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@esotericsoftware/spine-webgl

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/****************************************************************************** * 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 { BlendMode, ClippingAttachment, Color, MeshAttachment, RegionAttachment, SkeletonClipping, Utils } from "@esotericsoftware/spine-core"; class Renderable { vertices; numVertices; numFloats; constructor(vertices, numVertices, numFloats) { this.vertices = vertices; this.numVertices = numVertices; this.numFloats = numFloats; } } ; export class SkeletonRenderer { static QUAD_TRIANGLES = [0, 1, 2, 2, 3, 0]; tempColor = new Color(); tempColor2 = new Color(); vertices; vertexSize = 2 + 2 + 4; twoColorTint = false; renderable = new Renderable([], 0, 0); clipper = new SkeletonClipping(); /** * Batches additive slots together with normal slots by rendering additive slots with premultiplied alpha RGB and zero alpha, * while using normal PMA blending. This reduces draw calls for normal/additive/normal sequences with the same texture. * Disable this if rendering to a transparent target and the accumulated destination alpha from additive blending must be preserved. */ pmaAdditiveBatching = true; constructor(context, twoColorTint = true) { this.twoColorTint = twoColorTint; if (twoColorTint) this.vertexSize += 4; this.vertices = Utils.newFloatArray(this.vertexSize * 1024); } draw(batcher, skeleton, slotRangeStart = -1, slotRangeEnd = -1, transformer = null) { const clipper = this.clipper; const twoColorTint = this.twoColorTint; let blendMode = null; const renderable = this.renderable; let uvs; let triangles; const drawOrder = skeleton.drawOrder.appliedPose; let attachmentColor; const skeletonColor = skeleton.color; const vertexSize = twoColorTint ? 12 : 8; let inRange = false; if (slotRangeStart === -1) inRange = true; for (let i = 0, n = drawOrder.length; i < n; i++) { const slot = drawOrder[i]; if (!slot.bone.active) { clipper.clipEnd(slot); continue; } if (slotRangeStart >= 0 && slotRangeStart === slot.data.index) { inRange = true; } if (!inRange) { clipper.clipEnd(slot); continue; } if (slotRangeEnd >= 0 && slotRangeEnd === slot.data.index) { inRange = false; } const pose = slot.appliedPose; const attachment = pose.attachment; let texture; if (attachment instanceof RegionAttachment) { renderable.vertices = this.vertices; renderable.numVertices = 4; renderable.numFloats = vertexSize << 2; const sequence = attachment.sequence; const sequenceIndex = sequence.resolveIndex(pose); attachment.computeWorldVertices(slot, attachment.getOffsets(pose), renderable.vertices, 0, vertexSize); triangles = SkeletonRenderer.QUAD_TRIANGLES; uvs = sequence.getUVs(sequenceIndex); texture = sequence.regions[sequenceIndex]?.texture; attachmentColor = attachment.color; } else if (attachment instanceof MeshAttachment) { renderable.vertices = this.vertices; renderable.numVertices = (attachment.worldVerticesLength >> 1); renderable.numFloats = renderable.numVertices * vertexSize; if (renderable.numFloats > renderable.vertices.length) { renderable.vertices = this.vertices = Utils.newFloatArray(renderable.numFloats); } attachment.computeWorldVertices(skeleton, slot, 0, attachment.worldVerticesLength, renderable.vertices, 0, vertexSize); triangles = attachment.triangles; const sequence = attachment.sequence; const sequenceIndex = sequence.resolveIndex(pose); texture = sequence.regions[sequenceIndex]?.texture; uvs = sequence.getUVs(sequenceIndex); attachmentColor = attachment.color; } else