Updated to Diligent Engine 2.0

1 files changed, 192 insertions, 0 deletions

diff --git a/RenderScript/src/ShaderResourceBindingParser.cpp b/RenderScript/src/ShaderResourceBindingParser.cpp
new file mode 100644
index 0000000..4daf2aa
--- /dev/null
+++ b/RenderScript/src/ShaderResourceBindingParser.cpp
@@ -0,0 +1,192 @@
+/*     Copyright 2015-2016 Egor Yusov
+ *  
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF ANY PROPRIETARY RIGHTS.
+ *
+ *  In no event and under no legal theory, whether in tort (including negligence), 
+ *  contract, or otherwise, unless required by applicable law (such as deliberate 
+ *  and grossly negligent acts) or agreed to in writing, shall any Contributor be
+ *  liable for any damages, including any direct, indirect, special, incidental, 
+ *  or consequential damages of any character arising as a result of this License or 
+ *  out of the use or inability to use the software (including but not limited to damages 
+ *  for loss of goodwill, work stoppage, computer failure or malfunction, or any and 
+ *  all other commercial damages or losses), even if such Contributor has been advised 
+ *  of the possibility of such damages.
+ */
+
+#include "pch.h"
+#include "ShaderResourceBindingParser.h"
+
+namespace Diligent
+{
+    const Char* ShaderResourceBindingParser::ShaderResourceBindingLibName = "ShaderResourceBinding";
+
+    ShaderResourceBindingParser::ShaderResourceBindingParser( IRenderDevice *pRenderDevice, lua_State *L,
+                                                              const String &PSOLibMetatableName,
+                                                              const String &ResMappingMetatableName,
+                                                              const String &ShaderVarMetatableRegistryName ) :
+        m_PSOLibMetatableName(PSOLibMetatableName),
+        m_ResMappingMetatableName(ResMappingMetatableName),
+        m_ShaderVarMetatableRegistryName(ShaderVarMetatableRegistryName),
+        EngineObjectParserBase( pRenderDevice, L, ShaderResourceBindingLibName ),
+        m_BindResourcesBinding( this, L, m_MetatableRegistryName.c_str(), "BindResources", &ShaderResourceBindingParser::BindResources ),
+        m_GetVariableBinding( this, L, m_MetatableRegistryName.c_str(), "GetVariable", &ShaderResourceBindingParser::GetVariable ),
+        m_CreateShaderResourceBinding( this, L, PSOLibMetatableName.c_str(), "CreateShaderResourceBinding", &ShaderResourceBindingParser::CreateShaderResourceBinding )
+    {
+
+    }
+
+
+    void ShaderResourceBindingParser::CreateObj( lua_State *L )
+    {
+        INIT_LUA_STACK_TRACKING(L);
+
+        // Shader should be the first argument
+        auto *pPSO = *GetUserData<IPipelineState**>( L, 1, m_PSOLibMetatableName.c_str() );
+        
+        auto pNewShaderResBndngLuaObj = reinterpret_cast<IShaderResourceBinding**>(lua_newuserdata( L, sizeof( IShaderResourceBinding* ) ));
+        pPSO->CreateShaderResourceBinding(pNewShaderResBndngLuaObj);
+
+        CHECK_LUA_STACK_HEIGHT( +1 );
+    }
+
+    void ShaderResourceBindingParser::DestroyObj( void *pData )
+    {
+        if( pData != nullptr )
+        {
+            auto ppShaderResBinding = reinterpret_cast<IShaderResourceBinding**>(pData);
+            if( *ppShaderResBinding != nullptr )
+                (*ppShaderResBinding)->Release();
+        }
+    }
+
+    void ShaderResourceBindingParser::ReadField( lua_State *L, void *pData, const Char *Field )
+    {
+        SCRIPT_PARSING_ERROR(L, "Shader resource binding have no fields that can be read")
+    }
+
+    void ShaderResourceBindingParser::UpdateField( lua_State *L, void *pData, const Char *Field )
+    {
+        SCRIPT_PARSING_ERROR(L, "Shader resource binding have no fields that can be updated")
+    }
+
+
+    void ShaderResourceBindingParser::PushExistingObject( lua_State *L, const void *pObject )
+    {
+        auto pShaderResourceBinding = reinterpret_cast<IShaderResourceBinding**>(lua_newuserdata( L, sizeof( IShaderResourceBinding* ) ));
+        *pShaderResourceBinding = reinterpret_cast<IShaderResourceBinding*>( const_cast<void*>(pObject) );
