Add repro case for sdf generation

gkjohnson · Sep 29, 2024 · d613dc0 · d613dc0
1 parent 6a8e732
commit d613dc0
Showing 1 changed file with 13 additions and 2 deletions.
diff --git a/example/utils/GenerateSDFMaterial.js b/example/utils/GenerateSDFMaterial.js
@@ -7,6 +7,12 @@ export class GenerateSDFMaterial extends ShaderMaterial {
 
  super( {
 
+ defines: {
+
+ USE_SHADER_RAYCAST: window.location.hash.includes( 'USE_SHADER_RAYCAST' ) ? 1 : 0,
+
+ },
+
  uniforms: {
 
  matrix: { value: new Matrix4() },
@@ -60,8 +66,13 @@ export class GenerateSDFMaterial extends ShaderMaterial {
  vec3 outPoint;
  float dist = bvhClosestPointToPoint( bvh, point.xyz, faceIndices, faceNormal, barycoord, side, outPoint );
 
- // side = 1.0;
- // bvhIntersectFirstHit( bvh, point.xyz, vec3( 0.0, 0.0, 1.0 ), faceIndices, faceNormal, barycoord, side, rayDist );
+ // This currently causes issues on some devices when rendering to 3d textures and texture arrays
+ #if USE_SHADER_RAYCAST
+
+ side = 1.0;
+ bvhIntersectFirstHit( bvh, point.xyz, vec3( 0.0, 0.0, 1.0 ), faceIndices, faceNormal, barycoord, side, rayDist );
+
+ #endif
 
  // if the triangle side is the back then it must be on the inside and the value negative
  gl_FragColor = vec4( side * dist, 0, 0, 0 );