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Unified Diff: third_party/webgl/sdk/tests/conformance/rendering/culling.html

Issue 10399113: Roll webgl conformance tests to r17874: part 2, adding r17874 (Closed) Base URL: svn://chrome-svn/chrome/trunk/deps/
Patch Set: Created 8 years, 7 months ago
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Index: third_party/webgl/sdk/tests/conformance/rendering/culling.html
===================================================================
--- third_party/webgl/sdk/tests/conformance/rendering/culling.html (revision 0)
+++ third_party/webgl/sdk/tests/conformance/rendering/culling.html (revision 0)
@@ -0,0 +1,150 @@
+<!--
+
+/*
+** Copyright (c) 2012 The Khronos Group Inc.
+**
+** Permission is hereby granted, free of charge, to any person obtaining a
+** copy of this software and/or associated documentation files (the
+** "Materials"), to deal in the Materials without restriction, including
+** without limitation the rights to use, copy, modify, merge, publish,
+** distribute, sublicense, and/or sell copies of the Materials, and to
+** permit persons to whom the Materials are furnished to do so, subject to
+** the following conditions:
+**
+** The above copyright notice and this permission notice shall be included
+** in all copies or substantial portions of the Materials.
+**
+** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
+*/
+
+-->
+
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <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 id="vshader" type="x-shader/x-vertex">
+ attribute vec2 pos;
+
+ void main()
+ {
+ gl_Position = vec4(pos, 0, 1);
+ }
+ </script>
+
+ <script id="fshader" type="x-shader/x-fragment">
+ precision mediump float;
+ uniform vec4 col;
+
+ void main()
+ {
+ gl_FragColor = col;
+ }
+ </script>
+
+ <script>
+ function draw(gl, arr, colLoc, col) {
+ var vertices = new Float32Array(arr);
+ var vertBuf = gl.createBuffer();
+ gl.bindBuffer(gl.ARRAY_BUFFER, vertBuf);
+ gl.bufferData(gl.ARRAY_BUFFER, vertices, gl.STATIC_DRAW);
+ gl.vertexAttribPointer(0, 2, gl.FLOAT, false, 0, 0);
+ gl.uniform4fv(colLoc, col);
+ gl.drawArrays(gl.TRIANGLE_STRIP, 0, vertices.length / 2);
+ }
+
+ function clear(gl, col) {
+ gl.clearColor(col[0], col[1], col[2], col[3]);
+ gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
+ }
+
+ function check(gl, winding, shoulddraw) {
+ buf = new Uint8Array(4);
+ gl.readPixels(0, 0, 1, 1, gl.RGBA, gl.UNSIGNED_BYTE, buf);
+ if (buf[0] == 0 && buf[1] == 255 && buf[2] == 0 && buf[3] == 255)
+ testPassed(winding + ' face was ' + (shoulddraw ? '' : 'not ') + 'drawn.');
+ else
+ testFailed(winding + ' face was ' + (shoulddraw ? 'not ' : '') + 'drawn.');
+ }
+
+ function runTest()
+ {
+ var cwVertices = [-1, -1, -1, 1, 1, -1, 1, 1];
+ var ccwVertices = [-1, 1, -1, -1, 1, 1, 1, -1];
+ var red = [1, 0, 0, 1];
+ var green = [0, 1, 0, 1];
+ var ok;
+
+ var gl = initWebGL('testbed', { antialias: false });
+ if (!gl) {
+ testFailed('initWebGL(..) failed');
+ return;
+ }
+ var program = setupProgram(gl, 'vshader', 'fshader', ['pos']);
+ var colLoc = gl.getUniformLocation(program, 'col');
+
+ gl.enableVertexAttribArray(0);
+
+ debug('CULL_FACE should be off by default');
+ clear(gl, red);
+ draw(gl, ccwVertices, colLoc, green);
+ check(gl, 'CCW', true);
+ clear(gl, red);
+ draw(gl, cwVertices, colLoc, green);
+ check(gl, 'CW', true);
+
+ debug('Enabling CULL_FACE');
+ gl.enable(gl.CULL_FACE);
+
+ debug('BACK and CCW should be set by default');
+ clear(gl, red);
+ draw(gl, ccwVertices, colLoc, green);
+ check(gl, 'CCW', true);
+ clear(gl, green);
+ draw(gl, cwVertices, colLoc, red);
+ check(gl, 'CW', false);
+
+ var tests = [{ cullFace : 'BACK', frontFace : 'CCW', drawCCW : true, drawCW : false},
+ { cullFace : 'BACK', frontFace : 'CW', drawCCW : false, drawCW : true},
+ { cullFace : 'FRONT', frontFace : 'CCW', drawCCW : false, drawCW : true },
+ { cullFace : 'FRONT', frontFace : 'CW', drawCCW : true, drawCW : false},
+ { cullFace : 'FRONT_AND_BACK', frontFace : 'CCW', drawCCW : false, drawCW : false},
+ { cullFace : 'FRONT_AND_BACK', frontFace : 'CW', drawCCW : false, drawCW : false}];
+
+ for (var i = 0; i < tests.length; ++i) {
+ var t = tests[i];
+ debug('Setting ' + t.cullFace + ' and ' + t.frontFace);
+ gl.cullFace(gl[t.cullFace]);
+ gl.frontFace(gl[t.frontFace]);
+ clear(gl, t.drawCCW ? red : green);
+ draw(gl, ccwVertices, colLoc, t.drawCCW ? green : red);
+ check(gl, 'CCW', t.drawCCW);
+ clear(gl, t.drawCW ? red : green);
+ draw(gl, cwVertices, colLoc, t.drawCW ? green : red);
+ check(gl, 'CW', t.drawCW);
+ }
+
+ }
+ </script>
+ </head>
+ <body>
+ <canvas id="testbed" width="1px" height="1px" style="width:50px; height:50px"></canvas>
+ <div id="description"></div>
+ <div id="console"></div>
+ <script>
+ description('Verify that culling works');
+ runTest();
+ successfullyParsed = true;
+ </script>
+ <script src="../../resources/js-test-post.js"></script>
+ </body>
+</html>
Property changes on: third_party/webgl/sdk/tests/conformance/rendering/culling.html
___________________________________________________________________
Added: svn:eol-style
+ LF
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