third_party/webgl/sdk/tests/conformance/attribs/gl-vertex-attrib-zero-issues.html - Issue 9360034: Remove everthing except conformance tests in the deps/third_party/webgl

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Issue 9360034: Remove everthing except conformance tests in the deps/third_party/webgl (Closed) Base URL: svn://chrome-svn/chrome/trunk/deps/

Patch Set: Created 8 years, 10 months ago

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1 <!--

2 // Copyright (c) 2011 The Chromium Authors. All rights reserved.

3 // Use of this source code is governed by a BSD-style license that can be

4 // found in the LICENSE file.

5 -->

6 <!DOCTYPE html>

7 <html>

8 <head>

9 <meta charset="utf-8">

10 <title>WebGL Enable Vertex Attrib Zero Test</title>

11 <link rel="stylesheet" href="../../resources/js-test-style.css"/>

12 <script src="../../resources/js-test-pre.js"></script>

13 <script src="../resources/webgl-test.js"> </script>

14 <script src="../resources/webgl-test-utils.js"> </script>

15 </head>

16 <body>

17 <canvas id="example" width="50" height="50">

18 </canvas>

19 <div id="description"></div>

20 <div id="console"></div>

21 <script id="vshader" type="x-shader/x-vertex">

22 attribute vec4 vPosition;

23 void main()

24 {

25 gl_Position = vPosition;

26 }

27 </script>

28

29 <script id="fshader" type="x-shader/x-fragment">

30 void main()

31 {

32 gl_FragColor = vec4(0.0,0.0,0.0,0.0);

33 }

34 </script>

35

36 <script>

37 description("Test some of the issues of the difference between attrib 0 on OpenG L vs WebGL");

38 debug("");

39 var wtu = WebGLTestUtils;

40 var canvas = document.getElementById("example");

41 var gl = wtu.create3DContext(canvas);

42

43 function setup(numVerts, attribIndex) {

44 var program = wtu.setupProgram(

45 gl,

46 [wtu.loadShaderFromScript(gl, 'vshader', gl.VERTEX_SHADER),

47 wtu.loadShaderFromScript(gl, 'fshader', gl.FRAGMENT_SHADER)],

48 ['vPosition'], [attribIndex]);

49 // draw with something on attrib zero with a small number of vertices

50 var vertexObject = gl.createBuffer();

51 g_program = program;

52 g_attribLocation = attribIndex;

53 shouldBe("g_attribLocation", "gl.getAttribLocation(g_program, 'vPosition')");

54 gl.bindBuffer(gl.ARRAY_BUFFER, vertexObject);

55 gl.bufferData(

56 gl.ARRAY_BUFFER, new Float32Array(numVerts * 3), gl.STATIC_DRAW);

57 gl.vertexAttribPointer(attribIndex, 3, gl.FLOAT, false, 0, 0);

58 var indices = new Uint16Array(numVerts);

59 for (var ii = 0; ii < numVerts; ++ii) {

60 indices[ii] = ii;

61 }

62 var indexBuffer = gl.createBuffer();

63 gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, indexBuffer);

64 gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, indices, gl.STATIC_DRAW);

65 return program;

66 }

67

68 var p1 = setup(3, 0);

69 var p2 = setup(60000, 3);

70

71 for (var ii = 0; ii < 5; ++ii) {

72 gl.useProgram(p1);

73 gl.enableVertexAttribArray(0);

74 gl.drawElements(gl.TRIANGLES, 3, gl.UNSIGNED_SHORT, 0);

75 glErrorShouldBe(

76 gl, gl.NO_ERROR,

77 "drawing using attrib 0 with 3 verts");

78

79 gl.useProgram(p2);

80 gl.enableVertexAttribArray(3);

81 gl.drawArrays(gl.LINES, 0, 60000);

82 glErrorShouldBe(

83 gl, gl.NO_ERROR,

84 "drawing using attrib 3 with 60000 verts");

85 }

86

87 wtu.checkCanvas(gl, [0, 0, 0, 0], "canvas should be 0, 0, 0, 0");

88

89 successfullyParsed = true;

90 </script>

91 <script src="../../resources/js-test-post.js"></script>

92

93 </body>

94 </html>

95

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