| <!-- |
| 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>Matrix compound multiplication 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="canvas" width="256" height="256"> </canvas> |
| <div id="description"></div> |
| <div id="console"></div> |
| <script id="vshader" type="x-shader/x-vertex"> |
| attribute vec3 aPosition; |
| |
| void main() { |
| gl_Position = vec4(aPosition, 1); |
| } |
| </script> |
| <script id="fshader" type="x-shader/x-fragment"> |
| precision mediump float; |
| |
| void main() { |
| $(type) a = $(type)(0.0); |
| $(type) b = $(type)(0.0); |
| a[1][1] = 3.0; // 2nd column, 2nd row |
| b[0][1] = 2.0; // 1st column, 2nd row |
| $(type) c = a * b; |
| a *= b; |
| $(type) diffMat = a - c; |
| float diff = length(diffMat[0]) + length(diffMat[1]); |
| gl_FragColor = vec4(0.0, diff < 0.01 ? 1.0 : 0.0, 0.0, 1.0); |
| } |
| </script> |
| <script type="application/javascript"> |
| "use strict"; |
| description("Matrix compound multiplication test comparing against normal multiplication."); |
| debug(""); |
| var wtu = WebGLTestUtils; |
| function test() { |
| var gl = wtu.create3DContext("canvas"); |
| if (!gl) { |
| testFailed("context does not exist"); |
| return; |
| } |
| wtu.setupUnitQuad(gl); |
| var fshaderTemplate = wtu.getScript('fshader'); |
| |
| var types = ['mat2', 'mat3', 'mat4']; |
| for (var i = 0; i < types.length; ++i) { |
| debug(''); |
| debug('Testing type ' + types[i]); |
| var fshaderSource = wtu.replaceParams(fshaderTemplate, {type: types[i]}); |
| var program = wtu.setupProgram(gl, ['vshader', fshaderSource], ["aPosition"], undefined, true); |
| wtu.drawUnitQuad(gl); |
| wtu.checkCanvas(gl, [0, 255, 0, 255], 'should be green'); |
| } |
| }; |
| |
| test(); |
| finishTest(); |
| </script> |
| </body> |
| </html> |
