// HMS MediaEngine - Generator (D3D11)
// Erzeugt ohne Eingangstextur; cbuffer-Satz identisch zu Filtern (§12.6).

Texture2D    u_input_texture : register(t0);
SamplerState u_sampler       : register(s0);

cbuffer hms_params : register(b0)
{
    float4 u_resolution;      // xy = Auflösung in Pixeln
    float  u_time_seconds;
    float  u_delta_seconds;
    float  u_frame_index;
    float  u_layer_opacity;
    float  u_audio_rms;
    float  u_audio_peak;
    float  u_audio_bass;
    float  u_audio_mid;
    float  u_audio_treble;
    float  u_audio_beat;
    float4  param_color_a;
    float4  param_color_b;
    float   param_type;
    float   param_angle;
    float   param_center_x;
    float   param_center_y;
    float   param_width;
    float   param_phase;
    float   param_speed;
    float  _pad0;
    float  _pad1;
    float  _pad2;
};


float4 mainPS(float4 pos : SV_POSITION, float2 uv : TEXCOORD0) : SV_Target
{
    float2 p = uv - float2(param_center_x, param_center_y);
    float ang = radians(param_angle);
    float2 dir = float2(cos(ang), sin(ang));
    float t;
    if (param_type < 0.5)
    {
        t = dot(p, dir) / max(param_width, 0.0001) + 0.5;
    }
    else
    {
        t = length(p) / max(param_width, 0.0001);
    }
    t += param_phase + u_time_seconds * param_speed;
    t = frac(t);
    float4 col = lerp(param_color_a, param_color_b, saturate(t));
    col.a *= u_layer_opacity;
    return col;
}