Index: third_party/webgl/conformance-suites/1.0.0/conformance/oes-standard-derivatives.html |
=================================================================== |
--- third_party/webgl/conformance-suites/1.0.0/conformance/oes-standard-derivatives.html (revision 121077) |
+++ third_party/webgl/conformance-suites/1.0.0/conformance/oes-standard-derivatives.html (working copy) |
@@ -1,376 +0,0 @@ |
-<!-- |
-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 PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" |
- "http://www.w3.org/TR/html4/loose.dtd"> |
-<html> |
-<head> |
-<meta http-equiv="Content-Type" content="text/html; 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 highp 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 { |
- attemptToForceGC(); |
- } |
- shouldBe('gl.getExtension("OES_standard_derivatives").myProperty', '2'); |
-} |
- |
- |
-debug(""); |
-successfullyParsed = true; |
-</script> |
-<script src="../resources/js-test-post.js"></script> |
-<script> |
-</script> |
- |
-</body> |
-</html> |