Add analyser for directx9 shaders to extract information about constants and other stuff

src/ObjWriting/Shader/D3D9ShaderAnalyser.h

@@ -0,0 +1,100 @@
+#pragma once
+
+#include <memory>
+#include <string>
+#include <vector>
+
+namespace d3d9
+{
+    enum class ShaderType
+    {
+        UNKNOWN,
+        PIXEL_SHADER,
+        VERTEX_SHADER
+    };
+
+    // https://docs.microsoft.com/en-us/windows/win32/direct3d9/d3dxregister-set
+    enum class RegisterSet
+    {
+        BOOL,
+        INT_4,
+        FLOAT_4,
+        SAMPLER,
+
+        // This entry only exist to mark the size of the enum and is not an actual valid value
+        MAX
+    };
+
+    // https://docs.microsoft.com/en-us/windows/win32/direct3d9/d3dxparameter-class
+    enum class ParameterClass
+    {
+        SCALAR,
+        VECTOR,
+        MATRIX_ROWS,
+        MATRIX_COLUMNS,
+        OBJECT,
+        STRUCT,
+
+        // This entry only exist to mark the size of the enum and is not an actual valid value
+        MAX
+    };
+
+    // https://docs.microsoft.com/en-us/windows/win32/direct3d9/d3dxparameter-type
+    enum class ParameterType
+    {
+        VOID,
+        BOOL,
+        INT,
+        FLOAT,
+        STRING,
+        TEXTURE,
+        TEXTURE_1D,
+        TEXTURE_2D,
+        TEXTURE_3D,
+        TEXTURE_CUBE,
+        SAMPLER,
+        SAMPLER_1D,
+        SAMPLER_2D,
+        SAMPLER_3D,
+        SAMPLER_CUBE,
+        PIXEL_SHADER,
+        VERTEX_SHADER,
+        PIXEL_FRAGMENT,
+        VERTEX_FRAGMENT,
+        UNSUPPORTED,
+
+        // This entry only exist to mark the size of the enum and is not an actual valid value
+        MAX
+    };
+
+    class ShaderConstant
+    {
+    public:
+        std::string m_name;
+        RegisterSet m_register_set{};
+        unsigned m_register_index = 0;
+        unsigned m_register_count = 0;
+        ParameterClass m_class{};
+        ParameterType m_type{};
+        unsigned m_type_rows = 0;
+        unsigned m_type_columns = 0;
+        unsigned m_type_elements = 0;
+    };
+
+    class ShaderInfo
+    {
+    public:
+        ShaderType m_type = ShaderType::UNKNOWN;
+        unsigned m_version_major = 0;
+        unsigned m_version_minor = 0;
+        std::string m_creator;
+        std::string m_target;
+        std::vector<ShaderConstant> m_constants;
+    };
+
+    class ShaderAnalyser
+    {
+    public:
+        static std::unique_ptr<ShaderInfo> GetShaderInfo(const uint32_t* shaderByteCode, size_t shaderByteCodeSize);
+    };
+}