fix(default): small fixes in default project

feat(default): faster rand in default project
docs: update README
2026-08-30 11:30:37 +02:00 · 2026-08-30 11:30:22 +02:00 · 2026-08-29 12:00:56 +02:00 · 2026-08-29 12:00:50 +02:00 · 2026-08-29 11:29:11 +02:00 · 2026-08-28 20:15:38 +02:00
20 changed files with 437 additions and 631 deletions
@@ -133,7 +133,7 @@ make install

 ```shell
 git clone --recursive https://git.klemek.fr/klemek/forge-steel
-cd forge
+cd forge-steel
 makepkg -si
 ```

@@ -142,11 +142,11 @@ makepkg -si

 ```shell
 git clone --recursive https://git.klemek.fr/klemek/forge-steel
-cd forge
+cd forge-steel
 aclocal
 autoconf
 automake --add-missing
-./configure
+./configure --prefix=$HOME/.local
 make
 make install
 ```
@@ -174,9 +174,7 @@ These are configurable in the [`forge_project.cfg`](#forge_projectcfg).
 ### CLI arguments

 ```txt
-forge steel-dev
-
-usage: forge [-h] [-v] [-p=PROJECT_PATH] [-c=CFG_FILE] [-hr] [-s=SCREEN] [-m=SCREEN] [-mo] [-w] [-t=TEMPO] [-d] [-ar / -nar] [-arc=CYCLES] [-vi=FILE] [-vs=SIZE] [-vb=COUNT] [-vr / -nvr] [-vf=FOURCC] [-is=SIZE] [-ls / -nls] [-ss / -nss] [-mr / -nmr] [-tm] [-tf]
+usage: forge [-h] [-v] [-p=PROJECT_PATH] [-c=CFG_FILE] [-hr] [-s=SCREEN] [-m=SCREEN] [-mo] [-w] [-t=TEMPO] [-d] [-ar / -nar] [-arc=CYCLES] [-is=SIZE] [-ls / -nls] [-ss / -nss] [-mr / -nmr] [-tm] [-tf] [--x11] [--wayland] [--cocoa] [--win32] [-as / -nas] [-oma=MAJOR] [-omi=MINOR]

 Fusion Of Real-time Generative Effects.

@@ -195,21 +193,23 @@ options:
  -ar, --auto-random          randomize state every cycle (4 beats)
  -nar, --no-auto-random      do not randomize state (default)
  -arc, --auto-random-cycle   auto random cycle length (default: 4)
-  -vi, --video-in             path to video capture device (multiple allowed)
-  -vb, --video-buffers        number of video buffers to use (default: 1)
-  -vs, --video-size           video capture desired height (default: internal texture height)
-  -vr, --video-reconnect      auto-reconnect video (default)
-  -nvr, --no-video-reconnect  do not auto-reconnect video
-  -vf, --video-fourcc         video codec fourcc (default: YUYV)
  -is, --internal-size        internal texture height (default: 720)
  -ls, --load-state           load saved state (default)
  -nls, --no-load-state       do not load saved state
  -ss, --save-state           save state (default)
  -nss, --no-save-state       do not save state
+  -as, --auto-save            continuously save state (every ~10ms)
+  -nas, --no-auto-save        do not continuously save state (default)
  -mr, --midi-reconnect       auto-reconnect midi (default)
  -nmr, --no-midi-reconnect   do not auto-reconnect midi
  -tm, --trace-midi           print midi code and values
  -tf, --trace-fps            print fps status of subsystems
+  --x11                       force X11 GLFW backend
+  --wayland                   force Wayland GLFW backend
+  --cocoa                     force Cocoa GLFW backend
+  --win32                     force Win32 GLFW backend
+  -oma, --opengl-major-version      OpenGL major version (default: 4)
+  -omi, --opengl-minor-version      OpenGL minor version (default: 6)
 ```

 ## Default Project
@@ -1,4 +1,4 @@
-#version 460
+#version 140

 // VIDEO 1
 // -----------
@@ -1,4 +1,4 @@
-#version 460
+#version 140

 // MONITOR
 // ---
@@ -25,92 +25,18 @@ float s(vec2 uv, float x0, float y0) {
        step(-y0 - 1, -uv.y);
 }

-const int texts[12][5] = {
-        {
-            0x49,
-            0x4E,
-            0x20,
-            0x41,
-            0x00
-        }, // IN A
-        {
-            0x49,
-            0x4E,
-            0x20,
-            0x42,
-            0x00
-        }, // IN B
-        {
-            0x53,
-            0x52,
-            0x43,
-            0x20,
-            0x41
-        }, // SRC A
-        {
-            0x53,
-            0x52,
-            0x43,
-            0x20,
-            0x42
-        }, // SRC B
-        {
-            0x46,
-            0x58,
-            0x20,
-            0x41,
-            0x00
-        }, // FX A
-        {
-            0x46,
-            0x58,
-            0x20,
-            0x42,
-            0x00
-        }, // FX B
-        {
-            0x41,
-            0x2B,
-            0x42,
-            0x00,
-            0x00
-        }, // A+B
-        {
-            0x4D,
-            0x46,
-            0x58,
-            0x00,
-            0x00
-        }, // MFX
-        {
-            0x46,
-            0x50,
-            0x53,
-            0x00,
-            0x00
-        }, // FPS
-        {
-            0x4F,
-            0x46,
-            0x46,
-            0x00,
-            0x00
-        }, // OFF
-        {
-            0x44,
-            0x45,
-            0x4D,
-            0x4F,
-            0x00
-        }, // DEMO
-        {
-            0x4C,
-            0x49,
-            0x56,
-            0x45,
-            0x00
-        }, // LIVE
-    };
+const int textINA[] = int[5](0x49, 0x4E, 0x20, 0x41, 0x00);
+const int textINB[] = int[5](0x49, 0x4E, 0x20, 0x42, 0x00);
+const int textSRCA[] = int[5](0x49, 0x4E, 0x20, 0x41, 0x00);
+const int textSRCB[] = int[5](0x49, 0x4E, 0x20, 0x42, 0x00);
+const int textFXA[] = int[5](0x46, 0x58, 0x20, 0x41, 0x00);
+const int textFXB[] = int[5](0x46, 0x58, 0x20, 0x42, 0x00);
+const int textAB[] = int[5](0x41, 0x2B, 0x42, 0x00, 0x00);
+const int textMFX[] = int[5](0x4D, 0x46, 0x58, 0x00, 0x00);
+const int textFPS[] = int[5](0x46, 0x50, 0x53, 0x00, 0x00);
+const int textOFF[] = int[5](0x4F, 0x46, 0x46, 0x00, 0x00);
+const int textDEMO[] = int[5](0x44, 0x45, 0x4D, 0x4F, 0x00);
+const int textLIVE[] = int[5](0x4C, 0x49, 0x56, 0x45, 0x00);

 void main() {
    vec2 uv0 = vUV.st;
@@ -146,65 +72,65 @@ void main() {
    float t = 0;

    f += rect(uv3, vec2(-35, 28.5), vec2(2.1, 0.7));
-    t += write_5(uv3, vec2(-37, 28), texts[0]);
+    t += write_5(uv3, vec2(-37, 28), textINA);

    if (iInputFormat1 == YUYV_FOURCC) {
        c += s(uv2, 0, 2) * texture(iTex3, uv2);
        f += rect(uv3, vec2(-35, 26.75), vec2(2.8, 0.7));
        t += write_int(uv3, vec2(-37.6, 26.1), iInputFPS1, 2);
-        t += write_5(uv3, vec2(-35.1, 26.1), texts[8]);
+        t += write_5(uv3, vec2(-35.1, 26.1), textFPS);
    } else {
        f += rect(uv3, vec2(-35, 26.75), vec2(1.6, 0.7));
-        t += write_5(uv3, vec2(-36.5, 26.1), texts[9]);
+        t += write_5(uv3, vec2(-36.5, 26.1), textOFF);
    }

    f += rect(uv3, vec2(-35, -11.5), vec2(2.1, 0.7));
-    t += write_5(uv3, vec2(-37, -12), texts[1]);
+    t += write_5(uv3, vec2(-37, -12), textINB);

    if (iInputFormat2 == YUYV_FOURCC) {
        c += s(uv2, 0, 0) * texture(iTex4, uv2);
        f += rect(uv3, vec2(-35, -13.25), vec2(2.8, 0.7));
        t += write_int(uv3, vec2(-37.6, -13.9), iInputFPS2, 2);
-        t += write_5(uv3, vec2(-35.1, -13.9), texts[8]);
+        t += write_5(uv3, vec2(-35.1, -13.9), textFPS);
    } else {
        f += rect(uv3, vec2(-35, -13.25), vec2(1.6, 0.7));
-        t += write_5(uv3, vec2(-36.5, -13.9), texts[9]);
+        t += write_5(uv3, vec2(-36.5, -13.9), textOFF);
    }

    f += rect(uv3, vec2(-35, 8.5), vec2(2.1, 0.7));

    if (iDemo > 0) {
-        t += write_5(uv3, vec2(-37, 8), texts[10]);
+        t += write_5(uv3, vec2(-37, 8), textDEMO);
    } else {
-        t += write_5(uv3, vec2(-37, 8), texts[11]);
+        t += write_5(uv3, vec2(-37, 8), textLIVE);
    }

    f += rect(uv3, vec2(0, 28.5), vec2(2.6, 0.7));
    f += iActive1 == 1 ? h_rect(uv3, vec2(0, 28.5), vec2(3, 1), 0.2) : 0;
-    t += write_5(uv3, vec2(-2.5, 28), texts[2]);
+    t += write_5(uv3, vec2(-2.5, 28), textSRCA);

    f += rect(uv3, vec2(0, -11.5), vec2(2.6, 0.7));
    f += iActive1 == 2 ? h_rect(uv3, vec2(0, -11.5), vec2(3, 1), 0.2) : 0;
-    t += write_5(uv3, vec2(-2.5, -12), texts[3]);
+    t += write_5(uv3, vec2(-2.5, -12), textSRCB);

    f += rect(uv3, vec2(35, 28.5), vec2(2.1, 0.7));
    f += iActive2 == 1 ? h_rect(uv3, vec2(35, 28.5), vec2(2.5, 1), 0.2) : 0;
-    t += write_5(uv3, vec2(33, 28), texts[4]);
+    t += write_5(uv3, vec2(33, 28), textFXA);

    f += rect(uv3, vec2(35, -11.5), vec2(2.1, 0.7));
    f += iActive2 == 2 ? h_rect(uv3, vec2(35, -11.5), vec2(2.5, 1), 0.2) : 0;
-    t += write_5(uv3, vec2(33, -12), texts[5]);
+    t += write_5(uv3, vec2(33, -12), textFXB);

    f += rect(uv3, vec2(0, 8.5), vec2(1.6, 0.7));
-    t += write_5(uv3, vec2(-1.5, 8), texts[6]);
+    t += write_5(uv3, vec2(-1.5, 8), textAB);

    f += rect(uv3, vec2(35, 8.5), vec2(1.6, 0.7));
    f += iActive2 == 3 ? h_rect(uv3, vec2(35, 8.5), vec2(2, 1), 0.2) : 0;
-    t += write_5(uv3, vec2(33.5, 8), texts[7]);
+    t += write_5(uv3, vec2(33.5, 8), textMFX);

    f += rect(uv3, vec2(35, 6.75), vec2(2.8, 0.7));
    t += write_int(uv3, vec2(32.4, 6.1), iFPS, 2);
-    t += write_5(uv3, vec2(34.9, 6.1), texts[8]);
+    t += write_5(uv3, vec2(34.9, 6.1), textFPS);

    fragColor = mix(c, vec4(min(1, f) - t), min(1, f));
 }
@@ -1,4 +1,4 @@
-#version 460
+#version 140

 // VIDEO 2
 // -----------
@@ -10,8 +10,6 @@ out vec4 fragColor;

