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engine: render immediate text into surfaces

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gamer147
2026-07-30 18:47:35 -04:00
parent 6a8c919df1
commit c2b72cd4b9
9 changed files with 563 additions and 22 deletions
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113
godot/GodotAdvHost.cs
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@@ -5,6 +5,7 @@ using System.Threading;
using Age.Engine.Hosting;
using Age.Engine.Model;
using Age.Engine.Sys4;
using Age.Engine.Text;
[Flags]
public enum HostPresentationReason
@@ -65,6 +66,11 @@ public sealed class GodotAdvHost : IHost
private volatile bool _stopping;
private readonly object _textLock = new();
private readonly Dictionary<int, List<SurfaceTextDraw>> _surfaceText = new();
private readonly CachedGlyphMaskRasterizer? _surfaceTextMaskCache;
private readonly ImmediateSurfaceTextRenderer? _surfaceTextPixelRenderer;
private readonly GlyphRasterizerBackendInfo? _surfaceTextBackendInfo;
private string _surfaceTextFallbackReason;
private bool _surfaceTextFallbackWarningReported;
private readonly Dictionary<int, AdvTextHistoryRenderBatch> _historyText = new();
private sealed class LiveTextState
{
@@ -119,7 +125,9 @@ public sealed class GodotAdvHost : IHost
public GodotAdvHost(Main main, ResourceMap res, string scene, Age.Engine.Hosting.FrameClock clock,
PageLocatorState locator, Sys4LogicalCanvas logicalCanvas,
GodotTimelineLog? timeline = null,
bool synchronizeExplicitPresentation = true)
bool synchronizeExplicitPresentation = true,
IGlyphMaskRasterizer? surfaceTextRasterizer = null,
string? surfaceTextFallbackReason = null)
{
_main = main; _res = res; _rootScene = scene; _clock = clock;
_locator = locator; _timeline = timeline;
@@ -127,9 +135,33 @@ public sealed class GodotAdvHost : IHost
_screenHeight = logicalCanvas.Height;
_slotDims[0] = (_screenWidth, _screenHeight);
_synchronizeExplicitPresentation = synchronizeExplicitPresentation;
_surfaceTextBackendInfo =
(surfaceTextRasterizer as IIdentifiedGlyphMaskRasterizer)?.BackendInfo;
if (surfaceTextRasterizer != null)
{
_surfaceTextMaskCache = new CachedGlyphMaskRasterizer(
surfaceTextRasterizer, capacity: 2048);
_surfaceTextPixelRenderer =
new ImmediateSurfaceTextRenderer(_surfaceTextMaskCache);
}
_surfaceTextFallbackReason = surfaceTextFallbackReason
?? (surfaceTextRasterizer == null
? "No glyph-mask rasterizer was selected."
: "");
}
public Sys4LogicalCanvas LogicalCanvas => new(_screenWidth, _screenHeight);
public bool UsesSurfaceTextPixels => _surfaceTextPixelRenderer != null;
public GlyphRasterizerBackendInfo? SurfaceTextBackendInfo => _surfaceTextBackendInfo;
public string SurfaceTextFallbackReason => _surfaceTextFallbackReason;
public (int Count, int Capacity, long Hits, long Misses) SurfaceTextMaskCacheStats
=> _surfaceTextMaskCache == null
? (0, 0, 0, 0)
: (
_surfaceTextMaskCache.Count,
_surfaceTextMaskCache.Capacity,
_surfaceTextMaskCache.Hits,
_surfaceTextMaskCache.Misses);
public void ReportWarning(string message) => System.Console.Error.WriteLine(message);
@@ -314,6 +346,27 @@ public sealed class GodotAdvHost : IHost
public void DrawStringToSurface(int surfaceSlot, int x, int y, string text, AdvTextStyle style)
{
if (_surfaceTextPixelRenderer != null
&& TryDrawStringPixels(surfaceSlot, x, y, text, style))
{
lock (_textLock)
if (_surfaceText.TryGetValue(surfaceSlot, out var fallbackDraws))
{
fallbackDraws.RemoveAll(draw => draw.X == x && draw.Y == y);
if (fallbackDraws.Count == 0) _surfaceText.Remove(surfaceSlot);
}
_timeline?.Event("draw-string", new()
{
["surface"] = surfaceSlot,
["x"] = x,
["y"] = y,
["text"] = text,
["presentation"] = "rgba-glyph-mask",
["backend"] = _surfaceTextBackendInfo?.Id ?? "unidentified",
});
return;
}
lock (_textLock)
{
if (!_surfaceText.TryGetValue(surfaceSlot, out var draws))
@@ -321,7 +374,63 @@ public sealed class GodotAdvHost : IHost
draws.RemoveAll(draw => draw.X == x && draw.Y == y);
draws.Add(new SurfaceTextDraw(x, y, text, style));
}
_timeline?.Event("draw-string", new() { ["surface"] = surfaceSlot, ["x"] = x, ["y"] = y, ["text"] = text });
_timeline?.Event("draw-string", new()
{
["surface"] = surfaceSlot,
["x"] = x,
["y"] = y,
["text"] = text,
["presentation"] = "label-fallback",
["reason"] = _surfaceTextFallbackReason,
});
}
private bool TryDrawStringPixels(
int surfaceSlot, int x, int y, string text, AdvTextStyle style)
{
RgbaImage? destination = ResolveSurfacePixels(surfaceSlot);
if (destination == null
&& _slotDims.TryGetValue(surfaceSlot, out var dimensions)
&& dimensions.W > 0
&& dimensions.H > 0)
destination = new RgbaImage(
dimensions.W, dimensions.H,
new byte[checked(dimensions.W * dimensions.H * 4)]);
if (destination == null || destination.Width <= 0 || destination.Height <= 0)
{
ReportSurfaceTextFallback(
$"Surface {surfaceSlot} has no rasterizable pixel allocation.");
return false;
}
var updated = new RgbaImage(
destination.Width, destination.Height, (byte[])destination.Pixels.Clone());
try
{
_surfaceTextPixelRenderer!.Render(updated, x, y, text, style);
}
catch (Exception error) when (
error is ArgumentException
or InvalidOperationException
or PlatformNotSupportedException
or System.ComponentModel.Win32Exception)
{
ReportSurfaceTextFallback(
$"{error.GetType().Name}: {error.Message}");
return false;
}
lock (_imageLock) _surfaceImages[surfaceSlot] = updated;
System.Threading.Interlocked.Exchange(ref _presentRequested, 1);
return true;
}
private void ReportSurfaceTextFallback(string reason)
{
_surfaceTextFallbackReason = reason;
if (_surfaceTextFallbackWarningReported) return;
_surfaceTextFallbackWarningReported = true;
ReportWarning($"surface text fell back to Label metadata: {reason}");
}
public (string Text, int X, int Y, int VisibleGlyphs, bool Revealing) SnapshotAdvText()