diff options
Diffstat (limited to 'WebCore/manual-tests/webgl')
| -rw-r--r-- | WebCore/manual-tests/webgl/Earth.html | 166 | ||||
| -rw-r--r-- | WebCore/manual-tests/webgl/ManyPlanetsDeep.html | 202 | ||||
| -rw-r--r-- | WebCore/manual-tests/webgl/SpinningBox.html | 149 | ||||
| -rw-r--r-- | WebCore/manual-tests/webgl/TeapotPerPixel.html | 332 | ||||
| -rw-r--r-- | WebCore/manual-tests/webgl/TeapotPerVertex.html | 305 | ||||
| -rw-r--r-- | WebCore/manual-tests/webgl/resources/CanvasMatrix.js | 698 | ||||
| -rw-r--r-- | WebCore/manual-tests/webgl/resources/earthmap1k.jpg | bin | 0 -> 344080 bytes | |||
| -rw-r--r-- | WebCore/manual-tests/webgl/resources/mars500x250.png | bin | 0 -> 174308 bytes | |||
| -rw-r--r-- | WebCore/manual-tests/webgl/resources/teapot.obj | 2866 | ||||
| -rw-r--r-- | WebCore/manual-tests/webgl/resources/utils3d.js | 531 |
10 files changed, 5249 insertions, 0 deletions
diff --git a/WebCore/manual-tests/webgl/Earth.html b/WebCore/manual-tests/webgl/Earth.html new file mode 100644 index 0000000..fa59a20 --- /dev/null +++ b/WebCore/manual-tests/webgl/Earth.html @@ -0,0 +1,166 @@ +<!DOCTYPE html> +<html> + <head> + <title>Canvas3d example</title> + <script src="resources/CanvasMatrix.js"> </script> + <script src="resources/utils3d.js"> </script> + + <script id="vshader" type="x-shader/x-vertex"> + uniform mat4 u_modelViewMatrix; + uniform mat4 u_modelViewProjMatrix; + uniform mat4 u_normalMatrix; + uniform vec3 lightDir; + + attribute vec3 vNormal; + attribute vec4 vTexCoord; + attribute vec4 vPosition; + + varying float v_Dot; + varying vec2 v_texCoord; + + void main() + { + gl_Position = u_modelViewProjMatrix * vPosition; + v_texCoord = vTexCoord.st; + vec4 transNormal = u_normalMatrix * vec4(vNormal,1); + v_Dot = max(dot(transNormal.xyz, lightDir), 0.0); + } + </script> + + <script id="fshader" type="x-shader/x-fragment"> + uniform sampler2D sampler2d; + + varying float v_Dot; + varying vec2 v_texCoord; + + void main() + { + vec4 color = texture2D(sampler2d,v_texCoord); + color += vec4(0.1,0.1,0.1,1); + gl_FragColor = vec4(color.xyz * v_Dot, color.a); + } + </script> + + <script> + function init() + { + var gl = initWebGL("example", "vshader", "fshader", + [ "vNormal", "vTexCoord", "vPosition"], + [ 0, 0, 0, 1 ], 10000); + + gl.uniform3f(gl.getUniformLocation(gl.program, "lightDir"), 0, 0, 1); + gl.uniform1i(gl.getUniformLocation(gl.program, "sampler2d"), 0); + + gl.enable(gl.TEXTURE_2D); + + gl.sphere = makeSphere(gl, 1, 30, 30); + + // get the images + earthTexture = loadImageTexture(gl, "resources/earthmap1k.jpg"); + marsTexture = loadImageTexture(gl, "resources/mars500x250.png"); + + return gl; + } + + width = -1; + height = -1; + + function reshape(ctx) + { + var canvas = document.getElementById('example'); + if (canvas.clientWidth == width && canvas.clientHeight == height) + return; + + width = canvas.clientWidth; + height = canvas.clientHeight; + + ctx.viewport(0, 0, width, height); + + ctx.perspectiveMatrix = new CanvasMatrix4(); + ctx.perspectiveMatrix.lookat(0,0,6, 0, 0, 0, 0, 1, 0); + ctx.perspectiveMatrix.perspective(30, width/height, 1, 10000); + } + + function drawOne(ctx, angle, x, y, z, scale, texture) + { + // setup VBOs + ctx.enableVertexAttribArray(0); + ctx.enableVertexAttribArray(1); + ctx.enableVertexAttribArray(2); + + ctx.bindBuffer(ctx.ARRAY_BUFFER, ctx.sphere.vertexObject); + ctx.vertexAttribPointer(2, 3, ctx.FLOAT, false, 0, 0); + + ctx.bindBuffer(ctx.ARRAY_BUFFER, ctx.sphere.normalObject); + ctx.vertexAttribPointer(0, 3, ctx.FLOAT, false, 0, 0); + + ctx.bindBuffer(ctx.ARRAY_BUFFER, ctx.sphere.texCoordObject); + ctx.vertexAttribPointer(1, 2, ctx.FLOAT, false, 0, 0); + + ctx.bindBuffer(ctx.ELEMENT_ARRAY_BUFFER, ctx.sphere.indexObject); + + // generate the model-view matrix + var mvMatrix = new CanvasMatrix4(); + mvMatrix.scale(scale, scale, scale); + mvMatrix.rotate(angle, 0,1,0); + mvMatrix.rotate(30, 1,0,0); + mvMatrix.translate(x,y,z); + ctx.uniformMatrix4fv(ctx.getUniformLocation(ctx.program, "u_modelViewMatrix"), false, mvMatrix.getAsCanvasFloatArray()); + + // construct the normal matrix from the model-view matrix + var normalMatrix = new CanvasMatrix4(mvMatrix); + normalMatrix.invert(); + normalMatrix.transpose(); + ctx.uniformMatrix4fv(ctx.getUniformLocation(ctx.program, "u_normalMatrix"), false, normalMatrix.getAsCanvasFloatArray()); + + // construct the model-view * projection matrix + var mvpMatrix = new CanvasMatrix4(mvMatrix); + mvpMatrix.multRight(ctx.perspectiveMatrix); + ctx.uniformMatrix4fv(ctx.getUniformLocation(ctx.program, "u_modelViewProjMatrix"), false, mvpMatrix.getAsCanvasFloatArray()); + + ctx.bindTexture(ctx.TEXTURE_2D, texture); + ctx.drawElements(ctx.TRIANGLES, ctx.sphere.numIndices, ctx.UNSIGNED_SHORT, 0); + } + + function drawPicture(ctx) + { + reshape(ctx); + ctx.clear(ctx.COLOR_BUFFER_BIT | ctx.DEPTH_BUFFER_BIT); + + drawOne(ctx, currentAngle, -1, 0, 0, 1, earthTexture); + drawOne(ctx, -currentAngle, 1, 0, 0, 0.6, marsTexture); + ctx.flush(); + + framerate.snapshot(); + + currentAngle += incAngle; + if (currentAngle > 360) + currentAngle -= 360; + } + + function start() + { + var ctx = init(); + currentAngle = 0; + incAngle = 0.2; + var f = function() { drawPicture(ctx) }; + setInterval(f, 10); + framerate = new Framerate("framerate"); + } + </script> + <style type="text/css"> + canvas { + border: 2px solid black; + width:90%; + height:90%; + } + </style> + </head> + <body onload="start()"> + <canvas id="example"> + There is supposed to be an example drawing here, but it's not important. + </canvas> + <div id="framerate"></div> + <div id="console"></div> + </body> +</html> diff --git a/WebCore/manual-tests/webgl/ManyPlanetsDeep.html b/WebCore/manual-tests/webgl/ManyPlanetsDeep.html new file mode 100644 index 0000000..e5bb773 --- /dev/null +++ b/WebCore/manual-tests/webgl/ManyPlanetsDeep.html @@ -0,0 +1,202 @@ +<!DOCTYPE html> +<html> + <head> + <title>Canvas3d example</title> + <script src="resources/CanvasMatrix.js"> </script> + <script src="resources/utils3d.js"> </script> + + <script id="vshader" type="x-shader/x-vertex"> + uniform mat4 u_modelViewMatrix; + uniform mat4 u_modelViewProjMatrix; + uniform mat4 u_normalMatrix; + uniform vec3 lightDir; + + attribute vec3 vNormal; + attribute vec4 vTexCoord; + attribute vec4 vPosition; + + varying float v_Dot; + varying vec2 v_texCoord; + + void main() + { + gl_Position = u_modelViewProjMatrix * vPosition; + v_texCoord = vTexCoord.st; + vec4 transNormal = u_normalMatrix * vec4(vNormal,1); + v_Dot = max(dot(transNormal.xyz, lightDir), 0.0); + } + </script> + + <script id="fshader" type="x-shader/x-fragment"> + uniform sampler2D sampler2d; + + varying float v_Dot; + varying vec2 v_texCoord; + + void main() + { + vec4 color = texture2D(sampler2d,v_texCoord); + color += vec4(0.1,0.1,0.1,1); + gl_FragColor = vec4(color.xyz * v_Dot, color.a); + } + </script> + + <script> + const numRowCols = 4; + const numLayers = 3; + const layoutWidth = 10; + const layoutHeight = 8; + const globeSize = 25; + const minIncAngle = 0.2; + const maxIncAngle = 2; + + function init() + { + var gl = initWebGL("example", "vshader", "fshader", + [ "vNormal", "vTexCoord", "vPosition"], + [ 0, 0, 0, 1 ], 10000); + + gl.uniform3f(gl.getUniformLocation(gl.program, "lightDir"), 0, 0, 1); + gl.uniform1i(gl.getUniformLocation(gl.program, "sampler2d"), 0); + + gl.enable(gl.TEXTURE_2D); + + gl.sphere = makeSphere(gl, 1, 30, 