Commit of work up to day 11 of learnopengl.com.

08-colors-basic-light/shaders/08-frag.glsl

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+#version 330 core
+
+out vec4 FragColor;
+in vec3 FragPos;
+in vec2 TexCoord;
+in vec3 Normal;
+
+uniform sampler2D texture1;
+uniform vec3 objectColor;
+uniform vec3 lightColor;
+uniform vec3 lightPos;
+
+void main()
+{
+  float ambientStrength = 0.2;
+  vec3 ambient = ambientStrength * lightColor;
+
+  vec3 norm = normalize(Normal);
+  vec3 lightDir = normalize(lightPos - FragPos);
+
+  float diff = max(dot(norm, lightDir), 0.0);
+  vec3 diffuse = diff * lightColor;
+
+  vec3 result = ambient + diffuse;
+  FragColor = texture(texture1, TexCoord) * vec4(result, 1.0);
+}