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Added SUPPORT_HALFBUSY_WAIT_LOOP

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raysan5 2020-01-19 17:31:55 +01:00
parent cff38308b7
commit 42d56d2f37
2 changed files with 15 additions and 0 deletions
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2
src/config.h
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@ -48,6 +48,8 @@
#define SUPPORT_MOUSE_CURSOR_RPI 1 #define SUPPORT_MOUSE_CURSOR_RPI 1
// Use busy wait loop for timing sync, if not defined, a high-resolution timer is setup and used // Use busy wait loop for timing sync, if not defined, a high-resolution timer is setup and used
//#define SUPPORT_BUSY_WAIT_LOOP 1 //#define SUPPORT_BUSY_WAIT_LOOP 1
// Use a half-busy wait loop, in this case frame sleeps for some time and runs a busy-wait-loop at the end
//#define SUPPORT_HALFBUSY_WAIT_LOOP
// Wait for events passively (sleeping while no events) instead of polling them actively every frame // Wait for events passively (sleeping while no events) instead of polling them actively every frame
//#define SUPPORT_EVENTS_WAITING 1 //#define SUPPORT_EVENTS_WAITING 1
// Allow automatic screen capture of current screen pressing F12, defined in KeyCallback() // Allow automatic screen capture of current screen pressing F12, defined in KeyCallback()

13
src/core.c
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@ -61,6 +61,9 @@
* #define SUPPORT_BUSY_WAIT_LOOP * #define SUPPORT_BUSY_WAIT_LOOP
* Use busy wait loop for timing sync, if not defined, a high-resolution timer is setup and used * Use busy wait loop for timing sync, if not defined, a high-resolution timer is setup and used
* *
* #define SUPPORT_HALFBUSY_WAIT_LOOP
* Use a half-busy wait loop, in this case frame sleeps for some time and runs a busy-wait-loop at the end
*
* #define SUPPORT_EVENTS_WAITING * #define SUPPORT_EVENTS_WAITING
* Wait for events passively (sleeping while no events) instead of polling them actively every frame * Wait for events passively (sleeping while no events) instead of polling them actively every frame
* *
@ -3342,6 +3345,12 @@ static void Wait(float ms)
// Busy wait loop // Busy wait loop
while ((nextTime - prevTime) < ms/1000.0f) nextTime = GetTime(); while ((nextTime - prevTime) < ms/1000.0f) nextTime = GetTime();
#else #else
#if defined(SUPPORT_HALFBUSY_WAIT_LOOP)
#define MAX_HALFBUSY_WAIT_TIME 4
double destTime = GetTime() + ms/1000;
if (ms > MAX_HALFBUSY_WAIT_TIME) ms -= MAX_HALFBUSY_WAIT_TIME;
#endif
#if defined(_WIN32) #if defined(_WIN32)
Sleep((unsigned int)ms); Sleep((unsigned int)ms);
#elif defined(__linux__) || defined(PLATFORM_WEB) #elif defined(__linux__) || defined(PLATFORM_WEB)
@ -3356,6 +3365,10 @@ static void Wait(float ms)
#elif defined(__APPLE__) #elif defined(__APPLE__)
usleep(ms*1000.0f); usleep(ms*1000.0f);
#endif #endif
#if defined(SUPPORT_HALFBUSY_WAIT_LOOP)
while (GetTime() < destTime) { }
#endif
#endif #endif
} }