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a9825d42c5
This is the actual upgrade. The canonical URL for this test suite is https://cvs.khronos.org/svn/repos/registry/trunk/public/webgl/sdk/tests/
376 lines
13 KiB
HTML
376 lines
13 KiB
HTML
<!--
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Copyright (c) 2011 The Chromium Authors. All rights reserved.
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Use of this source code is governed by a BSD-style license that can be
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found in the LICENSE file.
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-->
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<title>WebGL OES_standard_derivatives Conformance Tests</title>
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<link rel="stylesheet" href="../resources/js-test-style.css"/>
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<script src="../resources/desktop-gl-constants.js" type="text/javascript"></script>
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<script src="../resources/js-test-pre.js"></script>
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<script src="resources/webgl-test.js"></script>
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<script src="resources/webgl-test-utils.js"></script>
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</head>
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<body>
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<div id="description"></div>
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<canvas id="canvas" style="width: 50px; height: 50px;"> </canvas>
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<div id="console"></div>
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<!-- Shaders for testing standard derivatives -->
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<!-- Shader omitting the required #extension pragma -->
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<script id="missingPragmaFragmentShader" type="x-shader/x-fragment">
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precision mediump float;
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varying vec2 texCoord;
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void main() {
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float dx = dFdx(texCoord.x);
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float dy = dFdy(texCoord.y);
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float w = fwidth(texCoord.x);
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gl_FragColor = vec4(dx, dy, w, 1.0);
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}
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</script>
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<!-- Shader to test macro definition -->
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<script id="macroFragmentShader" type="x-shader/x-fragment">
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precision mediump float;
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void main() {
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#ifdef GL_OES_standard_derivatives
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gl_FragColor = vec4(0.0, 0.0, 0.0, 0.0);
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#else
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// Error expected
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#error no GL_OES_standard_derivatives;
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#endif
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}
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</script>
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<!-- Shader with required #extension pragma -->
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<script id="testFragmentShader" type="x-shader/x-fragment">
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#extension GL_OES_standard_derivatives : enable
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precision mediump float;
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varying vec2 texCoord;
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void main() {
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float dx = dFdx(texCoord.x);
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float dy = dFdy(texCoord.y);
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float w = fwidth(texCoord.x);
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gl_FragColor = vec4(dx, dy, w, 1.0);
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}
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</script>
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<!-- Shaders to test output -->
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<script id="outputVertexShader" type="x-shader/x-vertex">
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attribute vec4 vPosition;
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varying vec4 position;
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void main() {
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position = vPosition;
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gl_Position = vPosition;
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}
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</script>
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<script id="outputFragmentShader" type="x-shader/x-fragment">
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#extension GL_OES_standard_derivatives : enable
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precision mediump float;
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varying vec4 position;
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void main() {
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float dzdx = dFdx(position.z);
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float dzdy = dFdy(position.z);
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float fw = fwidth(position.z);
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gl_FragColor = vec4(abs(dzdx), abs(dzdy), fw, 1.0);
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}
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</script>
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<script>
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description("This test verifies the functionality of the OES_standard_derivatives extension, if it is available.");
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debug("");
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var wtu = WebGLTestUtils;
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var canvas = document.getElementById("canvas");
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var gl = create3DContext(canvas);
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var ext = null;
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if (!gl) {
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testFailed("WebGL context does not exist");
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} else {
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testPassed("WebGL context exists");
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// Run tests with extension disabled
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runHintTestDisabled();
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runShaderTests(false);
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// Query the extension and store globally so shouldBe can access it
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ext = gl.getExtension("OES_standard_derivatives");
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if (!ext) {
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testPassed("No OES_standard_derivatives support -- this is legal");
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runSupportedTest(false);
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} else {
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testPassed("Successfully enabled OES_standard_derivatives extension");
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runSupportedTest(true);
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runHintTestEnabled();
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runShaderTests(true);
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runOutputTests();
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runUniqueObjectTest();
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}
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}
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function runSupportedTest(extensionEnabled) {
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var supported = gl.getSupportedExtensions();
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if (supported.indexOf("OES_standard_derivatives") >= 0) {
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if (extensionEnabled) {
