Add leenkx/Shaders/std/aabb.glsl

leenkx/Shaders/std/aabb.glsl

@@ -0,0 +1,18 @@
+#ifndef _AABB_GLSL
+#define _AABB_GLSL
+
+bool IntersectAABB(vec3[2] a, vec3[2] b) {
+    const float EPSILON = 0.001; // Small tolerance to prevent false negatives
+    if (abs(a[0].x - b[0].x) > (a[1].x + b[1].x + EPSILON)) return false;
+    if (abs(a[0].y - b[0].y) > (a[1].y + b[1].y + EPSILON)) return false;
+    if (abs(a[0].z - b[0].z) > (a[1].z + b[1].z + EPSILON)) return false;
+    return true;
+}
+
+void AABBfromMinMax(inout vec3[2] aabb, vec3 _min, vec3 _max)
+{
+	aabb[0] = (_min + _max) * 0.5f;
+	aabb[1] = abs(_max - aabb[0]);
+}
+
+#endif