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https://github.com/TeamMidnightDust/MoreCanvasCompat.git
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34 lines
1.1 KiB
GLSL
34 lines
1.1 KiB
GLSL
#include frex:shaders/api/vertex.glsl
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#include frex:shaders/api/world.glsl
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#include frex:shaders/lib/math.glsl
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#include frex:shaders/lib/noise/noise4d.glsl
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/******************************************************
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canvas:shaders/material/water.vert
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Based on "GPU-Generated Procedural Wind Animations for Trees"
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by Renaldas Zioma in GPU Gems 3, 2007
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https://developer.nvidia.com/gpugems/gpugems3/part-i-geometry/chapter-6-gpu-generated-procedural-wind-animations-trees
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******************************************************/
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#define NOISE_SCALE 0.125
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void frx_startVertex(inout frx_VertexData data) {
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#ifdef ANIMATED_FOLIAGE
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float rain = frx_rainGradient();
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float globalWind = 0.3;
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// wind gets stronger higher in the world
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globalWind *= (0.5 + smoothstep(64.0, 255.0, data.vertex.y));
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float t = frx_renderSeconds() * 0.05;
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vec3 pos = (data.vertex.xyz + frx_modelOriginWorldPos()) * NOISE_SCALE;
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float wind = snoise(vec4(pos, t)) * globalWind;
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data.vertex.x += sin(t * 4) * wind * 0.3;
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data.vertex.y += (cos(t) * cos(t * 3) * cos(t * 5) * cos(t * 7) + sin(t * 25)) * wind;
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data.vertex.z += sin(t * 4) * wind * 0.3;
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#endif
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}
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