| <!-- |
| Copyright (c) 2019 The Khronos Group Inc. |
| Use of this source code is governed by an MIT-style license that can be |
| found in the LICENSE.txt file. |
| --> |
| |
| <!DOCTYPE html> |
| <html> |
| <head> |
| <meta charset="utf-8"> |
| <title>WebGL Vertex Attrib Context Switch Test</title> |
| <link rel="stylesheet" href="../../resources/js-test-style.css"/> |
| <script src="../../js/js-test-pre.js"></script> |
| <script src="../../js/webgl-test-utils.js"> </script> |
| </head> |
| <body> |
| <canvas id="one" width="50" height="50"> |
| </canvas> |
| <canvas id="two" width="50" height="50"> |
| </canvas> |
| <div id="description"></div> |
| <div id="console"></div> |
| <script> |
| "use strict"; |
| description("tests that vertex attrib value is preserved across context switches"); |
| var wtu = WebGLTestUtils; |
| var positionLocation = 0; |
| var colorLocation = 1; |
| var gridRes = 1; |
| |
| var canvas1 = document.getElementById("one"); |
| var gl1 = wtu.create3DContext(canvas1); |
| var program1 = wtu.setupSimpleVertexColorProgram(gl1, positionLocation, colorLocation); |
| gl1.vertexAttrib4f(colorLocation, 0.0, 1.0, 0.0, 1.0); |
| wtu.setupIndexedQuad(gl1, gridRes, positionLocation); |
| wtu.clearAndDrawIndexedQuad(gl1, gridRes); |
| wtu.checkCanvas(gl1, [0, 255, 0, 255], "should be green 1"); |
| |
| var canvas2 = document.getElementById("two"); |
| var gl2 = wtu.create3DContext(canvas2); |
| var program2 = wtu.setupSimpleVertexColorProgram(gl2, positionLocation, colorLocation); |
| wtu.setupIndexedQuad(gl2, gridRes, positionLocation); |
| wtu.clearAndDrawIndexedQuad(gl2, gridRes); |
| wtu.checkCanvas(gl2, [0, 0, 0, 255], "should be black 1"); |
| |
| wtu.checkCanvas(gl1, [0, 255, 0, 255], "should be green 2"); |
| |
| wtu.clearAndDrawIndexedQuad(gl2, gridRes); |
| wtu.checkCanvas(gl2, [0, 0, 0, 255], "should be black 2"); |
| |
| wtu.clearAndDrawIndexedQuad(gl1, gridRes); |
| wtu.checkCanvas(gl1, [0, 255, 0, 255], "should be green 3"); |
| |
| var successfullyParsed = true; |
| </script> |
| <script src="../../js/js-test-post.js"></script> |
| |
| </body> |
| </html> |
| |