From b405973e91275d3ba921ca76a46b471982bf7fd6 Mon Sep 17 00:00:00 2001
From: TermiNexus <wyt18222152539wyt@163.com>
Date: Sat, 17 Oct 2026 13:20:22 +0800
Subject: [PATCH] =?UTF-8?q?perf(gargantua):=20=E6=B8=B2=E6=9F=93=E6=8C=89?=
 =?UTF-8?q?=2064=20=E5=83=8F=E7=B4=A0=E5=88=86=E5=9D=97=E5=B9=B6=E6=AF=8F?=
 =?UTF-8?q?=E5=9D=97=E8=AE=A9=E5=87=BA=20CPU?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

原实现一次连续算 4 行（640 像素，单像素最坏 100 步），长时间不让出，单核下输入/合成全卡。改为 64 像素一块，每块后 process.yield_cpu()；每 4 行仍 root.redraw() 保持渐进刷新节奏；事件轮询从每 4 行一次提升到每 64 像素一次。单次占用降到约 1/10，逐像素结果不变（仅调度顺序变化）。
---
 Apps/Gargantua/main.vp | 36 +++++++++++++++++++-----------------
 1 file changed, 19 insertions(+), 17 deletions(-)

diff --git a/Apps/Gargantua/main.vp b/Apps/Gargantua/main.vp
index 17e0ec9..86a0775 100644
--- a/Apps/Gargantua/main.vp
+++ b/Apps/Gargantua/main.vp
@@ -19,7 +19,8 @@ define DISK_OUT = 11.0
 define CAM_DIST = 22.0
 define CAM_ELEV = 9.0
 define FOVF = 0.55
-define YIELD_ROWS = 4
+define SLICE_PIXELS = 64
+define FLUSH_ROWS = 4
 define V3_POOL_SIZE = 8192
 define V3_POOL_BYTES = V3_POOL_SIZE * 24 + 512
 
@@ -249,6 +250,8 @@ export def _start() -> int:
 
     gT: double = 0.0
     rendered: int = 0
+    rx: int = 0
+    ry: int = 0
 
     evt: window.InputEvent
     while window.is_active(root.win_id):
@@ -263,22 +266,21 @@ export def _start() -> int:
                 canvas.set_fb(fb, new_w, new_h)
 
         if rendered == 0:
-            y: int = 0
-            while y < GH:
-                for x in range(GW):
-                    pixel: uint32 = shade_pixel(x, y, gT)
-                    fb[y * GW + x] = pixel
-                y += 1
-                if y % YIELD_ROWS == 0:
-                    root.redraw()
-                    process.yield_cpu()
-                    result2: int = window.poll_event(&evt)
-                    if result2 != 0:
-                        if evt.type == window.EVENT_TYPE_PING:
-                            window.flush(root.win_id)
-            root.redraw()
-            rendered = 1
-            gT += 50.0
+            # 固定像素预算切片，保证单次占用时间片有上界
+            budget: int = SLICE_PIXELS
+            while budget > 0 and ry < GH:
+                fb[ry * GW + rx] = shade_pixel(rx, ry, gT)
+                rx += 1
+                budget -= 1
+                if rx >= GW:
+                    rx = 0
+                    ry += 1
+                    if ry % FLUSH_ROWS == 0:
+                        root.redraw()
+            if ry >= GH:
+                root.redraw()
+                rendered = 1
+                gT += 50.0
 
         process.yield_cpu()