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Extract VM presentation opcode handler

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gamer147
2026-08-02 23:59:21 -04:00
parent 803df2826f
commit 07010298bd
4 changed files with 58 additions and 20 deletions
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46
engine/Age.Engine/Vm/VirtualMachine.Presentation.cs Normal file
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@@ -0,0 +1,46 @@
using Age.Engine.Hosting;
using Age.Engine.Model;
namespace Age.Engine.Vm;
public sealed partial class VirtualMachine
{
private int StepPresentation(string label, IReadOnlyList<Operand> a, int pc)
{
switch (label)
{
case "queue-surface-alpha-transition": // 0x223: target surface crossfade over two object ranges
Gfx.QueueSurfaceAlphaTransition(Read(a[0]), (int)Read(a[1]), Read(a[2]), (int)Read(a[3]),
Read(a[4]), (int)Read(a[5]), Read(a[6]), Read(a[7])); return pc + 1;
case "present-frame": // 0x20c: read/message-skip path snaps a queued transition to its endpoint
_host.PresentFrame(Gfx); return pc + 1;
case "fade-surface-in-from-black": // 0x21: blocking black -> captured full-frame surface
case "u00418860":
_host.FadeSurfaceWithBlack(
Gfx, (int)Read(a[0]), Read(a[1]), SurfaceBlackFadeDirection.FromBlack,
_messageSkipServiceActive || _host.IsMessageSkipActive);
return pc + 1;
case "fade-surface-out-to-black": // 0x22: blocking captured full-frame surface -> black
case "u00418920":
_host.FadeSurfaceWithBlack(
Gfx, (int)Read(a[0]), Read(a[1]), SurfaceBlackFadeDirection.ToBlack,
_messageSkipServiceActive || _host.IsMessageSkipActive);
return pc + 1;
case "crossfade-surfaces": // 0x25: legacy full-frame surface alpha transition
case "u00418B40":
_host.CrossfadeSurfaces(
Gfx, (int)Read(a[0]), (int)Read(a[1]), Read(a[2]),
_messageSkipServiceActive || _host.IsMessageSkipActive);
return pc + 1;
case "mark-frame-yield": // 0x21c: normal foreground-transition scheduler/resume boundary
_host.WaitForForegroundTransition(Gfx); return pc + 1;
case "clear-gfx-command-queue": // 0x224: retained compositor does not use this native queue
return pc + 1;
case "present-gfx-object-range": // 0x222: publish pending retained changes in the selected range
case "u004216C0":
_host.PresentObjectRange(Gfx, Read(a[0]), Read(a[1])); return pc + 1;
default:
throw new InvalidOperationException($"Non-presentation opcode routed to presentation handler: {label}");
}
}
}

19
engine/Age.Engine/Vm/VirtualMachine.cs
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@@ -2606,35 +2606,18 @@ public sealed partial class VirtualMachine
case "play-movie-mask-transition":
return StepMovie(label, ins, pc);
case "queue-surface-alpha-transition": // 0x223: target surface crossfade over two object ranges
Gfx.QueueSurfaceAlphaTransition(Read(a[0]), (int)Read(a[1]), Read(a[2]), (int)Read(a[3]),
Read(a[4]), (int)Read(a[5]), Read(a[6]), Read(a[7])); return pc + 1;
case "present-frame": // 0x20c: read/message-skip path snaps a queued transition to its endpoint
_host.PresentFrame(Gfx); return pc + 1;
case "fade-surface-in-from-black": // 0x21: blocking black -> captured full-frame surface
case "u00418860":
_host.FadeSurfaceWithBlack(
Gfx, (int)Read(a[0]), Read(a[1]), SurfaceBlackFadeDirection.FromBlack,
_messageSkipServiceActive || _host.IsMessageSkipActive);
return pc + 1;
case "fade-surface-out-to-black": // 0x22: blocking captured full-frame surface -> black
case "u00418920":
_host.FadeSurfaceWithBlack(
Gfx, (int)Read(a[0]), Read(a[1]), SurfaceBlackFadeDirection.ToBlack,
_messageSkipServiceActive || _host.IsMessageSkipActive);
return pc + 1;
case "crossfade-surfaces": // 0x25: legacy full-frame surface alpha transition
case "u00418B40":
_host.CrossfadeSurfaces(
Gfx, (int)Read(a[0]), (int)Read(a[1]), Read(a[2]),
_messageSkipServiceActive || _host.IsMessageSkipActive);
return pc + 1;
case "mark-frame-yield": // 0x21c: normal foreground-transition scheduler/resume boundary
_host.WaitForForegroundTransition(Gfx); return pc + 1;
case "clear-gfx-command-queue": // 0x224: retained compositor does not use this native queue
return pc + 1;
case "present-gfx-object-range": // 0x222: publish pending retained changes in the selected range
case "u004216C0":
_host.PresentObjectRange(Gfx, Read(a[0]), Read(a[1])); return pc + 1;
return StepPresentation(label, a, pc);
default:
// Stub is per-instruction frequency (the VM handles ~30 ops; the rest hit here, e.g.
// 0x258/0x259 stmt markers appear en masse), so gate it with Step — else --trace floods.