER_DERIVATIVE_HINT_OES query
should succeed if extension is enabled"); | |
| 156 | |
| 157 // Default value is DONT_CARE | |
| 158 if (gl.getParameter(ext.FRAGMENT_SHADER_DERIVATIVE_HINT_OES) == gl.DONT_CARE
) { | |
| 159 testPassed("Default value of FRAGMENT_SHADER_DERIVATIVE_HINT_OES is DONT
_CARE"); | |
| 160 } else { | |
| 161 testFailed("Default value of FRAGMENT_SHADER_DERIVATIVE_HINT_OES is not
DONT_CARE"); | |
| 162 } | |
| 163 | |
| 164 // Ensure that we can set the target | |
| 165 gl.hint(ext.FRAGMENT_SHADER_DERIVATIVE_HINT_OES, gl.DONT_CARE); | |
| 166 glErrorShouldBe(gl, gl.NO_ERROR, "hint should accept FRAGMENT_SHADER_DERIVAT
IVE_HINT_OES"); | |
| 167 | |
| 168 // Test all the hint modes | |
| 169 var validModes = ["FASTEST", "NICEST", "DONT_CARE"]; | |
| 170 var anyFailed = false; | |
| 171 for (var n = 0; n < validModes.length; n++) { | |
| 172 var mode = validModes[n]; | |
| 173 gl.hint(ext.FRAGMENT_SHADER_DERIVATIVE_HINT_OES, gl[mode]); | |
| 174 if (gl.getParameter(ext.FRAGMENT_SHADER_DERIVATIVE_HINT_OES) != gl[mode]
) { | |
| 175 testFailed("Round-trip of hint()/getParameter() failed on mode " + m
ode); | |
| 176 anyFailed = true; | |
| 177 } | |
| 178 } | |
| 179 if (!anyFailed) { | |
| 180 testPassed("Round-trip of hint()/getParameter() with all supported modes
"); | |
| 181 } | |
| 182 } | |
| 183 | |
| 184 function runShaderTests(extensionEnabled) { | |
| 185 debug("Testing various shader compiles with extension " + (extensionEnabled
? "enabled" : "disabled")); | |
| 186 | |
| 187 // Expect the macro shader to succeed ONLY if enabled | |
| 188 var macroFragmentShader = wtu.loadShaderFromScript(gl, "macroFragmentShader"
); | |
| 189 if (extensionEnabled) { | |
| 190 if (macroFragmentShader) { | |
| 191 // Expected result | |
| 192 testPassed("GL_OES_standard_derivatives defined in shaders when exte
nsion is enabled"); | |
| 193 } else { | |
| 194 testFailed("GL_OES_standard_derivatives not defined in shaders when
extension is enabled"); | |
| 195 } | |
| 196 } else { | |
| 197 if (macroFragmentShader) { | |
| 198 testFailed("GL_OES_standard_derivatives defined in shaders when exte
nsion is disabled"); | |
| 199 } else { | |
| 200 testPassed("GL_OES_standard_derivatives not defined in shaders when
extension disabled"); | |
| 201 } | |
| 202 } | |
| 203 | |
| 204 // Always expect the shader missing the #pragma to fail (whether enabled or
not) | |
| 205 var missingPragmaFragmentShader = wtu.loadShaderFromScript(gl, "missingPragm
aFragmentShader"); | |
| 206 if (missingPragmaFragmentShader) { | |
| 207 testFailed("Shader built-ins allowed without #extension pragma"); | |
| 208 } else { | |
| 209 testPassed("Shader built-ins disallowed without #extension pragma"); | |
| 210 } | |
| 211 | |
| 212 // Try to compile a shader using the built-ins that should only succeed if e
nabled | |
| 213 var testFragmentShader = wtu.loadShaderFromScript(gl, "testFragmentShader"); | |
| 214 if (extensionEnabled) { | |
| 215 if (testFragmentShader) { | |
