| 1 |
- {"ast":null,"code":"/* eslint-disable @typescript-eslint/naming-convention */\nimport { Clamp } from \"../Maths/math.scalar.functions.js\";\nimport { Logger } from \"../Misc/logger.js\";\nimport { CubeMapToSphericalPolynomialTools } from \"../Misc/HighDynamicRange/cubemapToSphericalPolynomial.js\";\nimport { FromHalfFloat, ToHalfFloat } from \"./textureTools.js\";\nimport \"../Engines/AbstractEngine/abstractEngine.cubeTexture.js\";\n// Based on demo done by Brandon Jones - http://media.tojicode.com/webgl-samples/dds.html\n// All values and structures referenced from:\n// http://msdn.microsoft.com/en-us/library/bb943991.aspx/\nconst DDS_MAGIC = 0x20534444;\nconst\n//DDSD_CAPS = 0x1,\n//DDSD_HEIGHT = 0x2,\n//DDSD_WIDTH = 0x4,\n//DDSD_PITCH = 0x8,\n//DDSD_PIXELFORMAT = 0x1000,\nDDSD_MIPMAPCOUNT = 0x20000;\n//DDSD_LINEARSIZE = 0x80000,\n//DDSD_DEPTH = 0x800000;\n// var DDSCAPS_COMPLEX = 0x8,\n// DDSCAPS_MIPMAP = 0x400000,\n// DDSCAPS_TEXTURE = 0x1000;\nconst DDSCAPS2_CUBEMAP = 0x200;\n// DDSCAPS2_CUBEMAP_POSITIVEX = 0x400,\n// DDSCAPS2_CUBEMAP_NEGATIVEX = 0x800,\n// DDSCAPS2_CUBEMAP_POSITIVEY = 0x1000,\n// DDSCAPS2_CUBEMAP_NEGATIVEY = 0x2000,\n// DDSCAPS2_CUBEMAP_POSITIVEZ = 0x4000,\n// DDSCAPS2_CUBEMAP_NEGATIVEZ = 0x8000,\n// DDSCAPS2_VOLUME = 0x200000;\nconst\n //DDPF_ALPHAPIXELS = 0x1,\n //DDPF_ALPHA = 0x2,\n DDPF_FOURCC = 0x4,\n DDPF_RGB = 0x40,\n //DDPF_YUV = 0x200,\n DDPF_LUMINANCE = 0x20000;\nfunction FourCCToInt32(value) {\n return value.charCodeAt(0) + (value.charCodeAt(1) << 8) + (value.charCodeAt(2) << 16) + (value.charCodeAt(3) << 24);\n}\nfunction Int32ToFourCC(value) {\n return String.fromCharCode(value & 0xff, value >> 8 & 0xff, value >> 16 & 0xff, value >> 24 & 0xff);\n}\nconst FOURCC_DXT1 = FourCCToInt32(\"DXT1\");\nconst FOURCC_DXT3 = FourCCToInt32(\"DXT3\");\nconst FOURCC_DXT5 = FourCCToInt32(\"DXT5\");\nconst FOURCC_DX10 = FourCCToInt32(\"DX10\");\nconst FOURCC_D3DFMT_R16G16B16A16F = 113;\nconst FOURCC_D3DFMT_R32G32B32A32F = 116;\nconst DXGI_FORMAT_R32G32B32A32_FLOAT = 2;\nconst DXGI_FORMAT_R16G16B16A16_FLOAT = 10;\nconst DXGI_FORMAT_B8G8R8X8_UNORM = 88;\nconst headerLengthInt = 31; // The header length in 32 bit ints\n// Offsets into the header array\nconst off_magic = 0;\nconst off_size = 1;\nconst off_flags = 2;\nconst off_height = 3;\nconst off_width = 4;\nconst off_mipmapCount = 7;\nconst off_pfFlags = 20;\nconst off_pfFourCC = 21;\nconst off_RGBbpp = 22;\nconst off_RMask = 23;\nconst off_GMask = 24;\nconst off_BMask = 25;\nconst off_AMask = 26;\n// var off_caps1 = 27;\nconst off_caps2 = 28;\n// var off_caps3 = 29;\n// var off_caps4 = 30;\nconst off_dxgiFormat = 32;\n/**\n * Class used to provide DDS decompression tools\n */\nexport class DDSTools {\n /**\n * Gets DDS information from an array buffer\n * @param data defines the array buffer view to read data from\n * @returns the DDS information\n */\n static GetDDSInfo(data) {\n const header = new Int32Array(data.buffer, data.byteOffset, headerLengthInt);\n const extendedHeader = new Int32Array(data.buffer, data.byteOffset, headerLengthInt + 4);\n let mipmapCount = 1;\n if (header[off_flags] & DDSD_MIPMAPCOUNT) {\n mipmapCount = Math.max(1, header[off_mipmapCount]);\n }\n const fourCC = header[off_pfFourCC];\n const dxgiFormat = fourCC === FOURCC_DX10 ? extendedHeader[off_dxgiFormat] : 0;\n let textureType = 0;\n switch (fourCC) {\n case FOURCC_D3DFMT_R16G16B16A16F:\n textureType = 2;\n break;\n case FOURCC_D3DFMT_R32G32B32A32F:\n textureType = 1;\n break;\n case FOURCC_DX10:\n if (dxgiFormat === DXGI_FORMAT_R16G16B16A16_FLOAT) {\n textureType = 2;\n break;\n }\n if (dxgiFormat === DXGI_FORMAT_R32G32B32A32_FLOAT) {\n textureType = 1;\n break;\n }\n }\n return {\n width: header[off_width],\n height: header[off_height],\n mipmapCount: mipmapCount,\n isFourCC: (header[off_pfFlags] & DDPF_FOURCC) === DDPF_FOURCC,\n isRGB: (header[off_pfFlags] & DDPF_RGB) === DDPF_RGB,\n isLuminance: (header[off_pfFlags] & DDPF_LUMINANCE) === DDPF_LUMINANCE,\n isCube: (header[off_caps2] & DDSCAPS2_CUBEMAP) === DDSCAPS2_CUBEMAP,\n isCompressed: fourCC === FOURCC_DXT1 || fourCC === FOURCC_DXT3 || fourCC === FOURCC_DXT5,\n dxgiFormat: dxgiFormat,\n textureType: textureType\n };\n }\n static _GetHalfFloatAsFloatRGBAArrayBuffer(width, height, dataOffset, dataLength, arrayBuffer, lod) {\n const destArray = new Float32Array(dataLength);\n const srcData = new Uint16Array(arrayBuffer, dataOffset);\n let index = 0;\n for (let y = 0; y < height; y++) {\n for (let x = 0; x < width; x++) {\n const srcPos = (x + y * width) * 4;\n destArray[index] = FromHalfFloat(srcData[srcPos]);\n destArray[index + 1] = FromHalfFloat(srcData[srcPos + 1]);\n destArray[index + 2] = FromHalfFloat(srcData[srcPos + 2]);\n if (DDSTools.StoreLODInAlphaChannel) {\n destArray[index + 3] = lod;\n } else {\n destArray[index + 3] = FromHalfFloat(srcData[srcPos + 3]);\n }\n index += 4;\n }\n }\n return destArray;\n }\n static _GetHalfFloatRGBAArrayBuffer(width, height, dataOffset, dataLength, arrayBuffer, lod) {\n