Gsync discussion 1

	B	C	H	I	J	K
1
2
3	Assumption:	vertical scan take 7 ms at "Max refresh rate", which is 142.857Hz
4			Time (1 ms)	Rendering buffer	Vertical Scan
5	Sets:	each row represents 1 ms of time(so 7 rows represent a whole verticle scan period)	0	Frame 0	1
6		Frame x represents the timing GPU switch to a new frame in front buffer	1		2
7		Borders represents the whole vertical scan cycle	2		3
8		"1 2 3 4 5 6 7" represents different portion of monitor doing vertical scan	3		4
9			4		5
10			5		6
11			6		7
12			7		wait
13			8		wait
14			9	Frame 1	1
15			10	took 9 ms	2
16			11		3
17			12		4
18			13		5
19			14		6
20			15		7
21			16		wait
22			17	Frame 2	1
23			18	took 8 ms	2
24			19		3
25			20		4
26			21		5
27			22		6
28			23		7
29			24		wait
30			25		wait
31			26		wait
32			27	Frame 3	1
33			28	took 10 ms	2
34			29		3
35			30		4
36			31		5	(only 5/7 of the whole picture)
37			32	Frame 4	6	<--- now tearing appears
38			33	took 5 ms	7
39			34		1
40			35		2
41			36		3
42			37	Frame 5	4
43			38	took 5 ms	5
44			39		6
45			40		7
46			41		1
47			42		2
48			43		3
49			44		4	<--- this is redundant vertical scan, as the new GPU rendering buffer is not updated
50			45	Frame 6	5	<----- this frame took 8 ms, Gsync should be triggered to active??
51			46	took 8 ms!!	6
52			47		7
53			48		1
54			49		2
55			50		3
56			51		4
57			52		5	<--- this is redundant vertical scan, as the new GPU rendering buffer is not updated
58			53	Frame 7	6
59			54	took 8 ms!!	7
60			55		1
61			56		2
62			57		3
63			58		4
64			59		5
65			60		6
66			61	Frame 8	7
67			62	took 8 ms!!	1
68			63		2
69			64		3
70			65		4
71			66		5
72			67		6
73			68		7
74			69	Frame 9	1
75			70	took 8 ms!!	2
76			71		3
77			72		4
78			73		5
79			74		6
80			75		7
81			76		wait	<--- NOW, Gsync actual start working
82			77	Frame 10	1
83			78	took 8 ms!!	2
84			79		3
85			80		4
86			81		5
87			82		6
88			83		7
89			84		wait
90			85	Frame 11	1
91			86	took 8 ms!!	2
92			87		3
93			88		4
94			89		5
95			90		6
96			91		7
97			92		wait
98			93
99			94
100			95