/// <summary> /// Generate one big texture where all textures are presented. /// </summary> void GenerateFallbackImage(BuildContext buildContext, VTTextureTable pageTable, int sourceMipLevel, IStorage storage) { int pageSize = VTConfig.PageSize; int numPages = VTConfig.VirtualPageCount >> sourceMipLevel; int fallbackSize = VTConfig.TextureSize >> sourceMipLevel; Image fallbackImage = new Image(fallbackSize, fallbackSize, Color.Black); for (int pageX = 0; pageX < numPages; pageX++) { for (int pageY = 0; pageY < numPages; pageY++) { var addr = new VTAddress(pageX, pageY, sourceMipLevel); var image = pageTable.LoadPage(addr, storage); for (int x = 0; x < pageSize; x++) { for (int y = 0; y < pageSize; y++) { int u = pageX * pageSize + x; int v = pageY * pageSize + y; fallbackImage.Write(u, v, image.Sample(x, y)); } } } } Image.SaveTga(fallbackImage, storage.OpenWrite("fallback.tga")); }
/// <summary> /// /// </summary> /// <param name="context"></param> /// <param name="pageTable"></param> public void SplitIntoPages(BuildContext context, VTTextureTable pageTable, IStorage storage) { var pageSize = VTConfig.PageSize; var pageSizeBorder = VTConfig.PageSizeBordered; var border = VTConfig.PageBorderWidth; var colorMap = LoadTexture(BaseColor, Color.Gray); var normalMap = LoadTexture(NormalMap, Color.FlatNormals); var roughness = LoadTexture(Roughness, Color.Black); var metallic = LoadTexture(Metallic, Color.Black); var emission = LoadTexture(Emission, Color.Black); var pageCountX = colorMap.Width / pageSize; var pageCountY = colorMap.Height / pageSize; for (int x = 0; x < pageCountX; x++) { for (int y = 0; y < pageCountY; y++) { var pageC = new Image(pageSizeBorder, pageSizeBorder); var pageN = new Image(pageSizeBorder, pageSizeBorder); var pageS = new Image(pageSizeBorder, pageSizeBorder); for (int i = 0; i < pageSizeBorder; i++) { for (int j = 0; j < pageSizeBorder; j++) { int srcX = x * pageSize + i - border; int srcY = y * pageSize + j - border; var c = colorMap.SampleClamp(srcX, srcY); var n = normalMap.SampleClamp(srcX, srcY); var r = roughness.SampleClamp(srcX, srcY).R; var m = metallic.SampleClamp(srcX, srcY).R; var e = emission.SampleClamp(srcX, srcY).R; pageC.Write(i, j, c); pageN.Write(i, j, n); pageS.Write(i, j, new Color(r, m, e, (byte)255)); } } var address = new VTAddress((short)(x + AddressX), (short)(y + AddressY), 0); var tile = new VTTile(address, pageC, pageN, pageS); pageTable.SaveTile(address, storage, tile); } } }
/// <summary> /// /// </summary> /// <param name="textures"></param> void RepackTextureAtlas(VTTextureTable vtexTable, Allocator2D allocator, DateTime targetWriteTime) { // // remove deleted and changes textures from allocator : // var blockInfo = allocator.GetAllocatedBlockInfo(); foreach (var block in blockInfo) { if (!vtexTable.Contains(block.Tag)) { Log.Message("...removed: {0}", block.Tag); allocator.Free(block.Address); } else { if (vtexTable[block.Tag].IsModified(targetWriteTime)) { Log.Message("...changed: {0}", block.Tag); allocator.Free(block.Address); } } } // // add missing textures (note, changed are already removed). // var blockDictionary = allocator.GetAllocatedBlockInfo().ToDictionary(bi => bi.Tag); var newTextureList = new List <VTTexture>(); foreach (var tex in vtexTable.SourceTextures) { Allocator2D.BlockInfo bi; if (blockDictionary.TryGetValue(tex.Name, out bi)) { tex.TexelOffsetX = bi.Address.X * VTConfig.PageSize; tex.TexelOffsetY = bi.Address.Y * VTConfig.PageSize; } else { newTextureList.Add(tex); } } PackTextureAtlas(newTextureList, allocator); }
