57 lines
1.7 KiB
Plaintext
57 lines
1.7 KiB
Plaintext
shader_type spatial;
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render_mode world_vertex_coords;
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uniform vec3 color = vec3(0.1, 0.4, 0.8);
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uniform float foamHeight = 0.2;
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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 sampler2D dirs;
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varying float yOffset;
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float random(float x, float y){
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return (texture(dirs, vec2(x / 32.0, y / 2.0)).r + 1.0) / 2.0;
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}
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float calcHeight(float x, float y){
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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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for (int i = 0; i < waveCount; i++){
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vec2 dir = vec2(random(float(i), 0.0), random(float(i), 1.0));
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float s = sin(frequency * freq * dot(dir, vec2(x, y)) + TIME);
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offset += amplitude * amp * pow(E, s);
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//offset += amplitude * amp * pow(E, sin(frequency * freq * (TIME + (random(float(i), 0.0) * x) + (random(float(i), 1.0) * y))));
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amp *= amplitudeScaleFactor;
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freq *= frequencyScaleFactor;
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}
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return offset;
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}
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void vertex() {
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yOffset = VERTEX.y;
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vec3 b = vec3(VERTEX.x, VERTEX.y + calcHeight(VERTEX.x + 0.01, VERTEX.z), VERTEX.z);
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vec3 c = vec3(VERTEX.x, VERTEX.y + calcHeight(VERTEX.x, VERTEX.z + 0.01), VERTEX.z);
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VERTEX.y += calcHeight(VERTEX.x, VERTEX.z);
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NORMAL = normalize(cross(b - VERTEX, c - VERTEX));
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yOffset += VERTEX.y;
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}
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void fragment() {
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ALBEDO = color;
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//SPECULAR = 1.0;
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float strength = yOffset * texture(foamTex, UV).r;
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//if (strength >= foamHeight) ALBEDO = ALBEDO + vec3(1, 1, 1) * (strength + foamHeight);
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//ALPHA = 0.9;
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ALBEDO = NORMAL;
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}
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//void light() {
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// Called for every pixel for every light affecting the material.
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// Uncomment to replace the default light processing function with this one.
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//}
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