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Unified Diff: conformance/extensions/oes-standard-derivatives.html

Issue 8342021: Add webgl conformance tests r15841. (Closed) Base URL: svn://chrome-svn/chrome/trunk/deps/third_party/webgl/sdk/tests/
Patch Set: Created 9 years, 2 months ago
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Index: conformance/extensions/oes-standard-derivatives.html
===================================================================
--- conformance/extensions/oes-standard-derivatives.html (revision 0)
+++ conformance/extensions/oes-standard-derivatives.html (revision 0)
@@ -0,0 +1,375 @@
+<!--
+Copyright (c) 2011 The Chromium Authors. All rights reserved.
+Use of this source code is governed by a BSD-style license that can be
+found in the LICENSE file.
+ -->
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>WebGL OES_standard_derivatives Conformance Tests</title>
+<link rel="stylesheet" href="../../resources/js-test-style.css"/>
+<script src="../../resources/desktop-gl-constants.js" type="text/javascript"></script>
+<script src="../../resources/js-test-pre.js"></script>
+<script src="../resources/webgl-test.js"></script>
+<script src="../resources/webgl-test-utils.js"></script>
+</head>
+<body>
+<div id="description"></div>
+<canvas id="canvas" style="width: 50px; height: 50px;"> </canvas>
+<div id="console"></div>
+<!-- Shaders for testing standard derivatives -->
+
+<!-- Shader omitting the required #extension pragma -->
+<script id="missingPragmaFragmentShader" type="x-shader/x-fragment">
+precision mediump float;
+varying vec2 texCoord;
+void main() {
+ float dx = dFdx(texCoord.x);
+ float dy = dFdy(texCoord.y);
+ float w = fwidth(texCoord.x);
+ gl_FragColor = vec4(dx, dy, w, 1.0);
+}
+</script>
+
+<!-- Shader to test macro definition -->
+<script id="macroFragmentShader" type="x-shader/x-fragment">
+precision mediump float;
+void main() {
+#ifdef GL_OES_standard_derivatives
+ gl_FragColor = vec4(0.0, 0.0, 0.0, 0.0);
+#else
+ // Error expected
+ #error no GL_OES_standard_derivatives;
+#endif
+}
+</script>
+
+<!-- Shader with required #extension pragma -->
+<script id="testFragmentShader" type="x-shader/x-fragment">
+#extension GL_OES_standard_derivatives : enable
+precision mediump float;
+varying vec2 texCoord;
+void main() {
+ float dx = dFdx(texCoord.x);
+ float dy = dFdy(texCoord.y);
+ float w = fwidth(texCoord.x);
+ gl_FragColor = vec4(dx, dy, w, 1.0);
+}
+</script>
+
+<!-- Shaders to test output -->
+<script id="outputVertexShader" type="x-shader/x-vertex">
+attribute vec4 vPosition;
+varying vec4 position;
+void main() {
+ position = vPosition;
+ gl_Position = vPosition;
+}
+</script>
+<script id="outputFragmentShader" type="x-shader/x-fragment">
+#extension GL_OES_standard_derivatives : enable
+precision mediump float;
+varying vec4 position;
+void main() {
+ float dzdx = dFdx(position.z);
+ float dzdy = dFdy(position.z);
+ float fw = fwidth(position.z);
+ gl_FragColor = vec4(abs(dzdx), abs(dzdy), fw, 1.0);
+}
+</script>
+
+<script>
+description("This test verifies the functionality of the OES_standard_derivatives extension, if it is available.");
+
+debug("");
+
+var wtu = WebGLTestUtils;
