| [1114] | 1 | using System;
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| 2 | using System.Collections.Generic;
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| 3 | using System.IO;
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| 4 | using Oni.Imaging;
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| 5 |
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| 6 | namespace Oni.Motoko
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| 7 | {
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| 8 | internal static class TextureUtils
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| 9 | {
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| 10 | public static SurfaceFormat ToSurfaceFormat(this TextureFormat format)
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| 11 | {
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| 12 | switch (format)
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| 13 | {
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| 14 | case TextureFormat.BGRA4444:
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| 15 | return SurfaceFormat.BGRA4444;
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| 16 |
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| 17 | case TextureFormat.BGR555:
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| 18 | return SurfaceFormat.BGRX5551;
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| 19 |
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| 20 | case TextureFormat.BGRA5551:
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| 21 | return SurfaceFormat.BGRA5551;
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| 22 |
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| 23 | case TextureFormat.RGBA:
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| 24 | return SurfaceFormat.RGBA;
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| 25 |
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| 26 | case TextureFormat.BGR:
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| 27 | return SurfaceFormat.BGRX;
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| 28 |
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| 29 | case TextureFormat.DXT1:
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| 30 | return SurfaceFormat.DXT1;
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| 31 |
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| 32 | default:
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| 33 | throw new NotSupportedException(string.Format("Texture format {0} is not supported", format));
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| 34 | }
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| 35 | }
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| 36 |
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| 37 | public static Surface LoadImage(string filePath)
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| 38 | {
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| 39 | var surfaces = new List<Surface>();
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| 40 |
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| 41 | switch (Path.GetExtension(filePath).ToLowerInvariant())
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| 42 | {
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| 43 | case ".tga":
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| 44 | surfaces.Add(TgaReader.Read(filePath));
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| 45 | break;
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| 46 | default:
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| 47 | #if !NETCORE
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| 48 | surfaces.Add(SysReader.Read(filePath));
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| 49 | #endif
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| 50 | break;
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| 51 | }
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| 52 |
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| 53 | if (surfaces.Count == 0)
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| 54 | throw new InvalidDataException(string.Format("Could not load image '{0}'", filePath));
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| 55 |
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| 56 | return surfaces[0];
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| 57 | }
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| 58 |
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| 59 | public static int RoundToPowerOf2(int value)
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| 60 | {
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| 61 | if (value <= 2)
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| 62 | return value;
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| 63 |
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| 64 | int hsb = 0;
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| 65 |
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| 66 | for (int x = value; x > 1; hsb++)
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| 67 | x >>= 1;
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| 68 |
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| 69 | //
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| 70 | // TODO would be nice to round up for cases like 127
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| 71 | // But that require to upscale the image and currently the image
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| 72 | // resizing code doesn't handle upscaling.
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| 73 | //
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| 74 |
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| 75 | //return 1 << (hsb + ((value >> (hsb - 1)) & 1));
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| 76 |
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| 77 | return 1 << hsb;
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| 78 | }
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| 79 | }
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| 80 | }
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