 #include inc_src.glsl

-subroutine uniform src_stage_sub src_stage;
-
 uniform int iSeed3;
 uniform vec3 iGroup1_1[6];

@@ -9,8 +9,6 @@ out vec4 fragColor;

 #include inc_src.glsl

-subroutine uniform src_stage_sub src_stage;
-
 uniform int iSeed4;
 uniform vec3 iGroup1_2[6];

@@ -1,4 +1,4 @@
-#version 460
+#version 140

 // A+B
 // ------------
@@ -1,4 +1,4 @@
-#version 460
+#version 140

 // OUT
 // ---
@@ -7,12 +7,17 @@ in vec2 vUV;
 out vec4 fragColor;

 #include inc_map.glsl
+#include inc_cp437.glsl

 uniform sampler2D iTex0;
 uniform vec3 iGroup2_4[7];
 uniform vec3 iGroup2_5[7];
 uniform vec3 iGroup2_6[7];
 uniform vec3 iGroup2_7[7];
+uniform int iFPS;
+uniform int iDemo;
+
+const int[] textDEMO = int[5](0x44, 0x45, 0x4D, 0x4F, 0x00);

 void main() {
    bool visible = (iGroup2_4[4].x + iGroup2_5[4].x + iGroup2_6[4].x + iGroup2_7[4].x) > 0;
@@ -104,6 +109,9 @@ void main() {

    vec4 color = texture(iTex0, invert ? vUV : uv);

+    color = mix(color, 1. - color, iDemo * write_int_left(uv * 20., vec2(1., 1.), iFPS, 3));
+    color = mix(color, 1. - color, iDemo * write_5(uv * 20., vec2(1., 18.), textDEMO));
+
    if (visible) {
        float mask = step(0.0001, length(uv));
        color *= mix(mask, 1 - mask, invert ? 1 : 0);
@@ -364,7 +364,7 @@ float write_int(vec2 uv, vec2 pos, int value, int magnitude)
 {
    value = max(0, value);
    int i;
-    uint m = 1;
+    int m = 1;
    float d = 0.;
    for (i = 0; i < magnitude; i++) {
        if (i == 0 || value >= m) {
@@ -381,6 +381,7 @@ float write_int_left(vec2 uv, vec2 pos, int value, int magnitude)
    int i;
    int m = 1;
    float d = 0.;
+    pos.x -= magnitude;
    for (i = 0; i < magnitude; i++) {
        if (i == 0 || value >= m) {
            pos.x += 1.;
@@ -103,78 +103,13 @@ vec4 debug(vec2 vUV)

    // logic

-    const int texts[10][5] = {
-            {
-                0x46,
-                0x50,
-                0x53,
-                0x00,
-                0x00
-            }, // FPS
-            {
-                0x54,
-                0x45,
-                0x4D,
-                0x50,
-                0x4F
-            }, // TEMPO
-            {
-                0x54,
-                0x49,
-                0x4D,
-                0x45,
-                0x00
-            }, // TIME
-            {
-                0x44,
-                0x45,
-                0x4D,
-                0x4F,
-                0x00
-            }, // DEMO
-            {
-                0x4C,
-                0x49,
-                0x56,
-                0x45,
-                0x00
-            }, // LIVE
-            {
-                0x52,
-                0x41,
-                0x4E,
-                0x44,
-                0x00
-            }, // RAND
-            {
-                0x53,
-                0x52,
-                0x43,
-                0x00,
-                0x00
-            }, // SRC
-            {
-                0x46,
-                0x58,
-                0x00,
-                0x00,
-                0x00
-            }, // FX
-            {
-                0x49,
-                0x4E,
-                0x00,
-                0x00,
-                0x00
-            }, // IN
-            {
-                0x4D,
-                0x46,
-                0x58,
-                0x00,
-                0x00
-            }, // MFX
-        };
+    const int textTEMPO[] = int[5](0x54, 0x45, 0x4D, 0x50, 0x4F);
+    const int textTIME[] = int[5](0x54, 0x49, 0x4D, 0x45, 0x00);
+    const int textRAND[] = int[5](0x52, 0x41, 0x4E, 0x44, 0x00);
+    const int textSRC[] = int[5](0x53, 0x52, 0x43, 0x00, 0x00);
+    const int textFX[] = int[5](0x46, 0x58, 0x00, 0x00, 0x00);
+    const int textIN[] = int[5](0x49, 0x4E, 0x00, 0x00, 0x00);
+    const int textMFX[] = int[5](0x4D, 0x46, 0x58, 0x00, 0x00);

    vec2 uv2 = uv1;

@@ -241,14 +176,14 @@ vec4 debug(vec2 vUV)

    // show src/fx

-    f += write_5(uv3 * .75, vec2(-11.6, -1.8), texts[6]);
-    f += write_5(uv3 * .75, vec2(-4.2, -1.8), texts[7]);
+    f += write_5(uv3 * .75, vec2(-11.6, -1.8), textSRC);
+    f += write_5(uv3 * .75, vec2(-4.2, -1.8), textFX);
    f += char_at(uv3 * .5, vec2(-11.5, 3.5), 0x41);
    f += char_at(uv3 * .5, vec2(-11.5, -6.), 0x42);
    if (iDemo < 1 && (iInputFormat1 == YUYV_FOURCC || iInputFormat2 == YUYV_FOURCC)) {
-        f += write_5(uv3 * .75, vec2(-19.7, -1.8), texts[8]);
+        f += write_5(uv3 * .75, vec2(-19.7, -1.8), textIN);
    }
-    f += write_5(uv3 * .75, vec2(10.9, 2.), texts[9]);
+    f += write_5(uv3 * .75, vec2(10.9, 2.), textMFX);

    // show inputs / feedback
    float line_a_a = rect(uv2, vec2(-7.5, 2.), vec2(1.5, .1));
@@ -287,14 +222,14 @@ vec4 debug(vec2 vUV)

    // show mix
    f += char_at(uv2, vec2(1.55, -.6), mix_type ? 0x4B : 0x4D);
-    f = mix(f, 1 - f, rect(uv2, vec2(.2, -.9 + .9 * mix_value), vec2(.9, .9 * mix_value)));
+    f = mix(f, 1 - f, rect(uv2, vec2(2., -.9 + .9 * mix_value), vec2(.9, .9 * mix_value)));

    // show debug info
    float v = 0.;
    float x = 0.;

    x = -15.;
-    f += write_5(uv3, vec2(x - 4.5, 13.), texts[1]);
+    f += write_5(uv3, vec2(x - 4.5, 13.), textTEMPO);
    f += write_int(uv3, vec2(x + 1.5, 13.), int(iTempo), 3);
    v = fract(iBeats);
    f += h_rect(uv3, vec2(x, 12.), vec2(4., .5), .2);
@@ -302,13 +237,13 @@ vec4 debug(vec2 vUV)

    x = 15.;
    if (iAutoRand > 0) {
-        f += write_5(uv3, vec2(x - 4.5, 13.), texts[5]);
+        f += write_5(uv3, vec2(x - 4.5, 13.), textRAND);
        f += write_int(uv3, vec2(x - .5, 13.), int(iAutoRandCycle), 5);
        v = fract(iBeats / iAutoRandCycle);
    } else {
        f += write_int(uv3, vec2(x - .5, 13.), int(iTime), 5);
        v = fract(iTime);
-        f += write_5(uv3, vec2(x - 4.5, 13.), texts[2]);
+        f += write_5(uv3, vec2(x - 4.5, 13.), textTIME);
    }
    f += h_rect(uv3, vec2(x, 12.), vec2(4., .5), .2);
    f += rect(uv3, vec2(x + 4. * v - 4., 12), vec2(4. * v, .4));
@@ -1,19 +1,20 @@
 #include inc_res.glsl
 #include inc_magic.glsl
 #include inc_functions.glsl
+#include inc_cp437.glsl

 #ifndef INC_FX
 #define INC_FX

 vec4 fx_master(vec3 c0, vec3 c, int seed, vec3 m0) {
-    float fx = magic(m0.xy, vec3(1,0,0), seed);
-    bool invert = magic_trigger(vec3(m0.z, 0, 0), seed);
+    float fx = magic(m0.xy, vec3(1., 0., 0.), seed);
+    bool invert = magic_trigger(vec3(m0.z, 0., 0.), seed);

    vec3 c_out = mix(c0, c, fx);

-    c_out = mix(c_out, 1 - c_out, invert ? 1 : 0);
+    c_out = mix(c_out, 1. - c_out, invert ? 1. : 0.);

-    return vec4(c_out, 1.0);
+    return vec4(c_out, 1.);
 }

 subroutine vec4 fx_stage_sub(vec2 vUV, sampler2D previous, sampler2D feedback, int seed, vec3 b1, vec2 f1, vec3 b2, vec2 f2, vec3 b3, vec2 f3, vec3 m0);
@@ -29,29 +30,29 @@ subroutine(fx_stage_sub) vec4 fx_1(vec2 vUV, sampler2D previous, sampler2D feedb

    // controls

-    float hue = magic(f1, b1, seed + 10);
-    float saturation = magic(f2, b2, seed + 20);
-    float light = magic(f3, b3, seed + 30);
+    float hue = magic(f1, b1, seed + 10.);
+    float saturation = magic(f2, b2, seed + 20.);
+    float light = magic(f3, b3, seed + 30.);

    // logic

    vec3 c0 = texture(previous, uv0).xyz;
    vec3 c = c0;
    c = shift3(c, hue);
-    c *= 1 + saturation;
-    c = mix(c + light * 2.0, c - (1 - light) * 2.0, step(0.5, light));
+    c *= 1. + saturation;
+    c = mix(c + light * 2., c - (1. - light) * 2., step(.5, light));

    return fx_master(c0, c, seed, m0);
 }

 // FX 2 : feedback + shift
-vec4 fx_shift(vec2 vUV, sampler2D src0, sampler2D src1, int seed, vec3 b1, vec2 f1, vec3 b2, vec2 f2, vec3 b3, vec2 f3, vec3 m0)
+subroutine(fx_stage_sub) vec4 fx_shift(vec2 vUV, sampler2D src0, sampler2D src1, int seed, vec3 b1, vec2 f1, vec3 b2, vec2 f2, vec3 b3, vec2 f3, vec3 m0)
 {
    // start

 	vec2 uv0 = vUV.st;
    float ratio = iResolution.x / iResolution.y;
-    vec2 uv1 = (uv0 - .5) * vec2(ratio, 1);
+    vec2 uv1 = (uv0 - .5) * vec2(ratio, 1.);

    // controls

@@ -64,7 +65,7 @@ vec4 fx_shift(vec2 vUV, sampler2D src0, sampler2D src1, int seed, vec3 b1, vec2
    vec3 c0 = texture(src0, uv0).xyz;

    vec2 uv2 = uv1;
-    uv2 = mix(uv2 * (1 + zoom * 2), uv2 * (zoom), step(0.5, zoom));
+    uv2 = mix(uv2 * (1 + zoom * 2), uv2 * (zoom), step(.5, zoom));
    uv2 += vec2(x_shift * ratio, y_shift) * 2;
    vec3 c = reframe(src1, uv2).xyz;

@@ -115,28 +116,28 @@ subroutine(fx_stage_sub) vec4 fx_5(vec2 vUV, sampler2D previous, sampler2D feedb

 	vec2 uv0 = vUV.st;
    float ratio = iResolution.x / iResolution.y;
-    vec2 uv1 = (uv0 - .5) * vec2(ratio, 1);
+    vec2 uv1 = (uv0 - .5) * vec2(ratio, 1.);

    // controls

-    float pixel_size = magic(f1, b1, seed + 10);
-    float quantize = magic(f2, b2, seed + 20);
-    bool quantize_trigger = magic_trigger(b2, seed + 20);
-    float blur = magic(f3, b3, seed + 30);
+    float pixel_size = magic(f1, b1, seed + 10.);
+    float quantize = magic(f2, b2, seed + 20.);
+    bool quantize_trigger = magic_trigger(b2, seed + 20.);
+    float blur = magic(f3, b3, seed + 30.);

