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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 PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" | |
| 7 "http://www.w3.org/TR/html4/loose.dtd"> | |
| 8 <html> | |
| 9 <head> | |
| 10 <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> | |
| 11 <title>WebGL OES_standard_derivatives Conformance Tests</title> | |
| 12 <link rel="stylesheet" href="../resources/js-test-style.css"/> | |
| 13 <script src="../resources/desktop-gl-constants.js" type="text/javascript"></scri
pt> | |
| 14 <script src="../resources/js-test-pre.js"></script> | |
| 15 <script src="resources/webgl-test.js"></script> | |
| 16 <script src="resources/webgl-test-utils.js"></script> | |
| 17 </head> | |
| 18 <body> | |
| 19 <div id="description"></div> | |
| 20 <canvas id="canvas" style="width: 50px; height: 50px;"> </canvas> | |
| 21 <div id="console"></div> | |
| 22 <!-- Shaders for testing standard derivatives --> | |
| 23 | |
| 24 <!-- Shader omitting the required #extension pragma --> | |
| 25 <script id="missingPragmaFragmentShader" type="x-shader/x-fragment"> | |
| 26 precision mediump float; | |
| 27 varying vec2 texCoord; | |
| 28 void main() { | |
| 29 float dx = dFdx(texCoord.x); | |
| 30 float dy = dFdy(texCoord.y); | |
| 31 float w = fwidth(texCoord.x); | |
| 32 gl_FragColor = vec4(dx, dy, w, 1.0); | |
| 33 } | |
| 34 </script> | |
| 35 | |
| 36 <!-- Shader to test macro definition --> | |
| 37 <script id="macroFragmentShader" type="x-shader/x-fragment"> | |
| 38 precision mediump float; | |
| 39 void main() { | |
| 40 #ifdef GL_OES_standard_derivatives | |
| 41 gl_FragColor = vec4(0.0, 0.0, 0.0, 0.0); | |
| 42 #else | |
| 43 // Error expected | |
| 44 #error no GL_OES_standard_derivatives; | |
| 45 #endif | |
| 46 } | |
| 47 </script> | |
| 48 | |
| 49 <!-- Shader with required #extension pragma --> | |
| 50 <script id="testFragmentShader" type="x-shader/x-fragment"> | |
| 51 #extension GL_OES_standard_derivatives : enable | |
| 52 precision mediump float; | |
| 53 varying vec2 texCoord; | |
| 54 void main() { | |
| 55 float dx = dFdx(texCoord.x); | |
| 56 float dy = dFdy(texCoord.y); | |
| 57 float w = fwidth(texCoord.x); | |
| 58 gl_FragColor = vec4(dx, dy, w, 1.0); | |
| 59 } | |
| 60 </script> | |
| 61 | |
| 62 <!-- Shaders to test output --> | |
| 63 <script id="outputVertexShader" type="x-shader/x-vertex"> | |
| 64 attribute vec4 vPosition; | |
| 65 varying vec4 position; | |
| 66 void main() { | |
| 67 position = vPosition; | |
| 68 gl_Position = vPosition; | |
| 69 } | |
| 70 </script> | |
| 71 <script id="outputFragmentShader" type="x-shader/x-fragment"> | |
| 72 #extension GL_OES_standard_derivatives : enable | |
| 73 precision highp float; | |
| 74 varying vec4 position; | |
| 75 void main() { | |
| 76 float dzdx = dFdx(position.z); | |
| 77 float dzdy = dFdy(position.z); | |
| 78 float fw = fwidth(position.z); | |
| 79 gl_FragColor = vec4(abs(dzdx), abs(dzdy), fw, 1.0); | |
