add initial examples, replacing the 'Demos/Demos3'. Will make it work cross-platform, OpenGL3/OpenGL2 and add more examples to it.

examples/ThirdPartyLibs/Gwen/Renderers/OpenGL.h

@@ -0,0 +1,60 @@
+/*
+	GWEN
+	Copyright (c) 2011 Facepunch Studios
+	See license in Gwen.h
+*/
+
+#ifndef GWEN_RENDERERS_OPENGL_H
+#define GWEN_RENDERERS_OPENGL_H
+
+#include "Gwen/Gwen.h"
+#include "Gwen/BaseRender.h"
+
+namespace Gwen 
+{
+	namespace Renderer 
+	{
+
+		class OpenGL : public Gwen::Renderer::Base
+		{
+			public:
+
+				struct Vertex
+				{
+					float x, y, z;
+					float u, v;
+					unsigned char r, g, b, a;
+				};
+
+				OpenGL();
+				~OpenGL();
+
+				virtual void Begin();
+				virtual void End();
+
+				virtual void SetDrawColor( Gwen::Color color );
+				virtual void DrawFilledRect( Gwen::Rect rect );
+
+				void StartClip();
+				void EndClip();
+
+				void DrawTexturedRect( Gwen::Texture* pTexture, Gwen::Rect pTargetRect, float u1=0.0f, float v1=0.0f, float u2=1.0f, float v2=1.0f );
+				void LoadTexture( Gwen::Texture* pTexture );
+				void FreeTexture( Gwen::Texture* pTexture );
+
+			protected:
+
+				static const int	MaxVerts = 1024;
+
+
+				void Flush();
+				void AddVert( int x, int y, float u = 0.0f , float v = 0.0f );
+
+				Gwen::Color			m_Color;
+				int					m_iVertNum;
+				Vertex				m_Vertices[ MaxVerts ];
+		};
+
+	}
+}
+#endif