webglimpse
Version:
Webglimpse is a data visualization library for the web.
295 lines • 39.5 kB
JavaScript
/*
* Copyright (c) 2014, Metron, 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.
*
* 3. Neither the name of the copyright holder nor the names of its contributors
* may be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER 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.
*/
import { GL, getObjectId, hasval } from './util/util';
function compileShader(gl, shaderType, glsl) {
const shader = gl.createShader(shaderType);
gl.shaderSource(shader, glsl);
gl.compileShader(shader);
if (!gl.getShaderParameter(shader, GL.COMPILE_STATUS)) {
throw new Error(gl.getShaderInfoLog(shader));
}
return shader;
}
function linkProgram(gl, shaders) {
const program = gl.createProgram();
for (let i = 0; i < shaders.length; i++) {
gl.attachShader(program, shaders[i]);
}
try {
gl.linkProgram(program);
if (!gl.getProgramParameter(program, GL.LINK_STATUS)) {
throw new Error(gl.getProgramInfoLog(program));
}
return program;
}
finally {
// It's good GL practice to detach and delete shaders after they have been linked
// into a program, and are no longer needed. However, on some versions of Firefox,
// doing so causes getAttribLocation and getUniformLocation to fail.
//
// for ( var i = 0; i < shaders.length; i++ ) {
// gl.detachShader( program, shaders[ i ] );
// }
}
}
function createProgram(gl, vertShaderSource, fragShaderSource) {
const shaders = [];
try {
shaders.push(compileShader(gl, GL.VERTEX_SHADER, vertShaderSource));
shaders.push(compileShader(gl, GL.FRAGMENT_SHADER, fragShaderSource));
return linkProgram(gl, shaders);
}
finally {
// It's good GL practice to detach and delete shaders after they have been linked
// into a program, and are no longer needed. However, on some versions of Firefox,
// doing so causes getAttribLocation and getUniformLocation to fail.
//
// for ( var i = 0; i < shaders.length; i++ ) {
// gl.deleteShader( shaders[ i ] );
// }
}
}
class ProgramEntry {
constructor(gl, program) {
this.gl = gl;
this.program = program;
}
}
export class Program {
constructor(vertShaderSource, fragShaderSource) {
this.programs = {};
this.vertShaderSource = vertShaderSource;
this.fragShaderSource = fragShaderSource;
}
// XXX: Would be nice if this weren't public
_program(gl) {
const glId = getObjectId(gl);
if (this.programs[glId] === undefined) {
const program = createProgram(gl, this.vertShaderSource, this.fragShaderSource);
this.programs[glId] = new ProgramEntry(gl, program);
}
return this.programs[glId].program;
}
use(gl) {
gl.useProgram(this._program(gl));
}
endUse(gl) {
gl.useProgram(null);
}
dispose() {
// XXX: Not sure this actually works ... may have to make each gl current or something
for (const glid in this.programs) {
if (this.programs.hasOwnProperty(glid)) {
const en = this.programs[glid];
en.gl.deleteProgram(en.program);
}
}
this.programs = {};
}
}
export class Uniform {
constructor(program, name, optional) {
this.locations = {};
this.program = program;
this.name = name;
this.optional = optional;
}
// XXX: Would be nice if this weren't public
_location(gl) {
const glId = getObjectId(gl);
if (this.locations[glId] === undefined) {
const location = gl.getUniformLocation(this.program._program(gl), this.name);
if (!this.optional && !hasval(location)) {
throw new Error('Uniform \'' + this.name + '\' not found');
}
this.locations[glId] = location;
}
return this.locations[glId];
}
}
export class Uniform1f extends Uniform {
constructor(program, name, optional = false) {
super(program, name, optional);
}
setData(gl, x) {
const location = this._location(gl);
if (hasval(location)) {
gl.uniform1f(location, x);
}
}
}
export class Uniform2f extends Uniform {
constructor(program, name, optional = false) {
super(program, name, optional);
}
setData(gl, x, y) {
const location = this._location(gl);
if (hasval(location)) {
gl.uniform2f(location, x, y);
}
}
}
export class Uniform3f extends Uniform {
constructor(program, name, optional = false) {
