Добавить ресурсы маджонга

шейдеры/освещение-изображение.frag

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+#ifdef GL_ES
+    precision highp float;
+#endif
+
+varying vec3 position;
+varying vec3 normal;
+
+const vec3 lightPosition = vec3(10, 20, 10);
+
+varying vec2 texCoord;
+uniform sampler2D image;
+
+float lambertianReflectanceStrength(vec3 position, vec3 lightPosition)
+{
+    vec3 lightDirection = normalize(lightPosition - position);
+    // Light flux direction.
+    float strength = dot(normal, lightDirection);
+    float diffuse = max(strength, 0.2);
+
+    return diffuse;
+}
+
+void main()
+{
+    vec3 texColor = texture2D(image, texCoord).rgb;
+    vec3 finalColor = texColor * lambertianReflectanceStrength(position, lightPosition);
+    gl_FragColor = vec4(finalColor, 1.0);
+}