| 216 testPassed("Shader built-ins compiled successfully when extension en
abled"); | |
| 217 } else { | |
| 218 testFailed("Shader built-ins failed to compile when extension enable
d"); | |
| 219 } | |
| 220 } else { | |
| 221 if (testFragmentShader) { | |
| 222 testFailed("Shader built-ins compiled successfully when extension di
sabled"); | |
| 223 } else { | |
| 224 testPassed("Shader built-ins failed to compile when extension disabl
ed"); | |
| 225 } | |
| 226 } | |
| 227 } | |
| 228 | |
| 229 function runOutputTests() { | |
| 230 // This tests does several draws with various values of z. | |
| 231 // The output of the fragment shader is: | |
| 232 // [dFdx(z), dFdy(z), fwidth(z), 1.0] | |
| 233 // The expected math: (note the conversion to uint8) | |
| 234 // canvas.width = canvas.height = 50 | |
| 235 // dFdx = totalChange.x / canvas.width = 0.5 / 50.0 = 0.01 | |
| 236 // dFdy = totalChange.y / canvas.height = 0.5 / 50.0 = 0.01 | |
| 237 // fw = abs(dFdx + dFdy) = 0.01 + 0.01 = 0.02 | |
| 238 // r = floor(dFdx * 255) = 3 | |
| 239 // g = floor(dFdy * 255) = 3 | |
| 240 // b = floor(fw * 255) = 5 | |
| 241 | |
| 242 var e = 2; // Amount of variance to allow in result pixels - may need to be
tweaked higher | |
| 243 | |
| 244 debug("Testing various draws for valid built-in function behavior"); | |
| 245 | |
| 246 canvas.width = 50; canvas.height = 50; | |
| 247 gl.viewport(0, 0, canvas.width, canvas.height); | |
| 248 gl.hint(ext.FRAGMENT_SHADER_DERIVATIVE_HINT_OES, gl.NICEST); | |
| 249 | |
| 250 var shaders = [ | |
| 251 wtu.loadShaderFromScript(gl, "outputVertexShader"), | |
| 252 wtu.loadShaderFromScript(gl, "outputFragmentShader") | |
| 253 ]; | |
| 254 var program = wtu.setupProgram(gl, shaders, ['vPosition', 'texCoord0'], [0,
1]); | |
| 255 var quadParameters = wtu.setupUnitQuad(gl, 0, 1); | |
| 256 | |
| 257 function readLocation(x, y) { | |
| 258 var pixels = new Uint8Array(1 * 1 * 4); | |
| 259 var px = Math.floor(x * canvas.width); | |
| 260 var py = Math.floor(y * canvas.height); | |
| 261 gl.readPixels(px, py, 1, 1, gl.RGBA, gl.UNSIGNED_BYTE, pixels); | |
| 262 return pixels; | |
| 263 }; | |
| 264 function toString(arr) { | |
| 265 var s = "["; | |
| 266 for (var n = 0; n < arr.length; n++) { | |
| 267 s += arr[n]; | |
| 268 if (n < arr.length - 1) { | |
| 269 s += ", "; | |
| 270 } | |
| 271 } | |
| 272 return s + "]"; | |
| 273 }; | |
| 274 function expectResult(target, successMessage, failureMessage) { | |
| 275 var locations = [ | |
| 276 readLocation(0.1, 0.1), | |
| 277 readLocation(0.9, 0.1), | |
| 278 readLocation(0.1, 0.9), | |
| 279 readLocation(0.9, 0.9), | |
| 280 readLocation(0.5, 0.5) | |
| 281 ]; | |
| 282 var anyDiffer = false; | |
| 283 for (var n = 0; n < locations.length; n++) { | |
| 284 var source = locations[n]; | |
| 285 for (var m = 0; m < 4; m++) { | |
| 286 if (Math.abs(source[m] - target[m]) > e) { | |
| 287 anyDiffer = true; | |
| 288 testFailed(failureMessage + "; should be " + toString(target
) + ", was " + toString(source)); | |
| 289 break; | |
| 290 } | |