super(program, name, optional);
}
setData(gl, x, y, z) {
const location = this._location(gl);
if (hasval(location)) {
gl.uniform3f(location, x, y, z);
}
}
}
export class Uniform4f extends Uniform {
constructor(program, name, optional = false) {
super(program, name, optional);
}
setData(gl, x, y, z, w) {
const location = this._location(gl);
if (hasval(location)) {
gl.uniform4f(location, x, y, z, w);
}
}
}
export class UniformMatrix4f extends Uniform {
constructor(program, name, optional = false) {
super(program, name, optional);
}
setData(gl, value, transpose = false) {
const location = this._location(gl);
if (hasval(location)) {
gl.uniformMatrix4fv(location, transpose, value);
}
}
}
export class Uniform1i extends Uniform {
constructor(program, name, optional = false) {
super(program, name, optional);
}
setData(gl, x) {
const location = this._location(gl);
if (hasval(location)) {
gl.uniform1i(location, x);
}
}
}
export class Uniform2i extends Uniform {
constructor(program, name, optional = false) {
super(program, name, optional);
}
setData(gl, x, y) {
const location = this._location(gl);
if (hasval(location)) {
gl.uniform2i(location, x, y);
}
}
}
export class Uniform3i extends Uniform {
constructor(program, name, optional = false) {
super(program, name, optional);
}
setData(gl, x, y, z) {
const location = this._location(gl);
if (hasval(location)) {
gl.uniform3i(location, x, y, z);
}
}
}
export class Uniform4i extends Uniform {
constructor(program, name, optional = false) {
super(program, name, optional);
}
setData(gl, x, y, z, w) {
const location = this._location(gl);
if (hasval(location)) {
gl.uniform4i(location, x, y, z, w);
}
}
}
export class UniformColor extends Uniform {
constructor(program, name, optional = false) {
super(program, name, optional);
}
setData(gl, color) {
const location = this._location(gl);
if (hasval(location)) {
gl.uniform4f(location, color.r, color.g, color.b, color.a);
}
}
}
export class UniformSampler2D extends Uniform {
constructor(program, name, optional = false) {
super(program, name, optional);
}
setDataAndBind(gl, textureUnit, texture) {
const location = this._location(gl);
if (hasval(location)) {
texture.bind(gl, textureUnit);
gl.uniform1i(location, textureUnit);
this.currentTexture = texture;
}
}
unbind(gl) {
if (hasval(this.currentTexture)) {
this.currentTexture.unbind(gl);
this.currentTexture = null;
}
}
}
export class Attribute {
constructor(program, name) {
this.locations = {};
this.program = program;
this.name = name;
}
// XXX: Would be nice if this weren't public
_location(gl) {
const glId = getObjectId(gl);
if (this.locations[glId] === undefined) {
const location = gl.getAttribLocation(this.program._program(gl), this.name);
if (location === -1) {
throw new Error('Attribute "' + this.name + '" not found');
}
this.locations[glId] = location;
}
return this.locations[glId];
}
setDataAndEnable(gl, buffer, size, type, normalized = false, stride = 0, offset = 0) {
const location = this._location(gl);
gl.enableVertexAttribArray(location);
buffer.bind(gl, GL.ARRAY_BUFFER);
gl.vertexAttribPointer(location, size, type, normalized, stride, offset);
buffer.unbind(gl, GL.ARRAY_BUFFER);
}
disable(gl) {
gl.disableVertexAttribArray(this._location(gl));
}
}
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* Copyright (c) 2014, Metron, Inc.\r\n * All rights reserved.\r\n *\r\n * Redistribution and use in source and binary forms, with or without modification,\r\n * are permitted provided that the following conditions are met:\r\n *\r\n * 1. Redistributions of source code must retain the above copyright notice, this\r\n *    list of conditions and the following disclaimer.\r\n *\r\n * 2. Redistributions in binary form must reproduce the above copyright notice,\r\n *    this list of conditions and the following disclaimer in the documentation\r\n *    and/or other materials provided with the distribution.\r\n *\r\n * 3. Neither the name of the copyright holder nor the names of its contributors\r\n *    may be used to endorse or promote products derived from this software without\r\n *    specific prior written permission.