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|
<!--
Copyright (c) 2011 The Chromium Authors. All rights reserved.
Use of this source code is governed by a BSD-style license that can be
found in the LICENSE file.
-->
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>WebGL OES_vertex_array_object Conformance Tests</title>
<link rel="stylesheet" href="../../resources/js-test-style.css"/>
<script src="../../resources/desktop-gl-constants.js" type="text/javascript"></script>
<script src="../../resources/js-test-pre.js"></script>
<script src="../resources/webgl-test.js"></script>
<script src="../resources/webgl-test-utils.js"></script>
<!-- comment in the script tag below to test through JS emualation of the extension. -->
<!--
<script src="../../../demos/google/resources/OESVertexArrayObject.js"></script>
-->
</head>
<body>
<div id="description"></div>
<canvas id="canvas" style="width: 50px; height: 50px;"> </canvas>
<div id="console"></div>
<!-- Shaders for testing standard derivatives -->
<script>
description("This test verifies the functionality of the OES_vertex_array_object extension, if it is available.");
debug("");
var wtu = WebGLTestUtils;
var canvas = document.getElementById("canvas");
var gl = create3DContext(canvas);
var ext = null;
var vao = null;
if (!gl) {
testFailed("WebGL context does not exist");
} else {
testPassed("WebGL context exists");
// Setup emulated OESVertexArrayObject if it has been included.
if (window.setupVertexArrayObject) {
debug("using emuated OES_vertex_array_object");
setupVertexArrayObject(gl);
}
// Run tests with extension disabled
runBindingTestDisabled();
// Query the extension and store globally so shouldBe can access it
ext = gl.getExtension("OES_vertex_array_object");
if (!ext) {
testPassed("No OES_vertex_array_object support -- this is legal");
runSupportedTest(false);
} else {
testPassed("Successfully enabled OES_vertex_array_object extension");
runSupportedTest(true);
runBindingTestEnabled();
runObjectTest();
runAttributeTests();
runAttributeValueTests();
runDrawTests();
}
}
function runSupportedTest(extensionEnabled) {
var supported = gl.getSupportedExtensions();
if (supported.indexOf("OES_vertex_array_object") >= 0) {
if (extensionEnabled) {
testPassed("OES_vertex_array_object listed as supported and getExtension succeeded");
} else {
testFailed("OES_vertex_array_object listed as supported but getExtension failed");
}
} else {
if (extensionEnabled) {
testFailed("OES_vertex_array_object not listed as supported but getExtension succeeded");
} else {
testPassed("OES_vertex_array_object not listed as supported and getExtension failed -- this is legal");
}
}
}
function runBindingTestDisabled() {
debug("Testing binding enum with extension disabled");
// Use the constant directly as we don't have the extension
var VERTEX_ARRAY_BINDING_OES = 0x85B5;
gl.getParameter(VERTEX_ARRAY_BINDING_OES);
glErrorShouldBe(gl, gl.INVALID_ENUM, "VERTEX_ARRAY_BINDING_OES should not be queryable if extension is disabled");
}
function runBindingTestEnabled() {
debug("Testing binding enum with extension enabled");
shouldBe("ext.VERTEX_ARRAY_BINDING_OES", "0x85B5");
gl.getParameter(ext.VERTEX_ARRAY_BINDING_OES);
glErrorShouldBe(gl, gl.NO_ERROR, "VERTEX_ARRAY_BINDING_OES query should succeed if extension is enable");
// Default value is null
if (gl.getParameter(ext.VERTEX_ARRAY_BINDING_OES) === null) {
testPassed("Default value of VERTEX_ARRAY_BINDING_OES is null");
} else {
testFailed("Default value of VERTEX_ARRAY_BINDING_OES is not null");
}
debug("Testing binding a VAO");
var vao0 = ext.createVertexArrayOES();
var vao1 = ext.createVertexArrayOES();
shouldBeNull("gl.getParameter(ext.VERTEX_ARRAY_BINDING_OES)");
ext.bindVertexArrayOES(vao0);
if (gl.getParameter(ext.VERTEX_ARRAY_BINDING_OES) == vao0) {
testPassed("gl.getParameter(ext.VERTEX_ARRAY_BINDING_OES) is expected VAO");
} else {
testFailed("gl.getParameter(ext.VERTEX_ARRAY_BINDING_OES) is not expected VAO")
}
ext.bindVertexArrayOES(vao1);
if (gl.getParameter(ext.VERTEX_ARRAY_BINDING_OES) == vao1) {
testPassed("gl.getParameter(ext.VERTEX_ARRAY_BINDING_OES) is expected VAO");
} else {
testFailed("gl.getParameter(ext.VERTEX_ARRAY_BINDING_OES) is not expected VAO")
}
ext.deleteVertexArrayOES(vao1);
shouldBeNull("gl.getParameter(ext.VERTEX_ARRAY_BINDING_OES)");
ext.bindVertexArrayOES(vao1);
glErrorShouldBe(gl, gl.INVALID_OPERATION, "binding a deleted vertex array object");
ext.bindVertexArrayOES(null);
shouldBeNull("gl.getParameter(ext.VERTEX_ARRAY_BINDING_OES)");
ext.deleteVertexArrayOES(vao1);
}
function runObjectTest() {
debug("Testing object creation");
vao = ext.createVertexArrayOES();
glErrorShouldBe(gl, gl.NO_ERROR, "createVertexArrayOES should not set an error");
shouldBeNonNull("vao");
// Expect false if never bound
shouldBeFalse("ext.isVertexArrayOES(vao)");
ext.bindVertexArrayOES(vao);
shouldBeTrue("ext.isVertexArrayOES(vao)");
ext.bindVertexArrayOES(null);
shouldBeTrue("ext.isVertexArrayOES(vao)");
/*
* Issue found in the conformance test. The public webgl mailing list has been notified about it.
