23 lines
435 B
Text
23 lines
435 B
Text
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#version 120
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uniform mat4 P;
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uniform mat4 MV;
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uniform vec2 screenSize;
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attribute vec4 aPos;
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attribute float aAlp;
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attribute vec3 aCol;
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attribute float aSca;
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varying vec4 vCol;
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void main()
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{
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gl_Position = P * MV * aPos;
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vCol.rgb = aCol;
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vCol.a = aAlp;
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// http://stackoverflow.com/questions/25780145/gl-pointsize-corresponding-to-world-space-size
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gl_PointSize = screenSize.y * P[1][1] * aSca / gl_Position.w;
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}
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