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billboard particles based on their actual positions

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HifiExperiments 2023-12-01 23:05:27 -08:00
parent 78bc24cb22
commit dfad009805
1 changed files with 3 additions and 3 deletions
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6
libraries/entities-renderer/src/textured_particle.slv
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@ -152,9 +152,9 @@ void main(void) {
<$transformModelToWorldDir(cam, obj, UP, modelUpWorld)$>
vec3 upWorld = mix(UP, normalize(modelUpWorld), float(particle.rotateWithEntity));
vec3 upEye = normalize(view3 * upWorld);
vec3 FORWARD = vec3(0, 0, -1);
vec3 particleRight = normalize(cross(FORWARD, upEye));
vec3 particleUp = cross(particleRight, FORWARD); // don't need to normalize
vec3 eyeToParticle = normalize(anchorPoint.xyz - vec3(0.0));
vec3 particleRight = cross(eyeToParticle, upEye);
vec3 particleUp = cross(particleRight, eyeToParticle); // don't need to normalize
// This ordering ensures that un-rotated particles render upright in the viewer.
vec3 UNIT_QUAD[NUM_VERTICES_PER_PARTICLE] = vec3[NUM_VERTICES_PER_PARTICLE](
normalize(-particleRight + particleUp),