115 lines
4.0 KiB
C#
115 lines
4.0 KiB
C#
// MonoGame - Copyright (C) The MonoGame Team
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// This file is subject to the terms and conditions defined in
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// file 'LICENSE.txt', which is part of this source code package.
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using System;
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using Microsoft.Xna.Framework.Graphics;
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using ATI.TextureConverter;
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namespace Microsoft.Xna.Framework.Content.Pipeline.Graphics
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{
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public abstract class AtcBitmapContent : BitmapContent
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{
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internal byte[] _bitmapData;
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public AtcBitmapContent()
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: base()
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{
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}
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public AtcBitmapContent(int width, int height)
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: base(width, height)
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{
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}
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public override byte[] GetPixelData()
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{
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return _bitmapData;
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}
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public override void SetPixelData(byte[] sourceData)
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{
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_bitmapData = sourceData;
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}
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protected override bool TryCopyFrom(BitmapContent sourceBitmap, Rectangle sourceRegion, Rectangle destinationRegion)
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{
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SurfaceFormat sourceFormat;
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if (!sourceBitmap.TryGetFormat(out sourceFormat))
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return false;
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SurfaceFormat format;
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TryGetFormat(out format);
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// A shortcut for copying the entire bitmap to another bitmap of the same type and format
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if (format == sourceFormat && (sourceRegion == new Rectangle(0, 0, Width, Height)) && sourceRegion == destinationRegion)
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{
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SetPixelData(sourceBitmap.GetPixelData());
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return true;
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}
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// Destination region copy is not yet supported
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if (destinationRegion != new Rectangle(0, 0, Width, Height))
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return false;
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// If the source is not Vector4 or requires resizing, send it through BitmapContent.Copy
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if (!(sourceBitmap is PixelBitmapContent<Vector4>) || sourceRegion.Width != destinationRegion.Width || sourceRegion.Height != destinationRegion.Height)
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{
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try
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{
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BitmapContent.Copy(sourceBitmap, sourceRegion, this, destinationRegion);
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return true;
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}
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catch (InvalidOperationException)
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{
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return false;
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}
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}
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// Convert to full colour 32-bit format. Floating point would be preferred for processing, but it appears the ATICompressor does not support this
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var colorBitmap = new PixelBitmapContent<Color>(sourceRegion.Width, sourceRegion.Height);
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BitmapContent.Copy(sourceBitmap, sourceRegion, colorBitmap, new Rectangle(0, 0, colorBitmap.Width, colorBitmap.Height));
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sourceBitmap = colorBitmap;
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ATICompressor.CompressionFormat targetFormat;
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switch (format)
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{
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case SurfaceFormat.RgbaAtcExplicitAlpha:
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targetFormat = ATICompressor.CompressionFormat.AtcRgbaExplicitAlpha;
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break;
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case SurfaceFormat.RgbaAtcInterpolatedAlpha:
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targetFormat = ATICompressor.CompressionFormat.AtcRgbaInterpolatedAlpha;
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break;
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default:
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return false;
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}
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var sourceData = sourceBitmap.GetPixelData();
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var compressedData = ATICompressor.Compress(sourceData, Width, Height, targetFormat);
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SetPixelData(compressedData);
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return true;
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}
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protected override bool TryCopyTo(BitmapContent destinationBitmap, Rectangle sourceRegion, Rectangle destinationRegion)
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{
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SurfaceFormat destinationFormat;
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if (!destinationBitmap.TryGetFormat(out destinationFormat))
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return false;
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SurfaceFormat format;
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TryGetFormat(out format);
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// A shortcut for copying the entire bitmap to another bitmap of the same type and format
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if (format == destinationFormat && (sourceRegion == new Rectangle(0, 0, Width, Height)) && sourceRegion == destinationRegion)
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{
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destinationBitmap.SetPixelData(GetPixelData());
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return true;
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}
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// No other support for copying from a ATC texture yet
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return false;
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}
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}
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}
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