* The tests have already been fixed upstream.
*/
//shouldBeFalse("ext.isVertexArrayOES()");
shouldBeFalse("ext.isVertexArrayOES(null)");
ext.deleteVertexArrayOES(vao);
vao = null;
}
function runAttributeTests() {
debug("Testing attributes work across bindings");
var states = [];
var attrCount = gl.getParameter(gl.MAX_VERTEX_ATTRIBS);
for (var n = 0; n < attrCount; n++) {
gl.bindBuffer(gl.ARRAY_BUFFER, null);
gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, null);
var state = {};
states.push(state);
var vao = state.vao = ext.createVertexArrayOES();
ext.bindVertexArrayOES(vao);
if (n % 2 == 0) {
gl.enableVertexAttribArray(n);
} else {
gl.disableVertexAttribArray(n);
}
if (n % 2 == 0) {
var buffer = state.buffer = gl.createBuffer();
gl.bindBuffer(gl.ARRAY_BUFFER, buffer);
gl.bufferData(gl.ARRAY_BUFFER, 1024, gl.STATIC_DRAW);
gl.vertexAttribPointer(n, 1 + n % 4, gl.FLOAT, true, n * 4, n * 4);
}
if (n % 2 == 0) {
var elbuffer = state.elbuffer = gl.createBuffer();
gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, elbuffer);
gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, 1024, gl.STATIC_DRAW);
}
ext.bindVertexArrayOES(null);
}
var anyMismatch = false;
for (var n = 0; n < attrCount; n++) {
var state = states[n];
ext.bindVertexArrayOES(state.vao);
var isEnabled = gl.getVertexAttrib(n, gl.VERTEX_ATTRIB_ARRAY_ENABLED);
if ((n % 2 == 1) || isEnabled) {
// Valid
} else {
testFailed("VERTEX_ATTRIB_ARRAY_ENABLED not preserved");
anyMismatch = true;
}
var buffer = gl.getVertexAttrib(n, gl.VERTEX_ATTRIB_ARRAY_BUFFER_BINDING);
if (n % 2 == 0) {
if (buffer == state.buffer) {
// Matched
if ((gl.getVertexAttrib(n, gl.VERTEX_ATTRIB_ARRAY_SIZE) == 1 + n % 4) &&
(gl.getVertexAttrib(n, gl.VERTEX_ATTRIB_ARRAY_TYPE) == gl.FLOAT) &&
(gl.getVertexAttrib(n, gl.VERTEX_ATTRIB_ARRAY_NORMALIZED) == true) &&
(gl.getVertexAttrib(n, gl.VERTEX_ATTRIB_ARRAY_STRIDE) == n * 4) &&
(gl.getVertexAttribOffset(n, gl.VERTEX_ATTRIB_ARRAY_POINTER) == n * 4)) {
// Matched
} else {
testFailed("VERTEX_ATTRIB_ARRAY_* not preserved");
anyMismatch = true;
}
} else {
testFailed("VERTEX_ATTRIB_ARRAY_BUFFER_BINDING not preserved");
anyMismatch = true;
}
} else {
// GL_CURRENT_VERTEX_ATTRIB is not preserved
if (buffer) {
testFailed("VERTEX_ATTRIB_ARRAY_BUFFER_BINDING not preserved");
anyMismatch = true;
}
}
var elbuffer = gl.getParameter(gl.ELEMENT_ARRAY_BUFFER_BINDING);
if (n % 2 == 0) {
if (elbuffer == state.elbuffer) {
// Matched
} else {
testFailed("ELEMENT_ARRAY_BUFFER_BINDING not preserved");
anyMismatch = true;
}
} else {
if (elbuffer == null) {
// Matched
} else {
testFailed("ELEMENT_ARRAY_BUFFER_BINDING not preserved");
anyMismatch = true;
}
}
}
ext.bindVertexArrayOES(null);
if (!anyMismatch) {
testPassed("All attributes preserved across bindings");
}
for (var n = 0; n < attrCount; n++) {
var state = states[n];
ext.deleteVertexArrayOES(state.vao);
}
}
function runAttributeValueTests() {
debug("Testing that attribute values are not attached to bindings");
var v;
var vao0 = ext.createVertexArrayOES();
var anyFailed = false;
ext.bindVertexArrayOES(null);
gl.vertexAttrib4f(0, 0, 1, 2, 3);
v = gl.getVertexAttrib(0, gl.CURRENT_VERTEX_ATTRIB);
if (!(v[0] == 0 && v[1] == 1 && v[2] == 2 && v[3] == 3)) {
testFailed("Vertex attrib value not round-tripped?");
anyFailed = true;
}
