@esotericsoftware/spine-webgl
Version:
The official Spine Runtimes for the web.
203 lines • 27.9 kB
JavaScript
/******************************************************************************
* Spine Runtimes License Agreement
* Last updated April 5, 2025. Replaces all prior versions.
*
* Copyright (c) 2013-2025, Esoteric Software LLC
*
* Integration of the Spine Runtimes into software or otherwise creating
* derivative works of the Spine Runtimes is permitted under the terms and
* conditions of Section 2 of the Spine Editor License Agreement:
* http://esotericsoftware.com/spine-editor-license
*
* Otherwise, it is permitted to integrate the Spine Runtimes into software
* or otherwise create derivative works of the Spine Runtimes (collectively,
* "Products"), provided that each user of the Products must obtain their own
* Spine Editor license and redistribution of the Products in any form must
* include this license and copyright notice.
*
* THE SPINE RUNTIMES ARE PROVIDED BY ESOTERIC SOFTWARE LLC "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 ESOTERIC SOFTWARE LLC BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES,
* BUSINESS INTERRUPTION, OR LOSS OF USE, DATA, OR PROFITS) 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
* THE SPINE RUNTIMES, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*****************************************************************************/
import { Shader } from "./Shader.js";
import { ManagedWebGLRenderingContext } from "./WebGL.js";
export class Mesh {
attributes;
context;
vertices;
verticesBuffer = null;
verticesLength = 0;
dirtyVertices = false;
indices;
indicesBuffer = null;
indicesLength = 0;
dirtyIndices = false;
elementsPerVertex = 0;
getAttributes() { return this.attributes; }
maxVertices() { return this.vertices.length / this.elementsPerVertex; }
numVertices() { return this.verticesLength / this.elementsPerVertex; }
setVerticesLength(length) {
this.dirtyVertices = true;
this.verticesLength = length;
}
getVertices() { return this.vertices; }
maxIndices() { return this.indices.length; }
numIndices() { return this.indicesLength; }
setIndicesLength(length) {
this.dirtyIndices = true;
this.indicesLength = length;
}
getIndices() { return this.indices; }
;
getVertexSizeInFloats() {
let size = 0;
for (let i = 0; i < this.attributes.length; i++) {
const attribute = this.attributes[i];
size += attribute.numElements;
}
return size;
}
constructor(context, attributes, maxVertices, maxIndices) {
this.attributes = attributes;
this.context = context instanceof ManagedWebGLRenderingContext ? context : new ManagedWebGLRenderingContext(context);
this.elementsPerVertex = 0;
for (let i = 0; i < attributes.length; i++) {
this.elementsPerVertex += attributes[i].numElements;
}
this.vertices = new Float32Array(maxVertices * this.elementsPerVertex);
this.indices = new Uint16Array(maxIndices);
this.context.addRestorable(this);
}
setVertices(vertices) {
this.dirtyVertices = true;
if (vertices.length > this.vertices.length)
throw Error(`Mesh can't store more than ${this.maxVertices()} vertices`);
this.vertices.set(vertices, 0);
this.verticesLength = vertices.length;
}
setIndices(indices) {
this.dirtyIndices = true;
if (indices.length > this.indices.length)
throw Error(`Mesh can't store more than ${this.maxIndices()} indices`);
this.indices.set(indices, 0);
this.indicesLength = indices.length;
}
draw(shader, primitiveType) {
this.drawWithOffset(shader, primitiveType, 0, this.indicesLength > 0 ? this.indicesLength : this.verticesLength / this.elementsPerVertex);
}
drawWithOffset(shader, primitiveType, offset, count) {
const gl = this.context.gl;
if (this.dirtyVertices || this.dirtyIndices)
