Pro Android Apps Performance Optimization

Adding Variables to Script

Let's modify Listing 9–5 a little bit to learn more about the reflected layer. So far, we only saw how the hello_world routine from the script was reflected in Listing 9–2. Here we are going to add more variables in the script, which we will call hellorendering2.rs, as shown in Listing 9–9.

Listing 9–9. Changing Background Color (Second Version)

#pragma version(1) #pragma rs java_package_name(com.apress.proandroid.ch9) #include "rs_graphics.rsh" // we removed init() as it was empty anyway float red = 0.0f; // initialized to 1.0f float green; // purposely not initialized static float blue; // purposely not initialized, static const float alpha = 1.0f; // constant int root() {     // clear the background color ...