{"ast":null,"code":"import { InternalTexture } from \"../../../Materials/Textures/internalTexture.js\";\nimport { Logger } from \"../../../Misc/logger.js\";\nimport { WebGPUEngine } from \"../../webgpuEngine.js\";\nWebGPUEngine.prototype.unBindMultiColorAttachmentFramebuffer = function (rtWrapper, disableGenerateMipMaps = false, onBeforeUnbind) {\n  if (onBeforeUnbind) {\n    onBeforeUnbind();\n  }\n  this._endCurrentRenderPass();\n  if (!disableGenerateMipMaps) {\n    this.generateMipMapsMultiFramebuffer(rtWrapper);\n  }\n  this._currentRenderTarget = null;\n  this._mrtAttachments = [];\n  this._cacheRenderPipeline.setMRT([]);\n  this._cacheRenderPipeline.setMRTAttachments(this._mrtAttachments);\n};\nWebGPUEngine.prototype.createMultipleRenderTarget = function (size, options, initializeBuffers) {\n  var _size$width, _size$height, _options$label;\n  let generateMipMaps = false;\n  let generateDepthBuffer = true;\n  let generateStencilBuffer = false;\n  let generateDepthTexture = false;\n  let depthTextureFormat = 15;\n  let textureCount = 1;\n  let samples = 1;\n  const defaultType = 0;\n  const defaultSamplingMode = 3;\n  const defaultUseSRGBBuffer = false;\n  const defaultFormat = 5;\n  const defaultTarget = 3553;\n  let types = [];\n  let samplingModes = [];\n  let useSRGBBuffers = [];\n  let formats = [];\n  let targets = [];\n  let faceIndex = [];\n  let layerIndex = [];\n  let layers = [];\n  let labels = [];\n  let creationFlags = [];\n  let dontCreateTextures = false;\n  const rtWrapper = this._createHardwareRenderTargetWrapper(true, false, size);\n  if (options !== undefined) {\n    var _options$generateMipM, _options$generateDept, _options$generateSten, _options$generateDept2, _options$textureCount, _options$depthTexture, _options$samples, _options$dontCreateTe;\n    generateMipMaps = (_options$generateMipM = options.generateMipMaps) !== null && _options$generateMipM !== void 0 ? _options$generateMipM : false;\n    generateDepthBuffer = (_options$generateDept = options.generateDepthBuffer) !== null && _options$generateDept !== void 0 ? _options$generateDept : true;\n    generateStencilBuffer = (_options$generateSten = options.generateStencilBuffer) !== null && _options$generateSten !== void 0 ? _options$generateSten : false;\n    generateDepthTexture = (_options$generateDept2 = options.generateDepthTexture) !== null && _options$generateDept2 !== void 0 ? _options$generateDept2 : false;\n    textureCount = (_options$textureCount = options.textureCount) !== null && _options$textureCount !== void 0 ? _options$textureCount : 1;\n    depthTextureFormat = (_options$depthTexture = options.depthTextureFormat) !== null && _options$depthTexture !== void 0 ? _options$depthTexture : 15;\n    types = options.types || types;\n    samplingModes = options.samplingModes || samplingModes;\n    useSRGBBuffers = options.useSRGBBuffers || useSRGBBuffers;\n    formats = options.formats || formats;\n    targets = options.targetTypes || targets;\n    faceIndex = options.faceIndex || faceIndex;\n    layerIndex = options.layerIndex || layerIndex;\n    layers = options.layerCounts || layers;\n    labels = options.labels || labels;\n    creationFlags = options.creationFlags || creationFlags;\n    samples = (_options$samples = options.samples) !== null && _options$samples !== void 0 ? _options$samples : samples;\n    dontCreateTextures = (_options$dontCreateTe = options.dontCreateTextures) !== null && _options$dontCreateTe !== void 0 ? _options$dontCreateTe : false;\n  }\n  const width = (_size$width = size.width) !== null && _size$width !== void 0 ? _size$width : size;\n  const height = (_size$height = size.height) !== null && _size$height !