Transparency Shader API
[Inventor Shader API.]

To properly handle transparency, your fragment shader should contains the following function calls:

• You should enclose your code in if ( OivDepthPeel(gl_FragCoord.xyz) ) { } condition
• You should output your color using OivDepthPeelingOutputColor() method.

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Functions
bool	OivDepthPeel (vec3 fragmentCoords)

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Detailed Description

To properly handle transparency, your fragment shader should contains the following function calls:

• You should enclose your code in if ( OivDepthPeel(gl_FragCoord.xyz) ) { } condition
• You should output your color using OivDepthPeelingOutputColor() method.

These methods are accessible by including the <Inventor/oivDepthPeeling_frag.h> header in your shader: Ex:

 void main()
 {
   if ( OivDepthPeel(gl_FragCoord.xyz) )
   {
     Vec4 color = vec4(1, 0, 0, 0.5);
     OivDepthPeelingOutputColor(color);
   }
 }

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Function Documentation

bool OivDepthPeel

(

vec3

fragmentCoords

)

This method peels the current fragment.

If the fragment must be ignored, this method does the discard. The fragment coords must be in screen space (gl_FragCoord.xyz should always be used)

Returns true if the fragment should be shaded.