Merge pull request #8054 from jordan-woyak/emu-wm-determinism-check
WiimoteEmu: Report game quirk on direct read of EXT/IR input.
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commit
6cc1e7cfdb
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@ -139,7 +139,8 @@ void DolphinAnalytics::ReportGameStart()
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// Keep in sync with enum class GameQuirk definition.
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static const char* GAME_QUIRKS_NAMES[] = {
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"icache-matters", // ICACHE_MATTERS
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"icache-matters",
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"directly-reads-wiimote-input",
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};
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static_assert(sizeof(GAME_QUIRKS_NAMES) / sizeof(GAME_QUIRKS_NAMES[0]) ==
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static_cast<u32>(GameQuirk::COUNT),
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@ -24,6 +24,10 @@ enum class GameQuirk
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// Sometimes code run from ICache is different from its mirror in RAM.
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ICACHE_MATTERS = 0,
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// The Wii remote hardware makes it possible to bypass normal data reporting and directly
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// "read" extension or IR data. This would break our current TAS/NetPlay implementation.
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DIRECTLY_READS_WIIMOTE_INPUT,
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COUNT,
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};
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@ -75,6 +75,7 @@ public:
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void SetEnabled(bool is_enabled);
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static constexpr u8 I2C_ADDR = 0x58;
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static constexpr int CAMERA_DATA_BYTES = 36;
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private:
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// TODO: some of this memory is write-only and should return error 7.
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@ -89,7 +90,7 @@ private:
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u8 mode;
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u8 unk[3];
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// addr: 0x37
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u8 camera_data[36];
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u8 camera_data[CAMERA_DATA_BYTES];
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u8 unk2[165];
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};
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#pragma pack(pop)
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@ -12,6 +12,7 @@
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#include "Common/Logging/Log.h"
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#include "Common/MsgHandler.h"
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#include "Common/Swap.h"
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#include "Core/Analytics.h"
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#include "Core/Core.h"
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#include "Core/HW/WiimoteCommon/WiimoteHid.h"
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#include "Core/HW/WiimoteEmu/WiimoteEmu.h"
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@ -507,6 +508,19 @@ bool Wiimote::ProcessReadDataRequest()
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break;
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}
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// It is possible to bypass data reporting and directly read extension input.
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// While I am not aware of any games that actually do this,
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// our NetPlay and TAS methods are completely unprepared for it.
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const bool is_reading_ext = EncryptedExtension::I2C_ADDR == m_read_request.slave_address &&
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m_read_request.address < EncryptedExtension::CONTROLLER_DATA_BYTES;
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const bool is_reading_ir =
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CameraLogic::I2C_ADDR == m_read_request.slave_address &&
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m_read_request.address < CameraLogic::REPORT_DATA_OFFSET + CameraLogic::CAMERA_DATA_BYTES &&
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m_read_request.address + m_read_request.size > CameraLogic::REPORT_DATA_OFFSET;
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if (is_reading_ext || is_reading_ir)
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DolphinAnalytics::Instance()->ReportGameQuirk(GameQuirk::DIRECTLY_READS_WIIMOTE_INPUT);
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// Top byte of address is ignored on the bus, but it IS maintained in the read-reply.
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auto const bytes_read = m_i2c_bus.BusRead(
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m_read_request.slave_address, (u8)m_read_request.address, bytes_to_read, reply.data);
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@ -62,6 +62,7 @@ class EncryptedExtension : public Extension
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{
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public:
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static constexpr u8 I2C_ADDR = 0x52;
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static constexpr int CONTROLLER_DATA_BYTES = 21;
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using Extension::Extension;
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@ -76,7 +77,7 @@ protected:
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struct Register
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{
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// 21 bytes of possible extension data
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u8 controller_data[21];
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u8 controller_data[CONTROLLER_DATA_BYTES];
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u8 unknown2[11];
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