feat: Dynamic Runtime Rasterized MSDF Sprite Font #3055
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,40 @@ | ||
| // Copyright (c) .NET Foundation and Contributors (https://dotnetfoundation.org/ & https://stride3d.net) | ||
| // Distributed under the MIT license. See the LICENSE.md file in the project root for more information. | ||
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| using System.ComponentModel; | ||
| using Stride.Core; | ||
| using Stride.Core.Annotations; | ||
| using Stride.Core.Mathematics; | ||
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| namespace Stride.Assets.SpriteFont | ||
| { | ||
| [DataContract("RuntimeSignedDistanceFieldSpriteFontType")] | ||
| [Display("Runtime SDF")] | ||
| public class RuntimeSignedDistanceFieldSpriteFontType : SpriteFontTypeBase | ||
| { | ||
| /// <inheritdoc/> | ||
| [DataMember(30)] | ||
| [DataMemberRange(MathUtil.ZeroTolerance, 2)] | ||
| [DefaultValue(20)] | ||
| [Display("Default Size")] | ||
| public override float Size { get; set; } = 64; | ||
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| /// <summary> | ||
| /// Distance field range/spread (in pixels) used during MSDF generation. | ||
| /// </summary> | ||
| [DataMember(40)] | ||
| [DefaultValue(8)] | ||
| [DataMemberRange(1, 64, 1, 4, 0)] | ||
| [Display("Pixel Range")] | ||
| public int PixelRange { get; set; } = 8; | ||
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| /// <summary> | ||
| /// Extra padding around each glyph inside the atlas (in pixels). | ||
| /// </summary> | ||
| [DataMember(50)] | ||
| [DefaultValue(2)] | ||
| [DataMemberRange(0, 16, 1, 2, 0)] | ||
| [Display("Padding")] | ||
| public int Padding { get; set; } = 2; | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,135 @@ | ||
| // Copyright (c) .NET Foundation and Contributors (https://dotnetfoundation.org/ & https://stride3d.net) | ||
| // Distributed under the MIT license. See the LICENSE.md file in the project root for more information. | ||
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| using System; | ||
| using System.Data; | ||
| using Stride.Core; | ||
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| namespace Stride.Graphics.Font | ||
| { | ||
| /// <summary> | ||
| /// An RGBA bitmap representing a glyph (4 bytes per pixel). | ||
| /// Intended for runtime MSDF font (stored in RGB, alpha optional). | ||
| /// </summary> | ||
| internal sealed class CharacterBitmapRgba : IDisposable | ||
| { | ||
| private readonly int width; | ||
| private readonly int rows; | ||
| private readonly int pitch; | ||
| private readonly IntPtr buffer; | ||
|
Collaborator
There was a problem hiding this comment. This doesn't have to be an IntPtr, or have the class as disposable.
Author
There was a problem hiding this comment. I made another branch to use Color[] without the dispose, however, it doesn't seem to display anything. This one is probably one of these changes that requires a lot of debugging and I suggest that we leave it until later. |
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| private bool disposed; | ||
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| /// <summary> | ||
| /// Initializes a null bitmap. | ||
| /// </summary> | ||
| public CharacterBitmapRgba() | ||
| { | ||
| } | ||
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| /// <summary> | ||
| /// Allocates an RGBA bitmap (uninitialized). | ||
| /// </summary> | ||
| public CharacterBitmapRgba(int width, int rows) | ||
| { | ||
| if (width < 0) throw new ArgumentOutOfRangeException(nameof(width)); | ||
| if (rows < 0) throw new ArgumentOutOfRangeException(nameof(rows)); | ||
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| this.width = width; | ||
| this.rows = rows; | ||
| pitch = checked(width * 4); | ||
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| if (width != 0 && rows != 0) | ||
| { | ||
| buffer = MemoryUtilities.Allocate(checked(pitch * rows), 1); | ||
| } | ||
| } | ||
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| /// <summary> | ||
| /// Allocates an RGBA bitmap and copies data from a source buffer with the given pitch. | ||
| /// </summary> | ||
| public unsafe CharacterBitmapRgba(IntPtr srcRgba, int width, int rows, int srcPitchBytes) | ||
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| : this(width, rows) | ||
| { | ||
| if (srcRgba == IntPtr.Zero && (width != 0 || rows != 0)) | ||
| throw new ArgumentNullException(nameof(srcRgba)); | ||
| if (srcPitchBytes < 0) throw new ArgumentOutOfRangeException(nameof(srcPitchBytes)); | ||
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| if (buffer == IntPtr.Zero) | ||
| return; | ||
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| var src = (byte*)srcRgba; | ||
| var dst = (byte*)buffer; | ||
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| // Copy row-by-row to handle pitch differences. | ||
| var copyBytesPerRow = Math.Min(srcPitchBytes, pitch); | ||
| for (int y = 0; y < rows; y++) | ||
| { | ||
| var srcRow = src + y * srcPitchBytes; | ||
| var dstRow = dst + y * pitch; | ||
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| MemoryUtilities.CopyWithAlignmentFallback(dstRow, srcRow, (uint)copyBytesPerRow); | ||
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| if (copyBytesPerRow < pitch) | ||
| { | ||
| MemoryUtilities.Clear(dstRow + copyBytesPerRow, (uint)(pitch - copyBytesPerRow)); | ||
| } | ||
| } | ||
| } | ||
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| public bool IsDisposed => disposed; | ||
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| public int Width | ||
| { | ||
| get | ||
| { | ||
| ThrowIfDisposed(); | ||
| return width; | ||
| } | ||
| } | ||
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| public int Rows | ||
| { | ||
| get | ||
| { | ||
| ThrowIfDisposed(); | ||
| return rows; | ||
| } | ||
| } | ||
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| public int Pitch | ||
| { | ||
| get | ||
| { | ||
| ThrowIfDisposed(); | ||
| return pitch; | ||
| } | ||
| } | ||
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| public IntPtr Buffer | ||
| { | ||
| get | ||
| { | ||
| ThrowIfDisposed(); | ||
| return buffer; | ||
| } | ||
| } | ||
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| public void Dispose() | ||
| { | ||
| if (disposed) | ||
| return; | ||
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| if (buffer != IntPtr.Zero) | ||
| MemoryUtilities.Free(buffer); | ||
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| disposed = true; | ||
| } | ||
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| private void ThrowIfDisposed() | ||
| { | ||
| if (disposed) | ||
| throw new ObjectDisposedException(nameof(CharacterBitmapRgba), "Cannot access a disposed object."); | ||
| } | ||
| } | ||
| } | ||
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This seems either unrelated or too loosely documented, what do you mean by M1 and co. ?
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These are personal milestones for me to keep track of project development. Since MVP Is complete, this can and will be removed.
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I just had the warning to label it as an experimental feature.