338 lines
16 KiB
C#
338 lines
16 KiB
C#
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using System;
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using System.Collections.Generic;
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using Unity.Burst;
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using Unity.Collections;
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using Unity.Collections.LowLevel.Unsafe;
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using Unity.Jobs;
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using Unity.Mathematics;
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using UnityEngine;
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namespace UnityEditor.U2D.PSD
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{
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internal static class ExtractLayerTask
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{
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struct LayerGroupData
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{
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public int startIndex { get; set; }
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public int endIndex { get; set; }
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/// <summary>
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/// The layer's bounding box in document space.
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/// </summary>
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public int4 documentRect { get; set; }
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}
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[BurstCompile]
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struct ConvertBufferJob : IJobParallelFor
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{
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[ReadOnly, DeallocateOnJobCompletion]
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public NativeArray<int> inputTextureBufferSizes;
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[ReadOnly, DeallocateOnJobCompletion]
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public NativeArray<IntPtr> inputTextures;
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[ReadOnly, DeallocateOnJobCompletion]
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public NativeArray<int4> inputLayerRects;
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[ReadOnly, DeallocateOnJobCompletion]
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public NativeArray<LayerGroupData> layerGroupDataData;
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[ReadOnly, DeallocateOnJobCompletion]
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public NativeArray<int4> outputLayerRect;
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[DeallocateOnJobCompletion]
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public NativeArray<IntPtr> outputTextures;
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public unsafe void Execute(int groupIndex)
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{
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Color32* outputColor = (Color32*)outputTextures[groupIndex];
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int groupStartIndex = layerGroupDataData[groupIndex].startIndex;
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int groupEndIndex = layerGroupDataData[groupIndex].endIndex;
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int outStartX = outputLayerRect[groupIndex].x;
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int outStartY = outputLayerRect[groupIndex].y;
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int outWidth = outputLayerRect[groupIndex].z;
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int outHeight = outputLayerRect[groupIndex].w;
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for (int layerIndex = groupEndIndex; layerIndex >= groupStartIndex; --layerIndex)
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{
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if (inputTextures[layerIndex] == IntPtr.Zero)
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continue;
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Color32* inputColor = (Color32*)inputTextures[layerIndex];
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int inX = inputLayerRects[layerIndex].x;
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int inY = inputLayerRects[layerIndex].y;
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int inWidth = inputLayerRects[layerIndex].z;
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int inHeight = inputLayerRects[layerIndex].w;
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for (int y = 0; y < inHeight; ++y)
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{
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int outPosY = (y + inY) - outStartY;
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// If pixel is outside of output texture's Y, move to the next pixel.
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if (outPosY < 0 || outPosY >= outHeight)
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continue;
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// Flip Y position on the input texture, because
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// PSDs textures are stored "upside-down"
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int inRow = ((inHeight - 1) - y) * inWidth;
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int outRow = outPosY * outWidth;
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for (int x = 0; x < inWidth; ++x)
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{
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int outPosX = (x + inX) - outStartX;
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// If pixel is outside of output texture's X, move to the next pixel.
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if (outPosX < 0 || outPosX >= outWidth)
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continue;
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int inBufferIndex = inRow + x;
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int outBufferIndex = outRow + outPosX;
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if (outBufferIndex < 0 || outBufferIndex > (outWidth * outHeight))
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continue;
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Color inColor = inputColor[inBufferIndex];
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Color prevOutColor = outputColor[outBufferIndex];
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Color outColor = new Color();
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float destAlpha = prevOutColor.a * (1 - inColor.a);
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outColor.a = inColor.a + prevOutColor.a * (1 - inColor.a);
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float premultiplyAlpha = outColor.a > 0.0f ? 1 / outColor.a : 1f;
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outColor.r = (inColor.r * inColor.a + prevOutColor.r * destAlpha) * premultiplyAlpha;
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outColor.g = (inColor.g * inColor.a + prevOutColor.g * destAlpha) * premultiplyAlpha;
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outColor.b = (inColor.b * inColor.a + prevOutColor.b * destAlpha) * premultiplyAlpha;
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outputColor[outBufferIndex] = outColor;
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}
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}
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}
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}
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}
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public static unsafe void Execute(in PSDExtractLayerData[] psdExtractLayerData, out List<PSDLayer> outputLayers, bool importHiddenLayer, Vector2Int canvasSize)
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{
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outputLayers = new List<PSDLayer>();
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UnityEngine.Profiling.Profiler.BeginSample("ExtractLayer_PrepareJob");
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List<PSDLayer> inputLayers = new List<PSDLayer>();
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ExtractLayerData(in psdExtractLayerData, ref inputLayers, importHiddenLayer, false, true, canvasSize);
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List<LayerGroupData> layerGroupData = new List<LayerGroupData>();
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GenerateOutputLayers(in inputLayers, ref outputLayers, ref layerGroupData, false, canvasSize);
