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https://github.com/dolphin-emu/dolphin.git
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255 lines
7.6 KiB
C++
255 lines
7.6 KiB
C++
// Copyright 2008 Dolphin Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#include "VideoCommon/PixelEngine.h"
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#include <mutex>
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#include "Common/BitField.h"
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#include "Common/ChunkFile.h"
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#include "Common/CommonTypes.h"
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#include "Common/Logging/Log.h"
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#include "Core/ConfigManager.h"
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#include "Core/Core.h"
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#include "Core/CoreTiming.h"
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#include "Core/HW/MMIO.h"
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#include "Core/HW/ProcessorInterface.h"
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#include "Core/System.h"
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#include "VideoCommon/BoundingBox.h"
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#include "VideoCommon/Fifo.h"
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#include "VideoCommon/PerfQueryBase.h"
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#include "VideoCommon/VideoBackendBase.h"
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namespace PixelEngine
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{
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enum
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{
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INT_CAUSE_PE_TOKEN = 0x200, // GP Token
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INT_CAUSE_PE_FINISH = 0x400, // GP Finished
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};
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PixelEngineManager::PixelEngineManager(Core::System& system) : m_system{system}
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{
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}
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void PixelEngineManager::DoState(PointerWrap& p)
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{
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p.Do(m_z_conf);
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p.Do(m_alpha_conf);
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p.Do(m_dst_alpha_conf);
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p.Do(m_alpha_mode_conf);
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p.Do(m_alpha_read);
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p.Do(m_control);
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p.Do(m_token);
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p.Do(m_token_pending);
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p.Do(m_token_interrupt_pending);
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p.Do(m_finish_interrupt_pending);
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p.Do(m_event_raised);
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p.Do(m_signal_token_interrupt);
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p.Do(m_signal_finish_interrupt);
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}
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void PixelEngineManager::Init()
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{
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m_control.hex = 0;
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m_z_conf.hex = 0;
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m_alpha_conf.hex = 0;
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m_dst_alpha_conf.hex = 0;
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m_alpha_mode_conf.hex = 0;
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m_alpha_read.hex = 0;
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m_token = 0;
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m_token_pending = 0;
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m_token_interrupt_pending = false;
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m_finish_interrupt_pending = false;
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m_event_raised = false;
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m_signal_token_interrupt = false;
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m_signal_finish_interrupt = false;
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m_event_type_set_token_finish =
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m_system.GetCoreTiming().RegisterEvent("SetTokenFinish", SetTokenFinish_OnMainThread_Static);
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}
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void PixelEngineManager::RegisterMMIO(MMIO::Mapping* mmio, u32 base)
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{
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// Directly mapped registers.
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struct
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{
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u32 addr;
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u16* ptr;
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} directly_mapped_vars[] = {
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{PE_ZCONF, &m_z_conf.hex},
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{PE_ALPHACONF, &m_alpha_conf.hex},
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{PE_DSTALPHACONF, &m_dst_alpha_conf.hex},
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{PE_ALPHAMODE, &m_alpha_mode_conf.hex},
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{PE_ALPHAREAD, &m_alpha_read.hex},
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};
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for (auto& mapped_var : directly_mapped_vars)
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{
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mmio->Register(base | mapped_var.addr, MMIO::DirectRead<u16>(mapped_var.ptr),
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MMIO::DirectWrite<u16>(mapped_var.ptr));
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}
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// Performance queries registers: read only, need to call the video backend
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// to get the results.
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struct
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{
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u32 addr;
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PerfQueryType pqtype;
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} pq_regs[] = {
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{PE_PERF_ZCOMP_INPUT_ZCOMPLOC_L, PQ_ZCOMP_INPUT_ZCOMPLOC},
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{PE_PERF_ZCOMP_OUTPUT_ZCOMPLOC_L, PQ_ZCOMP_OUTPUT_ZCOMPLOC},
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{PE_PERF_ZCOMP_INPUT_L, PQ_ZCOMP_INPUT},
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{PE_PERF_ZCOMP_OUTPUT_L, PQ_ZCOMP_OUTPUT},
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{PE_PERF_BLEND_INPUT_L, PQ_BLEND_INPUT},
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{PE_PERF_EFB_COPY_CLOCKS_L, PQ_EFB_COPY_CLOCKS},
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};
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for (auto& pq_reg : pq_regs)
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{
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mmio->Register(base | pq_reg.addr, MMIO::ComplexRead<u16>([pq_reg](Core::System&, u32) {
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return g_video_backend->Video_GetQueryResult(pq_reg.pqtype) & 0xFFFF;
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}),
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MMIO::InvalidWrite<u16>());
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mmio->Register(base | (pq_reg.addr + 2), MMIO::ComplexRead<u16>([pq_reg](Core::System&, u32) {
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return g_video_backend->Video_GetQueryResult(pq_reg.pqtype) >> 16;
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}),
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MMIO::InvalidWrite<u16>());
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}
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// Control register
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mmio->Register(base | PE_CTRL_REGISTER, MMIO::DirectRead<u16>(&m_control.hex),
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MMIO::ComplexWrite<u16>([](Core::System& system, u32, u16 val) {
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auto& pe = system.GetPixelEngine();
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UPECtrlReg tmpCtrl{.hex = val};
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if (tmpCtrl.pe_token)
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pe.m_signal_token_interrupt = false;
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if (tmpCtrl.pe_finish)
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pe.m_signal_finish_interrupt = false;
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pe.m_control.pe_token_enable = tmpCtrl.pe_token_enable.Value();
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pe.m_control.pe_finish_enable = tmpCtrl.pe_finish_enable.Value();
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pe.m_control.pe_token = false; // this flag is write only
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pe.m_control.pe_finish = false; // this flag is write only
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DEBUG_LOG_FMT(PIXELENGINE, "(w16) CTRL_REGISTER: {:#06x}", val);
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pe.UpdateInterrupts();
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}));
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// Token register, readonly.
