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Revision 6871
(checked in by robert, 2 years ago)
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Checked in first cut of new SVN for OpenSceneGraph-Data
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uniform float inversePeriod; |
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uniform vec4 particleColour; |
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uniform float particleSize; |
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uniform float osg_SimulationTime; |
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varying vec4 colour; |
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void main(void) |
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{ |
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float offset = gl_Vertex.z; |
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float startTime = gl_MultiTexCoord1.x; |
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vec4 v_current = gl_Vertex; |
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v_current.z = fract( (osg_SimulationTime - startTime)*inversePeriod - offset); |
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colour = particleColour; |
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gl_Position = gl_ModelViewProjectionMatrix * v_current; |
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float pointSize = abs(1280.0*particleSize / gl_Position.w); |
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//gl_PointSize = max(ceil(pointSize),2); |
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gl_PointSize = ceil(pointSize); |
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colour.a = 0.05+(pointSize*pointSize)/(gl_PointSize*gl_PointSize); |
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} |
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