this.update();
this.bind(shader);
if (this.indicesLength > 0) {
gl.drawElements(primitiveType, count, gl.UNSIGNED_SHORT, offset * 2);
}
else {
gl.drawArrays(primitiveType, offset, count);
}
this.unbind(shader);
}
bind(shader) {
const gl = this.context.gl;
gl.bindBuffer(gl.ARRAY_BUFFER, this.verticesBuffer);
let offset = 0;
for (let i = 0; i < this.attributes.length; i++) {
const attrib = this.attributes[i];
const location = shader.getAttributeLocation(attrib.name);
gl.enableVertexAttribArray(location);
gl.vertexAttribPointer(location, attrib.numElements, gl.FLOAT, false, this.elementsPerVertex * 4, offset * 4);
offset += attrib.numElements;
}
if (this.indicesLength > 0)
gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, this.indicesBuffer);
}
unbind(shader) {
const gl = this.context.gl;
for (let i = 0; i < this.attributes.length; i++) {
const attrib = this.attributes[i];
const location = shader.getAttributeLocation(attrib.name);
gl.disableVertexAttribArray(location);
}
gl.bindBuffer(gl.ARRAY_BUFFER, null);
if (this.indicesLength > 0)
gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, null);
}
update() {
const gl = this.context.gl;
if (this.dirtyVertices) {
if (!this.verticesBuffer) {
this.verticesBuffer = gl.createBuffer();
}
gl.bindBuffer(gl.ARRAY_BUFFER, this.verticesBuffer);
gl.bufferData(gl.ARRAY_BUFFER, this.vertices.subarray(0, this.verticesLength), gl.DYNAMIC_DRAW);
this.dirtyVertices = false;
}
if (this.dirtyIndices) {
if (!this.indicesBuffer) {
this.indicesBuffer = gl.createBuffer();
}
gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, this.indicesBuffer);
gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, this.indices.subarray(0, this.indicesLength), gl.DYNAMIC_DRAW);
this.dirtyIndices = false;
}
}
restore() {
this.verticesBuffer = null;
this.indicesBuffer = null;
this.update();
}
dispose() {
this.context.removeRestorable(this);
const gl = this.context.gl;
gl.deleteBuffer(this.verticesBuffer);
gl.deleteBuffer(this.indicesBuffer);
}
}
export class VertexAttribute {
name;
type;
numElements;
constructor(name, type, numElements) {
this.name = name;
this.type = type;
this.numElements = numElements;
}
}
export class Position2Attribute extends VertexAttribute {
constructor() {
super(Shader.POSITION, VertexAttributeType.Float, 2);
}
}
export class Position3Attribute extends VertexAttribute {
constructor() {
super(Shader.POSITION, VertexAttributeType.Float, 3);
}
}
export class TexCoordAttribute extends VertexAttribute {
constructor(unit = 0) {
super(Shader.TEXCOORDS + (unit === 0 ? "" : unit), VertexAttributeType.Float, 2);
}
}
export class ColorAttribute extends VertexAttribute {
constructor() {
super(Shader.COLOR, VertexAttributeType.Float, 4);
}
}
export class Color2Attribute extends VertexAttribute {
constructor() {
super(Shader.COLOR2, VertexAttributeType.Float, 4);
}
}
export var VertexAttributeType;
(function (VertexAttributeType) {
VertexAttributeType[VertexAttributeType["Float"] = 0] = "Float";
})(VertexAttributeType || (VertexAttributeType = {}));
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* Spine Runtimes License Agreement\n * Last updated April 5, 2025. Replaces all prior versions.\n *\n * Copyright (c) 2013-2025, Esoteric Software LLC\n *\n * Integration of the Spine Runtimes into software or otherwise creating\n * derivative works of the Spine Runtimes is permitted under the terms and\n * conditions of Section 2 of the Spine Editor License Agreement:\n * http://esotericsoftware.com/spine-editor-license\n *\n * Otherwise, it is permitted to integrate the Spine Runtimes into software\n * or otherwise create derivative works of the Spine Runtimes (collectively,\n * \"Products\"), provided that each user of the Products must obtain their own\n * Spine Editor license and redistribution of the Products in any form must\n * include this license and copyright notice.