{"id":3939,"date":"2018-04-13T19:46:50","date_gmt":"2018-04-13T11:46:50","guid":{"rendered":"http:\/\/www.bookcard.net\/wordpress\/?p=3939"},"modified":"2021-02-14T00:30:59","modified_gmt":"2021-02-13T16:30:59","slug":"fps","status":"publish","type":"post","link":"https:\/\/www.bookcard.net\/wordpress\/fps\/","title":{"rendered":"FPS"},"content":{"rendered":"
\"\"<\/a>
FPS<\/figcaption><\/figure>\n

FPS\u5168\u7a31\u70baFrames Per Second.\u7528\u65bc\u7d71\u8a08\u904a\u6232\u8207\u5f71\u7247\u6bcf\u79d2\u7684\u6e32\u67d3\u756b\u9762(\u5e40)\u6b21\u6578.\u6b64\u503c\u8d8a\u9ad8\u756b\u9762\u8d8a\u6d41\u66a2,\u96fb\u5f71\u4ee5\u6bcf\u79d224\u683c\u83f2\u6797\u9032\u884c\u64ad\u653e.\u6240\u4ee5\u4f60\u7684\u904a\u6232\u8981\u6d41\u66a2\u7121\u505c\u9813\u611f.\u9700\u8981\u4e0d\u4f4e\u65bc24\u5e40\u6700\u597d\u9ad8\u65bc30\u5e40.\u7576\u7136\u5e40\u6578\u8d8a\u9ad8\u8d8a\u597d.<\/p>\n

FPS\u7b97\u6cd5\u5982\u4e0b:<\/p>\n

FPS = 100 * Frequency \/ (currentTime – startTime);<\/p>\n

Frequency\u70ba\u6642\u9418\u983b\u7387. currentTime\u8207 startTime\u70ba\u524d\u5f8c\u5169\u6b21\u6642\u9418<\/p>\n

 <\/p>\n

Windows\u4e0b\u4f60\u9700\u8981\u9ad8\u7cbe\u5ea6\u8a08\u6578\u5668:<\/p>\n

\u8fd4\u56de\u786c\u4ef6\u7d1a\u9ad8\u7cbe\u5ea6\u6642\u9418\u983b\u7387,\u82e5\u8fd4\u56de0\u4ee3\u8868\u7cfb\u7d71\u4e0d\u652f\u6301.<\/p>\n

BOOL QueryPerformanceFrequency(LARGE_INTEGER *lpFrequency);<\/p>\n

\u8fd4\u56de\u786c\u4ef6\u7d1a\u9ad8\u7cbe\u5ea6\u8a08\u6578\u5668,\u82e5\u8fd4\u56de0\u4ee3\u8868\u7cfb\u7d71\u4e0d\u652f\u6301.<\/p>\n

BOOL QueryPerformanceCounter (LARGE_INTEGER *lpCount);<\/p>\n

LARGE_INTEGER:\u70ba64BIT\u7d50\u69cb<\/p>\n

 <\/p>\n

\u6b64\u5169\u500b\u51fd\u5f0f\u9700\u8981winbase.h\u982d\u6587\u6a94\u548cKernel32.LIB\u5eab<\/p>\n