/// <summary> /// Creates VT tex table from INI-data and base directory /// </summary> /// <param name="iniData"></param> /// <param name="baseDirectory"></param> /// <returns></returns> VTTextureTable CreateVTTextureTable(IEnumerable <string> xmlFilePaths, BuildContext context, IStorage tileStorage) { var texTable = new VTTextureTable(); foreach (var xmlFile in xmlFilePaths) { using (var stream = File.OpenRead(xmlFile)) { var name = Path.GetFileNameWithoutExtension(xmlFile); var content = (VTTextureContent)Misc.LoadObjectFromXml(typeof(VTTextureContent), stream); var writeTime = File.GetLastWriteTimeUtc(xmlFile); if (content.SkipProcessing) { continue; } var tex = new VTTexture(content, name, context, writeTime); texTable.AddTexture(tex); } } return(texTable); }
/// <summary> /// Generates mip levels for all tiles. /// </summary> /// <param name="buildContext"></param> /// <param name="pageTable"></param> /// <param name="sourceMipLevel"></param> /// <param name="mapStorage"></param> void GenerateMipLevels(BuildContext buildContext, VTTextureTable pageTable, int sourceMipLevel, IStorage mapStorage) { if (sourceMipLevel >= VTConfig.MipCount) { throw new ArgumentOutOfRangeException("mipLevel"); } //int count = VTConfig.VirtualPageCount >> sourceMipLevel; int sizeB = VTConfig.PageSizeBordered; var cache = new TileSamplerCache(mapStorage); foreach (var vttex in pageTable.SourceTextures) { if (!vttex.TilesDirty) { continue; } int startX = RoundDown2(vttex.AddressX, sourceMipLevel); int startY = RoundDown2(vttex.AddressY, sourceMipLevel); int wTiles = (vttex.Width / VTConfig.PageSize); int hTiles = (vttex.Width / VTConfig.PageSize); int endExX = RoundUp2(vttex.AddressX + wTiles, sourceMipLevel); int endExY = RoundUp2(vttex.AddressY + hTiles, sourceMipLevel); for (int pageX = startX; pageX < endExX; pageX += 2) { for (int pageY = startY; pageY < endExY; pageY += 2) { var address00 = new VTAddress(pageX + 0, pageY + 0, sourceMipLevel); var address01 = new VTAddress(pageX + 0, pageY + 1, sourceMipLevel); var address10 = new VTAddress(pageX + 1, pageY + 0, sourceMipLevel); var address11 = new VTAddress(pageX + 1, pageY + 1, sourceMipLevel); // there are no images touching target mip-level. // NOTE: we can skip images that are touched by border. //if ( !pageTable.IsAnyExists( address00, address01, address10, address11 ) ) { // continue; //} var address = new VTAddress(pageX / 2, pageY / 2, sourceMipLevel + 1); var tile = new VTTile(address); var offsetX = (pageX) * VTConfig.PageSize; var offsetY = (pageY) * VTConfig.PageSize; var border = VTConfig.PageBorderWidth; var colorValue = Color.Zero; var normalValue = Color.Zero; var specularValue = Color.Zero; for (int x = 0; x < sizeB; x++) { for (int y = 0; y < sizeB; y++) { int srcX = offsetX + x * 2 - border * 2; int srcY = offsetY + y * 2 - border * 2; SampleMegatextureQ4(cache, srcX, srcY, sourceMipLevel, ref colorValue, ref normalValue, ref specularValue); tile.SetValues(x, y, ref colorValue, ref normalValue, ref specularValue); } } pageTable.SaveTile(address, mapStorage, tile); } } } }
/// <summary> /// Split textures on tiles. /// </summary> /// <param name="textures"></param> void GenerateMostDetailedPages(ICollection <VTTexture> textures, BuildContext context, VTTextureTable pageTable, IStorage mapStorage) { int totalCount = textures.Count; int counter = 0; foreach (var texture in textures) { if (texture.TilesDirty) { Log.Message("...{0}/{1} - {2}", counter, totalCount, texture.Name); texture.SplitIntoPages(context, pageTable, mapStorage); counter++; } } }