34 lines
1.1 KiB
Plaintext
34 lines
1.1 KiB
Plaintext
shader_type canvas_item;
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uniform float foamDecayRate = 0.2;
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uniform float foamGrowth = 0.5;
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uniform float foamHeight = 0.2;
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uniform float speed = 1.0;
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uniform sampler2D foamTex;
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uniform float amplitude = 0.2;
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uniform float frequency = 1.0;
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uniform int waveCount = 5;
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uniform float amplitudeScaleFactor = 0.82;
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uniform float frequencyScaleFactor = 1.18;
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uniform float dirs[40];
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uniform sampler2D tex;
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//global uniform float DELTA;
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void fragment() {
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//float brightness = texture(tex, UV).r - (foamDecayRate * DELTA);
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float brightness = texture(tex, UV).r * foamDecayRate;
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float amp = 1.0;
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float freq = 1.0;
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float offset = 0.0;
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float x = (UV.x * 50.0) - 25.0;
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float y = (UV.y * 50.0) - 25.0;
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for (int i = 0; i < waveCount; i++){
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offset += amplitude * amp * pow(E, sin(frequency * freq * (speed * TIME + (dirs[2 * i] * x) + (dirs[2 * i + 1] * y))));
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amp *= amplitudeScaleFactor;
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freq *= frequencyScaleFactor;
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}
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//if (offset >= foamHeight * 1.8) brightness += foamGrowth * DELTA;
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if (offset >= foamHeight * 1.8) brightness += foamGrowth;
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COLOR = vec4(brightness, brightness, brightness, 1.0);
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}
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