if (DDSTools.StoreLODInAlphaChannel) {\n const destArray = new Uint16Array(dataLength);\n const srcData = new Uint16Array(arrayBuffer, dataOffset);\n let index = 0;\n for (let y = 0; y < height; y++) {\n for (let x = 0; x < width; x++) {\n const srcPos = (x + y * width) * 4;\n destArray[index] = srcData[srcPos];\n destArray[index + 1] = srcData[srcPos + 1];\n destArray[index + 2] = srcData[srcPos + 2];\n destArray[index + 3] = ToHalfFloat(lod);\n index += 4;\n }\n }\n return destArray;\n }\n return new Uint16Array(arrayBuffer, dataOffset, dataLength);\n }\n static _GetFloatRGBAArrayBuffer(width, height, dataOffset, dataLength, arrayBuffer, lod) {\n if (DDSTools.StoreLODInAlphaChannel) {\n const destArray = new Float32Array(dataLength);\n const srcData = new Float32Array(arrayBuffer, dataOffset);\n let index = 0;\n for (let y = 0; y < height; y++) {\n for (let x = 0; x < width; x++) {\n const srcPos = (x + y * width) * 4;\n destArray[index] = srcData[srcPos];\n destArray[index + 1] = srcData[srcPos + 1];\n destArray[index + 2] = srcData[srcPos + 2];\n destArray[index + 3] = lod;\n index += 4;\n }\n }\n return destArray;\n }\n return new Float32Array(arrayBuffer, dataOffset, dataLength);\n }\n static _GetFloatAsHalfFloatRGBAArrayBuffer(width, height, dataOffset, dataLength, arrayBuffer, lod) {\n const destArray = new Uint16Array(dataLength);\n const srcData = new Float32Array(arrayBuffer, dataOffset);\n let index = 0;\n for (let y = 0; y < height; y++) {\n for (let x = 0; x < width; x++) {\n destArray[index] = ToHalfFloat(srcData[index]);\n destArray[index + 1] = ToHalfFloat(srcData[index + 1]);\n destArray[index + 2] = ToHalfFloat(srcData[index + 2]);\n if (DDSTools.StoreLODInAlphaChannel) {\n destArray[index + 3] = ToHalfFloat(lod);\n } else {\n destArray[index + 3] = ToHalfFloat(srcData[index + 3]);\n }\n index += 4;\n }\n }\n return destArray;\n }\n static _GetFloatAsUIntRGBAArrayBuffer(width, height, dataOffset, dataLength, arrayBuffer, lod) {\n const destArray = new Uint8Array(dataLength);\n const srcData = new Float32Array(arrayBuffer, dataOffset);\n let index = 0;\n for (let y = 0; y < height; y++) {\n for (let x = 0; x < width; x++) {\n const srcPos = (x + y * width) * 4;\n destArray[index] = Clamp(srcData[srcPos]) * 255;\n destArray[index + 1] = Clamp(srcData[srcPos + 1]) * 255;\n destArray[index + 2] = Clamp(srcData[srcPos + 2]) * 255;\n if (DDSTools.StoreLODInAlphaChannel) {\n destArray[index + 3] = lod;\n } else {\n destArray[index + 3] = Clamp(srcData[srcPos + 3]) * 255;\n }\n index += 4;\n }\n }\n return destArray;\n }\n static _GetHalfFloatAsUIntRGBAArrayBuffer(width, height, dataOffset, dataLength, arrayBuffer, lod) {\n const destArray = new Uint8Array(dataLength);\n const srcData = new Uint16Array(arrayBuffer, dataOffset);\n let index = 0;\n for (let y = 0; y < height; y++) {\n for (let x = 0; x < width; x++) {\n const srcPos = (x + y * width) * 4;\n destArray[index] = Clamp(FromHalfFloat(srcData[srcPos])) * 255;\n destArray[index + 1] = Clamp(FromHalfFloat(srcData[srcPos + 1])) * 255;\n destArray[index + 2] = Clamp(FromHalfFloat(srcData[srcPos + 2])) * 255;\n if (DDSTools.StoreLODInAlphaChannel) {\n destArray[index + 3] = lod;\n } else {\n destArray[index + 3] = Clamp(FromHalfFloat(srcData[srcPos + 3])) * 255;\n }\n index += 4;\n }\n }\n return destArray;\n }\n static _GetRGBAArrayBuffer(width, height, dataOffset, dataLength, arrayBuffer, rOffset, gOffset, bOffset, aOffset) {\n const byteArray = new Uint8Array(dataLength);\n const srcData = new Uint8Array(arrayBuffer, dataOffset);\n let index = 0;\n for (let y = 0; y < height; y++) {\n for (let x = 0; x < width; x++) {\n const srcPos = (x + y * width) * 4;\n byteArray[index] = srcData[srcPos + rOffset];\n byteArray[index + 1] = srcData[srcPos + gOffset];\n byteArray[index + 2] = srcData[srcPos + bOffset];\n byteArray[index + 3] = srcData[srcPos + aOffset];\n index += 4;\n }\n }\n return byteArray;\n }\n static _ExtractLongWordOrder(value) {\n if (value === 0 || value === 255 || value === -16777216) {\n return 0;\n }\n return 1 + DDSTools._ExtractLongWordOrder(value >> 8);\n }\n static _GetRGBArrayBuffer(width, height, dataOffset, dataLength, arrayBuffer, rOffset, gOffset, bOffset) {\n const byteArray = new Uint8Array(dataLength);\n const srcData = new Uint8Array(arrayBuffer, dataOffset);\n let index = 0;\n for (let y = 0; y < height; y++) {\n for (let x = 0; x < width; x++) {\n const srcPos = (x + y * width) * 3;\n byteArray[index] = srcData[srcPos + rOffset];\n byteArray[index + 1] = srcData[srcPos + gOffset];\n byteArray[index + 2] = srcData[srcPos + bOffset];\n index += 3;\n }\n }\n return byteArray;\n }\n static _GetLuminanceArrayBuffer(width, height, dataOffset, dataLength, arrayBuffer) {\n const byteArray = new Uint8Array(dataLength);\n const srcData = new Uint8Array(arrayBuffer, dataOffset);\n let index = 0;\n for (let y = 0; y < height; y++) {\n for (let x = 0; x < width; x++) {\n const srcPos = x + y * width;\n