dolphin/Source/Core/VideoCommon/PixelEngine.cpp

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// Copyright 2008 Dolphin Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
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// http://www.nvidia.com/object/General_FAQ.html#t6 !!!!!
#include "VideoCommon/PixelEngine.h"
#include <mutex>
#include "Common/ChunkFile.h"
#include "Common/CommonTypes.h"
#include "Common/Logging/Log.h"
#include "Core/ConfigManager.h"
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#include "Core/Core.h"
#include "Core/CoreTiming.h"
#include "Core/HW/MMIO.h"
#include "Core/HW/ProcessorInterface.h"
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#include "VideoCommon/BoundingBox.h"
#include "VideoCommon/Fifo.h"
#include "VideoCommon/PerfQueryBase.h"
#include "VideoCommon/VideoBackendBase.h"
namespace PixelEngine
{
union UPEZConfReg
{
u16 Hex;
struct
{
u16 ZCompEnable : 1; // Z Comparator Enable
u16 Function : 3;
u16 ZUpdEnable : 1;
u16 : 11;
};
};
union UPEAlphaConfReg
{
u16 Hex;
struct
{
u16 BMMath : 1; // GX_BM_BLEND || GX_BM_SUBSTRACT
u16 BMLogic : 1; // GX_BM_LOGIC
u16 Dither : 1;
u16 ColorUpdEnable : 1;
u16 AlphaUpdEnable : 1;
u16 DstFactor : 3;
u16 SrcFactor : 3;
u16 Substract : 1; // Additive mode by default
u16 BlendOperator : 4;
};
};
union UPEDstAlphaConfReg
{
u16 Hex;
struct
{
u16 DstAlpha : 8;
u16 Enable : 1;
u16 : 7;
};
};
union UPEAlphaModeConfReg
{
u16 Hex;
struct
{
u16 Threshold : 8;
u16 CompareMode : 8;
};
};
// fifo Control Register
union UPECtrlReg
{
struct
{
u16 PETokenEnable : 1;
u16 PEFinishEnable : 1;
u16 PEToken : 1; // write only
u16 PEFinish : 1; // write only
u16 : 12;
};
u16 Hex;
UPECtrlReg() { Hex = 0; }
UPECtrlReg(u16 _hex) { Hex = _hex; }
};
// STATE_TO_SAVE
static UPEZConfReg m_ZConf;
static UPEAlphaConfReg m_AlphaConf;
static UPEDstAlphaConfReg m_DstAlphaConf;
static UPEAlphaModeConfReg m_AlphaModeConf;
static UPEAlphaReadReg m_AlphaRead;
static UPECtrlReg m_Control;
static std::mutex s_token_finish_mutex;
static u16 s_token;
static u16 s_token_pending;
static bool s_token_interrupt_pending;
static bool s_finish_interrupt_pending;
static bool s_event_raised;
static bool s_signal_token_interrupt;
static bool s_signal_finish_interrupt;
static CoreTiming::EventType* et_SetTokenFinishOnMainThread;
enum
{
INT_CAUSE_PE_TOKEN = 0x200, // GP Token
INT_CAUSE_PE_FINISH = 0x400, // GP Finished
};
void DoState(PointerWrap& p)
{
p.Do(m_ZConf);
p.Do(m_AlphaConf);
p.Do(m_DstAlphaConf);
p.Do(m_AlphaModeConf);
p.Do(m_AlphaRead);
p.DoPOD(m_Control);
p.Do(s_token);
p.Do(s_token_pending);
p.Do(s_token_interrupt_pending);
p.Do(s_finish_interrupt_pending);
p.Do(s_event_raised);
p.Do(s_signal_token_interrupt);
p.Do(s_signal_finish_interrupt);
}
static void UpdateInterrupts();
static void SetTokenFinish_OnMainThread(u64 userdata, s64 cyclesLate);
void Init()
{
m_Control.Hex = 0;
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m_ZConf.Hex = 0;
m_AlphaConf.Hex = 0;
m_DstAlphaConf.Hex = 0;
m_AlphaModeConf.Hex = 0;
m_AlphaRead.Hex = 0;
s_token = 0;
s_token_pending = 0;
s_token_interrupt_pending = false;
s_finish_interrupt_pending = false;
s_event_raised = false;
s_signal_token_interrupt = false;
s_signal_finish_interrupt = false;
et_SetTokenFinishOnMainThread =
CoreTiming::RegisterEvent("SetTokenFinish", SetTokenFinish_OnMainThread);
}
void RegisterMMIO(MMIO::Mapping* mmio, u32 base)
{
// Directly mapped registers.
struct
{
u32 addr;
u16* ptr;
} directly_mapped_vars[] = {
{PE_ZCONF, &m_ZConf.Hex},
{PE_ALPHACONF, &m_AlphaConf.Hex},
{PE_DSTALPHACONF, &m_DstAlphaConf.Hex},
{PE_ALPHAMODE, &m_AlphaModeConf.Hex},
{PE_ALPHAREAD, &m_AlphaRead.Hex},
};
for (auto& mapped_var : directly_mapped_vars)
{
mmio->Register(base | mapped_var.addr, MMIO::DirectRead<u16>(mapped_var.ptr),
MMIO::DirectWrite<u16>(mapped_var.ptr));
}
// Performance queries registers: read only, need to call the video backend
// to get the results.
