summaryrefslogtreecommitdiffstats
path: root/o3d/samples/culling.html
diff options
context:
space:
mode:
authorgspencer@google.com <gspencer@google.com@0039d316-1c4b-4281-b951-d872f2087c98>2009-05-27 23:15:42 +0000
committergspencer@google.com <gspencer@google.com@0039d316-1c4b-4281-b951-d872f2087c98>2009-05-27 23:15:42 +0000
commit05b47f7a8c5451f858dc220df0e3a97542edace6 (patch)
treea2273d619f0625c9d44d40842845ccce2eac1045 /o3d/samples/culling.html
parent5cdc8bdb4c847cefe7f4542bd10c9880c2c557a0 (diff)
downloadchromium_src-05b47f7a8c5451f858dc220df0e3a97542edace6.zip
chromium_src-05b47f7a8c5451f858dc220df0e3a97542edace6.tar.gz
chromium_src-05b47f7a8c5451f858dc220df0e3a97542edace6.tar.bz2
This is the O3D source tree's initial commit to the Chromium tree. It
is not built or referenced at all by the chrome build yet, and doesn't yet build in it's new home. We'll change that shortly. git-svn-id: svn://svn.chromium.org/chrome/trunk/src@17035 0039d316-1c4b-4281-b951-d872f2087c98
Diffstat (limited to 'o3d/samples/culling.html')
-rw-r--r--o3d/samples/culling.html340
1 files changed, 340 insertions, 0 deletions
diff --git a/o3d/samples/culling.html b/o3d/samples/culling.html
new file mode 100644
index 0000000..f1d3566
--- /dev/null
+++ b/o3d/samples/culling.html
@@ -0,0 +1,340 @@
+<!--
+Copyright 2009, Google Inc.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+ * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+ * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+-->
+
+<!--
+O3D Culling.
+
+Make sure things off screen get culled.
+
+By default nothing is culled. If you want object to be culled you must setup
+bounding boxes in the transform graph that fit the needs of your application
+and then turn on culling for those objects you want culled.
+-->
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
+ "http://www.w3.org/TR/html4/loose.dtd">
+<html>
+<head>
+<meta http-equiv="content-type" content="text/html; charset=UTF-8">
+<title>
+Culling.
+</title>
+<!-- Include sample javascript library functions-->
+<script type="text/javascript" src="o3djs/base.js"></script>
+
+<!-- Our javascript code -->
+<script type="text/javascript">
+o3djs.require('o3djs.util');
+o3djs.require('o3djs.math');
+o3djs.require('o3djs.rendergraph');
+o3djs.require('o3djs.primitives');
+o3djs.require('o3djs.effect');
+
+// global variables
+var g_timeMult = 1.0;
+var g_framesRendered = 0;
+var g_o3d;
+var g_math;
+var g_client;
+var g_viewInfo;
+var g_pack;
+var g_totalTransformsElement;
+var g_transformsProcessedElement;
+var g_transformsCulledElement;
+var g_totalDrawElementsElement;
+var g_totalDrawableThingsElement;
+var g_drawElementsProcessedElement;
+var g_drawElementsCulledElement;
+var g_drawElementsRenderedElement;
+var g_primitivesRenderedElement;
+var g_groupTransforms = [];
+var GROUPS_ACROSS = 2;
+var UNITS_ACROSS_GROUP = 2;
+var TOTAL_ACROSS = GROUPS_ACROSS * UNITS_ACROSS_GROUP;
+var HALF_WIDTH = TOTAL_ACROSS * 0.0;
+var UNIT_SPACING = 200;
+
+function createInstances(pack, shape) {
+ // Make a grid of transforms and put a shape instance on each one.
+ for (var g = 0; g < GROUPS_ACROSS; g++) {
+ for (var h = 0; h < GROUPS_ACROSS; h++) {
+ for (var i = 0; i < GROUPS_ACROSS; i++) {
+ var groupTransform = pack.createObject('Transform');
+ g_groupTransforms[g_groupTransforms.length] = groupTransform;
+ groupTransform.parent = g_client.root;
+ // Turn on culling for this transform.
+ groupTransform.cull = true;
+ var boundingBox = g_o3d.BoundingBox([0, 0, 0],
+ [0, 0, 0]);
+ groupTransform.translate(
+ (g * UNITS_ACROSS_GROUP - HALF_WIDTH) * UNIT_SPACING,
+ (h * UNITS_ACROSS_GROUP - HALF_WIDTH) * UNIT_SPACING,
+ (i * UNITS_ACROSS_GROUP - HALF_WIDTH) * UNIT_SPACING);
+
+ for (var x = 0; x < UNITS_ACROSS_GROUP; x++) {
+ for (var y = 0; y < UNITS_ACROSS_GROUP; y++) {
+ for (var z = 0; z < UNITS_ACROSS_GROUP; z++) {
+ var transform = pack.createObject('Transform');
+ transform.parent = groupTransform;
+ // Turn on culling for this transform.