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if (layerGroupData.Count == 0)
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{
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foreach (PSDLayer layer in outputLayers)
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layer.texture = default;
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return;
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}
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ConvertBufferJob job = new ConvertBufferJob();
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job.inputTextureBufferSizes = new NativeArray<int>(inputLayers.Count, Allocator.TempJob);
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job.inputTextures = new NativeArray<IntPtr>(inputLayers.Count, Allocator.TempJob);
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job.inputLayerRects = new NativeArray<int4>(inputLayers.Count, Allocator.TempJob);
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job.outputLayerRect = new NativeArray<int4>(layerGroupData.Count, Allocator.TempJob);
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job.outputTextures = new NativeArray<IntPtr>(layerGroupData.Count, Allocator.TempJob);
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for (int i = 0, groupIndex = 0; i < inputLayers.Count; ++i)
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{
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PSDLayer inputLayer = inputLayers[i];
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PSDLayer outputLayer = outputLayers[i];
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job.inputTextures[i] = inputLayer.texture.IsCreated ? new IntPtr(inputLayer.texture.GetUnsafePtr()) : IntPtr.Zero;
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bool isGroupOwner = groupIndex < layerGroupData.Count && layerGroupData[groupIndex].startIndex == i;
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if (isGroupOwner)
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{
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outputLayer.texture = new NativeArray<Color32>(outputLayer.width * outputLayer.height, Allocator.Persistent);
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job.outputLayerRect[groupIndex] = new int4((int)outputLayer.layerPosition.x, (int)outputLayer.layerPosition.y, outputLayer.width, outputLayer.height);
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job.outputTextures[groupIndex] = outputLayer.texture.IsCreated ? new IntPtr(outputLayer.texture.GetUnsafePtr()) : IntPtr.Zero;
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job.inputTextureBufferSizes[i] = inputLayer.texture.IsCreated ? inputLayer.texture.Length : -1;
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job.inputLayerRects[i] = layerGroupData[groupIndex].documentRect;
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++groupIndex;
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}
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else
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{
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job.inputTextureBufferSizes[i] = inputLayer.texture.IsCreated ? inputLayer.texture.Length : -1;
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job.inputLayerRects[i] = new int4((int)inputLayer.layerPosition.x, (int)inputLayer.layerPosition.y, inputLayer.width, inputLayer.height);
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outputLayer.texture = default;
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}
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}
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job.layerGroupDataData = new NativeArray<LayerGroupData>(layerGroupData.ToArray(), Allocator.TempJob);
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int jobsPerThread = layerGroupData.Count / (SystemInfo.processorCount == 0 ? 8 : SystemInfo.processorCount);
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jobsPerThread = Mathf.Max(jobsPerThread, 1);
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JobHandle handle = job.Schedule(layerGroupData.Count, jobsPerThread);
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UnityEngine.Profiling.Profiler.EndSample();
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handle.Complete();
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}
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static void ExtractLayerData(in PSDExtractLayerData[] inputLayers, ref List<PSDLayer> extractedLayers, bool importHiddenLayer, bool flatten, bool parentGroupVisible, Vector2Int canvasSize)
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{
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int parentGroupIndex = extractedLayers.Count - 1;
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foreach (PSDExtractLayerData inputLayer in inputLayers)
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{
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PDNWrapper.BitmapLayer bitmapLayer = inputLayer.bitmapLayer;
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PSDLayerImportSetting importSettings = inputLayer.importSetting;
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bool layerVisible = bitmapLayer.Visible && parentGroupVisible;
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RectInt layerRect = new RectInt(bitmapLayer.documentRect.X, bitmapLayer.documentRect.Y, bitmapLayer.Surface.width, bitmapLayer.Surface.height);
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if (!bitmapLayer.IsGroup)
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layerRect.y = (canvasSize.y - layerRect.y - layerRect.height);
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NativeArray<Color32> surface = default;
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if ((importHiddenLayer || bitmapLayer.Visible) &&
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importSettings.importLayer &&
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bitmapLayer.Surface.color.IsCreated &&
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bitmapLayer.Surface.color.Length > 0)
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surface = bitmapLayer.Surface.color;
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PSDLayer extractedLayer = new PSDLayer(surface, parentGroupIndex, bitmapLayer.IsGroup, bitmapLayer.Name, layerRect.width, layerRect.height, bitmapLayer.LayerID, bitmapLayer.Visible)
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{
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spriteID = inputLayer.importSetting.spriteId,
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flatten = bitmapLayer.IsGroup && inputLayer.importSetting.flatten,
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layerPosition = bitmapLayer.IsGroup ? Vector2.zero : layerRect.position
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};
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extractedLayer.isImported = (importHiddenLayer || layerVisible) && !flatten && importSettings.importLayer;
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if (extractedLayer.isGroup)
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extractedLayer.isImported = extractedLayer.isImported && extractedLayer.flatten;
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extractedLayers.Add(extractedLayer);
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if (inputLayer.children.Length > 0)
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ExtractLayerData(in inputLayer.children, ref extractedLayers, importHiddenLayer, flatten || extractedLayer.flatten, layerVisible, canvasSize);
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}
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}
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static void GenerateOutputLayers(in List<PSDLayer> inputLayers, ref List<PSDLayer> outputLayers, ref List<LayerGroupData> layerGroupData, bool flatten, Vector2Int canvasSize)
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{
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RectInt canvasRect = new RectInt(Vector2Int.zero, canvasSize);
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for (int i = 0; i < inputLayers.Count; ++i)
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{
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PSDLayer inputLayer = inputLayers[i];
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PSDLayer outputLayer = new PSDLayer(inputLayer);
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RectInt outputRect = new RectInt((int)outputLayer.layerPosition.x, (int)outputLayer.layerPosition.y, outputLayer.width, outputLayer.height);
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if (inputLayer.isGroup)
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{
