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subhobhai943andClaude Opus 4.8
2c2e2d536e
Rework the compositor so it stops repainting the whole screen every frame, tripling the frame rate (17 -> 54 FPS at HD) and adding smooth animation. - Scene-dirty skipping (gui/gui_desktop.c): the full scene is recomposited only when something other than the bare pointer changed -- input, an open animation, or a ~10 Hz heartbeat for live content (clock, graphs). Idle and pointer-only frames skip the recomposite entirely. - Cursor save-under (gui/gui_cursor.c): the pointer is an overlay that stashes and restores the pixels beneath it, so moving the mouse never forces a full repaint -- pointer motion runs at the frame cap. - 60 FPS frame pacer: each iteration is timed against the monotonic clock and padded to a 16.666 ms budget with the new ktime_delay_us() (HPET-precise busy-wait), giving consistent pacing instead of a free-running spin. - Window open animation (gui/gui_wm.c): new windows grow from 60% to full size with a cubic ease-out over ~160 ms; gui_wm_update() drives it and reports while any window is still animating so the compositor keeps redrawing. - Default display mode set to 1280x720 (HD) -- the sweet spot where the software compositor sustains a near-60 FPS cursor with headroom for effects. Kernel: kernel/time/ktime.c gains ktime_delay_us(), a precise HPET-based delay (bounded PIT fallback) used by the pacer. Verified live (screenshotted): boots to 1280x720, logs in, tray reads ~54 FPS (green) while the pointer moves, no cursor ghosting, windows render cleanly. Clean build on x86_64/aarch64/armv8i; 0 panics / 0 OOM. Co-Authored-By: Claude Opus 4.8 <[email protected]> Claude-Session: https://claude.ai/code/session_01Fh5z6V7nGPbHvqVG5p4CXX
22 lines
742 B
C
22 lines
742 B
C
#ifndef _KERNEL_KTIME_H
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#define _KERNEL_KTIME_H
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// Unified monotonic high-resolution clock. Prefers the HPET (nanosecond grade)
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// and falls back to the 100 Hz timer tick when no HPET is present.
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#include <stdint.h>
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#include <stdbool.h>
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void ktime_init(void);
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uint64_t ktime_ns(void); // nanoseconds since ktime_init
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uint64_t ktime_us(void);
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uint64_t ktime_ms(void);
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const char* ktime_source(void); // "HPET" or "PIT"
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bool ktime_is_highres(void); // true when backed by the HPET
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// Busy-wait for the given number of microseconds against the monotonic clock.
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// Precise when HPET-backed; used by the compositor's 60 FPS frame pacer.
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void ktime_delay_us(uint64_t us);
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#endif // _KERNEL_KTIME_H
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