byteArray[index] = srcData[srcPos];\n index++;\n }\n }\n return byteArray;\n }\n /**\n * Uploads DDS Levels to a Babylon Texture\n * @internal\n */\n static UploadDDSLevels(engine, texture, data, info, loadMipmaps, faces, lodIndex = -1, currentFace, destTypeMustBeFilterable = true) {\n let sphericalPolynomialFaces = null;\n if (info.sphericalPolynomial) {\n sphericalPolynomialFaces = [];\n }\n const ext = !!engine.getCaps().s3tc;\n // TODO WEBGPU Once generateMipMaps is split into generateMipMaps + hasMipMaps in InternalTexture this line can be removed\n texture.generateMipMaps = loadMipmaps;\n const header = new Int32Array(data.buffer, data.byteOffset, headerLengthInt);\n let fourCC,\n width,\n height,\n dataLength = 0,\n dataOffset;\n let byteArray, mipmapCount, mip;\n let internalCompressedFormat = 0;\n let blockBytes = 1;\n if (header[off_magic] !== DDS_MAGIC) {\n Logger.Error(\"Invalid magic number in DDS header\");\n return;\n }\n if (!info.isFourCC && !info.isRGB && !info.isLuminance) {\n Logger.Error(\"Unsupported format, must contain a FourCC, RGB or LUMINANCE code\");\n return;\n }\n if (info.isCompressed && !ext) {\n Logger.Error(\"Compressed textures are not supported on this platform.\");\n return;\n }\n let bpp = header[off_RGBbpp];\n dataOffset = header[off_size] + 4;\n let computeFormats = false;\n if (info.isFourCC) {\n fourCC = header[off_pfFourCC];\n switch (fourCC) {\n case FOURCC_DXT1:\n blockBytes = 8;\n internalCompressedFormat = 33777;\n break;\n case FOURCC_DXT3:\n blockBytes = 16;\n internalCompressedFormat = 33778;\n break;\n case FOURCC_DXT5:\n blockBytes = 16;\n internalCompressedFormat = 33779;\n break;\n case FOURCC_D3DFMT_R16G16B16A16F:\n computeFormats = true;\n bpp = 64;\n break;\n case FOURCC_D3DFMT_R32G32B32A32F:\n computeFormats = true;\n bpp = 128;\n break;\n case FOURCC_DX10:\n {\n // There is an additionnal header so dataOffset need to be changed\n dataOffset += 5 * 4; // 5 uints\n let supported = false;\n switch (info.dxgiFormat) {\n case DXGI_FORMAT_R16G16B16A16_FLOAT:\n computeFormats = true;\n bpp = 64;\n supported = true;\n break;\n case DXGI_FORMAT_R32G32B32A32_FLOAT:\n computeFormats = true;\n bpp = 128;\n supported = true;\n break;\n case DXGI_FORMAT_B8G8R8X8_UNORM:\n info.isRGB = true;\n info.isFourCC = false;\n bpp = 32;\n supported = true;\n break;\n }\n if (supported) {\n break;\n }\n }\n // eslint-disable-next-line no-fallthrough\n default:\n Logger.Error([\"Unsupported FourCC code:\", Int32ToFourCC(fourCC)]);\n return;\n }\n }\n const rOffset = DDSTools._ExtractLongWordOrder(header[off_RMask]);\n const gOffset = DDSTools._ExtractLongWordOrder(header[off_GMask]);\n const bOffset = DDSTools._ExtractLongWordOrder(header[off_BMask]);\n const aOffset = DDSTools._ExtractLongWordOrder(header[off_AMask]);\n if (computeFormats) {\n internalCompressedFormat = engine._getRGBABufferInternalSizedFormat(info.textureType);\n }\n mipmapCount = 1;\n if (header[off_flags] & DDSD_MIPMAPCOUNT && loadMipmaps !== false) {\n mipmapCount = Math.max(1, header[off_mipmapCount]);\n }\n const startFace = currentFace || 0;\n const caps = engine.getCaps();\n for (let face = startFace; face < faces; face++) {\n width = header[off_width];\n height = header[off_height];\n for (mip = 0; mip < mipmapCount; ++mip) {\n if (lodIndex === -1 || lodIndex === mip) {\n // In case of fixed LOD, if the lod has just been uploaded, early exit.\n const i = lodIndex === -1 ? mip : 0;\n if (!info.isCompressed && info.isFourCC) {\n texture.format = 5;\n dataLength = width * height * 4;\n let floatArray = null;\n if (engine._badOS || engine._badDesktopOS || !caps.textureHalfFloat && !caps.textureFloat) {\n // Required because iOS has many issues with float and half float generation\n if (bpp === 128) {\n floatArray = DDSTools._GetFloatAsUIntRGBAArrayBuffer(width, height, data.byteOffset + dataOffset, dataLength, data.buffer, i);\n if (sphericalPolynomialFaces && i == 0) {\n sphericalPolynomialFaces.push(DDSTools._GetFloatRGBAArrayBuffer(width, height, data.byteOffset + dataOffset, dataLength, data.buffer, i));\n }\n } else if (bpp === 64) {\n floatArray = DDSTools._GetHalfFloatAsUIntRGBAArrayBuffer(width, height, data.byteOffset + dataOffset, dataLength, data.buffer, i);\n if (sphericalPolynomialFaces && i == 0) {\n sphericalPolynomialFaces.push(DDSTools._GetHalfFloatAsFloatRGBAArrayBuffer(width, height, data.byteOffset + dataOffset, dataLength, data.buffer, i));\n }\n }\n texture.type = 0;\n } else {\n const floatAvailable = caps.textureFloat && (destTypeMustBeFilterable && caps.textureFloatLinearFiltering || !destTypeMustBeFilterable);\n const halfFloatAvailable = caps.textureHalfFloat && (destTypeMustBeFilterable && caps.textureHalfFloatLinearFiltering || !destTypeMustBeFilterable);\n const destType = (bpp === 128 || bpp === 64 && !halfFloatAvailable) && floatAvailable ? 1 : (bpp === 64 || bpp === 128 && !floatAvailable) && halfFloatAvailable ? 