Macro rafx::declare_render_feature

macro_rules! declare_render_feature {
    ($struct_name:ident, $atomic_constant_name:ident) => { ... };
}

Use to declare a new render feature that can be registered. Registration allows easy global access to the render feature index from anywhere in the binary

Use like this: rafx::declare_render_feature!(Debug3DRenderFeature, DEBUG_3D_RENDER_FEATURE);

The first name is all that really matters, the second name just needs to be a constant that is exposed via the first name (i.e. Debug3DRenderFeature::feature_index())

This macro will also define the following helper functions in the same scope.

• render_feature_index(): Syntactic sugar for Debug3DRenderFeature::feature_index().
• render_feature_debug_name(): Syntactic sugar for Debug3DRenderFeature::feature_debug_name().
• render_feature_debug_constants(): Returns a struct containing &'static str debug strings for the feature.