Specular

data/shaders/texturemipmapgen/texture.frag

@@ -9,10 +9,21 @@ layout (set = 0, binding = 2) uniform sampler samplers[3];
 layout (location = 0) in vec2 inUV;
 layout (location = 1) in float inLodBias;
 layout (location = 2) flat in int inSamplerIndex;
+layout (location = 3) in vec3 inNormal;
+layout (location = 4) in vec3 inViewVec;
+layout (location = 5) in vec3 inLightVec;
 
 layout (location = 0) out vec4 outFragColor;
 
 void main() 
 {
-	outFragColor = texture(sampler2D(textureColor, samplers[inSamplerIndex]), inUV, inLodBias);
+	vec4 color = texture(sampler2D(textureColor, samplers[inSamplerIndex]), inUV, inLodBias);
+
+	vec3 N = normalize(inNormal);
+	vec3 L = normalize(inLightVec);
+	vec3 V = normalize(inViewVec);
+	vec3 R = reflect(L, N);
+	vec3 diffuse = max(dot(N, L), 0.65) * vec3(1.0);
+	float specular = pow(max(dot(R, V), 0.0), 16.0) * color.a;
+	outFragColor = vec4(diffuse * color.rgb + specular, 1.0);	
 }

data/shaders/texturemipmapgen/texture.vert

@@ -12,6 +12,7 @@ layout (binding = 0) uniform UBO
 	mat4 projection;
 	mat4 view;
 	mat4 model;
+	vec4 viewPos;
 	float lodBias;
 	int samplerIndex;
 } ubo;
@@ -19,6 +20,9 @@ layout (binding = 0) uniform UBO
 layout (location = 0) out vec2 outUV;
 layout (location = 1) out float outLodBias;
 layout (location = 2) flat out int outSamplerIndex;
+layout (location = 3) out vec3 outNormal;
+layout (location = 4) out vec3 outViewVec;
+layout (location = 5) out vec3 outLightVec;
 
 out gl_PerVertex 
 {
@@ -30,5 +34,13 @@ void main()
 	outUV = inUV * vec2(50.0, 2.0);
 	outLodBias = ubo.lodBias;
 	outSamplerIndex = ubo.samplerIndex;
-	gl_Position = ubo.projection * ubo.view * ubo.model * vec4(inPos, 1.0);
+
+	vec3 worldPos = vec3(ubo.model * vec4(inPos, 1.0));
+
+	gl_Position = ubo.projection * ubo.view * ubo.model * vec4(inPos.xyz, 1.0);
+
+	outNormal = mat3(inverse(transpose(ubo.model))) * inNormal;
+	vec3 lightPos = vec3(-30.0, 0.0, 0.0);
+	outLightVec = worldPos - lightPos;
+	outViewVec = ubo.viewPos.xyz - worldPos;		
 }