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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 "BufferParser.h"
namespace Diligent
{
const Char* BufferParser::BufferLibName = "Buffer";
BufferParser::BufferParser( IRenderDevice *pRenderDevice, lua_State *L ) :
EngineObjectParserCommon<IBuffer>( pRenderDevice, L, BufferLibName ),
m_SetVertexBuffersBinding(this, L, "Context", "SetVertexBuffers", &BufferParser::SetVertexBuffers),
m_SetIndexBufferBinding( this, L, "Context", "SetIndexBuffer", &BufferParser::SetIndexBuffer )
{
DEFINE_BUFFERED_STRING_BINDER( m_Bindings, SBuffDescWrapper, Name, NameBuffer );
DEFINE_BINDER( m_Bindings, SBuffDescWrapper, uiSizeInBytes );
DEFINE_ENUM_ELEMENT_MAPPING( m_BindFlagEnumMapping, BIND_VERTEX_BUFFER );
DEFINE_ENUM_ELEMENT_MAPPING( m_BindFlagEnumMapping, BIND_INDEX_BUFFER );
DEFINE_ENUM_ELEMENT_MAPPING( m_BindFlagEnumMapping, BIND_UNIFORM_BUFFER );
DEFINE_ENUM_ELEMENT_MAPPING( m_BindFlagEnumMapping, BIND_SHADER_RESOURCE );
DEFINE_ENUM_ELEMENT_MAPPING( m_BindFlagEnumMapping, BIND_STREAM_OUTPUT );
//DEFINE_ENUM_ELEMENT_MAPPING( m_BindFlagEnumMapping, BIND_RENDER_TARGET );
//DEFINE_ENUM_ELEMENT_MAPPING( m_BindFlagEnumMapping, BIND_DEPTH_STENCIL );
DEFINE_ENUM_ELEMENT_MAPPING( m_BindFlagEnumMapping, BIND_UNORDERED_ACCESS );
DEFINE_ENUM_ELEMENT_MAPPING( m_BindFlagEnumMapping, BIND_INDIRECT_DRAW_ARGS );
// Explicit namespace declaraion is necesseary to avoid
// name conflicts when building for windows store
DEFINE_FLAGS_BINDER( m_Bindings, SBuffDescWrapper, BindFlags, Diligent::BIND_FLAGS, m_BindFlagEnumMapping );
DEFINE_ENUM_BINDER( m_Bindings, SBuffDescWrapper, Usage, m_UsageEnumMapping );
DEFINE_FLAGS_BINDER( m_Bindings, SBuffDescWrapper, CPUAccessFlags, CPU_ACCESS_FLAGS, m_CpuAccessFlagEnumMapping );
DEFINE_ENUM_ELEMENT_MAPPING( m_BuffModeEnumMapping, BUFFER_MODE_UNDEFINED );
DEFINE_ENUM_ELEMENT_MAPPING( m_BuffModeEnumMapping, BUFFER_MODE_FORMATTED );
DEFINE_ENUM_ELEMENT_MAPPING( m_BuffModeEnumMapping, BUFFER_MODE_STRUCTURED );
DEFINE_ENUM_ELEMENT_MAPPING( m_BuffModeEnumMapping, BUFFER_MODE_RAW );
static_assert(BUFFER_MODE_NUM_MODES == BUFFER_MODE_RAW + 1, "Not all buffer modes initialized.");
VERIFY( m_BuffModeEnumMapping.m_Str2ValMap.size() == BUFFER_MODE_NUM_MODES,
"Unexpected map size. Did you update BUFFER_MODE enum?" );
VERIFY( m_BuffModeEnumMapping.m_Val2StrMap.size() == BUFFER_MODE_NUM_MODES,
"Unexpected map size. Did you update BUFFER_MODE enum?" );
DEFINE_ENUM_BINDER( m_Bindings, SBuffDescWrapper, Mode, m_BuffModeEnumMapping );
DEFINE_BINDER( m_Bindings, SBuffDescWrapper, ElementByteStride );
DEFINE_ENUM_ELEMENT_MAPPING( m_SetVBFlagEnumMapping, SET_VERTEX_BUFFERS_FLAG_NONE );
DEFINE_ENUM_ELEMENT_MAPPING( m_SetVBFlagEnumMapping, SET_VERTEX_BUFFERS_FLAG_RESET );
};
void BufferParser::CreateObj( lua_State *L )
{
auto NumArgs = lua_gettop( L );
INIT_LUA_STACK_TRACKING(L);
SBuffDescWrapper BufferDesc;
ParseLuaTable( L, 1, &BufferDesc, m_Bindings );
CHECK_LUA_STACK_HEIGHT();
if( (BufferDesc.Mode == BUFFER_MODE_STRUCTURED || BufferDesc.Mode == BUFFER_MODE_FORMATTED) && BufferDesc.ElementByteStride == 0 )
SCRIPT_PARSING_ERROR( L, "Element byte stride of a structured or formatted buffer cannot be zero" );
if( (BufferDesc.Mode == BUFFER_MODE_FORMATTED || BufferDesc.Mode == BUFFER_MODE_STRUCTURED) &&
(BufferDesc.uiSizeInBytes % BufferDesc.ElementByteStride) != 0 )
SCRIPT_PARSING_ERROR( L, "Buffer size (", BufferDesc.uiSizeInBytes, ") is not multiple of element byte stride (", BufferDesc.ElementByteStride, ")." );
