@esotericsoftware/spine-webgl
Version:
The official Spine Runtimes for the web.
117 lines • 17.1 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 { Texture, TextureFilter } from "@esotericsoftware/spine-core";
import { ManagedWebGLRenderingContext } from "./WebGL.js";
export class GLTexture extends Texture {
context;
texture = null;
boundUnit = 0;
useMipMaps = false;
static DISABLE_UNPACK_PREMULTIPLIED_ALPHA_WEBGL = false;
constructor(context, image, useMipMaps = false) {
super(image);
this.context = context instanceof ManagedWebGLRenderingContext ? context : new ManagedWebGLRenderingContext(context);
this.useMipMaps = useMipMaps;
this.restore();
this.context.addRestorable(this);
}
setFilters(minFilter, magFilter) {
let gl = this.context.gl;
this.bind();
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, minFilter);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, GLTexture.validateMagFilter(magFilter));
this.useMipMaps = GLTexture.usesMipMaps(minFilter);
if (this.useMipMaps)
gl.generateMipmap(gl.TEXTURE_2D);
}
static validateMagFilter(magFilter) {
switch (magFilter) {
case TextureFilter.MipMapLinearLinear:
case TextureFilter.MipMapLinearNearest:
case TextureFilter.MipMapNearestLinear:
case TextureFilter.MipMapNearestNearest:
return TextureFilter.Linear;
default:
return magFilter;
}
}
static usesMipMaps(filter) {
switch (filter) {
case TextureFilter.MipMapLinearLinear:
case TextureFilter.MipMapLinearNearest:
case TextureFilter.MipMapNearestLinear:
case TextureFilter.MipMapNearestNearest:
return true;
default:
return false;
}
}
setWraps(uWrap, vWrap) {
let gl = this.context.gl;
this.bind();
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, uWrap);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, vWrap);
}
update(useMipMaps) {
let gl = this.context.gl;
if (!this.texture)
this.texture = this.context.gl.createTexture();
this.bind();
if (GLTexture.DISABLE_UNPACK_PREMULTIPLIED_ALPHA_WEBGL)
gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, false);
gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, this._image);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, useMipMaps ? gl.LINEAR_MIPMAP_LINEAR : gl.LINEAR);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
if (useMipMaps)
gl.generateMipmap(gl.TEXTURE_2D);
}
restore() {
this.texture = null;
this.update(this.useMipMaps);
}
bind(unit = 0) {
let gl = this.context.gl;
this.boundUnit = unit;
gl.activeTexture(gl.TEXTURE0 + unit);
gl.bindTexture(gl.TEXTURE_2D, this.texture);
}
unbind() {
let gl = this.context.gl;
gl.activeTexture(gl.TEXTURE0 + this.boundUnit);
gl.bindTexture(gl.TEXTURE_2D, null);
}
dispose() {
this.context.removeRestorable(this);
let gl = this.context.gl;
gl.deleteTexture(this.texture);
}
}
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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 { Texture, Disposable, Restorable, TextureFilter, TextureWrap } from \"@esotericsoftware/spine-core\";\nimport { ManagedWebGLRenderingContext } from \"./WebGL.js\";\n\nexport class GLTexture extends Texture implements Disposable, Restorable {\n\tcontext: ManagedWebGLRenderingContext;\n\tprivate texture: WebGLTexture | null = null;\n\tprivate boundUnit = 0;\n\tprivate useMipMaps = false;\n\n\tpublic static DISABLE_UNPACK_PREMULTIPLIED_ALPHA_WEBGL = false;\n\n\tconstructor (context: ManagedWebGLRenderingContext | WebGLRenderingContext, image: HTMLImageElement | ImageBitmap, useMipMaps: boolean = false) {\n\t\tsuper(image);\n\t\tthis.context = context instanceof ManagedWebGLRenderingContext ? context : new ManagedWebGLRenderingContext(context);\n\t\tthis.useMipMaps = useMipMaps;\n\t\tthis.restore();\n\t\tthis.context.addRestorable(this);\n\t}\n\n\tsetFilters (minFilter: TextureFilter, magFilter: TextureFilter) {\n\t\tlet gl = this.context.gl;\n\t\tthis.bind();\n\t\tgl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, minFilter);\n\t\tgl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, GLTexture.validateMagFilter(magFilter));\n\t\tthis.useMipMaps = GLTexture.usesMipMaps(minFilter);\n\t\tif (this.useMipMaps) gl.generateMipmap(gl.TEXTURE_2D);\n\t}\n\n\tstatic validateMagFilter (magFilter: TextureFilter) {\n\t\tswitch (magFilter) {\n\t\t\tcase TextureFilter.MipMapLinearLinear:\n\t\t\tcase TextureFilter.MipMapLinearNearest:\n\t\t\tcase TextureFilter.MipMapNearestLinear:\n\t\t\tcase TextureFilter.MipMapNearestNearest:\n\t\t\t\treturn TextureFilter.Linear;\n\t\t\tdefault:\n\t\t\t\treturn magFilter;\n\t\t}\n\t}\n\n\tstatic usesMipMaps (filter: TextureFilter) {\n\t\tswitch (filter) {\n\t\t\tcase TextureFilter.MipMapLinearLinear:\n\t\t\tcase TextureFilter.MipMapLinearNearest:\n\t\t\tcase TextureFilter.MipMapNearestLinear:\n\t\t\tcase TextureFilter.MipMapNearestNearest:\n\t\t\t\treturn true;\n\t\t\tdefault:\n\t\t\t\treturn false;\n\t\t}\n\t}\n\n\tsetWraps (uWrap: TextureWrap, vWrap: TextureWrap) {\n\t\tlet gl = this.context.gl;\n\t\tthis.bind();\n\t\tgl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, uWrap);\n\t\tgl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, vWrap);\n\t}\n\n\tupdate (useMipMaps: boolean) {\n\t\tlet gl = this.context.gl;\n\t\tif (!this.texture) this.texture = this.context.gl.createTexture();\n\t\tthis.bind();\n\t\tif (GLTexture.DISABLE_UNPACK_PREMULTIPLIED_ALPHA_WEBGL) gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, false);\n\t\tgl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, this._image);\n\t\tgl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);\n\t\tgl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, useMipMaps ? gl.LINEAR_MIPMAP_LINEAR : gl.LINEAR);\n\t\tgl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);\n\t\tgl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);\n\t\tif (useMipMaps) gl.generateMipmap(gl.TEXTURE_2D);\n\t}\n\n\trestore () {\n\t\tthis.texture = null;\n\t\tthis.update(this.useMipMaps);\n\t}\n\n\tbind (unit: number = 0) {\n\t\tlet gl = this.context.gl;\n\t\tthis.boundUnit = unit;\n\t\tgl.activeTexture(gl.TEXTURE0 + unit);\n\t\tgl.bindTexture(gl.TEXTURE_2D, this.texture);\n\t}\n\n\tunbind () {\n\t\tlet gl = this.context.gl;\n\t\tgl.activeTexture(gl.TEXTURE0 + this.boundUnit);\n\t\tgl.bindTexture(gl.TEXTURE_2D, null);\n\t}\n\n\tdispose () {\n\t\tthis.context.removeRestorable(this);\n\t\tlet gl = this.context.gl;\n\t\tgl.deleteTexture(this.texture);\n\t}\n}\n"]}