\n *\n * THE SPINE RUNTIMES ARE PROVIDED BY ESOTERIC SOFTWARE LLC \"AS IS\" AND ANY\n * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED\n * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE\n * DISCLAIMED. IN NO EVENT SHALL ESOTERIC SOFTWARE LLC BE LIABLE FOR ANY\n * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES\n * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES,\n * BUSINESS INTERRUPTION, OR LOSS OF USE, DATA, OR PROFITS) HOWEVER CAUSED AND\n * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\n * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF\n * THE SPINE RUNTIMES, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n *****************************************************************************/\n\nimport type { Disposable, Restorable } from \"@esotericsoftware/spine-core\";\nimport { Shader } from \"./Shader.js\";\nimport { ManagedWebGLRenderingContext } from \"./WebGL.js\";\n\n\nexport class Mesh implements Disposable, Restorable {\n\tprivate context: ManagedWebGLRenderingContext;\n\tprivate vertices: Float32Array;\n\tprivate verticesBuffer: WebGLBuffer | null = null;\n\tprivate verticesLength = 0;\n\tprivate dirtyVertices = false;\n\tprivate indices: Uint16Array;\n\tprivate indicesBuffer: WebGLBuffer | null = null;\n\tprivate indicesLength = 0;\n\tprivate dirtyIndices = false;\n\tprivate elementsPerVertex = 0;\n\n\tgetAttributes (): VertexAttribute[] { return this.attributes; }\n\n\tmaxVertices (): number { return this.vertices.length / this.elementsPerVertex; }\n\tnumVertices (): number { return this.verticesLength / this.elementsPerVertex; }\n\tsetVerticesLength (length: number) {\n\t\tthis.dirtyVertices = true;\n\t\tthis.verticesLength = length;\n\t}\n\tgetVertices (): Float32Array { return this.vertices; }\n\n\tmaxIndices (): number { return this.indices.length; }\n\tnumIndices (): number { return this.indicesLength; }\n\tsetIndicesLength (length: number) {\n\t\tthis.dirtyIndices = true;\n\t\tthis.indicesLength = length;\n\t}\n\tgetIndices (): Uint16Array { return this.indices };\n\n\tgetVertexSizeInFloats (): number {\n\t\tlet size = 0;\n\t\tfor (let i = 0; i < this.attributes.length; i++) {\n\t\t\tconst attribute = this.attributes[i];\n\t\t\tsize += attribute.numElements;\n\t\t}\n\t\treturn size;\n\t}\n\n\tconstructor (context: ManagedWebGLRenderingContext | WebGLRenderingContext, private attributes: VertexAttribute[], maxVertices: number, maxIndices: number) {\n\t\tthis.context = context instanceof ManagedWebGLRenderingContext ? context : new ManagedWebGLRenderingContext(context);\n\t\tthis.elementsPerVertex = 0;\n\t\tfor (let i = 0; i < attributes.length; i++) {\n\t\t\tthis.elementsPerVertex += attributes[i].numElements;\n\t\t}\n\t\tthis.vertices = new Float32Array(maxVertices * this.elementsPerVertex);\n\t\tthis.indices = new Uint16Array(maxIndices);\n\t\tthis.context.addRestorable(this);\n\t}\n\n\tsetVertices (vertices: Array<number>) {\n\t\tthis.dirtyVertices = true;\n\t\tif (vertices.length > this.vertices.length) throw Error(`Mesh can't store more than ${this.maxVertices()} vertices`);\n\t\tthis.vertices.set(vertices, 0);\n\t\tthis.verticesLength = vertices.length;\n\t}\n\n\tsetIndices (indices: Array<number>) {\n\t\tthis.dirtyIndices = true;\n\t\tif (indices.length > this.indices.length) throw Error(`Mesh can't store more than ${this.maxIndices()} indices`);\n\t\tthis.indices.set(indices, 0);\n\t\tthis.indicesLength = indices.length;\n\t}\n\n\tdraw (shader: Shader, primitiveType: number) {\n\t\tthis.drawWithOffset(shader, primitiveType, 0, this.indicesLength > 0 ? this.indicesLength : this.verticesLength / this.elementsPerVertex);\n\t}\n\n\tdrawWithOffset (shader: Shader, primitiveType: number, offset: number, count: number) {\n\t\tconst gl = this.context.gl;\n\t\tif (this.dirtyVertices || this.dirtyIndices) this.update();\n\t\tthis.bind(shader);\n\t\tif (this.indicesLength > 0) {\n\t\t\tgl.drawElements(primitiveType, count, gl.UNSIGNED_SHORT, offset * 2);\n\t\t} else {\n\t\t\tgl.drawArrays(primitiveType, offset, count);\n\t\t}\n\t\tthis.unbind(shader);\n\t}\n\n\tbind (shader: Shader) {\n\t\tconst gl = this.context.gl;\n\t\tgl.bindBuffer(gl.ARRAY_BUFFER, this.verticesBuffer);\n\t\tlet offset = 0;\n\t\tfor (let i = 0; i < this.attributes.length; i++) {\n\t\t\tconst attrib = this.attributes[i];\n\t\t\tconst location = shader.getAttributeLocation(attrib.name);\n\t\t\tgl.enableVertexAttribArray(location);\n\t\t\tgl.vertexAttribPointer(location, attrib.numElements, gl.FLOAT, false, this.elementsPerVertex * 4, offset * 4);\n\t\t\toffset += attrib.numElements;\n\t\t}\n\t\tif (this.indicesLength > 0) gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, this.indicesBuffer);\n\t}\n\n\tunbind (shader: Shader) {\n\t\tconst gl = this.context.gl;\n\t\tfor (let i = 0; i < this.attributes.length; i++) {\n\t\t\tconst attrib = this.attributes[i];\n\t\t\tconst location = shader.getAttributeLocation(attrib.name);\n\t\t\tgl.disableVertexAttribArray(location);\n\t\t}\n\t\tgl.bindBuffer(gl.ARRAY_BUFFER, null);\n\t\tif (this.indicesLength > 0) gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, null);\n\t}\n\n\tprivate update () {\n\t\tconst gl = this.context.gl;\n\t\tif (this.dirtyVertices) {\n\t\t\tif (!this.verticesBuffer) {\n\t\t\t\tthis.verticesBuffer = gl.createBuffer();\n\t\t\t}\n\t\t\tgl.bindBuffer(gl.ARRAY_BUFFER, this.verticesBuffer);\n\t\t\tgl.bufferData(gl.ARRAY_BUFFER, this.vertices.subarray(0, this.verticesLength), gl.DYNAMIC_DRAW);\n\t\t\tthis.dirtyVertices = false;\n\t\t}\n\n\t\tif (this.dirtyIndices) {\n\t\t\tif (!this.indicesBuffer) {\n\t\t\t\tthis.indicesBuffer = gl.createBuffer();\n\t\t\t}\n\t\t\tgl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, this.indicesBuffer);\n\t\t\tgl.bufferData(gl.ELEMENT_ARRAY_BUFFER, this.indices.subarray(0, this.indicesLength), gl.DYNAMIC_DRAW);\n\t\t\tthis.dirtyIndices = false;\n\t\t}\n\t}\n\n\trestore () {\n\t\tthis.verticesBuffer = null;\n\t\tthis.indicesBuffer = null;\n\t\tthis.update();\n\t}\n\n\tdispose () {\n\t\tthis.context.removeRestorable(this);\n\t\tconst gl = this.context.gl;\n\t\tgl.deleteBuffer(this.verticesBuffer);\n\t\tgl.deleteBuffer(this.indicesBuffer);\n\t}\n}\n\nexport class VertexAttribute {\n\tconstructor (public name: string, public type: VertexAttributeType, public numElements: number) { }\n}\n\nexport class Position2Attribute extends VertexAttribute {\n\tconstructor () {\n\t\tsuper(Shader.POSITION, VertexAttributeType.Float, 2);\n\t}\n}\n\nexport class Position3Attribute extends VertexAttribute {\n\tconstructor () {\n\t\tsuper(Shader.POSITION, VertexAttributeType.Float, 3);\n\t}\n}\n\nexport class TexCoordAttribute extends VertexAttribute {\n\tconstructor (unit: number = 0) {\n\t\tsuper(Shader.TEXCOORDS + (unit === 0 ? \"\" : unit), VertexAttributeType.Float, 2);\n\t}\n}\n\nexport class ColorAttribute extends VertexAttribute {\n\tconstructor () {\n\t\tsuper(Shader.COLOR, VertexAttributeType.Float, 4);\n\t}\n}\n\nexport class Color2Attribute extends VertexAttribute {\n\tconstructor () {\n\t\tsuper(Shader.COLOR2, VertexAttributeType.Float, 4);\n\t}\n}\n\nexport enum VertexAttributeType {\n\tFloat\n}\n"]}