    // logic

    vec3 c0 = texture(previous, uv0).xyz;

    vec2 uv2 = uv1;
-    float pixel = (1 - pixel_size) * 250 + 25;
+    float pixel = (1., - pixel_size) * 250. + 25.;
    uv2 = round(uv2 * pixel) / pixel;
-    vec3 c = gauss(previous, uv2 * vec2(1 / ratio, 1)  + .5, 3, 0.005 * blur).xyz;
-    float colors = (1 - quantize) * 10 + 1;
+    vec3 c = gauss(previous, uv2 * vec2(1. / ratio, 1.)  + .5, 3, .005 * blur).xyz;
+    float colors = (1. - quantize) * 10. + 1.;
    if (quantize_trigger) {
        c = round(c * colors) / colors;
    }
-    // c = mix(c, 1 - c, step(noise_f(uv0 * 10 + vec2(iTime * 0.1, 0), 5), 0.5));
+    // c = mix(c, 1 - c, step(noise_f(uv0 * 10 + vec2(iTime * .1, 0), 5), .5));

    return fx_master(c0, c, seed, m0);
 }
@@ -148,7 +149,7 @@ subroutine(fx_stage_sub) vec4 fx_6(vec2 vUV, sampler2D previous, sampler2D feedb

 	vec2 uv0 = vUV.st;
    float ratio = iResolution.x / iResolution.y;
-    vec2 uv1 = (uv0 - .5) * vec2(ratio, 1);
+    vec2 uv1 = (uv0 - .5) * vec2(ratio, 1.);

    // controls

@@ -168,7 +169,7 @@ subroutine(fx_stage_sub) vec4 fx_6(vec2 vUV, sampler2D previous, sampler2D feedb
    if (pixel_size_trigger) {
        uv2 = floor(uv2 * k1) / k1;
    }
-    vec3 c = gauss(previous, uv2 * vec2(1 / ratio, 1)  + .5, 3, 0.005 * blur).xyz;
+    vec3 c = gauss(previous, uv2 * vec2(1 / ratio, 1)  + .5, 3, .005 * blur).xyz;
    float k3 = pow(2, 5 - floor(quantize * 5));
    if (quantize_trigger) {
        c *= k3;
@@ -190,26 +191,26 @@ subroutine(fx_stage_sub) vec4 fx_7(vec2 vUV, sampler2D previous, sampler2D feedb

 	vec2 uv0 = vUV.st;
    float ratio = iResolution.x / iResolution.y;
-    vec2 uv1 = (uv0 - .5) * vec2(ratio, 1);
+    vec2 uv1 = (uv0 - .5) * vec2(ratio, 1.);

    // controls

-    float lens_v = magic(f1, b1, seed + 10);
-    float horizontal_noise = magic(f2, b2, seed + 20);
-    float zoom = magic(f3, b3, seed + 30);
+    float lens_v = magic(f1, b1, seed + 10.);
+    float horizontal_noise = magic(f2, b2, seed + 20.);
+    float zoom = magic(f3, b3, seed + 30.);

    // logic

    vec3 c0 = texture(previous, uv0).xyz;

    vec2 uv2 = uv1;
-    float k1 = lens_v * 0.5;
-    uv2 *= 1 + zoom * 2;
+    float k1 = lens_v * .5;
+    uv2 *= 1. + zoom * 2.;
    uv2 = lens(uv2, -k1, k1);
    float k = horizontal_noise;
    vec3 c = vec3(
-        reframe_b(previous, uv2 + vec2((rand(uv0.y * 1000 + iTime) - 0.5) * k * 0.1)).x,
-        reframe_b(previous, uv2 + vec2((rand(uv0.y * 1100 + iTime) - 0.5) * k * 0.1)).y,
+        reframe_b(previous, uv2 + vec2((rand(uv0.y * 1000. + iTime) - .5) * k * .1)).x,
+        reframe_b(previous, uv2 + vec2((rand(uv0.y * 1100. + iTime) - .5) * k * .1)).y,
        reframe_b(previous, uv2).z
    );

@@ -223,30 +224,28 @@ subroutine(fx_stage_sub) vec4 fx_8(vec2 vUV, sampler2D previous, sampler2D feedb

 	vec2 uv0 = vUV.st;
    float ratio = iResolution.x / iResolution.y;
-    vec2 uv1 = (uv0 - .5) * vec2(ratio, 1);
+    vec2 uv1 = (uv0 - .5) * vec2(ratio, 1.);

    // controls

-    float axes = magic(f1, b1, seed + 10);
-    float axes_trigger = magic_b(b1, seed + 10).x;
-    float rotation = magic(f2, b2, seed + 20);
-    float h_scroll = magic(f3, b3, seed + 30);
+    float axes = magic(f1, b1, seed + 10.);
+    float axes_trigger = magic_b(b1, seed + 10.).x;
+    float rotation = magic(f2, b2, seed + 20.);
+    float h_scroll = magic(f3, b3, seed + 30.);

    // logic

    vec3 c0 = texture(previous, uv0).xyz;

    vec2 uv2 = uv1;
-    uv2 = mix(uv2, kal2(uv2 * rot(0.25), floor(axes * 9 + 1)) * vec2(1, -2) + vec2(0, -0.5), axes_trigger);
+    uv2 = mix(uv2, kal2(uv2 * rot(.25), floor(axes * 9. + 1.)) * vec2(1., -2.) + vec2(0., -.5), axes_trigger);
    uv2 *= rot(rotation);
-    uv2.x = (saw(uv2.x / ratio + 0.5 + h_scroll * 2) - 0.5) * ratio;
+    uv2.x = (saw(uv2.x / ratio + .5 + h_scroll * 2.) - .5) * ratio;
    vec3 c = reframe(previous, uv2).xyz;

    return fx_master(c0, c, seed, m0);
 }

-#include inc_cp437.glsl
-
 // FX 9 : cp437
 subroutine(fx_stage_sub) vec4 fx_9(vec2 vUV, sampler2D previous, sampler2D feedback, int seed, vec3 b1, vec2 f1, vec3 b2, vec2 f2, vec3 b3, vec2 f3, vec3 m0)
 {
@@ -254,35 +253,35 @@ subroutine(fx_stage_sub) vec4 fx_9(vec2 vUV, sampler2D previous, sampler2D feedb

 	vec2 uv0 = vUV.st;
    float ratio = iResolution.x / iResolution.y;
-    vec2 uv1 = (uv0 - .5) * vec2(ratio, 1);
+    vec2 uv1 = (uv0 - .5) * vec2(ratio, 1.);

    // controls

-    float zoom = magic(f1, b1, seed + 10);
-    vec2 charset = magic_f(f2, b2, seed + 20);
-    vec3 charset_ctrl = magic_b(b2, seed + 20);
-    float char_delta = magic(f3, b3, seed + 30);
-    float t = magic(seed + 40);
+    float zoom = magic(f1, b1, seed + 10.);
+    vec2 charset = magic_f(f2, b2, seed + 20.);
+    vec3 charset_ctrl = magic_b(b2, seed + 20.);
+    float char_delta = magic(f3, b3, seed + 30.);
+    float t = magic(seed + 40.);

    // logic

    vec3 c0 = texture(previous, uv0).xyz;

    vec2 uv2 = uv1;
-    float k1 = 100 * (1 - zoom) + 10;
-    float inv_k = 1 / k1;
+    float k1 = 100. * (1. - zoom) + 10.;
+    float inv_k = 1. / k1;
    uv2 = floor(uv2 * k1) * inv_k;
-    int start_char = charset_ctrl.x > 0 ? charsets[int(charset.x * CHARSETS) * 2] : 0x01;
-    int char_span = int((charset_ctrl.x > 0 ? charsets[int(charset.x * CHARSETS) * 2 + 1] : 255));
-    char_span = int(char_span * max(1 - charset.y, 1 / (char_span * 0.75)));
+    int start_char = charset_ctrl.x > 0. ? charsets[int(charset.x * CHARSETS) * 2] : 0x01;
+    int char_span = int((charset_ctrl.x > 0. ? charsets[int(charset.x * CHARSETS) * 2 + 1] : 255));
+    char_span = int(char_span * max(1. - charset.y, 1. / (char_span * .75)));
    ivec2 uv2i = ivec2(uv2 * k1);
-    int code = ((charset_ctrl.y < 1 || (uv2i.x % 2 ^ uv2i.y % 2) > 0) ? 1 : 0) * (start_char + int((rand(uv2i) + char_delta) * char_span) % char_span);
-    vec3 c = reframe(previous, uv2 + vec2(0, 0) * inv_k * 0.125).xyz * 0.2
-        + reframe(previous, uv2 + vec2(1, 0) * inv_k * 0.125).xyz * 0.2
-        + reframe(previous, uv2 + vec2(1, 1) * inv_k * 0.125).xyz * 0.2
-        + reframe(previous, uv2 + vec2(0, 1) * inv_k * 0.125).xyz * 0.2
-        + reframe(previous, uv2 + vec2(0.5, 0.5) * inv_k * 0.125).xyz * 0.2;
-    c = char(mod(uv1 * k1, 1), code) ? c : vec3(0);
+    int code = ((charset_ctrl.y < 1. || (uv2i.x % 2 ^ uv2i.y % 2) > 0) ? 1 : 0) * (start_char + int((rand(uv2i) + char_delta) * char_span) % char_span);
+    vec3 c = reframe(previous, uv2 + vec2(0., 0.) * inv_k * .125).xyz * .2
+        + reframe(previous, uv2 + vec2(1., 0.) * inv_k * .125).xyz * .2
+        + reframe(previous, uv2 + vec2(1., 1.) * inv_k * .125).xyz * .2
+        + reframe(previous, uv2 + vec2(0., 1.) * inv_k * .125).xyz * .2
+        + reframe(previous, uv2 + vec2(.5, .5) * inv_k * .125).xyz * .2;
+    c = char(mod(uv1 * k1, 1.), code) ? c : vec3(0.);

    return fx_master(c0, c, seed, m0);
 }
@@ -294,22 +293,22 @@ subroutine(fx_stage_sub) vec4 fx_10(vec2 vUV, sampler2D previous, sampler2D feed

 	vec2 uv0 = vUV.st;
    float ratio = iResolution.x / iResolution.y;
-    vec2 uv1 = (uv0 - .5) * vec2(ratio, 1);
+    vec2 uv1 = (uv0 - .5) * vec2(ratio, 1.);

    // controls

-    float lens_v1 = magic(f1, b1, seed + 10);
-    float lens_v2 = magic(f2, b2, seed + 20);
-    float zoom = magic(f3, b3, seed + 30);
-    float k = magic(seed + 40);
+    float lens_v1 = magic(f1, b1, seed + 10.);
+    float lens_v2 = magic(f2, b2, seed + 20.);
+    float zoom = magic(f3, b3, seed + 30.);
+    float k = magic(seed + 40.);

    // logic

    vec3 c0 = texture(previous, uv0).xyz;

    vec2 uv2 = uv1;
-    uv2 *= 1 + zoom * 2;
-    uv2 = lens(uv2, -lens_v2 * 10, lens_v1 * 10);
+    uv2 *= 1. + zoom * 2.;
+    uv2 = lens(uv2, -lens_v2 * 10., lens_v1 * 10.);
    vec3 c = reframe(previous, uv2).xyz;

    return fx_master(c0, c, seed, m0);
@@ -322,13 +321,13 @@ subroutine(fx_stage_sub) vec4 fx_11(vec2 vUV, sampler2D previous, sampler2D feed

 	vec2 uv0 = vUV.st;
    float ratio = iResolution.x / iResolution.y;
-    vec2 uv1 = (uv0 - .5) * vec2(ratio, 1);
+    vec2 uv1 = (uv0 - .5) * vec2(ratio, 1.);

