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feat(a2b): BmpHeader.ReadDims + gfx diagnostic (headless geometry oracle)

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BmpHeader.ReadDims reads texture dims from the pre-converted BMP header (VM-
thread-safe, no pixel decode) — the data source for GetTextureSize. `Age.Cli gfx
<SCENE>` runs a scene and dumps set-texture/get-texture-size/draw-texture in
order with resolved file + computed geometry, mirroring the `audio` diagnostic.

Confirms 0x208 now yields real dims (800x600/800x800/800x227) and sane UI
geometry; surfaces the first-load anchor edge (unseeded state, Phase B).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
gamer147
2026-07-06 22:50:25 -04:00
parent ea0f1ddc7a
commit de5eb6562e
3 changed files with 121 additions and 0 deletions
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63
engine/Age.Cli/Program.cs
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@@ -42,6 +42,28 @@ if (args[0] == "audio")
return 0;
}
if (args[0] == "gfx")
{
// gfx <SCENE.BIN> [0xADDR=VAL ...] — run the scene and dump executed texture ops in order with
// resolved file + computed geometry (set-texture / get-texture-size / draw-texture). Diagnostic only.
var sceneName = args[1];
var sceneKey = Path.GetFileNameWithoutExtension(sceneName).ToUpperInvariant();
var res = ResourceMap.Load();
var host = new GfxTraceHost(res, sceneKey);
var vm = new VirtualMachine(Sys4Loader.Load(Paths.Scripts()[sceneName.ToUpperInvariant()], table), table, host);
foreach (var s in args.Skip(2))
{
var kv = s.Split('=');
int k = kv[0].StartsWith("0x") ? Convert.ToInt32(kv[0], 16) : int.Parse(kv[0]);
long v = kv[1].StartsWith("0x") ? Convert.ToInt64(kv[1], 16) : long.Parse(kv[1]);
vm.Globals[k] = v;
}
vm.Run();
Console.WriteLine($"{sceneName}: {host.Events.Count} texture ops (halt: {vm.HaltReason})");
foreach (var line in host.Events) Console.WriteLine(" " + line);
return 0;
}
if (args[0] == "trace")
{
var scene = new Regex(@"^S[CP]\d{4}\.BIN$");
@@ -86,3 +108,44 @@ sealed class AudioTraceHost : IHost
public void DrawTexture(int slot, int srcX, int srcY, int width, int height, int dstX, int dstY) { }
public (int Width, int Height) GetTextureSize(int slot) => (0, 0);
}
sealed class GfxTraceHost : IHost
{
private readonly ResourceMap _res;
private readonly string _scene;
private readonly Dictionary<int, string?> _slotBmp = new(); // slot -> resolved BMP path (or null)
public List<string> Events { get; } = new();
public GfxTraceHost(ResourceMap res, string scene) { _res = res; _scene = scene; }
public (int Width, int Height) GetTextureSize(int slot)
{
_slotBmp.TryGetValue(slot, out var bmp);
var (w, h) = BmpHeader.ReadDims(bmp);
Events.Add($"get-tex-size slot={slot} -> {w}x{h}");
return (w, h);
}
public void SetTexture(long resId, int slot)
{
var e = _res.Resolve(_scene, resId);
var bmp = e != null ? ResourceMap.TexturePath(e) : null;
_slotBmp[slot] = bmp;
Events.Add($"set-texture slot={slot} res=0x{resId:x} -> {(e?.Name ?? "<unresolved>")}"
+ (bmp == null ? " [NO BMP]" : ""));
}
public void DrawTexture(int slot, int sx, int sy, int w, int h, int dx, int dy)
{
_slotBmp.TryGetValue(slot, out var bmp);
Events.Add($"draw-texture slot={slot} src=({sx},{sy} {w}x{h}) dst=({dx},{dy}) "
+ $"file={(bmp != null ? System.IO.Path.GetFileName(bmp) : "<none>")}");
}
public void CreateTexture(int slot, int width, int height) => Events.Add($"create-texture slot={slot} {width}x{height}");
public void ShowText(int offset, string text) { }
public void CallScript(long id) { }
public void OnStub(int opcode) { }
public void WaitForInput() { }
public void PlayBgm(long id) { }
public void PlayVoice(long id) { }
}