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Diffstat (limited to 'RenderScript/src/ScissorRectParser.cpp')
| -rw-r--r-- | RenderScript/src/ScissorRectParser.cpp | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/RenderScript/src/ScissorRectParser.cpp b/RenderScript/src/ScissorRectParser.cpp new file mode 100644 index 0000000..3f81087 --- /dev/null +++ b/RenderScript/src/ScissorRectParser.cpp @@ -0,0 +1,124 @@ +/* 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 "ScissorRectParser.h" + +namespace Diligent +{ + const Char* ScissorRectParser::ScissorRectLibName = "ScissorRect"; + + ScissorRectParser::ScissorRectParser( IRenderDevice *pRenderDevice, lua_State *L ) : + EngineObjectParserBase( pRenderDevice, L, ScissorRectLibName ), + m_SetScissorRectsBinding( this, L, "Context", "SetScissorRects", &ScissorRectParser::SetScissorRects ) + { + m_ScissorRects.reserve( 8 ); + + // NumVertices and NumIndices are in Union + DEFINE_BINDER( m_Bindings, Rect, left, Int32, Validator<Int32>() ) + DEFINE_BINDER( m_Bindings, Rect, top, Int32, Validator<Int32>() ) + DEFINE_BINDER( m_Bindings, Rect, right, Int32, Validator<Int32>() ) + DEFINE_BINDER( m_Bindings, Rect, bottom, Int32, Validator<Int32>() ) + }; + + void ScissorRectParser::CreateObj( lua_State *L ) + { + INIT_LUA_STACK_TRACKING(L); + + Rect ScissorRect; + ParseLuaTable( L, 1, &ScissorRect, m_Bindings ); + if( ScissorRect.left > ScissorRect.right ) + SCRIPT_PARSING_ERROR(L, "Scissor rect left and right boundaries (", ScissorRect.left, ", ", ScissorRect.right, ") are incorrect") + if( ScissorRect.top > ScissorRect.bottom ) + SCRIPT_PARSING_ERROR(L, "Scissor rect top and bottom boundaries (", ScissorRect.top, ", ", ScissorRect.bottom, ") are incorrect") + + CHECK_LUA_STACK_HEIGHT(); + + auto pScissorRect = reinterpret_cast<Rect*>(lua_newuserdata( L, sizeof( Rect ) )); + memcpy(pScissorRect, &ScissorRect, sizeof(ScissorRect)); + + CHECK_LUA_STACK_HEIGHT( +1 ); + } + + void ScissorRectParser::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 ScissorRectParser::ReadField( lua_State *L, void *pData, const Char *Field ) + { + auto pScissorRect = reinterpret_cast<Rect*>(pData); + PushField( L, pScissorRect, Field, m_Bindings ); + } + + void ScissorRectParser::UpdateField( lua_State *L, void *pData, const Char *Field ) + { + auto pScissorRect = reinterpret_cast<Rect*>(pData); + Diligent::UpdateField( L, -1, pScissorRect, Field, m_Bindings ); + } + + void ScissorRectParser::PushExistingObject( lua_State *L, const void *pObject ) + { + auto pScissorRect = reinterpret_cast<Rect*>(lua_newuserdata( L, sizeof( Rect ) )); + memcpy( pScissorRect, pObject, sizeof( Rect ) ); + } + + int ScissorRectParser::SetScissorRects( lua_State *L ) + { + auto NumArgs = lua_gettop( L ); + Uint32 RTWidth = 0; + Uint32 RTHeight = 0; + m_ScissorRects.clear(); + for( int Arg = 1; Arg <= NumArgs; ++Arg ) + { + if( lua_type( L, Arg ) == LUA_TUSERDATA ) + { + auto pScissorRect = GetUserData<Rect*>( L, Arg, m_MetatableRegistryName.c_str() ); + m_ScissorRects.emplace_back( *pScissorRect ); + } + else + { + if( RTWidth == 0 ) + RTWidth = ReadValueFromLua<Uint32>( L, Arg ); + else if( RTHeight == 0 ) + RTHeight = ReadValueFromLua<Uint32>( L, Arg ); + else + SCRIPT_PARSING_ERROR( L, "Render target size already specified (", RTWidth, "x", RTHeight, ")." ); + } + } + + if( RTWidth == 0 && RTHeight != 0 || RTWidth != 0 && RTHeight == 0 ) + SCRIPT_PARSING_ERROR( L, "Render target size is incomplete (", RTWidth, "x", RTHeight, "). Use either 0x0 or fully specified size" ); + + Uint32 NumScissorRects = static_cast<Uint32>( m_ScissorRects.size() ); + + if( NumScissorRects == 0 ) + SCRIPT_PARSING_ERROR( L, "At least one viewport must be specified" ); + + auto *pContext = LoadDeviceContextFromRegistry( L ); + pContext->SetScissorRects( NumScissorRects, m_ScissorRects.data(), RTWidth, RTHeight ); + + return 0; + } +} |