    // controls

-    float wall1 = magic(f1, b1, seed + 10);
-    float wall2 = magic(f2, b2, seed + 20);
-    float angle = magic(f3, b3, seed + 30);
+    float wall1 = magic(f1, b1, seed + 10.);
+    float wall2 = magic(f2, b2, seed + 20.);
+    float angle = magic(f3, b3, seed + 30.);

    // logic

@@ -336,8 +335,8 @@ subroutine(fx_stage_sub) vec4 fx_11(vec2 vUV, sampler2D previous, sampler2D feed

    vec2 uv2 = uv1;
    uv2 *= rot(angle);
-    uv2.y = min(uv2.y, 1 - wall1);
-    uv2.y = -min(-uv2.y, 1 - wall2);
+    uv2.y = min(uv2.y, 1. - wall1);
+    uv2.y = -min(-uv2.y, 1. - wall2);
    uv2 *= rot(-angle);
    vec3 c = reframe(previous, uv2).xyz;

@@ -351,33 +350,33 @@ subroutine(fx_stage_sub) vec4 fx_12(vec2 vUV, sampler2D previous, sampler2D feed

 	vec2 uv0 = vUV.st;
    float ratio = iResolution.x / iResolution.y;
-    vec2 uv1 = (uv0 - 0.5) * vec2(ratio, 1);
+    vec2 uv1 = (uv0 - .5) * vec2(ratio, 1.);

    // controls

-    float pixel_size = magic(f1, b1, seed + 10);
-    bool pixel_size_trigger = magic_trigger(b1, seed + 10);
-    f2 = magic_f(f2, b2, seed + 20);
-    int rule = int(f2.x * 12);
-    float threshold = f2.y * 0.9 + 0.05;
-    float fb = magic(f3, b3, seed + 30);
+    float pixel_size = magic(f1, b1, seed + 10.);
+    bool pixel_size_trigger = magic_trigger(b1, seed + 10.);
+    f2 = magic_f(f2, b2, seed + 20.);
+    int rule = int(f2.x * 12.);
+    float threshold = f2.y * .9 + .05;
+    float fb = magic(f3, b3, seed + 30.);

    // logic

    vec3 c0 = texture(previous, uv0).xyz;

    vec2 uv2 = uv1;
-    float k1 = pow(2, 9 - floor(pixel_size * 5));
-    float p = 1 / k1;
+    float k1 = pow(2., 9. - floor(pixel_size * 5.));
+    float p = 1. / k1;
    uv2 = round(uv2 * k1) / k1;
    vec3 c1 = mix(
-        reframe(previous, uv2 + vec2(0.5, 0.5) * p).xyz,
-        reframe(feedback, uv2 + vec2(0.5, 0.5) * p).xyz,
+        reframe(previous, uv2 + vec2(.5, .5) * p).xyz,
+        reframe(feedback, uv2 + vec2(.5, .5) * p).xyz,
        fb
    );
    vec3 c2 = mix(
-        reframe(previous, uv2 + vec2(1.5, 0.5) * p).xyz,
-        reframe(feedback, uv2 + vec2(1.5, 0.5) * p).xyz,
+        reframe(previous, uv2 + vec2(1.5, .5) * p).xyz,
+        reframe(feedback, uv2 + vec2(1.5, .5) * p).xyz,
        fb
    );
    vec3 c3 = mix(
@@ -386,33 +385,33 @@ subroutine(fx_stage_sub) vec4 fx_12(vec2 vUV, sampler2D previous, sampler2D feed
        fb
    );
    vec3 c4 = mix(
-        reframe(previous, uv2 + vec2(0.5, 1.5) * p).xyz,
-        reframe(feedback, uv2 + vec2(0.5, 1.5) * p).xyz,
+        reframe(previous, uv2 + vec2(.5, 1.5) * p).xyz,
+        reframe(feedback, uv2 + vec2(.5, 1.5) * p).xyz,
        fb
    );
    vec3 c5 = mix(
-        reframe(previous, uv2 + vec2(-0.5, 1.5) * p).xyz,
-        reframe(feedback, uv2 + vec2(-0.5, 1.5) * p).xyz,
+        reframe(previous, uv2 + vec2(-.5, 1.5) * p).xyz,
+        reframe(feedback, uv2 + vec2(-.5, 1.5) * p).xyz,
        fb
    );
    vec3 c6 = mix(
-        reframe(previous, uv2 + vec2(-0.5, 0.5) * p).xyz,
-        reframe(feedback, uv2 + vec2(-0.5, 0.5) * p).xyz,
+        reframe(previous, uv2 + vec2(-.5, .5) * p).xyz,
+        reframe(feedback, uv2 + vec2(-.5, .5) * p).xyz,
        fb
    );
    vec3 c7 = mix(
-        reframe(previous, uv2 + vec2(-0.5, -0.5) * p).xyz,
-        reframe(feedback, uv2 + vec2(-0.5, -0.5) * p).xyz,
+        reframe(previous, uv2 + vec2(-.5, -.5) * p).xyz,
+        reframe(feedback, uv2 + vec2(-.5, -.5) * p).xyz,
        fb
    );
    vec3 c8 = mix(
-        reframe(previous, uv2 + vec2(0.5, -0.5) * p).xyz,
-        reframe(feedback, uv2 + vec2(0.5, -0.5) * p).xyz,
+        reframe(previous, uv2 + vec2(.5, -.5) * p).xyz,
+        reframe(feedback, uv2 + vec2(.5, -.5) * p).xyz,
        fb
    );
    vec3 c9 = mix(
-        reframe(previous, uv2 + vec2(-0.5, -0.5) * p).xyz,
-        reframe(feedback, uv2 + vec2(-0.5, -0.5) * p).xyz,
+        reframe(previous, uv2 + vec2(-.5, -.5) * p).xyz,
+        reframe(feedback, uv2 + vec2(-.5, -.5) * p).xyz,
        fb
    );
    bool alive = mean(c1) >= threshold;
@@ -453,7 +452,7 @@ subroutine(fx_stage_sub) vec4 fx_12(vec2 vUV, sampler2D previous, sampler2D feed
        alive = n >= 6 || !alive && n == 4 || alive && (n == 3 || n == 5);
    }

-    vec3 cout = vec3(alive ? 1 : 0);
+    vec3 cout = vec3(alive ? 1. : 0.);

    return fx_master(c0, cout, seed, m0);
 }
@@ -465,20 +464,20 @@ subroutine(fx_stage_sub) vec4 fx_13(vec2 vUV, sampler2D previous, sampler2D feed

 	vec2 uv0 = vUV.st;
    float ratio = iResolution.x / iResolution.y;
-    vec2 uv1 = (uv0 - .5) * vec2(ratio, 1);
+    vec2 uv1 = (uv0 - .5) * vec2(ratio, 1.);

    // controls

-    float sx = magic(f1, b1, seed + 10) * 2;
-    float sy = magic(f2, b2, seed + 20) * 2;
-    float disp = 0.005 * magic(f3, b3, seed + 30);
+    float sx = magic(f1, b1, seed + 10.) * 2.;
+    float sy = magic(f2, b2, seed + 20.) * 2.;
+    float disp = .005 * magic(f3, b3, seed + 30.);

    // logic

    vec3 c0 = texture(previous, uv0).xyz;

-    const mat3x3 sobelx = {{-1, -2, -1}, {0, 0, 0}, {1, 2, 1}};
-    const mat3x3 sobely = {{-1, 0, 1}, {-2, 0, 2}, {-1, 0, 1}};
+    const mat3x3 sobelx = mat3x3(-1., -2., -1., 0., 0., 0., 1., 2., 1.);
+    const mat3x3 sobely = mat3x3(-1., 0., 1., -2., 0., 2., -1., 0., 1.);

    mat3x3 sobel = sobelx * sx + sobely * sy;

@@ -494,13 +493,13 @@ subroutine(fx_stage_sub) vec4 fx_14(vec2 vUV, sampler2D previous, sampler2D feed

 	vec2 uv0 = vUV.st;
    float ratio = iResolution.x / iResolution.y;
-    vec2 uv1 = (uv0 - .5) * vec2(ratio, 1);
+    vec2 uv1 = (uv0 - .5) * vec2(ratio, 1.);

    // controls

-    float zoom = 1 + magic(f1, b1, seed + 10) * 9;
-    float h_scroll = magic(f2, b2, seed + 20);
-    float angle = magic(f3, b3, seed + 30);
+    float zoom = 1 + magic(f1, b1, seed + 10.) * 9.;
+    float h_scroll = magic(f2, b2, seed + 20.);
+    float angle = magic(f3, b3, seed + 30.);

    // logic

@@ -512,11 +511,11 @@ subroutine(fx_stage_sub) vec4 fx_14(vec2 vUV, sampler2D previous, sampler2D feed

    uv3 *= rot(angle);

-    uv3 += vec2(h_scroll, 0);
+    uv3 += vec2(h_scroll, 0.);

    uv3 *= round(zoom);

-    vec2 umax = vec2(round(zoom), 300);
+    vec2 umax = vec2(round(zoom), 300.);

    vec3 c = reframe(previous, mod(uv3, umax)).xyz;

@@ -526,33 +525,33 @@ subroutine(fx_stage_sub) vec4 fx_14(vec2 vUV, sampler2D previous, sampler2D feed
 // FX 15 : Random
 subroutine(fx_stage_sub) vec4 fx_15(vec2 vUV, sampler2D previous, sampler2D feedback, int seed, vec3 b1, vec2 f1, vec3 b2, vec2 f2, vec3 b3, vec2 f3, vec3 m0)
 {
-	int fx = int(randTime(seed + 100) * 14);
+	int fx = int(randTime(seed + 100.) * 14.) + 1;

-    if (fx == 0) {
+    if (fx == 1) {
        return fx_1(vUV, previous, feedback, seed, b1, f1, b2, f2, b3, f3, m0);
-    } else if (fx == 1) {
-        return fx_2(vUV, previous, feedback, seed, b1, f1, b2, f2, b3, f3, m0);
    } else if (fx == 2) {
-        return fx_3(vUV, previous, feedback, seed, b1, f1, b2, f2, b3, f3, m0);
+        return fx_2(vUV, previous, feedback, seed, b1, f1, b2, f2, b3, f3, m0);
    } else if (fx == 3) {
-        return fx_4(vUV, previous, feedback, seed, b1, f1, b2, f2, b3, f3, m0);
+        return fx_3(vUV, previous, feedback, seed, b1, f1, b2, f2, b3, f3, m0);
    } else if (fx == 4) {
-        return fx_5(vUV, previous, feedback, seed, b1, f1, b2, f2, b3, f3, m0);
+        return fx_4(vUV, previous, feedback, seed, b1, f1, b2, f2, b3, f3, m0);
    } else if (fx == 5) {
-        return fx_6(vUV, previous, feedback, seed, b1, f1, b2, f2, b3, f3, m0);
+        return fx_5(vUV, previous, feedback, seed, b1, f1, b2, f2, b3, f3, m0);
    } else if (fx == 6) {
-        return fx_7(vUV, previous, feedback, seed, b1, f1, b2, f2, b3, f3, m0);
+        return fx_6(vUV, previous, feedback, seed, b1, f1, b2, f2, b3, f3, m0);
    } else if (fx == 7) {
-        return fx_8(vUV, previous, feedback, seed, b1, f1, b2, f2, b3, f3, m0);
+        return fx_7(vUV, previous, feedback, seed, b1, f1, b2, f2, b3, f3, m0);
    } else if (fx == 8) {
-        return fx_9(vUV, previous, feedback, seed, b1, f1, b2, f2, b3, f3, m0);
+        return fx_8(vUV, previous, feedback, seed, b1, f1, b2, f2, b3, f3, m0);
    } else if (fx == 9) {
-        return fx_10(vUV, previous, feedback, seed, b1, f1, b2, f2, b3, f3, m0);
+        return fx_9(vUV, previous, feedback, seed, b1, f1, b2, f2, b3, f3, m0);
    } else if (fx == 10) {
-        return fx_11(vUV, previous, feedback, seed, b1, f1, b2, f2, b3, f3, m0);
+        return fx_10(vUV, previous, feedback, seed, b1, f1, b2, f2, b3, f3, m0);
    } else if (fx == 11) {
-        return fx_12(vUV, previous, feedback, seed, b1, f1, b2, f2, b3, f3, m0);
+        return fx_11(vUV, previous, feedback, seed, b1, f1, b2, f2, b3, f3, m0);
    } else if (fx == 12) {
+        return fx_12(vUV, previous, feedback, seed, b1, f1, b2, f2, b3, f3, m0);
+    } else if (fx == 13) {
        return fx_13(vUV, previous, feedback, seed, b1, f1, b2, f2, b3, f3, m0);
    } else {
        return fx_14(vUV, previous, feedback, seed, b1, f1, b2, f2, b3, f3, m0);
@@ -1,14 +1,20 @@
 #ifndef INC_RAND
 #define INC_RAND

