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Unified Diff: third_party/webgl/conformance-suites/1.0.0/conformance/resources/webgl-test.js

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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Index: third_party/webgl/conformance-suites/1.0.0/conformance/resources/webgl-test.js
===================================================================
--- third_party/webgl/conformance-suites/1.0.0/conformance/resources/webgl-test.js (revision 121077)
+++ third_party/webgl/conformance-suites/1.0.0/conformance/resources/webgl-test.js (working copy)
@@ -1,758 +0,0 @@
-/*
-Copyright (C) 2009 Apple Computer, 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:
-1. Redistributions of source code must retain the above copyright
- notice, this list of conditions and the following disclaimer.
-2. 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.
-
-THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``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 APPLE COMPUTER, INC. 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.
-*/
-
-function webglTestLog(msg) {
- if (window.console && window.console.log) {
- window.console.log(msg);
- }
- if (document.getElementById("console")) {
- var log = document.getElementById("console");
- log.innerHTML += msg + "<br>";
- }
-}
-
-//
-// create3DContext
-//
-// Returns the WebGLRenderingContext for any known implementation.
-//
-function create3DContext(canvas, attributes)
-{
- if (!canvas)
- canvas = document.createElement("canvas");
- var context = null;
- try {
- context = canvas.getContext("webgl", attributes);
- } catch(e) {}
- if (!context) {
- try {
- context = canvas.getContext("experimental-webgl", attributes);
- } catch(e) {}
- }
- if (!context) {
- throw "Unable to fetch WebGL rendering context for Canvas";
- }
- return context;
-}
-
-function createGLErrorWrapper(context, fname) {
- return function() {
- var rv = context[fname].apply(context, arguments);
- var err = context.getError();
- if (err != 0)
- throw "GL error " + err + " in " + fname;
- return rv;
- };
-}
-
-function create3DContextWithWrapperThatThrowsOnGLError(canvas, attributes) {
- var context = create3DContext(canvas, attributes);
- // Thanks to Ilmari Heikkinen for the idea on how to implement this so elegantly.
- var wrap = {};
- for (var i in context) {
- try {
- if (typeof context[i] == 'function') {
- wrap[i] = createGLErrorWrapper(context, i);
- } else {
- wrap[i] = context[i];
- }
- } catch (e) {
- webglTestLog("createContextWrapperThatThrowsOnGLError: Error accessing " + i);
- }
- }
- wrap.getError = function() {
- return context.getError();
- };
- return wrap;
-}
-
-function getGLErrorAsString(ctx, err) {
- if (err === ctx.NO_ERROR) {
- return "NO_ERROR";
- }
- for (var name in ctx) {
- if (ctx[name] === err) {
- return name;
- }
- }
- return "0x" + err.toString(16);
-}
-
-function shouldGenerateGLError(ctx, glError, evalStr) {
- var exception;
- try {
- eval(evalStr);
- } catch (e) {
- exception = e;
- }
- if (exception) {
- testFailed(evalStr + " threw exception " + exception);
- } else {
- var err = ctx.getError();
- if (err != glError) {
- testFailed(evalStr + " expected: " + getGLErrorAsString(ctx, glError) + ". Was " + getGLErrorAsString(ctx, err) + ".");
- } else {
- testPassed(evalStr + " generated expected GL error: " + getGLErrorAsString(ctx, glError) + ".");
- }
- }
-}
-
-/**
- * Tests that the first error GL returns is the specified error.
- * @param {!WebGLContext} gl The WebGLContext to use.
- * @param {number} glError The expected gl error.
- * @param {string} opt_msg Optional additional message.
- */
-function glErrorShouldBe(gl, glError, opt_msg) {
- opt_msg = opt_msg || "";
- var err = gl.getError();
- if (err != glError) {
- testFailed("getError expected: " + getGLErrorAsString(gl, glError) +
- ". Was " + getGLErrorAsString(gl, err) + " : " + opt_msg);
- } else {
- testPassed("getError was expected value: " +
- getGLErrorAsString(gl, glError) + " : " + opt_msg);
- }
-};
-
-//
-// createProgram
-//
-// Create and return a program object, attaching each of the given shaders.
-//
-// If attribs are given, bind an attrib with that name at that index.
