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/* Copyright 2015-2017 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 "BufferViewParser.h"
#include "BufferParser.h"
#include "SamplerParser.h"
namespace Diligent
{
const Char* BufferViewParser::BufferViewLibName = "BufferView";
BufferViewParser::BufferViewParser( BufferParser *pBufParser,
IRenderDevice *pRenderDevice,
lua_State *L ) :
EngineObjectParserCommon<IBufferView>( pRenderDevice, L, BufferViewLibName ),
m_BufferLibMetatableName(pBufParser->GetMetatableName()),
m_CreateViewBinding( this, L, m_BufferLibMetatableName.c_str(), "CreateView", &BufferViewParser::CreateView ),
m_GetDefaultViewBinding( this, L, m_BufferLibMetatableName.c_str(), "GetDefaultView", &BufferViewParser::GetDefaultView ),
m_ViewTypeParser( 0, "ViewType", m_ViewTypeEnumMapping )
{
DEFINE_BUFFERED_STRING_BINDER( m_Bindings, SBuffViewDescWrapper, Name, NameBuffer );
DEFINE_ENUM_ELEMENT_MAPPING( m_ViewTypeEnumMapping, BUFFER_VIEW_SHADER_RESOURCE );
DEFINE_ENUM_ELEMENT_MAPPING( m_ViewTypeEnumMapping, BUFFER_VIEW_UNORDERED_ACCESS );
VERIFY( m_ViewTypeEnumMapping.m_Str2ValMap.size() == BUFFER_VIEW_NUM_VIEWS - 1,
"Unexpected map size. Did you update BUFFER_VIEW_TYPE enum?" );
VERIFY( m_ViewTypeEnumMapping.m_Val2StrMap.size() == BUFFER_VIEW_NUM_VIEWS - 1,
"Unexpected map size. Did you update BUFFER_VIEW_TYPE enum?" );
DEFINE_ENUM_BINDER( m_Bindings, SBuffViewDescWrapper, ViewType, BUFFER_VIEW_TYPE, m_ViewTypeEnumMapping );
DEFINE_BINDER( m_Bindings, SBuffViewDescWrapper, ByteOffset, Uint32, Validator<Uint32>() );
DEFINE_BINDER( m_Bindings, SBuffViewDescWrapper, ByteWidth, Uint32, Validator<Uint32>() );
};
void BufferViewParser::CreateObj( lua_State *L )
{
INIT_LUA_STACK_TRACKING(L);
auto *pBuffer = *GetUserData<IBuffer**>( L, 1, m_BufferLibMetatableName.c_str() );
SBuffViewDescWrapper BufferViewDesc;
ParseLuaTable( L, 2, &BufferViewDesc, m_Bindings );
CHECK_LUA_STACK_HEIGHT();
auto ppBufferView = reinterpret_cast<IBufferView**>(lua_newuserdata( L, sizeof( IBufferView* ) ));
*ppBufferView = nullptr;
pBuffer->CreateView( BufferViewDesc, ppBufferView );
if( *ppBufferView == nullptr )
SCRIPT_PARSING_ERROR(L, "Failed to create buffer view")
CHECK_LUA_STACK_HEIGHT( +1 );
}
int BufferViewParser::CreateView( lua_State *L )
{
// Note that LuaCreate is a static function.
// However, this pointer to the BufferViewParser object
// is stored in the upvalue. So LuaCreate will call
// BufferViewParser::CreateObj()
return LuaCreate(L);
}
int BufferViewParser::GetDefaultView( lua_State *L )
{
INIT_LUA_STACK_TRACKING( L );
// Buffer should be the first argument
auto *pBuffer = *GetUserData<IBuffer**>( L, 1, m_BufferLibMetatableName.c_str() );
// View type should be the second argument
BUFFER_VIEW_TYPE ViewType;
m_ViewTypeParser.SetValue( L, 2, &ViewType );
auto pView = pBuffer->GetDefaultView( ViewType );
// Push existing object
PushObject(L, pView);
CHECK_LUA_STACK_HEIGHT( +1 );
// Returning one value to Lua
return 1;
}
}
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