Added shaders for deferred shadow example

data/shaders/deferredshadows/debug.frag

@@ -0,0 +1,43 @@
+#version 450
+
+#extension GL_ARB_separate_shader_objects : enable
+#extension GL_ARB_shading_language_420pack : enable
+
+layout (binding = 1) uniform sampler2D samplerPosition;
+layout (binding = 2) uniform sampler2D samplerNormal;
+layout (binding = 3) uniform sampler2D samplerAlbedo;
+layout (binding = 5) uniform sampler2DArray samplerDepth;
+
+layout (location = 0) in vec3 inUV;
+
+layout (location = 0) out vec4 outFragColor;
+
+float LinearizeDepth(float depth)
+{
+  float n = 1.0; // camera z near
+  float f = 96.0; // camera z far
+  float z = depth;
+  return (2.0 * n) / (f + n - z * (f - n));	
+}
+
+void main() 
+{
+	vec3 components[3];
+	components[0] = texture(samplerPosition, inUV.st).rgb;  
+	components[1] = texture(samplerNormal, inUV.st).rgb;  
+	//components[2] = texture(samplerDepth, inUV.st).rgb;  
+	// Uncomment to display specular component
+	//components[2] = vec3(texture(samplerAlbedo, inUV.st).a);  
+	
+	// Select component depending on z coordinate of quad
+	highp int index = int(inUV.z);
+	if (index == 2)
+	{
+		float depth = texture(samplerDepth, vec3(inUV.st, 0.0)).r;
+		outFragColor = vec4(vec3(1.0-LinearizeDepth(depth)), 1.0);
+	}
+	else
+	{
+		outFragColor.rgb = components[index];
+	}
+}