add fog

GrafikaProjekt/pliki/shaders/shader_tex.frag

@@ -5,6 +5,7 @@ uniform vec3 lightDir;
 
 in vec3 interpNormal;
 in vec2 interpTexCoord;
+in float visibility;
 
 void main()
 {
@@ -12,5 +13,5 @@ void main()
 	vec3 color = texture2D(textureSampler, modifiedTexCoord).rgb;
 	vec3 normal = normalize(interpNormal);
 	float diffuse = max(dot(normal, -lightDir), 0.0);
-	gl_FragColor = vec4(color * diffuse, 1.0);
+	gl_FragColor = mix(vec4(0.0f, 0.2f, 0.5f, 1.0f), vec4(color * diffuse, 1.0), visibility);
 }

GrafikaProjekt/pliki/shaders/shader_tex.vert

@@ -9,10 +9,18 @@ uniform mat4 modelMatrix;
 
 out vec3 interpNormal;
 out vec2 interpTexCoord;
+out float visibility;
+
+const float density = 0.15;
+const float gradient = 1.5;
 
 void main()
 {
 	gl_Position = modelViewProjectionMatrix * vec4(vertexPosition, 1.0);
 	interpNormal = (modelMatrix * vec4(vertexNormal, 0.0)).xyz;
 	interpTexCoord = vertexTexCoord;
+
+	float distance = length(gl_Position.xyz);
+	visibility = exp(-pow((distance*density),gradient));
+	visibility = clamp(visibility, 0.0, 1.0);
 }

GrafikaProjekt/pliki/src/main.cpp

@@ -111,7 +111,7 @@ void renderScene()
 	perspectiveMatrix = Core::createPerspectiveMatrix();
 
 	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-	glClearColor(0.0f, 0.1f, 0.3f, 1.0f);
+	glClearColor(0.0f, 0.2f, 0.5f, 1.0f);
 
 	glm::mat4 shipInitialTransformation = glm::translate(glm::vec3(0,-0.25f,0)) * glm::rotate(glm::radians(180.0f), glm::vec3(0,1,0)) * glm::scale(glm::vec3(0.25f));
 	glm::mat4 shipModelMatrix = glm::translate(cameraPos + cameraDir * 0.5f) * glm::mat4_cast(glm::inverse(rotation)) * shipInitialTransformation;