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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 "ScriptParser.h"
#include "LuaBindings.h"
#include "SamplerParser.h"
#include "ShaderParser.h"
#include "BufferParser.h"
#include "TextureParser.h"
#include "DrawAttribsParser.h"
#include "FileSystem.h"
#include "ResourceMappingParser.h"
#include "TextureViewParser.h"
#include "BufferViewParser.h"
#include "PSODescParser.h"
#include "DeviceContextFuncBindings.h"
#include "ViewportParser.h"
#include "ScissorRectParser.h"
#include "ShaderVariableParser.h"
#include "ShaderResourceBindingParser.h"
using namespace Diligent;
using namespace Diligent;
namespace Diligent
{
const Char* ScriptParser::DeviceContextRegistryKey = "DeviceContext";
#define IMPLEMENT_PUSH_FUNC_STUBS(ObjectType, ParserName) \
void ScriptParser::SpecialPushFuncs::PushFuncStub( lua_State *L, const ObjectType* pObject) \
{ \
m_pScriptParser->ParserName->PushObject( L, pObject ); \
} \
\
void ScriptParser::SpecialPushFuncs::PushFuncStub( lua_State *L, const RefCntAutoPtr<ObjectType> &pObject ) \
{ \
PushFuncStub( L, pObject.RawPtr() ); \
}
IMPLEMENT_PUSH_FUNC_STUBS( ISampler, m_pSamplerParser)
IMPLEMENT_PUSH_FUNC_STUBS( IShader, m_pShaderParser )
IMPLEMENT_PUSH_FUNC_STUBS( IBuffer, m_pBufferParser )
IMPLEMENT_PUSH_FUNC_STUBS( ITexture, m_pTextureParser )
IMPLEMENT_PUSH_FUNC_STUBS( IResourceMapping, m_pResourceMappingParser )
IMPLEMENT_PUSH_FUNC_STUBS( ITextureView, m_pTextureViewParser )
IMPLEMENT_PUSH_FUNC_STUBS( IBufferView, m_pBufferViewParser )
IMPLEMENT_PUSH_FUNC_STUBS( IPipelineState, m_pPSOParser )
IMPLEMENT_PUSH_FUNC_STUBS( IShaderVariable, m_pShaderVariableParser )
IMPLEMENT_PUSH_FUNC_STUBS( IShaderResourceBinding, m_pShaderResBindingParser )
void ScriptParser::SpecialPushFuncs::PushFuncStub( lua_State *L, const DrawAttribs &DrawAttribs )
{
m_pScriptParser->m_pDrawAttribsParser->PushObject( L, &DrawAttribs );
}
void ScriptParser::SpecialPushFuncs::PushFuncStub( lua_State *L, const Viewport &Viewport )
{
m_pScriptParser->m_pViewportParser->PushObject( L, &Viewport );
}
void ScriptParser::SpecialPushFuncs::PushFuncStub( lua_State *L, const Rect &Rect )
{
m_pScriptParser->m_pScissorRectParser->PushObject( L, &Rect );
}
ScriptParser::ScriptParser( IReferenceCounters *pRefCounters, IRenderDevice *pRenderDevice ) :
TBase(pRefCounters),
m_pRenderDevice( pRenderDevice ),
m_LuaState( LuaState::LUA_LIB_BASE | LuaState::LUA_LIB_COROUTINE | LuaState::LUA_LIB_TABLE |
LuaState::LUA_LIB_STRING | LuaState::LUA_LIB_BIT32 | LuaState::LUA_LIB_MATH )
{
// Run's ctor is called BEFORE the m_LuaState's ctor
// We need to explicitly init the object:
m_RunFunctionCaller.SetLuaState( m_LuaState );
m_RunFunctionCaller.SetScriptParser( this );
// We need to define global constants before initializing parsers
DefineGlobalConstants(m_LuaState);
m_pSamplerParser.reset( new SamplerParser( pRenderDevice, m_LuaState ) );
m_pBufferParser.reset( new BufferParser( pRenderDevice, m_LuaState ) );
m_pTextureParser.reset( new TextureParser( pRenderDevice, m_LuaState ) );
m_pDrawAttribsParser.reset( new DrawAttribsParser( m_pBufferParser.get(), pRenderDevice, m_LuaState ) );
// Texture view parser must be create AFTER texture parser, because it
// registers CreateView function in Metatables.Texture table
m_pTextureViewParser.reset( new TextureViewParser( m_pTextureParser.get(), m_pSamplerParser.get(), pRenderDevice, m_LuaState ) );
m_pBufferViewParser.reset( new BufferViewParser( m_pBufferParser.get(), pRenderDevice, m_LuaState ) );
m_pResourceMappingParser.reset( new ResourceMappingParser( pRenderDevice, m_LuaState, m_pTextureViewParser.get(), m_pBufferParser.get(), m_pBufferViewParser.get() ) );
m_pShaderParser.reset( new ShaderParser( pRenderDevice, m_LuaState, m_pResourceMappingParser->GetMetatableName() ) );
m_pPSOParser.reset( new PSODescParser( pRenderDevice, m_LuaState ) );
m_pViewportParser.reset( new ViewportParser( pRenderDevice, m_LuaState ) );
m_pScissorRectParser.reset( new ScissorRectParser( pRenderDevice, m_LuaState ) );
m_pShaderVariableParser.reset( new ShaderVariableParser( pRenderDevice, m_LuaState, m_pShaderParser->GetMetatableName(), m_pBufferParser->GetMetatableName(), m_pBufferViewParser->GetMetatableName(), m_pTextureViewParser->GetMetatableName() ) );