+ transform.cull = true;
+ transform.addShape(shape);
+ // Add up the bounding boxes of all the elements.
+ var elements = shape.elements;
+ var box = elements[0].boundingBox;
+ for (var ee = 1; ee < elements.length; ee++) {
+ box = box.add(elements[ee].boundingBox);
+ }
+ // Set the transform to have a bounding box that is the sum
+ // of all the elements under it.
+ transform.boundingBox = box;
+ transform.translate(
+ (x - UNITS_ACROSS_GROUP * 0.5) * UNIT_SPACING,
+ (y - UNITS_ACROSS_GROUP * 0.5) * UNIT_SPACING,
+ (z - UNITS_ACROSS_GROUP * 0.5) * UNIT_SPACING);
+ transform.createParam('colorMult', 'ParamFloat4').value = [
+ (g * UNITS_ACROSS_GROUP + x) * (1 / TOTAL_ACROSS),
+ (h * UNITS_ACROSS_GROUP + y) * (1 / TOTAL_ACROSS),
+ (i * UNITS_ACROSS_GROUP + z) * (1 / TOTAL_ACROSS),
+ 1];
+ // Add the box for this bounding box to the box for the group.
+ var box = transform.boundingBox.mul(transform.localMatrix);
+ boundingBox = boundingBox.add(box);
+
+ }
+ }
+ }
+ // Set the bounding box for the group transform to encompass all
+ // the transforms below it.
+ groupTransform.boundingBox = boundingBox;
+ }
+ }
+ }
+}
+
+/**
+ * Creates the client area.
+ */
+function init() {
+ // These are here so that they are visible to both the browser (so
+ // selenium sees them) and the embedded V8 engine.
+ window.g_clock = 0;
+ window.g_timeMult = 1;
+ window.g_finished = false; // for selenium testing.
+
+ // Comment out the line below to run the sample in the browser
+ // JavaScript engine. This may be helpful for debugging.
+ o3djs.util.setMainEngine(o3djs.util.Engine.V8);
+
+ o3djs.util.makeClients(initStep2);
+}
+
+/**
+ * Initializes O3D and creates one shape.
+ * @param {Array} clientElements Array of o3d object elements.
+ */
+function initStep2(clientElements) {
+ // Initializes global variables and libraries.
+ var o3dElement = clientElements[0];
+ g_o3d = o3dElement.o3d;
+ g_math = o3djs.math;
+
+ // Set window.g_client as well. Otherwise when the sample runs in
+ // V8, selenium won't be able to find this variable (it can only see
+ // the browser environment).
+ window.g_client = g_client = o3dElement.client;
+
+ g_totalDrawableThingsElement =
+ o3djs.util.getElementById('totalDrawableThings');
+ g_totalTransformsElement =
+ o3djs.util.getElementById('totalTransforms');
+ g_transformsProcessedElement =
+ o3djs.util.getElementById('transformsProcessed');
+ g_transformsCulledElement =
+ o3djs.util.getElementById('transformsCulled');
+ g_totalDrawElementsElement =
+ o3djs.util.getElementById('totalDrawElements');
+ g_drawElementsProcessedElement =
+ o3djs.util.getElementById('drawElementsProcessed');
+ g_drawElementsCulledElement =
+ o3djs.util.getElementById('drawElementsCulled');
+ g_drawElementsRenderedElement =
+ o3djs.util.getElementById('drawElementsRendered');
+ g_primitivesRenderedElement =
+ o3djs.util.getElementById('primitivesRendered');
+
+ // Creates a pack to manage our resources/assets
+ g_pack = g_client.createPack();
+
+ g_viewInfo = o3djs.rendergraph.createBasicView(
+ g_pack,
+ g_client.root,
+ g_client.renderGraphRoot);
+
+ // Create our projection matrix, with a vertical field of view of 45
+ // degrees a near clipping plane of 0.1 and far clipping plane of 10000.
+ g_viewInfo.drawContext.projection = g_math.matrix4.perspective(
+ g_math.degToRad(45),
+ g_client.width / g_client.height,
+ 0.1,
+ 10000);
+
+ // Create and load the effect.
+ var effect = g_pack.createObject('Effect');
+ o3djs.effect.loadEffect(effect, 'shaders/phong-with-colormult.shader');
+
+ // Create a Material for the effect.
+ var material = g_pack.createObject('Material');
+
+ // Apply our effect to this material.
+ material.effect = effect;
+
+ // Set the material's drawList for opaque objects.
+ material.drawList = g_viewInfo.performanceDrawList;
+
+ // Create the parameters the effect needs on the material.
+ effect.createUniformParameters(material);
+
+ // Set the material parameters.