#include <winbase.h><\/p>\n

#pragma comment(lib, “Kernel32.LIB”)<\/p>\n

 <\/p>\n

\u5b9a\u7fa9\u5982\u4e0bFPS\u7d50\u69cb:<\/p>\n

typedef struct FPS_TYP {<\/p>\n

LARGE_INTEGER\u00a0 Frequency;\/\/ \u8a08\u6578\u5668\u7684\u983b\u7387<\/p>\n

LARGE_INTEGER\u00a0 startTime;\/\/ \u555f\u52d5\u6642\u9418<\/p>\n

float Frames;\/\/ \u6bcf\u79d2\u6e32\u67d3\u5e40\u6578<\/p>\n

int n;\/\/ \u81e8\u6642\u5e40\u8a08\u6578\u5668<\/p>\n

}FPS,*FPS_PTR;<\/p>\n

 <\/p>\n

\u521d\u6b64\u5316\u9ad8\u7cbe\u5ea6\u5b9a\u6642\u5668<\/p>\n

bool Init_FPS(FPS_PTR fps)<\/p>\n

{<\/p>\n

\/\/ \u8fd4\u56de\u786c\u4ef6\u652f\u6301\u7684\u9ad8\u7cbe\u5ea6\u8a08\u6578\u5668\u7684\u983b\u7387<\/p>\n

if (QueryPerformanceFrequency(&fps->Frequency) == false)<\/p>\n

return false;<\/p>\n

\/\/ \u7372\u53d6\u555f\u52d5\u6642\u9418<\/p>\n

QueryPerformanceCounter(&fps->startTime);\/\/<\/p>\n

return true;<\/p>\n

}<\/p>\n

 <\/p>\n

\u8a08\u7b97\u6bcf\u79d2\u6e32\u67d3\u5e40\u6578,\u6bcf100\u5e40\u9032\u884c\u4e00\u6b21\u8a08\u7b97<\/p>\n

float Get_FPS(FPS_PTR fps)<\/p>\n

{<\/p>\n

++fps->n;<\/p>\n

if (fps->n > 100)<\/p>\n

{<\/p>\n

LARGE_INTEGER currentTime;<\/p>\n

\/\/ \u8fd4\u56de\u9ad8\u7cbe\u5ea6\u8a08\u6578\u5668<\/p>\n

QueryPerformanceCounter(&currentTime);<\/p>\n

fps->Frames = (float)100 * (float)fps->Frequency.QuadPart \/ ((float)currentTime.QuadPart – (float)fps->startTime.QuadPart);<\/p>\n

fps->startTime = currentTime;\/\/ \u91cd\u7f6e\u6642\u9593<\/p>\n

fps->n = 0;<\/p>\n

}<\/p>\n

return fps->Frames;<\/p>\n

}<\/p>\n

 <\/p>\n

\u8ba1\u7b97\u4e24\u6b21\u6d4b\u91cf\u6240\u82b1\u8d39\u65f6\u95f4<\/p>\n

float Get_Counter_FPS(FPS_PTR fps){<\/p>\n

LARGE_INTEGER currentTime;\/\/\u5f53\u524d\u65f6\u949f<\/p>\n

\/\/ \u8fd4\u56de\u9ad8\u7cbe\u5ea6\u8ba1\u6570\u5668<\/p>\n

QueryPerformanceCounter(&currentTime);<\/p>\n

float seconds = ((float)currentTime.QuadPart – (float)fps->startTime.QuadPart) \/ (float)fps->Frequency.QuadPart;<\/p>\n

fps->startTime = currentTime;<\/p>\n

return seconds;<\/p>\n

}<\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

FPS\u5168\u7a31\u70baFrames Per Second.\u7528\u65bc\u7d71\u8a08\u904a\u6232\u8207\u5f71\u7247\u6bcf\u79d2\u7684\u6e32\u67d3\u756b\u9762(\u5e40)\u6b21\u6578.\u6b64\u503c\u8d8a\u9ad8\u756b\u9762\u8d8a\u6d41\u66a2 … <\/p>\n

\u7e7c\u7e8c\u95b1\u8b80 FPS<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[51,11],"tags":[3,42],"class_list":["post-3939","post","type-post","status-publish","format-standard","hentry","category-windows","category-algorithm","tag-windows","tag-computer","entry"],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/posts\/3939","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/comments?post=3939"}],"version-history":[{"count":6,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/posts\/3939\/revisions"}],"predecessor-version":[{"id":10080,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/posts\/3939\/revisions\/10080"}],"wp:attachment":[{"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/media?parent=3939"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/categories?post=3939"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/tags?post=3939"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}