Phase 3: Alle 24 Pflicht-Plugins (10 Generatoren + 14 Filter, §15.1/§15.2)

- 10 Generatoren mit Manifest + HLSL + GLSL + GLES je Plugin:
  solid, gradient, checker_grid, stripes_chaser, noise_clouds
  (AQ Octaves 2/3/5), plasma, wave_bars, shapes, drops_ripples,
  starfield (AQ 32/128/512 Partikel)
- 14 Filter mit Manifest + Shader je Backend:
  transform2d (keine AQ-Geometriereduktion), color_adjust,
  gradient_map, blur_sharpen (separabel 2-Pass, AQ 5/9/17 Samples),
  pixelate_quantize, mirror_tile, kaleidoscope, wave_displace
  (Noise adaptiv, Amount unverändert), rgb_split, glow_bloom
  (Kaskade 2/4/8), edge_emboss, vignette, strobe_pulse (Safety
  clamp 2 Hz, nie durch DMX allein freischaltbar), feedback_trails
  (Double-Buffer, Clear-Trigger, §15.3)
- Uniform-Vertrag §14.4 in allen 75 Shadern; Generatoren sampeln nie
  u_input_texture; alle Filter mit mix-0-Bypass (§15.3)
- 195 parametrisierte Plugin-Tests: Manifest/Backends/DMX-Slots<=8/
  AQ>=3 Varianten/Uniform-Satz/Vollstaendigkeit exakt 10+14
- Nachtraegliche Manifest-Fixes: AQ-Bloecke fuer 4 1-Pass-Filter,
  mix-Parameter fuer feedback_trails (Slot-Overlap vermieden)
- Gesamtsuite 506 gruen, Ruff gruen

plugins/builtin/generators/com.hms.generator.gradient/shaders/gles/gradient.frag

@@ -0,0 +1,50 @@
+#version 100
+// HMS MediaEngine - Generator (GLES, Raspberry Pi)
+// ES 2.0: texture2D, varying, gl_FragColor, Schleifen mit konstanter Höchstgrenze.
+precision mediump float;
+
+uniform sampler2D u_input_texture;
+uniform vec2  u_resolution;
+uniform float u_time_seconds;
+uniform float u_delta_seconds;
+uniform float u_frame_index;
+uniform float u_layer_opacity;
+uniform float u_audio_rms;
+uniform float u_audio_peak;
+uniform float u_audio_bass;
+uniform float u_audio_mid;
+uniform float u_audio_treble;
+uniform float u_audio_beat;
+uniform vec4  param_color_a;
+uniform vec4  param_color_b;
+uniform float param_type;
+uniform float param_angle;
+uniform float param_center_x;
+uniform float param_center_y;
+uniform float param_width;
+uniform float param_phase;
+uniform float param_speed;
+
+
+varying vec2 v_uv;
+
+void main()
+{
+    vec2 p = v_uv - vec2(param_center_x, param_center_y);
+    float ang = radians(param_angle);
+    vec2 dir = vec2(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 = fract(t);
+    vec4 col = mix(param_color_a, param_color_b, clamp(t, 0.0, 1.0));
+    col.a *= u_layer_opacity;
+    gl_FragColor = col;
+}