== void 0 ? _size$height : size;\n  const textures = [];\n  const attachments = [];\n  const defaultAttachments = [];\n  rtWrapper.label = (_options$label = options === null || options === void 0 ? void 0 : options.label) !== null && _options$label !== void 0 ? _options$label : \"MultiRenderTargetWrapper\";\n  rtWrapper._generateDepthBuffer = generateDepthBuffer;\n  rtWrapper._generateStencilBuffer = generateStencilBuffer;\n  rtWrapper._attachments = attachments;\n  rtWrapper._defaultAttachments = defaultAttachments;\n  let depthStencilTexture = null;\n  if ((generateDepthBuffer || generateStencilBuffer || generateDepthTexture) && !dontCreateTextures) {\n    if (!generateDepthTexture) {\n      // The caller doesn't want a depth texture, so we are free to use the depth texture format we want.\n      // So, we will align with what the WebGL engine does\n      if (generateDepthBuffer && generateStencilBuffer) {\n        depthTextureFormat = 13;\n      } else if (generateDepthBuffer) {\n        depthTextureFormat = 14;\n      } else {\n        depthTextureFormat = 19;\n      }\n    }\n    depthStencilTexture = rtWrapper.createDepthStencilTexture(0, false, generateStencilBuffer, 1, depthTextureFormat, rtWrapper.label + \"-DepthStencil\");\n  }\n  const mipmapsCreationOnly = options !== undefined && typeof options === \"object\" && options.createMipMaps && !generateMipMaps;\n  for (let i = 0; i < textureCount; i++) {\n    var _layers$i, _labels$i;\n    let samplingMode = samplingModes[i] || defaultSamplingMode;\n    let type = types[i] || defaultType;\n    const format = formats[i] || defaultFormat;\n    const useSRGBBuffer = (useSRGBBuffers[i] || defaultUseSRGBBuffer) && this._caps.supportSRGBBuffers;\n    const target = targets[i] || defaultTarget;\n    const layerCount = (_layers$i = layers[i]) !== null && _layers$i !== void 0 ? _layers$i : 1;\n    const creationFlag = creationFlags[i];\n    if (type === 1 && !this._caps.textureFloatLinearFiltering) {\n      // if floating point linear (FLOAT) then force to NEAREST_SAMPLINGMODE\n      samplingMode = 1;\n    } else if (type === 2 && !this._caps.textureHalfFloatLinearFiltering) {\n      // if floating point linear (HALF_FLOAT) then force to NEAREST_SAMPLINGMODE\n      samplingMode = 1;\n    }\n    if (type === 1 && !this._caps.textureFloat) {\n      type = 0;\n      Logger.Warn(\"Float textures are not supported. Render target forced to TEXTURETYPE_UNSIGNED_BYTE type\");\n    }\n    attachments.push(i + 1);\n    defaultAttachments.push(initializeBuffers ? i + 1 : i === 0 ? 1 : 0);\n    if (target === -1 || dontCreateTextures) {\n      continue;\n    }\n    const texture = new InternalTexture(this, 6 /* InternalTextureSource.MultiRenderTarget */);\n    textures[i] = texture;\n    switch (target) {\n      case 34067:\n        texture.isCube = true;\n        break;\n      case 32879:\n        texture.is3D = true;\n        texture.baseDepth = texture.depth = layerCount;\n        break;\n      case 35866:\n        texture.is2DArray = true;\n        texture.baseDepth = texture.depth = layerCount;\n        break;\n    }\n    texture.baseWidth = width;\n    texture.baseHeight = height;\n    texture.width = width;\n    texture.height = height;\n    texture.isReady = true;\n    texture.samples = 1;\n    texture.generateMipMaps = generateMipMaps;\n    texture.samplingMode = samplingMode;\n    texture.type = type;\n    texture._cachedWrapU = 0;\n    texture._cachedWrapV = 0;\n    texture._useSRGBBuffer = useSRGBBuffer;\n    texture.format = format;\n    texture.label = (_labels$i = labels[i]) !== null && _labels$i !== void 0 ? _labels$i : rtWrapper.label + \"-Texture\" + i;\n    this._internalTexturesCache.push(texture);\n    if (mipmapsCreationOnly) {\n      // createGPUTextureForInternalTexture will only create a texture with mipmaps if generateMipMaps is true, as InternalTexture has no createMipMaps property, separate from generateMipMaps.