mirror of
https://github.com/RetroPortingToolKit/psxrecomp
synced 2026-10-27 02:32:02 -04:00
Shokunin
8aebc0cdaa
The cache is now ws_scene_cache.h (header-only), used by gpu.c and pinned by tests/test_ws_scene_cache.c: a predicate that flips mid-frame keeps the frame's first answer, a flip between frames is seen on the next frame's first call, an invalidation (savestate load, reset, new predicate) re-evaluates at once, the frame counter wrap re-evaluates, and with the option off every call evaluates as before. generated/OpenBIOS.emitter.sha re-stamped (regen_bios: OpenBIOS C unchanged). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
51 lines
2.1 KiB
C
51 lines
2.1 KiB
C
/* [widescreen] scene_predicate_per_frame (ws_scene_cache.h): a predicate
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* that flips inside a frame keeps the frame's first answer until the next
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* frame; a flip between frames is seen on the next frame's first call; an
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* invalidation (savestate load, reset, a new predicate) re-evaluates at once;
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* with the option off every call evaluates, exactly as without the cache. */
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#include "ws_scene_cache.h"
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#include <stdio.h>
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static int s_value, s_calls;
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static int pred(void) { s_calls++; return s_value; }
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static int fails;
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static void ok(int c, const char *w) { printf(" %s %s\n", c ? "ok " : "FAIL", w); if (!c) fails++; }
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int main(void) {
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WsSceneCache c = {0};
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s_value = 1; s_calls = 0;
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ok(ws_scene_cache_get(&c, 1, 10, pred) == 1, "frame 10, first call: evaluated (1)");
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s_value = 0; /* the scene word changes mid-frame */
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ok(ws_scene_cache_get(&c, 1, 10, pred) == 1, "frame 10, after a mid-frame flip: still 1");
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ok(ws_scene_cache_get(&c, 1, 10, pred) == 1 && s_calls == 1,
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"frame 10: one evaluation for the whole frame");
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ok(ws_scene_cache_get(&c, 1, 11, pred) == 0 && s_calls == 2,
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"frame 11: the flip is seen on its first call");
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s_value = 1;
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ok(ws_scene_cache_get(&c, 1, 11, pred) == 0, "frame 11: a second flip waits for frame 12");
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ok(ws_scene_cache_get(&c, 1, 12, pred) == 1, "frame 12: seen");
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s_value = 0;
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ws_scene_cache_invalidate(&c); /* savestate load */
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ok(ws_scene_cache_get(&c, 1, 12, pred) == 0, "invalidation re-evaluates in the same frame");
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s_calls = 0;
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s_value = 1;
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ok(ws_scene_cache_get(&c, 0, 12, pred) == 1, "off: evaluated");
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s_value = 0;
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ok(ws_scene_cache_get(&c, 0, 12, pred) == 0 && s_calls == 2,
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"off: a mid-frame flip is seen at once, every call evaluates");
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WsSceneCache w = {0};
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s_value = 1;
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ok(ws_scene_cache_get(&w, 1, 0xFFFFFFFFu, pred) == 1, "frame counter wrap: evaluated");
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s_value = 0;
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ok(ws_scene_cache_get(&w, 1, 0u, pred) == 0, "frame counter wrap: next frame re-evaluates");
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printf("%s (%d failure%s)\n", fails ? "FAILED" : "passed", fails, fails == 1 ? "" : "s");
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return fails ? 1 : 0;
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}
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