+var canvas = document.getElementById("canvas");
+var gl = create3DContext(canvas);
+var ext = null;
+
+if (!gl) {
+ testFailed("WebGL context does not exist");
+} else {
+ testPassed("WebGL context exists");
+
+ // Run tests with extension disabled
+ runHintTestDisabled();
+ runShaderTests(false);
+
+ // Query the extension and store globally so shouldBe can access it
+ ext = gl.getExtension("OES_standard_derivatives");
+ if (!ext) {
+ testPassed("No OES_standard_derivatives support -- this is legal");
+
+ runSupportedTest(false);
+ } else {
+ testPassed("Successfully enabled OES_standard_derivatives extension");
+
+ runSupportedTest(true);
+
+ runHintTestEnabled();
+ runShaderTests(true);
+ runOutputTests();
+ runUniqueObjectTest();
+ }
+}
+
+function runSupportedTest(extensionEnabled) {
+ var supported = gl.getSupportedExtensions();
+ if (supported.indexOf("OES_standard_derivatives") >= 0) {
+ if (extensionEnabled) {
+ testPassed("OES_standard_derivatives listed as supported and getExtension succeeded");
+ } else {
+ testFailed("OES_standard_derivatives listed as supported but getExtension failed");
+ }
+ } else {
+ if (extensionEnabled) {
+ testFailed("OES_standard_derivatives not listed as supported but getExtension succeeded");
+ } else {
+ testPassed("OES_standard_derivatives not listed as supported and getExtension failed -- this is legal");
+ }
+ }
+}
+
+function runHintTestDisabled() {
+ debug("Testing FRAGMENT_SHADER_DERIVATIVE_HINT_OES with extension disabled");
+
+ // Use the constant directly as we don't have the extension
+ var FRAGMENT_SHADER_DERIVATIVE_HINT_OES = 0x8B8B;
+
+ gl.getParameter(FRAGMENT_SHADER_DERIVATIVE_HINT_OES);
+ glErrorShouldBe(gl, gl.INVALID_ENUM, "FRAGMENT_SHADER_DERIVATIVE_HINT_OES should not be queryable if extension is disabled");
+
+ gl.hint(FRAGMENT_SHADER_DERIVATIVE_HINT_OES, gl.DONT_CARE);
+ glErrorShouldBe(gl, gl.INVALID_ENUM, "hint should not accept FRAGMENT_SHADER_DERIVATIVE_HINT_OES if extension is disabled");
+}
+
+function runHintTestEnabled() {
+ debug("Testing FRAGMENT_SHADER_DERIVATIVE_HINT_OES with extension enabled");
+
+ shouldBe("ext.FRAGMENT_SHADER_DERIVATIVE_HINT_OES", "0x8B8B");
+
+ gl.getParameter(ext.FRAGMENT_SHADER_DERIVATIVE_HINT_OES);
+ glErrorShouldBe(gl, gl.NO_ERROR, "FRAGMENT_SHADER_DERIVATIVE_HINT_OES query should succeed if extension is enabled");
+
+ // Default value is DONT_CARE
+ if (gl.getParameter(ext.FRAGMENT_SHADER_DERIVATIVE_HINT_OES) == gl.DONT_CARE) {
+ testPassed("Default value of FRAGMENT_SHADER_DERIVATIVE_HINT_OES is DONT_CARE");
+ } else {
+ testFailed("Default value of FRAGMENT_SHADER_DERIVATIVE_HINT_OES is not DONT_CARE");
+ }
+
+ // Ensure that we can set the target
+ gl.hint(ext.FRAGMENT_SHADER_DERIVATIVE_HINT_OES, gl.DONT_CARE);
+ glErrorShouldBe(gl, gl.NO_ERROR, "hint should accept FRAGMENT_SHADER_DERIVATIVE_HINT_OES");
+
+ // Test all the hint modes
+ var validModes = ["FASTEST", "NICEST", "DONT_CARE"];
+ var anyFailed = false;
+ for (var n = 0; n < validModes.length; n++) {
+ var mode = validModes[n];
+ gl.hint(ext.FRAGMENT_SHADER_DERIVATIVE_HINT_OES, gl[mode]);
+ if (gl.getParameter(ext.FRAGMENT_SHADER_DERIVATIVE_HINT_OES) != gl[mode]) {