m_pShaderResBindingParser.reset( new ShaderResourceBindingParser( pRenderDevice, m_LuaState, m_pPSOParser->GetMetatableName(), m_pResourceMappingParser->GetMetatableName(), m_pShaderVariableParser->GetMetatableName() ) );
m_pDeviceCtxFuncBindings.reset( new DeviceContextFuncBindings( pRenderDevice, m_LuaState, m_pTextureViewParser.get(), m_pShaderResBindingParser.get(), m_pPSOParser.get() ) );
}
ScriptParser::~ScriptParser()
{
// It is essentially important to close Lua first, because we need to release
// all user data
m_LuaState.Close();
}
void ScriptParser::DefineGlobalConstants( lua_State *L )
{
INIT_LUA_STACK_TRACKING( L );
// Create a new empty table and push it onto the stack
lua_newtable( L ); // -0 | +1 -> +1
const auto &DeviceCaps = m_pRenderDevice->GetDeviceCaps();
const Char *pDeviceStr = nullptr;
switch(DeviceCaps.DevType)
{
case DeviceType::OpenGL:
pDeviceStr = "OpenGL";
break;
case DeviceType::OpenGLES:
pDeviceStr = "OpenGLES";
break;
case DeviceType::D3D11:
pDeviceStr = "D3D11";
break;
case DeviceType::D3D12:
pDeviceStr = "D3D12";
break;
default:
UNEXPECTED( "Unknown device type" );
}
SetTableField( L, "DeviceType", -1, pDeviceStr ); // -0 | +0 -> 0
// lua_setglobal() pops a value from the stack and sets it as the new value of global name.
lua_setglobal( L, "Constants" ); // -1 | +0 -> -1
CHECK_LUA_STACK_HEIGHT();
lua_newtable( L ); // -0 | +1 -> +1
lua_setglobal( L, "Context" ); // -1 | +0 -> -1
CHECK_LUA_STACK_HEIGHT();
}
// Every C-function called by Lua sees only its own private stack, with its first argument at index 1
// Return the number of results pushed onto the stack
void ScriptParser::Parse( const Char *pScript )
{
// Load the chunck and push it onto the top of the stack.
// In case of errors, the error message is pushed onto the top of the stack
if( luaL_loadstring( m_LuaState, pScript ) )
{
// Get the error message from the top of the stack
// NOTE: the lua_tostring function returns a pointer to an internal copy of the string.
// The string is always zero-terminated and Lua ensures that this pointer is valid as long
// as the corresponding value is in the stack.
auto ErrorMsg = lua_tostring( m_LuaState, -1 );
if( ErrorMsg )
{
LOG_ERROR_AND_THROW( "Failed to parse the script file:\n", ErrorMsg );
}
else
{
LOG_ERROR_AND_THROW( "Failed to parse the script file." );
}
lua_pop( m_LuaState, 1 ); // pop error message from the stack
}
}
void ScriptParser::GetSamplerByName( const Char *SamplerName, ISampler** ppSampler )
{
m_pSamplerParser->GetObjectByName( m_LuaState, SamplerName, ppSampler );
}
void ScriptParser::GetShaderByName( const Char *ShaderName, IShader** ppShader )
{
m_pShaderParser->GetObjectByName( m_LuaState, ShaderName, ppShader );
}
void ScriptParser::GetBufferByName( const Char *BufferName, IBuffer** ppBuffer )
{
m_pBufferParser->GetObjectByName( m_LuaState, BufferName, ppBuffer );
}
void ScriptParser::GetTextureByName( const Char *TextureName, ITexture** ppTexture )
{
m_pTextureParser->GetObjectByName( m_LuaState, TextureName, ppTexture );
}
void ScriptParser::GetResourceMappingByName( const Char *ResourceMappingName, IResourceMapping** ppResourceMapping )
{
m_pResourceMappingParser->GetObjectByName( m_LuaState, ResourceMappingName, ppResourceMapping );
}
void ScriptParser::GetTextureViewByName( const Char *TextureViewName, ITextureView** ppTextureView )
{
m_pTextureViewParser->GetObjectByName( m_LuaState, TextureViewName, ppTextureView );
}
void ScriptParser::GetBufferViewByName( const Char *BufferViewName, IBufferView** ppBufferView )
{
m_pBufferViewParser->GetObjectByName( m_LuaState, BufferViewName, ppBufferView );
}
void ScriptParser::GetPipelineStateByName( const Char *PSOName, IPipelineState** ppPSO )
{
m_pPSOParser->GetObjectByName( m_LuaState, PSOName, ppPSO );
}
void ScriptParser::GetShaderVariableByName( const Char *ShaderVarName, IShaderVariable** ppShaderVar )
{
m_pShaderVariableParser->GetObjectByName( m_LuaState, ShaderVarName, ppShaderVar );
}
void ScriptParser::QueryInterface( const Diligent::INTERFACE_ID &IID, IObject **ppInterface )
{
UNSUPPORTED( "Not implemented" );
}
}
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