Added basic input attachment sample

data/shaders/inputattachments/attachmentread.frag

@@ -0,0 +1,19 @@
+#version 450
+
+layout (input_attachment_index = 0, binding = 0) uniform subpassInput inputColor;
+layout (input_attachment_index = 1, binding = 1) uniform subpassInput inputDepth;
+
+layout (binding = 2) uniform UBO {
+	vec2 range;
+	int attachmentIndex;
+} ubo;
+
+layout (location = 0) out vec4 outColor;
+
+void main() 
+{
+	// Read values from previous sub pass
+	vec3 col = ubo.attachmentIndex == 0 ? subpassLoad(inputColor).rgb : subpassLoad(inputDepth).rrr;
+
+	outColor.rgb = ((col - ubo.range[0]) * 1.0 / (ubo.range[1] - ubo.range[0]));
+}