Support materials in 2D Quad Renderer!

- Lost Circle rendering along the way
- Cleaned up 2D shaders

GlitchyEditor/resources/Shaders/GlitchyEngine2D.hlsl

@@ -0,0 +1,74 @@
+#pragma EngineBuffer[ Name = "SceneConstants"; Binding = "Scene" ]
+/**
+ * Contains constants that apply to the current scene.
+ */
+cbuffer SceneConstants : register(b0)
+{
+    /**
+     * View projection matrix of the active camera.
+     */
+    float4x4 ViewProjection;
+}
+
+/**
+ * Contains the data provided by the engine for a 2D vertex shader.
+ */
+struct VS_Input
+{
+    // Geometry
+    
+    /**
+     * Vertex position
+     */
+    float2 Position     : POSITION;
+    /**
+     * Vertex texture coordinate
+     */
+    float2 Texcoord     : TEXCOORD0;
+
+    // Instance data
+    /**
+     * model to world transform matrix of the current quad.
+     */
+    float4x4 Transform  : TRANSFORM;
+    /**
+     * Color of the current quad.
+     */
+    float4 Color        : COLOR;
+    /**
+     * model to world transform matrix of the current quad.
+     */
+    float4 UVTransform  : TEXCOORD1;
+#ifdef EDITOR
+    /**
+     * The ECS ID of the entity associated with the current quad.
+     */
+    uint EntityId : ENTITYID;
+#endif
+};
+
+/**
+ * Contains the output data of the vertex shader that will be passed into the pixel shader.
+ */
+typedef struct PS_Input
+{
+    /**
+     * The screen space position of the current vertex.
+     */
+    float4 Position : SV_Position;
+    /**
+     * The transformed texture coordinates of the current vertex.
+     */
+    float2 Texcoord : TEXCOORD;
+    /**
+     * The color of the current vertex.
+     */
+    float4 Color    : COLOR;
+#ifdef EDITOR
+    /**
+     * The ECS ID of the entity associated with the current quad.
+     * This should always just be passed through.
+     */
+    nointerpolation uint EntityId : ENTITYID;
+#endif
+} VS_Output;