42 lines
1.0 KiB
GLSL
42 lines
1.0 KiB
GLSL
#version 450
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// Name: Test
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// Author: JailDesigner
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//
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// Vulkan port of test.gl.glsl. Bindings follow the SDL3 GPU convention:
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// set=3, binding=0 — fragment uniform buffer (ShadertoyUniforms in C++).
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layout(location = 0) in vec2 vUV;
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layout(location = 0) out vec4 FragColor;
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layout(set = 3, binding = 0) uniform ShadertoyUBO {
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float iTime;
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vec2 iResolution;
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} u;
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vec3 palette(float t) {
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vec3 a = vec3(1.0, 0.5, 0.5);
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vec3 b = vec3(1.0, 0.5, 0.5);
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vec3 c = vec3(1.0, 1.0, 1.0);
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vec3 d = vec3(0.263, 0.416, 0.557);
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return a + b * cos(6.28318 * (c * t * d));
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}
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void mainImage(out vec4 fragColor, in vec2 fragCoord) {
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vec2 uv = (fragCoord * 2.0 - u.iResolution) / u.iResolution.y;
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float d = length(uv);
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vec3 col = palette(d);
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d = sin(d * 8.0 + u.iTime) / 8.0;
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d = abs(d);
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d = 0.02 / d;
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col *= d;
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fragColor = vec4(col, 1.0);
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}
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void main() {
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vec2 fragCoordPixels = vUV * u.iResolution;
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vec4 outColor;
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mainImage(outColor, fragCoordPixels);
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FragColor = outColor;
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}
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