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24 lines
624 B
24 lines
624 B
#version 330
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// Input vertex attributes
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in vec3 vertexPosition;
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// Input uniform values
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uniform mat4 mvp;
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uniform float currentTime;
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// NOTE: Add here your custom variables
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void main()
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{
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// Unpack data from vertexPosition
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vec2 pos = vertexPosition.xy;
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float period = vertexPosition.z;
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// Calculate final vertex position (jiggle it around a bit horizontally)
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pos += vec2(100, 0) * sin(period * currentTime);
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gl_Position = mvp * vec4(pos, 0.0, 1.0);
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// Calculate the screen space size of this particle (also vary it over time)
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gl_PointSize = 10 - 5 * abs(sin(period * currentTime));
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}
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