Updated bloom shaders (better lighting with specular)

bloom/bloom.cpp

@@ -80,7 +80,7 @@ public:
 		int32_t texWidth = TEX_DIM;
 		int32_t texHeight = TEX_DIM;
 		float blurScale = 1.0f;
-		float blurStrength = 1.0f;
+		float blurStrength = 1.5f;
 		uint32_t horizontal;
 	};
 

data/shaders/bloom/phongpass.frag

@@ -8,28 +8,26 @@ layout (binding = 1) uniform sampler2D colorMap;
 layout (location = 0) in vec3 inNormal;
 layout (location = 1) in vec2 inUV;
 layout (location = 2) in vec3 inColor;
-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() 
 {
-	// No light calculations for glow color 
+	vec3 ambient = vec3(0.0f);
-	// Use max. color channel value
+	
-	// to detect bright glow emitters
+	// Adjust light calculations for glow color 
 	if ((inColor.r >= 0.9) || (inColor.g >= 0.9) || (inColor.b >= 0.9)) 
 	{
-		outFragColor.rgb = inColor;
+		ambient = inColor * 0.25;
 	}
-	else
-	{
-		vec3 Eye = normalize(-inEyePos);
-		vec3 Reflected = normalize(reflect(-inLightVec, inNormal)); 
 
-		vec4 IDiffuse = vec4(inColor, 1.0) * max(dot(inNormal, inLightVec), 0.0);
+	vec3 N = normalize(inNormal);
-		float specular = 0.25;
+	vec3 L = normalize(inLightVec);
-		vec4 ISpecular = vec4(0.5, 0.5, 0.5, 1.0) * pow(max(dot(Reflected, Eye), 0.0), 16.0) * specular; 
+	vec3 V = normalize(inViewVec);
-		outFragColor = IDiffuse + ISpecular; 
+	vec3 R = reflect(-L, N);
-	}
+	vec3 diffuse = max(dot(N, L), 0.0) * inColor;
+	vec3 specular = pow(max(dot(R, V), 0.0), 8.0) * vec3(0.75);
+	outFragColor = vec4(ambient + diffuse + specular, 1.0);	
 }

data/shaders/bloom/phongpass.vert

@@ -11,13 +11,13 @@ layout (location = 3) in vec3 inNormal;
 layout (binding = 0) uniform UBO 
 {
 	mat4 projection;
-	mat4 model;
+	mat4 modelview;
 } ubo;
 
 layout (location = 0) out vec3 outNormal;
 layout (location = 1) out vec2 outUV;
 layout (location = 2) out vec3 outColor;
-layout (location = 3) out vec3 outEyePos;
+layout (location = 3) out vec3 outViewVec;
 layout (location = 4) out vec3 outLightVec;
 
 void main() 
@@ -25,8 +25,11 @@ void main()
 	outNormal = inNormal;
 	outColor = inColor;
 	outUV = inUV;
-	gl_Position = ubo.projection * ubo.model * inPos;
+	gl_Position = ubo.projection * ubo.modelview * inPos;
-	outEyePos = vec3(ubo.model * inPos);
+
-	vec4 lightPos = vec4(-5.0, -5.0, 0.0, 1.0);
+	vec3 lightPos = vec3(-5.0, -5.0, 0.0);
-	outLightVec = normalize(lightPos.xyz - inPos.xyz);
+    vec4 pos = ubo.modelview * inPos;
+    outNormal = mat3(ubo.modelview) * inNormal;
+    outLightVec = lightPos - pos.xyz;
+    outViewVec = -pos.xyz;	
 }