Avoid copying memory for contingous buffers.
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@ -40,6 +40,11 @@ namespace StardewModdingAPI.Framework.Content
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this.GetPatchBounds(ref sourceArea, ref targetArea, source.Width, source.Height);
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// check to see if the Data is sufficiently long.
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// while SMAPI's impl is going to be, it's not necessarily the case for mod impl.
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if (source.Data.Length < (sourceArea.Value.Bottom - 1) * source.Width + sourceArea.Value.Right)
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throw new ArgumentException("Source data insufficiently long for this operation.");
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// get the pixels for the source area
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Color[] sourceData;
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{
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@ -48,30 +53,18 @@ namespace StardewModdingAPI.Framework.Content
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int areaWidth = sourceArea.Value.Width;
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int areaHeight = sourceArea.Value.Height;
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if (areaX == 0 && areaY == 0 && areaWidth == source.Width && areaHeight <= source.Height)
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if (areaWidth == source.Width)
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{
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// It's actually fine if the source is taller than the sourceArea
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// the "extra" bits on the end of the array can just be ignored.
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sourceData = source.Data;
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this.PatchImageImpl(sourceData, areaWidth, areaHeight, sourceArea.Value, targetArea.Value, patchMode);
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this.PatchImageImpl(sourceData, source.Width, source.Height, sourceArea.Value, targetArea.Value, patchMode, areaY);
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}
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else
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{
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int pixelCount = areaWidth * areaHeight;
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sourceData = ArrayPool<Color>.Shared.Rent(pixelCount);
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if (areaX == 0 && areaWidth == source.Width)
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{
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// shortcut copying because the area to copy is contiguous. This is
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// probably uncommon, but Array.Copy benefits a lot.
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int sourceIndex = areaY * areaWidth;
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int targetIndex = 0;
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Array.Copy(source.Data, sourceIndex, sourceData, targetIndex, pixelCount);
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}
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else
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{
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// slower copying, line by line
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for (int y = areaY, maxY = areaY + areaHeight; y < maxY; y++)
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{
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@ -79,7 +72,6 @@ namespace StardewModdingAPI.Framework.Content
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int targetIndex = (y - areaY) * areaWidth;
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Array.Copy(source.Data, sourceIndex, sourceData, targetIndex, areaWidth);
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}
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}
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// apply
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this.PatchImageImpl(sourceData, source.Width, source.Height, sourceArea.Value, targetArea.Value, patchMode);
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@ -150,10 +142,11 @@ namespace StardewModdingAPI.Framework.Content
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/// <param name="sourceArea">The part of the <paramref name="sourceData"/> to copy (or <c>null</c> to take the whole texture). This must be within the bounds of the <paramref name="sourceData"/> texture.</param>
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/// <param name="targetArea">The part of the content to patch (or <c>null</c> to patch the whole texture). The original content within this area will be erased. This must be within the bounds of the existing spritesheet.</param>
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/// <param name="patchMode">Indicates how an image should be patched.</param>
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/// <param name="startRow">The row to start on, for the sourceData.</param>
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/// <exception cref="ArgumentNullException">One of the arguments is null.</exception>
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/// <exception cref="ArgumentOutOfRangeException">The <paramref name="targetArea"/> is outside the bounds of the spritesheet.</exception>
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/// <exception cref="InvalidOperationException">The content being read isn't an image.</exception>
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private void PatchImageImpl(Color[] sourceData, int sourceWidth, int sourceHeight, Rectangle sourceArea, Rectangle targetArea, PatchMode patchMode)
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private void PatchImageImpl(Color[] sourceData, int sourceWidth, int sourceHeight, Rectangle sourceArea, Rectangle targetArea, PatchMode patchMode, int startRow = 0)
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{
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// get texture
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Texture2D target = this.Data;
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@ -168,7 +161,7 @@ namespace StardewModdingAPI.Framework.Content
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throw new InvalidOperationException("The source and target areas must be the same size.");
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if (patchMode == PatchMode.Replace)
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target.SetData(0, targetArea, sourceData, 0, pixelCount);
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target.SetData(0, targetArea, sourceData, startRow * sourceArea.Width, pixelCount);
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else
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{
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// merge data
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@ -177,7 +170,7 @@ namespace StardewModdingAPI.Framework.Content
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// Adjusting bounds to ignore transparent pixels at the start and end.
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int startIndex = -1;
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for (int i = 0; i < pixelCount; i++)
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for (int i = startRow * sourceArea.Width; i < pixelCount; i++)
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{
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if (sourceData[i].A >= MinOpacity)
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{
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