Reestructura carpetes: src->source, third_party->source/external, shaders->data/shaders

data/shaders/water/meta.txt

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+Name: Water
+Author: diatribes

data/shaders/water/water.frag.msl

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+#include <metal_stdlib>
+using namespace metal;
+
+// Water — diatribes
+// MSL port of water.vk.glsl. Entry point is named after the shader (water_fs).
+
+struct ShadertoyUBO {
+    float iTime;
+    float2 iResolution;
+};
+
+struct PassthroughVOut {
+    float4 pos [[position]];
+    float2 uv;
+};
+
+fragment float4 water_fs(PassthroughVOut in [[stage_in]],
+                         constant ShadertoyUBO& U [[buffer(0)]]) {
+    float2 fragCoord = in.uv * U.iResolution;
+    float2 u = fragCoord;
+
+    float s = 0.002, i = 0.0, n;
+    float3 r = float3(U.iResolution, U.iResolution.x / U.iResolution.y);
+    float3 p = float3(0);
+    u = (u - r.xy / 2.0) / r.y - 0.3;
+
+    float4 o = float4(0);
+
+    for (; i < 32.0 && s > 0.001; i++) {
+        float4 term = float4(5, 2, 1, 0) / max(length(u - 0.1), 0.001);
+        o += min(term, float4(100.0));
+        p += float3(u * s, s);
+        s = 1.0 + p.y;
+        for (n = 0.01; n < 1.0; n += n) {
+            s += abs(dot(sin(p.z + U.iTime + p / n), float3(1))) * n * 0.1;
+        }
+    }
+    o = tanh(o / 5e2);
+    return o;
+}

data/shaders/water/water.gl.glsl

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+// Name: Water
+// Author: diatribes
+// URL: https://www.shadertoy.com/view/tXjXDy
+#version 330 core
+precision highp float;
+
+out vec4 FragColor;
+in vec2 vUV;
+uniform vec2 iResolution;
+uniform float iTime;
+
+/*
+    -2 by @FabriceNeyret2
+
+    thanks!!  :D
+
+    If it doesn't display correctly, change line 17 "r/r" to "vec3(1)"
+*/
+
+void mainImage( out vec4 o, vec2 u ) {
+    float s=.002, i=0., n;  // FIXED: Initialize i=0
+    vec3 r = vec3(iResolution.xy, iResolution.x/iResolution.y);
+    vec3 p = vec3(0);
+    u = (u-r.xy/2.)/r.y-.3;
+
+    o = vec4(0);  // FIXED: Initialize output to black
+
+    for(; i < 32. && s > .001; i++) {
+        // Clamp only extreme overflow values, let normal brightness through
+        vec4 term = vec4(5,2,1,0)/max(length(u-.1), 0.001);
+        o += min(term, vec4(100.0));
+        for (p += vec3(u*s,s), s = 1. + p.y, n =.01; n < 1.; n+=n) {
+            s += abs(dot(sin(p.z+iTime+p / n), vec3(1))) * n*.1;
+        }
+    }
+    o = tanh(o/5e2);
+}
+
+void main() {
+    vec2 fragCoordPixels = vUV * iResolution;
+    vec4 outColor;
+    mainImage(outColor, fragCoordPixels);
+    FragColor = outColor;
+}

data/shaders/water/water.vk.glsl

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+#version 450
+
+// Name: Water
+// Author: diatribes
+// URL: https://www.shadertoy.com/view/tXjXDy
+
+layout(location = 0) in  vec2 vUV;
+layout(location = 0) out vec4 FragColor;
+
+layout(set = 3, binding = 0) uniform ShadertoyUBO {
+    float iTime;
+    vec2  iResolution;
+};
+
+/*
+    -2 by @FabriceNeyret2
+    thanks!!  :D
+
+    If it doesn't display correctly, change line "r/r" to "vec3(1)"
+*/
+
+void mainImage( out vec4 o, vec2 u ) {
+    float s=.002, i=0., n;
+    vec3 r = vec3(iResolution.xy, iResolution.x/iResolution.y);
+    vec3 p = vec3(0);
+    u = (u-r.xy/2.)/r.y-.3;
+
+    o = vec4(0);
+
+    for(; i < 32. && s > .001; i++) {
+        vec4 term = vec4(5,2,1,0)/max(length(u-.1), 0.001);
+        o += min(term, vec4(100.0));
+        for (p += vec3(u*s,s), s = 1. + p.y, n =.01; n < 1.; n+=n) {
+            s += abs(dot(sin(p.z+iTime+p / n), vec3(1))) * n*.1;
+        }
+    }
+    o = tanh(o/5e2);
+}
+
+void main() {
+    vec2 fragCoordPixels = vUV * iResolution;
+    vec4 outColor;
+    mainImage(outColor, fragCoordPixels);
+    FragColor = outColor;
+}