2 : 0;\n let dataGetter;\n let dataGetterPolynomial = null;\n switch (bpp) {\n case 128:\n {\n switch (destType) {\n case 1:\n dataGetter = DDSTools._GetFloatRGBAArrayBuffer;\n dataGetterPolynomial = null;\n break;\n case 2:\n dataGetter = DDSTools._GetFloatAsHalfFloatRGBAArrayBuffer;\n dataGetterPolynomial = DDSTools._GetFloatRGBAArrayBuffer;\n break;\n case 0:\n dataGetter = DDSTools._GetFloatAsUIntRGBAArrayBuffer;\n dataGetterPolynomial = DDSTools._GetFloatRGBAArrayBuffer;\n break;\n }\n break;\n }\n default:\n {\n // 64 bpp\n switch (destType) {\n case 1:\n dataGetter = DDSTools._GetHalfFloatAsFloatRGBAArrayBuffer;\n dataGetterPolynomial = null;\n break;\n case 2:\n dataGetter = DDSTools._GetHalfFloatRGBAArrayBuffer;\n dataGetterPolynomial = DDSTools._GetHalfFloatAsFloatRGBAArrayBuffer;\n break;\n case 0:\n dataGetter = DDSTools._GetHalfFloatAsUIntRGBAArrayBuffer;\n dataGetterPolynomial = DDSTools._GetHalfFloatAsFloatRGBAArrayBuffer;\n break;\n }\n break;\n }\n }\n texture.type = destType;\n floatArray = dataGetter(width, height, data.byteOffset + dataOffset, dataLength, data.buffer, i);\n if (sphericalPolynomialFaces && i == 0) {\n sphericalPolynomialFaces.push(dataGetterPolynomial ? dataGetterPolynomial(width, height, data.byteOffset + dataOffset, dataLength, data.buffer, i) : floatArray);\n }\n }\n if (floatArray) {\n engine._uploadDataToTextureDirectly(texture, floatArray, face, i);\n }\n } else if (info.isRGB) {\n texture.type = 0;\n if (bpp === 24) {\n texture.format = 4;\n dataLength = width * height * 3;\n byteArray = DDSTools._GetRGBArrayBuffer(width, height, data.byteOffset + dataOffset, dataLength, data.buffer, rOffset, gOffset, bOffset);\n engine._uploadDataToTextureDirectly(texture, byteArray, face, i);\n } else {\n // 32\n texture.format = 5;\n dataLength = width * height * 4;\n byteArray = DDSTools._GetRGBAArrayBuffer(width, height, data.byteOffset + dataOffset, dataLength, data.buffer, rOffset, gOffset, bOffset, aOffset);\n engine._uploadDataToTextureDirectly(texture, byteArray, face, i);\n }\n } else if (info.isLuminance) {\n const unpackAlignment = engine._getUnpackAlignement();\n const unpaddedRowSize = width;\n const paddedRowSize = Math.floor((width + unpackAlignment - 1) / unpackAlignment) * unpackAlignment;\n dataLength = paddedRowSize * (height - 1) + unpaddedRowSize;\n byteArray = DDSTools._GetLuminanceArrayBuffer(width, height, data.byteOffset + dataOffset, dataLength, data.buffer);\n texture.format = 1;\n texture.type = 0;\n engine._uploadDataToTextureDirectly(texture, byteArray, face, i);\n } else {\n dataLength = Math.max(4, width) / 4 * Math.max(4, height) / 4 * blockBytes;\n byteArray = new Uint8Array(data.buffer, data.byteOffset + dataOffset, dataLength);\n texture.type = 0;\n engine._uploadCompressedDataToTextureDirectly(texture, internalCompressedFormat, width, height, byteArray, face, i);\n }\n }\n dataOffset += bpp ? width * height * (bpp / 8) : dataLength;\n width *= 0.5;\n height *= 0.5;\n width = Math.max(1.0, width);\n height = Math.max(1.0, height);\n }\n if (currentFace !== undefined) {\n // Loading a single face\n break;\n }\n }\n if (sphericalPolynomialFaces && sphericalPolynomialFaces.length > 0) {\n info.sphericalPolynomial = CubeMapToSphericalPolynomialTools.ConvertCubeMapToSphericalPolynomial({\n size: header[off_width],\n right: sphericalPolynomialFaces[0],\n left: sphericalPolynomialFaces[1],\n up: sphericalPolynomialFaces[2],\n down: sphericalPolynomialFaces[3],\n front: sphericalPolynomialFaces[4],\n back: sphericalPolynomialFaces[5],\n format: 5,\n type: 1,\n gammaSpace: false\n });\n } else {\n info.sphericalPolynomial = undefined;\n }\n }\n}\n/**\n * Gets or sets a boolean indicating that LOD info is stored in alpha channel (false by default)\n */\nDDSTools.StoreLODInAlphaChannel = false;","map":{"version":3,"names":["Clamp","Logger","CubeMapToSphericalPolynomialTools","FromHalfFloat","ToHalfFloat","DDS_MAGIC","DDSD_MIPMAPCOUNT","DDSCAPS2_CUBEMAP","DDPF_FOURCC","DDPF_RGB","DDPF_LUMINANCE","FourCCToInt32","value","charCodeAt","Int32ToFourCC","String","fromCharCode","FOURCC_DXT1","FOURCC_DXT3","FOURCC_DXT5","FOURCC_DX10","FOURCC_D3DFMT_R16G16B16A16F","FOURCC_D3DFMT_R32G32B32A32F","DXGI_FORMAT_R32G32B32A32_FLOAT","DXGI_FORMAT_R16G16B16A16_FLOAT","DXGI_FORMAT_B8G8R8X8_UNORM","headerLengthInt","off_magic","off_size","off_flags","off_height","off_width","off_mipmapCount","off_pfFlags","off_pfFourCC","off_RGBbpp","off_RMask","off_GMask","off_BMask","off_AMask","off_caps2","off_dxgiFormat","DDSTools","GetDDSInfo","data","header","Int32Array","buffer","byteOffset","extendedHeader","mipmapCount","Math","max","fourCC","dxgiFormat","textureType","width","height","isFourCC","isRGB","isLuminance","isCube","isCompressed","_GetHalfFloatAsFloatRGBAArrayBuffer","dataOffset","dataLength","arrayBuffer","lod","destArray","Float32Array","srcData","Uint16Array","index","y","x","srcPos","StoreLODInAlphaChannel","_GetHalfFloatRGBAArrayBuffer","_GetFloatRGBAArrayBuffer","_GetFloatAsHalfFloatRGBAArrayBuffer","_GetFloatAsUIntRGBAArrayBuffer","