-//
-function createProgram(gl, vshaders, fshaders, attribs)
-{
- if (typeof(vshaders) == "string")
- vshaders = [vshaders];
- if (typeof(fshaders) == "string")
- fshaders = [fshaders];
-
- var shaders = [];
- var i;
-
- for (i = 0; i < vshaders.length; ++i) {
- var shader = loadShader(gl, vshaders[i], gl.VERTEX_SHADER);
- if (!shader)
- return null;
- shaders.push(shader);
- }
-
- for (i = 0; i < fshaders.length; ++i) {
- var shader = loadShader(gl, fshaders[i], gl.FRAGMENT_SHADER);
- if (!shader)
- return null;
- shaders.push(shader);
- }
-
- var prog = gl.createProgram();
- for (i = 0; i < shaders.length; ++i) {
- gl.attachShader(prog, shaders[i]);
- }
-
- if (attribs) {
- for (var i in attribs) {
- gl.bindAttribLocation(prog, parseInt(i), attribs[i]);
- }
- }
-
- gl.linkProgram(prog);
-
- // Check the link status
- var linked = gl.getProgramParameter(prog, gl.LINK_STATUS);
- if (!linked) {
- // something went wrong with the link
- var error = gl.getProgramInfoLog(prog);
- webglTestLog("Error in program linking:" + error);
-
- gl.deleteProgram(prog);
- for (i = 0; i < shaders.length; ++i)
- gl.deleteShader(shaders[i]);
- return null;
- }
-
- return prog;
-}
-
-//
-// initWebGL
-//
-// Initialize the Canvas element with the passed name as a WebGL object and return the
-// WebGLRenderingContext.
-//
-// Load shaders with the passed names and create a program with them. Return this program
-// in the 'program' property of the returned context.
-//
-// For each string in the passed attribs array, bind an attrib with that name at that index.
-// Once the attribs are bound, link the program and then use it.
-//
-// Set the clear color to the passed array (4 values) and set the clear depth to the passed value.
-// Enable depth testing and blending with a blend func of (SRC_ALPHA, ONE_MINUS_SRC_ALPHA)
-//
-function initWebGL(canvasName, vshader, fshader, attribs, clearColor, clearDepth, contextAttribs)
-{
- var canvas = document.getElementById(canvasName);
- var gl = create3DContext(canvas, contextAttribs);
- if (!gl) {
- alert("No WebGL context found");
- return null;
- }
-
- // Create the program object
- gl.program = createProgram(gl, vshader, fshader, attribs);
- if (!gl.program)
- return null;
-
- gl.useProgram(gl.program);
-
- gl.clearColor(clearColor[0], clearColor[1], clearColor[2], clearColor[3]);
- gl.clearDepth(clearDepth);
-
- gl.enable(gl.DEPTH_TEST);
- gl.enable(gl.BLEND);
- gl.blendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA);
-
- return gl;
-}
-
-//
-// getShaderSource
-//
-// Load the source from the passed shader file.
-//
-function getShaderSource(file)
-{
- var xhr = new XMLHttpRequest();
- xhr.open("GET", file, false);
- xhr.send();
- return xhr.responseText;
-}
-
-
-//
-// loadShader
-//
-// 'shader' is either the id of a <script> element containing the shader source
-// string, the shader string itself, or the URL of a file containing the shader
-// source. Load this shader and return the WebGLShader object corresponding to
-// it.
