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// ShaderToy conversion template for 64k demo project
// TODO: Paste ShaderToy mainImage() function below and adapt
#include "sequence_uniforms"
#include "render/fullscreen_uv_vs" // <- VertexOutput + vs_main
// Scene effect: only uniforms (bindings 0,1 unused)
// For post-process (input texture needed), add:
// @group(0) @binding(0) var smplr: sampler;
// @group(0) @binding(1) var txt: texture_2d<f32>;
@group(0) @binding(2) var<uniform> uniforms: UniformsSequenceParams;
// ============================================================================
// PASTE SHADERTOY CODE HERE
// ============================================================================
// ShaderToy → WGSL conversion notes:
//
// 1. Replace ShaderToy uniforms:
// iResolution.xy → uniforms.resolution
// iTime → uniforms.time
// fragCoord → in.position.xy (pixel coords) or in.uv * uniforms.resolution
// fragColor → return value
//
// 2. Coordinate conversion:
// vec2 uv = fragCoord / iResolution.xy;
// becomes:
// let uv = in.uv; // [0..1], origin top-left
// // OR for ShaderToy convention (origin bottom-left):
// let uv = vec2f(in.uv.x, 1.0 - in.uv.y);
//
// 3. Type syntax changes:
// float → f32
// vec2/vec3/vec4 → vec2f, vec3f, vec4f
// mat2/mat3/mat4 → mat2x2f, mat3x3f, mat4x4f
//
// 4. Function syntax:
// float foo(vec2 p) → fn foo(p: vec2f) -> f32
//
// 5. Common functions (mostly same):
// mix, sin, cos, length, normalize, dot, cross, fract(), etc.
// mod(x, y) → x % y
//
// 6. Texture sampling (requires bindings 0,1 in C++ and shader):
// texture(iChannel0, uv) → textureSample(txt, smplr, uv)
//
// 7. Variable declarations:
// float x = 1.0; → var x: f32 = 1.0; OR let x = 1.0;
// const float x = 1.0; → const x: f32 = 1.0;
//
// 8. Beat / audio:
// uniforms.beat_time → absolute musical beats
// uniforms.beat_phase → fractional beat [0..1]
// uniforms.audio_intensity → audio reactivity
//
// ============================================================================
@fragment fn fs_main(in: VertexOutput) -> @location(0) vec4f {
// TODO: Paste and adapt ShaderToy mainImage() body here
// Standard UV (origin top-left, [0..1])
let uv = in.uv;
// For ShaderToy convention (origin bottom-left, [-1..1] centered):
// let q = vec2f(in.uv.x, 1.0 - in.uv.y);
// var coord = q * 2.0 - 1.0;
// coord.x *= uniforms.aspect_ratio;
// TODO: Your effect code here
var col = vec3f(uv.x, uv.y, 0.5);
// Optional: Sample previous frame (requires bindings 0,1)
// var prev_col = textureSample(txt, smplr, uv);
// Optional: Audio reactivity
// col *= 1.0 + uniforms.audio_intensity * 0.2;
// Optional: Beat sync
// col *= 1.0 + uniforms.beat_phase * 0.1;
return vec4f(col, 1.0);
}
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