\r\n *\r\n * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS \"AS IS\" AND\r\n * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED\r\n * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE\r\n * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR\r\n * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES\r\n * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;\r\n * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON\r\n * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\r\n * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS\r\n * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\r\n */\r\nimport { GL, StringMap, getObjectId, hasval } from './util/util';\r\nimport { Color } from './color';\r\nimport { Texture } from './texture';\r\nimport { Buffer } from './buffer';\r\n\r\nfunction compileShader(gl: WebGLRenderingContext, shaderType: number, glsl: string): WebGLShader {\r\n    const shader = gl.createShader(shaderType);\r\n    gl.shaderSource(shader, glsl);\r\n\r\n    gl.compileShader(shader);\r\n    if (!gl.getShaderParameter(shader, GL.COMPILE_STATUS)) {\r\n        throw new Error(gl.getShaderInfoLog(shader));\r\n    }\r\n\r\n    return shader;\r\n}\r\n\r\nfunction linkProgram(gl: WebGLRenderingContext, shaders: WebGLShader[]): WebGLProgram {\r\n    const program = gl.createProgram();\r\n    for (let i = 0; i < shaders.length; i++) {\r\n        gl.attachShader(program, shaders[i]);\r\n    }\r\n    try {\r\n        gl.linkProgram(program);\r\n        if (!gl.getProgramParameter(program, GL.LINK_STATUS)) {\r\n            throw new Error(gl.getProgramInfoLog(program));\r\n        }\r\n        return program;\r\n    }\r\n    finally {\r\n        // It's good GL practice to detach and delete shaders after they have been linked\r\n        // into a program, and are no longer needed. However, on some versions of Firefox,\r\n        // doing so causes getAttribLocation and getUniformLocation to fail.\r\n        //\r\n        // for ( var i = 0; i < shaders.length; i++ ) {\r\n        //    gl.detachShader( program, shaders[ i ] );\r\n        // }\r\n    }\r\n}\r\n\r\nfunction createProgram(gl: WebGLRenderingContext, vertShaderSource: string, fragShaderSource: string): WebGLProgram {\r\n    const shaders = [];\r\n    try {\r\n        shaders.push(compileShader(gl, GL.VERTEX_SHADER, vertShaderSource));\r\n        shaders.push(compileShader(gl, GL.FRAGMENT_SHADER, fragShaderSource));\r\n        return linkProgram(gl, shaders);\r\n    }\r\n    finally {\r\n        // It's good GL practice to detach and delete shaders after they have been linked\r\n        // into a program, and are no longer needed. However, on some versions of Firefox,\r\n        // doing so causes getAttribLocation and getUniformLocation to fail.\r\n        //\r\n        // for ( var i = 0; i < shaders.length; i++ ) {\r\n        //    gl.deleteShader( shaders[ i ] );\r\n        // }\r\n    }\r\n}\r\n\r\n\r\nclass ProgramEntry {\r\n    gl: WebGLRenderingContext;\r\n    program: WebGLProgram;\r\n\r\n    constructor(gl: WebGLRenderingContext, program: WebGLProgram) {\r\n        this.gl = gl;\r\n        this.program = program;\r\n    }\r\n}\r\n\r\nexport class Program {\r\n    private vertShaderSource: string;\r\n    private fragShaderSource: string;\r\n    private programs: StringMap<ProgramEntry> = {};\r\n\r\n    constructor(vertShaderSource: string, fragShaderSource: string) {\r\n        this.vertShaderSource = vertShaderSource;\r\n        this.fragShaderSource = fragShaderSource;\r\n    }\r\n\r\n    // XXX: Would be nice if this weren't public\r\n    _program(gl: WebGLRenderingContext): WebGLProgram {\r\n        const glId = getObjectId(gl);\r\n        if (this.programs[glId] === undefined) {\r\n            const program = createProgram(gl, this.vertShaderSource, this.fragShaderSource);\r\n            this.programs[glId] = new