\n      texture.generateMipMaps = true;\n    }\n    this._textureHelper.createGPUTextureForInternalTexture(texture, undefined, undefined, undefined, creationFlag, true);\n    if (mipmapsCreationOnly) {\n      texture.generateMipMaps = false;\n    }\n  }\n  if (depthStencilTexture) {\n    depthStencilTexture.incrementReferences();\n    textures[textureCount] = depthStencilTexture;\n    this._internalTexturesCache.push(depthStencilTexture);\n  }\n  rtWrapper.setTextures(textures);\n  rtWrapper.setLayerAndFaceIndices(layerIndex, faceIndex);\n  if (!dontCreateTextures) {\n    this.updateMultipleRenderTargetTextureSampleCount(rtWrapper, samples);\n  } else {\n    rtWrapper._samples = samples;\n  }\n  return rtWrapper;\n};\nWebGPUEngine.prototype.updateMultipleRenderTargetTextureSampleCount = function (rtWrapper, samples) {\n  if (!rtWrapper || !rtWrapper.textures || rtWrapper.textures.length === 0 || rtWrapper.textures[0].samples === samples) {\n    return samples;\n  }\n  const count = rtWrapper.textures.length;\n  if (count === 0) {\n    return 1;\n  }\n  samples = Math.min(samples, this.getCaps().maxMSAASamples);\n  for (let i = 0; i < count; ++i) {\n    const texture = rtWrapper.textures[i];\n    const gpuTextureWrapper = texture._hardwareTexture;\n    gpuTextureWrapper === null || gpuTextureWrapper === void 0 || gpuTextureWrapper.releaseMSAATexture(rtWrapper.getBaseArrayLayer(i));\n  }\n  // Note that rtWrapper.textures can't have null textures, lastTextureIsDepthTexture can't be true if rtWrapper._depthStencilTexture is null\n  const lastTextureIsDepthTexture = rtWrapper._depthStencilTexture === rtWrapper.textures[count - 1];\n  for (let i = 0; i < count; ++i) {\n    const texture = rtWrapper.textures[i];\n    this._textureHelper.createMSAATexture(texture, samples, false, rtWrapper.getBaseArrayLayer(i));\n    texture.samples = samples;\n  }\n  // Note that the last texture of textures is the depth texture if the depth texture has been generated by the MRT class and so the MSAA texture\n  // will be recreated for this texture by the loop above: in that case, there's no need to create the MSAA texture for rtWrapper._depthStencilTexture\n  // because rtWrapper._depthStencilTexture is the same texture than the depth texture\n  if (rtWrapper._depthStencilTexture && !lastTextureIsDepthTexture) {\n    this._textureHelper.createMSAATexture(rtWrapper._depthStencilTexture, samples);\n    rtWrapper._depthStencilTexture.samples = samples;\n  }\n  rtWrapper._samples = samples;\n  return samples;\n};\nWebGPUEngine.prototype.generateMipMapsMultiFramebuffer = function (texture) {\n  const rtWrapper = texture;\n  if (!rtWrapper.isMulti) {\n    return;\n  }\n  const attachments = rtWrapper._attachments;\n  const count = attachments.length;\n  for (let i = 0; i < count; i++) {\n    const texture = rtWrapper.textures[i];\n    if (texture.generateMipMaps && !texture.isCube && !texture.is3D) {\n      this._generateMipmaps(texture);\n    }\n  }\n};\nWebGPUEngine.prototype.resolveMultiFramebuffer = function (_texture) {\n  throw new Error(\"resolveMultiFramebuffer is not yet implemented in WebGPU!