mirror of
https://github.com/raysan5/raylib.git
synced 2025-09-10 13:28:16 +00:00
Reorganized some functions, WaitTime() is common to all platforms
This commit is contained in:
Ray
157
src/rcore.c
157
src/rcore.c
@@ -430,15 +430,6 @@ bool IsCursorOnScreen(void)
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return CORE.Input.Mouse.cursorOnScreen;
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}
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//----------------------------------------------------------------------------------
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// Module Functions Definition: Custom frame control
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//----------------------------------------------------------------------------------
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// NOTE: Functions with a platform-specific implementation on rcore_<platform>.c
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//void SwapScreenBuffer(void);
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//void PollInputEvents(void);
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//void WaitTime(double seconds);
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//----------------------------------------------------------------------------------
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// Module Functions Definition: Screen Drawing
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//----------------------------------------------------------------------------------
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@@ -1236,6 +1227,60 @@ float GetFrameTime(void)
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return (float)CORE.Time.frame;
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}
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//----------------------------------------------------------------------------------
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// Module Functions Definition: Custom frame control
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//----------------------------------------------------------------------------------
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// NOTE: Functions with a platform-specific implementation on rcore_<platform>.c
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//void SwapScreenBuffer(void);
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//void PollInputEvents(void);
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// Wait for some time (stop program execution)
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// NOTE: Sleep() granularity could be around 10 ms, it means, Sleep() could
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// take longer than expected... for that reason we use the busy wait loop
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// Ref: http://stackoverflow.com/questions/43057578/c-programming-win32-games-sleep-taking-longer-than-expected
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// Ref: http://www.geisswerks.com/ryan/FAQS/timing.html --> All about timing on Win32!
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void WaitTime(double seconds)
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{
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if (seconds < 0) return;
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#if defined(SUPPORT_BUSY_WAIT_LOOP) || defined(SUPPORT_PARTIALBUSY_WAIT_LOOP)
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double destinationTime = GetTime() + seconds;
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#endif
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#if defined(SUPPORT_BUSY_WAIT_LOOP)
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while (GetTime() < destinationTime) { }
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#else
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#if defined(SUPPORT_PARTIALBUSY_WAIT_LOOP)
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double sleepSeconds = seconds - seconds*0.05; // NOTE: We reserve a percentage of the time for busy waiting
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#else
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double sleepSeconds = seconds;
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#endif
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// System halt functions
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#if defined(_WIN32)
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Sleep((unsigned long)(sleepSeconds*1000.0));
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#endif
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#if defined(__linux__) || defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__EMSCRIPTEN__)
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struct timespec req = { 0 };
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time_t sec = sleepSeconds;
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long nsec = (sleepSeconds - sec)*1000000000L;
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req.tv_sec = sec;
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req.tv_nsec = nsec;
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// NOTE: Use nanosleep() on Unix platforms... usleep() it's deprecated.
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while (nanosleep(&req, &req) == -1) continue;
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#endif
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#if defined(__APPLE__)
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usleep(sleepSeconds*1000000.0);
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#endif
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#if defined(SUPPORT_PARTIALBUSY_WAIT_LOOP)
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while (GetTime() < destinationTime) { }
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#endif
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#endif
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}
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//----------------------------------------------------------------------------------
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// Module Functions Definition: Misc
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//----------------------------------------------------------------------------------
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@@ -2288,6 +2333,30 @@ int GetTouchPointCount(void)
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// NOTE: Functions with a platform-specific implementation on rcore_<platform>.c
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//static bool InitGraphicsDevice(int width, int height)
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// Initialize hi-resolution timer
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void InitTimer(void)
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{
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// Setting a higher resolution can improve the accuracy of time-out intervals in wait functions.
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// However, it can also reduce overall system performance, because the thread scheduler switches tasks more often.
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// High resolutions can also prevent the CPU power management system from entering power-saving modes.
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// Setting a higher resolution does not improve the accuracy of the high-resolution performance counter.
