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[DVD] Ignore buffer when seeking backwards

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Unfortunately this fix re-breaks Arc Rise Fantasia, so we must restore its INI as well.
This commit is contained in:
Matt Mastracci 2016-02-25 08:08:22 -07:00
parent 2855fb39a4
commit f1a5d6c104
2 changed files with 6 additions and 1 deletions
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1
Data/Sys/GameSettings/RPJ.ini
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@ -2,6 +2,7 @@
[Core] [Core]
# Values set here will override the main Dolphin settings. # Values set here will override the main Dolphin settings.
FastDiscSpeed = True
[EmuState] [EmuState]
# The Emulation State. 1 is worst, 5 is best, 0 is not set. # The Emulation State. 1 is worst, 5 is best, 0 is not set.

6
Source/Core/Core/HW/DVDInterface.cpp
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@ -1301,7 +1301,11 @@ u64 SimulateDiscReadTime(u64 offset, u32 length)
u64 disk_read_duration = CalculateRawDiscReadTime(offset, length) + u64 disk_read_duration = CalculateRawDiscReadTime(offset, length) +
SystemTimers::GetTicksPerSecond() / 1000 * DISC_ACCESS_TIME_MS; SystemTimers::GetTicksPerSecond() / 1000 * DISC_ACCESS_TIME_MS;
if (offset + length > s_last_read_offset + 1024 * 1024) // Assume unbuffered read if the read we are performing asks for data >
// 1MB past the end of the last read *or* asks for data before the last
// read. It assumes the buffer is only used when reading small amounts
// forward.
if (offset + length > s_last_read_offset + 1024 * 1024 || offset < s_last_read_offset)
{ {
// No buffer; just use the simple seek time + read time. // No buffer; just use the simple seek time + read time.
DEBUG_LOG(DVDINTERFACE, "Seeking %" PRId64 " bytes", DEBUG_LOG(DVDINTERFACE, "Seeking %" PRId64 " bytes",