+ testFailed("Round-trip of hint()/getParameter() failed on mode " + mode);
+ anyFailed = true;
+ }
+ }
+ if (!anyFailed) {
+ testPassed("Round-trip of hint()/getParameter() with all supported modes");
+ }
+}
+
+function runShaderTests(extensionEnabled) {
+ debug("Testing various shader compiles with extension " + (extensionEnabled ? "enabled" : "disabled"));
+
+ // Expect the macro shader to succeed ONLY if enabled
+ var macroFragmentShader = wtu.loadShaderFromScript(gl, "macroFragmentShader");
+ if (extensionEnabled) {
+ if (macroFragmentShader) {
+ // Expected result
+ testPassed("GL_OES_standard_derivatives defined in shaders when extension is enabled");
+ } else {
+ testFailed("GL_OES_standard_derivatives not defined in shaders when extension is enabled");
+ }
+ } else {
+ if (macroFragmentShader) {
+ testFailed("GL_OES_standard_derivatives defined in shaders when extension is disabled");
+ } else {
+ testPassed("GL_OES_standard_derivatives not defined in shaders when extension disabled");
+ }
+ }
+
+ // Always expect the shader missing the #pragma to fail (whether enabled or not)
+ var missingPragmaFragmentShader = wtu.loadShaderFromScript(gl, "missingPragmaFragmentShader");
+ if (missingPragmaFragmentShader) {
+ testFailed("Shader built-ins allowed without #extension pragma");
+ } else {
+ testPassed("Shader built-ins disallowed without #extension pragma");
+ }
+
+ // Try to compile a shader using the built-ins that should only succeed if enabled
+ var testFragmentShader = wtu.loadShaderFromScript(gl, "testFragmentShader");
+ if (extensionEnabled) {
+ if (testFragmentShader) {
+ testPassed("Shader built-ins compiled successfully when extension enabled");
+ } else {
+ testFailed("Shader built-ins failed to compile when extension enabled");
+ }
+ } else {
+ if (testFragmentShader) {
+ testFailed("Shader built-ins compiled successfully when extension disabled");
+ } else {
+ testPassed("Shader built-ins failed to compile when extension disabled");
+ }
+ }
+}
+
+function runOutputTests() {
+ // This tests does several draws with various values of z.
+ // The output of the fragment shader is:
+ // [dFdx(z), dFdy(z), fwidth(z), 1.0]
+ // The expected math: (note the conversion to uint8)
+ // canvas.width = canvas.height = 50
+ // dFdx = totalChange.x / canvas.width = 0.5 / 50.0 = 0.01
+ // dFdy = totalChange.y / canvas.height = 0.5 / 50.0 = 0.01
+ // fw = abs(dFdx + dFdy) = 0.01 + 0.01 = 0.02
+ // r = floor(dFdx * 255) = 3
+ // g = floor(dFdy * 255) = 3
+ // b = floor(fw * 255) = 5
+
+ var e = 2; // Amount of variance to allow in result pixels - may need to be tweaked higher
+
+ debug("Testing various draws for valid built-in function behavior");
+
+ canvas.width = 50; canvas.height = 50;
+ gl.viewport(0, 0, canvas.width, canvas.height);
+ gl.hint(ext.FRAGMENT_SHADER_DERIVATIVE_HINT_OES, gl.NICEST);
+
+ var shaders = [
+ wtu.loadShaderFromScript(gl, "outputVertexShader"),
+ wtu.loadShaderFromScript(gl, "outputFragmentShader")
+ ];
+ var program = wtu.setupProgram(gl, shaders, ['vPosition', 'texCoord0'], [0, 1]);
+ var quadParameters = wtu.setupUnitQuad(gl, 0, 1);
+
+ function readLocation(x, y) {
+ var pixels = new Uint8Array(1 * 1 * 4);
