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@@ -1,220 +0,0 @@
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-var BABYLON = BABYLON || {};
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-
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-(function () {
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- BABYLON.Tools = BABYLON.Tools || {};
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-
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- // Based on https://github.com/toji/webgl-texture-utils/blob/master/texture-util/dds.js
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-
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- // All values and structures referenced from:
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- // http://msdn.microsoft.com/en-us/library/bb943991.aspx/
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- var DDS_MAGIC = 0x20534444;
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-
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- var DDSD_CAPS = 0x1,
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- DDSD_HEIGHT = 0x2,
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- DDSD_WIDTH = 0x4,
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- DDSD_PITCH = 0x8,
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- DDSD_PIXELFORMAT = 0x1000,
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- DDSD_MIPMAPCOUNT = 0x20000,
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- DDSD_LINEARSIZE = 0x80000,
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- DDSD_DEPTH = 0x800000;
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-
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- var DDSCAPS_COMPLEX = 0x8,
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- DDSCAPS_MIPMAP = 0x400000,
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- DDSCAPS_TEXTURE = 0x1000;
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-
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- var DDSCAPS2_CUBEMAP = 0x200,
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- DDSCAPS2_CUBEMAP_POSITIVEX = 0x400,
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- DDSCAPS2_CUBEMAP_NEGATIVEX = 0x800,
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- DDSCAPS2_CUBEMAP_POSITIVEY = 0x1000,
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- DDSCAPS2_CUBEMAP_NEGATIVEY = 0x2000,
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- DDSCAPS2_CUBEMAP_POSITIVEZ = 0x4000,
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- DDSCAPS2_CUBEMAP_NEGATIVEZ = 0x8000,
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- DDSCAPS2_VOLUME = 0x200000;
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-
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- var DDPF_ALPHAPIXELS = 0x1,
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- DDPF_ALPHA = 0x2,
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- DDPF_FOURCC = 0x4,
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- DDPF_RGB = 0x40,
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- DDPF_YUV = 0x200,
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- DDPF_LUMINANCE = 0x20000;
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-
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- function fourCCToInt32(value) {
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- return value.charCodeAt(0) +
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- (value.charCodeAt(1) << 8) +
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- (value.charCodeAt(2) << 16) +
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- (value.charCodeAt(3) << 24);
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- }
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-
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- function int32ToFourCC(value) {
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- return String.fromCharCode(
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- value & 0xff,
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- (value >> 8) & 0xff,
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- (value >> 16) & 0xff,
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- (value >> 24) & 0xff
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- );
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- }
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-
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- var FOURCC_DXT1 = fourCCToInt32("DXT1");
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- var FOURCC_DXT3 = fourCCToInt32("DXT3");
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- var FOURCC_DXT5 = fourCCToInt32("DXT5");
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-
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- var headerLengthInt = 31; // The header length in 32 bit ints
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-
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- // Offsets into the header array
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- var off_magic = 0;
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-
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- var off_size = 1;
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- var off_flags = 2;
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- var off_height = 3;
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- var off_width = 4;
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-
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- var off_mipmapCount = 7;
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-
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- var off_pfFlags = 20;
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- var off_pfFourCC = 21;
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-
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- function dxtToRgb565(src, src16Offset, width, height) {
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- var c = new Uint16Array(4);
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- var dst = new Uint16Array(width * height);
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- var nWords = (width * height) / 4;
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- var m = 0;
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- var dstI = 0;
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- var i = 0;
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- var r0 = 0, g0 = 0, b0 = 0, r1 = 0, g1 = 0, b1 = 0;
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-
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- var blockWidth = width / 4;
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- var blockHeight = height / 4;
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- for (var blockY = 0; blockY < blockHeight; blockY++) {
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- for (var blockX = 0; blockX < blockWidth; blockX++) {
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- i = src16Offset + 4 * (blockY * blockWidth + blockX);
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- c[0] = src[i];
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- c[1] = src[i + 1];
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- r0 = c[0] & 0x1f;
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- g0 = c[0] & 0x7e0;
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- b0 = c[0] & 0xf800;
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- r1 = c[1] & 0x1f;
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- g1 = c[1] & 0x7e0;
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- b1 = c[1] & 0xf800;
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- // Interpolate between c0 and c1 to get c2 and c3.