30); + + // get the images + earthTexture = loadImageTexture(gl, "resources/earthmap1k.jpg"); + marsTexture = loadImageTexture(gl, "resources/mars500x250.png"); + + return gl; + } + + width = -1; + height = -1; + + function reshape(ctx) + { + var canvas = document.getElementById('example'); + if (canvas.clientWidth == width && canvas.clientHeight == height) + return; + + width = canvas.clientWidth; + height = canvas.clientHeight; + + ctx.viewport(0, 0, width, height); + + ctx.perspectiveMatrix = new CanvasMatrix4(); + ctx.perspectiveMatrix.lookat(0,0,20, 0, 0, 0, 0, 1, 0); + ctx.perspectiveMatrix.perspective(30, width/height, 1, 10000); + } + + function drawOne(ctx, angle, x, y, z, scale, texture) + { + // setup VBOs + ctx.enableVertexAttribArray(0); + ctx.enableVertexAttribArray(1); + ctx.enableVertexAttribArray(2); + + ctx.bindBuffer(ctx.ARRAY_BUFFER, ctx.sphere.vertexObject); + ctx.vertexAttribPointer(2, 3, ctx.FLOAT, false, 0, 0); + + ctx.bindBuffer(ctx.ARRAY_BUFFER, ctx.sphere.normalObject); + ctx.vertexAttribPointer(0, 3, ctx.FLOAT, false, 0, 0); + + ctx.bindBuffer(ctx.ARRAY_BUFFER, ctx.sphere.texCoordObject); + ctx.vertexAttribPointer(1, 2, ctx.FLOAT, false, 0, 0); + + ctx.bindBuffer(ctx.ELEMENT_ARRAY_BUFFER, ctx.sphere.indexObject); + + // generate the model-view matrix + var mvMatrix = new CanvasMatrix4(); + mvMatrix.scale(scale, scale, scale); + mvMatrix.rotate(angle, 0,1,0); + mvMatrix.rotate(30, 1,0,0); + mvMatrix.translate(x,y,z); + ctx.uniformMatrix4fv(ctx.getUniformLocation(ctx.program, "u_modelViewMatrix"), false, mvMatrix.getAsCanvasFloatArray()); + + // construct the normal matrix from the model-view matrix + var normalMatrix = new CanvasMatrix4(mvMatrix); + normalMatrix.invert(); + normalMatrix.transpose(); + ctx.uniformMatrix4fv(ctx.getUniformLocation(ctx.program, "u_normalMatrix"), false, normalMatrix.getAsCanvasFloatArray()); + + // construct the model-view * projection matrix + var mvpMatrix = new CanvasMatrix4(mvMatrix); + mvpMatrix.multRight(ctx.perspectiveMatrix); + ctx.uniformMatrix4fv(ctx.getUniformLocation(ctx.program, "u_modelViewProjMatrix"), false, mvpMatrix.getAsCanvasFloatArray()); + + ctx.bindTexture(ctx.TEXTURE_2D, texture); + ctx.drawElements(ctx.TRIANGLES, ctx.sphere.numIndices, ctx.UNSIGNED_SHORT, 0); + } + + function drawPicture(ctx) + { + reshape(ctx); + ctx.clear(ctx.COLOR_BUFFER_BIT | ctx.DEPTH_BUFFER_BIT); + + var startX = -layoutWidth/2; + var startY = -layoutHeight/2; + var startZ = 0; + var incX = layoutWidth / (numRowCols-1); + var incY = layoutHeight / (numRowCols-1); + var incZ = -5; + + for (i = 0; i < numLayers; ++i) { + for (j = 0; j < numRowCols; ++j) { + for (k = 0; k < numRowCols; ++k) { + var index = i * numLayers * numRowCols + j * numRowCols + k; + + drawOne(ctx, currentAngles[index], + startX + incX * k, + startY + incY * j, + startZ + incZ * i, + showEarth[index] ? 1 : 0.6, showEarth[index] ? earthTexture : marsTexture); + + currentAngles[index] += incAngles[i]; + if (currentAngles[index] > 360) + currentAngles[index] -= 360; + } + } + } + + ctx.bindTexture(ctx.TEXTURE_2D, 0); + ctx.flush(); + + framerate.snapshot(); + } + + function start() + { + var ctx = init(); + currentAngles = [ ]; + incAngles = [ ]; + showEarth = [ ]; + + for (var i = 0; i < numRowCols * numRowCols * numLayers; ++i) { + currentAngles[i] = 0; + incAngles[i] = Math.random() * (maxIncAngle - minIncAngle) + minIncAngle; + showEarth[i] = Math.random() > 0.5; + } + + framerate = new Framerate("framerate"); + + var f = function() { drawPicture(ctx) }; + setInterval(f, 10); + } + </script> + <style type="text/css"> + canvas { + border: 2px solid black; + width:90%; + height:90%; + } + </style> + </head> + <body onload="start()"> + <canvas id="example"> + There is supposed to be an example drawing here, but it's not important. + </canvas> + <div id="framerate"></div> + </body> +</html> diff --git a/WebCore/manual-tests/webgl/SpinningBox.html b/WebCore/manual-tests/webgl/SpinningBox.html new file mode 100644 index 0000000..203d7bd --- /dev/null +++ b/WebCore/manual-tests/webgl/SpinningBox.html @@ -0,0 +1,149 @@ +<!DOCTYPE html> +<html> + <head> + <title>Canvas3d example</title> + <script src="resources/CanvasMatrix.js"> </script> + <script src="resources/utils3d.js"> </script> + <script id="vshader" type="x-shader/x-vertex"> + uniform mat4 pMatrix; + uniform mat4 mvMatrix; + uniform vec3 lightDir; + + attribute vec3 vNormal; + attribute vec4 vColor; + attribute vec4 vPosition; + + varying float v_Dot; + + void main() + { + gl_FrontColor = vColor; + vec4 transNormal = mvMatrix * vec4(vNormal,1); + v_Dot = max(dot(transNormal.xyz, lightDir), 0.0); + gl_Position = pMatrix * mvMatrix * vPosition; + } + </script> + + <script id="fshader" type="x-shader/x-fragment"> + varying float v_Dot; + + void main() + { + gl_FragColor = vec4(gl_Color.xyz * v_Dot, gl_Color.a); + } + </script> + + <script> + function init() + { + var gl = initWebGL("example", "vshader", "fshader", + [ "vNormal", "vColor", "vPosition"], + [ 0, 0, 0, 1 ], 10000); + + gl.uniform3f(gl.getUniformLocation(gl.program, "lightDir"), 0, 0, 1); + + gl.box = makeBox(gl); + + // color array + var colors = new CanvasUnsignedByteArray( + [ 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, // v0-v1-v2-v3 front + 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, // v0-v3-v4-v5 right + 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, // v0-v5-v6-v1 top + 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, // v1-v6-v7-v2 left + 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, // v7-v4-v3-v2 bottom + 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1 ] // v4-v7-v6-v5 back + ); + + gl.box.colorObject = gl.createBuffer(); + gl.bindBuffer(gl.ARRAY_BUFFER, gl.box.colorObject); + gl.bufferData(gl.ARRAY_BUFFER, colors, gl.STATIC_DRAW); + + return gl; + } + + width = -1; + height = -1; + + function reshape(gl) + { + var canvas = document.getElementById('example'); + if (canvas.clientWidth == width && canvas.clientHeight == height) + return; + + width = canvas.clientWidth; + height = canvas.clientHeight; + + gl.viewport(0, 0, width, height); + var pMatrix = new CanvasMatrix4(); + pMatrix.lookat(0,0,10, 0, 0, 0, 0, 1, 0); + pMatrix.perspective(30, width/height, 1, 10000); + gl.uniformMatrix4fv(gl.getUniformLocation(gl.program, "pMatrix"), false, pMatrix.getAsCanvasFloatArray()); + } + + function drawPicture(gl) + { + reshape(gl); + gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT); + + var mvMatrix = new CanvasMatrix4(); + mvMatrix.rotate(currentAngle, 0,1,0); + mvMatrix.rotate(20, 1,0,0); + gl.uniformMatrix4fv(gl.getUniformLocation(gl.program, "mvMatrix"), false, mvMatrix.getAsCanvasFloatArray()); + + gl.enableVertexAttribArray(0); + gl.enableVertexAttribArray(1); + gl.enableVertexAttribArray(2); + + gl.bindBuffer(gl.ARRAY_BUFFER, gl.box.vertexObject); + gl.vertexAttribPointer(2, 3, gl.FLOAT, false, 0, 0); + + gl.bindBuffer(gl.ARRAY_BUFFER, gl.box.normalObject); + gl.vertexAttribPointer(0, 3, gl.FLOAT, false, 0, 0); + + gl.bindBuffer(gl.ARRAY_BUFFER, gl.box.colorObject); + gl.vertexAttribPointer(1, 4, gl.UNSIGNED_BYTE, false, 0, 0); + + gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, gl.box.indexObject); + gl.drawElements(gl.TRIANGLES, gl.box.numIndices, gl.UNSIGNED_BYTE, 0); + + gl.flush(); + + framerate.snapshot(); + + currentAngle += incAngle; + if (currentAngle > 360) + currentAngle -= 360; + } + + function start() + { + var