+ var px = Math.floor(x * canvas.width);
+ var py = Math.floor(y * canvas.height);
+ gl.readPixels(px, py, 1, 1, gl.RGBA, gl.UNSIGNED_BYTE, pixels);
+ return pixels;
+ };
+ function toString(arr) {
+ var s = "[";
+ for (var n = 0; n < arr.length; n++) {
+ s += arr[n];
+ if (n < arr.length - 1) {
+ s += ", ";
+ }
+ }
+ return s + "]";
+ };
+ function expectResult(target, successMessage, failureMessage) {
+ var locations = [
+ readLocation(0.1, 0.1),
+ readLocation(0.9, 0.1),
+ readLocation(0.1, 0.9),
+ readLocation(0.9, 0.9),
+ readLocation(0.5, 0.5)
+ ];
+ var anyDiffer = false;
+ for (var n = 0; n < locations.length; n++) {
+ var source = locations[n];
+ for (var m = 0; m < 4; m++) {
+ if (Math.abs(source[m] - target[m]) > e) {
+ anyDiffer = true;
+ testFailed(failureMessage + "; should be " + toString(target) + ", was " + toString(source));
+ break;
+ }
+ }
+ }
+ if (!anyDiffer) {
+ testPassed(successMessage);
+ }
+ };
+
+ function setupBuffers(tl, tr, bl, br) {
+ gl.bindBuffer(gl.ARRAY_BUFFER, quadParameters[0]);
+ gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([
+ 1.0, 1.0, tr,
+ -1.0, 1.0, tl,
+ -1.0, -1.0, bl,
+ 1.0, 1.0, tr,
+ -1.0, -1.0, bl,
+ 1.0, -1.0, br]), gl.STATIC_DRAW);
+ };
+
+ // Draw 1: (no variation)
+ setupBuffers(0.0, 0.0, 0.0, 0.0);
+ wtu.drawQuad(gl);
+ expectResult([0, 0, 0, 255],
+ "Draw 1 (no variation) returned the correct data",
+ "Draw 1 (no variation) returned incorrect data");
+
+ // Draw 2: (variation in x)
+ setupBuffers(1.0, 0.0, 1.0, 0.0);
+ wtu.drawQuad(gl);
+ expectResult([5, 0, 5, 255],
+ "Draw 2 (variation in x) returned the correct data",
+ "Draw 2 (variation in x) returned incorrect data");
+
+ // Draw 3: (variation in y)
+ setupBuffers(1.0, 1.0, 0.0, 0.0);
+ wtu.drawQuad(gl);
+ expectResult([0, 5, 5, 255],
+ "Draw 3 (variation in y) returned the correct data",
+ "Draw 3 (variation in y) returned incorrect data");
+
+ // Draw 4: (variation in x & y)
+ setupBuffers(1.0, 0.5, 0.5, 0.0);
+ wtu.drawQuad(gl);
+ expectResult([3, 3, 5, 255],
+ "Draw 4 (variation in x & y) returned the correct data",
+ "Draw 4 (variation in x & y) returned incorrect data");
+
+}
+
+function attemptToForceGC()
+{
+ var holderArray = [];
+ var tempArray;
+ window.tempArray = holderArray;
+ for (var i = 0; i < 12; ++i) {
+ tempArray = [];
+ for (var j = 0; j < 1024 * 1024; ++j) {
+ tempArray.push(0);
+ }
+ holderArray.push(tempArray);
+ }
+ window.tempArray = null;
+}
+
+function runUniqueObjectTest()
+{
+ debug("Testing that getExtension() returns the same object each time");
+ gl.getExtension("OES_standard_derivatives").myProperty = 2;
+ if (window.GCController) {
+ window.GCController.collect();
+ } else if (window.opera && window.opera.collect) {
+ window.opera.collect();
+ } else {
+ attemptToForceGC();
+ }
+ shouldBe('gl.getExtension("OES_standard_derivatives").myProperty', '2');
+}
+
+
+debug("");
+successfullyParsed = true;
+</script>
+<script src="../../resources/js-test-post.js"></script>
+
+</body>
+</html>
Property changes on: conformance/extensions/oes-standard-derivatives.html
___________________________________________________________________
Added: svn:eol-style
+ LF
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