mirror of
https://github.com/photonstorm/phaser
synced 2024-11-24 05:33:35 +00:00
PVR, DDS, KTX and PKM parsing implemented on LoaderParser.js
This commit is contained in:
Felipe Alfonso
parent
f68f454620
commit
08ec080f67
1 changed files with 247 additions and 0 deletions
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@ -164,4 +164,251 @@ Phaser.LoaderParser = {
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return bitmapFontData;
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}
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/**
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* Extract PVR header from loaded binary
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*
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* @method Phaser.LoaderParser.parsePVR
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* @param {ArrayBuffer} arrayBuffer - The BaseTexture this font uses.
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* @return {object} The parsed PVR file including texture data.
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*/
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parsePVR: function (arrayBuffer) {
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// Reference: http://cdn.imgtec.com/sdk-documentation/PVR+File+Format.Specification.pdf
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// PVR 3 header structure
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// ---------------------------------------
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// address: 0, size: 4 bytes version
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// address: 4, size: 4 bytes flags
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// address: 8, size: 8 bytes pixel format
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// address: 16, size: 4 bytes color space
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// address: 20, size: 4 bytes channel type
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// address: 24, size: 4 bytes height
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// address: 28, size: 4 bytes width
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// address: 32, size: 4 bytes depth
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// address: 36, size: 4 bytes number of surfaces
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// address: 40, size: 4 bytes number of faces
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// address: 44, size: 4 bytes number of mipmaps
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// address: 48, size: 4 bytes meta data size
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// ---------------------------------------
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var uintArray = new Uint32Array(arrayBuffer.slice(0, 52)),
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byteArray = new Uint8Array(arrayBuffer),
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pvrHeader = null,
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pixelFormat = (uintArray[3] << 32 | uintArray[2]);
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if (uintArray[0] === 0x03525650 &&
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[ // Validate WebGL Pixel Format
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0, 1, 2, 3,
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6, 7, 9, 11
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].indexOf(pixelFormat) >= 0
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) {
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pvrHeader = {
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flags: uintArray[1],
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pixelFormat: pixelFormat,
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colorSpace: uintArray[4],
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channelType: uintArray[5],
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height: uintArray[6],
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width: uintArray[7],
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depth: uintArray[8],
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numberOfSurfaces: uintArray[9],
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numberOfFaces: uintArray[10],
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numberOfMipmaps: uintArray[11],
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metaDataSize: uintArray[12],
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textureData: byteArray.subarray(52 + uintArray[12], byteArray.byteLength)
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};
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}
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return pvrHeader;
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},
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/**
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* Extract DDS header from loaded binary
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*
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* @method Phaser.LoaderParser.parseDDS
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* @param {ArrayBuffer} arrayBuffer - The BaseTexture this font uses.
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* @return {object} The parsed DDS file including texture data.
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*/
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parseDDS: function (arrayBuffer) {
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// Reference at: https://msdn.microsoft.com/en-us/library/windows/desktop/bb943982(v=vs.85).aspx
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// DDS header structure
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// ---------------------------------------
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// address: 0, size: 4 bytes Identifier 'DDS '
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// address: 4, size: 4 bytes size
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// address: 8, size: 4 bytes flags
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// address: 12, size: 4 bytes height
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// address: 16, size: 4 bytes width
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// address: 20, size: 4 bytes pitch or linear size
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// address: 24, size: 4 bytes depth
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// address: 28, size: 4 bytes mipmap count
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// address: 32, size: 44 bytes reserved space 1
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// address: 76, size: 4 pixel format size
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// address: 80, size: 4 pixel format flag
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// address: 84, size: 4 pixel format four CC
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// address: 88, size: 4 pixel format bit count
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// address: 92, size: 4 pixel format R bit mask
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// address: 96, size: 4 pixel format G bit mask
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// address: 100, size: 4 pixel format B bit mask
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// address: 104, size: 4 pixel format A bit mask
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// address: 108, size: 4 caps 1
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// address: 112, size: 4 caps 2
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// address: 116, size: 4 caps 3
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// address: 120, size: 4 caps 4
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// address: 124, size: 4 reserved 2
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// -- DXT10 extension
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// address: 130, size: 4 DXGI Format
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// address: 134, size: 4 resource dimension
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// address: 138, size: 4 misc flag
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// address: 142, size: 4 array size
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// address: 146, size: 4 misc flag 2
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// ---------------------------------------
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var byteArray = new Uint8Array(arrayBuffer),
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uintArray = new Uint32Array(arrayBuffer),
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ddsHeader = null;
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if (byteArray[0] === 0x44 &&
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byteArray[1] === 0x44 &&
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byteArray[2] === 0x53 &&
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byteArray[3] === 0x20) {
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ddsHeader = {
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size: uintArray[1],
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flags: uintArray[2],
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height: uintArray[3],
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width: uintArray[4],
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pitch: uintArray[5],
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depth: uintArray[6],
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mipmapCount: uintArray[7],
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formatSize: uintArray[19],
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formatFlag: uintArray[19],
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formatFourCC: [
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String.fromCharCode(byteArray[84]),
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String.fromCharCode(byteArray[85]),
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String.fromCharCode(byteArray[86]),
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String.fromCharCode(byteArray[87])
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].join(''),
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formatBitCount: uintArray[21],
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formatRBitMask: uintArray[22],
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formatGBitMask: uintArray[23],
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formatBBitMask: uintArray[24],
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formatABitMask: uintArray[25],
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caps1: uintArray[26],
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caps2: uintArray[27],
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caps3: uintArray[28],
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caps4: uintArray[29],
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reserved2: uintArray[30],
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DXGIFormat: null,
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resourceDimension: null,
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miscFlag: null,
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arraySize: null,
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textureData: byteArray.subarray(uintArray[1] + 4, byteArray.byteLength)
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};
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if (ddsHeader.formatFourCC === 'DX10') {
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ddsHeader.DXGIFormat = uintArray[31];
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ddsHeader.resourceDimension = uintArray[32];
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ddsHeader.miscFlag = uintArray[33];
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ddsHeader.arraySize = uintArray[34];
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ddsHeader.miscFlag = uintArray[35];
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}
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}
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return ddsHeader;
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},
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/**
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* Extract KTX header from loaded binary
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*
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* @method Phaser.LoaderParser.parseKTX
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* @param {ArrayBuffer} arrayBuffer - The BaseTexture this font uses.
