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| ** Copyright (c) 2012 The Khronos Group Inc. |
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| |
| <!DOCTYPE html> |
| <html> |
| <head> |
| <meta charset="utf-8"> |
| <title>WebGL the minimum number of attributes are supported.</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="4" height="4" style="width: 40px; height: 30px;"></canvas> |
| <div id="description"></div> |
| <div id="console"></div> |
| <script id="vshader" type="x-shader/x-vertex"> |
| attribute vec4 vPosition; |
| attribute vec4 v0; |
| attribute vec4 v1; |
| attribute vec4 v2; |
| attribute vec4 v3; |
| attribute vec4 v4; |
| attribute vec4 v5; |
| attribute vec4 v6; |
| varying vec4 color; |
| void main() |
| { |
| gl_Position = vPosition; |
| color = v0 + v1 + v2 + v3 + v4 + v5 + v6; |
| } |
| </script> |
| |
| <script id="fshader" type="x-shader/x-fragment"> |
| precision mediump float; |
| varying vec4 color; |
| void main() |
| { |
| gl_FragColor = color; |
| } |
| </script> |
| <script> |
| "use strict"; |
| description(document.title); |
| var wtu = WebGLTestUtils; |
| var gl = wtu.create3DContext("example"); |
| var program = wtu.setupTexturedQuad(gl); |
| |
| var program = wtu.setupProgram( |
| gl, |
| ['vshader', 'fshader'], |
| ['vPosition', 'v0', 'v1', 'v2', 'v3', 'v4', 'v5', 'v6'], |
| [0, 1, 2, 3, 4, 5, 6, 7]); |
| |
| for (var ii = 0; ii < 7; ++ii) { |
| var v = (ii + 1) / 28; |
| var vertexObject = gl.createBuffer(); |
| gl.bindBuffer(gl.ARRAY_BUFFER, vertexObject); |
| gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([ |
| v, v/2, v/4, v/8, |
| v, v/2, v/4, v/8, |
| v, v/2, v/4, v/8, |
| v, v/2, v/4, v/8, |
| v, v/2, v/4, v/8, |
| v, v/2, v/4, v/8]), gl.STATIC_DRAW); |
| gl.enableVertexAttribArray(ii + 1); |
| gl.vertexAttribPointer(ii + 1, 4, gl.FLOAT, false, 0, 0); |
| } |
| |
| wtu.clearAndDrawUnitQuad(gl); |
| glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors from setup."); |
| wtu.checkCanvasRect(gl, 0, 0, gl.canvas.width, gl.canvas.height, [255, 127, 64, 32], "Should render 255,127,64,32 (+/-1)", 1); |
| |
| var successfullyParsed = true; |
| |
| </script> |
| </body> |
| <script src="../../resources/js-test-post.js"></script> |
| |
| </body> |
| </html> |
| |
| |
