Added SUPPORT_HALFBUSY_WAIT_LOOP

2 files changed, 15 insertions, 0 deletions

diff --git a/src/config.h b/src/config.h
index fc250d65..17c82eef 100644
--- a/src/config.h
+++ b/src/config.h
@@ -48,6 +48,8 @@
 #define SUPPORT_MOUSE_CURSOR_RPI    1
 // Use busy wait loop for timing sync, if not defined, a high-resolution timer is setup and used
 //#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
 //#define SUPPORT_EVENTS_WAITING      1
 // Allow automatic screen capture of current screen pressing F12, defined in KeyCallback()
diff --git a/src/core.c b/src/core.c
index 73e651e8..bf36d067 100644
--- a/src/core.c
+++ b/src/core.c
@@ -61,6 +61,9 @@
 *   #define SUPPORT_BUSY_WAIT_LOOP
 *       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
 *       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
     while ((nextTime - prevTime) < ms/1000.0f) nextTime = GetTime();
 #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)
         Sleep((unsigned int)ms);
     #elif defined(__linux__) || defined(PLATFORM_WEB)
@@ -3356,6 +3365,10 @@ static void Wait(float ms)
     #elif defined(__APPLE__)
         usleep(ms*1000.0f);
     #endif
+    
+    #if defined(SUPPORT_HALFBUSY_WAIT_LOOP)
+        while (GetTime() < destTime) { }
+    #endif
 #endif
 }