-//
-function loadShader(ctx, shaderId, shaderType, isFile)
-{
- var shaderSource = "";
-
- if (isFile)
- shaderSource = getShaderSource(shaderId);
- else {
- var shaderScript = document.getElementById(shaderId);
- if (!shaderScript) {
- shaderSource = shaderId;
- } else {
- if (shaderScript.type == "x-shader/x-vertex") {
- shaderType = ctx.VERTEX_SHADER;
- } else if (shaderScript.type == "x-shader/x-fragment") {
- shaderType = ctx.FRAGMENT_SHADER;
- } else if (shaderType != ctx.VERTEX_SHADER && shaderType != ctx.FRAGMENT_SHADER) {
- webglTestLog("*** Error: unknown shader type");
- return null;
- }
-
- shaderSource = shaderScript.text;
- }
- }
-
- // Create the shader object
- var shader = ctx.createShader(shaderType);
- if (shader == null) {
- webglTestLog("*** Error: unable to create shader '"+shaderId+"'");
- return null;
- }
-
- // Load the shader source
- ctx.shaderSource(shader, shaderSource);
-
- // Compile the shader
- ctx.compileShader(shader);
-
- // Check the compile status
- var compiled = ctx.getShaderParameter(shader, ctx.COMPILE_STATUS);
- if (!compiled) {
- // Something went wrong during compilation; get the error
- var error = ctx.getShaderInfoLog(shader);
- webglTestLog("*** Error compiling shader '"+shader+"':"+error);
- ctx.deleteShader(shader);
- return null;
- }
-
- return shader;
-}
-
-function loadShaderFromFile(ctx, file, type)
-{
- return loadShader(ctx, file, type, true);
-}
-
-function loadShaderFromScript(ctx, script)
-{
- return loadShader(ctx, script, 0, false);
-}
-
-function loadStandardProgram(context) {
- var program = context.createProgram();
- context.attachShader(program, loadStandardVertexShader(context));
- context.attachShader(program, loadStandardFragmentShader(context));
- context.linkProgram(program);
- return program;
-}
-
-function loadProgram(context, vertexShaderPath, fragmentShaderPath, isFile) {
- isFile = (isFile === undefined) ? true : isFile;
- var program = context.createProgram();
- context.attachShader(program, loadShader(context, vertexShaderPath, context.VERTEX_SHADER, isFile));
- context.attachShader(program, loadShader(context, fragmentShaderPath, context.FRAGMENT_SHADER, isFile));
- context.linkProgram(program);
- return program;
-}
-
-function loadStandardVertexShader(context) {
- return loadShader(context, "resources/vertexShader.vert", context.VERTEX_SHADER, true);
-}
-
-function loadStandardFragmentShader(context) {
- return loadShader(context, "resources/fragmentShader.frag", context.FRAGMENT_SHADER, true);
-}
-
-//
-// makeBox
-//
-// Create a box with vertices, normals and texCoords. Create VBOs for each as well as the index array.
-// Return an object with the following properties:
-//
-// normalObject WebGLBuffer object for normals
-// texCoordObject WebGLBuffer object for texCoords
-// vertexObject WebGLBuffer object for vertices
-// indexObject WebGLBuffer object for indices
-// numIndices The number of indices in the indexObject
-//
-function makeBox(ctx)
-{
- // box
- // v6----- v5
- // /| /|
- // v1------v0|
- // | | | |
- // | |v7---|-|v4
- // |/ |/
- // v2------v3
- //
- // vertex coords array
- var vertices = new Float32Array(
- [ 1, 1, 1, -1, 1, 1, -1,-1, 1, 1,-1, 1, // v0-v1-v2-v3 front
- 1, 1, 1, 1,-1, 1, 1,-1,-1, 1, 1,-1, // v0-v3-v4-v5 right
- 1, 1, 1, 1, 1,-1, -1, 1,-1, -1, 1, 1, // v0-v5-v6-v1 top
- -1, 1, 1, -1, 1,-1, -1,-1,-1, -1,-1, 1, // v1-v6-v7-v2 left
- -1,-1,-1, 1,-1,-1, 1,-1, 1, -1,-1, 1, // v7-v4-v3-v2 bottom
- 1,-1,-1, -1,-1,-1, -1, 1,-1, 1, 1,-1 ] // v4-v7-v6-v5 back
- );
-
- // normal array
- var normals = new Float32Array(
- [ 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, // v0-v1-v2-v3 front
- 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, // v0-v3-v4-v5 right
- 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, // v0-v5-v6-v1 top
- -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, // v1-v6-v7-v2 left
- 0,-1, 0, 0,-1, 0, 0,-1, 0, 0,-1, 0, // v7-v4-v3-v2 bottom
- 0, 0,-1, 0, 0,-1, 0, 0,-1, 0, 0,-1 ] // v4-v7-v6-v5 back
- );
-
-
- // texCoord array
- var texCoords = new Float32Array(
