From 45788b9c825c5361cca5614465fdec64ab7a5cd5 Mon Sep 17 00:00:00 2001
From: Hamish Milne <hamishmilne83@gmail.com>
Date: Thu, 8 Aug 2019 05:25:24 +0100
Subject: [PATCH] Added shader state serialization

---
 src/common/vector_math.h       | 28 ++++++++++++++++++++++++++++
 src/video_core/pica_state.h    | 30 ++++++++++++++++--------------
 src/video_core/pica_types.h    |  8 ++++++++
 src/video_core/shader/shader.h | 24 ++++++++++++++++++++++++
 4 files changed, 76 insertions(+), 14 deletions(-)

diff --git a/src/common/vector_math.h b/src/common/vector_math.h
index ba36744fc..171d4ebfd 100644
--- a/src/common/vector_math.h
+++ b/src/common/vector_math.h
@@ -32,6 +32,7 @@
 
 #include <cmath>
 #include <type_traits>
+#include <boost/serialization/access.hpp>
 
 namespace Common {
 
@@ -44,6 +45,14 @@ class Vec4;
 
 template <typename T>
 class Vec2 {
+    friend class boost::serialization::access;
+    template<class Archive>
+    void serialize(Archive & ar, const unsigned int file_version)
+    {
+        ar & x;
+        ar & y;
+    }
+
 public:
     T x;
     T y;
@@ -191,6 +200,15 @@ inline float Vec2<float>::Normalize() {
 
 template <typename T>
 class Vec3 {
+    friend class boost::serialization::access;
+    template<class Archive>
+    void serialize(Archive & ar, const unsigned int file_version)
+    {
+        ar & x;
+        ar & y;
+        ar & z;
+    }
+
 public:
     T x;
     T y;
@@ -399,6 +417,16 @@ using Vec3f = Vec3<float>;
 
 template <typename T>
 class Vec4 {
+    friend class boost::serialization::access;
+    template<class Archive>
+    void serialize(Archive & ar, const unsigned int file_version)
+    {
+        ar & x;
+        ar & y;
+        ar & z;
+        ar & w;
+    }
+
 public:
     T x;
     T y;
diff --git a/src/video_core/pica_state.h b/src/video_core/pica_state.h
index 1e5b1ecd2..10d1e637b 100644
--- a/src/video_core/pica_state.h
+++ b/src/video_core/pica_state.h
@@ -14,11 +14,15 @@
 #include "video_core/regs.h"
 #include "video_core/shader/shader.h"
 
-// NB, by defining this we can't use the built-in std::array serializer in this file
+// 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, std::array<Value, Size> &array, const unsigned int version)
+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()));
@@ -87,11 +91,11 @@ struct State {
             }
         };
 
-        std::array<ValueEntry, 128> noise_table;
-        std::array<ValueEntry, 128> color_map_table;
-        std::array<ValueEntry, 128> alpha_map_table;
-        std::array<ColorEntry, 256> color_table;
-        std::array<ColorDifferenceEntry, 256> color_diff_table;
+        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;
@@ -134,7 +138,7 @@ struct State {
             }
         };
 
-        std::array<std::array<LutEntry, 256>, 24> luts;
+        std::array<UnionArray<LutEntry, 256>, 24> luts;
     } lighting;
 
     struct {
@@ -154,7 +158,7 @@ struct State {
             }
         };
 
-        std::array<LutEntry, 128> lut;
+        UnionArray<LutEntry, 128> lut;
     } fog;
 
 #undef SERIALIZE_RAW
@@ -214,13 +218,11 @@ private:
     void serialize(Archive & ar, const unsigned int file_version)
     {
         ar & regs.reg_array;
-        // ar & vs;
-        // ar & gs;
+        ar & vs;
+        ar & gs;
         // ar & input_default_attributes;
         ar & proctex;
-        for (auto i = 0; i < lighting.luts.size(); i++) {
-            ar & lighting.luts[i];
-        }
+        ar & lighting.luts;
         ar & fog.lut;
         ar & cmd_list.addr;
         ar & cmd_list.length;
diff --git a/src/video_core/pica_types.h b/src/video_core/pica_types.h
index 5aca37b69..bef256e13 100644
--- a/src/video_core/pica_types.h
+++ b/src/video_core/pica_types.h
@@ -6,6 +6,7 @@
 
 #include <cmath>
 #include <cstring>
+#include <boost/serialization/access.hpp>
 #include "common/common_types.h"
 
 namespace Pica {
@@ -140,6 +141,13 @@ private:
     // Stored as a regular float, merely for convenience
     // TODO: Perform proper arithmetic on this!
     float value;
+
+    friend class boost::serialization::access;
+    template<class Archive>
+    void serialize(Archive & ar, const unsigned int file_version)
+    {
+        ar & value;
+    }
 };
 
 using float24 = Float<16, 7>;
diff --git a/src/video_core/shader/shader.h b/src/video_core/shader/shader.h
index bb6a5fae7..3f55d3064 100644
--- a/src/video_core/shader/shader.h
+++ b/src/video_core/shader/shader.h
@@ -9,6 +9,7 @@
 #include <functional>
 #include <type_traits>
 #include <nihstro/shader_bytecode.h>
+#include <boost/serialization/array.hpp>
 #include "common/assert.h"
 #include "common/common_funcs.h"
 #include "common/common_types.h"
@@ -193,6 +194,16 @@ struct Uniforms {
     static std::size_t GetIntUniformOffset(unsigned index) {
         return offsetof(Uniforms, i) + index * sizeof(Common::Vec4<u8>);
     }
+
+private:
+    friend class boost::serialization::access;
+    template<class Archive>
+    void serialize(Archive & ar, const unsigned int file_version)
+    {
+        ar & f;
+        ar & b;
+        ar & i;
+    }
 };
 
 struct ShaderSetup {
@@ -237,6 +248,19 @@ private:
     bool swizzle_data_hash_dirty = true;
     u64 program_code_hash = 0xDEADC0DE;
     u64 swizzle_data_hash = 0xDEADC0DE;
+
+    friend class boost::serialization::access;
+    template<class Archive>
+    void serialize(Archive & ar, const unsigned int file_version)
+    {
+        ar & uniforms;
+        ar & program_code;
+        ar & swizzle_data;
+        ar & program_code_hash_dirty;
+        ar & swizzle_data_hash_dirty;
+        ar & program_code_hash;
+        ar & swizzle_data_hash;
+    }
 };
 
 class ShaderEngine {