Added Vulkan examples sources!

data/shaders/geometryshader/mesh.frag

@@ -0,0 +1,25 @@
+#version 450
+
+#extension GL_ARB_separate_shader_objects : enable
+#extension GL_ARB_shading_language_420pack : enable
+
+layout (location = 0) in vec2 vTexcoord;
+layout (location = 1) in vec3 vNormal;
+layout (location = 2) in vec3 vColor;
+layout (location = 3) in vec3 vEyePos;
+layout (location = 4) in vec3 vLightVec;
+
+layout (location = 0) out vec4 outFragColor;
+
+void main() 
+{
+  vec3 Eye = normalize(-vEyePos);
+  vec3 Reflected = normalize(reflect(-vLightVec, vNormal)); 
+ 
+  vec4 IAmbient = vec4(0.2, 0.2, 0.2, 1.0);
+  vec4 IDiffuse = vec4(0.5, 0.5, 0.5, 0.5) * max(dot(vNormal, vLightVec), 0.0);
+  float specular = 0.75;
+  vec4 ISpecular = vec4(0.5, 0.5, 0.5, 1.0) * pow(max(dot(Reflected, Eye), 0.0), 0.8) * specular; 
+ 
+  outFragColor = vec4((IAmbient + IDiffuse) * vec4(vColor, 1.0) + ISpecular);
+}