1 files changed, 146 insertions, 0 deletions
diff --git a/RenderScript/src/DrawAttribsParser.cpp b/RenderScript/src/DrawAttribsParser.cpp
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+++ b/RenderScript/src/DrawAttribsParser.cpp
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+/*     Copyright 2015 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;
+    }
+}