mirror of
https://github.com/citra-emu/citra.git
synced 2024-12-21 08:50:07 +00:00
260 lines
7.8 KiB
C++
260 lines
7.8 KiB
C++
// Copyright 2016 Citra Emulator Project
|
|
// Licensed under GPLv2 or any later version
|
|
// Refer to the license.txt file included.
|
|
|
|
#pragma once
|
|
|
|
#include <array>
|
|
#include "boost/serialization/split_member.hpp"
|
|
#include "common/bit_field.h"
|
|
#include "common/common_types.h"
|
|
#include "common/vector_math.h"
|
|
#include "video_core/video_core.h"
|
|
#include "video_core/geometry_pipeline.h"
|
|
#include "video_core/primitive_assembly.h"
|
|
#include "video_core/regs.h"
|
|
#include "video_core/shader/shader.h"
|
|
|
|
// Boost::serialization doesn't like union types for some reason,
|
|
// so we need to mark arrays of union values with a special serialization method
|
|
template<typename Value, size_t Size>
|
|
struct UnionArray : public std::array<Value, Size> { };
|
|
|
|
namespace boost::serialization {
|
|
|
|
template<class Archive, typename Value, size_t Size>
|
|
void serialize(Archive& ar, UnionArray<Value, Size>& array, const unsigned int version)
|
|
{
|
|
static_assert(sizeof(Value) == sizeof(u32));
|
|
ar & *static_cast<u32 (*)[Size]>(static_cast<void *>(array.data()));
|
|
}
|
|
|
|
}
|
|
|
|
namespace Pica {
|
|
|
|
/// Struct used to describe current Pica state
|
|
struct State {
|
|
State();
|
|
void Reset();
|
|
|
|
/// Pica registers
|
|
Regs regs;
|
|
|
|
Shader::ShaderSetup vs;
|
|
Shader::ShaderSetup gs;
|
|
|
|
Shader::AttributeBuffer input_default_attributes;
|
|
|
|
struct ProcTex {
|
|
union ValueEntry {
|
|
u32 raw;
|
|
|
|
// LUT value, encoded as 12-bit fixed point, with 12 fraction bits
|
|
BitField<0, 12, u32> value; // 0.0.12 fixed point
|
|
|
|
// Difference between two entry values. Used for efficient interpolation.
|
|
// 0.0.12 fixed point with two's complement. The range is [-0.5, 0.5).
|
|
// Note: the type of this is different from the one of lighting LUT
|
|
BitField<12, 12, s32> difference;
|
|
|
|
float ToFloat() const {
|
|
return static_cast<float>(value) / 4095.f;
|
|
}
|
|
|
|
float DiffToFloat() const {
|
|
return static_cast<float>(difference) / 4095.f;
|
|
}
|
|
};
|
|
|
|
union ColorEntry {
|
|
u32 raw;
|
|
BitField<0, 8, u32> r;
|
|
BitField<8, 8, u32> g;
|
|
BitField<16, 8, u32> b;
|
|
BitField<24, 8, u32> a;
|
|
|
|
Common::Vec4<u8> ToVector() const {
|
|
return {static_cast<u8>(r), static_cast<u8>(g), static_cast<u8>(b),
|
|
static_cast<u8>(a)};
|
|
}
|
|
};
|
|
|
|
union ColorDifferenceEntry {
|
|
u32 raw;
|
|
BitField<0, 8, s32> r; // half of the difference between two ColorEntry
|
|
BitField<8, 8, s32> g;
|
|
BitField<16, 8, s32> b;
|
|
BitField<24, 8, s32> a;
|
|
|
|
Common::Vec4<s32> ToVector() const {
|
|
return Common::Vec4<s32>{r, g, b, a} * 2;
|
|
}
|
|
};
|
|
|
|
UnionArray<ValueEntry, 128> noise_table;
|
|
UnionArray<ValueEntry, 128> color_map_table;
|
|
UnionArray<ValueEntry, 128> alpha_map_table;
|
|
UnionArray<ColorEntry, 256> color_table;
|
|
UnionArray<ColorDifferenceEntry, 256> color_diff_table;
|
|
|
|
private:
|
|
friend class boost::serialization::access;
|
|
template<class Archive>
|
|
void serialize(Archive & ar, const unsigned int file_version)
|
|
{
|
|
ar & noise_table;
|
|
ar & color_map_table;
|
|
ar & alpha_map_table;
|
|
ar & color_table;
|
|
ar & color_diff_table;
|
|
}
|
|
} proctex;
|
|
|
|
struct Lighting {
|
|
union LutEntry {
|
|
// Used for raw access
|
|
u32 raw;
|
|
|
|
// LUT value, encoded as 12-bit fixed point, with 12 fraction bits
|
|
BitField<0, 12, u32> value; // 0.0.12 fixed point
|
|
|
|
// Used for efficient interpolation.