\");\n};\nWebGPUEngine.prototype.bindAttachments = function (attachments) {\n  if (attachments.length === 0 || !this._currentRenderTarget) {\n    return;\n  }\n  this._mrtAttachments = attachments;\n  if (this._currentRenderPass) {\n    // the render pass has already been created, we need to call setMRTAttachments to update the state of the attachments\n    this._cacheRenderPipeline.setMRTAttachments(attachments);\n  } else {\n    // the render pass is not created yet so we don't need to call setMRTAttachments: it will be called as part of the render pass creation (see WebGPUEngine._startRenderTargetRenderPass)\n  }\n};\nWebGPUEngine.prototype.buildTextureLayout = function (textureStatus) {\n  const result = [];\n  for (let i = 0; i < textureStatus.length; i++) {\n    if (textureStatus[i]) {\n      result.push(i + 1);\n    } else {\n      result.push(0);\n    }\n  }\n  return result;\n};\nWebGPUEngine.prototype.restoreSingleAttachment = function () {\n  // not sure what to do, probably nothing... This function and restoreSingleAttachmentForRenderTarget are not called in Babylon.js so it's hard to know the use case\n};\nWebGPUEngine.prototype.restoreSingleAttachmentForRenderTarget = function () {\n  // not sure what to do, probably nothing... This function and restoreSingleAttachment are not called in Babylon.js so it's hard to know the use case\n};","map":{"version":3,"names":["InternalTexture","Logger","WebGPUEngine","prototype","unBindMultiColorAttachmentFramebuffer","rtWrapper","disableGenerateMipMaps","onBeforeUnbind","_endCurrentRenderPass","generateMipMapsMultiFramebuffer","_currentRenderTarget","_mrtAttachments","_cacheRenderPipeline","setMRT","setMRTAttachments","createMultipleRenderTarget","size","options","initializeBuffers","_size$width","_size$height","_options$label","generateMipMaps","generateDepthBuffer","generateStencilBuffer","generateDepthTexture","depthTextureFormat","textureCount","samples","defaultType","defaultSamplingMode","defaultUseSRGBBuffer","defaultFormat","defaultTarget","types","samplingModes","useSRGBBuffers","formats","targets","faceIndex","layerIndex","layers","labels","creationFlags","dontCreateTextures","_createHardwareRenderTargetWrapper","undefined","_options$generateMipM","_options$generateDept","_options$generateSten","_options$generateDept2","_options$textureCount","_options$depthTexture","_options$samples","_options$dontCreateTe","targetTypes","layerCounts","width","height","textures","attachments","defaultAttachments","label","_generateDepthBuffer","_generateStencilBuffer","_attachments","_defaultAttachments","depthStencilTexture","createDepthStencilTexture","mipmapsCreationOnly","createMipMaps","i","_layers$i","_labels$i","samplingMode","type","format","useSRGBBuffer","_caps","supportSRGBBuffers","target","layerCount","creationFlag","textureFloatLinearFiltering","textureHalfFloatLinearFiltering","textureFloat","Warn","push","texture","isCube","is3D","baseDepth","depth","is2DArray","baseWidth","baseHeight","isReady","_cachedWrapU","_cachedWrapV","_useSRGBBuffer","_internalTexturesCache","_textureHelper","createGPUTextureForInternalTexture","incrementReferences","setTextures","setLayerAndFaceIndices","updateMultipleRenderTargetTextureSampleCount","_samples","length","count","Math","min","getCaps","maxMSAASamples","gpuTextureWrapper","_hardwareTexture","releaseMSAATexture","getBaseArrayLayer","lastTextureIsDepthTexture","_depthStencilTexture","createMSAATexture","isMulti","_generateMipmaps","resolveMultiFramebuffer","_texture","Error","bindAttachments","_currentRenderPass","buildTextureLayout","textureStatus","result","restoreSingleAttachment","restoreSingleAttachmentForRenderTarget"],"sources":["F:/workspace/202226701027/huinongbao-app/node_modules/@babylonjs/core/Engines/WebGPU/Extensions/engine.multiRender.js"],"sourcesContent":["import { InternalTexture } from \"../../../Materials/Textures/internalTexture.js\";\nimport { Logger } from \"../../../Misc/logger.js\";\n\nimport { WebGPUEngine } from \"../../webgpuEngine.js\";\nWebGPUEngine.prototype.unBindMultiColorAttachmentFramebuffer = function (rtWrapper, disableGenerateMipMaps = false, onBeforeUnbind) {\n    if (onBeforeUnbind) {\n        onBeforeUnbind();\n    }\n    this._endCurrentRenderPass();\n    if (!disableGenerateMipMaps) {\n        this.generateMipMapsMultiFramebuffer(rtWrapper);\n    }\n    this._currentRenderTarget = null;\n    this._mrtAttachments = [];\n    this._cacheRenderPipeline.setMRT([]);\n    this._cacheRenderPipeline.setMRTAttachments(this._mrtAttachments);\n};\nWebGPUEngine.prototype.createMultipleRenderTarget = function (size, options, initializeBuffers) {\n    let generateMipMaps = false;\n    let generateDepthBuffer = true;\n    let generateStencilBuffer = false;\n    let generateDepthTexture = false;\n    let depthTextureFormat = 15;\n    let textureCount = 1;\n    let samples = 1;\n    const defaultType = 0;\n    const defaultSamplingMode = 3;\n    const defaultUseSRGBBuffer = false;\n    const defaultFormat = 5;\n    const defaultTarget = 3553;\n    let types = [];\n    let samplingModes = [];\n    let useSRGBBuffers = [];\n    let formats = [];\n    let targets = [];\n    let faceIndex = [];\n    let layerIndex = [];\n    let layers = [];\n    let labels = [];\n    let creationFlags = [];\n    let dontCreateTextures = false;\n    const rtWrapper = this._createHardwareRenderTargetWrapper(true, false, size);\n    if (options !== undefined) {\n        generateMipMaps = options.generateMipMaps ?? false;\n        generateDepthBuffer = options.generateDepthBuffer ?? true;\n        generateStencilBuffer = options.generateStencilBuffer ?? false;\n        generateDepthTexture = options.generateDepthTexture ?? false;\n        textureCount = options.textureCount ?? 1;\n        depthTextureFormat = options.depthTextureFormat ?? 15;\n        types = options.types || types;\n        samplingModes = options.samplingModes || samplingModes;\n        useSRGBBuffers = options.useSRGBBuffers || useSRGBBuffers;\n        formats = options.formats || formats;\n        targets = options.targetTypes || targets;\n        faceIndex = options.faceIndex || faceIndex;\n        layerIndex = options.layerIndex || layerIndex;\n        layers = options.layerCounts || layers;\n        labels = options.labels || labels;\n        creationFlags = options.creationFlags || creationFlags;\n        samples = options.samples ?? samples;\n        dontCreateTextures = options.dontCreateTextures ?? false;\n    }\n    const width = size.width ?? size;\n    const height = size.height ?? size;\n    const textures = [];\n    const attachments = [];\n    const defaultAttachments = [];\n    rtWrapper.label = options?.label ?? \"MultiRenderTargetWrapper\";\n    rtWrapper._generateDepthBuffer = generateDepthBuffer;\n    rtWrapper._generateStencilBuffer = generateStencilBuffer;\n    rtWrapper._attachments = attachments;\n    rtWrapper._defaultAttachments = defaultAttachments;\n    let depthStencilTexture = null;\n    if ((generateDepthBuffer || generateStencilBuffer || generateDepthTexture) && !dontCreateTextures) {\n        if (!generateDepthTexture) {\n            // The caller doesn't want a depth texture, so we are free to use the depth texture format we want.\n            // So, we will align with what the WebGL engine does\n            if (generateDepthBuffer && generateStencilBuffer) {\n                depthTextureFormat = 13;\n            }\n            else if (generateDepthBuffer) {\n                depthTextureFormat = 14;\n            }\n            else {\n                depthTextureFormat = 19;\n            }\n        }\n        depthStencilTexture = rtWrapper.createDepthStencilTexture(0, false, generateStencilBuffer, 1, depthTextureFormat, rtWrapper.label + \"-DepthStencil\");\n    }\n    const mipmapsCreationOnly = options !