| 80 } | |
| 81 </script> | |
| 82 | |
| 83 <script> | |
| 84 description("This test verifies the functionality of the OES_standard_derivative
s extension, if it is available."); | |
| 85 | |
| 86 debug(""); | |
| 87 | |
| 88 var wtu = WebGLTestUtils; | |
| 89 var canvas = document.getElementById("canvas"); | |
| 90 var gl = create3DContext(canvas); | |
| 91 var ext = null; | |
| 92 | |
| 93 if (!gl) { | |
| 94 testFailed("WebGL context does not exist"); | |
| 95 } else { | |
| 96 testPassed("WebGL context exists"); | |
| 97 | |
| 98 // Run tests with extension disabled | |
| 99 runHintTestDisabled(); | |
| 100 runShaderTests(false); | |
| 101 | |
| 102 // Query the extension and store globally so shouldBe can access it | |
| 103 ext = gl.getExtension("OES_standard_derivatives"); | |
| 104 if (!ext) { | |
| 105 testPassed("No OES_standard_derivatives support -- this is legal"); | |
| 106 | |
| 107 runSupportedTest(false); | |
| 108 } else { | |
| 109 testPassed("Successfully enabled OES_standard_derivatives extension"); | |
| 110 | |
| 111 runSupportedTest(true); | |
| 112 | |
| 113 runHintTestEnabled(); | |
| 114 runShaderTests(true); | |
| 115 runOutputTests(); | |
| 116 runUniqueObjectTest(); | |
| 117 } | |
| 118 } | |
| 119 | |
| 120 function runSupportedTest(extensionEnabled) { | |
| 121 var supported = gl.getSupportedExtensions(); | |
| 122 if (supported.indexOf("OES_standard_derivatives") >= 0) { | |
| 123 if (extensionEnabled) { | |
| 124 testPassed("OES_standard_derivatives listed as supported and getExte
nsion succeeded"); | |
| 125 } else { | |
| 126 testFailed("OES_standard_derivatives listed as supported but getExte
nsion failed"); | |
| 127 } | |
| 128 } else { | |
| 129 if (extensionEnabled) { | |
| 130 testFailed("OES_standard_derivatives not listed as supported but get
Extension succeeded"); | |
| 131 } else { | |
| 132 testPassed("OES_standard_derivatives not listed as supported and get
Extension failed -- this is legal"); | |
| 133 } | |
| 134 } | |
| 135 } | |
| 136 | |
| 137 function runHintTestDisabled() { | |
| 138 debug("Testing FRAGMENT_SHADER_DERIVATIVE_HINT_OES with extension disabled")
; | |
| 139 | |
| 140 // Use the constant directly as we don't have the extension | |
| 141 var FRAGMENT_SHADER_DERIVATIVE_HINT_OES = 0x8B8B; | |
| 142 | |
| 143 gl.getParameter(FRAGMENT_SHADER_DERIVATIVE_HINT_OES); | |
| 144 glErrorShouldBe(gl, gl.INVALID_ENUM, "FRAGMENT_SHADER_DERIVATIVE_HINT_OES sh
ould not be queryable if extension is disabled"); | |
| 145 | |
| 146 gl.hint(FRAGMENT_SHADER_DERIVATIVE_HINT_OES, gl.DONT_CARE); | |
| 147 glErrorShouldBe(gl, gl.INVALID_ENUM, "hint should not accept FRAGMENT_SHADER
_DERIVATIVE_HINT_OES if extension is disabled"); | |
| 148 } | |
| 149 | |
| 150 function runHintTestEnabled() { | |
| 151 debug("Testing FRAGMENT_SHADER_DERIVATIVE_HINT_OES with extension enabled"); | |
| 152 | |
| 153 shouldBe("ext.FRAGMENT_SHADER_DERIVATIVE_HINT_OES", "0x8B8B"); | |
| 154 | |
