2025.6.1

exchange/exchangesource/MeshViewer/application/render/shaders/default.frag

@@ -0,0 +1,42 @@
+#version 420 core
+out vec4 FragColor;
+
+in vec3 Normal;
+in vec3 FragPos;
+in vec3 viewPos;
+  
+uniform vec3 lightPos;
+uniform vec4 lightColor;
+uniform vec4 meshColor;
+
+struct Material {
+    vec4 ambient;
+    vec4 diffuse;
+    vec4 specular;
+    vec4 emissive;
+    float shininess;
+}; 
+  
+uniform Material material;
+
+void main()
+{
+    vec3 normal = normalize(Normal);
+
+    vec3 lightDir   = normalize(lightPos - FragPos);
+    vec3 viewDir    = normalize(viewPos - FragPos);
+    vec3 halfwayDir = normalize(lightDir + viewDir);
+
+    // diffuse 
+    float diff = max(dot(normal, lightDir), 0.0);
+
+    // specular
+    vec3 reflectDir = reflect(-lightDir, normal);
+    float spec = pow(max(dot(viewDir, reflectDir), 0.0), material.shininess);
+
+    vec4 ambient = lightColor * material.ambient;
+    vec4 diffuse = lightColor * (diff * material.diffuse);
+    vec4 specular = lightColor * (spec *material.specular);
+
+    FragColor =  ambient + diffuse + specular + material.emissive;
+}