neru
26 lines
737 B
GLSL
26 lines
737 B
GLSL
float worldX = instanceMatrix[3][0];
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float worldZ = instanceMatrix[3][2];
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float windSpeed = 0.3;
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float windScale = 0.04;
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vec2 windPos = vec2(worldX, worldZ) * windScale;
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vec2 windFlow = windPos + vec2(uTime * windSpeed, uTime * windSpeed * 0.7);
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float windStrength = fbm(windFlow);
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windStrength = windStrength * 0.6 + 0.3;
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float turbulence = fbm(windPos * 3.0 + uTime * 2.0) * 0.15;
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vec2 windDir = vec2(
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fbm(windPos * 0.5 + vec2(uTime * 0.1, 0.0)),
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fbm(windPos * 0.5 + vec2(0.0, uTime * 0.1))
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);
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windDir = normalize(windDir - 0.5) * 0.8;
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float swayAmount = (windStrength + turbulence) * uv.y * uv.y;
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transformed.x += swayAmount * windDir.x;
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transformed.z += swayAmount * windDir.y;
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transformed.y -= abs(swayAmount) * 0.2;
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