| 155 gl.getParameter(ext.FRAGMENT_SHADER_DERIVATIVE_HINT_OES); | |
| 156 glErrorShouldBe(gl, gl.NO_ERROR, "FRAGMENT_SHADER_DERIVATIVE_HINT_OES query
should succeed if extension is enabled"); | |
| 157 | |
| 158 // Default value is DONT_CARE | |
| 159 if (gl.getParameter(ext.FRAGMENT_SHADER_DERIVATIVE_HINT_OES) == gl.DONT_CARE
) { | |
| 160 testPassed("Default value of FRAGMENT_SHADER_DERIVATIVE_HINT_OES is DONT
_CARE"); | |
| 161 } else { | |
| 162 testFailed("Default value of FRAGMENT_SHADER_DERIVATIVE_HINT_OES is not
DONT_CARE"); | |
| 163 } | |
| 164 | |
| 165 // Ensure that we can set the target | |
| 166 gl.hint(ext.FRAGMENT_SHADER_DERIVATIVE_HINT_OES, gl.DONT_CARE); | |
| 167 glErrorShouldBe(gl, gl.NO_ERROR, "hint should accept FRAGMENT_SHADER_DERIVAT
IVE_HINT_OES"); | |
| 168 | |
| 169 // Test all the hint modes | |
| 170 var validModes = ["FASTEST", "NICEST", "DONT_CARE"]; | |
| 171 var anyFailed = false; | |
| 172 for (var n = 0; n < validModes.length; n++) { | |
| 173 var mode = validModes[n]; | |
| 174 gl.hint(ext.FRAGMENT_SHADER_DERIVATIVE_HINT_OES, gl[mode]); | |
| 175 if (gl.getParameter(ext.FRAGMENT_SHADER_DERIVATIVE_HINT_OES) != gl[mode]
) { | |
| 176 testFailed("Round-trip of hint()/getParameter() failed on mode " + m
ode); | |
| 177 anyFailed = true; | |
| 178 } | |
| 179 } | |
| 180 if (!anyFailed) { | |
| 181 testPassed("Round-trip of hint()/getParameter() with all supported modes
"); | |
| 182 } | |
| 183 } | |
| 184 | |
| 185 function runShaderTests(extensionEnabled) { | |
| 186 debug("Testing various shader compiles with extension " + (extensionEnabled
? "enabled" : "disabled")); | |
| 187 | |
| 188 // Expect the macro shader to succeed ONLY if enabled | |
| 189 var macroFragmentShader = wtu.loadShaderFromScript(gl, "macroFragmentShader"
); | |
| 190 if (extensionEnabled) { | |
| 191 if (macroFragmentShader) { | |
| 192 // Expected result | |
| 193 testPassed("GL_OES_standard_derivatives defined in shaders when exte
nsion is enabled"); | |
| 194 } else { | |
| 195 testFailed("GL_OES_standard_derivatives not defined in shaders when
extension is enabled"); | |
| 196 } | |
| 197 } else { | |
| 198 if (macroFragmentShader) { | |
| 199 testFailed("GL_OES_standard_derivatives defined in shaders when exte
nsion is disabled"); | |
| 200 } else { | |
| 201 testPassed("GL_OES_standard_derivatives not defined in shaders when
extension disabled"); | |
| 202 } | |
| 203 } | |
| 204 | |
| 205 // Always expect the shader missing the #pragma to fail (whether enabled or
not) | |
| 206 var missingPragmaFragmentShader = wtu.loadShaderFromScript(gl, "missingPragm
aFragmentShader"); | |
| 207 if (missingPragmaFragmentShader) { | |
| 208 testFailed("Shader built-ins allowed without #extension pragma"); | |
| 209 } else { | |
| 210 testPassed("Shader built-ins disallowed without #extension pragma"); | |
| 211 } | |
| 212 | |
| 213 // Try to compile a shader using the built-ins that should only succeed if e
nabled | |
