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| 1 <!-- |
| 2 |
| 3 /* |
| 4 ** Copyright (c) 2012 The Khronos Group Inc. |
| 5 ** |
| 6 ** Permission is hereby granted, free of charge, to any person obtaining a |
| 7 ** copy of this software and/or associated documentation files (the |
| 8 ** "Materials"), to deal in the Materials without restriction, including |
| 9 ** without limitation the rights to use, copy, modify, merge, publish, |
| 10 ** distribute, sublicense, and/or sell copies of the Materials, and to |
| 11 ** permit persons to whom the Materials are furnished to do so, subject to |
| 12 ** the following conditions: |
| 13 ** |
| 14 ** The above copyright notice and this permission notice shall be included |
| 15 ** in all copies or substantial portions of the Materials. |
| 16 ** |
| 17 ** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 18 ** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 19 ** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| 20 ** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY |
| 21 ** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
| 22 ** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
| 23 ** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS. |
| 24 */ |
| 25 |
| 26 --> |
| 27 |
| 28 <!DOCTYPE html> |
| 29 <html> |
| 30 <head> |
| 31 <meta charset="utf-8"> |
| 32 <title>vertexattribpointer offsets test</title> |
| 33 <link rel="stylesheet" href="../../resources/js-test-style.css"/> |
| 34 <script src="../../resources/js-test-pre.js"></script> |
| 35 <script src="../resources/webgl-test.js"> </script> |
| 36 <script src="../resources/webgl-test-utils.js"> </script> |
| 37 </head> |
| 38 <body> |
| 39 <canvas id="example" width="50" height="50"> |
| 40 There is supposed to be an example drawing here, but it's not important. |
| 41 </canvas> |
| 42 <div id="description"></div> |
| 43 <div id="console"></div> |
| 44 <script id="vshader" type="x-shader/x-vertex"> |
| 45 attribute vec4 vPosition; |
| 46 void main() |
| 47 { |
| 48 gl_Position = vPosition; |
| 49 } |
| 50 </script> |
| 51 |
| 52 <script id="fshader" type="x-shader/x-fragment"> |
| 53 precision mediump float; |
| 54 uniform vec4 color; |
| 55 void main() |
| 56 { |
| 57 gl_FragColor = color; |
| 58 } |
| 59 </script> |
| 60 |
| 61 <script> |
| 62 function fail(x,y, buf, shouldBe) |
| 63 { |
| 64 var i = (y*50+x) * 4; |
| 65 var reason = "pixel at ("+x+","+y+") is ("+buf[i]+","+buf[i+1]+","+b
uf[i+2]+","+buf[i+3]+"), should be "+shouldBe; |
| 66 testFailed(reason); |
| 67 } |
| 68 |
| 69 function pass() |
| 70 { |
| 71 testPassed("drawing is correct"); |
| 72 } |
| 73 |
| 74 function init() |
| 75 { |
| 76 if (window.initNonKhronosFramework) { |
| 77 window.initNonKhronosFramework(false); |
| 78 } |
| 79 description("test vertexattribpointer offsets work"); |
| 80 |
| 81 wtu = WebGLTestUtils; |
| 82 gl = initWebGL("example"); |
| 83 program = setupProgram(gl, "vshader", "fshader", [ "vPosition"]); |
| 84 |
| 85 var tests = [ |
| 86 { data: new Float32Array([ 0, 1, 0, 1, 0, 0, 0, 0, 0 ]), |
| 87 type: gl.FLOAT, |
| 88 componentSize: 4, |
| 89 normalize: false, |
| 90 }, |
| 91 { data: new Float32Array([ 0, 1, 0, 1, 0, 0, 0, 0, 0 ]), |
| 92 type: gl.FLOAT, |
| 93 componentSize: 4, |
| 94 normalize: false, |
| 95 }, |
| 96 { data: new Uint16Array([ 0, 32767, 0, 32767, 0, 0, 0, 0, 0 ]), |
| 97 type: gl.SHORT, |
| 98 componentSize: 2, |
| 99 normalize: true, |
| 100 }, |
| 101 { data: new Uint16Array([ 0, 65535, 0, 65535, 0, 0, 0, 0, 0 ]), |
| 102 type: gl.UNSIGNED_SHORT, |
| 103 componentSize: 2, |
| 104 normalize: true, |
| 105 }, |