if (attachment instanceof ClippingAttachment) { clipper.clipEnd(slot); clipper.clipStart(skeleton, slot, attachment); continue; } else { clipper.clipEnd(slot); continue; } if (texture) { const slotColor = pose.color; const finalColor = this.tempColor; const alpha = skeletonColor.a * slotColor.a * attachmentColor.a; finalColor.r = skeletonColor.r * slotColor.r * attachmentColor.r * alpha; finalColor.g = skeletonColor.g * slotColor.g * attachmentColor.g * alpha; finalColor.b = skeletonColor.b * slotColor.b * attachmentColor.b * alpha; const slotBlendMode = slot.data.blendMode; const additiveBlend = this.pmaAdditiveBatching && slotBlendMode === BlendMode.Additive; finalColor.a = additiveBlend ? 0 : alpha; const darkColor = this.tempColor2; if (!pose.darkColor) darkColor.set(0, 0, 0, 1.0); else { darkColor.r = pose.darkColor.r * alpha; darkColor.g = pose.darkColor.g * alpha; darkColor.b = pose.darkColor.b * alpha; darkColor.a = 1; } const batchBlendMode = additiveBlend ? BlendMode.Normal : slotBlendMode; if (batchBlendMode !== blendMode) { blendMode = batchBlendMode; batcher.setBlendMode(blendMode); } if (clipper.isClipping() && clipper.clipTriangles(renderable.vertices, triangles, triangles.length, uvs, finalColor, darkColor, twoColorTint, vertexSize)) { const clippedVertices = new Float32Array(clipper.clippedVertices); const clippedTriangles = clipper.clippedTriangles; if (transformer) transformer(clippedVertices, clippedVertices.length, vertexSize); batcher.draw(texture, clippedVertices, clippedTriangles); } else { const verts = renderable.vertices; if (!twoColorTint) { for (let v = 2, u = 0, n = renderable.numFloats; v < n; v += vertexSize, u += 2) { verts[v] = finalColor.r; verts[v + 1] = finalColor.g; verts[v + 2] = finalColor.b; verts[v + 3] = finalColor.a; verts[v + 4] = uvs[u]; verts[v + 5] = uvs[u + 1]; } } else { for (let v = 2, u = 0, n = renderable.numFloats; v < n; v += vertexSize, u += 2) { verts[v] = finalColor.r; verts[v + 1] = finalColor.g; verts[v + 2] = finalColor.b; verts[v + 3] = finalColor.a; verts[v + 4] = uvs[u]; verts[v + 5] = uvs[u + 1]; verts[v + 6] = darkColor.r; verts[v + 7] = darkColor.g; verts[v + 8] = darkColor.b; verts[v + 9] = darkColor.a; } } const view = renderable.vertices.subarray(0, renderable.numFloats); if (transformer) transformer(renderable.vertices, renderable.numFloats, vertexSize); batcher.draw(texture, view, triangles); } } clipper.clipEnd(slot); } clipper.clipEnd(); } /** Returns the {@link SkeletonClipping} used by this renderer for use with e.g. {@link Skeleton.getBounds} **/ getSkeletonClipping() { return this.clipper; } } //# 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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 { BlendMode, ClippingAttachment, Color, MeshAttachment, type NumberArrayLike, RegionAttachment, type Skeleton, SkeletonClipping, Utils, Vector2 } from \"@esotericsoftware/spine-core\";\nimport type { GLTexture } from \"./GLTexture.js\";\nimport type { PolygonBatcher } from \"./PolygonBatcher.js\";\nimport type { ManagedWebGLRenderingContext } from \"./WebGL.js\";\n\n\nclass Renderable {\n\tconstructor (public vertices: NumberArrayLike, public numVertices: number, public numFloats: number) { }\n};\n\nexport type VertexTransformer = (vertices: NumberArrayLike, numVertices: number, stride: number) => void;\n\nexport class SkeletonRenderer {\n\tstatic QUAD_TRIANGLES = [0, 1, 2, 2, 3, 0];\n\n\tprivate tempColor = new Color();\n\tprivate tempColor2 = new Color();\n\tprivate vertices: NumberArrayLike;\n\tprivate vertexSize = 2 + 2 + 4;\n\tprivate twoColorTint = false;\n\tprivate renderable: Renderable = new Renderable([], 0, 0);\n\tprivate clipper: SkeletonClipping = new SkeletonClipping();\n\n\t/**\n\t * Batches additive slots together with normal slots by rendering additive slots with premultiplied alpha RGB and zero alpha,\n\t * while using normal PMA blending. This reduces draw calls for normal/additive/normal sequences with the same texture.