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| --> |
| |
| <!DOCTYPE html> |
| <html> |
| <head> |
| <meta charset="utf-8"> |
| <title>WebGL Disabled Vertex Attrib Test</title> |
| <link rel="stylesheet" href="../../resources/js-test-style.css"/> |
| <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> |
| <canvas id="example" width="50" height="50"> |
| </canvas> |
| <div id="description"></div> |
| <div id="console"></div> |
| <script id="vshader" type="x-shader/x-vertex"> |
| attribute vec4 a_position; |
| attribute vec4 a_color; |
| varying vec4 v_color; |
| void main() { |
| gl_Position = a_position; |
| v_color = a_color; |
| } |
| </script> |
| |
| <script id="fshader" type="x-shader/x-fragment"> |
| precision mediump float; |
| varying vec4 v_color; |
| bool isCorrectColor(vec4 v) { |
| return v.x == 0.0 && v.y == 0.0 && v.z == 0.0 && v.w == 1.0; |
| } |
| void main() { |
| gl_FragColor = isCorrectColor(v_color) ? vec4(0, 1, 0, 1) : vec4(1, 0, 0, 1); |
| } |
| </script> |
| |
| <script> |
| "use strict"; |
| var wtu = WebGLTestUtils; |
| description(); |
| |
| var gl = wtu.create3DContext("example"); |
| |
| var numVertexAttribs = gl.getParameter(gl.MAX_VERTEX_ATTRIBS); |
| for (var ii = 0; ii < numVertexAttribs; ++ii) { |
| var colorLocation = (ii + 1) % numVertexAttribs; |
| var positionLocation = colorLocation ? 0 : 1; |
| |
| if (positionLocation != 0) { |
| // We need to create a new 3d context for testing attrib 0 |
| // since we've already effected attrib 0 on other tests. |
| gl = wtu.create3DContext(); |
| } |
| |
| debug("testing attrib: " + colorLocation); |
| var program = wtu.setupProgram( |
| gl, |
| ['vshader', 'fshader'], |
| ['a_position', 'a_color'], |
| [positionLocation, colorLocation]); |
| var gridRes = 1; |
| wtu.setupQuad(gl, gridRes, positionLocation); |
| wtu.drawIndexedQuad(gl, gridRes); |
| wtu.checkCanvas(gl, [0, 255, 0, 255], "should be green"); |
| } |
| glErrorShouldBe(gl, gl.NO_ERROR, "should be no errors"); |
| |
| var successfullyParsed = true; |
| </script> |
| <script src="../../resources/js-test-post.js"></script> |
| |
| </body> |
| </html> |
| |
