Update deferred_shading.fs for GLES3

examples/shaders/resources/shaders/glsl100/deferred_shading.fs

@@ -29,9 +29,9 @@ void main() {
     vec3 fragPosition = texture(gPosition, texCoord).rgb;
     vec3 normal = texture(gNormal, texCoord).rgb;
     vec3 albedo = texture(gAlbedoSpec, texCoord).rgb;
-    float specular = texture(gAlbedoSpec, texCoord).a;
+    float specular = pow(texture(gAlbedoSpec, texCoord).a,8.0);
 
-    vec3 ambient = albedo * vec3(0.1f);
+    vec3 ambient = albedo * vec3(0.03f);
     vec3 viewDirection = normalize(viewPosition - fragPosition);
 
     for(int i = 0; i < NR_LIGHTS; ++i)
@@ -41,7 +41,7 @@ void main() {
         vec3 diffuse = max(dot(normal, lightDirection), 0.0) * albedo * lights[i].color.xyz;
 
         vec3 halfwayDirection = normalize(lightDirection + viewDirection);
-        float spec = pow(max(dot(normal, halfwayDirection), 0.0), 32.0);
+        float spec = pow(max(dot(normal, halfwayDirection), 0.0), 16.0);
         vec3 specular = specular * spec * lights[i].color.xyz;
 
         // Attenuation