\n\t * Disable this if rendering to a transparent target and the accumulated destination alpha from additive blending must be preserved.\n\t */\n\tpmaAdditiveBatching = true;\n\n\tconstructor (context: ManagedWebGLRenderingContext, twoColorTint: boolean = true) {\n\t\tthis.twoColorTint = twoColorTint;\n\t\tif (twoColorTint)\n\t\t\tthis.vertexSize += 4;\n\t\tthis.vertices = Utils.newFloatArray(this.vertexSize * 1024);\n\t}\n\n\tdraw (batcher: PolygonBatcher, skeleton: Skeleton, slotRangeStart: number = -1, slotRangeEnd: number = -1, transformer: VertexTransformer | null = null) {\n\t\tconst clipper = this.clipper;\n\t\tconst twoColorTint = this.twoColorTint;\n\t\tlet blendMode: BlendMode | null = null;\n\n\t\tconst renderable: Renderable = this.renderable;\n\t\tlet uvs: NumberArrayLike;\n\t\tlet triangles: Array<number>;\n\t\tconst drawOrder = skeleton.drawOrder.appliedPose;\n\t\tlet attachmentColor: Color;\n\t\tconst skeletonColor = skeleton.color;\n\t\tconst vertexSize = twoColorTint ? 12 : 8;\n\t\tlet inRange = false;\n\t\tif (slotRangeStart === -1) inRange = true;\n\t\tfor (let i = 0, n = drawOrder.length; i < n; i++) {\n\t\t\tconst slot = drawOrder[i];\n\t\t\tif (!slot.bone.active) {\n\t\t\t\tclipper.clipEnd(slot);\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\tif (slotRangeStart >= 0 && slotRangeStart === slot.data.index) {\n\t\t\t\tinRange = true;\n\t\t\t}\n\n\t\t\tif (!inRange) {\n\t\t\t\tclipper.clipEnd(slot);\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\tif (slotRangeEnd >= 0 && slotRangeEnd === slot.data.index) {\n\t\t\t\tinRange = false;\n\t\t\t}\n\n\t\t\tconst pose = slot.appliedPose;\n\t\t\tconst attachment = pose.attachment;\n\t\t\tlet texture: GLTexture;\n\t\t\tif (attachment instanceof RegionAttachment) {\n\t\t\t\trenderable.vertices = this.vertices;\n\t\t\t\trenderable.numVertices = 4;\n\t\t\t\trenderable.numFloats = vertexSize << 2;\n\n\t\t\t\tconst sequence = attachment.sequence;\n\t\t\t\tconst sequenceIndex = sequence.resolveIndex(pose);\n\t\t\t\tattachment.computeWorldVertices(slot, attachment.getOffsets(pose), renderable.vertices, 0, vertexSize);\n\n\t\t\t\ttriangles = SkeletonRenderer.QUAD_TRIANGLES;\n\t\t\t\tuvs = sequence.getUVs(sequenceIndex);\n\t\t\t\ttexture = sequence.regions[sequenceIndex]?.texture as GLTexture;\n\t\t\t\tattachmentColor = attachment.color;\n\t\t\t} else if (attachment instanceof MeshAttachment) {\n\t\t\t\trenderable.vertices = this.vertices;\n\t\t\t\trenderable.numVertices = (attachment.worldVerticesLength >> 1);\n\t\t\t\trenderable.numFloats = renderable.numVertices * vertexSize;\n\n\t\t\t\tif (renderable.numFloats > renderable.vertices.length) {\n\t\t\t\t\trenderable.vertices = this.vertices = Utils.newFloatArray(renderable.numFloats);\n\t\t\t\t}\n\t\t\t\tattachment.computeWorldVertices(skeleton, slot, 0, attachment.worldVerticesLength, renderable.vertices, 0, vertexSize);\n\t\t\t\ttriangles = attachment.triangles;\n\n\t\t\t\tconst sequence = attachment.sequence;\n\t\t\t\tconst sequenceIndex = sequence.resolveIndex(pose);\n\n\t\t\t\ttexture = sequence.regions[sequenceIndex]?.texture as GLTexture;\n\t\t\t\tuvs = sequence.getUVs(sequenceIndex);\n\t\t\t\tattachmentColor = attachment.color;\n\t\t\t} else if (attachment instanceof ClippingAttachment) {\n\t\t\t\tclipper.clipEnd(slot);\n\t\t\t\tclipper.clipStart(skeleton, slot, attachment);\n\t\t\t\tcontinue;\n\t\t\t} else {\n\t\t\t\tclipper.clipEnd(slot);\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\tif (texture) {\n\t\t\t\tconst slotColor = pose.color;\n\t\t\t\tconst finalColor = this.tempColor;\n\t\t\t\tconst alpha = skeletonColor.a * slotColor.a * attachmentColor.a;\n\t\t\t\tfinalColor.r = skeletonColor.r * slotColor.r * attachmentColor.r * alpha;\n\t\t\t\tfinalColor.g = skeletonColor.g * slotColor.g * attachmentColor.g * alpha;\n\t\t\t\tfinalColor.b = skeletonColor.b * slotColor.b * attachmentColor.b * alpha;\n\n\t\t\t\tconst slotBlendMode = slot.data.blendMode;\n\t\t\t\tconst additiveBlend = this.pmaAdditiveBatching && slotBlendMode === BlendMode.Additive;\n\t\t\t\tfinalColor.a = additiveBlend ? 0 : alpha;\n\n\t\t\t\tconst darkColor = this.tempColor2;\n\t\t\t\tif (!pose.darkColor)\n\t\t\t\t\tdarkColor.set(0, 0, 0, 1.0);\n\t\t\t\telse {\n\t\t\t\t\tdarkColor.r = pose.darkColor.r * alpha;\n\t\t\t\t\tdarkColor.g = pose.darkColor.g * alpha;\n\t\t\t\t\tdarkColor.b = pose.darkColor.b * alpha;\n\t\t\t\t\tdarkColor.a = 1;\n\t\t\t\t}\n\n\t\t\t\tconst batchBlendMode = additiveBlend ? BlendMode.Normal : slotBlendMode;\n\t\t\t\tif (batchBlendMode !== blendMode) {\n\t\t\t\t\tblendMode = batchBlendMode;\n\t\t\t\t\tbatcher.setBlendMode(blendMode);\n\t\t\t\t}\n\n\t\t\t\tif (clipper.isClipping() && clipper.clipTriangles(renderable.vertices, triangles, triangles.length, uvs, finalColor, darkColor, twoColorTint, vertexSize)) {\n\t\t\t\t\tconst clippedVertices = new Float32Array(clipper.clippedVertices);\n\t\t\t\t\tconst clippedTriangles = clipper.clippedTriangles;\n\t\t\t\t\tif (transformer) transformer(clippedVertices, clippedVertices.length, vertexSize);\n\t\t\t\t\tbatcher.draw(texture, clippedVertices, clippedTriangles);\n\t\t\t\t} else {\n\t\t\t\t\tconst verts = renderable.vertices;\n\t\t\t\t\tif (!twoColorTint) {\n\t\t\t\t\t\tfor (let v = 2, u = 0, n = renderable.numFloats; v < n; v += vertexSize, u += 2) {\n\t\t\t\t\t\t\tverts[v] = finalColor.r;\n\t\t\t\t\t\t\tverts[v + 1] = finalColor.g;\n\t\t\t\t\t\t\tverts[v + 2] = finalColor.b;\n\t\t\t\t\t\t\tverts[v + 3] = finalColor.a;\n\t\t\t\t\t\t\tverts[v + 4] = uvs[u];\n\t\t\t\t\t\t\tverts[v + 5] = uvs[u + 1];\n\t\t\t\t\t\t}\n\t\t\t\t\t} else {\n\t\t\t\t\t\tfor (let v = 2, u = 0, n = renderable.numFloats; v < n; v += vertexSize, u += 2) {\n\t\t\t\t\t\t\tverts[v] = finalColor.r;\n\t\t\t\t\t\t\tverts[v + 1] = finalColor.g;\n\t\t\t\t\t\t\tverts[v + 2] = finalColor.b;\n\t\t\t\t\t\t\tverts[v + 3] = finalColor.a;\n\t\t\t\t\t\t\tverts[v + 4] = uvs[u];\n\t\t\t\t\t\t\tverts[v + 5] = uvs[u + 1];\n\t\t\t\t\t\t\tverts[v + 6] = darkColor.r;\n\t\t\t\t\t\t\tverts[v + 7] = darkColor.g;\n\t\t\t\t\t\t\tverts[v + 8] = darkColor.b;\n\t\t\t\t\t\t\tverts[v + 9] = darkColor.a;\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t\tconst view = (renderable.vertices as Float32Array).subarray(0, renderable.numFloats);\n\t\t\t\t\tif (transformer) transformer(renderable.vertices, renderable.numFloats, vertexSize);\n\t\t\t\t\tbatcher.draw(texture, view, triangles);\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tclipper.clipEnd(slot);\n\t\t}\n\t\tclipper.clipEnd();\n\t}\n\n\t/** Returns the {@link SkeletonClipping} used by this renderer for use with e.g. {@link Skeleton.getBounds} **/\n\tpublic getSkeletonClipping (): SkeletonClipping {\n\t\treturn this.clipper;\n\t}\n}\n"]}