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List<int> childIndices = FindAllChildrenOfParent(i, in inputLayers);
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childIndices.Sort();
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int startIndex = i;
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int endIndex = i + childIndices.Count;
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if (flatten == false && inputLayer.flatten && startIndex < endIndex)
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{
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RectInt groupBoundingBox = CalculateLayerRectInChildren(in inputLayers, in childIndices);
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layerGroupData.Add(new LayerGroupData()
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{
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startIndex = startIndex,
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endIndex = endIndex,
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documentRect = new int4(groupBoundingBox.x, groupBoundingBox.y, groupBoundingBox.width, groupBoundingBox.height)
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});
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outputLayer.texture = default;
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outputRect = groupBoundingBox;
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}
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}
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else if (!inputLayer.isGroup && inputLayer.isImported)
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{
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int4 inputRect = new int4((int)inputLayer.layerPosition.x, (int)inputLayer.layerPosition.y, inputLayer.width, inputLayer.height);
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layerGroupData.Add(new LayerGroupData()
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{
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startIndex = i,
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endIndex = i,
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documentRect = inputRect
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});
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}
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CropRect(ref outputRect, canvasRect);
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outputLayer.layerPosition = outputRect.position;
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outputLayer.width = outputRect.width;
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outputLayer.height = outputRect.height;
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outputLayers.Add(outputLayer);
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}
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}
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static List<int> FindAllChildrenOfParent(int parentIndex, in List<PSDLayer> layers)
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{
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List<int> childIndices = new List<int>();
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for (int i = parentIndex + 1; i < layers.Count; ++i)
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{
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if (layers[i].parentIndex == parentIndex)
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{
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childIndices.Add(i);
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if (layers[i].isGroup)
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childIndices.AddRange(FindAllChildrenOfParent(i, in layers));
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}
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}
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return childIndices;
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}
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static RectInt CalculateLayerRectInChildren(in List<PSDLayer> inputLayers, in List<int> childIndices)
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{
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RectInt groupBoundingBox = default(RectInt);
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for (int m = 0; m < childIndices.Count; ++m)
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{
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PSDLayer childLayer = inputLayers[childIndices[m]];
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if (childLayer.isGroup)
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continue;
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RectInt layerRect = new RectInt((int)childLayer.layerPosition.x, (int)childLayer.layerPosition.y,
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childLayer.width, childLayer.height);
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if (IsRectIntDefault(groupBoundingBox))
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groupBoundingBox = layerRect;
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else
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FitRectInsideRect(ref groupBoundingBox, in layerRect);
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}
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return groupBoundingBox;
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}
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static bool IsRectIntDefault(RectInt rectInt)
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{
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return rectInt.x == 0 &&
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rectInt.y == 0 &&
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rectInt.width == 0 &&
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rectInt.height == 0;
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}
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static void CropRect(ref RectInt baseRect, in RectInt cropArea)
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{
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if (baseRect.x < cropArea.x)
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{
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baseRect.width = Mathf.Max(baseRect.width - (cropArea.x - baseRect.x), 0);
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baseRect.x = cropArea.x;
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}
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if (baseRect.xMax > cropArea.xMax)
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{
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baseRect.x = Mathf.Min(baseRect.x, cropArea.xMax);
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baseRect.width = Mathf.Max(cropArea.xMax - baseRect.x, 0);
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}
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if (baseRect.y < cropArea.y)
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{
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baseRect.height = Mathf.Max(baseRect.height - (cropArea.y - baseRect.y), 0);
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baseRect.y = cropArea.y;
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}
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if (baseRect.yMax > cropArea.yMax)
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{
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baseRect.y = Mathf.Min(baseRect.y, cropArea.yMax);
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baseRect.height = Mathf.Max(cropArea.yMax - baseRect.y, 0);
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}
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}
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static void FitRectInsideRect(ref RectInt baseRect, in RectInt rectToFitIn)
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{
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if (baseRect.xMin > rectToFitIn.xMin)
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baseRect.xMin = rectToFitIn.xMin;
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if (baseRect.yMin > rectToFitIn.yMin)
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baseRect.yMin = rectToFitIn.yMin;
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if (baseRect.xMax < rectToFitIn.xMax)
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baseRect.xMax = rectToFitIn.xMax;
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if (baseRect.yMax < rectToFitIn.yMax)
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baseRect.yMax = rectToFitIn.yMax;
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}
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}
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}
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