content/canvas/test/webgl-conformance/conformance/attribs/gl-vertex-attrib-zero-issues.html@8bccb770b82d (annotated)
content/canvas/test/webgl-conformance/conformance/attribs/gl-vertex-attrib-zero-issues.html
Wed, 31 Dec 2014 13:27:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 13:27:57 +0100
- branch
- TOR_BUG_3246
- changeset 6
- 8bccb770b82d
- permissions
- -rw-r--r--
Ignore runtime configuration files generated during quality assurance.
| michael@0 | 1 | <!-- |
| michael@0 | 2 | // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
| michael@0 | 3 | // Use of this source code is governed by a BSD-style license that can be |
| michael@0 | 4 | // found in the LICENSE file. |
| michael@0 | 5 | --> |
| michael@0 | 6 | <!DOCTYPE html> |
| michael@0 | 7 | <html> |
| michael@0 | 8 | <head> |
| michael@0 | 9 | <meta charset="utf-8"> |
| michael@0 | 10 | <title>WebGL Enable Vertex Attrib Zero Test</title> |
| michael@0 | 11 | <link rel="stylesheet" href="../../resources/js-test-style.css"/> |
| michael@0 | 12 | <script src="../../resources/js-test-pre.js"></script> |
| michael@0 | 13 | <script src="../resources/webgl-test.js"> </script> |
| michael@0 | 14 | <script src="../resources/webgl-test-utils.js"> </script> |
| michael@0 | 15 | </head> |
| michael@0 | 16 | <body> |
| michael@0 | 17 | <canvas id="example" width="50" height="50"> |
| michael@0 | 18 | </canvas> |
| michael@0 | 19 | <div id="description"></div> |
| michael@0 | 20 | <div id="console"></div> |
| michael@0 | 21 | <script id="vshader" type="x-shader/x-vertex"> |
| michael@0 | 22 | attribute vec4 vPosition; |
| michael@0 | 23 | void main() |
| michael@0 | 24 | { |
| michael@0 | 25 | gl_Position = vPosition; |
| michael@0 | 26 | } |
| michael@0 | 27 | </script> |
| michael@0 | 28 | |
| michael@0 | 29 | <script id="fshader" type="x-shader/x-fragment"> |
| michael@0 | 30 | void main() |
| michael@0 | 31 | { |
| michael@0 | 32 | gl_FragColor = vec4(0.0,0.0,0.0,0.0); |
| michael@0 | 33 | } |
| michael@0 | 34 | </script> |
| michael@0 | 35 | |
| michael@0 | 36 | <script> |
| michael@0 | 37 | description("Test some of the issues of the difference between attrib 0 on OpenGL vs WebGL"); |
| michael@0 | 38 | debug(""); |
| michael@0 | 39 | var wtu = WebGLTestUtils; |
| michael@0 | 40 | var gl = wtu.create3DContext("example"); |
| michael@0 | 41 | |
| michael@0 | 42 | function setup(numVerts, attribIndex) { |
| michael@0 | 43 | var program = wtu.setupProgram( |
| michael@0 | 44 | gl, ['vshader', 'fshader'], ['vPosition'], [attribIndex]); |
| michael@0 | 45 | // draw with something on attrib zero with a small number of vertices |
| michael@0 | 46 | var vertexObject = gl.createBuffer(); |
| michael@0 | 47 | g_program = program; |
| michael@0 | 48 | g_attribLocation = attribIndex; |
| michael@0 | 49 | shouldBe("g_attribLocation", "gl.getAttribLocation(g_program, 'vPosition')"); |
| michael@0 | 50 | gl.bindBuffer(gl.ARRAY_BUFFER, vertexObject); |
| michael@0 | 51 | gl.bufferData( |
| michael@0 | 52 | gl.ARRAY_BUFFER, new Float32Array(numVerts * 3), gl.STATIC_DRAW); |
| michael@0 | 53 | gl.vertexAttribPointer(attribIndex, 3, gl.FLOAT, false, 0, 0); |
| michael@0 | 54 | var indices = new Uint16Array(numVerts); |
| michael@0 | 55 | for (var ii = 0; ii < numVerts; ++ii) { |
| michael@0 | 56 | indices[ii] = ii; |
| michael@0 | 57 | } |
| michael@0 | 58 | var indexBuffer = gl.createBuffer(); |
| michael@0 | 59 | gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, indexBuffer); |
| michael@0 | 60 | gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, indices, gl.STATIC_DRAW); |
| michael@0 | 61 | return program; |
| michael@0 | 62 | } |
| michael@0 | 63 | |
| michael@0 | 64 | var p1 = setup(3, 0); |
| michael@0 | 65 | var p2 = setup(60000, 3); |
| michael@0 | 66 | |
| michael@0 | 67 | for (var ii = 0; ii < 5; ++ii) { |
| michael@0 | 68 | gl.useProgram(p1); |
| michael@0 | 69 | gl.enableVertexAttribArray(0); |
| michael@0 | 70 | gl.drawElements(gl.TRIANGLES, 3, gl.UNSIGNED_SHORT, 0); |
| michael@0 | 71 | glErrorShouldBe( |
| michael@0 | 72 | gl, gl.NO_ERROR, |
| michael@0 | 73 | "drawing using attrib 0 with 3 verts"); |
| michael@0 | 74 | |
| michael@0 | 75 | gl.useProgram(p2); |
| michael@0 | 76 | gl.enableVertexAttribArray(3); |
| michael@0 | 77 | gl.drawArrays(gl.LINES, 0, 60000); |
| michael@0 | 78 | glErrorShouldBe( |
| michael@0 | 79 | gl, gl.NO_ERROR, |
| michael@0 | 80 | "drawing using attrib 3 with 60000 verts"); |
| michael@0 | 81 | } |
| michael@0 | 82 | |
| michael@0 | 83 | wtu.checkCanvas(gl, [0, 0, 0, 0], "canvas should be 0, 0, 0, 0"); |
| michael@0 | 84 | |
| michael@0 | 85 | successfullyParsed = true; |
| michael@0 | 86 | </script> |
| michael@0 | 87 | <script>finishTest();</script> |
| michael@0 | 88 | |
| michael@0 | 89 | </body> |
| michael@0 | 90 | </html> |
| michael@0 | 91 |
