305 changes: 87 additions & 218 deletions Source/Core/VideoCommon/PixelEngine.cpp

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168 changes: 161 additions & 7 deletions Source/Core/VideoCommon/PixelEngine.h
Expand Up @@ -3,10 +3,21 @@

#pragma once

#include <mutex>

#include "Common/BitField.h"
#include "Common/CommonTypes.h"

class PointerWrap;

namespace Core
{
class System;
}
namespace CoreTiming
{
struct EventType;
}
namespace MMIO
{
class Mapping;
Expand Down Expand Up @@ -54,14 +65,157 @@ enum class AlphaReadMode : u16
ReadNone = 2, // Always read the real alpha value
};

void Init();
void DoState(PointerWrap& p);
// Note: These enums are (assumed to be) identical to the one in BPMemory, but the base type is set
// to u16 instead of u32 for BitField
enum class CompareMode : u16
{
Never = 0,
Less = 1,
Equal = 2,
LEqual = 3,
Greater = 4,
NEqual = 5,
GEqual = 6,
Always = 7
};

union UPEZConfReg
{
u16 hex = 0;
BitField<0, 1, bool, u16> z_comparator_enable;
BitField<1, 3, CompareMode, u16> function;
BitField<4, 1, bool, u16> z_update_enable;
};

enum class SrcBlendFactor : u16
{
Zero = 0,
One = 1,
DstClr = 2,
InvDstClr = 3,
SrcAlpha = 4,
InvSrcAlpha = 5,
DstAlpha = 6,
InvDstAlpha = 7
};

void RegisterMMIO(MMIO::Mapping* mmio, u32 base);
enum class DstBlendFactor : u16
{
Zero = 0,
One = 1,
SrcClr = 2,
InvSrcClr = 3,
SrcAlpha = 4,
InvSrcAlpha = 5,
DstAlpha = 6,
InvDstAlpha = 7
};

// gfx backend support
void SetToken(const u16 token, const bool interrupt, int cycle_delay);
void SetFinish(int cycle_delay);
AlphaReadMode GetAlphaReadMode();
enum class LogicOp : u16
{
Clear = 0,
And = 1,
AndReverse = 2,
Copy = 3,
AndInverted = 4,
NoOp = 5,
Xor = 6,
Or = 7,
Nor = 8,
Equiv = 9,
Invert = 10,
OrReverse = 11,
CopyInverted = 12,
OrInverted = 13,
Nand = 14,
Set = 15
};

union UPEAlphaConfReg
{
u16 hex = 0;
BitField<0, 1, bool, u16> blend; // Set for GX_BM_BLEND or GX_BM_SUBTRACT
BitField<1, 1, bool, u16> logic; // Set for GX_BM_LOGIC
BitField<2, 1, bool, u16> dither;
BitField<3, 1, bool, u16> color_update_enable;
BitField<4, 1, bool, u16> alpha_update_enable;
BitField<5, 3, DstBlendFactor, u16> dst_factor;
BitField<8, 3, SrcBlendFactor, u16> src_factor;
BitField<11, 1, bool, u16> subtract; // Set for GX_BM_SUBTRACT
BitField<12, 4, LogicOp, u16> logic_op;
};

union UPEDstAlphaConfReg
{
u16 hex = 0;
BitField<0, 8, u8, u16> alpha;
BitField<8, 1, bool, u16> enable;
};

union UPEAlphaModeConfReg
{
u16 hex = 0;
BitField<0, 8, u8, u16> threshold;
// Yagcd and libogc use 8 bits for this, but the enum only needs 3
BitField<8, 3, CompareMode, u16> compare_mode;
};

union UPEAlphaReadReg
{
u16 hex = 0;
BitField<0, 2, AlphaReadMode, u16> read_mode;
};

// fifo Control Register
union UPECtrlReg
{
u16 hex = 0;
BitField<0, 1, bool, u16> pe_token_enable;
BitField<1, 1, bool, u16> pe_finish_enable;
BitField<2, 1, bool, u16> pe_token; // Write only
BitField<3, 1, bool, u16> pe_finish; // Write only
};

class PixelEngineManager
{
public:
void Init(Core::System& system);
void DoState(PointerWrap& p);

void RegisterMMIO(MMIO::Mapping* mmio, u32 base);

// gfx backend support
void SetToken(Core::System& system, const u16 token, const bool interrupt, int cycle_delay);
void SetFinish(Core::System& system, int cycle_delay);
AlphaReadMode GetAlphaReadMode() const { return m_alpha_read.read_mode; }

private:
void RaiseEvent(Core::System& system, int cycles_into_future);
void UpdateInterrupts();
void SetTokenFinish_OnMainThread(Core::System& system, u64 userdata, s64 cycles_late);

static void SetTokenFinish_OnMainThread_Static(Core::System& system, u64 userdata,
s64 cycles_late);

// STATE_TO_SAVE
UPEZConfReg m_z_conf;
UPEAlphaConfReg m_alpha_conf;
UPEDstAlphaConfReg m_dst_alpha_conf;
UPEAlphaModeConfReg m_alpha_mode_conf;
UPEAlphaReadReg m_alpha_read;
UPECtrlReg m_control;

std::mutex m_token_finish_mutex;
u16 m_token = 0;
u16 m_token_pending = 0;
bool m_token_interrupt_pending = false;
bool m_finish_interrupt_pending = false;
bool m_event_raised = false;

bool m_signal_token_interrupt = false;
bool m_signal_finish_interrupt = false;

CoreTiming::EventType* m_event_type_set_token_finish = nullptr;
};

} // namespace PixelEngine
3 changes: 2 additions & 1 deletion Source/Core/VideoCommon/RenderBase.cpp
Expand Up @@ -278,7 +278,8 @@ u32 Renderer::AccessEFB(EFBAccessType type, u32 x, u32 y, u32 poke_data)
}

// check what to do with the alpha channel (GX_PokeAlphaRead)
PixelEngine::AlphaReadMode alpha_read_mode = PixelEngine::GetAlphaReadMode();
PixelEngine::AlphaReadMode alpha_read_mode =
Core::System::GetInstance().GetPixelEngine().GetAlphaReadMode();

if (alpha_read_mode == PixelEngine::AlphaReadMode::ReadNone)
{
Expand Down
2 changes: 1 addition & 1 deletion Source/Core/VideoCommon/VideoBackendBase.cpp
Expand Up @@ -325,7 +325,7 @@ void VideoBackendBase::InitializeShared()
auto& command_processor = system.GetCommandProcessor();
command_processor.Init(system);
system.GetFifo().Init(system);
PixelEngine::Init();
system.GetPixelEngine().Init(system);
BPInit();
VertexLoaderManager::Init();
VertexShaderManager::Init();
Expand Down
2 changes: 1 addition & 1 deletion Source/Core/VideoCommon/VideoState.cpp
Expand Up @@ -68,7 +68,7 @@ void VideoCommon_DoState(PointerWrap& p)
command_processor.DoState(p);
p.DoMarker("CommandProcessor");

PixelEngine::DoState(p);
system.GetPixelEngine().DoState(p);
p.DoMarker("PixelEngine");

// the old way of replaying current bpmem as writes to push side effects to pixel shader manager
Expand Down