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Unified Diff: conformance/canvas/canvas-test.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/canvas/canvas-test.html
===================================================================
--- conformance/canvas/canvas-test.html (revision 0)
+++ conformance/canvas/canvas-test.html (revision 0)
@@ -0,0 +1,192 @@
+<!--
+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 Canvas 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>
+</head>
+<body>
+<div id="description"></div>
+<div id="console"></div>
+<canvas id="canvas" style="width: 50px; height: 50px;"> </canvas>
+<canvas id="canvas2d" width="40" height="40"> </canvas>
+<script>
+if (window.initNonKhronosFramework) {
+ window.initNonKhronosFramework(true);
+}
+
+description("This test ensures WebGL implementations interact correctly with the canvas tag.");
+
+debug("");
+debug("Canvas.getContext");
+
+var err;
+var canvas = document.getElementById("canvas");
+var canvas2d = document.getElementById("canvas2d");
+var ctx2d = canvas2d.getContext("2d");
+var gl = create3DContext(canvas);
+if (!gl) {
+ testFailed("context does not exist");
+} else {
+ testPassed("context exists");
+
+ debug("");
+ debug("Checking canvas and WebGL interaction");
+
+ // Check that a canvas with no width or height is 300x150 pixels
+ shouldBe('canvas.width', '300');
+ shouldBe('canvas.height', '150');
+
+ // Check get a 4 value gl parameter as a csv string.
+ function getValue4v(name) {
+ var v = gl.getParameter(name);
+ var result = '' +
+ v[0] + ',' +
+ v[1] + ',' +
+ v[2] + ',' +
+ v[3];
+ return result;
+ }
+
+ function getViewport() {
+ return getValue4v(gl.VIEWPORT);
+ }
+
+ function getClearColor() {
+ return getValue4v(gl.COLOR_CLEAR_VALUE);
+ }
+
+ function isAboutEqual(a, b) {
+ return Math.abs(a - b) < 0.01;
+ }
+
+ function isAboutEqualInt(a, b) {
+ return Math.abs(a - b) < 3;
+ }
+
+ function checkCanvasContentIs(r3d,g3d,b3d,a3d) {
+ var r2d;
+ var g2d;
+ var b2d;
+ var a2d;
+
+ function checkPixel(x, y, r3d,g3d,b3d,a3d) {
+ var offset = (y * 40 + x) * 4;
+ r2d = imgData.data[offset];
+ g2d = imgData.data[offset + 1];
+ b2d = imgData.data[offset + 2];
+ a2d = imgData.data[offset + 3];
+ //debug('' + x + ', ' + y + "(" + offset + ") = " + r2d + ", " + g2d + ", " + b2d + ", " + a2d);
+ return isAboutEqualInt(r2d, r3d) &&
+ isAboutEqualInt(g2d, g3d) &&
+ isAboutEqualInt(b2d, b3d) &&
+ isAboutEqualInt(a2d, a3d);
+ }
+
+ function checkPixels(r3d,g3d,b3d,a3d) {
+ return checkPixel(0, 0, r3d, g3d, b3d, a3d) &&
+ checkPixel(0, 39, r3d, g3d, b3d, a3d) &&
+ checkPixel(39, 0, r3d, g3d, b3d, a3d) &&
+ checkPixel(39, 39, r3d, g3d, b3d, a3d) &&
+ checkPixel(0, 0, r3d, g3d, b3d, a3d);
+ };
+
+ // Set to just take the color from the 3d canvas
+ ctx2d.globalCompositeOperation = 'copy';
+
+ // fill 2d canvas with orange
+ ctx2d.fillStyle = "rgb(255,192,128)";
+ ctx2d.fillRect (0, 0, 40, 40);
+
+ // get the image data
+ var imgData = ctx2d.getImageData(0, 0, 40, 40);
+
+ // check it got cleared.
+ if (!checkPixels(255, 192, 128, 255)) {
+ testFailed("unable to fill 2d context.");
+ return;
+ }
+
+ // draw 3d canvas on top.
+ ctx2d.drawImage(canvas, 0,0, 40, 40);
+
+ // get the image data
+ var imgData = ctx2d.getImageData(0, 0, 40, 40);
+
+ // Check it's the expected color.
+ if (!checkPixels(r3d, g3d, b3d, a3d)) {
+ testFailed("pixels are " + r2d + "," + g2d + "," + b2d + "," + a2d +
+ " expected " + r3d + "," + g3d + "," + b3d + "," + a3d);
+ } else {
+ testPassed("pixels are " + r3d + "," + g3d + "," + b3d + "," + a3d);
+ }
+ }
+
+ checkCanvasContentIs(0, 0, 0, 0);
+ shouldBe('getViewport()', '"0,0,300,150"');
+
+ // Change the display size of the canvas and check
+ // the viewport size does not change.
+ debug("");
+ debug("change display size of canvas and see that viewport does not change");
+ canvas.style.width = "100px";
+ canvas.style.height = "25px";
+ var intervalId;
+ intervalId = window.setInterval(function() {
+ if (canvas.clientWidth == 100 &&
+ canvas.clientHeight == 25) {
+ window.clearInterval(intervalId);
+ shouldBe('getViewport()', '"0,0,300,150"');
+ shouldBe('canvas.width', '300');
+ shouldBe('canvas.height', '150');
+
+ // Change the actual size of the canvas
+ // Check that the viewport does not change.
+ // Check that the clear color does not change.
+ // Check that the color mask does not change.
+ debug("");
+ debug("change the actual size of the canvas and see that the viewport does not change");
+ gl.clearColor(0.25, 0.5, 0.75, 1);
+ gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
+ checkCanvasContentIs(64, 128, 192, 255);
+ gl.colorMask(0,0,0,0);
+ glErrorShouldBe(gl, gl.NO_ERROR, "No GL errors before resizing the canvas");
+ canvas.width = 400;
+ canvas.height = 10;
+ err = gl.getError();
+ // Some implementations might lost the context when resizing
+ if (err != gl.CONTEXT_LOST_WEBGL) {
+ shouldBe("err", "gl.NO_ERROR");
+ var v = gl.getParameter(gl.COLOR_CLEAR_VALUE);
+ assertMsg(isAboutEqual(v[0], 0.25) &&
+ isAboutEqual(v[1], 0.5) &&
+ isAboutEqual(v[2], 0.75) &&
+ isAboutEqual(v[3], 1),
+ "gl.clearColor should not change after canvas resize");
+ v = gl.getParameter(gl.COLOR_WRITEMASK);
+ assertMsg(isAboutEqual(v[0], 0) &&
+ isAboutEqual(v[1], 0) &&
+ isAboutEqual(v[2], 0) &&
+ isAboutEqual(v[3], 0),
+ "gl.colorMask should not change after canvas resize");
+ shouldBe('getViewport()', '"0,0,300,150"');
+ checkCanvasContentIs(0, 0, 0, 0);
+ }
+
+ debug("");
+ finishTest();
+ }
+ }, 1000/30);
+}
+</script>
+
+</body>
+</html>
Property changes on: conformance/canvas/canvas-test.html
___________________________________________________________________
Added: svn:eol-style
+ LF
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