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testPassed("OES_standard_derivatives listed as supported and getExtension succeeded");
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} else {
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testFailed("OES_standard_derivatives listed as supported but getExtension failed");
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}
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} else {
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if (extensionEnabled) {
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testFailed("OES_standard_derivatives not listed as supported but getExtension succeeded");
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} else {
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testPassed("OES_standard_derivatives not listed as supported and getExtension failed -- this is legal");
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}
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}
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}
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function runHintTestDisabled() {
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debug("Testing FRAGMENT_SHADER_DERIVATIVE_HINT_OES with extension disabled");
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// Use the constant directly as we don't have the extension
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var FRAGMENT_SHADER_DERIVATIVE_HINT_OES = 0x8B8B;
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gl.getParameter(FRAGMENT_SHADER_DERIVATIVE_HINT_OES);
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glErrorShouldBe(gl, gl.INVALID_ENUM, "FRAGMENT_SHADER_DERIVATIVE_HINT_OES should not be queryable if extension is disabled");
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gl.hint(FRAGMENT_SHADER_DERIVATIVE_HINT_OES, gl.DONT_CARE);
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glErrorShouldBe(gl, gl.INVALID_ENUM, "hint should not accept FRAGMENT_SHADER_DERIVATIVE_HINT_OES if extension is disabled");
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}
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function runHintTestEnabled() {
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debug("Testing FRAGMENT_SHADER_DERIVATIVE_HINT_OES with extension enabled");
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shouldBe("ext.FRAGMENT_SHADER_DERIVATIVE_HINT_OES", "0x8B8B");
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gl.getParameter(ext.FRAGMENT_SHADER_DERIVATIVE_HINT_OES);
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glErrorShouldBe(gl, gl.NO_ERROR, "FRAGMENT_SHADER_DERIVATIVE_HINT_OES query should succeed if extension is enabled");
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// Default value is DONT_CARE
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if (gl.getParameter(ext.FRAGMENT_SHADER_DERIVATIVE_HINT_OES) == gl.DONT_CARE) {
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testPassed("Default value of FRAGMENT_SHADER_DERIVATIVE_HINT_OES is DONT_CARE");
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} else {
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testFailed("Default value of FRAGMENT_SHADER_DERIVATIVE_HINT_OES is not DONT_CARE");
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}
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// Ensure that we can set the target
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gl.hint(ext.FRAGMENT_SHADER_DERIVATIVE_HINT_OES, gl.DONT_CARE);
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glErrorShouldBe(gl, gl.NO_ERROR, "hint should accept FRAGMENT_SHADER_DERIVATIVE_HINT_OES");
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// Test all the hint modes
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var validModes = ["FASTEST", "NICEST", "DONT_CARE"];
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var anyFailed = false;
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for (var n = 0; n < validModes.length; n++) {
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var mode = validModes[n];
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gl.hint(ext.FRAGMENT_SHADER_DERIVATIVE_HINT_OES, gl[mode]);
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if (gl.getParameter(ext.FRAGMENT_SHADER_DERIVATIVE_HINT_OES) != gl[mode]) {
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testFailed("Round-trip of hint()/getParameter() failed on mode " + mode);
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anyFailed = true;
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}
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}
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if (!anyFailed) {
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testPassed("Round-trip of hint()/getParameter() with all supported modes");
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}
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}
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function runShaderTests(extensionEnabled) {
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debug("Testing various shader compiles with extension " + (extensionEnabled ? "enabled" : "disabled"));
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// Expect the macro shader to succeed ONLY if enabled
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var macroFragmentShader = wtu.loadShaderFromScript(gl, "macroFragmentShader");
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if (extensionEnabled) {
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if (macroFragmentShader) {
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// Expected result
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testPassed("GL_OES_standard_derivatives defined in shaders when extension is enabled");
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} else {
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testFailed("GL_OES_standard_derivatives not defined in shaders when extension is enabled");
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}
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} else {
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if (macroFragmentShader) {
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testFailed("GL_OES_standard_derivatives defined in shaders when extension is disabled");
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} else {
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testPassed("GL_OES_standard_derivatives not defined in shaders when extension disabled");
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}
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}
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// Always expect the shader missing the #pragma to fail (whether enabled or not)
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var missingPragmaFragmentShader = wtu.loadShaderFromScript(gl, "missingPragmaFragmentShader");
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if (missingPragmaFragmentShader) {
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testFailed("Shader built-ins allowed without #extension pragma");
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} else {
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testPassed("Shader built-ins disallowed without #extension pragma");
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}
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// Try to compile a shader using the built-ins that should only succeed if enabled
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var testFragmentShader = wtu.loadShaderFromScript(gl, "testFragmentShader");
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if (extensionEnabled) {
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if (testFragmentShader) {
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testPassed("Shader built-ins compiled successfully when extension enabled");
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} else {
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testFailed("Shader built-ins failed to compile when extension enabled");
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}
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} else {
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if (testFragmentShader) {
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testFailed("Shader built-ins compiled successfully when extension disabled");
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} else {
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testPassed("Shader built-ins failed to compile when extension disabled");
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}
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}
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}
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function runOutputTests() {
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// This tests does several draws with various values of z.