- [ 1, 1, 0, 1, 0, 0, 1, 0, // v0-v1-v2-v3 front
- 0, 1, 0, 0, 1, 0, 1, 1, // v0-v3-v4-v5 right
- 1, 0, 1, 1, 0, 1, 0, 0, // v0-v5-v6-v1 top
- 1, 1, 0, 1, 0, 0, 1, 0, // v1-v6-v7-v2 left
- 0, 0, 1, 0, 1, 1, 0, 1, // v7-v4-v3-v2 bottom
- 0, 0, 1, 0, 1, 1, 0, 1 ] // v4-v7-v6-v5 back
- );
-
- // index array
- var indices = new Uint8Array(
- [ 0, 1, 2, 0, 2, 3, // front
- 4, 5, 6, 4, 6, 7, // right
- 8, 9,10, 8,10,11, // top
- 12,13,14, 12,14,15, // left
- 16,17,18, 16,18,19, // bottom
- 20,21,22, 20,22,23 ] // back
- );
-
- var retval = { };
-
- retval.normalObject = ctx.createBuffer();
- ctx.bindBuffer(ctx.ARRAY_BUFFER, retval.normalObject);
- ctx.bufferData(ctx.ARRAY_BUFFER, normals, ctx.STATIC_DRAW);
-
- retval.texCoordObject = ctx.createBuffer();
- ctx.bindBuffer(ctx.ARRAY_BUFFER, retval.texCoordObject);
- ctx.bufferData(ctx.ARRAY_BUFFER, texCoords, ctx.STATIC_DRAW);
-
- retval.vertexObject = ctx.createBuffer();
- ctx.bindBuffer(ctx.ARRAY_BUFFER, retval.vertexObject);
- ctx.bufferData(ctx.ARRAY_BUFFER, vertices, ctx.STATIC_DRAW);
-
- ctx.bindBuffer(ctx.ARRAY_BUFFER, 0);
-
- retval.indexObject = ctx.createBuffer();
- ctx.bindBuffer(ctx.ELEMENT_ARRAY_BUFFER, retval.indexObject);
- ctx.bufferData(ctx.ELEMENT_ARRAY_BUFFER, indices, ctx.STATIC_DRAW);
- ctx.bindBuffer(ctx.ELEMENT_ARRAY_BUFFER, 0);
-
- retval.numIndices = indices.length;
-
- return retval;
-}
-
-//
-// makeSphere
-//
-// Create a sphere with the passed number of latitude and longitude bands and the passed radius.
-// Sphere has vertices, normals and texCoords. Create VBOs for each as well as the index array.
-// Return an object with the following properties:
-//
-// normalObject WebGLBuffer object for normals
-// texCoordObject WebGLBuffer object for texCoords
-// vertexObject WebGLBuffer object for vertices
-// indexObject WebGLBuffer object for indices
-// numIndices The number of indices in the indexObject
-//
-function makeSphere(ctx, radius, lats, longs)
-{
- var geometryData = [ ];
- var normalData = [ ];
- var texCoordData = [ ];
- var indexData = [ ];
-
- for (var latNumber = 0; latNumber <= lats; ++latNumber) {
- for (var longNumber = 0; longNumber <= longs; ++longNumber) {
- var theta = latNumber * Math.PI / lats;
- var phi = longNumber * 2 * Math.PI / longs;
- var sinTheta = Math.sin(theta);
- var sinPhi = Math.sin(phi);
- var cosTheta = Math.cos(theta);
- var cosPhi = Math.cos(phi);
-
- var x = cosPhi * sinTheta;
- var y = cosTheta;
- var z = sinPhi * sinTheta;
- var u = 1-(longNumber/longs);
- var v = latNumber/lats;
-
- normalData.push(x);
- normalData.push(y);
- normalData.push(z);
- texCoordData.push(u);
- texCoordData.push(v);
- geometryData.push(radius * x);
- geometryData.push(radius * y);
- geometryData.push(radius * z);
- }
- }
-
- longs += 1;
- for (var latNumber = 0; latNumber < lats; ++latNumber) {
- for (var longNumber = 0; longNumber < longs; ++longNumber) {
- var first = (latNumber * longs) + (longNumber % longs);
- var second = first + longs;
- indexData.push(first);
- indexData.push(second);
- indexData.push(first+1);
-
- indexData.push(second);
- indexData.push(second+1);
- indexData.push(first+1);
- }
- }
-
- var retval = { };
-
- retval.normalObject = ctx.createBuffer();
- ctx.bindBuffer(ctx.ARRAY_BUFFER, retval.normalObject);
- ctx.bufferData(ctx.ARRAY_BUFFER, new Float32Array(normalData), ctx.STATIC_DRAW);
-
- retval.texCoordObject = ctx.createBuffer();
- ctx.bindBuffer(ctx.ARRAY_BUFFER, retval.texCoordObject);
- ctx.bufferData(ctx.ARRAY_BUFFER, new Float32Array(texCoordData), ctx.STATIC_DRAW);
-
- retval.vertexObject = ctx.createBuffer();
- ctx.bindBuffer(ctx.ARRAY_BUFFER, retval.vertexObject);
- ctx.bufferData(ctx.ARRAY_BUFFER, new Float32Array(geometryData), ctx.STATIC_DRAW);
-
- retval.numIndices = indexData.length;
- retval.indexObject = ctx.createBuffer();
- ctx.bindBuffer(ctx.ELEMENT_ARRAY_BUFFER, retval.indexObject);
- ctx.bufferData(ctx.ELEMENT_ARRAY_BUFFER, new Uint16Array(indexData), ctx.STREAM_DRAW);
-
- return retval;
-}
-
-//
-// loadObj
-//
-// Load a .obj file from the passed URL. Return an object with a 'loaded' property set to false.
