A.4. Geometry shader plugs

A.4. Geometry shader plugs
	Appendix A. Reference of available plugs

A.4. Geometry shader plugs

Each geometry shader plug PLUG_geometry_vertex_xxx enhances what happens when the corresponding geometryVertexXxx function is called. See Chapter 6, Extensions for geometry shaders for details.

void PLUG_geometry_vertex_set(
  const in int index)

Set current geometry shader output to be equal to geometry shader input with given index. If your effect defines a custom varying value (output from vertex shader, input to fragment shader) then you should override this plug, to make geometry shaders working seamlessly with your effect.

void PLUG_geometry_vertex_zero()

Set current geometry shader output to be zero.

void PLUG_geometry_vertex_add(
  const in int index,
  const in float scale)

Add to the current geometry shader output value from input index, scaled by given scale.


A.3. Lights plugs (internal; at vertex or fragment shader)		References