== undefined && typeof options === \"object\" && options.createMipMaps && !generateMipMaps;\n    for (let i = 0; i < textureCount; i++) {\n        let samplingMode = samplingModes[i] || defaultSamplingMode;\n        let type = types[i] || defaultType;\n        const format = formats[i] || defaultFormat;\n        const useSRGBBuffer = (useSRGBBuffers[i] || defaultUseSRGBBuffer) && this._caps.supportSRGBBuffers;\n        const target = targets[i] || defaultTarget;\n        const layerCount = layers[i] ?? 1;\n        const creationFlag = creationFlags[i];\n        if (type === 1 && !this._caps.textureFloatLinearFiltering) {\n            // if floating point linear (FLOAT) then force to NEAREST_SAMPLINGMODE\n            samplingMode = 1;\n        }\n        else if (type === 2 && !this._caps.textureHalfFloatLinearFiltering) {\n            // if floating point linear (HALF_FLOAT) then force to NEAREST_SAMPLINGMODE\n            samplingMode = 1;\n        }\n        if (type === 1 && !this._caps.textureFloat) {\n            type = 0;\n            Logger.Warn(\"Float textures are not supported. Render target forced to TEXTURETYPE_UNSIGNED_BYTE type\");\n        }\n        attachments.push(i + 1);\n        defaultAttachments.push(initializeBuffers ? i + 1 : i === 0 ? 1 : 0);\n        if (target === -1 || dontCreateTextures) {\n            continue;\n        }\n        const texture = new InternalTexture(this, 6 /* InternalTextureSource.MultiRenderTarget */);\n        textures[i] = texture;\n        switch (target) {\n            case 34067:\n                texture.isCube = true;\n                break;\n            case 32879:\n                texture.is3D = true;\n                texture.baseDepth = texture.depth = layerCount;\n                break;\n            case 35866:\n                texture.is2DArray = true;\n                texture.baseDepth = texture.depth = layerCount;\n                break;\n        }\n        texture.baseWidth = width;\n        texture.baseHeight = height;\n        texture.width = width;\n        texture.height = height;\n        texture.isReady = true;\n        texture.samples = 1;\n        texture.generateMipMaps = generateMipMaps;\n        texture.samplingMode = samplingMode;\n        texture.type = type;\n        texture._cachedWrapU = 0;\n        texture._cachedWrapV = 0;\n        texture._useSRGBBuffer = useSRGBBuffer;\n        texture.format = format;\n        texture.label = labels[i] ?? rtWrapper.label + \"-Texture\" + i;\n        this._internalTexturesCache.push(texture);\n        if (mipmapsCreationOnly) {\n            // createGPUTextureForInternalTexture will only create a texture with mipmaps if generateMipMaps is true, as InternalTexture has no createMipMaps property, separate from generateMipMaps.\n            texture.generateMipMaps = true;\n        }\n        this._textureHelper.createGPUTextureForInternalTexture(texture, undefined, undefined, undefined, creationFlag, true);\n        if (mipmapsCreationOnly) {\n            texture.generateMipMaps = false;\n        }\n    }\n    if (depthStencilTexture) {\n        depthStencilTexture.incrementReferences();\n        textures[textureCount] = depthStencilTexture;\n        this._internalTexturesCache.push(depthStencilTexture);\n    }\n    rtWrapper.setTextures(textures);\n    rtWrapper.setLayerAndFaceIndices(layerIndex, faceIndex);\n    if (!dontCreateTextures) {\n        this.updateMultipleRenderTargetTextureSampleCount(rtWrapper, samples);\n    }\n    else {\n        rtWrapper._samples = samples;\n    }\n    return rtWrapper;\n};\nWebGPUEngine.prototype.updateMultipleRenderTargetTextureSampleCount = function (rtWrapper, samples) {\n    if (!rtWrapper || !rtWrapper.textures || rtWrapper.textures.length === 0 || rtWrapper.textures[0].samples === samples) {\n        return samples;\n    }\n    const count = rtWrapper.textures.length;\n    if (count === 0) {\n        return 1;\n    }\n    samples = Math.min(samples, this.getCaps().maxMSAASamples);\n    for (let i = 0; i < count; ++i) {\n        const texture = rtWrapper.textures[i];\n        const gpuTextureWrapper = texture._hardwareTexture;\n        gpuTextureWrapper?.releaseMSAATexture(rtWrapper.getBaseArrayLayer(i));\n    }\n    // Note that rtWrapper.textures can't have null textures, lastTextureIsDepthTexture can't be true if rtWrapper._depthStencilTexture is null\n    const lastTextureIsDepthTexture = rtWrapper._depthStencilTexture === rtWrapper.textures[count - 1];\n    for (let i = 0; i < count; ++i) {\n        const texture = rtWrapper.textures[i];\n        this._textureHelper.createMSAATexture(texture, samples, false, rtWrapper.getBaseArrayLayer(i));\n        texture.samples = samples;\n    }\n    // Note that the last texture of textures is the depth texture if the depth texture has been generated by the MRT class and so the MSAA texture\n    // will be recreated for this texture by the loop above: in that case, there's no need to create the MSAA texture for rtWrapper._depthStencilTexture\n    // because rtWrapper._depthStencilTexture is the same texture than the depth texture\n    if (rtWrapper._depthStencilTexture && !lastTextureIsDepthTexture) {\n        this._textureHelper.createMSAATexture(rtWrapper._depthStencilTexture, samples);\n        rtWrapper._depthStencilTexture.samples = samples;\n    }\n    rtWrapper._samples = samples;\n    return samples;\n};\nWebGPUEngine.prototype.generateMipMapsMultiFramebuffer = function (texture) {\n    const rtWrapper = texture;\n    if (!rtWrapper.isMulti) {\n        return;\n    }\n    const attachments = rtWrapper._attachments;\n    const count = attachments.length;\n    for (let i = 0; i < count; i++) {\n        const texture = rtWrapper.textures[i];\n        if (texture.generateMipMaps && !texture.isCube && !texture.is3D) {\n            this._generateMipmaps(texture);\n        }\n    }\n};\nWebGPUEngine.prototype.resolveMultiFramebuffer = function (_texture) {\n    throw new Error(\"resolveMultiFramebuffer is not yet implemented in WebGPU!\");\n};\nWebGPUEngine.prototype.bindAttachments = function (attachments) {\n    if (attachments.length === 0 || !this._currentRenderTarget) {\n        return;\n    }\n    this._mrtAttachments = attachments;\n    if (this._currentRenderPass) {\n        // the render pass has already been created, we need to call setMRTAttachments to update the state of the attachments\n        this._cacheRenderPipeline.setMRTAttachments(attachments);\n    }\n    else {\n        // the render pass is not created yet so we don't need to call setMRTAttachments: it will be called as part of the render pass creation (see WebGPUEngine._startRenderTargetRenderPass)\n    }\n};\nWebGPUEngine.prototype.buildTextureLayout = function (textureStatus) {\n    const result = [];\n    for (let i = 0; i < textureStatus.length; i++) {\n        if (textureStatus[i]) {\n            result.push(i + 1);\n        }\n        else {\n            result.push(0);\n        }\n    }\n    return result;\n};\nWebGPUEngine.prototype.restoreSingleAttachment = function () {\n    // not sure what to do, probably nothing... This function and restoreSingleAttachmentForRenderTarget are not called in Babylon.js so it's hard to know the use case\n};\nWebGPUEngine.prototype.restoreSingleAttachmentForRenderTarget = function () {\n    // not sure what to do, probably nothing... This function and restoreSingleAttachment are not called in Babylon.js so it's hard to know the use 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