ProgramEntry(gl, program);\r\n        }\r\n        return this.programs[glId].program;\r\n    }\r\n\r\n    use(gl: WebGLRenderingContext) {\r\n        gl.useProgram(this._program(gl));\r\n    }\r\n\r\n    endUse(gl: WebGLRenderingContext) {\r\n        gl.useProgram(null);\r\n    }\r\n\r\n    dispose() {\r\n        // XXX: Not sure this actually works ... may have to make each gl current or something\r\n        for (const glid in this.programs) {\r\n            if (this.programs.hasOwnProperty(glid)) {\r\n                const en = this.programs[glid];\r\n                en.gl.deleteProgram(en.program);\r\n            }\r\n        }\r\n        this.programs = {};\r\n    }\r\n}\r\n\r\n\r\nexport class Uniform {\r\n    private program: Program;\r\n    private name: string;\r\n    private optional: boolean;\r\n    private locations: StringMap<WebGLUniformLocation> = {};\r\n\r\n    constructor(program: Program, name: string, optional: boolean) {\r\n        this.program = program;\r\n        this.name = name;\r\n        this.optional = optional;\r\n    }\r\n\r\n    // XXX: Would be nice if this weren't public\r\n    _location(gl: WebGLRenderingContext): WebGLUniformLocation {\r\n        const glId = getObjectId(gl);\r\n        if (this.locations[glId] === undefined) {\r\n            const location = gl.getUniformLocation(this.program._program(gl), this.name);\r\n            if (!this.optional && !hasval(location)) {\r\n                throw new Error('Uniform \\'' + this.name + '\\' not found');\r\n            }\r\n            this.locations[glId] = location;\r\n        }\r\n        return this.locations[glId];\r\n    }\r\n}\r\n\r\n\r\nexport class Uniform1f extends Uniform {\r\n    constructor(program: Program, name: string, optional: boolean = false) {\r\n        super(program, name, optional);\r\n    }\r\n\r\n    setData(gl: WebGLRenderingContext, x: number) {\r\n        const location = this._location(gl);\r\n        if (hasval(location)) {\r\n            gl.uniform1f(location, x);\r\n        }\r\n    }\r\n}\r\n\r\nexport class Uniform2f extends Uniform {\r\n    constructor(program: Program, name: string, optional: boolean = false) {\r\n        super(program, name, optional);\r\n    }\r\n\r\n    setData(gl: WebGLRenderingContext, x: number, y: number) {\r\n        const location = this._location(gl);\r\n        if (hasval(location)) {\r\n            gl.uniform2f(location, x, y);\r\n        }\r\n    }\r\n}\r\n\r\nexport class Uniform3f extends Uniform {\r\n    constructor(program: Program, name: string, optional: boolean = false) {\r\n        super(program, name, optional);\r\n    }\r\n\r\n    setData(gl: WebGLRenderingContext, x: number, y: number, z: number) {\r\n        const location = this._location(gl);\r\n        if (hasval(location)) {\r\n            gl.uniform3f(location, x, y, z);\r\n        }\r\n    }\r\n}\r\n\r\nexport class Uniform4f extends Uniform {\r\n    constructor(program: Program, name: string, optional: boolean = false) {\r\n        super(program, name, optional);\r\n    }\r\n\r\n    setData(gl: WebGLRenderingContext, x: number, y: number, z: number, w: number) {\r\n        const location = this._location(gl);\r\n        if (hasval(location)) {\r\n            gl.uniform4f(location, x, y, z, w);\r\n        }\r\n    }\r\n}\r\n\r\nexport class UniformMatrix4f extends Uniform {\r\n    constructor(program: Program, name: string, optional: boolean = false) {\r\n        super(program, name, optional);\r\n    }\r\n\r\n    setData(gl: WebGLRenderingContext, value: Float32Array, transpose: boolean = false) {\r\n        const location = this._location(gl);\r\n        if (hasval(location)) {\r\n            gl.uniformMatrix4fv(location, transpose, value);\r\n        }\r\n    }\r\n}\r\n\r\nexport class Uniform1i extends Uniform {\r\n    constructor(program: Program, name: string, optional: boolean = false) {\r\n        super(program, name, optional);\r\n    }\r\n\r\n    setData(gl: WebGLRenderingContext, x: number) {\r\n        const location = this._location(gl);\r\n        if (hasval(location)) {\r\n            gl.uniform1i(location, x);\r\n        }\r\n    }\r\n}\r\n\r\nexport class Uniform2i extends Uniform {\r\n    constructor(program: Program, name: string, optional: boolean = false) {\r\n        super(program, name, optional);\r\n    }\r\n\r\n    setData(gl: WebGLRenderingContext, x: number, y: number) {\r\n        const location = this._location(gl);\r\n        if (hasval(location)) {\r\n            gl.uniform2i(location, x, y);\r\n        }\r\n    }\r\n}\r\n\r\nexport class Uniform3i extends Uniform {\r\n    constructor(program: Program, name: string, optional: boolean = false) {\r\n        super(program, name, optional);\r\n    }\r\n\r\n    setData(gl: WebGLRenderingContext, x: number, y: number, z: number) {\r\n        const location = this._location(gl);\r\n        if (hasval(location)) {\r\n            gl.uniform3i(location, x, y, z);\r\n        }\r\n    }\r\n}\r\n\r\nexport class Uniform4i extends Uniform {\r\n    constructor(program: Program, name: string, optional: boolean = false) {\r\n        super(program, name, optional);\r\n    }\r\n\r\n    setData(gl: WebGLRenderingContext, x: number, y: number, z: number, w: number) {\r\n        const location = this._location(gl);\r\n        if (hasval(location)) {\r\n            gl.uniform4i(location, x, y, z, w);\r\n        }\r\n    }\r\n}\r\n\r\nexport class UniformColor extends Uniform {\r\n    constructor(program: Program, name: string, optional: boolean = false) {\r\n        super(program, name, optional);\r\n    }\r\n\r\n    setData(gl: WebGLRenderingContext, color: Color) {\r\n        const location = this._location(gl);\r\n        if (hasval(location)) {\r\n            gl.uniform4f(location, color.r, color.g, color.b, color.a);\r\n        }\r\n    }\r\n}\r\n\r\n\r\nexport class UniformSampler2D extends Uniform {\r\n    private currentTexture: Texture;\r\n\r\n    constructor(program: Program, name: string, optional: boolean = false) {\r\n        super(program, name, optional);\r\n    }\r\n\r\n    setDataAndBind(gl: WebGLRenderingContext, textureUnit: number, texture: Texture) {\r\n        const location = this._location(gl);\r\n        if (hasval(location)) {\r\n            texture.bind(gl, textureUnit);\r\n            gl.uniform1i(location, textureUnit);\r\n            this.currentTexture = texture;\r\n        }\r\n    }\r\n\r\n    unbind(gl: WebGLRenderingContext) {\r\n        if (hasval(this.currentTexture)) {\r\n            this.currentTexture.unbind(gl);\r\n            this.currentTexture = null;\r\n        }\r\n    }\r\n}\r\n\r\n\r\nexport class Attribute {\r\n    private program: Program;\r\n    private name: string;\r\n    private locations: StringMap<number> = {};\r\n\r\n    constructor(program: Program, name: string) {\r\n        this.program = program;\r\n        this.name = name;\r\n    }\r\n\r\n    // XXX: Would be nice if this weren't public\r\n    _location(gl: WebGLRenderingContext): number {\r\n        const glId = getObjectId(gl);\r\n        if (this.locations[glId] === undefined) {\r\n            const location = gl.getAttribLocation(this.program._program(gl), this.name);\r\n            if (location === -1) {\r\n                throw new Error('Attribute \"' + this.name + '\" not found');\r\n            }\r\n            this.locations[glId] = location;\r\n        }\r\n        return this.locations[glId];\r\n    }\r\n\r\n    setDataAndEnable(gl: WebGLRenderingContext, buffer: Buffer, size: number, type: number, normalized: boolean = false, stride: number = 0, offset: number = 0) {\r\n        const location = this._location(gl);\r\n        gl.enableVertexAttribArray(location);\r\n        buffer.bind(gl, GL.ARRAY_BUFFER);\r\n        gl.vertexAttribPointer(location, size, type, normalized, stride, offset);\r\n        buffer.unbind(gl, GL.ARRAY_BUFFER);\r\n    }\r\n\r\n    disable(gl: WebGLRenderingContext) {\r\n        gl.disableVertexAttribArray(this._location(gl));\r\n    }\r\n}\r\n\r\n\r\n"]}