From 7e7c6586948e4ce1eacce20f70b73fcd31d50e32 Mon Sep 17 00:00:00 2001
From: Jose Antonio Leal de Farias <jalf@stairs.com.br>
Date: Thu, 24 Jan 2013 23:17:05 -0300
Subject: [PATCH] Fix bug using several blend modes at same time on PSVITA.

---
 MonoGame.Framework/Graphics/GraphicsDevice.cs    | 1 -
 MonoGame.Framework/Graphics/SpriteBatch.cs       | 6 +++++-
 MonoGame.Framework/Graphics/States/BlendState.cs | 7 +++++--
 3 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/MonoGame.Framework/Graphics/GraphicsDevice.cs b/MonoGame.Framework/Graphics/GraphicsDevice.cs
index 2854da809c7..5945eba97e9 100644
--- a/MonoGame.Framework/Graphics/GraphicsDevice.cs
+++ b/MonoGame.Framework/Graphics/GraphicsDevice.cs
@@ -1094,7 +1094,6 @@ public void Clear(ClearOptions options, Vector4 color, float depth, int stencil)
 
             _graphics.SetClearColor(color.ToPssVector4());
             _graphics.Clear();
-            ApplyState(false);
 #elif OPENGL
 
             // Unlike with XNA and DirectX...  GL.Clear() obeys several
diff --git a/MonoGame.Framework/Graphics/SpriteBatch.cs b/MonoGame.Framework/Graphics/SpriteBatch.cs
index a83aca839e1..e7ba85e48cd 100644
--- a/MonoGame.Framework/Graphics/SpriteBatch.cs
+++ b/MonoGame.Framework/Graphics/SpriteBatch.cs
@@ -87,7 +87,11 @@ public void End ()
 
 			if (_sortMode != SpriteSortMode.Immediate)
 				Setup();
-
+#if PSM   
+            GraphicsDevice.BlendState = _blendState;
+            _blendState.ApplyState(GraphicsDevice);
+#endif
+            
             _batcher.DrawBatch(_sortMode);
         }
 		
diff --git a/MonoGame.Framework/Graphics/States/BlendState.cs b/MonoGame.Framework/Graphics/States/BlendState.cs
index e0e3b490b8d..f14c26160c9 100644
--- a/MonoGame.Framework/Graphics/States/BlendState.cs
+++ b/MonoGame.Framework/Graphics/States/BlendState.cs
@@ -323,24 +323,27 @@ static private SharpDX.Direct3D11.ColorWriteMaskFlags GetColorWriteMask(ColorWri
 #if PSM
         internal void ApplyState(GraphicsDevice device)
         {
-#warning its a simplistic implementation..i am not sure about this equivalence
-            device._graphics.Enable(EnableMode.Blend);     
             if (device.BlendState == BlendState.Additive)
             {
+                device._graphics.Enable(EnableMode.Blend);    
                 device._graphics.SetBlendFunc(BlendFuncMode.Add, BlendFuncFactor.One, BlendFuncFactor.One);
             }
             else if (device.BlendState == BlendState.AlphaBlend)
             {
+                device._graphics.Enable(EnableMode.Blend);     
                 device._graphics.SetBlendFunc(BlendFuncMode.Add, BlendFuncFactor.SrcAlpha, BlendFuncFactor.OneMinusSrcAlpha);
             }
             else if (device.BlendState == BlendState.NonPremultiplied)
             {
+                device._graphics.Enable(EnableMode.Blend);     
                 device._graphics.SetBlendFunc(BlendFuncMode.Add, BlendFuncFactor.SrcColor, BlendFuncFactor.OneMinusSrcColor);
             }
             else if (device.BlendState == BlendState.Opaque)
             {
+                device._graphics.Enable(EnableMode.Blend);     
                 device._graphics.SetBlendFunc(BlendFuncMode.Add, BlendFuncFactor.One, BlendFuncFactor.Zero);
             }
+            else device._graphics.Disable(EnableMode.Blend);           
         }
 #endif
 	}