+ material.getParam('lightWorldPos').value = [1000, 1000, 0];
+ material.getParam('lightIntensity').value = [1, 1, 1, 1];
+ material.getParam('ambientIntensity').value = [0.1, 0.1, 0.1, 1];
+ material.getParam('ambient').value = [1, 1, 1, 1];
+ material.getParam('diffuse').value = [1, 1, 1, 1];
+ material.getParam('specular').value = [0.5, 0.5, 0.5, 1];
+ material.getParam('shininess').value = 50;
+
+ // Create 2 spheres.
+ var shape1 = o3djs.primitives.createSphere(
+ g_pack,
+ material,
+ 40,
+ 20,
+ 20,
+ g_math.matrix4.translation([-50, 0, 0]));
+
+ var shape2 = o3djs.primitives.createSphere(
+ g_pack,
+ material,
+ 20,
+ 20,
+ 20,
+ g_math.matrix4.translation([50, 0, 0]));
+ // Create a shape and move the 2 sphere primitives to the same shape.
+ // This is done to show that each of the primitives under the shape
+ // will get culled separately.
+ var shape = g_pack.createObject('Shape');
+ shape1.elements[0].owner = shape;
+ shape2.elements[0].owner = shape;
+ // delete the old shapes.
+ g_pack.removeObject(shape1);
+ g_pack.removeObject(shape2);
+ var elements = shape.elements;
+ // Turn on culling for the two sphere elements.
+ elements[0].cull = true;
+ elements[1].cull = true;
+
+ createInstances(g_pack, shape);
+
+ g_totalDrawableThingsElement.innerHTML =
+ GROUPS_ACROSS * UNITS_ACROSS_GROUP *
+ GROUPS_ACROSS * UNITS_ACROSS_GROUP *
+ GROUPS_ACROSS * UNITS_ACROSS_GROUP;
+
+ g_totalDrawElementsElement.innerHTML = g_client.getObjectsByClassName(
+ 'o3d.DrawElement').length;
+ g_totalTransformsElement.innerHTML = g_client.getObjectsByClassName(
+ 'o3d.Transform').length;
+
+ // Setup an onrender callback for animation.
+ g_client.setRenderCallback(onrender);
+
+ window.g_finished = true; // for selenium testing.
+}
+
+// spin the camera.
+function onrender(renderEvent) {
+ g_framesRendered++;
+ // Get the number of seconds since the last render.
+ var elapsedTime = renderEvent.elapsedTime;
+
+ // Update g_clock in the browser and cache a V8 copy that can be
+ // accessed efficiently. g_clock must be in the browser for selenium.
+ var clock = window.g_clock + elapsedTime * window.g_timeMult;
+ window.g_clock = clock;
+
+ var x = Math.sin(clock * 0.1) * 300;
+ var z = Math.cos(clock * 0.1) * 300;
+ var y = Math.sin(clock * 0.2) * 300;
+
+ g_viewInfo.drawContext.view = g_math.matrix4.lookAt(
+ [x, y, z],
+ [0, 0, 0],
+ [0, 1, 0]);
+
+ g_transformsProcessedElement.innerHTML = renderEvent.transformsProcessed;
+ g_transformsCulledElement.innerHTML = renderEvent.transformsCulled;
+ g_drawElementsProcessedElement.innerHTML = renderEvent.drawElementsProcessed;
+ g_drawElementsCulledElement.innerHTML = renderEvent.drawElementsCulled;
+ g_drawElementsRenderedElement.innerHTML = renderEvent.drawElementsRendered;
+ g_primitivesRenderedElement.innerHTML = renderEvent.primitivesRendered;
+}
+
+/**
+ * Remove any callbacks so they don't get called after the page has unloaded.
+ */
+function unload() {
+ if (g_client) {
+ g_client.cleanup();
+ }
+}
+
+</script>
+</head>
+<body onload="init()" onunload="unload()">
+<h1>Culling</h1>
+Objects off screen should get culled.
+<br/>
+<!-- Start of O3D plugin -->
+<div id="o3d" style="width: 800px; height: 600px;"></div>
+<!-- End of O3D plugin -->
+<table>
+<tr><td>Total Drawable Things:</td><td><span id="totalDrawableThings">-</span></td></tr>
+<tr><td>Total Transforms:</td><td><span id="totalTransforms">-</span></td></tr>
+<tr><td>Transforms Processed:</td><td><span id="transformsProcessed">-</span></td></tr>
+<tr><td>Transforms Culled:</td><td><span id="transformsCulled">-</span></td></tr>
+<tr><td>Total DrawElements:</td><td><span id="totalDrawElements">-</span></td></tr>
+<tr><td>DrawElements Processed:</td><td><span id="drawElementsProcessed">-</span></td></tr>
+<tr><td>DrawElements Culled:</td><td><span id="drawElementsCulled">-</span></td></tr>
+<tr><td>DrawElements Rendered:</td><td><span id="drawElementsRendered">-</span></td></tr>
+<tr><td>Primitives Rendered:</td><td><span id="primitivesRendered">-</span></td></tr>
+</table>
+</body>
+</html>
generated by cgit v1.1 at 2025-02-14 01:31:56 +0000