Updated mesh shaders (better lighting with specular)

data/shaders/mesh/mesh.frag

@@ -8,26 +8,20 @@ layout (binding = 1) uniform sampler2D samplerColorMap;
 layout (location = 0) in vec3 inNormal;
 layout (location = 1) in vec3 inColor;
 layout (location = 2) in vec2 inUV;
-layout (location = 3) in vec3 inEyePos;
+layout (location = 3) in vec3 inViewVec;
 layout (location = 4) in vec3 inLightVec;
 
 layout (location = 0) out vec4 outFragColor;
 
 void main() 
 {
-	vec3 N = normalize(inNormal);
-	vec3 L = normalize(vec3(1.0));	
-	
-	vec3 Eye = normalize(-inEyePos);
-	vec3 Reflected = normalize(reflect(-inLightVec, inNormal)); 
-
-	vec4 IAmbient = vec4(vec3(0.25), 1.0);
-	vec4 IDiffuse = vec4(1.0) * max(dot(inNormal, inLightVec), 0.0);
-	
-	float specular = 0.75;
-	vec4 ISpecular = vec4(0.5, 0.5, 0.5, 1.0) * pow(max(dot(Reflected, Eye), 0.0), 4.0) * specular; 	
- 
 	vec4 color = texture(samplerColorMap, inUV) * vec4(inColor, 1.0);
 
-	outFragColor = vec4((IAmbient + IDiffuse) * color + (ISpecular * IDiffuse));
+	vec3 N = normalize(inNormal);
+	vec3 L = normalize(inLightVec);
+	vec3 V = normalize(inViewVec);
+	vec3 R = reflect(-L, N);
+	vec3 diffuse = max(dot(N, L), 0.0) * inColor;
+	vec3 specular = pow(max(dot(R, V), 0.0), 16.0) * vec3(0.75);
+	outFragColor = vec4(diffuse * color.rgb + specular, 1.0);		
 }

data/shaders/mesh/mesh.vert

@@ -18,7 +18,7 @@ layout (binding = 0) uniform UBO
 layout (location = 0) out vec3 outNormal;
 layout (location = 1) out vec3 outColor;
 layout (location = 2) out vec2 outUV;
-layout (location = 3) out vec3 outEyePos;
+layout (location = 3) out vec3 outViewVec;
 layout (location = 4) out vec3 outLightVec;
 
 void main() 
@@ -27,6 +27,10 @@ void main()
 	outColor = inColor;
 	outUV = inUV;
 	gl_Position = ubo.projection * ubo.model * vec4(inPos.xyz, 1.0);
-	outEyePos = (gl_Position).xyz;
-	outLightVec = normalize(ubo.lightPos.xyz - outEyePos);	
+	
+    vec4 pos = ubo.model * vec4(inPos, 1.0);
+    outNormal = mat3(ubo.model) * inNormal;
+	vec3 lPos = mat3(ubo.model) * ubo.lightPos.xyz;
+    outLightVec = lPos - pos.xyz;
+    outViewVec = -pos.xyz;		
 }

mesh/mesh.cpp

@@ -67,7 +67,7 @@ public:
 	struct {
 		glm::mat4 projection;
 		glm::mat4 model;
-		glm::vec4 lightPos = glm::vec4(2.0f, 2.0f, -2.0f, 1.0f);
+		glm::vec4 lightPos = glm::vec4(5.0f, 5.0f, 5.0f, 1.0f);
 	} uboVS;
 
 	struct {