-// When the object load is complete, the 'loaded' property becomes true and the following
-// properties are set:
-//
-// normalObject WebGLBuffer object for normals
-// texCoordObject WebGLBuffer object for texCoords
-// vertexObject WebGLBuffer object for vertices
-// indexObject WebGLBuffer object for indices
-// numIndices The number of indices in the indexObject
-//
-function loadObj(ctx, url)
-{
- var obj = { loaded : false };
- obj.ctx = ctx;
- var req = new XMLHttpRequest();
- req.obj = obj;
- req.onreadystatechange = function () { processLoadObj(req) };
- req.open("GET", url, true);
- req.send(null);
- return obj;
-}
-
-function processLoadObj(req)
-{
- webglTestLog("req="+req)
- // only if req shows "complete"
- if (req.readyState == 4) {
- doLoadObj(req.obj, req.responseText);
- }
-}
-
-function doLoadObj(obj, text)
-{
- vertexArray = [ ];
- normalArray = [ ];
- textureArray = [ ];
- indexArray = [ ];
-
- var vertex = [ ];
- var normal = [ ];
- var texture = [ ];
- var facemap = { };
- var index = 0;
-
- var lines = text.split("\n");
- for (var lineIndex in lines) {
- var line = lines[lineIndex].replace(/[ \t]+/g, " ").replace(/\s\s*$/, "");
-
- // ignore comments
- if (line[0] == "#")
- continue;
-
- var array = line.split(" ");
- if (array[0] == "v") {
- // vertex
- vertex.push(parseFloat(array[1]));
- vertex.push(parseFloat(array[2]));
- vertex.push(parseFloat(array[3]));
- }
- else if (array[0] == "vt") {
- // normal
- texture.push(parseFloat(array[1]));
- texture.push(parseFloat(array[2]));
- }
- else if (array[0] == "vn") {
- // normal
- normal.push(parseFloat(array[1]));
- normal.push(parseFloat(array[2]));
- normal.push(parseFloat(array[3]));
- }
- else if (array[0] == "f") {
- // face
- if (array.length != 4) {
- webglTestLog("*** Error: face '"+line+"' not handled");
- continue;
- }
-
- for (var i = 1; i < 4; ++i) {
- if (!(array[i] in facemap)) {
- // add a new entry to the map and arrays
- var f = array[i].split("/");
- var vtx, nor, tex;
-
- if (f.length == 1) {
- vtx = parseInt(f[0]) - 1;
- nor = vtx;
- tex = vtx;
- }
- else if (f.length = 3) {
- vtx = parseInt(f[0]) - 1;
- tex = parseInt(f[1]) - 1;
- nor = parseInt(f[2]) - 1;
- }
- else {
- webglTestLog("*** Error: did not understand face '"+array[i]+"'");
- return null;
- }
-
- // do the vertices
- var x = 0;
- var y = 0;
- var z = 0;
- if (vtx * 3 + 2 < vertex.length) {
- x = vertex[vtx*3];
- y = vertex[vtx*3+1];
- z = vertex[vtx*3+2];
- }
- vertexArray.push(x);
- vertexArray.push(y);
- vertexArray.push(z);
-
- // do the textures
- x = 0;
- y = 0;
- if (tex * 2 + 1 < texture.length) {
- x = texture[tex*2];
- y = texture[tex*2+1];
- }
- textureArray.push(x);
- textureArray.push(y);
-
- // do the normals
- x = 0;
- y = 0;
- z = 1;
- if (nor * 3 + 2 < normal.length) {
- x = normal[nor*3];
- y = normal[nor*3+1];
- z = normal[nor*3+2];
- }
- normalArray.push(x);
- normalArray.push(y);
- normalArray.push(z);
-
- facemap[array[i]] = index++;
- }
-
- indexArray.push(facemap[array[i]]);
- }
- }
- }
-
- // set the VBOs
- obj.normalObject = obj.ctx.createBuffer();
- obj.ctx.bindBuffer(obj.ctx.ARRAY_BUFFER, obj.normalObject);
