Added SSAO example (wip)

data/shaders/ssao/composition.frag

@@ -0,0 +1,51 @@
+#version 450
+
+#extension GL_ARB_separate_shader_objects : enable
+#extension GL_ARB_shading_language_420pack : enable
+
+layout (binding = 0) uniform sampler2D samplerposition;
+layout (binding = 1) uniform sampler2D samplerNormal;
+layout (binding = 2) uniform sampler2D samplerAlbedo;
+layout (binding = 3) uniform sampler2D samplerSSAO;
+layout (binding = 4) uniform sampler2D samplerSSAOBlur;
+layout (binding = 5) uniform UBO 
+{
+	mat4 _dummy;
+	uint ssao;
+	uint ssaoOnly;
+	uint ssaoBlur;
+} uboParams;
+
+layout (location = 0) in vec2 inUV;
+
+layout (location = 0) out vec4 outFragColor;
+
+void main() 
+{
+	vec3 fragPos = texture(samplerposition, inUV).rgb;
+	vec3 normal = texture(samplerNormal, inUV).rgb;
+	vec4 albedo = texture(samplerAlbedo, inUV);
+	 
+	float ssao = (uboParams.ssaoBlur == 1) ? texture(samplerSSAOBlur, inUV).r : texture(samplerSSAO, inUV).r;
+
+	outFragColor = vec4(vec3(0.0), 1.0);
+
+	if (uboParams.ssaoOnly == 1)
+	{
+		outFragColor.rgb = ssao.rrr;
+	}
+	else
+	{
+		if (uboParams.ssao == 1)
+		{
+			outFragColor.rgb = ssao.rrr;
+
+			if (uboParams.ssaoOnly != 1)
+				outFragColor.rgb *= albedo.rgb;
+		}
+		else
+		{
+			outFragColor.rgb = albedo.rgb;
+		}
+	}
+}