DragonRuby Game Toolkit - Uniforms Definition

effects.frag.hlsl

Texture2D scene : register(t0, space2);
SamplerState sampler0 : register(s0, space2);

// Scalar uniforms passed from Ruby via `uniforms: [{ name:, value:, type: }, ...]`.
// Members must match the array order. Fragment uniform buffers live in space3
// (b registers) for SDL_shadercross HLSL.
cbuffer Uniforms : register(b0, space3) {
  int tick_count;
  float time;
};

main.rb

def tick args
  args.outputs.shader = {
    path: "shaders/effect.frag.hlsl",
    uniforms: {
      tick_count: { value: Kernel.tick_count, type: :int },
      time: { value: Kernel.tick_count.fdiv(60), type: :float },
    }
  }
end