gl = init(); + currentAngle = 0; + incAngle = 0.5; + framerate = new Framerate("framerate"); + setInterval(function() { drawPicture(gl) }, 10); + } + </script> + <style type="text/css"> + canvas { + border: 2px solid black; + width:90%; + height:90%; + } + .text { + position:absolute; + top:100px; + left:20px; + font-size:2em; + color: blue; + } + </style> + </head> + <body onload="start()"> + <canvas id="example"> + There is supposed to be an example drawing here, but it's not important. + </canvas> + <div class="text">This is some text under the canvas</div> + <div id="framerate"></div> + </body> +</html> diff --git a/WebCore/manual-tests/webgl/TeapotPerPixel.html b/WebCore/manual-tests/webgl/TeapotPerPixel.html new file mode 100644 index 0000000..6274c8b --- /dev/null +++ b/WebCore/manual-tests/webgl/TeapotPerPixel.html @@ -0,0 +1,332 @@ +<!DOCTYPE html> +<html> + <head> + <title>Canvas3d example</title> + <script src="resources/CanvasMatrix.js"> </script> + <script src="resources/utils3d.js"> </script> + <script id="vshader" type="x-shader/x-vertex"> + /* + Copyright (c) 2008 Seneca College + Licenced under the MIT License (http://www.c3dl.org/index.php/mit-license/) + */ + + // We need to create our own light structure since we can't access + // the light() function in the 2.0 context. + struct Light + { + vec4 ambient; + vec4 diffuse; + vec4 specular; + vec4 position; + + vec3 halfVector; + }; + + struct Material + { + vec4 emission; + vec4 ambient; + vec4 diffuse; + vec4 specular; + float shininess; + }; + + // + // vertex attributes + // + attribute vec4 a_vertex; + attribute vec3 a_normal; + attribute vec4 a_texCoord; + + // for every model we multiply the projection, view and model matrices + // once to prevent having to do it for every vertex, however we still need + // the view matrix to calculate lighting. + uniform mat4 u_modelViewMatrix; + + // we can calculate this once per model to speed up processing done on the js side. + uniform mat4 u_modelViewProjMatrix; + + // matrix to transform the vertex normals + uniform mat4 u_normalMatrix; + + // custom light structures need to be used since we don't have access to + // light states. + uniform Light u_light; + + // material + uniform vec4 u_globalAmbientColor; + uniform Material u_frontMaterial; + uniform Material u_backMaterial; + + // passed to fragment shader + varying vec4 v_diffuse, v_ambient; + varying vec3 v_normal, v_lightDir; + varying vec2 v_texCoord; + + /* + Given a reference to the ambient and diffuse lighting variables, + this function will calculate how much each component contributes to the scene. + + Light light - the light in view space + vec3 normal - + vec4 ambient - + vec4 diffuse - + */ + vec3 directionalLight(inout vec4 ambient, inout vec4 diffuse) + { + ambient += u_light.ambient; + diffuse += u_light.diffuse; + return normalize(vec3(u_light.position)); + } + + void main() + { + v_normal = normalize(u_normalMatrix * vec4(a_normal, 1)).xyz; + + vec4 ambient = vec4(0.0, 0.0, 0.0, 1.0); + vec4 diffuse = vec4(0.0, 0.0, 0.0, 1.0); + vec4 specular = vec4(0.0, 0.0, 0.0, 1.0); + + // place the current vertex into view space + // ecPos = eye coordinate position. + vec4 ecPos4 = u_modelViewMatrix * a_vertex; + + // the current vertex in eye coordinate space + vec3 ecPos = ecPos4.xyz/ecPos4.w; + v_lightDir = directionalLight(ambient, diffuse); + + v_ambient = u_frontMaterial.ambient * ambient; + v_ambient += u_globalAmbientColor * u_frontMaterial.ambient; + v_diffuse = u_frontMaterial.diffuse * diffuse; + + gl_Position = u_modelViewProjMatrix * a_vertex; + v_texCoord = a_texCoord.st; + } + </script> + + <script id="fshader" type="x-shader/x-fragment"> + struct Light + { + vec4 ambient; + vec4 diffuse; + vec4 specular; + vec4 position; + + vec3 halfVector; + }; + + struct Material + { + vec4 emission; + vec4 ambient; + vec4 diffuse; + vec4 specular; + float shininess; + }; + + uniform sampler2D u_sampler2d; + uniform Light u_light; + uniform Material u_frontMaterial; + uniform Material u_backMaterial; + + varying vec4 v_diffuse, v_ambient; + varying vec3 v_normal, v_lightDir; + varying vec2 v_texCoord; + + void main() + { + vec4 color = v_diffuse; + + vec3 n = normalize(v_normal); + + Light light = u_light; + vec3 lightDir = v_lightDir; + float nDotL = max(dot(n, lightDir), 0.0); + if (nDotL > 0.0) { + color = vec4(color.rgb * nDotL, color.a); + float nDotHV = max(dot(n, light.halfVector), 0.0); + vec4 specular = u_frontMaterial.specular * light.specular; + color += vec4(specular.rgb * pow(nDotHV, u_frontMaterial.shininess), specular.a); + } + + gl_FragColor = color + v_ambient; + } + </script> + + <script> + console.log("Hello"); + function setDirectionalLight(ctx, program, eyeVector, direction, ambient, diffuse, specular) + { + var lightString = "u_light."; + + ctx.uniform4f(ctx.getUniformLocation(program, lightString+"ambient"), + ambient[0], ambient[1], ambient[2], ambient[3]); + ctx.uniform4f(ctx.getUniformLocation(program, lightString+"diffuse"), + diffuse[0], diffuse[1], diffuse[2], diffuse[3]); + ctx.uniform4f(ctx.getUniformLocation(program, lightString+"specular"), + specular[0], specular[1], specular[2], specular[3]); + ctx.uniform4f(ctx.getUniformLocation(program, lightString+"position"), + direction[0], direction[1], direction[2], direction[3]); + + // compute the half vector + var halfVector = [ eyeVector[0] + direction[0], eyeVector[1] + direction[1], eyeVector[2] + direction[2] ]; + var length = Math.sqrt(halfVector[0] * halfVector[0] + + halfVector[1] * halfVector[1] + + halfVector[2] * halfVector[2]); + if (length == 0) + halfVector = [ 0, 0, 1 ]; + else { + halfVector[0] /= length; + halfVector[1] /= length; + halfVector[2] /= length; + } + + ctx.uniform3f(ctx.getUniformLocation(program, lightString+"halfVector"), + halfVector[0], halfVector[1], halfVector[2]); + } + + function setMaterial(ctx, program, emission, ambient, diffuse, specular, shininess) + { + var matString = "u_frontMaterial."; + ctx.uniform4f(ctx.getUniformLocation(program, matString+"emission"), + emission[0], emission[1], emission[2], emission[3]); + ctx.uniform4f(ctx.getUniformLocation(program, matString+"ambient"), + ambient[0], ambient[1], ambient[2], ambient[3]); + ctx.uniform4f(ctx.getUniformLocation(program, matString+"diffuse"), + diffuse[0], diffuse[1], diffuse[2], diffuse[3]); + ctx.uniform4f(ctx.getUniformLocation(program, matString+"specular"), + specular[0], specular[1], specular[2], specular[3]); + ctx.uniform1f(ctx.getUniformLocation(program, matString+"shininess"), shininess); + } + + function init() + { + var gl = initWebGL("example", "vshader", "fshader", + [ "a_normal", "a_texCoord", "a_vertex"], + [ 0, 0, 0, 1 ], 10000); + + gl.uniform1i(gl.getUniformLocation(gl.program, "u_sampler2d"), 0); + gl.uniform4f(gl.getUniformLocation(gl.program, "u_globalAmbientColor"), 0.2, 0.2, 0.2, 1); + + setDirectionalLight(gl, gl.program, + [ 0, 0, 1 ], // eyeVector + [0, 0, 1, 1], // position + [0.1, 0.1, 0.1, 1], // ambient + [1, 1, 1, 1], // diffuse + [1, 1, 1, 1]); // specular + + setMaterial(gl, gl.program, + [ 0, 0, 0, 0 ], // emission + [ 0.1, 0.1, 0.1, 1 ], // ambient + [ 0.8, 0.2, 0, 1 ], // diffuse + [ 0, 0, 1, 1 ], // specular + 32); // shininess + + obj = loadObj(gl, "resources/teapot.obj"); + + mvMatrix = new CanvasMatrix4(); + normalMatrix = new CanvasMatrix4(); + + return gl; + } + + width = -1; + height = -1; + loaded = false; + + function