| 214 var testFragmentShader = wtu.loadShaderFromScript(gl, "testFragmentShader"); | |
| 215 if (extensionEnabled) { | |
| 216 if (testFragmentShader) { | |
| 217 testPassed("Shader built-ins compiled successfully when extension en
abled"); | |
| 218 } else { | |
| 219 testFailed("Shader built-ins failed to compile when extension enable
d"); | |
| 220 } | |
| 221 } else { | |
| 222 if (testFragmentShader) { | |
| 223 testFailed("Shader built-ins compiled successfully when extension di
sabled"); | |
| 224 } else { | |
| 225 testPassed("Shader built-ins failed to compile when extension disabl
ed"); | |
| 226 } | |
| 227 } | |
| 228 } | |
| 229 | |
| 230 function runOutputTests() { | |
| 231 // This tests does several draws with various values of z. | |
| 232 // The output of the fragment shader is: | |
| 233 // [dFdx(z), dFdy(z), fwidth(z), 1.0] | |
| 234 // The expected math: (note the conversion to uint8) | |
| 235 // canvas.width = canvas.height = 50 | |
| 236 // dFdx = totalChange.x / canvas.width = 0.5 / 50.0 = 0.01 | |
| 237 // dFdy = totalChange.y / canvas.height = 0.5 / 50.0 = 0.01 | |
| 238 // fw = abs(dFdx + dFdy) = 0.01 + 0.01 = 0.02 | |
| 239 // r = floor(dFdx * 255) = 3 | |
| 240 // g = floor(dFdy * 255) = 3 | |
| 241 // b = floor(fw * 255) = 5 | |
| 242 | |
| 243 var e = 2; // Amount of variance to allow in result pixels - may need to be
tweaked higher | |
| 244 | |
| 245 debug("Testing various draws for valid built-in function behavior"); | |
| 246 | |
| 247 canvas.width = 50; canvas.height = 50; | |
| 248 gl.viewport(0, 0, canvas.width, canvas.height); | |
| 249 gl.hint(ext.FRAGMENT_SHADER_DERIVATIVE_HINT_OES, gl.NICEST); | |
| 250 | |
| 251 var shaders = [ | |
| 252 wtu.loadShaderFromScript(gl, "outputVertexShader"), | |
| 253 wtu.loadShaderFromScript(gl, "outputFragmentShader") | |
| 254 ]; | |
| 255 var program = wtu.setupProgram(gl, shaders, ['vPosition', 'texCoord0'], [0,
1]); | |
| 256 var quadParameters = wtu.setupUnitQuad(gl, 0, 1); | |
| 257 | |
| 258 function readLocation(x, y) { | |
| 259 var pixels = new Uint8Array(1 * 1 * 4); | |
| 260 var px = Math.floor(x * canvas.width); | |
| 261 var py = Math.floor(y * canvas.height); | |
| 262 gl.readPixels(px, py, 1, 1, gl.RGBA, gl.UNSIGNED_BYTE, pixels); | |
| 263 return pixels; | |
| 264 }; | |
| 265 function toString(arr) { | |
| 266 var s = "["; | |
| 267 for (var n = 0; n < arr.length; n++) { | |
| 268 s += arr[n]; | |
| 269 if (n < arr.length - 1) { | |
| 270 s += ", "; | |
| 271 } | |
| 272 } | |
| 273 return s + "]"; | |
| 274 }; | |
| 275 function expectResult(target, successMessage, failureMessage) { | |
| 276 var locations = [ | |
| 277 readLocation(0.1, 0.1), | |
| 278 readLocation(0.9, 0.1), | |
| 279 readLocation(0.1, 0.9), | |
| 280 readLocation(0.9, 0.9), | |
| 281 readLocation(0.5, 0.5) | |
| 282 ]; | |
| 283 var anyDiffer = false; | |
| 284 for (var n = 0; n < locations.length; n++) { | |
| 285 var source = locations[n]; | |
| 286 for (var m = 0; m < 4; m++) { | |
| 287 if (Math.abs(source[m] - target[m]) > e) { | |
