Add everything.

Resources/Shaders/frag.glsl

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+#version 330 core
+out vec4 FragColor;
+
+in vec3 FragPos;
+in vec3 Normal;
+in vec2 TexCoord;
+
+uniform sampler2D texture1;
+uniform sampler2D texture2;
+uniform float mixAmount = 0.2;
+
+uniform vec3 lightPos;
+uniform vec3 viewPos;
+uniform vec3 lightColor = vec3(1.0);
+
+uniform float ambientStrength = 0.2;
+uniform float specularStrength = 0.5;
+uniform float shininess = 32.0;
+
+void main()
+{
+    vec3 norm = normalize(Normal);
+    vec3 lightDir = normalize(lightPos - FragPos);
+    vec3 viewDir = normalize(viewPos - FragPos);
+
+    // Ambient
+    vec3 ambient = ambientStrength * lightColor;
+
+    // Diffuse
+    float diff = max(dot(norm, lightDir), 0.0);
+    vec3 diffuse = diff * lightColor;
+
+    // Specular (Blinn-Phong)
+    vec3 halfwayDir = normalize(lightDir + viewDir);
+    float spec = pow(max(dot(norm, halfwayDir), 0.0), shininess);
+    vec3 specular = specularStrength * spec * lightColor;
+
+    // Texture mixing (corrected)
+    vec4 tex1 = texture(texture1, TexCoord);
+    vec4 tex2 = texture(texture2, TexCoord);
+    vec4 mixedTex = mix(tex1, tex2, mixAmount);
+    vec3 texColor = mixedTex.rgb;
+
+    vec3 result = (ambient + diffuse + specular) * texColor;
+    FragColor = vec4(result, mixedTex.a);  // Preserve alpha if needed
+}