- obj.ctx.bufferData(obj.ctx.ARRAY_BUFFER, new Float32Array(normalArray), obj.ctx.STATIC_DRAW);
-
- obj.texCoordObject = obj.ctx.createBuffer();
- obj.ctx.bindBuffer(obj.ctx.ARRAY_BUFFER, obj.texCoordObject);
- obj.ctx.bufferData(obj.ctx.ARRAY_BUFFER, new Float32Array(textureArray), obj.ctx.STATIC_DRAW);
-
- obj.vertexObject = obj.ctx.createBuffer();
- obj.ctx.bindBuffer(obj.ctx.ARRAY_BUFFER, obj.vertexObject);
- obj.ctx.bufferData(obj.ctx.ARRAY_BUFFER, new Float32Array(vertexArray), obj.ctx.STATIC_DRAW);
-
- obj.numIndices = indexArray.length;
- obj.indexObject = obj.ctx.createBuffer();
- obj.ctx.bindBuffer(obj.ctx.ELEMENT_ARRAY_BUFFER, obj.indexObject);
- obj.ctx.bufferData(obj.ctx.ELEMENT_ARRAY_BUFFER, new Uint16Array(indexArray), obj.ctx.STREAM_DRAW);
-
- obj.loaded = true;
-}
-
-//
-// loadImageTexture
-//
-// Load the image at the passed url, place it in a new WebGLTexture object and return the WebGLTexture.
-//
-function loadImageTexture(ctx, url)
-{
- var texture = ctx.createTexture();
- texture.image = new Image();
- texture.image.onload = function() { doLoadImageTexture(ctx, texture.image, texture) }
- texture.image.src = url;
- return texture;
-}
-
-function doLoadImageTexture(ctx, image, texture)
-{
- ctx.enable(ctx.TEXTURE_2D);
- ctx.bindTexture(ctx.TEXTURE_2D, texture);
- ctx.texImage2D(ctx.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, image);
- ctx.texParameteri(ctx.TEXTURE_2D, ctx.TEXTURE_MAG_FILTER, ctx.LINEAR);
- ctx.texParameteri(ctx.TEXTURE_2D, ctx.TEXTURE_MIN_FILTER, ctx.LINEAR_MIPMAP_LINEAR);
- ctx.texParameteri(ctx.TEXTURE_2D, ctx.TEXTURE_WRAP_S, ctx.CLAMP_TO_EDGE);
- ctx.texParameteri(ctx.TEXTURE_2D, ctx.TEXTURE_WRAP_T, ctx.CLAMP_TO_EDGE);
- ctx.generateMipmap(ctx.TEXTURE_2D)
- ctx.bindTexture(ctx.TEXTURE_2D, 0);
-}
-
-//
-// Framerate object
-//
-// This object keeps track of framerate and displays it as the innerHTML text of the
-// HTML element with the passed id. Once created you call snapshot at the end
-// of every rendering cycle. Every 500ms the framerate is updated in the HTML element.
-//
-Framerate = function(id)
-{
- this.numFramerates = 10;
- this.framerateUpdateInterval = 500;
- this.id = id;
-
- this.renderTime = -1;
- this.framerates = [ ];
- self = this;
- var fr = function() { self.updateFramerate() }
- setInterval(fr, this.framerateUpdateInterval);
-}
-
-Framerate.prototype.updateFramerate = function()
-{
- var tot = 0;
- for (var i = 0; i < this.framerates.length; ++i)
- tot += this.framerates[i];
-
- var framerate = tot / this.framerates.length;
- framerate = Math.round(framerate);
- document.getElementById(this.id).innerHTML = "Framerate:"+framerate+"fps";
-}
-
-Framerate.prototype.snapshot = function()
-{
- if (this.renderTime < 0)
- this.renderTime = new Date().getTime();
- else {
- var newTime = new Date().getTime();
- var t = newTime - this.renderTime;
- var framerate = 1000/t;
- this.framerates.push(framerate);
- while (this.framerates.length > this.numFramerates)
- this.framerates.shift();
- this.renderTime = newTime;
- }
-}
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