std::vector<Uint8> RawData;
if( NumArgs > 1 )
{
if( NumArgs != 3 )
{
SCRIPT_PARSING_ERROR( L, "To initialize buffer with initial data, provide value type and array of values as the 2nd and 3rd parameters. ", NumArgs, " arguments is provided." );
}
m_ArrayLoader.LoadArray( L, 3, RawData );
}
BufferData BuffData;
auto DataSize = static_cast<Uint32>(RawData.size());
if( DataSize )
{
if( BufferDesc.uiSizeInBytes == 0 )
BufferDesc.uiSizeInBytes = DataSize;
if( DataSize != BufferDesc.uiSizeInBytes )
{
SCRIPT_PARSING_ERROR( L, "Initial buffer data size (", DataSize, ") does not match the requested buffer size (", BufferDesc.uiSizeInBytes, "). "
"Do not specify uiSizeInBytes to have the buffer size calculated automatically." );
}
BuffData.pData = RawData.data();
BuffData.DataSize = DataSize;
}
if( (BufferDesc.BindFlags & BIND_UNIFORM_BUFFER) && (BufferDesc.uiSizeInBytes % 16) )
{
SCRIPT_PARSING_ERROR( L, "Uniform buffer size (", DataSize, ") is not multiple of 16." );
}
auto ppBuffer = reinterpret_cast<IBuffer**>(lua_newuserdata( L, sizeof( IBuffer* ) ));
*ppBuffer = nullptr;
m_pRenderDevice->CreateBuffer( BufferDesc, BuffData, ppBuffer );
if( *ppBuffer == nullptr )
SCRIPT_PARSING_ERROR( L, "Failed to create buffer" )
CHECK_LUA_STACK_HEIGHT( +1 );
}
int BufferParser::SetVertexBuffers( lua_State *L )
{
auto NumArgs = lua_gettop( L );
int CurrArgInd = 1;
Int32 StartSlot = 0;
if( lua_type( L, CurrArgInd ) == LUA_TNUMBER )
{
StartSlot = ReadValueFromLua<Int32>( L, CurrArgInd++ );
if( StartSlot < 0 )
{
SCRIPT_PARSING_ERROR( L, "Start slot (", StartSlot, " provided) must be in range 0..", MaxBufferSlots - 1 );
}
}
SET_VERTEX_BUFFERS_FLAGS Flags = SET_VERTEX_BUFFERS_FLAG_NONE;
Uint32 NumBuffers = 0;
IBuffer *pBuffs[MaxBufferSlots] = {};
Uint32 Offsets[MaxBufferSlots] = {};
while( CurrArgInd <= NumArgs )
{
if( StartSlot + (NumBuffers + 1) > MaxBufferSlots )
{
SCRIPT_PARSING_ERROR( L, "Too many buffer slots (", StartSlot, "..", StartSlot + NumBuffers - 1, ") are being set. Allowed slots are 0..", MaxBufferSlots - 1 );
break;
}
if( lua_type( L, CurrArgInd ) != LUA_TNIL )
pBuffs[NumBuffers] = *GetUserData<IBuffer**>( L, CurrArgInd++, m_MetatableRegistryName.c_str() );
else
{
++CurrArgInd;
pBuffs[NumBuffers] = nullptr;
}
if( lua_type( L, CurrArgInd ) == LUA_TNUMBER )
Offsets[NumBuffers] = ReadValueFromLua<Uint32>( L, CurrArgInd++ );
else
Offsets[NumBuffers] = 0;
// The last argument may be flags
if( CurrArgInd == NumArgs &&
(lua_type( L, CurrArgInd ) == LUA_TSTRING ||
lua_type( L, CurrArgInd ) == LUA_TTABLE ) )
{
VERIFY( Flags == 0, "Flags have already been set!" );
FlagsLoader<SET_VERTEX_BUFFERS_FLAGS> SetVBFlagsLoader(0, "SetVBFlags", m_SetVBFlagEnumMapping);
SetVBFlagsLoader.SetValue( L, CurrArgInd, &Flags );
++CurrArgInd;
}
++NumBuffers;
}
auto *pContext = LoadDeviceContextFromRegistry( L );
pContext->SetVertexBuffers( StartSlot, NumBuffers, pBuffs, Offsets, Flags );
// Return no values to Lua
return 0;
}
int BufferParser::SetIndexBuffer( lua_State *L )
{
auto *pIndexBuff = *GetUserData<IBuffer**>( L, 1, m_MetatableRegistryName.c_str() );
Uint32 Offset = 0;
auto NumArgs = lua_gettop( L );
if( NumArgs > 2 )
{
SCRIPT_PARSING_ERROR( L, "SetIndexBuffer() expects offset as optional 2nd parameter. ", NumArgs, " arguments are provided." );
}
if( lua_isnumber( L, 2 ) )
Offset = ReadValueFromLua<Uint32>( L, 2 );
auto *pContext = LoadDeviceContextFromRegistry( L );
pContext->SetIndexBuffer( pIndexBuff, Offset );
// Return no values to Lua
return 0;
}
}
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