+// https://thebookofshaders.com/10/
+// https://byteblacksmith.com/improvements-to-the-canonical-one-liner-glsl-rand-for-opengl-es-2-0/
+
 float rand(float seed){
-    float v = pow(abs(seed), .8571429); // 6. / 7.
-    v *= sin(v) + 1.;
-    return fract(v);
+    const float c =  43758.5453;
+    return fract(sin(seed) * c);
 }

-float rand(vec2 n){
-    return rand(n.x * 1234. + n.y * 9876.);
+float rand(vec2 co)
+{
+    const float a = 12.9898;
+    const float b = 78.233;
+    float dt= dot(co.xy ,vec2(a,b));
+    return rand(dt);
 }

 #endif
@@ -1,6 +1,7 @@
 #include inc_res.glsl
 #include inc_magic.glsl
 #include inc_functions.glsl
+#include inc_cp437.glsl

 #ifndef INC_SRC
 #define INC_SRC
@@ -13,6 +14,8 @@ uniform sampler2D iTex4;

 subroutine vec4 src_stage_sub(vec2 vUV, int seed, vec3 b1, vec2 f1, vec3 b2, vec2 f2, vec3 b3, vec2 f3);

+subroutine uniform src_stage_sub src_stage;
+
 vec4 src_thru(vec2 vUV, sampler2D tex, int seed, vec3 b1, vec2 f1, vec3 b2, vec2 f2, vec3 b3, vec2 f3)
 {
    // start
@@ -21,9 +24,9 @@ vec4 src_thru(vec2 vUV, sampler2D tex, int seed, vec3 b1, vec2 f1, vec3 b2, vec2

    // controls

-    float hue = magic(f1, b1, seed + 10);
-    float saturation = magic(f2, b2, seed + 20);
-    float light = magic(f3, b3, seed + 30);
+    float hue = magic(f1, b1, seed + 10.);
+    float saturation = magic(f2, b2, seed + 20.);
+    float light = magic(f3, b3, seed + 30.);

    // logic

@@ -31,8 +34,8 @@ vec4 src_thru(vec2 vUV, sampler2D tex, int seed, vec3 b1, vec2 f1, vec3 b2, vec2

    c = shift3(c, hue);

-    c *= 1 + saturation;
-    c = mix(c + light * 2.0, c - (1 - light) * 2.0, step(0.5, light));
+    c *= 1. + saturation;
+    c = mix(c + light * 2., c - (1. - light) * 2., step(.5, light));

    // output

@@ -52,22 +55,22 @@ subroutine ( src_stage_sub ) vec4 src_2(vec2 vUV, int seed, vec3 b1, vec2 f1, ve

    vec2 uv0 = vUV.st;
    float ratio = iResolution.x / iResolution.y;
-    vec2 uv1 = (uv0 - .5) * vec2(ratio, 1);
+    vec2 uv1 = (uv0 - .5) * vec2(ratio, 1.);

    // controls

-    float thickness = magic(f1, b1, seed + 10);
-    float rotation = magic(f2, b2, seed + 20);
-    float distort = magic(f3, b3, seed + 30);
+    float thickness = magic(f1, b1, seed + 10.);
+    float rotation = magic(f2, b2, seed + 20.);
+    float distort = magic(f3, b3, seed + 30.);

    // logic

    vec2 uv2 = uv1;
-    uv2.y *= cos(uv2.x * 5 * distort);
-    uv2 *= rot(rotation + iBeats / 16);
-    float k = thickness * 2;
-    uv2.y = cmod(uv2.y, k * 2 + 0.1);
-    float f = istep(k * 0.125 + 0.05, uv2.y) * istep(k * 0.125 + 0.01, -uv2.y);
+    uv2.y *= cos(uv2.x * 5. * distort);
+    uv2 *= rot(rotation + iBeats * .0625);
+    float k = thickness * 2.;
+    uv2.y = cmod(uv2.y, k * 2. + .1);
+    float f = istep(k * .125 + .05, uv2.y) * istep(k * .125 + .01, -uv2.y);

    return vec4(f);
 }
@@ -79,159 +82,28 @@ subroutine ( src_stage_sub ) vec4 src_3(vec2 vUV, int seed, vec3 b1, vec2 f1, ve

    vec2 uv0 = vUV.st;
    float ratio = iResolution.x / iResolution.y;
-    vec2 uv1 = (uv0 - .5) * vec2(ratio, 1);
+    vec2 uv1 = (uv0 - .5) * vec2(ratio, 1.);

    // controls

-    float zoom = magic(f1, b1, seed + 10);
-    float rotation = magic(f2, b2, seed + 20);
-    float lens_v = magic(f3, b3, seed + 30);
+    float zoom = magic(f1, b1, seed + 10.);
+    float rotation = magic(f2, b2, seed + 20.);
+    float lens_v = magic(f3, b3, seed + 30.);

    // logic

    vec2 uv2 = uv1;
-    float k1 = lens_v * 5;
+    float k1 = lens_v * 5.;
    uv2 = lens(uv2, -k1, k1);
-    uv2 = kal(uv2, 5);
-    uv2 *= rot(rotation + iBeats / 16);
-    float k = zoom * 0.1 + 0.05;
-    uv2 = cmod(uv2, k * 2);
-    float f = istep(k / (1 + length(uv1) * 2), length(uv2));
+    uv2 = kal(uv2, 5.);
+    uv2 *= rot(rotation + iBeats * .0625);
+    float k = zoom * .1 + .05;
+    uv2 = cmod(uv2, k * 2.);
+    float f = istep(k / (1. + length(uv1) * 2.), length(uv2));

    return vec4(f);
 }

-// // SRC 4 : circuit
-// subroutine ( src_stage_sub ) vec4 src_4(vec2 vUV, int seed, vec3 b1, vec2 f1, vec3 b2, vec2 f2, vec3 b3, vec2 f3)
-// {
-//     // start
-
-//     vec2 uv0 = vUV.st;
-//     float ratio = iResolution.x / iResolution.y;
-//     vec2 uv1 = (uv0 - .5) * vec2(ratio, 1);
-
-//     // controls
-
-//     float z = 10 + magic(f1, b1, 123) * 20;
-//     float h = magic(f2, b2, seed + 20) * 0.8 + 0.1;
-//     float v = magic_reverse(f3, b3, seed + 30) * 0.8 + 0.1;
-
-//     // logic
-
-//     uv1 *= z;
-//     uv1 += iBeats;
-
-//     float s0 = rand(floor(mod(uv1, 1000))) * 1000;
-//     float s1 = rand(floor(mod(uv1 + vec2(0, 1), 1000))) * 1000;
-//     float s2 = rand(floor(mod(uv1 - vec2(1, 0), 1000))) * 1000;
-
-//     bool up = rand(s1 + 1) < h;
-//     bool left = rand(s2 + 2) < v;
-//     bool down = rand(s0 + 1) < h;
-//     bool right = rand(s0 + 2) < v;
-//     bool up_down = up && down;
-//     bool left_right = left && right;
-
-//     uv1 = mod(uv1, 1.0) - 0.5;
-
-//     const float t = 0.1;
-
-//     float f = 0;
-//     int c = 0;
-
-//     if (up) {
-//         f += stripe(uv1.x, -t * 0.5, t * 0.5) * step(-t * 0.5, uv1.y);
-//         c += 1;
-//     }
-
-//     if (down) {
-//         f += stripe(uv1.x, -t * 0.5, t * 0.5) * istep(t * 0.5, uv1.y);
-//         c += 1;
-//     }
-
-//     if (left) {
-//         f += stripe(uv1.y, -t * 0.5, t * 0.5) * istep(t * 0.5, uv1.x);
-//         c += 1;
-//     }
-
-//     if (right) {
-//         f += stripe(uv1.y, -t * 0.5, t * 0.5) * step(-t * 0.5, uv1.x);
-//         c += 1;
-//     }
-
-//     if (c == 1) {
-//         f += istep(t, length(uv1));
-//     }
-
-//     f = min(f, 1);
-
-//     if ((up_down ^^ left_right) && c == 2) {
-//         if (up_down) {
-//             uv1.xy = uv1.yx;
-//         }
-//         if (rand(s0 + 3) < 0.5) {
-//             uv1.x = -uv1.x;
-//         }
-//         float k = rand(s0 + 4) * 60;
-//         f -= rect(uv1, vec2(0), vec2(t * 3, t));
-//         f = max(0, f);
-//         if (k < 10) { // resistor
-//             f += line(uv1, vec2(-t * 3.25, -t * 0.5), vec2(-t * 2.5, t * 2), t * 0.75);
-//             f += line(uv1, vec2(-t * 2.5, t * 2), vec2(-t * 1.5, -t * 2), t * 0.75);
-//             f += line(uv1, vec2(-t * 1.5, -t * 2), vec2(-t * 0.5, t * 2), t * 0.75);
-//             f += line(uv1, vec2(-t * 0.5, t * 2), vec2(t * 0.5, -t * 2), t * 0.75);
-//             f += line(uv1, vec2(t * 0.5, -t * 2), vec2(t * 1.5, t * 2), t * 0.75);
-//             f += line(uv1, vec2(t * 1.5, t * 2), vec2(t * 2.5, -t * 2), t * 0.75);
-//             f += line(uv1, vec2(t * 2.5, -t * 2), vec2(t * 3.25, t * 0.5), t * 0.75);
-//         } else if (k < 20) { // capacitor
-//             f += rect(uv1, vec2(-t * 2, 0), vec2(t, t * 0.5));
-//             f += rect(uv1, vec2(t * 2, 0), vec2(t, t * 0.5));
-//             f += rect(uv1, vec2(t, 0), vec2(t * 0.5, t * 3.5));
-//             f += rect(uv1, vec2(-t, 0), vec2(t * 0.5, t * 3.5));
-//         } else if (k < 30) { // diode
-//             f += line(uv1, vec2(-t * 2, t * 2.5), vec2(t * 2, 0), t);
-//             f += line(uv1, vec2(-t * 2, -t * 2.5), vec2(t * 2, 0), t);
-//             f += rect(uv1, vec2(t * 2.5, 0), vec2(t * 0.5, t * 3));
-//             f += rect(uv1, vec2(-t * 2.5, 0), vec2(t * 0.5, t * 3));
-//         } else if (k < 40) { // lamp
-//             f += istep(t * 3.5, length(uv1));
-//             f -= istep(t * 2.5, length(uv1));
-//             f += line(uv1, vec2(-t * 2), vec2(t * 2), t);
-//             f += line(uv1, vec2(-t * 2, t * 2), vec2(t * 2, -t * 2), t);
-//         } else if (k < 50) { // inductor
-//             f += istep(t * 2, length(uv1 - vec2(t * 2.5, 0)));
-//             f += istep(t * 2, length(uv1 - vec2(0, 0)));
-//             f += istep(t * 2, length(uv1 - vec2(-t * 2.5, 0)));
-//             f -= 2 * istep(t, length(uv1 - vec2(t * 2.5, 0)));
-//             f -= 2 * istep(t, length(uv1 - vec2(0, 0)));
-//             f -= 2 * istep(t, length(uv1 - vec2(-t * 2.5, 0)));
-//             f *= step(-t * 0.5, uv1.y);
-//         } else if (k < 60) { // switch
-//             f += istep(t, length(uv1 - vec2(t * 2.5, 0)));
-//             f += istep(t, length(uv1 + vec2(t * 2.5, 0)));
-//             f += line(uv1, vec2(t * 2, 0), vec2(-t * 2.5, t * (k < 55 ? 3 : 1)), t);
-//         }
-//     } else if (c == 3) {
-//         if (left_right) {
-//             uv1.xy = uv1.yx;
-//             if (up) {
-//                 uv1.x = -uv1.x;
-//             }
-//         } else if (right) {
-//             uv1.x = -uv1.x;
-//         }
-//         float k = rand(s0 + 4) * 20;
-//         if (k < 10) {
-//             f -= rect(uv1, vec2(0), vec2(t * 3));
-//             f = max(0, f);
-//             f += rect(uv1, vec2(-t * 3, 0), vec2(t * 0.5, t * 3));
-//             f += line(uv1, vec2(t * 0.25, t * 3.25), vec2(-t * 3, t), t);
-//             f += line(uv1, vec2(t * 0.25, -t * 3.25), vec2(-t * 3, -t), t);
-//         }
-//     }
-
-//     return vec4(f);
-// }