| 106 { data: new Uint16Array([ 0, 1, 0, 1, 0, 0, 0, 0, 0 ]), |
| 107 type: gl.UNSIGNED_SHORT, |
| 108 componentSize: 2, |
| 109 normalize: false, |
| 110 }, |
| 111 { data: new Uint16Array([ 0, 1, 0, 1, 0, 0, 0, 0, 0 ]), |
| 112 type: gl.SHORT, |
| 113 componentSize: 2, |
| 114 normalize: false, |
| 115 }, |
| 116 { data: new Uint8Array([ 0, 127, 0, 127, 0, 0, 0, 0, 0 ]), |
| 117 type: gl.BYTE, |
| 118 componentSize: 1, |
| 119 normalize: true, |
| 120 }, |
| 121 { data: new Uint8Array([ 0, 255, 0, 255, 0, 0, 0, 0, 0 ]), |
| 122 type: gl.UNSIGNED_BYTE, |
| 123 componentSize: 1, |
| 124 normalize: true, |
| 125 }, |
| 126 { data: new Uint8Array([ 0, 1, 0, 1, 0, 0, 0, 0, 0 ]), |
| 127 type: gl.BYTE, |
| 128 componentSize: 1, |
| 129 normalize: false, |
| 130 }, |
| 131 { data: new Uint8Array([ 0, 1, 0, 1, 0, 0, 0, 0, 0 ]), |
| 132 type: gl.UNSIGNED_BYTE, |
| 133 componentSize: 1, |
| 134 normalize: false, |
| 135 } |
| 136 ]; |
| 137 |
| 138 var vertexObject = gl.createBuffer(); |
| 139 gl.bindBuffer(gl.ARRAY_BUFFER, vertexObject); |
| 140 gl.bufferData(gl.ARRAY_BUFFER, 1024, gl.STATIC_DRAW); |
| 141 gl.enableVertexAttribArray(0); |
| 142 |
| 143 var colorLoc = gl.getUniformLocation(program, "color"); |
| 144 var kNumVerts = 3; |
| 145 var kNumComponents = 3; |
| 146 |
| 147 var count = 0; |
| 148 for (var tt = 0; tt < tests.length; ++tt) { |
| 149 var test = tests[tt]; |
| 150 for (var oo = 0; oo < 3; ++oo) { |
| 151 for (var ss = 0; ss < 3; ++ss) { |
| 152 var offset = (oo + 1) * test.componentSize; |
| 153 var color = (count % 2) ? [1, 0, 0, 1] : [0, 1, 0, 1]; |
| 154 var stride = test.componentSize * kNumComponents + test.compon
entSize * ss; |
| 155 debug(""); |
| 156 debug("check with " + wtu.glEnumToString(gl, test.type) + " at
offset: " + offset + " with stride:" + stride + " normalize: " + test.normalize
); |
| 157 gl.uniform4fv(colorLoc, color); |
| 158 var data = new Uint8Array(test.componentSize * kNumVerts * kNu
mComponents + stride * (kNumVerts - 1)); |
| 159 var view = new Uint8Array(test.data.buffer); |
| 160 var size = test.componentSize * kNumComponents; |
| 161 for (var jj = 0; jj < kNumVerts; ++jj) { |
| 162 var off1 = jj * size; |
| 163 var off2 = jj * stride; |
| 164 for (var zz = 0; zz < size; ++zz) { |
| 165 data[off2 + zz] = view[off1 + zz]; |
| 166 } |
| 167 } |
| 168 gl.bufferSubData(gl.ARRAY_BUFFER, offset, data); |
| 169 gl.vertexAttribPointer(0, 3, test.type, test.normalize, stride
, offset); |
| 170 gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT); |
| 171 gl.drawArrays(gl.TRIANGLES, 0, 3); |
| 172 |
| 173 var buf = new Uint8Array(50 * 50 * 4); |
| 174 gl.readPixels(0, 0, 50, 50, gl.RGBA, gl.UNSIGNED_BYTE, buf); |
| 175 |
| 176 var black = [0, 0, 0, 255]; |
| 177 var other = [color[0] * 255, color[1] * 255, color[2] * 255, c
olor[3] * 255]; |
| 178 var otherMsg = "should be " + ((count % 2) ? "red" : "green") |
| 179 wtu.checkCanvasRect(gl, 0, 0, 1, 1, black, "should be black",
0); |
| 180 wtu.checkCanvasRect(gl, 0, 49, 1, 1, black, "should be black",
0); |
| 181 wtu.checkCanvasRect(gl, 26, 40, 1, 1, other, otherMsg, 0); |
| 182 wtu.checkCanvasRect(gl, 26, 27, 1, 1, other, otherMsg, 0); |
| 183 wtu.checkCanvasRect(gl, 40, 27, 1, 1, other, otherMsg, 0); |
| 184 ++count; |
| 185 } |
| 186 } |
| 187 } |
| 188 } |
| 189 |
| 190 init(); |
| 191 successfullyParsed = true; |
| 192 </script> |
| 193 <script src="../../resources/js-test-post.js"></script> |
| 194 |
| 195 </body> |
| 196 </html> |
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Chromium Code Reviews
Issue 10399113:
Roll webgl conformance tests to r17874: part 2, adding r17874 (Closed)
Base URL: svn://chrome-svn/chrome/trunk/deps/