+ Added some more default values for shaders so genericimage2 displays properly

Signed-off-by: Alexis Maiquez <almamu@almamu.com>

src/WallpaperEngine/Render/Objects/Effects/CPass.cpp

@@ -464,6 +464,8 @@ void CPass::setupUniforms ()
     // register variables like brightness and alpha with some default value
     this->addUniform ("g_Brightness", 1.0f);
     this->addUniform ("g_UserAlpha", 1.0f);
+    this->addUniform ("g_Alpha", 1.0f);
+    this->addUniform ("g_Color", glm::vec3 {1.0f, 1.0f, 1.0f});
     // add some external variables
     this->addUniform ("g_Time", &g_Time);
     // add model-view-projection matrix