 // SRC 4 : bacteria
 subroutine(src_stage_sub) vec4 src_4(vec2 vUV, int seed, vec3 b1, vec2 f1, vec3 b2, vec2 f2, vec3 b3, vec2 f3)
@@ -240,23 +112,23 @@ subroutine ( src_stage_sub ) vec4 src_4(vec2 vUV, int seed, vec3 b1, vec2 f1, ve

    vec2 uv0 = vUV.st;
    float ratio = iResolution.x / iResolution.y;
-    vec2 uv1 = (uv0 - .5) * vec2(ratio, 1);
+    vec2 uv1 = (uv0 - .5) * vec2(ratio, 1.);

    // controls

-    float zoom = 2 + magic(f1, b1, seed + 10) * 20;
-    float details = 5 * magic(f2, b2, seed + 20);
-    float delta = magic(f3, b3, seed + 30);
+    float zoom = 2. + magic(f1, b1, seed + 10.) * 20.;
+    float details = 5. * magic(f2, b2, seed + 20.);
+    float delta = magic(f3, b3, seed + 30.);

    // logic

    uv1 *= zoom;

-    vec4 data = voronoi(uv1, 1, seed + 40, iBeats * 0.25);
+    vec4 data = voronoi(uv1, 1., seed + 40, iBeats * .25);

    float f = ease(data.x) + ease(data.y);

-    f = saw(f * (1 + data.x * details) - delta * 2.0);
+    f = saw(f * (1. + data.x * details) - delta * 2.);

    return vec4(f);
 }
@@ -268,25 +140,25 @@ subroutine ( src_stage_sub ) vec4 src_5(vec2 vUV, int seed, vec3 b1, vec2 f1, ve

    vec2 uv0 = vUV.st;
    float ratio = iResolution.x / iResolution.y;
-    vec2 uv1 = (uv0 - .5) * vec2(ratio, 1);
+    vec2 uv1 = (uv0 - .5) * vec2(ratio, 1.);

    // controls

-    float zoom = magic(f1, b1, seed + 10);
-    float voronoi_distort = magic(f2, b2, seed + 20);
-    float details = magic(f3, b3, seed + 30);
-    float noise_factor = magic(seed + 40);
+    float zoom = magic(f1, b1, seed + 10.);
+    float voronoi_distort = magic(f2, b2, seed + 20.);
+    float details = magic(f3, b3, seed + 30.);
+    float noise_factor = magic(seed + 40.);

    // logic

    vec2 uv2 = uv1;
-    uv2 *= zoom * 20 + 3;
+    uv2 *= zoom * 20. + 3.;
    uv2.x += iBeats;
    vec4 data = voronoi(uv2, voronoi_distort, seed + 50, iBeats);
    float f = data.x / (data.x + data.y);
-    f = sin(f * PI * (details * 20)) * 0.5 + 1;
-    int nf = int(noise_factor * 6);
-    f *= mix(1, noise_f(uv2, nf - 1), step(0.0, float(nf)));
+    f = sin(f * PI * (details * 20.)) * .5 + 1.;
+    int nf = int(noise_factor * 6.);
+    f *= mix(1., noise_f(uv2, nf - 1), step(.0, float(nf)));

    return vec4(f);
 }
@@ -301,8 +173,6 @@ subroutine ( src_stage_sub ) vec4 src_6(vec2 vUV, int seed, vec3 b1, vec2 f1, ve
    return src_thru(vUV, iTex3, seed, b1, f1, b2, f2, b3, f3);
 }

-#include inc_cp437.glsl
-
 // SRC 7 : cp437
 subroutine(src_stage_sub) vec4 src_7(vec2 vUV, int seed, vec3 b1, vec2 f1, vec3 b2, vec2 f2, vec3 b3, vec2 f3)
 {
@@ -310,28 +180,28 @@ subroutine ( src_stage_sub ) vec4 src_7(vec2 vUV, int seed, vec3 b1, vec2 f1, ve

    vec2 uv0 = vUV.st;
    float ratio = iResolution.x / iResolution.y;
-    vec2 uv1 = (uv0 - .5) * vec2(ratio, 1);
+    vec2 uv1 = (uv0 - .5) * vec2(ratio, 1.);

    // controls

-    float zoom = magic(f1, b1, seed + 10);
-    vec2 charset = magic_f(f2, b2, seed + 20);
-    vec3 charset_ctrl = magic_b(b2, seed + 20);
-    float char_delta = magic(f3, b3, seed + 30);
+    float zoom = magic(f1, b1, seed + 10.);
+    vec2 charset = magic_f(f2, b2, seed + 20.);
+    vec3 charset_ctrl = magic_b(b2, seed + 20.);
+    float char_delta = magic(f3, b3, seed + 30.);

    // logic

    vec2 uv2 = uv1;
-    uv2 *= zoom * 20 + 3;
+    uv2 *= zoom * 20. + 3.;
    uv2 += iBeats;
-    uv2 = mod(uv2, 100) + 100;
-    int start_char = charset_ctrl.x > 0 ? charsets[int(charset.x * CHARSETS) * 2] : 0x01;
-    int char_span = int((charset_ctrl.x > 0 ? charsets[int(charset.x * CHARSETS) * 2 + 1] : 255));
-    char_span = int(char_span * max(1 - charset.y, 1 / (char_span * 0.75)));
+    uv2 = mod(uv2, 100.) + 100.;
+    int start_char = charset_ctrl.x > 0. ? charsets[int(charset.x * CHARSETS) * 2] : 0x01;
+    int char_span = int((charset_ctrl.x > 0. ? charsets[int(charset.x * CHARSETS) * 2 + 1] : 255));
+    char_span = int(char_span * max(1. - charset.y, 1. / (char_span * .75)));
    ivec2 uv2i = ivec2(uv2);
-    int code = ((charset_ctrl.y < 1 || (uv2i.x % 2 ^ uv2i.y % 2) > 0) ? 1 : 0) * (start_char + int((rand(uv2i) + char_delta) * char_span) % char_span);
-    uv2 = mod(uv2, 1);
-    float f = char(uv2, code) ? 1 : 0;
+    int code = ((charset_ctrl.y < 1. || (uv2i.x % 2 ^ uv2i.y % 2) > 0) ? 1 : 0) * (start_char + int((rand(uv2i) + char_delta) * char_span) % char_span);
+    uv2 = mod(uv2, 1.);
+    float f = char(uv2, code) ? 1. : 0.;

    return vec4(f);
 }
@@ -344,24 +214,24 @@ subroutine ( src_stage_sub ) vec4 src_8(vec2 vUV, int seed, vec3 b1, vec2 f1, ve

    vec2 uv0 = vUV.st;
    float ratio = iResolution.x / iResolution.y;
-    vec2 uv1 = (uv0 - .5) * vec2(ratio, 1);
+    vec2 uv1 = (uv0 - .5) * vec2(ratio, 1.);

    // controls

-    float zoom = magic(f1, b1, seed + 10);
-    float sentence = magic_reverse(f2, b2, seed + 20);
-    float h_delta = magic(f3, b3, seed + 30);
-    vec3 h_delta_b = magic_b(b3, seed + 30);
+    float zoom = magic(f1, b1, seed + 10.);
+    float sentence = magic_reverse(f2, b2, seed + 20.);
+    float h_delta = magic(f3, b3, seed + 30.);
+    vec3 h_delta_b = magic_b(b3, seed + 30.);

    // logic

    vec2 uv2 = uv1;
-    uv2 *= (1 + zoom) * 12;
-    uv2.y += 0.5;
+    uv2 *= (1. + zoom) * 12.;
+    uv2.y += .5;
    int s = int(sentence * (SENTENCE_COUNT - 1));
-    uv2.x += floor(uv2.y) * (h_delta - 0.5) * 2;
-    uv2.y = mix(uv2.y, mod(uv2.y, 1), h_delta_b.x);
-    float f = write_sentence(uv2, vec2(-float(lengths[s]) * 0.5, 0), s);
+    uv2.x += floor(uv2.y) * (h_delta - .5) * 2.;
+    uv2.y = mix(uv2.y, mod(uv2.y, 1.), h_delta_b.x);
+    float f = write_sentence(uv2, vec2(-float(lengths[s]) * .5, 0.), s);

    return vec4(f);
 }
@@ -373,30 +243,30 @@ subroutine ( src_stage_sub ) vec4 src_9(vec2 vUV, int seed, vec3 b1, vec2 f1, ve

    vec2 uv0 = vUV.st;
    float ratio = iResolution.x / iResolution.y;
-    vec2 uv1 = (uv0 - .5) * vec2(ratio, 1);
+    vec2 uv1 = (uv0 - .5) * vec2(ratio, 1.);

    // controls

-    float h_shift = magic(f1, b1, seed + 10);
-    float sentence = magic_reverse(f2, b2, seed + 20);
-    float h_delta = magic(f3, b3, seed + 30);
-    vec3 h_delta_b = magic_b(b3, seed + 30);
+    float h_shift = magic(f1, b1, seed + 10.);
+    float sentence = magic_reverse(f2, b2, seed + 20.);
+    float h_delta = magic(f3, b3, seed + 30.);
+    vec3 h_delta_b = magic_b(b3, seed + 30.);

    // logic

    vec2 uv2 = uv1;
    uv2.x += h_shift;
-    uv2 *= 15;
-    uv2.y += 0.5;
+    uv2 *= 15.;
+    uv2.y += .5;
    int s = int(sentence * (SENTENCE_COUNT - 1));
    float slen = float(lengths[s]);
-    uv2.x += floor(uv2.y) * (h_delta - 0.5) * 2;
-    uv2.x = cmod(uv2.x, slen + 1);
+    uv2.x += floor(uv2.y) * (h_delta - .5) * 2.;
+    uv2.x = cmod(uv2.x, slen + 1.);
    vec2 uv3 = uv2;
-    uv3.y = mix(uv3.y, mod(uv3.y, 1), h_delta_b.x);
-    float f = write_sentence(uv3, vec2(-slen * 0.5, 0), s);
+    uv3.y = mix(uv3.y, mod(uv3.y, 1.), h_delta_b.x);
+    float f = write_sentence(uv3, vec2(-slen * .5, 0.), s);

