mirror of
https://github.com/RetroPortingToolKit/psxrecomp
synced 2026-10-26 02:11:36 -04:00
Shokunin
09ee810fbd
Nothing is measured about an unknown GPU, so the fallback no longer assumes Ultra's extra work (supersampling above the display, title Ultra extras); Low would drop Smooth motion and the PGXP extras on what is usually capable new hardware. Medium keeps the display's resolution with dynamic resolution under it. Covers unnamed renderers, Linux with only an AMD PCI id, and unnamed nouveau chips. docs/QUALITY_PRESETS.md states plainly that autodetect is a static heuristic over name, threads and memory with no benchmark, and that the dynamic systems keep the frame rate. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
66 lines
2.7 KiB
C
66 lines
2.7 KiB
C
#pragma once
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/* quality_tier.h -- graphics preset autodetection (docs/QUALITY_PRESETS.md).
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*
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* Pure policy: describe the host (CPU, cores, RAM, GPU name, Steam Deck)
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* and get the preset a title's [quality.*] tables should start from. The
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* probes that fill PsxHostInfo live in quality_probe.c; this file does no
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* I/O so the rules are unit-testable (tests/test_quality_tier.c). */
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#include <stddef.h>
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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enum {
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PSX_QUALITY_LOW = 0,
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PSX_QUALITY_MEDIUM = 1,
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PSX_QUALITY_HIGH = 2,
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PSX_QUALITY_ULTRA = 3,
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PSX_QUALITY_COUNT = 4,
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PSX_QUALITY_CUSTOM = 4, /* the player changed a preset-governed setting */
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PSX_QUALITY_NONE = -1
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};
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typedef struct PsxHostInfo {
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char cpu[128]; /* CPU brand string ("Apple M1", "AMD Custom APU 0405") */
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char gpu[128]; /* GPU name ("NVIDIA GeForce RTX 4080 SUPER"); "" unknown */
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char gpu_id[32]; /* stable id used for the fingerprint when gpu is unknown */
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int logical_cores; /* 0 unknown */
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uint64_t ram_mb; /* 0 unknown */
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int steam_deck; /* 1: Steam Deck hardware (DMI / SteamDeck env) */
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} PsxHostInfo;
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/* "low" .. "ultra", "custom"; NULL for anything else. */
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const char *psx_quality_name(int tier);
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/* Case-insensitive; PSX_QUALITY_NONE when unknown. */
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int psx_quality_from_name(const char *name);
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/* The preset this host should start from, and one line saying why
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* ("AMD integrated GPU: Low"). Ultra unless the class cannot hold 60 Hz even
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* at the dynamic floor; unknown hardware gets Medium. */
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int psx_quality_classify(const PsxHostInfo *h, char *reason, size_t reason_cap);
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/* Nearest preset the title offers (bit i of offered_mask = tier i): the
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* highest offered tier <= want, else the lowest offered above it. NONE when
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* the mask is empty. */
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int psx_quality_pick_offered(int want, unsigned offered_mask);
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/* 16 hex digits identifying CPU, core count, RAM (to the GB) and GPU, so a
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* new machine or GPU triggers a fresh detection. Driver updates do not. */
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void psx_quality_fingerprint(const PsxHostInfo *h, char out[17]);
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/* quality_probe.c: OS facts only (CPU brand, threads, RAM, Windows/macOS
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* GPU name, Linux GPU PCI id, Steam Deck DMI). Cheap; runs every launch. */
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void psx_quality_probe_host(PsxHostInfo *h);
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/* GL_RENDERER from a hidden 1x1 window; needs SDL video initialised.
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* 1 on success. Only for a due detection with no OS GPU name. */
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int psx_quality_probe_gl_renderer(char *out, size_t cap);
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/* Human summary for the launcher: "Apple M1 · 8 cores · 8 GB". */
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void psx_quality_summary(const PsxHostInfo *h, char *out, size_t cap);
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#ifdef __cplusplus
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}
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#endif
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