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mmio->Register(base | PE_TOKEN_REG, MMIO::DirectRead<u16>(&m_token), MMIO::InvalidWrite<u16>());
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// BBOX registers, readonly and need to update a flag.
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for (int i = 0; i < 4; ++i)
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{
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mmio->Register(base | (PE_BBOX_LEFT + 2 * i),
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MMIO::ComplexRead<u16>([i](Core::System& system, u32) {
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g_bounding_box->Disable(system.GetPixelShaderManager());
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return g_video_backend->Video_GetBoundingBox(i);
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}),
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MMIO::InvalidWrite<u16>());
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}
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}
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void PixelEngineManager::UpdateInterrupts()
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{
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auto& processor_interface = m_system.GetProcessorInterface();
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// check if there is a token-interrupt
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processor_interface.SetInterrupt(INT_CAUSE_PE_TOKEN,
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m_signal_token_interrupt && m_control.pe_token_enable);
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// check if there is a finish-interrupt
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processor_interface.SetInterrupt(INT_CAUSE_PE_FINISH,
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m_signal_finish_interrupt && m_control.pe_finish_enable);
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}
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void PixelEngineManager::SetTokenFinish_OnMainThread_Static(Core::System& system, u64 userdata,
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s64 cycles_late)
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{
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system.GetPixelEngine().SetTokenFinish_OnMainThread(userdata, cycles_late);
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}
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void PixelEngineManager::SetTokenFinish_OnMainThread(u64 userdata, s64 cycles_late)
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{
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std::unique_lock lk(m_token_finish_mutex);
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m_event_raised = false;
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m_token = m_token_pending;
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if (m_token_interrupt_pending)
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{
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m_token_interrupt_pending = false;
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m_signal_token_interrupt = true;
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UpdateInterrupts();
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}
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if (m_finish_interrupt_pending)
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{
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m_finish_interrupt_pending = false;
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m_signal_finish_interrupt = true;
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UpdateInterrupts();
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lk.unlock();
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Core::FrameUpdateOnCPUThread();
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}
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}
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// Raise the event handler above on the CPU thread.
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// m_token_finish_mutex must be locked.
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// THIS IS EXECUTED FROM VIDEO THREAD
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void PixelEngineManager::RaiseEvent(int cycles_into_future)
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{
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if (m_event_raised)
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return;
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m_event_raised = true;
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CoreTiming::FromThread from = CoreTiming::FromThread::NON_CPU;
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s64 cycles = 0; // we don't care about timings for dual core mode.
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if (!m_system.IsDualCoreMode() || m_system.GetFifo().UseDeterministicGPUThread())
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{
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from = CoreTiming::FromThread::CPU;
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// Hack: Dolphin's single-core gpu timings are way too fast. Enforce a minimum delay to give
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// games time to setup any interrupt state
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cycles = std::max(500, cycles_into_future);
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}
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m_system.GetCoreTiming().ScheduleEvent(cycles, m_event_type_set_token_finish, 0, from);
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}
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// SetToken
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// THIS IS EXECUTED FROM VIDEO THREAD
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void PixelEngineManager::SetToken(const u16 token, const bool interrupt, int cycles_into_future)
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{
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DEBUG_LOG_FMT(PIXELENGINE, "VIDEO Backend raises INT_CAUSE_PE_TOKEN (btw, token: {:04x})", token);
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std::lock_guard lk(m_token_finish_mutex);
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m_token_pending = token;
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m_token_interrupt_pending |= interrupt;
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RaiseEvent(cycles_into_future);
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}
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// SetFinish
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// THIS IS EXECUTED FROM VIDEO THREAD (BPStructs.cpp) when a new frame has been drawn
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void PixelEngineManager::SetFinish(int cycles_into_future)
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{
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DEBUG_LOG_FMT(PIXELENGINE, "VIDEO Set Finish");
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std::lock_guard lk(m_token_finish_mutex);
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m_finish_interrupt_pending |= true;
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RaiseEvent(cycles_into_future);
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}
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} // namespace PixelEngine
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