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runtime: preserve adaptive 4:3 across DPI rounding

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(cherry picked from commit b6aedc800a)
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tetrisgm
2026-08-27 17:51:22 -07:00
committed by Matthew Stanley
parent 5afe95b158
commit acac784c2b
1 changed files with 5 additions and 1 deletions
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runtime/src/main.cpp
+5 -1
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@@ -1658,7 +1658,11 @@ static void update_adaptive_widescreen() {
if (width <= 0 || height <= 0) return;
int num = width, den = height;
if ((int64_t)width * 3 <= (int64_t)height * 4) {
/* A nominal 4:3 client can be one physical pixel wider after fractional-DPI
* conversion (for example 960x720 -> 2161x1620 at 225%). Keep that
* rounding pixel in the identity fallback instead of engaging an almost-
* identity widescreen squash and its cull guard. */
if ((int64_t)(width - 1) * 3 <= (int64_t)height * 4) {
num = 4; den = 3;
} else if ((int64_t)width * g_ws_adaptive_max_den >=
(int64_t)height * g_ws_adaptive_max_num) {