-    f *= (1 - abs(floor(uv2.y) * 0.125)) * (1 - abs(floor(uv2.y) * 0.125));
+    f *= (1. - abs(floor(uv2.y) * .125)) * (1. - abs(floor(uv2.y) * .125));

    return vec4(f);
 }
@@ -408,14 +278,14 @@ subroutine ( src_stage_sub ) vec4 src_10(vec2 vUV, int seed, vec3 b1, vec2 f1, v

    vec2 uv0 = vUV.st;
    float ratio = iResolution.x / iResolution.y;
-    vec2 uv1 = (uv0 - .5) * vec2(ratio, 1);
+    vec2 uv1 = (uv0 - .5) * vec2(ratio, 1.);

    // controls

-    float zoom = 5 + magic(f1, b1, seed + 10) * 15;
-    float h_scroll = magic(f2, b2, seed + 20);
-    float max_elevation = magic(f3, b3, seed + 30) * 0.5;
-    float thick = 0.1;
+    float zoom = 5. + magic(f1, b1, seed + 10.) * 15.;
+    float h_scroll = magic(f2, b2, seed + 20.);
+    float max_elevation = magic(f3, b3, seed + 30.) * .5;
+    float thick = .1;

    // logic

@@ -423,32 +293,32 @@ subroutine ( src_stage_sub ) vec4 src_10(vec2 vUV, int seed, vec3 b1, vec2 f1, v

    vec2 uv3 = iso(uv2);

-    uv3 += vec2(h_scroll, 0);
+    uv3 += vec2(h_scroll, 0.);

    uv3 *= round(zoom);

-    vec2 umax = vec2(round(zoom), 300);
+    vec2 umax = vec2(round(zoom), 300.);

    vec2 u0 = mod(floor(uv3), umax);
-    vec2 u1 = mod(floor(uv3 + vec2(1, 0)), umax);
-    vec2 u2 = mod(floor(uv3 + vec2(0, 1)), umax);
-    vec2 u3 = mod(floor(uv3 + vec2(-1, 0)), umax);
-    vec2 u4 = mod(floor(uv3 + vec2(0, -1)), umax);
+    vec2 u1 = mod(floor(uv3 + vec2(1., 0.)), umax);
+    vec2 u2 = mod(floor(uv3 + vec2(0., 1.)), umax);
+    vec2 u3 = mod(floor(uv3 + vec2(-1., 0.)), umax);
+    vec2 u4 = mod(floor(uv3 + vec2(0., -1.)), umax);

-    float e0 = (rand(floor(u0)) * 2 - 1) * max_elevation;
-    float e1 = (rand(floor(u1)) * 2 - 1) * max_elevation;
-    float e2 = (rand(floor(u2)) * 2 - 1) * max_elevation;
-    float e3 = (rand(floor(u3)) * 2 - 1) * max_elevation;
-    float e4 = (rand(floor(u4)) * 2 - 1) * max_elevation;
+    float e0 = (rand(floor(u0)) * 2. - 1.) * max_elevation;
+    float e1 = (rand(floor(u1)) * 2. - 1.) * max_elevation;
+    float e2 = (rand(floor(u2)) * 2. - 1.) * max_elevation;
+    float e3 = (rand(floor(u3)) * 2. - 1.) * max_elevation;
+    float e4 = (rand(floor(u4)) * 2. - 1.) * max_elevation;

-    uv3 = mod(uv3, 1.0) - 0.5;
+    uv3 = mod(uv3, 1.) - .5;

-    float f = 0;
+    float f = 0.;

-    f = line(uv3, vec2(0, 0) - iso_z(e0), vec2(1, 0) - iso_z(e1), thick)
-            + line(uv3, vec2(0, 0) - iso_z(e0), vec2(0, 1) - iso_z(e2), thick)
-            + line(uv3, vec2(0, 0) - iso_z(e0), vec2(-1, 0) - iso_z(e3), thick)
-            + line(uv3, vec2(0, 0) - iso_z(e0), vec2(0, -1) - iso_z(e4), thick);
+    f = line(uv3, vec2(0., 0.) - iso_z(e0), vec2(1., 0.) - iso_z(e1), thick)
+            + line(uv3, vec2(0., 0.) - iso_z(e0), vec2(0., 1.) - iso_z(e2), thick)
+            + line(uv3, vec2(0., 0.) - iso_z(e0), vec2(-1., 0.) - iso_z(e3), thick)
+            + line(uv3, vec2(0., 0.) - iso_z(e0), vec2(0., -1.) - iso_z(e4), thick);

    return vec4(f);
 }
@@ -470,38 +340,38 @@ subroutine ( src_stage_sub ) vec4 src_12(vec2 vUV, int seed, vec3 b1, vec2 f1, v

    vec2 uv0 = vUV.st;
    float ratio = iResolution.x / iResolution.y;
-    vec2 uv1 = (uv0 - .5) * vec2(ratio, 1);
+    vec2 uv1 = (uv0 - .5) * vec2(ratio, 1.);

    // controls

-    float zoom = 5 + magic(f1, b1, seed + 10) * 15;
-    float shape = magic(f2, b2, seed + 20);
-    float repeat = 1 + magic(f3, b3, seed + 30) * 10;
+    float zoom = 5. + magic(f1, b1, seed + 10.) * 15.;
+    float shape = magic(f2, b2, seed + 20.);
+    float repeat = 1. + magic(f3, b3, seed + 30.) * 10.;

    // logic

-    float f = 0;
+    float f = 0.;

    vec2 uv2 = uv1;

    uv2 *= zoom;

-    uv2 = mod(uv2, 4);
+    uv2 = mod(uv2, 4.);

    vec2 uv3 = uv2;

-    uv3.y = mix(uv3.y, -uv3.y, step(2, uv2.x) * step(2, uv2.y));
-    uv3.y = mix(uv3.y, -uv3.y, istep(2, uv2.x) * istep(2, uv2.y));
+    uv3.y = mix(uv3.y, -uv3.y, step(2., uv2.x) * step(2., uv2.y));
+    uv3.y = mix(uv3.y, -uv3.y, istep(2., uv2.x) * istep(2., uv2.y));

    uv3.y = -uv3.y;

-    uv3.x = mix(-uv3.x, uv3.x, istep(3, uv2.x) * step(1, uv2.x));
-    uv3.x = mix(-uv3.x, uv3.x, istep(3, uv2.y) * step(1, uv2.y));
+    uv3.x = mix(-uv3.x, uv3.x, istep(3., uv2.x) * step(1., uv2.x));
+    uv3.x = mix(-uv3.x, uv3.x, istep(3., uv2.y) * step(1., uv2.y));

-    f = istep(0.5, saw((length(mod(uv3, 1)) + shape + 0.5) * repeat));
+    f = istep(.5, saw((length(mod(uv3, 1.)) + shape + .5) * repeat));

-    f = mix(1 - f, f, istep(1, abs(uv2.y - 2)) * istep(2, uv2.x));
-    f = mix(1 - f, f, step(1, abs(uv2.y - 2)) * step(2, uv2.x));
+    f = mix(1. - f, f, istep(1., abs(uv2.y - 2.)) * istep(2., uv2.x));
+    f = mix(1. - f, f, step(1., abs(uv2.y - 2.)) * step(2., uv2.x));

    return vec4(f);
 }
@@ -513,13 +383,13 @@ subroutine ( src_stage_sub ) vec4 src_13(vec2 vUV, int seed, vec3 b1, vec2 f1, v

    vec2 uv0 = vUV.st;
    float ratio = iResolution.x / iResolution.y;
-    vec2 uv1 = (uv0 - .5) * vec2(ratio, 1);
+    vec2 uv1 = (uv0 - .5) * vec2(ratio, 1.);

    // controls

-    float zoom = 5 + magic(f1, b1, seed + 10) * 15;
-    float shape = 0.1 + magic(f2, b2, seed + 20) * 0.9;
-    float repeat = 1 + magic(f3, b3, seed + 30) * 10;
+    float zoom = 5. + magic(f1, b1, seed + 10.) * 15.;
+    float shape = .1 + magic(f2, b2, seed + 20.) * .9;
+    float repeat = 1. + magic(f3, b3, seed + 30.) * 10.;

    // logic

@@ -527,13 +397,13 @@ subroutine ( src_stage_sub ) vec4 src_13(vec2 vUV, int seed, vec3 b1, vec2 f1, v

    uv2 *= zoom;

-    uv2 = mod(uv2, 2);
+    uv2 = mod(uv2, 2.);

-    uv2 = abs(uv2 - 1);
+    uv2 = abs(uv2 - 1.);

-    float f = istep(1, length(uv2)) * istep(1, length(1 - uv2));
+    float f = istep(1., length(uv2)) * istep(1., length(1. - uv2));

-    f *= istep(0.5, saw((length(uv2) + shape + 0.5) * repeat)) * istep(0.5, saw((length(1 - uv2) + shape + 0.5) * repeat));
+    f *= istep(.5, saw((length(uv2) + shape + .5) * repeat)) * istep(.5, saw((length(1. - uv2) + shape + .5) * repeat));

    return vec4(f);
 }
@@ -545,15 +415,15 @@ subroutine ( src_stage_sub ) vec4 src_14(vec2 vUV, int seed, vec3 b1, vec2 f1, v

    vec2 uv0 = vUV.st;
    float ratio = iResolution.x / iResolution.y;
-    vec2 uv1 = (uv0 - .5) * vec2(ratio, 1);
+    vec2 uv1 = (uv0 - .5) * vec2(ratio, 1.);

    // controls

-    float size = magic(f1, b1, seed + 10) * 2 + 0.1;
-    float dx = (fmagic(f2, b2, seed + 20) * (1 - size * 0.06) - 0.5) * ratio;
-    bool flip_x = magic_trigger(b2, seed + 20);
-    float dy = fmagic(f3, b3, seed + 30) * (1 - size * 0.17) - 0.5;
-    bool flip_y = magic_trigger(b3, seed + 30);
+    float size = magic(f1, b1, seed + 10.) * 2. + .1;
+    float dx = (fmagic(f2, b2, seed + 20.) * (1. - size * .06) - .5) * ratio;
+    bool flip_x = magic_trigger(b2, seed + 20.);
+    float dy = fmagic(f3, b3, seed + 30.) * (1. - size * .17) - .5;
+    bool flip_y = magic_trigger(b3, seed + 30.);

    // logic

@@ -571,15 +441,15 @@ subroutine ( src_stage_sub ) vec4 src_14(vec2 vUV, int seed, vec3 b1, vec2 f1, v

    uv2 /= size;

-    uv2 *= -rot(-PI / 2);
+    uv2 *= -rot(-PI * 0.5);

-    float f = istep(0, (uv2.x * 2 + uv2.y) * (uv2.x * 2 - uv2.y)) * istep(0, uv2.y);
+    float f = istep(0., (uv2.x * 2. + uv2.y) * (uv2.x * 2. - uv2.y)) * istep(0., uv2.y);

-    uv2.y += 0.1;
+    uv2.y += .1;

-    f -= istep(0, (uv2.x + uv2.y * 3) * (uv2.x - uv2.y * 3)) * istep(0, uv2.y);
+    f -= istep(0., (uv2.x + uv2.y * 3.) * (uv2.x - uv2.y * 3.)) * istep(0., uv2.y);

-    f += rect(uv2, vec2(0, -0.04), vec2(0.01, 0.04));
+    f += rect(uv2, vec2(0., -.04), vec2(.01, .04));

    return vec4(f);
 }
@@ -587,33 +457,33 @@ subroutine ( src_stage_sub ) vec4 src_14(vec2 vUV, int seed, vec3 b1, vec2 f1, v
 // SRC 15 : Random
 subroutine(src_stage_sub) vec4 src_15(vec2 vUV, int seed, vec3 b1, vec2 f1, vec3 b2, vec2 f2, vec3 b3, vec2 f3)
 {
-    int src = int(randTime(seed + 100) * 14);
+    int src = int(randTime(seed + 100.) * 14.) + 1;