| 291 } | |
| 292 } | |
| 293 if (!anyDiffer) { | |
| 294 testPassed(successMessage); | |
| 295 } | |
| 296 }; | |
| 297 | |
| 298 function setupBuffers(tl, tr, bl, br) { | |
| 299 gl.bindBuffer(gl.ARRAY_BUFFER, quadParameters[0]); | |
| 300 gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([ | |
| 301 1.0, 1.0, tr, | |
| 302 -1.0, 1.0, tl, | |
| 303 -1.0, -1.0, bl, | |
| 304 1.0, 1.0, tr, | |
| 305 -1.0, -1.0, bl, | |
| 306 1.0, -1.0, br]), gl.STATIC_DRAW); | |
| 307 }; | |
| 308 | |
| 309 // Draw 1: (no variation) | |
| 310 setupBuffers(0.0, 0.0, 0.0, 0.0); | |
| 311 wtu.drawQuad(gl); | |
| 312 expectResult([0, 0, 0, 255], | |
| 313 "Draw 1 (no variation) returned the correct data", | |
| 314 "Draw 1 (no variation) returned incorrect data"); | |
| 315 | |
| 316 // Draw 2: (variation in x) | |
| 317 setupBuffers(1.0, 0.0, 1.0, 0.0); | |
| 318 wtu.drawQuad(gl); | |
| 319 expectResult([5, 0, 5, 255], | |
| 320 "Draw 2 (variation in x) returned the correct data", | |
| 321 "Draw 2 (variation in x) returned incorrect data"); | |
| 322 | |
| 323 // Draw 3: (variation in y) | |
| 324 setupBuffers(1.0, 1.0, 0.0, 0.0); | |
| 325 wtu.drawQuad(gl); | |
| 326 expectResult([0, 5, 5, 255], | |
| 327 "Draw 3 (variation in y) returned the correct data", | |
| 328 "Draw 3 (variation in y) returned incorrect data"); | |
| 329 | |
| 330 // Draw 4: (variation in x & y) | |
| 331 setupBuffers(1.0, 0.5, 0.5, 0.0); | |
| 332 wtu.drawQuad(gl); | |
| 333 expectResult([3, 3, 5, 255], | |
| 334 "Draw 4 (variation in x & y) returned the correct data", | |
| 335 "Draw 4 (variation in x & y) returned incorrect data"); | |
| 336 | |
| 337 } | |
| 338 | |
| 339 function attemptToForceGC() | |
| 340 { | |
| 341 var holderArray = []; | |
| 342 var tempArray; | |
| 343 window.tempArray = holderArray; | |
| 344 for (var i = 0; i < 12; ++i) { | |
| 345 tempArray = []; | |
| 346 for (var j = 0; j < 1024 * 1024; ++j) { | |
| 347 tempArray.push(0); | |
| 348 } | |
| 349 holderArray.push(tempArray); | |
| 350 } | |
| 351 window.tempArray = null; | |
| 352 } | |
| 353 | |
| 354 function runUniqueObjectTest() | |
| 355 { | |
| 356 debug("Testing that getExtension() returns the same object each time"); | |
| 357 gl.getExtension("OES_standard_derivatives").myProperty = 2; | |
| 358 if (window.GCController) { | |
| 359 window.GCController.collect(); | |
| 360 } else if (window.opera && window.opera.collect) { | |
| 361 window.opera.collect(); | |
| 362 } else { | |
| 363 attemptToForceGC(); | |
| 364 } | |
| 365 shouldBe('gl.getExtension("OES_standard_derivatives").myProperty', '2'); | |
| 366 } | |
| 367 | |
| 368 | |
| 369 debug(""); | |
| 370 successfullyParsed = true; | |
| 371 </script> | |
| 372 <script src="../../resources/js-test-post.js"></script> | |
| 373 | |
| 374 </body> | |
| 375 </html> | |
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Chromium Code Reviews
Issue 9360034:
Remove everthing except conformance tests in the deps/third_party/webgl (Closed)
Base URL: svn://chrome-svn/chrome/trunk/deps/