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/* Copyright 2015-2018 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 "ResourceMappingParser.h"
#include "TextureViewParser.h"
#include "BufferParser.h"
#include "BufferViewParser.h"
namespace Diligent
{
const Char* ResourceMappingParser::ResourceMappingLibName = "ResourceMapping";
ResourceMappingParser::ResourceMappingParser( IRenderDevice *pRenderDevice, lua_State *L,
TextureViewParser *pTexViewParser,
BufferParser *pBuffParser,
BufferViewParser *pBuffViewParser ) :
EngineObjectParserBase( pRenderDevice, L, ResourceMappingLibName),
m_pTexViewParser( pTexViewParser ),
m_pBuffParser( pBuffParser ),
m_pBuffViewParser( pBuffViewParser ),
m_MappedResourceMetatables( { pTexViewParser->GetMetatableName(), pBuffParser->GetMetatableName(), pBuffViewParser->GetMetatableName() } )
{
DEFINE_BINDER( m_Bindings, ResourceMappingEntry, Name, const Char*, SkipValidationFunc<const Char*> )
DEFINE_BINDER( m_Bindings, ResourceMappingEntry, pObject, EngineObjectPtrLoader<IDeviceObject>, m_MappedResourceMetatables );
};
void ResourceMappingParser::CreateObj( lua_State *L )
{
std::vector<ResourceMappingEntry> Entries;
ParseLuaArray( L, 1, &Entries, [ &]( void* pBasePointer, int StackIndex, int NewArrayIndex )
{
VERIFY( pBasePointer == &Entries, "Sanity check failed" );
auto CurrIndex = Entries.size();
if( static_cast<int>(CurrIndex) != NewArrayIndex - 1 )
SCRIPT_PARSING_ERROR( L, "Explicit array indices are not allowed in resource mapping description. Provided index ", NewArrayIndex - 1, " conflicts with actual index ", CurrIndex, "." );
Entries.resize( CurrIndex + 1 );
ParseLuaTable( L, StackIndex, &(Entries)[CurrIndex], m_Bindings );
}
);
Entries.push_back( ResourceMappingEntry() );
// Note that ResourceMappingEntry.Name is declared as const Char*, not as String.
// This is not a problem as Lua guarantees that all pointers to string values
// remain valid as long as these strings are not popped from the stack
ResourceMappingDesc ResourceMappingDesc;
ResourceMappingDesc.pEntries = Entries.data();
IResourceMapping **ppResourceMapping = reinterpret_cast<IResourceMapping**>( lua_newuserdata( L, sizeof( IResourceMapping* ) ) );
*ppResourceMapping = nullptr;
m_pRenderDevice->CreateResourceMapping( ResourceMappingDesc, ppResourceMapping );
if( *ppResourceMapping == nullptr )
SCRIPT_PARSING_ERROR(L, "Failed to create resource mapping")
}
void ResourceMappingParser::DestroyObj( void *pData )
{
if( pData != nullptr )
{
auto ppObject = reinterpret_cast<IResourceMapping**>(pData);
if( *ppObject != nullptr )
(*ppObject)->Release();
}
}
void ResourceMappingParser::ReadField( lua_State *L, void *pData, const Char *Field )
{
auto *pResourceMapping = *reinterpret_cast<IResourceMapping**>(pData);
Diligent::RefCntAutoPtr<IDeviceObject> pResource;
pResourceMapping->GetResource( Field, &pResource );
Diligent::RefCntAutoPtr<IObject> pTextureView;
Diligent::RefCntAutoPtr<IObject> pBuffer;
if( pResource )
{
pResource->QueryInterface( IID_TextureView, &pTextureView );
if( pTextureView )
{
m_pTexViewParser->PushObject(L, pTextureView);
}
if( !pTextureView )
{
pResource->QueryInterface( IID_Buffer, &pBuffer );
if( pBuffer )
{
m_pBuffParser->PushObject( L, pBuffer );
}
}
}
if( !(pTextureView || pBuffer) )
{
lua_pushnil( L ); // -0 | +1 -> +1
}
}
void ResourceMappingParser::UpdateField( lua_State *L, void *pData, const Char *Field )
{
auto *pResourceMapping = *reinterpret_cast<IResourceMapping**>(pData);
if( lua_type( L, 3 ) == LUA_TNIL )
{
pResourceMapping->RemoveResourceByName( Field );
}
else
{
auto pResource = *GetUserData<IDeviceObject**>( L, 3, m_MappedResourceMetatables );
pResourceMapping->AddResource( Field, pResource, false );
}
}
void ResourceMappingParser::GetObjectByName( lua_State *L, const Char *ShaderName, IResourceMapping** ppObject )
{
auto pObject = *GetGlobalObject<IResourceMapping**>( L, ShaderName, m_MetatableRegistryName.c_str() );
*ppObject = pObject;
pObject->AddRef();
}
void ResourceMappingParser::PushExistingObject( lua_State *L, const void *pObject )
{
auto ppObject = reinterpret_cast<IResourceMapping**>(lua_newuserdata( L, sizeof( IResourceMapping* ) ));
*ppObject = reinterpret_cast<IResourceMapping*>(const_cast<void*>(pObject));
(*ppObject)->AddRef();
}
}
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