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Fix UI tuner: scaleFactor is ignored in ScaleWithScreenSize

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CanvasScaler.scaleFactor only applies to ConstantPixelSize mode, so the old
SCALE_MULT knob would have done nothing. Replaced with HUD_SCALE, implemented
via referenceResolution.y (effective scale = screenH/refH), which genuinely
shrinks the HUD while giving the layout MORE logical room - the right lever
for overlapping text.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
ckoch
2026-07-21 15:52:19 -04:00
co-authored by Claude Opus 4.8
parent 3525c79dba
commit bd9fdc50f6
1 changed files with 12 additions and 6 deletions
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tools/unity_uitune.cs
+12 -6
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@@ -10,9 +10,11 @@
// ---- KNOBS -----------------------------------------------------------------
float MATCH = 1.0f; // 0 = scale by width, 1 = scale by height
float SCALE_MULT = 1.0f; // extra multiplier on top (0.9 = 10% smaller HUD)
float REF_W = 0f; // 0 = leave reference resolution alone
float REF_H = 0f; // e.g. set 3840/1080 to design against ultrawide
// HUD_SCALE shrinks/grows the HUD *without* cramping the layout.
// <1 = smaller HUD + MORE logical room (use this to cure overlapping text)
// Implemented by raising referenceResolution.y, because CanvasScaler.scaleFactor
// is IGNORED in ScaleWithScreenSize mode (it only applies to ConstantPixelSize).
float HUD_SCALE = 1.0f; // try 0.95, 0.9, 0.85
bool LIST_ONLY = false; // true = report current state, change nothing
// ----------------------------------------------------------------------------
@@ -27,10 +29,14 @@ foreach (var cs in UnityEngine.Object.FindObjectsOfType<UnityEngine.UI.CanvasSca
if (!LIST_ONLY)
{
if (REF_W > 0 && REF_H > 0)
cs.referenceResolution = new UnityEngine.Vector2(REF_W, REF_H);
cs.matchWidthOrHeight = MATCH;
cs.scaleFactor = SCALE_MULT;
if (HUD_SCALE > 0f && System.Math.Abs(HUD_SCALE - 1f) > 0.0001f)
{
// effective scale = screenH / refH, so refH = designH / HUD_SCALE
var r = cs.referenceResolution;
cs.referenceResolution = new UnityEngine.Vector2(r.x, 1080f / HUD_SCALE);
log.AppendLine($" refResolution {r} -> {cs.referenceResolution}");
}
}
// report the resulting logical canvas the UI is laid out in