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- // Note that we approximate 1/3 as 3/8 and 2/3 as 5/8 for
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- // speed. This also appears to be what the hardware DXT
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- // decoder in many GPUs does :)
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- c[2] = ((5 * r0 + 3 * r1) >> 3)
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- | (((5 * g0 + 3 * g1) >> 3) & 0x7e0)
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- | (((5 * b0 + 3 * b1) >> 3) & 0xf800);
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- c[3] = ((5 * r1 + 3 * r0) >> 3)
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- | (((5 * g1 + 3 * g0) >> 3) & 0x7e0)
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- | (((5 * b1 + 3 * b0) >> 3) & 0xf800);
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- m = src[i + 2];
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- dstI = (blockY * 4) * width + blockX * 4;
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- dst[dstI] = c[m & 0x3];
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- dst[dstI + 1] = c[(m >> 2) & 0x3];
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- dst[dstI + 2] = c[(m >> 4) & 0x3];
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- dst[dstI + 3] = c[(m >> 6) & 0x3];
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- dstI += width;
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- dst[dstI] = c[(m >> 8) & 0x3];
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- dst[dstI + 1] = c[(m >> 10) & 0x3];
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- dst[dstI + 2] = c[(m >> 12) & 0x3];
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- dst[dstI + 3] = c[(m >> 14)];
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- m = src[i + 3];
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- dstI += width;
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- dst[dstI] = c[m & 0x3];
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- dst[dstI + 1] = c[(m >> 2) & 0x3];
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- dst[dstI + 2] = c[(m >> 4) & 0x3];
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- dst[dstI + 3] = c[(m >> 6) & 0x3];
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- dstI += width;
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- dst[dstI] = c[(m >> 8) & 0x3];
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- dst[dstI + 1] = c[(m >> 10) & 0x3];
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- dst[dstI + 2] = c[(m >> 12) & 0x3];
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- dst[dstI + 3] = c[(m >> 14)];
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- }
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- }
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- return dst;
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- }
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-
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- function uploadDDSLevels(gl, ext, arrayBuffer) {
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- var header = new Int32Array(arrayBuffer, 0, headerLengthInt),
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- fourCC, blockBytes, internalFormat,
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- width, height, dataLength, dataOffset,
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- rgb565Data, byteArray, mipmapCount, i;
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-
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-
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- if (header[off_magic] != DDS_MAGIC) {
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- console.error("Invalid magic number in DDS header");
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- return 0;
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- }
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-
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- if (!header[off_pfFlags] & DDPF_FOURCC) {
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- console.error("Unsupported format, must contain a FourCC code");
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- return 0;
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- }
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-
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-
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- fourCC = header[off_pfFourCC];
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- switch (fourCC) {
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- case FOURCC_DXT1:
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- blockBytes = 8;
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- internalFormat = ext ? ext.COMPRESSED_RGB_S3TC_DXT1_EXT : null;
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- break;
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-
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-
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- case FOURCC_DXT3:
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- blockBytes = 16;
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- internalFormat = ext ? ext.COMPRESSED_RGBA_S3TC_DXT3_EXT : null;
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- break;
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-
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-
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- case FOURCC_DXT5:
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- blockBytes = 16;
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- internalFormat = ext ? ext.COMPRESSED_RGBA_S3TC_DXT5_EXT : null;
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- break;
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-
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-
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- default:
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- console.error("Unsupported FourCC code:", int32ToFourCC(fourCC));
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- return null;
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- }
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-
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-
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- mipmapCount = 1;
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- if (header[off_flags] & DDSD_MIPMAPCOUNT && loadMipmaps !== false) {
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- mipmapCount = Math.max(1, header[off_mipmapCount]);
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- }
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-
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-
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- width = header[off_width];
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- height = header[off_height];
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- dataOffset = header[off_size] + 4;
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-
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-
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- if (ext) {
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- for (i = 0; i < mipmapCount; ++i) {
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- dataLength = Math.max(4, width) / 4 * Math.max(4, height) / 4 * blockBytes;
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- byteArray = new Uint8Array(arrayBuffer, dataOffset, dataLength);
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- gl.compressedTexImage2D(gl.TEXTURE_2D, i, internalFormat, width, height, 0, byteArray);
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- dataOffset += dataLength;
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- width *= 0.5;
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- height *= 0.5;
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- }
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- } else {
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- if (fourCC == FOURCC_DXT1) {
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- dataLength = Math.max(4, width) / 4 * Math.max(4, height) / 4 * blockBytes;
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- byteArray = new Uint16Array(arrayBuffer);
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- rgb565Data = dxtToRgb565(byteArray, dataOffset / 2, width, height);
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- gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGB, width, height, 0, gl.RGB, gl.UNSIGNED_SHORT_5_6_5, rgb565Data);
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- if (loadMipmaps) {
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- gl.generateMipmap(gl.TEXTURE_2D);
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- }
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- } else {
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- console.error("No manual decoder for", int32ToFourCC(fourCC), "and no native support");
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- return 0;
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- }
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- }
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-
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- return mipmapCount;
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- }
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-
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- BABYLON.Tools.LoadDDSTexture = function(gl, ext, data) {
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- return uploadDDSLevels(gl, ext, data);
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- };
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-})();
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