Uint8Array","_GetHalfFloatAsUIntRGBAArrayBuffer","_GetRGBAArrayBuffer","rOffset","gOffset","bOffset","aOffset","byteArray","_ExtractLongWordOrder","_GetRGBArrayBuffer","_GetLuminanceArrayBuffer","UploadDDSLevels","engine","texture","info","loadMipmaps","faces","lodIndex","currentFace","destTypeMustBeFilterable","sphericalPolynomialFaces","sphericalPolynomial","ext","getCaps","s3tc","generateMipMaps","mip","internalCompressedFormat","blockBytes","Error","bpp","computeFormats","supported","_getRGBABufferInternalSizedFormat","startFace","caps","face","i","format","floatArray","_badOS","_badDesktopOS","textureHalfFloat","textureFloat","push","type","floatAvailable","textureFloatLinearFiltering","halfFloatAvailable","textureHalfFloatLinearFiltering","destType","dataGetter","dataGetterPolynomial","_uploadDataToTextureDirectly","unpackAlignment","_getUnpackAlignement","unpaddedRowSize","paddedRowSize","floor","_uploadCompressedDataToTextureDirectly","undefined","length","ConvertCubeMapToSphericalPolynomial","size","right","left","up","down","front","back","gammaSpace"],"sources":["F:/workspace/202226701027/huinongbao-app/node_modules/@babylonjs/core/Misc/dds.js"],"sourcesContent":["/* eslint-disable @typescript-eslint/naming-convention */\nimport { Clamp } from \"../Maths/math.scalar.functions.js\";\n\nimport { Logger } from \"../Misc/logger.js\";\nimport { CubeMapToSphericalPolynomialTools } from \"../Misc/HighDynamicRange/cubemapToSphericalPolynomial.js\";\nimport { FromHalfFloat, ToHalfFloat } from \"./textureTools.js\";\nimport \"../Engines/AbstractEngine/abstractEngine.cubeTexture.js\";\n// Based on demo done by Brandon Jones - http://media.tojicode.com/webgl-samples/dds.html\n// All values and structures referenced from:\n// http://msdn.microsoft.com/en-us/library/bb943991.aspx/\nconst DDS_MAGIC = 0x20534444;\nconst //DDSD_CAPS = 0x1,\n//DDSD_HEIGHT = 0x2,\n//DDSD_WIDTH = 0x4,\n//DDSD_PITCH = 0x8,\n//DDSD_PIXELFORMAT = 0x1000,\nDDSD_MIPMAPCOUNT = 0x20000;\n//DDSD_LINEARSIZE = 0x80000,\n//DDSD_DEPTH = 0x800000;\n// var DDSCAPS_COMPLEX = 0x8,\n// DDSCAPS_MIPMAP = 0x400000,\n// DDSCAPS_TEXTURE = 0x1000;\nconst DDSCAPS2_CUBEMAP = 0x200;\n// DDSCAPS2_CUBEMAP_POSITIVEX = 0x400,\n// DDSCAPS2_CUBEMAP_NEGATIVEX = 0x800,\n// DDSCAPS2_CUBEMAP_POSITIVEY = 0x1000,\n// DDSCAPS2_CUBEMAP_NEGATIVEY = 0x2000,\n// DDSCAPS2_CUBEMAP_POSITIVEZ = 0x4000,\n// DDSCAPS2_CUBEMAP_NEGATIVEZ = 0x8000,\n// DDSCAPS2_VOLUME = 0x200000;\nconst //DDPF_ALPHAPIXELS = 0x1,\n//DDPF_ALPHA = 0x2,\nDDPF_FOURCC = 0x4, DDPF_RGB = 0x40, \n//DDPF_YUV = 0x200,\nDDPF_LUMINANCE = 0x20000;\nfunction FourCCToInt32(value) {\n return value.charCodeAt(0) + (value.charCodeAt(1) << 8) + (value.charCodeAt(2) << 16) + (value.charCodeAt(3) << 24);\n}\nfunction Int32ToFourCC(value) {\n return String.fromCharCode(value & 0xff, (value >> 8) & 0xff, (value >> 16) & 0xff, (value >> 24) & 0xff);\n}\nconst FOURCC_DXT1 = FourCCToInt32(\"DXT1\");\nconst FOURCC_DXT3 = FourCCToInt32(\"DXT3\");\nconst FOURCC_DXT5 = FourCCToInt32(\"DXT5\");\nconst FOURCC_DX10 = FourCCToInt32(\"DX10\");\nconst FOURCC_D3DFMT_R16G16B16A16F = 113;\nconst FOURCC_D3DFMT_R32G32B32A32F = 116;\nconst DXGI_FORMAT_R32G32B32A32_FLOAT = 2;\nconst DXGI_FORMAT_R16G16B16A16_FLOAT = 10;\nconst DXGI_FORMAT_B8G8R8X8_UNORM = 88;\nconst headerLengthInt = 31; // The header length in 32 bit ints\n// Offsets into the header array\nconst off_magic = 0;\nconst off_size = 1;\nconst off_flags = 2;\nconst off_height = 3;\nconst off_width = 4;\nconst off_mipmapCount = 7;\nconst off_pfFlags = 20;\nconst off_pfFourCC = 21;\nconst off_RGBbpp = 22;\nconst off_RMask = 23;\nconst off_GMask = 24;\nconst off_BMask = 25;\nconst off_AMask = 26;\n// var off_caps1 = 27;\nconst off_caps2 = 28;\n// var off_caps3 = 29;\n// var off_caps4 = 30;\nconst off_dxgiFormat = 32;\n/**\n * Class used to provide DDS decompression tools\n */\nexport class DDSTools {\n /**\n * Gets DDS information from an array buffer\n * @param data defines the array buffer view to read data from\n * @returns the DDS information\n */\n static GetDDSInfo(data) {\n const header = new Int32Array(data.buffer, data.byteOffset, headerLengthInt);\n const extendedHeader = new Int32Array(data.buffer, data.byteOffset, headerLengthInt + 4);\n let mipmapCount = 1;\n if (header[off_flags] & DDSD_MIPMAPCOUNT) {\n mipmapCount = Math.max(1, header[off_mipmapCount]);\n }\n const fourCC = header[off_pfFourCC];\n const dxgiFormat = fourCC === FOURCC_DX10 ? extendedHeader[off_dxgiFormat] : 0;\n let textureType = 0;\n switch (fourCC) {\n case FOURCC_D3DFMT_R16G16B16A16F:\n textureType = 2;\n break;\n case FOURCC_D3DFMT_R32G32B32A32F:\n textureType = 1;\n break;\n case FOURCC_DX10:\n if (dxgiFormat === DXGI_FORMAT_R16G16B16A16_FLOAT) {\n textureType = 2;\n break;\n }\n if (dxgiFormat === DXGI_FORMAT_R32G32B32A32_FLOAT) {\n textureType = 1;\n break;\n }\n }\n return {\n width: header[off_width],\n height: header[off_height],\n mipmapCount: mipmapCount,\n isFourCC: (header[off_pfFlags] & DDPF_FOURCC) === DDPF_FOURCC,\n isRGB: (header[off_pfFlags] & DDPF_RGB) === DDPF_RGB,\n isLuminance: (header[off_pfFlags] & DDPF_LUMINANCE) === DDPF_LUMINANCE,\n isCube: (header[off_caps2] & DDSCAPS2_CUBEMAP) === DDSCAPS2_CUBEMAP,\n isCompressed: fourCC === FOURCC_DXT1 || fourCC === FOURCC_DXT3 || fourCC === FOURCC_DXT5,\n dxgiFormat: dxgiFormat,\n textureType: textureType,\n };\n }\n static _GetHalfFloatAsFloatRGBAArrayBuffer(width, height, dataOffset, dataLength, arrayBuffer, lod) {\n const destArray = new Float32Array(dataLength);\n const srcData = new Uint16Array(arrayBuffer, dataOffset);\n let index = 0;\n for (let y = 0; y < height; y++) {\n for (let x = 0; x < width; x++) {\n const srcPos = (x + y * width) * 4;\n destArray[index] = FromHalfFloat(srcData[srcPos]);\n destArray[index + 1] = FromHalfFloat(srcData[srcPos + 1]);\n destArray[index + 2] = FromHalfFloat(srcData[srcPos + 2]);\n if (DDSTools.StoreLODInAlphaChannel) {\n destArray[index + 3] = lod;\n }\n else {\n destArray[index + 3] = FromHalfFloat(srcData[srcPos + 3]);\n }\n index += 4;\n }\n }\n return destArray;\n }\n static _GetHalfFloatRGBAArrayBuffer(width, height, dataOffset, dataLength, arrayBuffer, lod) {\n if (DDSTools.StoreLODInAlphaChannel) {\n const destArray = new Uint16Array(dataLength);\n const srcData = new Uint16Array(arrayBuffer, dataOffset);\n let index = 0;\n for (let y = 0; y < height; y++) {\n for (let x = 0; x < width; x++) {\n const srcPos = (x + y * width) * 4;\n destArray[index] = srcData[srcPos];\n destArray[index + 1] = srcData[srcPos + 1];\n destArray[index + 2] = srcData[srcPos + 2];\n destArray[index + 3] = ToHalfFloat(lod);\n index += 4;\n }\n }\n return destArray;\n }\n return new Uint16Array(arrayBuffer, dataOffset, dataLength);\n }\n static _GetFloatRGBAArrayBuffer(width, height, dataOffset, dataLength, arrayBuffer, lod) {\n if (DDSTools.StoreLODInAlphaChannel) {\n const destArray = new Float32Array(dataLength);\n const srcData = new Float32Array(arrayBuffer, dataOffset);\n let index = 0;\n for (let y = 0; y < height; y++) {\n for (let x = 0; x < width; x++) {\n const srcPos = (x + y * width) * 4;\n destArray[index] = srcData[srcPos];\n destArray[index + 1] = srcData[srcPos + 1];\n destArray[index + 2] = srcData[srcPos + 2];\n destArray[index + 3] = lod;\n index += 4;\n }\n }\n return destArray;\n }\n return new Float32Array(arrayBuffer, dataOffset, dataLength);\n }\n static _GetFloatAsHalfFloatRGBAArrayBuffer(width, height, dataOffset, dataLength, arrayBuffer, lod) {\n const destArray = new Uint16Array(dataLength);\n const srcData = new Float32Array(arrayBuffer, dataOffset);\n let index = 0;\n for (let y = 0; y < height; y++) {\n for (let x = 0; x < width; x++) {\n destArray[index] = ToHalfFloat(srcData[index]);\n destArray[index + 1] = ToHalfFloat(srcData[index + 1]);\n destArray[index + 2] = ToHalfFloat(srcData[index + 2]);\n if (DDSTools.StoreLODInAlphaChannel) {\n destArray[index + 3] = ToHalfFloat(lod);\n }\n else {\n destArray[index + 3] = ToHalfFloat(srcData[index + 3]);\n }\n index += 4;\n }\n }\n return destArray;\n }\n static _GetFloatAsUIntRGBAArrayBuffer(width, height, dataOffset, dataLength, arrayBuffer, lod) {\n const destArray = new Uint8Array(dataLength);\n const srcData = new Float32Array(arrayBuffer, dataOffset);\n let index = 0;\n for (let y = 0; y < height; y++) {\n for (let x = 0; x < width; x++) {\n const srcPos = (x + y * width) * 4;\n destArray[index] = Clamp(srcData[srcPos]) * 255;\n destArray[index + 1] = Clamp(srcData[srcPos + 1]) * 255;\n destArray[index + 2] = Clamp(srcData[srcPos + 2]) * 255;\n if (DDSTools.StoreLODInAlphaChannel) {\n destArray[index + 3] = lod;\n }\n else {\n destArray[index + 3] = Clamp(srcData[srcPos + 3]) * 255;\n }\n index += 4;\n }\n }\n return destArray;\n }\n static _GetHalfFloatAsUIntRGBAArrayBuffer(width, height, dataOffset, dataLength, arrayBuffer, lod) {\n const destArray = new Uint8Array(dataLength);\n const srcData = new Uint16Array(arrayBuffer, dataOffset);\n let index = 0;\n for (let y = 0; y < height; y++) {\n for (let x = 0; x < width; x++) {\n const srcPos = (x + y * width) * 4;\n destArray[index] = Clamp(FromHalfFloat(srcData[srcPos])) * 255;\n destArray[index + 1] = Clamp(FromHalfFloat(srcData[srcPos + 1])) * 255;\n destArray[index + 2] = Clamp(FromHalfFloat(srcData[srcPos + 2])) * 255;\n if (DDSTools.StoreLODInAlphaChannel) {\n destArray[index + 3] = lod;\n }\n else {\n destArray[index + 3] = Clamp(FromHalfFloat(srcData[srcPos + 3])) * 255;\n }\n index += 4;\n }\n }\n return destArray;\n }\n static _GetRGBAArrayBuffer(width, height, dataOffset, dataLength, arrayBuffer, rOffset, gOffset, bOffset, aOffset) {\n const byteArray = new Uint8Array(dataLength);\n const srcData = new Uint8Array(arrayBuffer, dataOffset);\n let index = 0;\n for (let y = 0; y < height; y++) {\n for (let x = 0; x < width; x++) {\n const srcPos = (x + y * width) * 4;\n byteArray[index] = srcData[srcPos + rOffset];\n byteArray[index + 1] = srcData[srcPos + gOffset];\n byteArray[index + 2] = srcData[srcPos + bOffset];\n byteArray[index + 3] = srcData[srcPos + aOffset];\n index += 4;\n }\n }\n return byteArray;\n }\n static _ExtractLongWordOrder(value) {\n if (value === 0 || value === 255 || value === -16777216) {\n return 0;\n }\n return 1 + DDSTools._ExtractLongWordOrder(value >> 8);\n }\n static _GetRGBArrayBuffer(width, height, dataOffset, dataLength, arrayBuffer, rOffset, gOffset, bOffset) {\n const byteArray = new Uint8Array(dataLength);\n const srcData = new Uint8Array(arrayBuffer, dataOffset);\n let index = 0;\n for (let y = 0; y < height; y++) {\n for (let x = 0; x < width; x++) {\n const srcPos = (x + y * width) * 3;\n byteArray[index] = srcData[srcPos + rOffset];\n byteArray[index + 1] = srcData[srcPos + gOffset];\n byteArray[index + 2] = srcData[srcPos + bOffset];\n index += 3;\n }\n }\n return byteArray;\n }\n static _GetLuminanceArrayBuffer(width, height, dataOffset, dataLength, arrayBuffer) {\n const byteArray = new Uint8Array(dataLength);\n const srcData = new Uint8Array(arrayBuffer, dataOffset);\n let index = 0;\n for (let y = 0; y < height; y++) {\n for (let x = 0; x < width; x++) {\n const srcPos = x + y * width;\n byteArray[index] = srcData[srcPos];\n index++;\n }\n }\n return byteArray;\n }\n /**\n * Uploads DDS Levels to a Babylon Texture\n * @internal\n */\n static UploadDDSLevels(engine, texture, data, info, loadMipmaps, faces, lodIndex = -1, currentFace, destTypeMustBeFilterable = true) {\n let sphericalPolynomialFaces = null;\n if (info.sphericalPolynomial) {\n sphericalPolynomialFaces = [];\n }\n const ext = !!engine.getCaps().s3tc;\n // TODO WEBGPU Once generateMipMaps is split into generateMipMaps + hasMipMaps in InternalTexture this line can be removed\n texture.generateMipMaps = loadMipmaps;\n const header = new Int32Array(data.buffer, data.byteOffset, headerLengthInt);\n let fourCC, width, height, dataLength = 0, dataOffset;\n let byteArray, mipmapCount, mip;\n let internalCompressedFormat = 0;\n let blockBytes = 1;\n if (header[off_magic] !== DDS_MAGIC) {\n Logger.Error(\"Invalid magic number in DDS header\");\n return;\n }\n if (!info.isFourCC && !info.isRGB && !info.isLuminance) {\n Logger.Error(\"Unsupported format, must contain a FourCC, RGB or LUMINANCE code\");\n return;\n }\n if (info.isCompressed && !ext) {\n Logger.Error(\"Compressed textures are not supported on this platform.\");\n return;\n }\n let bpp = header[off_RGBbpp];\n dataOffset = header[off_size] + 4;\n let computeFormats = false;\n if (info.isFourCC) {\n fourCC = header[off_pfFourCC];\n switch (fourCC) {\n case FOURCC_DXT1:\n blockBytes = 8;\n internalCompressedFormat = 33777;\n break;\n case FOURCC_DXT3:\n blockBytes = 16;\n internalCompressedFormat = 33778;\n break;\n case FOURCC_DXT5:\n blockBytes = 16;\n internalCompressedFormat = 33779;\n break;\n case FOURCC_D3DFMT_R16G16B16A16F:\n computeFormats = true;\n bpp = 64;\n break;\n case FOURCC_D3DFMT_R32G32B32A32F:\n computeFormats = true;\n bpp = 128;\n break;\n case FOURCC_DX10: {\n // There is an additionnal header so dataOffset need to be changed\n dataOffset += 5 * 4; // 5 uints\n let supported = false;\n switch (info.dxgiFormat) {\n case DXGI_FORMAT_R16G16B16A16_FLOAT:\n computeFormats = true;\n bpp = 64;\n supported = true;\n break;\n case DXGI_FORMAT_R32G32B32A32_FLOAT:\n computeFormats = true;\n bpp = 128;\n supported = true;\n break;\n case DXGI_FORMAT_B8G8R8X8_UNORM:\n info.isRGB = true;\n info.isFourCC = false;\n bpp = 32;\n supported = true;\n break;\n }\n if (supported) {\n break;\n }\n }\n // eslint-disable-next-line no-fallthrough\n default:\n Logger.Error([\"Unsupported FourCC code:\", Int32ToFourCC(fourCC)]);\n return;\n }\n }\n const rOffset = DDSTools._ExtractLongWordOrder(header[off_RMask]);\n const gOffset = DDSTools._ExtractLongWordOrder(header[off_GMask]);\n const bOffset = DDSTools._ExtractLongWordOrder(header[off_BMask]);\n const aOffset = DDSTools._ExtractLongWordOrder(header[off_AMask]);\n if (computeFormats) {\n internalCompressedFormat = engine._getRGBABufferInternalSizedFormat(info.textureType);\n }\n mipmapCount = 1;\n if (header[off_flags] & DDSD_MIPMAPCOUNT && loadMipmaps !== false) {\n mipmapCount = Math.max(1, header[off_mipmapCount]);\n }\n const startFace = currentFace || 0;\n const caps = engine.getCaps();\n for (let face = startFace; face < faces; face++) {\n width = header[off_width];\n height = header[off_height];\n for (mip = 0; mip < mipmapCount; ++mip) {\n if (lodIndex === -1 || lodIndex === mip) {\n // In case of fixed LOD, if the lod has just been uploaded, early exit.