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// The output of the fragment shader is:
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// [dFdx(z), dFdy(z), fwidth(z), 1.0]
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// The expected math: (note the conversion to uint8)
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// canvas.width = canvas.height = 50
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// dFdx = totalChange.x / canvas.width = 0.5 / 50.0 = 0.01
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// dFdy = totalChange.y / canvas.height = 0.5 / 50.0 = 0.01
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// fw = abs(dFdx + dFdy) = 0.01 + 0.01 = 0.02
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// r = floor(dFdx * 255) = 3
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// g = floor(dFdy * 255) = 3
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// b = floor(fw * 255) = 5
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var e = 2; // Amount of variance to allow in result pixels - may need to be tweaked higher
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debug("Testing various draws for valid built-in function behavior");
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canvas.width = 50; canvas.height = 50;
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gl.viewport(0, 0, canvas.width, canvas.height);
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gl.hint(ext.FRAGMENT_SHADER_DERIVATIVE_HINT_OES, gl.NICEST);
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var shaders = [
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wtu.loadShaderFromScript(gl, "outputVertexShader"),
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wtu.loadShaderFromScript(gl, "outputFragmentShader")
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];
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var program = wtu.setupProgram(gl, shaders, ['vPosition', 'texCoord0'], [0, 1]);
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var quadParameters = wtu.setupUnitQuad(gl, 0, 1);
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function readLocation(x, y) {
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var pixels = new Uint8Array(1 * 1 * 4);
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var px = Math.floor(x * canvas.width);
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var py = Math.floor(y * canvas.height);
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gl.readPixels(px, py, 1, 1, gl.RGBA, gl.UNSIGNED_BYTE, pixels);
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return pixels;
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};
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function toString(arr) {
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var s = "[";
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for (var n = 0; n < arr.length; n++) {
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s += arr[n];
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if (n < arr.length - 1) {
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s += ", ";
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}
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}
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return s + "]";
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};
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function expectResult(target, successMessage, failureMessage) {
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var locations = [
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readLocation(0.1, 0.1),
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readLocation(0.9, 0.1),
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readLocation(0.1, 0.9),
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readLocation(0.9, 0.9),
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readLocation(0.5, 0.5)
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];
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var anyDiffer = false;
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for (var n = 0; n < locations.length; n++) {
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var source = locations[n];
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for (var m = 0; m < 4; m++) {
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if (Math.abs(source[m] - target[m]) > e) {
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anyDiffer = true;
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testFailed(failureMessage + "; should be " + toString(target) + ", was " + toString(source));
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break;
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}
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}
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}
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if (!anyDiffer) {
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testPassed(successMessage);
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}
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};
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function setupBuffers(tl, tr, bl, br) {
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gl.bindBuffer(gl.ARRAY_BUFFER, quadParameters[0]);
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gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([
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1.0, 1.0, tr,
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-1.0, 1.0, tl,
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-1.0, -1.0, bl,
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1.0, 1.0, tr,
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-1.0, -1.0, bl,
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1.0, -1.0, br]), gl.STATIC_DRAW);
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};
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// Draw 1: (no variation)
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setupBuffers(0.0, 0.0, 0.0, 0.0);
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wtu.drawQuad(gl);
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expectResult([0, 0, 0, 255],
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"Draw 1 (no variation) returned the correct data",
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"Draw 1 (no variation) returned incorrect data");
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// Draw 2: (variation in x)
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setupBuffers(1.0, 0.0, 1.0, 0.0);
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wtu.drawQuad(gl);
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expectResult([5, 0, 5, 255],
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"Draw 2 (variation in x) returned the correct data",
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"Draw 2 (variation in x) returned incorrect data");
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// Draw 3: (variation in y)
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setupBuffers(1.0, 1.0, 0.0, 0.0);
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wtu.drawQuad(gl);
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expectResult([0, 5, 5, 255],
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"Draw 3 (variation in y) returned the correct data",
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"Draw 3 (variation in y) returned incorrect data");
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// Draw 4: (variation in x & y)
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setupBuffers(1.0, 0.5, 0.5, 0.0);
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wtu.drawQuad(gl);
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expectResult([3, 3, 5, 255],
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"Draw 4 (variation in x & y) returned the correct data",
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"Draw 4 (variation in x & y) returned incorrect data");
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}
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function attemptToForceGC()
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{
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var holderArray = [];
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var tempArray;
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window.tempArray = holderArray;
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for (var i = 0; i < 12; ++i) {
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tempArray = [];
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for (var j = 0; j < 1024 * 1024; ++j) {
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tempArray.push(0);
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}
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holderArray.push(tempArray);
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}
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window.tempArray = null;
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}
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function runUniqueObjectTest()
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{
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debug("Testing that getExtension() returns the same object each time");
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gl.getExtension("OES_standard_derivatives").myProperty = 2;
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if (window.GCController) {
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window.GCController.collect();
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} else if (window.opera && window.opera.collect) {
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window.opera.collect();
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} else {
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attemptToForceGC();
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}
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shouldBe('gl.getExtension("OES_standard_derivatives").myProperty', '2');
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}
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debug("");
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successfullyParsed = true;
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</script>
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<script src="../resources/js-test-post.js"></script>
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</body>
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</html>
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