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/* 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 "DrawAttribsParser.h"
#include "BufferParser.h"
namespace Diligent
{
const Char* DrawAttribsParser::DrawAttribsLibName = "DrawAttribs";
DrawAttribsParser::DrawAttribsParser( BufferParser *pBuffParser, IRenderDevice *pRenderDevice, lua_State *L ) :
EngineObjectParserBase( pRenderDevice, L, DrawAttribsLibName ),
m_DrawBinding( this, L, "Context", "Draw", &DrawAttribsParser::Draw ),
m_DispatchComputeBinding( this, L, "Context", "DispatchCompute", &DrawAttribsParser::DispatchCompute ),
m_BufferMetatableName(pBuffParser->GetMetatableName())
{
DEFINE_ENUM_ELEMENT_MAPPING( m_PrimTopologyEnumMapping, PRIMITIVE_TOPOLOGY_TRIANGLE_LIST );
DEFINE_ENUM_ELEMENT_MAPPING( m_PrimTopologyEnumMapping, PRIMITIVE_TOPOLOGY_TRIANGLE_STRIP );
DEFINE_ENUM_ELEMENT_MAPPING( m_PrimTopologyEnumMapping, PRIMITIVE_TOPOLOGY_POINT_LIST );
DEFINE_ENUM_ELEMENT_MAPPING( m_PrimTopologyEnumMapping, PRIMITIVE_TOPOLOGY_LINE_LIST );
VERIFY( m_PrimTopologyEnumMapping.m_Str2ValMap.size() == PRIMITIVE_TOPOLOGY_NUM_TOPOLOGIES - 1,
"Unexpected map size. Did you update PRIMITIVE_TOPOLOGY enum?" );
VERIFY( m_PrimTopologyEnumMapping.m_Val2StrMap.size() == PRIMITIVE_TOPOLOGY_NUM_TOPOLOGIES - 1,
"Unexpected map size. Did you update PRIMITIVE_TOPOLOGY enum?" );
DEFINE_ENUM_BINDER( m_Bindings, DrawAttribs, Topology, PRIMITIVE_TOPOLOGY, m_PrimTopologyEnumMapping );
// NumVertices and NumIndices are in Union
DEFINE_BINDER( m_Bindings, DrawAttribs, NumVertices, Uint32, Validator<Uint32>() );
DEFINE_BINDER( m_Bindings, DrawAttribs, NumIndices, Uint32, Validator<Uint32>() );
DEFINE_ENUM_ELEMENT_MAPPING( m_ValueTypeEnumMapping, VT_UINT16 );
DEFINE_ENUM_ELEMENT_MAPPING( m_ValueTypeEnumMapping, VT_UINT32 );
DEFINE_ENUM_BINDER( m_Bindings, DrawAttribs, IndexType, VALUE_TYPE, m_ValueTypeEnumMapping );
DEFINE_BINDER( m_Bindings, DrawAttribs, IsIndexed, Bool, Validator<Bool>() );
DEFINE_BINDER( m_Bindings, DrawAttribs, NumInstances, Uint32, Validator<Uint32>() );
DEFINE_BINDER( m_Bindings, DrawAttribs, IsIndirect, Bool, Validator<Bool>() );
DEFINE_BINDER( m_Bindings, DrawAttribs, BaseVertex, Uint32, Validator<Uint32>() );
DEFINE_BINDER( m_Bindings, DrawAttribs, IndirectDrawArgsOffset, Uint32, Validator<Uint32>() );
// StartVertexLocation and FirstIndexLocation are in union
DEFINE_BINDER( m_Bindings, DrawAttribs, StartVertexLocation, Uint32, Validator<Uint32>() );
DEFINE_BINDER( m_Bindings, DrawAttribs, FirstIndexLocation, Uint32, Validator<Uint32>() );
DEFINE_BINDER( m_Bindings, DrawAttribs, FirstInstanceLocation, Uint32, Validator<Uint32>() );
std::vector<String> AllowedMetatable = { "Metatables.Buffer" };
DEFINE_BINDER( m_Bindings, DrawAttribs, pIndirectDrawAttribs, EngineObjectPtrLoader<IBuffer>, AllowedMetatable );
};
void DrawAttribsParser::CreateObj( lua_State *L )
{
INIT_LUA_STACK_TRACKING(L);
DrawAttribs DrawAttrs;
ParseLuaTable( L, 1, &DrawAttrs, m_Bindings );
CHECK_LUA_STACK_HEIGHT();
auto pDrawAttribs = reinterpret_cast<DrawAttribs*>(lua_newuserdata( L, sizeof( DrawAttribs ) ));
memcpy(pDrawAttribs, &DrawAttrs, sizeof(DrawAttribs));
CHECK_LUA_STACK_HEIGHT( +1 );
}
void DrawAttribsParser::DestroyObj( void *pData )
{
// We do not need to do anything, because the whole object is
// created as full user data and thus managed by Lua
}
void DrawAttribsParser::ReadField( lua_State *L, void *pData, const Char *Field )
{
auto pDrawAttribs = reinterpret_cast<DrawAttribs*>(pData);
PushField( L, pDrawAttribs, Field, m_Bindings );
}
void DrawAttribsParser::UpdateField( lua_State *L, void *pData, const Char *Field )
{
auto pDrawAttribs = reinterpret_cast<DrawAttribs*>(pData);
Diligent::UpdateField( L, -1, pDrawAttribs, Field, m_Bindings );
}
void DrawAttribsParser::PushExistingObject( lua_State *L, const void *pObject )
{
auto pDrawAttribs = reinterpret_cast<DrawAttribs*>(lua_newuserdata( L, sizeof( DrawAttribs ) ));
memcpy( pDrawAttribs, pObject, sizeof( DrawAttribs ) );
}
int DrawAttribsParser::Draw( lua_State *L )
{
auto pDrawAttribs = GetUserData<DrawAttribs*>( L, 1, m_MetatableRegistryName.c_str() );
auto *pContext = LoadDeviceContextFromRegistry( L );
pContext->Draw( *pDrawAttribs );
return 0;
}
int DrawAttribsParser::DispatchCompute( lua_State *L )
{
DispatchComputeAttribs DispatchAttrs;
if( lua_type( L, 1 ) == LUA_TUSERDATA )
{
DispatchAttrs.pIndirectDispatchAttribs = *GetUserData<IBuffer**>( L, 1, m_BufferMetatableName.c_str() );
if( lua_gettop( L ) > 1 )
{
DispatchAttrs.DispatchArgsByteOffset = ReadValueFromLua<Uint32>( L, 2 );
}
}
else
{
if( lua_gettop( L ) >= 1 )
DispatchAttrs.ThreadGroupCountX = ReadValueFromLua<Uint32>( L, 1 );
if( lua_gettop( L ) >= 2 )
DispatchAttrs.ThreadGroupCountY = ReadValueFromLua<Uint32>( L, 2 );
if( lua_gettop( L ) >= 3 )
DispatchAttrs.ThreadGroupCountY = ReadValueFromLua<Uint32>( L, 3 );
}
auto *pContext = LoadDeviceContextFromRegistry( L );
pContext->DispatchCompute( DispatchAttrs );
return 0;
}
}
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