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* @return {object} The parsed KTX file including texture data.
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*/
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parseKTX: function (arrayBuffer) {
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// Reference: https://www.khronos.org/opengles/sdk/tools/KTX/file_format_spec/
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// KTX header structure
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// ---------------------------------------
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// address: 0, size 12 bytes: Identifier '«KTX 11»\r\n\x1A\n'
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// address: 12, size 4 bytes: endianness
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// address: 16, size 4 bytes: GL type
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// address: 20, size 4 bytes: GL type size
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// address: 24, size 4 bytes: GL format
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// address: 28, size 4 bytes: GL internal format
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// address: 32, size 4 bytes: GL base internal format
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// address: 36, size 4 bytes: pixel width
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// address: 40, size 4 bytes: pixel height
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// address: 44, size 4 bytes: pixel depth
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// address: 48, size 4 bytes: number of array elements
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// address: 52, size 4 bytes: number of faces
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// address: 56, size 4 bytes: number of mipmap levels
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// address: 60, size 4 bytes: bytes of key value data
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// address: 64, size 4 bytes: key and value bytes size
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// address: X, size 1 byte : key and value
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// address: X, size 1 byte : value padding
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// address: X, size 4 byte : image size
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// ---------------------------------------
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var byteArray = new Uint8Array(arrayBuffer),
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uintArray = new Uint32Array(arrayBuffer),
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ktxHeader = null,
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imageSizeOffset = 16 + (uintArray[15] / 4) | 0,
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imageSize = uintArray[imageSizeOffset];
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if (byteArray[0] === 0xAB && byteArray[1] === 0x4B &&
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byteArray[2] === 0x54 && byteArray[3] === 0x58 &&
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byteArray[4] === 0x20 && byteArray[5] === 0x31 &&
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byteArray[6] === 0x31 && byteArray[7] === 0xBB &&
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byteArray[8] === 0x0D && byteArray[9] === 0x0A &&
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byteArray[10] === 0x1A && byteArray[11] === 0x0A &&
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//Check if internal GL format is ETC1_RGB8_OES
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uintArray[7] === 0x8D64) {
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ktxHeader = {
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endianness: uintArray[3],
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glType: uintArray[4],
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glTypeSize: uintArray[5],
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glFormat: uintArray[6],
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glInternalFormat: uintArray[7],
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glBaseInternalFormat: uintArray[8],
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pixelWidth: uintArray[9],
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pixelHeight: uintArray[10],
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pixelDepth: uintArray[11],
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numberOfArrayElements: uintArray[12],
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numberOfFaces: uintArray[13],
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numberOfMipmapLevels: uintArray[14],
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bytesOfKeyValueData: uintArray[15],
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keyAndValueByteSize: uintArray[16],
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imageSize: imageSize,
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textureData: byteArray.subarray((imageSizeOffset + 1) * 4, imageSize + 100)
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};
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}
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return ktxHeader;
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},
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/**
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* Extract PKM header from loaded binary
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*
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* @method Phaser.LoaderParser.parsePKM
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* @param {ArrayBuffer} arrayBuffer - The BaseTexture this font uses.
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* @return {object} The parsed PKM file including texture data.
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*/
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parsePKM: function (arrayBuffer) {
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// PKM header structure
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// ---------------------------------------
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// address: 0, size 4 bytes: for 'PKM '
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// address: 4, size 2 bytes: for version
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// address: 6, size 2 bytes: for type
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// address: 8, size 2 bytes: for extended width
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// address: 10, size 2 bytes: for extended height
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// address: 12, size 2 bytes: for original width
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// address: 14, size 2 bytes: for original height
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// address: 16, texture data
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// ---------------------------------------
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var byteArray = new Uint8Array(arrayBuffer),
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pkmHeader = null;
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if (byteArray[0] === 0x50 &&
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byteArray[1] === 0x4B &&
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byteArray[2] === 0x4D &&
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byteArray[3] === 0x20) {
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pkmHeader = {
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format: ((byteArray[6] << 8 | byteArray[7])) & 0xFFFF,
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extendedWidth: ((byteArray[8] << 8 | byteArray[9])) & 0xFFFF,
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extendedHeight: ((byteArray[10] << 8 | byteArray[11])) & 0xFFFF,
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originalWidth: ((byteArray[12] << 8 | byteArray[13])) & 0xFFFF,
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originalHeight: ((byteArray[14] << 8 | byteArray[15])) & 0xFFFF,
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textureData: byteArray.subarray(16, byteArray.length)
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};
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}
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return pkmHeader;
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}
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};
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