\n const i = lodIndex === -1 ? mip : 0;\n if (!info.isCompressed && info.isFourCC) {\n texture.format = 5;\n dataLength = width * height * 4;\n let floatArray = null;\n if (engine._badOS || engine._badDesktopOS || (!caps.textureHalfFloat && !caps.textureFloat)) {\n // Required because iOS has many issues with float and half float generation\n if (bpp === 128) {\n floatArray = DDSTools._GetFloatAsUIntRGBAArrayBuffer(width, height, data.byteOffset + dataOffset, dataLength, data.buffer, i);\n if (sphericalPolynomialFaces && i == 0) {\n sphericalPolynomialFaces.push(DDSTools._GetFloatRGBAArrayBuffer(width, height, data.byteOffset + dataOffset, dataLength, data.buffer, i));\n }\n }\n else if (bpp === 64) {\n floatArray = DDSTools._GetHalfFloatAsUIntRGBAArrayBuffer(width, height, data.byteOffset + dataOffset, dataLength, data.buffer, i);\n if (sphericalPolynomialFaces && i == 0) {\n sphericalPolynomialFaces.push(DDSTools._GetHalfFloatAsFloatRGBAArrayBuffer(width, height, data.byteOffset + dataOffset, dataLength, data.buffer, i));\n }\n }\n texture.type = 0;\n }\n else {\n const floatAvailable = caps.textureFloat && ((destTypeMustBeFilterable && caps.textureFloatLinearFiltering) || !destTypeMustBeFilterable);\n const halfFloatAvailable = caps.textureHalfFloat && ((destTypeMustBeFilterable && caps.textureHalfFloatLinearFiltering) || !destTypeMustBeFilterable);\n const destType = (bpp === 128 || (bpp === 64 && !halfFloatAvailable)) && floatAvailable\n ? 1\n : (bpp === 64 || (bpp === 128 && !floatAvailable)) && halfFloatAvailable\n ? 2\n : 0;\n let dataGetter;\n let dataGetterPolynomial = null;\n switch (bpp) {\n case 128: {\n switch (destType) {\n case 1:\n dataGetter = DDSTools._GetFloatRGBAArrayBuffer;\n dataGetterPolynomial = null;\n break;\n case 2:\n dataGetter = DDSTools._GetFloatAsHalfFloatRGBAArrayBuffer;\n dataGetterPolynomial = DDSTools._GetFloatRGBAArrayBuffer;\n break;\n case 0:\n dataGetter = DDSTools._GetFloatAsUIntRGBAArrayBuffer;\n dataGetterPolynomial = DDSTools._GetFloatRGBAArrayBuffer;\n break;\n }\n break;\n }\n default: {\n // 64 bpp\n switch (destType) {\n case 1:\n dataGetter = DDSTools._GetHalfFloatAsFloatRGBAArrayBuffer;\n dataGetterPolynomial = null;\n break;\n case 2:\n dataGetter = DDSTools._GetHalfFloatRGBAArrayBuffer;\n dataGetterPolynomial = DDSTools._GetHalfFloatAsFloatRGBAArrayBuffer;\n break;\n case 0:\n dataGetter = DDSTools._GetHalfFloatAsUIntRGBAArrayBuffer;\n dataGetterPolynomial = DDSTools._GetHalfFloatAsFloatRGBAArrayBuffer;\n break;\n }\n break;\n }\n }\n texture.type = destType;\n floatArray = dataGetter(width, height, data.byteOffset + dataOffset, dataLength, data.buffer, i);\n if (sphericalPolynomialFaces && i == 0) {\n sphericalPolynomialFaces.push(dataGetterPolynomial ? dataGetterPolynomial(width, height, data.byteOffset + dataOffset, dataLength, data.buffer, i) : floatArray);\n }\n }\n if (floatArray) {\n engine._uploadDataToTextureDirectly(texture, floatArray, face, i);\n }\n }\n else if (info.isRGB) {\n texture.type = 0;\n if (bpp === 24) {\n texture.format = 4;\n dataLength = width * height * 3;\n byteArray = DDSTools._GetRGBArrayBuffer(width, height, data.byteOffset + dataOffset, dataLength, data.buffer, rOffset, gOffset, bOffset);\n engine._uploadDataToTextureDirectly(texture, byteArray, face, i);\n }\n else {\n // 32\n texture.format = 5;\n dataLength = width * height * 4;\n byteArray = DDSTools._GetRGBAArrayBuffer(width, height, data.byteOffset + dataOffset, dataLength, data.buffer, rOffset, gOffset, bOffset, aOffset);\n engine._uploadDataToTextureDirectly(texture, byteArray, face, i);\n }\n }\n else if (info.isLuminance) {\n const unpackAlignment = engine._getUnpackAlignement();\n const unpaddedRowSize = width;\n const paddedRowSize = Math.floor((width + unpackAlignment - 1) / unpackAlignment) * unpackAlignment;\n dataLength = paddedRowSize * (height - 1) + unpaddedRowSize;\n byteArray = DDSTools._GetLuminanceArrayBuffer(width, height, data.byteOffset + dataOffset, dataLength, data.buffer);\n texture.format = 1;\n texture.type = 0;\n engine._uploadDataToTextureDirectly(texture, byteArray, face, i);\n }\n else {\n dataLength = (((Math.max(4, width) / 4) * Math.max(4, height)) / 4) * blockBytes;\n byteArray = new Uint8Array(data.buffer, data.byteOffset + dataOffset, dataLength);\n texture.type = 0;\n engine._uploadCompressedDataToTextureDirectly(texture, internalCompressedFormat, width, height, byteArray, face, i);\n }\n }\n dataOffset += bpp ? width * height * (bpp / 8) : dataLength;\n width *= 0.5;\n height *= 0.5;\n width = Math.max(1.0, width);\n height = Math.max(1.0, height);\n }\n if (currentFace !== undefined) {\n // Loading a single face\n break;\n }\n }\n if (sphericalPolynomialFaces && sphericalPolynomialFaces.length > 0) {\n info.sphericalPolynomial = CubeMapToSphericalPolynomialTools.ConvertCubeMapToSphericalPolynomial({\n size: header[off_width],\n right: sphericalPolynomialFaces[0],\n left: sphericalPolynomialFaces[1],\n up: sphericalPolynomialFaces[2],\n down: sphericalPolynomialFaces[3],\n front: sphericalPolynomialFaces[4],\n back: sphericalPolynomialFaces[5],\n format: 5,\n type: 1,\n gammaSpace: false,\n });\n }\n else {\n info.sphericalPolynomial = undefined;\n }\n }\n}\n/**\n * Gets or sets a boolean indicating that LOD info is stored in alpha channel (false by default)\n */\nDDSTools.StoreLODInAlphaChannel = 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