reshape(ctx) + { + var canvas = document.getElementById('example'); + if (canvas.clientWidth == width && canvas.clientHeight == height) + return; + + width = canvas.clientWidth; + height = canvas.clientHeight; + + ctx.viewport(0, 0, width, height); + + ctx.perspectiveMatrix = new CanvasMatrix4(); + ctx.perspectiveMatrix.lookat(0,0,50, 0, 0, 0, 0, 1, 0); + ctx.perspectiveMatrix.perspective(30, width/height, 1, 10000); + } + + function drawPicture(ctx) + { + var startRenderTime = new Date().getTime(); + + reshape(ctx); + ctx.clear(ctx.COLOR_BUFFER_BIT | ctx.DEPTH_BUFFER_BIT); + + if (!loaded && obj.loaded) { + loaded = true; + + ctx.enableVertexAttribArray(0); + ctx.enableVertexAttribArray(1); + ctx.enableVertexAttribArray(2); + + ctx.bindBuffer(ctx.ARRAY_BUFFER, obj.vertexObject); + ctx.vertexAttribPointer(2, 3, ctx.FLOAT, false, 0, 0); + + ctx.bindBuffer(ctx.ARRAY_BUFFER, obj.normalObject); + ctx.vertexAttribPointer(0, 3, ctx.FLOAT, false, 0, 0); + + ctx.bindBuffer(ctx.ARRAY_BUFFER, obj.texCoordObject); + ctx.vertexAttribPointer(1, 2, ctx.FLOAT, false, 0, 0); + + ctx.bindBuffer(ctx.ELEMENT_ARRAY_BUFFER, obj.indexObject); + } + + if (!loaded) + return; + + // generate the model-view matrix + mvMatrix.makeIdentity(); + mvMatrix.rotate(currentAngle, 0, 1, 0); + mvMatrix.rotate(10, 1,0,0); + ctx.uniformMatrix4fv(ctx.getUniformLocation(ctx.program, "u_modelViewMatrix"), false, mvMatrix.getAsCanvasFloatArray()); + + // construct the normal matrix from the model-view matrix + normalMatrix.load(mvMatrix); + normalMatrix.invert(); + normalMatrix.transpose(); + ctx.uniformMatrix4fv(ctx.getUniformLocation(ctx.program, "u_normalMatrix"), false, normalMatrix.getAsCanvasFloatArray()); + + mvMatrix.multRight(ctx.perspectiveMatrix); + ctx.uniformMatrix4fv(ctx.getUniformLocation(ctx.program, "u_modelViewProjMatrix"), false, mvMatrix.getAsCanvasFloatArray()); + + ctx.drawElements(ctx.TRIANGLES, obj.numIndices, ctx.UNSIGNED_SHORT, 0); + + ctx.flush(); + + framerate.snapshot(); + + currentAngle += incAngle; + if (currentAngle > 360) + currentAngle -= 360; + } + + function start() + { + var ctx = init(); + currentAngle = 0; + incAngle = 0.2; + framerate = new Framerate("framerate"); + var f = function() { drawPicture(ctx) }; + setInterval(f, 10); + } + </script> + <style type="text/css"> + canvas { + border: 2px solid black; + width:90%; + height:90%; + } + </style> + </head> + <body onload="start()"> + <canvas id="example"> + There is supposed to be an example drawing here, but it's not important. + </canvas> + <div id="framerate"></div> + </body> +</html> diff --git a/WebCore/manual-tests/webgl/TeapotPerVertex.html b/WebCore/manual-tests/webgl/TeapotPerVertex.html new file mode 100644 index 0000000..d2544a3 --- /dev/null +++ b/WebCore/manual-tests/webgl/TeapotPerVertex.html @@ -0,0 +1,305 @@ +<!DOCTYPE html> +<html> + <head> + <title>Canvas3d example</title> + <script src="resources/CanvasMatrix.js"> </script> + <script src="resources/utils3d.js"> </script> + <script id="vshader" type="x-shader/x-vertex"> + /* + Copyright (c) 2008 Seneca College + Licenced under the MIT License (http://www.c3dl.org/index.php/mit-license/) + */ + + // We need to create our own light structure since we can't access + // the light() function in the 2.0 context. + struct Light + { + vec4 ambient; + vec4 diffuse; + vec4 specular; + vec4 position; + + vec3 halfVector; + }; + + struct Material + { + vec4 emission; + vec4 ambient; + vec4 diffuse; + vec4 specular; + float shininess; + }; + + // + // vertex attributes + // + attribute vec3 a_normal; + attribute vec4 a_texCoord; + attribute vec4 a_vertex; + + // for every model we multiply the projection, view and model matrices + // once to prevent having to do it for every vertex, however we still need + // the view matrix to calculate lighting. + uniform mat4 u_modelViewMatrix; + + // we can calculate this once per model to speed up processing done on the js side. + uniform mat4 u_modelViewProjMatrix; + + // matrix to transform the vertex normals + uniform mat4 u_normalMatrix; + + // custom light structures need to be used since we don't have access to + // light states. + uniform Light u_light; + + // material + uniform vec4 u_globalAmbientColor; + uniform Material u_frontMaterial; + uniform Material u_backMaterial; + + // passed to fragment shader + varying vec4 v_diffuse, v_specular; + varying vec2 v_texCoord; + + /* + Given a reference to the ambient and diffuse lighting variables, + this function will calculate how much each component contributes to the scene. + + Light light - the light in view space + vec3 normal - + vec4 ambient - + vec4 diffuse - + */ + void directionalLight(in vec3 normal, inout vec4 ambient, inout vec4 diffuse, inout vec4 specular) + { + vec3 lightDir = normalize(vec3(u_light.position)); + ambient += u_light.ambient; + + float nDotL = max(dot(normal, lightDir), 0.0); + if (nDotL > 0.0) { + diffuse += u_light.diffuse * nDotL; + float nDotHV = max(dot(normal, u_light.halfVector), 0.0); + nDotHV += 0.3; + vec4 specularColor = u_frontMaterial.specular * u_light.specular; + specular += vec4(specularColor.rgb * pow(nDotHV, u_frontMaterial.shininess), specularColor.a); + } + } + + void main() + { + vec3 normal = normalize(u_normalMatrix * vec4(a_normal, 1)).xyz; + + vec4 ambient = vec4(0.0, 0.0, 0.0, 1.0); + vec4 diffuse = vec4(0.0, 0.0, 0.0, 1.0); + vec4 specular = vec4(0.0, 0.0, 0.0, 1.0); + + // place the current vertex into view space + // ecPos = eye coordinate position. + vec4 ecPos4 = u_modelViewMatrix * a_vertex; + + // the current vertex in eye coordinate space + vec3 ecPos = ecPos4.xyz/ecPos4.w; + directionalLight(normal, ambient, diffuse, specular); + + ambient = u_frontMaterial.ambient * ambient; + ambient += u_globalAmbientColor * u_frontMaterial.ambient; + diffuse = u_frontMaterial.diffuse * diffuse; + + v_diffuse = diffuse; + v_specular = specular + ambient; + gl_Position = u_modelViewProjMatrix * a_vertex; + v_texCoord = a_texCoord.st; + } + </script> + + <script id="fshader" type="x-shader/x-fragment"> + uniform sampler2D u_sampler2d; + + varying vec4 v_diffuse, v_specular; + varying vec2 v_texCoord; + + void main() + { + vec4 color = v_diffuse; + + gl_FragColor = color + v_specular; + } + </script> + + <script> + function setDirectionalLight(ctx, program, eyeVector, direction, ambient, diffuse, specular) + { + var lightString = "u_light."; + + ctx.uniform4f(ctx.getUniformLocation(program, lightString+"ambient"), + ambient[0], ambient[1], ambient[2], ambient[3]); + ctx.uniform4f(ctx.getUniformLocation(program, lightString+"diffuse"), + diffuse[0], diffuse[1], diffuse[2], diffuse[3]); + ctx.uniform4f(ctx.getUniformLocation(program, lightString+"specular"), + specular[0], specular[1], specular[2], specular[3]); + ctx.uniform4f(ctx.getUniformLocation(program, lightString+"position"), + direction[0], direction[1], direction[2], direction[3]); + + // compute the half vector + var halfVector = [ eyeVector[0] + direction[0], eyeVector[1] + direction[1], eyeVector[2] + direction[2] ]; + var length = Math.sqrt(halfVector[0] * halfVector[0] + + halfVector[1] * halfVector[1] + + halfVector[2] * halfVector[2]); + if (length == 0) + halfVector = [ 0, 0, 1 ]; + else { + halfVector[0] /= length; + halfVector[1] /= length; + halfVector[2] /= length; + } + + ctx.uniform3f(ctx.getUniformLocation(program, lightString+"halfVector"), + halfVector[0], halfVector[1], halfVector[2]); + } + + function