+        (*pShaderResourceBinding)->AddRef();
+    }
+
+
+    int ShaderResourceBindingParser::CreateShaderResourceBinding( lua_State *L )
+    {
+        return LuaCreate(L);
+    }
+
+    int ShaderResourceBindingParser::BindResources( lua_State *L )
+    {
+        try
+        {
+            auto NumArgs = lua_gettop( L );
+            if( NumArgs < 3 )
+            {
+                SCRIPT_PARSING_ERROR( L, "At least 2 arguments (shader flags and resource mapping) are expected" );
+            }
+            
+            
+            int ArgStackInd = 1;
+
+            auto *pResBinding = *GetUserData<IShaderResourceBinding**>( L, ArgStackInd, m_MetatableRegistryName.c_str() );
+            VERIFY( pResBinding, "Resource mapping pointer is null" );
+            if( !pResBinding )return 0;
+
+            ++ArgStackInd;
+            Uint32 ShaderFlags = 0;
+            {
+                FlagsLoader<SHADER_TYPE> FlagsLoader(0, "BindShaderResourceFlags", m_ShaderTypeEnumMapping);
+                FlagsLoader.SetValue( L, ArgStackInd, &ShaderFlags );
+            }
+
+            ++ArgStackInd;
+            auto *pResourceMapping = *GetUserData<IResourceMapping**>( L, ArgStackInd, m_ResMappingMetatableName.c_str() );
+            if( !pResourceMapping )
+            {
+                SCRIPT_PARSING_ERROR( L, "Incorrect 2nd argument type: resource mapping is expected" );
+            }
+
+            ++ArgStackInd;
+            Uint32 Flags = 0;
+            // The last argument may be flags
+            if( NumArgs >= ArgStackInd &&
+                (lua_type( L, ArgStackInd ) == LUA_TSTRING || lua_type( L, ArgStackInd ) == LUA_TTABLE ) )
+            {
+                FlagsLoader<BIND_SHADER_RESOURCES_FLAGS> FlagsLoader(0, "BindShaderResourceFlags", m_BindShaderResFlagEnumMapping);
+                FlagsLoader.SetValue( L, ArgStackInd, &Flags );
+            }
+
+            pResBinding->BindResources( ShaderFlags, pResourceMapping, Flags );
+        }
+        catch( const std::runtime_error& )
+        {
+
+        }
+        return 0;
+    }
+
+    int ShaderResourceBindingParser::GetVariable( lua_State *L )
+    {
+        auto NumArgs = lua_gettop( L );
+        if( NumArgs < 3 )
+        {
+            SCRIPT_PARSING_ERROR( L, "2 arguments (shader type and variable name) are expected" );
+        }
+
+        INIT_LUA_STACK_TRACKING(L);
+
+        int ArgStackInd = 1;
+
+        // The object itself goes first
+        auto *pShaderResBinding = *GetUserData<IShaderResourceBinding**>( L, ArgStackInd, m_MetatableRegistryName.c_str() );
+        
+        // Shader type should be the first argument
+        ++ArgStackInd;
+        SHADER_TYPE ShaderType = SHADER_TYPE_UNKNOWN;
+        EnumMemberBinder<SHADER_TYPE> ShaderTypeParser(0, "ShaderType", m_ShaderTypeEnumMapping);
+        ShaderTypeParser.SetValue(L, ArgStackInd, &ShaderType);
+
+        ++ArgStackInd;
+        // Variable name should be the second argument
+        auto VarName = ReadValueFromLua<String>( L, ArgStackInd );
+
+        auto pVar = pShaderResBinding->GetVariable(ShaderType, VarName.c_str());
+
+        auto pNewShaderVarLuaObj = reinterpret_cast<IShaderVariable**>(lua_newuserdata( L, sizeof( IShaderVariable* ) ));
+        *pNewShaderVarLuaObj = pVar;
+        pVar->AddRef();
+
+        // Push onto the stack the metatable associated with name given in the registry
+        luaL_getmetatable( L, m_ShaderVarMetatableRegistryName.c_str() );   // -0 | +1 -> +1
+        // Pop a table from the top of the stack and set it as the new metatable 
+        // for the value at the given index (which is where the new user datum is)
+        lua_setmetatable( L, -2 );                                          // -1 | +0 -> -1
+
+        CHECK_LUA_STACK_HEIGHT( +1 );
+
+        return 1;
+    }
+
+    void ShaderResourceBindingParser::GetObjectByName( lua_State *L, const Char *ShaderName, IShaderResourceBinding** ppObject )
+    {
+        auto pObject = *GetGlobalObject<IShaderResourceBinding**>( L, ShaderName, m_MetatableRegistryName.c_str() );
+        *ppObject = pObject;
+        pObject->AddRef();
+    }
+}