|
|
BitField<12, 11, u32> difference; // 0.0.11 fixed point
|
|
BitField<23, 1, u32> neg_difference;
|
|
|
|
float ToFloat() const {
|
|
return static_cast<float>(value) / 4095.f;
|
|
}
|
|
|
|
float DiffToFloat() const {
|
|
float diff = static_cast<float>(difference) / 2047.f;
|
|
return neg_difference ? -diff : diff;
|
|
}
|
|
|
|
template<class Archive>
|
|
void serialize(Archive & ar, const unsigned int file_version)
|
|
{
|
|
ar & raw;
|
|
}
|
|
};
|
|
|
|
std::array<UnionArray<LutEntry, 256>, 24> luts;
|
|
} lighting;
|
|
|
|
struct {
|
|
union LutEntry {
|
|
// Used for raw access
|
|
u32 raw;
|
|
|
|
BitField<0, 13, s32> difference; // 1.1.11 fixed point
|
|
BitField<13, 11, u32> value; // 0.0.11 fixed point
|
|
|
|
float ToFloat() const {
|
|
return static_cast<float>(value) / 2047.0f;
|
|
}
|
|
|
|
float DiffToFloat() const {
|
|
return static_cast<float>(difference) / 2047.0f;
|
|
}
|
|
};
|
|
|
|
UnionArray<LutEntry, 128> lut;
|
|
} fog;
|
|
|
|
/// Current Pica command list
|
|
struct {
|
|
PAddr addr; // This exists only for serialization
|
|
const u32* head_ptr;
|
|
const u32* current_ptr;
|
|
u32 length;
|
|
} cmd_list;
|
|
|
|
/// Struct used to describe immediate mode rendering state
|
|
struct ImmediateModeState {
|
|
// Used to buffer partial vertices for immediate-mode rendering.
|
|
Shader::AttributeBuffer input_vertex;
|
|
// Index of the next attribute to be loaded into `input_vertex`.
|
|
u32 current_attribute = 0;
|
|
// Indicates the immediate mode just started and the geometry pipeline needs to reconfigure
|
|
bool reset_geometry_pipeline = true;
|
|
|
|
private:
|
|
friend class boost::serialization::access;
|
|
template<class Archive>
|
|
void serialize(Archive & ar, const unsigned int file_version)
|
|
{
|
|
ar & input_vertex;
|
|
ar & current_attribute;
|
|
ar & reset_geometry_pipeline;
|
|
}
|
|
|
|
} immediate;
|
|
|
|
// the geometry shader needs to be kept in the global state because some shaders relie on
|
|
// preserved register value across shader invocation.
|
|
// TODO: also bring the three vertex shader units here and implement the shader scheduler.
|
|
Shader::GSUnitState gs_unit;
|
|
|
|
GeometryPipeline geometry_pipeline;
|
|
|
|
// This is constructed with a dummy triangle topology
|
|
PrimitiveAssembler<Shader::OutputVertex> primitive_assembler;
|
|
|
|
int vs_float_regs_counter = 0;
|
|
u32 vs_uniform_write_buffer[4]{};
|
|
|
|
int gs_float_regs_counter = 0;
|
|
u32 gs_uniform_write_buffer[4]{};
|
|
|
|
int default_attr_counter = 0;
|
|
u32 default_attr_write_buffer[3]{};
|
|
|
|
private:
|
|
|
|
friend class boost::serialization::access;
|
|
template<class Archive>
|
|
void serialize(Archive & ar, const unsigned int file_version)
|
|
{
|
|
ar & regs.reg_array;
|
|
ar & vs;
|
|
ar & gs;
|
|
ar & input_default_attributes;
|
|
ar & proctex;
|
|
ar & lighting.luts;
|
|
ar & fog.lut;
|
|
ar & cmd_list.addr;
|
|
ar & cmd_list.length;
|
|
ar & immediate;
|
|
ar & gs_unit;
|
|
ar & geometry_pipeline;
|
|
// ar & primitive_assembler;
|
|
ar & vs_float_regs_counter;
|
|
ar & vs_uniform_write_buffer;
|
|
ar & gs_float_regs_counter;
|
|
ar & gs_uniform_write_buffer;
|
|
ar & default_attr_counter;
|
|
ar & default_attr_write_buffer;
|
|
boost::serialization::split_member(ar, *this, file_version);
|
|
}
|
|
|
|
template<class Archive>
|
|
void save(Archive & ar, const unsigned int file_version) const
|
|
{
|
|
ar << static_cast<u32>(cmd_list.current_ptr - cmd_list.head_ptr);
|
|
}
|
|
|
|
template<class Archive>
|
|
void load(Archive & ar, const unsigned int file_version)
|
|
{
|
|
u32 offset{};
|
|
ar >> offset;
|
|
cmd_list.head_ptr = (u32*)VideoCore::g_memory->GetPhysicalPointer(cmd_list.addr);
|
|
cmd_list.current_ptr = cmd_list.head_ptr + offset;
|
|
}
|
|
};
|
|
|
|
extern State g_state; ///< Current Pica state
|
|
|
|
} // namespace Pica
|