SSAO, performance sucks and it flickers so tweaking is needed, also more material support

resources/EngineResources/shaders/ssao_blur_frag.glsl

@@ -0,0 +1,21 @@
+#version 450
+
+layout(location = 0) in vec2 inTextCoord;
+layout(location = 0) out float outAO;
+
+layout(set = 0, binding = 0) uniform sampler2D ssaoSampler;
+
+void main() {
+
+    vec2 texelSize = 1.0 / vec2(textureSize(ssaoSampler, 0));
+    float result = 0.0;
+
+    for (int x = -2; x <= 2; x++) {
+        for (int y = -2; y <= 2; y++) {
+            vec2 offset = vec2(float(x), float(y)) * texelSize;
+            result += texture(ssaoSampler, vec2(inTextCoord.x,inTextCoord.y) + offset).r;
+        }
+    }
+
+    outAO = result / 25.0;
+}