Revert "Revert "Shadows""

This reverts commit 73b8bff1f3.

resources/Shaders/Shadow.frag.glsl

@@ -0,0 +1,22 @@
+#version 430
+
+#define ALPHA_CUTOFF 0.3
+
+layout (binding = 24) uniform sampler2D DiffuseTexture;
+uniform float Alpha;
+
+in VertexData{
+	vec2 TextureCoordinate;
+}Input;
+
+layout (location = 0) out float ShadowMap;
+
+void main()
+{
+	vec4 diffuseTexel = texture(DiffuseTexture, Input.TextureCoordinate) * Alpha;
+	
+	if (diffuseTexel.a < ALPHA_CUTOFF)
+	{
+		discard;
+	}
+}