-    if (src == 0) {
+    if (src == 1) {
        return src_1(vUV, seed, b1, f1, b2, f2, b3, f3);
-    } else if (src == 1) {
-        return src_2(vUV, seed, b1, f1, b2, f2, b3, f3);
    } else if (src == 2) {
-        return src_3(vUV, seed, b1, f1, b2, f2, b3, f3);
+        return src_2(vUV, seed, b1, f1, b2, f2, b3, f3);
    } else if (src == 3) {
-        return src_4(vUV, seed, b1, f1, b2, f2, b3, f3);
+        return src_3(vUV, seed, b1, f1, b2, f2, b3, f3);
    } else if (src == 4) {
-        return src_5(vUV, seed, b1, f1, b2, f2, b3, f3);
+        return src_4(vUV, seed, b1, f1, b2, f2, b3, f3);
    } else if (src == 5) {
-        return src_6(vUV, seed, b1, f1, b2, f2, b3, f3);
+        return src_5(vUV, seed, b1, f1, b2, f2, b3, f3);
    } else if (src == 6) {
-        return src_7(vUV, seed, b1, f1, b2, f2, b3, f3);
+        return src_6(vUV, seed, b1, f1, b2, f2, b3, f3);
    } else if (src == 7) {
-        return src_8(vUV, seed, b1, f1, b2, f2, b3, f3);
+        return src_7(vUV, seed, b1, f1, b2, f2, b3, f3);
    } else if (src == 8) {
-        return src_9(vUV, seed, b1, f1, b2, f2, b3, f3);
+        return src_8(vUV, seed, b1, f1, b2, f2, b3, f3);
    } else if (src == 9) {
-        return src_10(vUV, seed, b1, f1, b2, f2, b3, f3);
+        return src_9(vUV, seed, b1, f1, b2, f2, b3, f3);
    } else if (src == 10) {
-        return src_11(vUV, seed, b1, f1, b2, f2, b3, f3);
+        return src_10(vUV, seed, b1, f1, b2, f2, b3, f3);
    } else if (src == 11) {
-        return src_12(vUV, seed, b1, f1, b2, f2, b3, f3);
+        return src_11(vUV, seed, b1, f1, b2, f2, b3, f3);
    } else if (src == 12) {
+        return src_12(vUV, seed, b1, f1, b2, f2, b3, f3);
+    } else if (src == 13) {
        return src_13(vUV, seed, b1, f1, b2, f2, b3, f3);
    } else {
        return src_14(vUV, seed, b1, f1, b2, f2, b3, f3);
@@ -49,6 +49,7 @@ static void print_help(int status_code) {
      "[--wayland] "
      "[--cocoa] "
      "[--win32] "
+      "[-as / -nas] "
      "[-oma=MAJOR] "
      "[-omi=MINOR] "
      "\n\n"
@@ -87,6 +88,8 @@ static void print_help(int status_code) {
      "  -nls, --no-load-state       do not load saved state\n"
      "  -ss, --save-state           save state (default)\n"
      "  -nss, --no-save-state       do not save state\n"
+      "  -as, --auto-save            continuously save state (every ~10ms)\n"
+      "  -nas, --no-auto-save        do not continuously save state (default)\n"
      "  -mr, --midi-reconnect       auto-reconnect midi (default)\n"
      "  -nmr, --no-midi-reconnect   do not auto-reconnect midi\n"
      "  -tm, --trace-midi           print midi code and values\n"
@@ -168,6 +171,7 @@ void args_parse(Parameters *params, int argc, char **argv) {
  params->internal_size = 720;
  params->load_state = true;
  params->save_state = true;
+  params->auto_save = false;
  params->midi_reconnect = true;
  params->trace_midi = false;
  params->trace_fps = false;
@@ -234,6 +238,10 @@ void args_parse(Parameters *params, int argc, char **argv) {
      params->save_state = true;
    } else if (is_arg(arg, "-nss") || is_arg(arg, "--no-save-state")) {
      params->save_state = false;
+    } else if (is_arg(arg, "-as") || is_arg(arg, "--auto-save")) {
+      params->auto_save = true;
+    } else if (is_arg(arg, "-nas") || is_arg(arg, "--no-auto-save")) {
+      params->auto_save = false;
    } else if (is_arg(arg, "-mr") || is_arg(arg, "--midi-reconnect")) {
      params->midi_reconnect = true;
    } else if (is_arg(arg, "-nmr") || is_arg(arg, "--no-midi-reconnect")) {
@@ -87,6 +87,12 @@
 #define MAX_TAP_VALUES 10
 #endif

+/* STATE */
+
+#ifndef STATE_AUTO_SAVE_SECONDS
+#define STATE_AUTO_SAVE_SECONDS 0.1
+#endif
+
 /* OPENGL */

 #ifndef OPENGL_MAJOR_VERSION
@@ -98,6 +104,7 @@
 #endif

 /* GLFW CONSTANTS */
+
 #ifndef GLFW_BACKENDS
 #define GLFW_BACKEND_ANY 0
 #define GLFW_BACKEND_X11 1
@@ -109,10 +109,12 @@ void file_dump(const char *path, const char *content) {
  fclose(file_pointer);
 }

-void file_write(const char *path, const StringArray *lines) {
+void file_write(const char *path, const StringArray *lines, const bool log) {
  FILE *file_pointer;

+  if (log) {
    log_info("Writing %s...", path);
+  }

  // open file
  file_pointer = fopen(path, "w");
@@ -9,7 +9,7 @@ bool file_should_update(const File *file);

 bool file_update(File *file);

-void file_write(const char *path, const StringArray *lines);
+void file_write(const char *path, const StringArray *lines, const bool log);

 void file_dump(const char *path, const char *content);

@@ -207,6 +207,7 @@ static void start_state_background_write() {
  process_args->context = &context;
  process_args->state_config = project.state_config;
  process_args->midi = &midi;
+  process_args->auto_save = init_params.auto_save;
  if (pthread_create(&thread, NULL, state_background_write, process_args) ==
      0) {
    pthread_detach(thread);
@@ -12,6 +12,7 @@
 #include "rand.h"
 #include "state.h"
 #include "tempo.h"
+#include "timer.h"

 static void safe_midi_write(MidiDevice midi, unsigned int code,
                            unsigned char value) {
@@ -179,13 +180,44 @@ static void load_from_index_file(Context *context, StateConfig state_config,
 }

 static void save_to_file(const Context *context, StateConfig state_config,
-                         const char *state_file) {
+                         const char *state_file, const bool log) {
  StringArray lines;

+  if (log) {
    log_info("Saving state to '%s'...", state_file);
+  }

  lines.length = 0;

+  snprintf(lines.values[lines.length++], STR_LEN, "time=%f", context->time);
+  if (lines.length > ARRAY_SIZE) {
+    log_error("Too many values to save");
+    return;
+  }
+  snprintf(lines.values[lines.length++], STR_LEN, "beats=%f",
+           context->tempo_total);
+  if (lines.length > ARRAY_SIZE) {
+    log_error("Too many values to save");
+    return;
+  }
+  snprintf(lines.values[lines.length++], STR_LEN, "demo=%d",
+           context->demo ? 1 : 0);
+  if (lines.length > ARRAY_SIZE) {
+    log_error("Too many values to save");
+    return;
+  }
+  snprintf(lines.values[lines.length++], STR_LEN, "auto_random=%d",
+           context->auto_random ? 1 : 0);
+  if (lines.length > ARRAY_SIZE) {
+    log_error("Too many values to save");
+    return;
+  }
+  snprintf(lines.values[lines.length++], STR_LEN, "auto_random_cycle=%d",
+           context->auto_random_cycle);
+  if (lines.length > ARRAY_SIZE) {
+    log_error("Too many values to save");
+    return;
+  }
  snprintf(lines.values[lines.length++], STR_LEN, "tempo=%d",
           (unsigned int)context->tempo.tempo);
  if (lines.length > ARRAY_SIZE) {
@@ -249,16 +281,16 @@ static void save_to_file(const Context *context, StateConfig state_config,
    }
  }

-  file_write(state_file, &lines);
+  file_write(state_file, &lines, log);
 }

 static void save_to_default_file(const Context *context,
-                                 StateConfig state_config) {
+                                 StateConfig state_config, const bool log) {
  char state_file[STR_LEN];

  snprintf(state_file, STR_LEN, "%s.txt", state_config.save_file_prefix);

-  save_to_file(context, state_config, state_file);
+  save_to_file(context, state_config, state_file, log);
 }

 static void save_to_index_file(const Context *context, StateConfig state_config,
@@ -268,7 +300,7 @@ static void save_to_index_file(const Context *context, StateConfig state_config,
  snprintf(state_file, STR_LEN, "%s.%d.txt", state_config.save_file_prefix,
           index);

-  save_to_file(context, state_config, state_file);
+  save_to_file(context, state_config, state_file, true);
 }

 void state_parse_config(StateConfig *state_config, const ConfigFile *config) {
@@ -727,16 +759,20 @@ void *state_background_write(void *args) {
  Context *context = process_args->context;
  StateConfig state_config = process_args->state_config;
  MidiDevice *midi = process_args->midi;
+  bool auto_save = process_args->auto_save;

  bool beat_active;
  bool last_active;
  bool change;
  bool last_change;
+  bool do_auto_save;
+  bool last_auto_save;

  log_info("(state) background writing started");

  last_active = false;
  last_change = false;
+  last_auto_save = false;

  while (!context->stop) {
    beat_active = tempo_progress(&context->tempo, 1.0) < 0.5;
@@ -762,6 +798,15 @@ void *state_background_write(void *args) {
    }

    last_change = change;
+
+    do_auto_save = fmod(context->time, STATE_AUTO_SAVE_SECONDS) <
+                   STATE_AUTO_SAVE_SECONDS * 0.5;
+
+    if (auto_save && do_auto_save && !last_auto_save) {
+      save_to_default_file(context, state_config, false);
+    }
+
+    last_auto_save = do_auto_save;
  }

  log_info("(state) background writing stopped by main thread");
@@ -802,5 +847,5 @@ void state_init(Context *context, StateConfig state_config, bool demo,
 }

 void state_save(const Context *context, StateConfig state_config) {
-  save_to_default_file(context, state_config);
+  save_to_default_file(context, state_config, true);
 }
@@ -55,6 +55,7 @@ typedef struct Parameters {
  unsigned int internal_size;
  bool load_state;
  bool save_state;
+  bool auto_save;
  bool midi_reconnect;
  bool trace_midi;
  bool trace_fps;
@@ -279,6 +280,7 @@ typedef struct StateBackgroundWriteArgs {
  Context *context;
  StateConfig state_config;
  MidiDevice *midi;
+  bool auto_save;
 } StateBackgroundWriteArgs;

 // timer.c
Author	SHA1	Message	Date
klemek	dcd35af4f1	fix(default): small fixes in default project	2026-08-30 11:30:37 +02:00
klemek	7a2bafc8de	feat(default): faster rand in default project	2026-08-30 11:30:22 +02:00
klemek	2a7d1f6df4	docs: update README Clang Lint CI / lint-no-video (push) Successful in 50s Details Clang Build CI / run-no-video (push) Successful in 58s Details Clang Build CI / run-video (push) Successful in 59s Details Clang Build CI / build-release (push) Successful in 1m29s Details Clang Lint CI / lint-video (push) Successful in 1m5s Details	2026-08-29 12:00:56 +02:00
klemek	80add2ec67	feat(state): auto-save	2026-08-29 12:00:50 +02:00
klemek	9d300a69c1	feat(state): save more data in files Clang Lint CI / lint-no-video (push) Successful in 1m24s Details Clang Build CI / run-no-video (push) Successful in 1m29s Details Clang Build CI / run-video (push) Successful in 1m41s Details Clang Build CI / build-release (push) Successful in 2m48s Details Clang Lint CI / lint-video (push) Successful in 1m48s Details	2026-08-29 11:29:11 +02:00
klemek	1f7291fce9	refactor(default): add demo logo on main screen	2026-08-28 20:15:38 +02:00
klemek	674dc50ff7	refactor(default): glsl cleaning (2/2)	2026-08-28 20:10:09 +02:00