Added Vulkan examples sources!

data/shaders/vulkanscene/logo.frag

@@ -0,0 +1,22 @@
+#version 450
+
+layout (location = 0) in vec2 inUV;
+layout (location = 1) in vec3 inNormal;
+layout (location = 2) in vec3 inColor;
+layout (location = 3) in vec3 inEyePos;
+layout (location = 4) in vec3 inLightVec;
+
+layout (location = 0) out vec4 outFragColor;
+
+void main() 
+{
+  vec3 Eye = normalize(-inEyePos);
+  vec3 Reflected = normalize(reflect(-inLightVec, inNormal));
+
+  vec4 diff = vec4(inColor, 1.0) * max(dot(inNormal, inLightVec), 0.0);
+  float shininess = 0.0;
+  vec4 spec = vec4(1.0, 1.0, 1.0, 1.0) * pow(max(dot(Reflected, Eye), 0.0), 2.5) * shininess;
+
+  outFragColor = diff + spec;
+  outFragColor.a = 1.0; 
+}