struct
{
u32 addr;
PerfQueryType pqtype;
} pq_regs[] = {
{PE_PERF_ZCOMP_INPUT_ZCOMPLOC_L, PQ_ZCOMP_INPUT_ZCOMPLOC},
{PE_PERF_ZCOMP_OUTPUT_ZCOMPLOC_L, PQ_ZCOMP_OUTPUT_ZCOMPLOC},
{PE_PERF_ZCOMP_INPUT_L, PQ_ZCOMP_INPUT},
{PE_PERF_ZCOMP_OUTPUT_L, PQ_ZCOMP_OUTPUT},
{PE_PERF_BLEND_INPUT_L, PQ_BLEND_INPUT},
{PE_PERF_EFB_COPY_CLOCKS_L, PQ_EFB_COPY_CLOCKS},
};
for (auto& pq_reg : pq_regs)
{
mmio->Register(base | pq_reg.addr, MMIO::ComplexRead<u16>([pq_reg](u32) {
return g_video_backend->Video_GetQueryResult(pq_reg.pqtype) & 0xFFFF;
}),
MMIO::InvalidWrite<u16>());
mmio->Register(base | (pq_reg.addr + 2), MMIO::ComplexRead<u16>([pq_reg](u32) {
return g_video_backend->Video_GetQueryResult(pq_reg.pqtype) >> 16;
}),
MMIO::InvalidWrite<u16>());
}
// Control register
mmio->Register(base | PE_CTRL_REGISTER, MMIO::DirectRead<u16>(&m_Control.Hex),
MMIO::ComplexWrite<u16>([](u32, u16 val) {
UPECtrlReg tmpCtrl(val);
if (tmpCtrl.PEToken)
s_signal_token_interrupt = false;
if (tmpCtrl.PEFinish)
s_signal_finish_interrupt = false;
m_Control.PETokenEnable = tmpCtrl.PETokenEnable;
m_Control.PEFinishEnable = tmpCtrl.PEFinishEnable;
m_Control.PEToken = 0; // this flag is write only
m_Control.PEFinish = 0; // this flag is write only
DEBUG_LOG_FMT(PIXELENGINE, "(w16) CTRL_REGISTER: {:#06x}", val);
UpdateInterrupts();
}));
// Token register, readonly.
mmio->Register(base | PE_TOKEN_REG, MMIO::DirectRead<u16>(&s_token), MMIO::InvalidWrite<u16>());
// BBOX registers, readonly and need to update a flag.
for (int i = 0; i < 4; ++i)
{
mmio->Register(base | (PE_BBOX_LEFT + 2 * i), MMIO::ComplexRead<u16>([i](u32) {
BoundingBox::Disable();
return g_video_backend->Video_GetBoundingBox(i);
}),
MMIO::InvalidWrite<u16>());
}
}
static void UpdateInterrupts()
{
// check if there is a token-interrupt
ProcessorInterface::SetInterrupt(INT_CAUSE_PE_TOKEN,
s_signal_token_interrupt && m_Control.PETokenEnable);
// check if there is a finish-interrupt
ProcessorInterface::SetInterrupt(INT_CAUSE_PE_FINISH,
s_signal_finish_interrupt && m_Control.PEFinishEnable);
}
static void SetTokenFinish_OnMainThread(u64 userdata, s64 cyclesLate)
{
std::unique_lock<std::mutex> lk(s_token_finish_mutex);
s_event_raised = false;
s_token = s_token_pending;
if (s_token_interrupt_pending)
{
s_token_interrupt_pending = false;
s_signal_token_interrupt = true;
UpdateInterrupts();
}
if (s_finish_interrupt_pending)
{
s_finish_interrupt_pending = false;
s_signal_finish_interrupt = true;
UpdateInterrupts();
lk.unlock();
Core::FrameUpdateOnCPUThread();
}
}
// Raise the event handler above on the CPU thread.
// s_token_finish_mutex must be locked.
// THIS IS EXECUTED FROM VIDEO THREAD
static void RaiseEvent()
{
if (s_event_raised)
return;
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s_event_raised = true;
CoreTiming::FromThread from = CoreTiming::FromThread::NON_CPU;
if (!SConfig::GetInstance().bCPUThread || Fifo::UseDeterministicGPUThread())
from = CoreTiming::FromThread::CPU;
CoreTiming::ScheduleEvent(0, et_SetTokenFinishOnMainThread, 0, from);
}
// SetToken
// THIS IS EXECUTED FROM VIDEO THREAD
void SetToken(const u16 token, const bool interrupt)
{
DEBUG_LOG_FMT(PIXELENGINE, "VIDEO Backend raises INT_CAUSE_PE_TOKEN (btw, token: {:04x})", token);
std::lock_guard<std::mutex> lk(s_token_finish_mutex);
s_token_pending = token;
s_token_interrupt_pending |= interrupt;
RaiseEvent();
}
// SetFinish
// THIS IS EXECUTED FROM VIDEO THREAD (BPStructs.cpp) when a new frame has been drawn
void SetFinish()
{
DEBUG_LOG_FMT(PIXELENGINE, "VIDEO Set Finish");
std::lock_guard<std::mutex> lk(s_token_finish_mutex);
s_finish_interrupt_pending |= true;
RaiseEvent();
}
UPEAlphaReadReg GetAlphaReadMode()
{
return m_AlphaRead;
}
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} // namespace PixelEngine