ext.bindVertexArrayOES(vao0);
v = gl.getVertexAttrib(0, gl.CURRENT_VERTEX_ATTRIB);
if (!(v[0] == 0 && v[1] == 1 && v[2] == 2 && v[3] == 3)) {
testFailed("Vertex attrib value reset across bindings");
anyFailed = true;
}
gl.vertexAttrib4f(0, 4, 5, 6, 7);
ext.bindVertexArrayOES(null);
v = gl.getVertexAttrib(0, gl.CURRENT_VERTEX_ATTRIB);
if (!(v[0] == 4 && v[1] == 5 && v[2] == 6 && v[3] == 7)) {
testFailed("Vertex attrib value bound to buffer");
anyFailed = true;
}
if (!anyFailed) {
testPassed("Vertex attribute values are not attached to bindings")
}
ext.bindVertexArrayOES(null);
ext.deleteVertexArrayOES(vao0);
}
function runDrawTests() {
debug("Testing draws with various VAO bindings");
canvas.width = 50; canvas.height = 50;
gl.viewport(0, 0, canvas.width, canvas.height);
var vao0 = ext.createVertexArrayOES();
var vao1 = ext.createVertexArrayOES();
var program = wtu.setupSimpleTextureProgram(gl, 0, 1);
function setupQuad(s) {
var opt_positionLocation = 0;
var opt_texcoordLocation = 1;
var vertexObject = gl.createBuffer();
gl.bindBuffer(gl.ARRAY_BUFFER, vertexObject);
gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([
1.0 * s, 1.0 * s, 0.0,
-1.0 * s, 1.0 * s, 0.0,
-1.0 * s, -1.0 * s, 0.0,
1.0 * s, 1.0 * s, 0.0,
-1.0 * s, -1.0 * s, 0.0,
1.0 * s, -1.0 * s, 0.0]), gl.STATIC_DRAW);
gl.enableVertexAttribArray(opt_positionLocation);
gl.vertexAttribPointer(opt_positionLocation, 3, gl.FLOAT, false, 0, 0);
var vertexObject = gl.createBuffer();
gl.bindBuffer(gl.ARRAY_BUFFER, vertexObject);
gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([
1.0 * s, 1.0 * s,
0.0 * s, 1.0 * s,
0.0 * s, 0.0 * s,
1.0 * s, 1.0 * s,
0.0 * s, 0.0 * s,
1.0 * s, 0.0 * s]), gl.STATIC_DRAW);
gl.enableVertexAttribArray(opt_texcoordLocation);
gl.vertexAttribPointer(opt_texcoordLocation, 2, gl.FLOAT, false, 0, 0);
};
function readLocation(x, y) {
var pixels = new Uint8Array(1 * 1 * 4);
gl.readPixels(x, y, 1, 1, gl.RGBA, gl.UNSIGNED_BYTE, pixels);
return pixels;
};
function testPixel(blackList, whiteList) {
function testList(list, expected) {
for (var n = 0; n < list.length; n++) {
var l = list[n];
var x = -Math.floor(l * canvas.width / 2) + canvas.width / 2;
var y = -Math.floor(l * canvas.height / 2) + canvas.height / 2;
var source = readLocation(x, y);
if (Math.abs(source[0] - expected) > 2) {
return false;
}
}
return true;
}
return testList(blackList, 0) && testList(whiteList, 255);
};
function verifyDraw(drawNumber, s) {
wtu.drawQuad(gl);
var blackList = [];
var whiteList = [];
var points = [0.0, 0.2, 0.4, 0.6, 0.8, 1.0];
for (var n = 0; n < points.length; n++) {
if (points[n] <= s) {
blackList.push(points[n]);
} else {
whiteList.push(points[n]);
}
}
if (testPixel(blackList, whiteList)) {
testPassed("Draw " + drawNumber + " passed pixel test");
} else {
testFailed("Draw " + drawNumber + " failed pixel test");
}
};
// Setup all bindings
setupQuad(1);
ext.bindVertexArrayOES(vao0);
setupQuad(0.5);
ext.bindVertexArrayOES(vao1);
setupQuad(0.25);
// Verify drawing
ext.bindVertexArrayOES(null);
verifyDraw(0, 1);
ext.bindVertexArrayOES(vao0);
verifyDraw(1, 0.5);
ext.bindVertexArrayOES(vao1);
verifyDraw(2, 0.25);
ext.bindVertexArrayOES(null);
ext.deleteVertexArrayOES(vao0);
ext.deleteVertexArrayOES(vao1);
}
debug("");
successfullyParsed = true;
</script>
<script>finishTest();</script>
</body>
</html>
|