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#if defined(_WIN32) && defined(SUPPORT_WINMM_HIGHRES_TIMER) && !defined(SUPPORT_BUSY_WAIT_LOOP)
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timeBeginPeriod(1); // Setup high-resolution timer to 1ms (granularity of 1-2 ms)
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#endif
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#if defined(__linux__) || defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__EMSCRIPTEN__)
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struct timespec now = { 0 };
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if (clock_gettime(CLOCK_MONOTONIC, &now) == 0) // Success
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{
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CORE.Time.base = (unsigned long long int)now.tv_sec*1000000000LLU + (unsigned long long int)now.tv_nsec;
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}
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else TRACELOG(LOG_WARNING, "TIMER: Hi-resolution timer not available");
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#endif
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CORE.Time.previous = GetTime(); // Get time as double
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}
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// Set viewport for a provided width and height
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void SetupViewport(int width, int height)
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{
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@@ -2395,76 +2464,6 @@ void SetupFramebuffer(int width, int height)
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}
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}
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// Initialize hi-resolution timer
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void InitTimer(void)
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{
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// Setting a higher resolution can improve the accuracy of time-out intervals in wait functions.
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// However, it can also reduce overall system performance, because the thread scheduler switches tasks more often.
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// High resolutions can also prevent the CPU power management system from entering power-saving modes.
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// Setting a higher resolution does not improve the accuracy of the high-resolution performance counter.
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#if defined(_WIN32) && defined(SUPPORT_WINMM_HIGHRES_TIMER) && !defined(SUPPORT_BUSY_WAIT_LOOP)
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timeBeginPeriod(1); // Setup high-resolution timer to 1ms (granularity of 1-2 ms)
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#endif
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#if defined(__linux__) || defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__EMSCRIPTEN__)
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struct timespec now = { 0 };
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if (clock_gettime(CLOCK_MONOTONIC, &now) == 0) // Success
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{
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CORE.Time.base = (unsigned long long int)now.tv_sec*1000000000LLU + (unsigned long long int)now.tv_nsec;
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}
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else TRACELOG(LOG_WARNING, "TIMER: Hi-resolution timer not available");
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#endif
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CORE.Time.previous = GetTime(); // Get time as double
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}
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// Wait for some time (stop program execution)
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// NOTE: Sleep() granularity could be around 10 ms, it means, Sleep() could
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// take longer than expected... for that reason we use the busy wait loop
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// Ref: http://stackoverflow.com/questions/43057578/c-programming-win32-games-sleep-taking-longer-than-expected
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// Ref: http://www.geisswerks.com/ryan/FAQS/timing.html --> All about timing on Win32!
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void WaitTime(double seconds)
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{
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if (seconds < 0) return;
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#if defined(SUPPORT_BUSY_WAIT_LOOP) || defined(SUPPORT_PARTIALBUSY_WAIT_LOOP)
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double destinationTime = GetTime() + seconds;
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#endif
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#if defined(SUPPORT_BUSY_WAIT_LOOP)
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while (GetTime() < destinationTime) { }
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#else
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#if defined(SUPPORT_PARTIALBUSY_WAIT_LOOP)
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double sleepSeconds = seconds - seconds*0.05; // NOTE: We reserve a percentage of the time for busy waiting
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#else
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double sleepSeconds = seconds;
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#endif
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// System halt functions
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#if defined(_WIN32)
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Sleep((unsigned long)(sleepSeconds*1000.0));
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#endif
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#if defined(__linux__) || defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__EMSCRIPTEN__)
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struct timespec req = { 0 };
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time_t sec = sleepSeconds;
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long nsec = (sleepSeconds - sec)*1000000000L;
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req.tv_sec = sec;
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req.tv_nsec = nsec;
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// NOTE: Use nanosleep() on Unix platforms... usleep() it's deprecated.
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while (nanosleep(&req, &req) == -1) continue;
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#endif
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#if defined(__APPLE__)
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usleep(sleepSeconds*1000000.0);
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#endif
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#if defined(SUPPORT_PARTIALBUSY_WAIT_LOOP)
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while (GetTime() < destinationTime) { }
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#endif
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#endif
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}
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// Scan all files and directories in a base path
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// WARNING: files.paths[] must be previously allocated and
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// contain enough space to store all required paths
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