vvizBlending_frag.h

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/*=======================================================================
** Author      : VSG (MMM YYYY)
**=======================================================================*/
 
#ifndef VVIZBLENDING_FRAG_H
#define VVIZBLENDING_FRAG_H
 
/* Returns true if src should ne considered as first hit (used to set depth of pixel) */
bool VVizIsFirstBlend(in bool hasHit,in vec4 dest, in vec4 src);
 
/* Return true if alpha should be considered as first hitBoundary (regardingopacityThreshold) */
bool VVizIsFirstBoundary(in bool hasHitBoundary, in float curStep, in float alpha);
 
/* Returns true if calling VVizBlendEquation(dest,src) would impact result */
bool VVizHasBlendImpact(in vec4 dest, in vec4 src);
 
/* Returns the color resulting of dest and src blending */
vec4 VVizBlendEquation(in vec4 dest, in vec4 src);
 
/* Return true if dest cannot be blend more (used to stop raycast) */
bool VVizBlendMaxReached(in vec4 dest);
 
#endif