setMaterial(ctx, program, emission, ambient, diffuse, specular, shininess) + { + var matString = "u_frontMaterial."; + ctx.uniform4f(ctx.getUniformLocation(program, matString+"emission"), + emission[0], emission[1], emission[2], emission[3]); + ctx.uniform4f(ctx.getUniformLocation(program, matString+"ambient"), + ambient[0], ambient[1], ambient[2], ambient[3]); + ctx.uniform4f(ctx.getUniformLocation(program, matString+"diffuse"), + diffuse[0], diffuse[1], diffuse[2], diffuse[3]); + ctx.uniform4f(ctx.getUniformLocation(program, matString+"specular"), + specular[0], specular[1], specular[2], specular[3]); + ctx.uniform1f(ctx.getUniformLocation(program, matString+"shininess"), shininess); + } + + function init() + { + var gl = initWebGL("example", "vshader", "fshader", + [ "a_normal", "a_texCoord", "a_vertex"], + [ 0, 0, 0, 1 ], 10000); + + gl.uniform1i(gl.getUniformLocation(gl.program, "u_sampler2d"), 0); + gl.uniform4f(gl.getUniformLocation(gl.program, "u_globalAmbientColor"), 0.2, 0.2, 0.2, 1); + + setDirectionalLight(gl, gl.program, + [ 0, 0, 1 ], // eyeVector + [0, 0, 1, 1], // position + [0.1, 0.1, 0.1, 1], // ambient + [1, 1, 1, 1], // diffuse + [1, 1, 1, 1]); // specular + + setMaterial(gl, gl.program, + [ 0, 0, 0, 0 ], // emission + [ 0.1, 0.1, 0.1, 1 ], // ambient + [ 0.8, 0.2, 0, 1 ], // diffuse + [ 0, 0, 1, 1 ], // specular + 32); // shininess + + obj = loadObj(gl, "resources/teapot.obj"); + + mvMatrix = new CanvasMatrix4(); + normalMatrix = new CanvasMatrix4(); + + return gl; + } + + width = -1; + height = -1; + loaded = false; + + function reshape(ctx) + { + var canvas = document.getElementById('example'); + if (canvas.clientWidth == width && canvas.clientHeight == height) + return; + + width = canvas.clientWidth; + height = canvas.clientHeight; + + ctx.viewport(0, 0, width, height); + + ctx.perspectiveMatrix = new CanvasMatrix4(); + ctx.perspectiveMatrix.lookat(0,0,50, 0, 0, 0, 0, 1, 0); + ctx.perspectiveMatrix.perspective(30, width/height, 1, 10000); + } + + function drawPicture(ctx) + { + var startRenderTime = new Date().getTime(); + + reshape(ctx); + ctx.clear(ctx.COLOR_BUFFER_BIT | ctx.DEPTH_BUFFER_BIT); + + if (!loaded && obj.loaded) { + loaded = true; + + ctx.enableVertexAttribArray(0); + ctx.enableVertexAttribArray(1); + ctx.enableVertexAttribArray(2); + + ctx.bindBuffer(ctx.ARRAY_BUFFER, obj.normalObject); + ctx.vertexAttribPointer(0, 3, ctx.FLOAT, false, 0, 0); + + ctx.bindBuffer(ctx.ARRAY_BUFFER, obj.texCoordObject); + ctx.vertexAttribPointer(1, 2, ctx.FLOAT, false, 0, 0); + + ctx.bindBuffer(ctx.ARRAY_BUFFER, obj.vertexObject); + ctx.vertexAttribPointer(2, 3, ctx.FLOAT, false, 0, 0); + + ctx.bindBuffer(ctx.ELEMENT_ARRAY_BUFFER, obj.indexObject); + } + + if (!loaded) + return; + + // generate the model-view matrix + mvMatrix.makeIdentity(); + mvMatrix.rotate(currentAngle, 0, 1, 0); + mvMatrix.rotate(10, 1,0,0); + ctx.uniformMatrix4fv(ctx.getUniformLocation(ctx.program, "u_modelViewMatrix"), false, mvMatrix.getAsCanvasFloatArray()); + + // construct the normal matrix from the model-view matrix + normalMatrix.load(mvMatrix); + normalMatrix.invert(); + normalMatrix.transpose(); + ctx.uniformMatrix4fv(ctx.getUniformLocation(ctx.program, "u_normalMatrix"), false, normalMatrix.getAsCanvasFloatArray()); + + mvMatrix.multRight(ctx.perspectiveMatrix); + ctx.uniformMatrix4fv(ctx.getUniformLocation(ctx.program, "u_modelViewProjMatrix"), false, mvMatrix.getAsCanvasFloatArray()); + + ctx.drawElements(ctx.TRIANGLES, obj.numIndices, ctx.UNSIGNED_SHORT, 0); + + ctx.flush(); + + framerate.snapshot(); + + currentAngle += incAngle; + if (currentAngle > 360) + currentAngle -= 360; + } + + function start() + { + var ctx = init(); + currentAngle = 0; + incAngle = 0.2; + framerate = new Framerate("framerate"); + var f = function() { drawPicture(ctx) }; + setInterval(f, 10); + } + </script> + <style type="text/css"> + canvas { + border: 2px solid black; + width:90%; + height:90%; + } + </style> + </head> + <body onload="start()"> + <canvas id="example"> + There is supposed to be an example drawing here, but it's not important. + </canvas> + <div id="framerate"></div> + </body> +</html> diff --git a/WebCore/manual-tests/webgl/resources/CanvasMatrix.js b/WebCore/manual-tests/webgl/resources/CanvasMatrix.js new file mode 100644 index 0000000..f35727f --- /dev/null +++ b/WebCore/manual-tests/webgl/resources/CanvasMatrix.js @@ -0,0 +1,698 @@ +/* + CanvasMatrix4 class + + This class implements a 4x4 matrix. It has functions which + duplicate the functionality of the OpenGL matrix stack and + glut functions. + + IDL: + + [ + Constructor(in CanvasMatrix4 matrix), // copy passed matrix into new CanvasMatrix4 + Constructor(in sequence<float> array) // create new CanvasMatrix4 with 16 floats (row major) + Constructor() // create new CanvasMatrix4 with identity matrix + ] + interface CanvasMatrix4 { + attribute float m11; + attribute float m12; + attribute float m13; + attribute float m14; + attribute float m21; + attribute float m22; + attribute float m23; + attribute float m24; + attribute float m31; + attribute float m32; + attribute float m33; + attribute float m34; + attribute float m41; + attribute float m42; + attribute float m43; + attribute float m44; + + void load(in CanvasMatrix4 matrix); // copy the values from the passed matrix + void load(in sequence<float> array); // copy 16 floats into the matrix + sequence<float> getAsArray(); // return the matrix as an array of 16 floats + CanvasFloatArray getAsCanvasFloatArray(); // return the matrix as a CanvasFloatArray with 16 values + void makeIdentity(); // replace the matrix with identity + void transpose(); // replace the matrix with its transpose + void invert(); // replace the matrix with its inverse + + void translate(in float x, in float y, in float z); // multiply the matrix by passed translation values on the right + void scale(in float x, in float y, in float z); // multiply the matrix by passed scale values on the right + void rotate(in float angle, // multiply the matrix by passed rotation values on the right + in float x, in float y, in float z); // (angle is in degrees) + void multRight(in CanvasMatrix matrix); // multiply the matrix by the passed matrix on the right + void multLeft(in CanvasMatrix matrix); // multiply the matrix by the passed matrix on the left + void ortho(in float left, in float right, // multiply the matrix by the passed ortho values on the right + in float bottom, in float top, + in float near, in float far); + void frustum(in float left, in float right, // multiply the matrix by the passed frustum values on the right + in float bottom, in float top, + in float near, in float far); + void perspective(in float fovy, in float aspect, // multiply the matrix by the passed perspective values on the right + in float zNear, in float zFar); + void lookat(in float eyex, in float eyey, in float eyez, // multiply the matrix by the passed lookat + in float ctrx, in float ctry, in float ctrz, // values on the right + in float upx, in float upy, in float upz); + } +*/ + +CanvasMatrix4 = function(m) +{ + if (typeof m == 'object') { + if ("length" in m && m.length >= 16) { + this.load(m[0], m[1], m[2], m[3], m[4], m[5], m[6], m[7], m[8], m[9], m[10], m[11], m[12], m[13], m[14], m[15]); + return; + } + else if (m instanceof CanvasMatrix4) { + this.load(m); + return; + } + } + this.makeIdentity(); +} + +CanvasMatrix4.prototype.load = function() +{ + if (arguments.length == 1 && typeof arguments[0] == 'object') { + var matrix = arguments[0]; + + if ("length" in matrix && matrix.length == 16) { + this.m11 = matrix[0]; + this.m12 = matrix[1]; + this.m13 = matrix[2]; + this.m14 = matrix[3]; + + this.m21 = matrix[4]; + this.m22 = matrix[5]; + this.m23 = matrix[6]; + this.m24 = matrix[7]; + + this.m31 = matrix[8]; + this.m32 = matrix[9]; + this.m33 = matrix[10]; + this.m34 = matrix[11]; + + this.m41 = matrix[12]; + this.m42 = matrix[13]; + this.m43 = matrix[14]; + this.m44 = matrix[15]; + return; + } + + if (arguments[0] instanceof CanvasMatrix4) { + + this.m11 = matrix.m11; + this.m12 = matrix.m12; + this.m13 = matrix.m13; + this.m14 = matrix.m14; + + this.m21 = matrix.m21; + this.m22 = matrix.m22; + this.m23 = matrix.m23; + this.m24 = matrix.m24; + + this.m31 = matrix.m31; + this.m32 = matrix.m32; + this.m33 = matrix.m33; + this.m34 = matrix.m34; + + this.m41 = matrix.m41; + this.m42 = matrix.m42; + this.m43 = matrix.m43; + this.m44 = matrix.m44; + return; + } + } + + this.makeIdentity(); +} + +CanvasMatrix4.prototype.getAsArray = function() +{ + return [ + this.m11, this.m12, this.m13, this.m14, + this.m21, this.m22, this.m23, this.m24, + this.m31, this.m32, this.m33, this.m34, + this.m41, this.m42, this.m43, this.m44 + ]; +} + +CanvasMatrix4.prototype.getAsCanvasFloatArray = function() +{ + return new CanvasFloatArray(this.getAsArray()); +} + +CanvasMatrix4.prototype.makeIdentity = function() +{ + this.m11 = 1; + this.m12 = 0; + this.m13 = 0; + this.m14 = 0; + + this.m21 = 0; + this.m22 = 1; + this.m23 = 0; + this.m24 = 0; + + this.m31 = 0; + this.m32 = 0; + this.m33 = 1; + this.m34 = 0; + + this.m41 = 0; + this.m42 = 0; + this.m43 = 0; + this.m44 = 1; +} + +CanvasMatrix4.prototype.transpose = function() +{ + var tmp = this.m12; + this.m12 = this.m21; + this.m21 = tmp; + + tmp = this.m13; + this.m13 = this.m31; + this.m31 = tmp; + + tmp = this.m14; + this.m14 = this.m41; + this.m41 = tmp; + + tmp = this.m23; + this.m23 = this.m32; + this.m32 = tmp; + + tmp = this.m24; + this.m24 = this.m42; + this.m42 = tmp; + + tmp = this.m34; + this.m34 = this.m43; + this.m43 = tmp; +} + +CanvasMatrix4.prototype.invert = function() +{ + // Calculate the 4x4 determinant + // If the determinant is zero, + // then the inverse matrix is not unique. + var det = this._determinant4x4(); + + if (Math.abs(det) < 1e-8) + return null; + + this._makeAdjoint(); + + // Scale the adjoint matrix to get the inverse + this.m11 /= det; + this.m12 /= det; + this.m13 /= det; + this.m14 /= det; + + this.m21 /= det; + this.m22 /= det; + this.m23 /= det; + this.m24 /= det; + + this.m31 /= det; + this.m32 /= det; + this.m33 /= det; + this.m34 /= det; + + this.m41 /= det; + this.m42 /= det; + this.m43 /= det; + this.m44 /= det; +} + +CanvasMatrix4.prototype.translate = function(x,y,z) +{ + if (x == undefined) + x = 0; + if (y == undefined) + y = 0; + if (z == undefined) + z = 0; + + var matrix = new CanvasMatrix4(); + matrix.m41 = x; + matrix.m42 = y; + matrix.m43 = z; + + this.multRight(matrix); +} + +CanvasMatrix4.prototype.scale = function(x,y,z) +{ + if (x == undefined) + x = 1; + if (z == undefined) { + if (y == undefined) { + y = x; + z = x; + } + else + z = 1; + } + else if (y == undefined) + y = x; + + var matrix = new CanvasMatrix4(); + matrix.m11 = x; + matrix.m22 = y; + matrix.m33 = z; + + this.multRight(matrix); +} + +CanvasMatrix4.prototype.rotate = function(angle,x,y,z) +{ + // angles are in degrees. Switch to radians + angle = angle / 180 * Math.PI; + + angle /= 2; + var sinA = Math.sin(angle); + var cosA = Math.cos(angle); + var sinA2 = sinA * sinA; + + // normalize + var length = Math.sqrt(x * x + y * y + z * z); + if (length == 0) { + // bad vector, just use something reasonable + x = 0; + y = 0; + z = 1; + } else if (length != 1) { + x /= length; + y /= length; + z /= length; + } + + var mat = new CanvasMatrix4(); + + // optimize case where axis is along major axis + if (x == 1 && y == 0 && z == 0) { + mat.m11 = 1; + mat.m12 = 0; + mat.m13 = 0; + mat.m21 = 0; + mat.m22 = 1 - 2 * sinA2; + mat.m23 = 2 * sinA * cosA; + mat.m31 = 0; + mat.m32 = -2 * sinA * cosA; + mat.m33 = 1 - 2 * sinA2; + mat.m14 = mat.m24 = mat.m34 = 0; + mat.m41 = mat.m42 = mat.m43 = 0; + mat.m44 = 1; + } else if (x == 0 && y == 1 && z == 0) { + mat.m11 = 1 - 2 * sinA2; + mat.m12 = 0; + mat.m13 = -2 * sinA * cosA; + mat.m21 = 0; + mat.m22 = 1; + mat.m23 = 0; + mat.m31 = 2 * sinA * cosA; + mat.m32 = 0; + mat.m33 = 1 - 2 * sinA2; + mat.m14 = mat.m24 = mat.m34 = 0; + mat.m41 = mat.m42 = mat.m43 = 0; + mat.m44 = 1; + } else if (x == 0 && y == 0 && z == 1) { + mat.m11 = 1 - 2 * sinA2; + mat.m12 = 2 * sinA * cosA; + mat.m13 = 0; + mat.m21 = -2 * sinA * cosA; + mat.m22 = 1 - 2 * sinA2; + mat.m23 = 0; + mat.m31 = 0; + mat.m32 = 0; + mat.m33 = 1; + mat.m14 = mat.m24 = mat.m34 = 0; + mat.m41 = mat.m42 = mat.m43 = 0; + mat.m44 = 1; + } else { + var x2 = x*x; + var y2 = y*y; + var z2 = z*z; + + mat.m11 = 1 - 2 * (y2 + z2) * sinA2; + mat.m12 = 2 * (x * y * sinA2 + z * sinA * cosA); + mat.m13 = 2 * (x * z * sinA2 - y * sinA * cosA); + mat.m21 = 2 * (y * x * sinA2 - z * sinA * cosA); + mat.m22 = 1 - 2 * (z2 + x2) * sinA2; + mat.m23 = 2 * (y * z * sinA2 + x * sinA * cosA); + mat.m31 = 2 * (z * x * sinA2 + y * sinA * cosA); + mat.m32 = 2 * (z * y * sinA2 - x * sinA * cosA); + mat.m33 = 1 - 2 * (x2 + y2) * sinA2; + mat.m14 = mat.m24 = mat.m34 = 0; + mat.m41 = mat.m42 = mat.m43 = 0; + mat.m44 = 1; + } + this.multRight(mat); +} + +CanvasMatrix4.prototype.multRight = function(mat) +{ + var m11 = (this.m11 * mat.m11 + this.m12 * mat.m21 + + this.m13 * mat.m31 + this.m14 * mat.m41); + var m12 = (this.m11 * mat.m12 + this.m12 * mat.m22 + + this.m13 * mat.m32 + this.m14 * mat.m42); + var m13 = (this.m11 * mat.m13 + this.m12 * mat.m23 + + this.m13 * mat.m33 + this.m14 * mat.m43); + var m14 = (this.m11 * mat.m14 + this.m12 * mat.m24 + + this.m13 * mat.m34 + this.m14 * mat.m44); + + var m21 = (this.m21 * mat.m11 + this.m22 * mat.m21 + + this.m23 * mat.m31 + this.m24 * mat.m41); + var m22 = (this.m21 * mat.m12 + this.m22 * mat.m22 + + this.m23 * mat.m32 + this.m24 * mat.m42); + var m23 = (this.m21 * mat.m13 + this.m22 * mat.m23 + + this.m23 * mat.m33 + this.m24 * mat.m43); + var m24 = (this.m21 * mat.m14 + this.m22 * mat.m24 + + this.m23 * mat.m34 + this.m24 * mat.m44); + + var m31 = (this.m31 * mat.m11 + this.m32 * mat.m21 + + this.m33 * mat.m31 + this.m34 * mat.m41); + var m32 = (this.m31 * mat.m12 + this.m32 * mat.m22 + + this.m33 * mat.m32 + this.m34 * mat.m42); + var m33 = (this.m31 * mat.m13 + this.m32 * mat.m23 + + this.m33 * mat.m33 + this.m34 * mat.m43); + var m34 = (this.m31 * mat.m14 + this.m32 * mat.m24 + + this.m33 * mat.m34 + this.m34 * mat.m44); + + var m41 = (this.m41 * mat.m11 + this.m42 * mat.m21 + + this.m43 * mat.m31 + this.m44 * mat.m41); + var m42 = (this.m41 * mat.m12 + this.m42 * mat.m22 + + this.m43 * mat.m32 + this.m44 * mat.m42); + var m43 = (this.m41 * mat.m13 + this.m42 * mat.m23 + + this.m43 * mat.m33 + this.m44 * mat.m43); + var m44 = (this.m41 * mat.m14 + this.m42 * mat.m24 + + this.m43 * mat.m34 + this.m44 * mat.m44); + + this.m11 = m11; + this.m12 = m12; + this.m13 = m13; + this.m14 = m14; + + this.m21 = m21; + this.m22 = m22; + this.m23 = m23; + this.m24 = m24; + + this.m31 = m31; + this.m32 = m32; + this.m33 = m33; + this.m34 = m34; + + this.m41 = m41; + this.m42 = m42; + this.m43 = m43; + this.m44 = m44; +} + +CanvasMatrix4.prototype.multLeft = function(mat) +{ + var m11 = (mat.m11 * this.m11 + mat.m12 * this.m21 + + mat.m13 * this.m31 + mat.m14 * this.m41); + var m12 = (mat.m11 * this.m12 + mat.m12 * this.m22 + + mat.m13 * this.m32 + mat.m14 * this.m42); + var m13 = (mat.m11 * this.m13 + mat.m12 * this.m23 + + mat.m13 * this.m33 + mat.m14 * this.m43); + var m14 = (mat.m11 * this.m14 + mat.m12 * this.m24 + + mat.m13 * this.m34 + mat.m14 * this.m44); + + var m21 = (mat.m21 * this.m11 + mat.m22 * this.m21 + + mat.m23 * this.m31 + mat.m24 * this.m41); + var m22 = (mat.m21 * this.m12 + mat.m22 * this.m22 + + mat.m23 * this.m32 + mat.m24 * this.m42); + var m23 = (mat.m21 * this.m13 + mat.m22 * this.m23 + + mat.m23 * this.m33 + mat.m24 * this.m43); + var m24 = (mat.m21 * this.m14 + mat.m22 * this.m24 + + mat.m23 * this.m34 + mat.m24 * this.m44); + + var m31 = (mat.m31 * this.m11 + mat.m32 * this.m21 + + mat.m33 * this.m31 + mat.m34 * this.m41); + var m32 = (mat.m31 * this.m12 + mat.m32 * this.m22 + + mat.m33 * this.m32 + mat.m34 * this.m42); + var m33 = (mat.m31 * this.m13 + mat.m32 * this.m23 + + mat.m33 * this.m33 + mat.m34 * this.m43); + var m34 = (mat.m31 * this.m14 + mat.m32 * this.m24 + + mat.m33 * this.m34 + mat.m34 * this.m44); + + var m41 = (mat.m41 * this.m11 + mat.m42 * this.m21 + + mat.m43 * this.m31 + mat.m44 * this.m41); + var m42 = (mat.m41 * this.m12 + mat.m42 * this.m22 + + mat.m43 * this.m32 + mat.m44 * this.m42); + var m43 = (mat.m41 * this.m13 + mat.m42 * this.m23 + + mat.m43 * this.m33 + mat.m44 * this.m43); + var m44 = (mat.m41 * this.m14 + mat.m42 * this.m24 + + mat.m43 * this.m34 + mat.m44 * this.m44); + + this.m11 = m11; + this.m12 = m12; + this.m13 = m13; + this.m14 = m14; + + this.m21 = m21; + this.m22 = m22; + this.m23 = m23; + this.m24 = m24; + + this.m31 = m31; + this.m32 = m32; + this.m33 = m33; + this.m34 = m34; + + this.m41 = m41; + this.m42 = m42; + this.m43 = m43; + this.m44 = m44; +} + +CanvasMatrix4.prototype.ortho = function(left, right, bottom, top, near, far) +{ + var tx = (left + right) / (left - right); + var ty = (top + bottom) / (top - bottom); + var tz = (far + near) / (far - near); + + var matrix = new CanvasMatrix4(); + matrix.m11 = 2 / (left - right); + matrix.m12 = 0; + matrix.m13 = 0; + matrix.m14 = 0; + matrix.m21 = 0; + matrix.m22 = 2 / (top - bottom); + matrix.m23 = 0; + matrix.m24 = 0; + matrix.m31 = 0; + matrix.m32 = 0; + matrix.m33 = -2 / (far - near); + matrix.m34 = 0; + matrix.m41 = tx; + matrix.m42 = ty; + matrix.m43 = tz; + matrix.m44 = 1; + + this.multRight(matrix); +} + +CanvasMatrix4.prototype.frustum = function(left, right, bottom, top, near, far) +{ + var matrix = new CanvasMatrix4(); + var A = (right + left) / (right - left); + var B = (top + bottom) / (top - bottom); + var C = -(far + near) / (far - near); + var D = -(2 * far * near) / (far - near); + + matrix.m11 = (2 * near) / (right - left); + matrix.m12 = 0; + matrix.m13 = 0; + matrix.m14 = 0; + + matrix.m21 = 0; + matrix.m22 = 2 * near / (top - bottom); + matrix.m23 = 0; + matrix.m24 = 0; + + matrix.m31 = A; + matrix.m32 = B; + matrix.m33 = C; + matrix.m34 = -1; + + matrix.m41 = 0; + matrix.m42 = 0; + matrix.m43 = D; + matrix.m44 = 0; + + this.multRight(matrix); +} + +CanvasMatrix4.prototype.perspective = function(fovy, aspect, zNear, zFar) +{ + var top = Math.tan(fovy * Math.PI / 360) * zNear; + var bottom = -top; + var left = aspect * bottom; + var right = aspect * top; + this.frustum(left, right, bottom, top, zNear, zFar); +} + +CanvasMatrix4.prototype.lookat = function(eyex, eyey, eyez, centerx, centery, centerz, upx, upy, upz) +{ + var matrix = new CanvasMatrix4(); + + // Make rotation matrix + + // Z vector + var zx = eyex - centerx; + var zy = eyey - centery; + var zz = eyez - centerz; + var mag = Math.sqrt(zx * zx + zy * zy + zz * zz); + if (mag) { + zx /= mag; + zy /= mag; + zz /= mag; + } + + // Y vector + var yx = upx; + var yy = upy; + var yz = upz; + + // X vector = Y cross Z + xx = yy * zz - yz * zy; + xy = -yx * zz + yz * zx; + xz = yx * zy - yy * zx; + + // Recompute Y = Z cross X + yx = zy * xz - zz * xy; + yy = -zx * xz + zz * xx; + yx = zx * xy - zy * xx; + + // cross product gives area of parallelogram, which is < 1.0 for + // non-perpendicular unit-length vectors; so normalize x, y here + + mag = Math.sqrt(xx * xx + xy * xy + xz * xz); + if (mag) { + xx /= mag; + xy /= mag; + xz /= mag; + } + + mag = Math.sqrt(yx * yx + yy * yy + yz * yz); + if (mag) { + yx /= mag; + yy /= mag; + yz /= mag; + } + + matrix.m11 = xx; + matrix.m12 = xy; + matrix.m13 = xz; + matrix.m14 = 0; + + matrix.m21 = yx; + matrix.m22 = yy; + matrix.m23 = yz; + matrix.m24 = 0; + + matrix.m31 = zx; + matrix.m32 = zy; + matrix.m33 = zz; + matrix.m34 = 0; + + matrix.m41 = 0; + matrix.m42 = 0; + matrix.m43 = 0; + matrix.m44 = 1; + matrix.translate(-eyex, -eyey, -eyez); + + this.multRight(matrix); +} + +// Support functions +CanvasMatrix4.prototype._determinant2x2 = function(a, b, c, d) +{ + return a * d - b * c; +} + +CanvasMatrix4.prototype._determinant3x3 = function(a1, a2, a3, b1, b2, b3, c1, c2, c3) +{ + return a1 * this._determinant2x2(b2, b3, c2, c3) + - b1 * this._determinant2x2(a2, a3, c2, c3) + + c1 * this._determinant2x2(a2, a3, b2, b3); +} + +CanvasMatrix4.prototype._determinant4x4 = function() +{ + var a1 = this.m11; + var b1 = this.m12; + var c1 = this.m13; + var d1 = this.m14; + + var a2 = this.m21; + var b2 = this.m22; + var c2 = this.m23; + var d2 = this.m24; + + var a3 = this.m31; + var b3 = this.m32; + var c3 = this.m33; + var d3 = this.m34; + + var a4 = this.m41; + var b4 = this.m42; + var c4 = this.m43; + var d4 = this.m44; + + return a1 * this._determinant3x3(b2, b3, b4, c2, c3, c4, d2, d3, d4) + - b1 * this._determinant3x3(a2, a3, a4, c2, c3, c4, d2, d3, d4) + + c1 * this._determinant3x3(a2, a3, a4, b2, b3, b4, d2, d3, d4) + - d1 * this._determinant3x3(a2, a3, a4, b2, b3, b4, c2, c3, c4); +} + +CanvasMatrix4.prototype._makeAdjoint = function() +{ + var a1 = this.m11; + var b1 = this.m12; + var c1 = this.m13; + var d1 = this.m14; + + var a2 = this.m21; + var b2 = this.m22; + var c2 = this.m23; + var d2 = this.m24; + + var a3 = this.m31; + var b3 = this.m32; + var c3 = this.m33; + var d3 = this.m34; + + var a4 = this.m41; + var b4 = this.m42; + var c4 = this.m43; + var d4 = this.m44; + + // Row column labeling reversed since we transpose rows & columns + this.m11 = this._determinant3x3(b2, b3, b4, c2, c3, c4, d2, d3, d4); + this.m21 = - this._determinant3x3(a2, a3, a4, c2, c3, c4, d2, d3, d4); + this.m31 = this._determinant3x3(a2, a3, a4, b2, b3, b4, d2, d3, d4); + this.m41 = - this._determinant3x3(a2, a3, a4, b2, b3, b4, c2, c3, c4); + + this.m12 = - this._determinant3x3(b1, b3, b4, c1, c3, c4, d1, d3, d4); + this.m22 = this._determinant3x3(a1, a3, a4, c1, c3, c4, d1, d3, d4); + this.m32 = - this._determinant3x3(a1, a3, a4, b1, b3, b4, d1, d3, d4); + this.m42 = this._determinant3x3(a1, a3, a4, b1, b3, b4, c1, c3, c4); + + this.m13 = this._determinant3x3(b1, b2, b4, c1, c2, c4, d1, d2, d4); + this.m23 = - this._determinant3x3(a1, a2, a4, c1, c2, c4, d1, d2, d4); + this.m33 = this._determinant3x3(a1, a2, a4, b1, b2, b4, d1, d2, d4); + this.m43 = - this._determinant3x3(a1, a2, a4, b1, b2, b4, c1, c2, c4); + + this.m14 = - this._determinant3x3(b1, b2, b3, c1, c2, c3, d1, d2, d3); + this.m24 = this._determinant3x3(a1, a2, a3, c1, c2, c3, d1, d2, d3); + this.m34 = - this._determinant3x3(a1, a2, a3, b1, b2, b3, d1, d2, d3); + this.m44 = this._determinant3x3(a1, a2, a3, b1, b2, b3, c1, c2, c3); +} diff --git a/WebCore/manual-tests/webgl/resources/earthmap1k.jpg b/WebCore/manual-tests/webgl/resources/earthmap1k.jpg Binary files differnew file mode 100644 index 0000000..7dcab8a --- /dev/null +++ b/WebCore/manual-tests/webgl/resources/earthmap1k.jpg diff --git a/WebCore/manual-tests/webgl/resources/mars500x250.png b/WebCore/manual-tests/webgl/resources/mars500x250.png Binary files differnew file mode 100644 index 0000000..f38ef09 --- /dev/null +++ b/WebCore/manual-tests/webgl/resources/mars500x250.png diff --git a/WebCore/manual-tests/webgl/resources/teapot.obj b/WebCore/manual-tests/webgl/resources/teapot.obj new file mode 100644 index 0000000..b6c6810 --- /dev/null +++ b/WebCore/manual-tests/webgl/resources/teapot.obj @@ -0,0 +1,2866 @@ +# Max2Obj Version 4.0 Mar 10th, 2001 +# +# object Teapot01 to come ... +# +v 5.929688 4.125000 0.000000 +v 5.832031 4.494141 0.000000 +v 5.945313 4.617188 0.000000 +v 6.175781 4.494141 0.000000 +v 6.429688 4.125000 0.000000 +v 5.387188 4.125000 2.747500 +v 5.297100 4.494141 2.709170 +v 5.401602 4.617188 2.753633 +v 5.614209 4.494141 2.844092 +v 5.848437 4.125000 2.943750 +v 3.899688 4.125000 4.970000 +v 3.830352 4.494141 4.900664 +v 3.910782 4.617188 4.981094 +v 4.074414 4.494141 5.144727 +v 4.254687 4.125000 5.325000 +v 1.677188 4.125000 6.457500 +v 1.638858 4.494141 6.367412 +v 1.683320 4.617188 6.471914 +v 1.773780 4.494141 6.684522 +v 1.873438 4.125000 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462/786/462 466/791/466 527/792/527 +f 527/792/527 523/787/523 462/786/462 +f 523/787/523 527/792/527 528/793/528 +f 528/793/528 524/788/524 523/787/523 +f 524/788/524 528/793/528 529/794/529 +f 529/794/529 525/789/525 524/788/524 +f 525/789/525 529/794/529 530/795/530 +f 530/795/530 526/790/526 525/789/525 +f 466/791/466 406/796/406 467/797/467 +f 467/797/467 527/792/527 466/791/466 +f 527/792/527 467/797/467 468/798/468 +f 468/798/468 528/793/528 527/792/527 +f 528/793/528 468/798/468 469/799/469 +f 469/799/469 529/794/529 528/793/528 +f 529/794/529 469/799/469 470/800/470 +f 470/800/470 530/795/530 529/794/529 +# 992 faces + +g diff --git a/WebCore/manual-tests/webgl/resources/utils3d.js b/WebCore/manual-tests/webgl/resources/utils3d.js new file mode 100644 index 0000000..0ffd7c4 --- /dev/null +++ b/WebCore/manual-tests/webgl/resources/utils3d.js @@ -0,0 +1,531 @@ +// +// initWebGL +// +// Initialize the Canvas element with the passed name as a WebGL object and return the +// CanvasRenderingContext3D. +// +// 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) +{ + var canvas = document.getElementById(canvasName); + var gl = canvas.getContext("webkit-3d"); + + // create our shaders + var vertexShader = loadShader(gl, vshader); + var fragmentShader = loadShader(gl, fshader); + + if (!vertexShader || !fragmentShader) + return null; + + // Create the program object + gl.program = gl.createProgram(); + + if (!gl.program) + return null; + + // Attach our two shaders to the program + gl.attachShader (gl.program, vertexShader); + gl.attachShader (gl.program, fragmentShader); + + // Bind attributes + for (var i in attribs) + gl.bindAttribLocation (gl.program, i, attribs[i]); + + // Link the program + gl.linkProgram(gl.program); + + // Check the link status + var linked = gl.getProgrami(gl.program, gl.LINK_STATUS); + if (!linked) { + // something went wrong with the link + var error = gl.getProgramInfoLog (gl.program); + console.log("Error in program linking:"+error); + + gl.deleteProgram(gl.program); + gl.deleteProgram(fragmentShader); + gl.deleteProgram(vertexShader); + + 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; +} + +// +// loadShader +// +// 'shaderId' is the id of a <script> element containing the shader source string. +// Load this shader and return the CanvasShader object corresponding to it. +// +function loadShader(ctx, shaderId) +{ + var shaderScript = document.getElementById(shaderId); + if (!shaderScript) { + console.log("*** Error: shader script '"+shaderId+"' not found"); + return null; + } + + if (shaderScript.type == "x-shader/x-vertex") + var shaderType = ctx.VERTEX_SHADER; + else if (shaderScript.type == "x-shader/x-fragment") + var shaderType = ctx.FRAGMENT_SHADER; + else { + console.log("*** Error: shader script '"+shaderId+"' of undefined type '"+shaderScript.type+"'"); + return null; + } + + // Create the shader object + var shader = ctx.createShader(shaderType); + if (shader == null) { + console.log("*** Error: unable to create shader '"+shaderId+"'"); + return null; + } + + // Load the shader source + ctx.shaderSource(shader, shaderScript.text); + + // Compile the shader + ctx.compileShader(shader); + + // Check the compile status + var compiled = ctx.getShaderi(shader, ctx.COMPILE_STATUS); + if (!compiled) { + // Something went wrong during compilation; get the error + var error = ctx.getShaderInfoLog(shader); + console.log("*** Error compiling shader '"+shaderId+"':"+error); + ctx.deleteShader(shader); + return null; + } + + return shader; +} + +// +// 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 CanvasBuffer object for normals +// texCoordObject CanvasBuffer object for texCoords +// vertexObject CanvasBuffer object for vertices +// indexObject CanvasBuffer 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 CanvasFloatArray( + [ 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 CanvasFloatArray( + [ 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 CanvasFloatArray( + [ 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 CanvasUnsignedByteArray( + [ 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 CanvasBuffer object for normals +// texCoordObject CanvasBuffer object for texCoords +// vertexObject CanvasBuffer object for vertices +// indexObject CanvasBuffer 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 CanvasFloatArray(normalData), ctx.STATIC_DRAW); + + retval.texCoordObject = ctx.createBuffer(); + ctx.bindBuffer(ctx.ARRAY_BUFFER, retval.texCoordObject); + ctx.bufferData(ctx.ARRAY_BUFFER, new CanvasFloatArray(texCoordData), ctx.STATIC_DRAW); + + retval.vertexObject = ctx.createBuffer(); + ctx.bindBuffer(ctx.ARRAY_BUFFER, retval.vertexObject); + ctx.bufferData(ctx.ARRAY_BUFFER, new CanvasFloatArray(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 CanvasUnsignedShortArray(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 CanvasBuffer object for normals +// texCoordObject CanvasBuffer object for texCoords +// vertexObject CanvasBuffer object for vertices +// indexObject CanvasBuffer 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) +{ + console.log("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) { + console.log("*** 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 { + console.log("*** 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 CanvasFloatArray(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 CanvasFloatArray(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 CanvasFloatArray(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 CanvasUnsignedShortArray(indexArray), obj.ctx.STREAM_DRAW); + + obj.loaded = true; +} + +// +// loadImageTexture +// +// Load the image at the passed url, place it in a new CanvasTexture object and return the CanvasTexture. +// +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, 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; + } +} + |
