new stuff

assimp/test/models/glTF2/BoxTextured-glTF-techniqueWebGL/BoxTextured1.frag

@@ -0,0 +1,29 @@
+precision highp float;
+uniform sampler2D u_diffuse;
+uniform vec4 u_specular;
+uniform float u_shininess;
+uniform float u_transparency;
+varying vec3 v_position;
+varying vec3 v_normal;
+varying vec2 v_texcoord0;
+void main(void) {
+    vec3 normal = normalize(v_normal);
+    vec4 diffuse = texture2D(u_diffuse, v_texcoord0);
+    vec3 diffuseLight = vec3(0.0, 0.0, 0.0);
+    vec3 specular = u_specular.rgb;
+    vec3 specularLight = vec3(0.0, 0.0, 0.0);
+    vec3 ambient = diffuse.rgb;
+    vec3 viewDir = -normalize(v_position);
+    vec3 ambientLight = vec3(0.0, 0.0, 0.0);
+    ambientLight += vec3(0.2, 0.2, 0.2);
+    vec3 l = vec3(0.0, 0.0, 1.0);
+    diffuseLight += vec3(1.0, 1.0, 1.0) * max(dot(normal, l), 0.); 
+    vec3 reflectDir = reflect(-l, normal);
+    float specularIntensity = max(0., pow(max(dot(reflectDir, viewDir), 0.), u_shininess));
+    specularLight += vec3(1.0, 1.0, 1.0) * specularIntensity;
+    vec3 color = vec3(0.0, 0.0, 0.0);
+    color += diffuse.rgb * diffuseLight;
+    color += specular * specularLight;
+    color += ambient * ambientLight;
+    gl_FragColor = vec4(color * diffuse.a * u_transparency, diffuse.a * u_transparency);
+}