Fixed sRGB for GLES renderer.

It's a bit ugly solution because we should handle it properly in one place and not add another sRGB correction... But it's already working solution and it doesn't affect the OpenGL renderer, so we can use it until better fix will be done.
Now the GLES renderer looks almost the same as the original OpenGL 3.x one :)

data/shaders/object_pass2.frag

@@ -40,7 +40,11 @@ void main(void)
         col = vec4(new_color.r, new_color.g, new_color.b, col.a);
     }
 
+#ifdef GL_ES
+    col.xyz *= color.xyz;
+#else
     col.xyz *= pow(color.xyz, vec3(2.2));
+#endif
     float specmap = texture(SpecMap, uv).g;
     float emitmap = texture(SpecMap, uv).b;
     FragColor = vec4(getLightFactor(col.xyz, vec3(1.), specmap, emitmap), 1.);

data/shaders/utils/getLightFactor.frag

@@ -14,6 +14,10 @@ vec3 getLightFactor(vec3 diffuseMatColor, vec3 specularMatColor, float specMapVa
     vec3 DiffuseComponent = texture(DiffuseMap, tc).xyz;
     vec3 SpecularComponent = texture(SpecularMap, tc).xyz;
     float ao = texture(SSAO, tc).x;
+#ifdef GL_ES
+    DiffuseComponent = pow(DiffuseComponent, vec3(1. / 2.2));
+    SpecularComponent = pow(SpecularComponent, vec3(1. / 2.2));
+#endif
     vec3 tmp = diffuseMatColor * DiffuseComponent * (1. - specMapValue) + specularMatColor * SpecularComponent * specMapValue;
     vec3 emitCol = diffuseMatColor.xyz * diffuseMatColor.xyz * diffuseMatColor.xyz * 15.;
     return tmp * ao + (emitMapValue * emitCol);