| 288 anyDiffer = true; | |
| 289 testFailed(failureMessage + "; should be " + toString(target
) + ", was " + toString(source)); | |
| 290 break; | |
| 291 } | |
| 292 } | |
| 293 } | |
| 294 if (!anyDiffer) { | |
| 295 testPassed(successMessage); | |
| 296 } | |
| 297 }; | |
| 298 | |
| 299 function setupBuffers(tl, tr, bl, br) { | |
| 300 gl.bindBuffer(gl.ARRAY_BUFFER, quadParameters[0]); | |
| 301 gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([ | |
| 302 1.0, 1.0, tr, | |
| 303 -1.0, 1.0, tl, | |
| 304 -1.0, -1.0, bl, | |
| 305 1.0, 1.0, tr, | |
| 306 -1.0, -1.0, bl, | |
| 307 1.0, -1.0, br]), gl.STATIC_DRAW); | |
| 308 }; | |
| 309 | |
| 310 // Draw 1: (no variation) | |
| 311 setupBuffers(0.0, 0.0, 0.0, 0.0); | |
| 312 wtu.drawQuad(gl); | |
| 313 expectResult([0, 0, 0, 255], | |
| 314 "Draw 1 (no variation) returned the correct data", | |
| 315 "Draw 1 (no variation) returned incorrect data"); | |
| 316 | |
| 317 // Draw 2: (variation in x) | |
| 318 setupBuffers(1.0, 0.0, 1.0, 0.0); | |
| 319 wtu.drawQuad(gl); | |
| 320 expectResult([5, 0, 5, 255], | |
| 321 "Draw 2 (variation in x) returned the correct data", | |
| 322 "Draw 2 (variation in x) returned incorrect data"); | |
| 323 | |
| 324 // Draw 3: (variation in y) | |
| 325 setupBuffers(1.0, 1.0, 0.0, 0.0); | |
| 326 wtu.drawQuad(gl); | |
| 327 expectResult([0, 5, 5, 255], | |
| 328 "Draw 3 (variation in y) returned the correct data", | |
| 329 "Draw 3 (variation in y) returned incorrect data"); | |
| 330 | |
| 331 // Draw 4: (variation in x & y) | |
| 332 setupBuffers(1.0, 0.5, 0.5, 0.0); | |
| 333 wtu.drawQuad(gl); | |
| 334 expectResult([3, 3, 5, 255], | |
| 335 "Draw 4 (variation in x & y) returned the correct data", | |
| 336 "Draw 4 (variation in x & y) returned incorrect data"); | |
| 337 | |
| 338 } | |
| 339 | |
| 340 function attemptToForceGC() | |
| 341 { | |
| 342 var holderArray = []; | |
| 343 var tempArray; | |
| 344 window.tempArray = holderArray; | |
| 345 for (var i = 0; i < 12; ++i) { | |
| 346 tempArray = []; | |
| 347 for (var j = 0; j < 1024 * 1024; ++j) { | |
| 348 tempArray.push(0); | |
| 349 } | |
| 350 holderArray.push(tempArray); | |
| 351 } | |
| 352 window.tempArray = null; | |
| 353 } | |
| 354 | |
| 355 function runUniqueObjectTest() | |
| 356 { | |
| 357 debug("Testing that getExtension() returns the same object each time"); | |
| 358 gl.getExtension("OES_standard_derivatives").myProperty = 2; | |
| 359 if (window.GCController) { | |
| 360 window.GCController.collect(); | |
| 361 } else { | |
| 362 attemptToForceGC(); | |
| 363 } | |
| 364 shouldBe('gl.getExtension("OES_standard_derivatives").myProperty', '2'); | |
| 365 } | |
| 366 | |
| 367 | |
| 368 debug(""); | |
| 369 successfullyParsed = true; | |
| 370 </script> | |
| 371 <script src="../resources/js-test-post.js"></script> | |
| 372 <script> | |
| 373 </script> | |
| 374 | |
| 375 </body> | |
| 376 </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/