Release v1.0.0

1 files changed, 133 insertions, 0 deletions

diff --git a/RenderScript/src/ViewportParser.cpp b/RenderScript/src/ViewportParser.cpp
new file mode 100644
index 0000000..7afbfe6
--- /dev/null
+++ b/RenderScript/src/ViewportParser.cpp
@@ -0,0 +1,133 @@
+/*     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 "ViewportParser.h"
+
+namespace Diligent
+{
+    const Char* ViewportParser::ViewportLibName = "Viewport";
+
+    ViewportParser::ViewportParser( IRenderDevice *pRenderDevice, lua_State *L ) :
+        EngineObjectParserBase( pRenderDevice, L, ViewportLibName ),
+        m_SetViewportsBinding( this, L, "Context", "SetViewports", &ViewportParser::SetViewports )
+    {
+        m_Viewports.reserve( 8 );
+
+        //  NumVertices and NumIndices are in Union
+        DEFINE_BINDER( m_Bindings, Viewport, TopLeftX, Float32, Validator<Float32>() )
+        DEFINE_BINDER( m_Bindings, Viewport, TopLeftY, Float32, Validator<Float32>() )
+        DEFINE_BINDER( m_Bindings, Viewport, Width,    Float32, Validator<Float32>() )
+        DEFINE_BINDER( m_Bindings, Viewport, Height,   Float32, Validator<Float32>() )
+        DEFINE_BINDER( m_Bindings, Viewport, MinDepth, Float32, Validator<Float32>() )
+        DEFINE_BINDER( m_Bindings, Viewport, MaxDepth, Float32, Validator<Float32>() )
+    };
+
+    void ViewportParser::CreateObj( lua_State *L )
+    {
+        INIT_LUA_STACK_TRACKING(L);
+
+        Viewport VP;
+        ParseLuaTable( L, 1, &VP, m_Bindings );
+        if( VP.Width < 0 )
+            SCRIPT_PARSING_ERROR( L, "VP width (", VP.Width, ") cannot be negative" );
+        if( VP.Height < 0 )
+            SCRIPT_PARSING_ERROR( L, "VP height (", VP.Height, ") cannot be negative" );
+        if( VP.MinDepth > VP.MaxDepth )
+            SCRIPT_PARSING_ERROR( L, "VP depth range (", VP.MinDepth, ", ", VP.MaxDepth, ") is incorrect" );
+
+        CHECK_LUA_STACK_HEIGHT();
+
+        auto pViewport = reinterpret_cast<Viewport*>(lua_newuserdata( L, sizeof( Viewport ) ));
+        memcpy(pViewport, &VP, sizeof(Viewport));
+
+        CHECK_LUA_STACK_HEIGHT( +1 );
+    }
+
+    void ViewportParser::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 ViewportParser::ReadField( lua_State *L, void *pData, const Char *Field )
+    {
+        auto pViewport = reinterpret_cast<Viewport*>(pData);
+        PushField( L, pViewport, Field, m_Bindings );
+    }
+
+    void ViewportParser::UpdateField( lua_State *L, void *pData, const Char *Field )
+    {
+        auto pViewport = reinterpret_cast<Viewport*>(pData);
+        Diligent::UpdateField( L, -1, pViewport, Field, m_Bindings );
+    }
+
+    void ViewportParser::PushExistingObject( lua_State *L, const void *pObject )
+    {
+        auto pViewport = reinterpret_cast<Viewport*>(lua_newuserdata( L, sizeof( Viewport ) ));
+        memcpy( pViewport, pObject, sizeof( Viewport ) );
+    }
+
+    int ViewportParser::SetViewports( lua_State *L )
+    {
+        auto *pContext = LoadDeviceContextFromRegistry( L );
+        auto NumArgs = lua_gettop( L );
+        if( NumArgs == 0 )
+            pContext->SetViewports( 1, nullptr, 0, 0 );
+        else
+        {
+            Uint32 RTWidth  = 0;
+            Uint32 RTHeight = 0;
+            m_Viewports.clear();
+            for( int Arg = 1; Arg <= NumArgs; ++Arg )
+            {
+                if( lua_type( L, Arg ) == LUA_TUSERDATA )
+                {
+                    auto pViewport = GetUserData<Viewport*>( L, Arg, m_MetatableRegistryName.c_str() );
+                    m_Viewports.emplace_back( *pViewport );
+                }
+                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 NumViewports = static_cast<Uint32>( m_Viewports.size() );
+
+            if( NumViewports == 0 )
+                SCRIPT_PARSING_ERROR( L, "At least one viewport must be specified" );
+
+            pContext->SetViewports( NumViewports, m_Viewports.data(), RTWidth, RTHeight );
+        }
+
+        return 0;
+    }
+}