From a3f315c81bc782ef75ee2cecfc47d136db6d4a54 Mon Sep 17 00:00:00 2001 From: William Deurwaarder Date: Fri, 15 Oct 2021 15:19:43 +0200 Subject: GPULightmapper: increase ray triangle hit rate Currently the method ray_hits_triangle determines triangles not to be hit by a ray due to an epsilon that is too big. In practice those triangles are hit by those rays. This is fixed by introducing a smaller epsilon. --- modules/lightmapper_rd/lm_compute.glsl | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'modules/lightmapper_rd') diff --git a/modules/lightmapper_rd/lm_compute.glsl b/modules/lightmapper_rd/lm_compute.glsl index 6e5c9f25ba..158cd960c4 100644 --- a/modules/lightmapper_rd/lm_compute.glsl +++ b/modules/lightmapper_rd/lm_compute.glsl @@ -94,13 +94,14 @@ params; //check it, but also return distance and barycentric coords (for uv lookup) bool ray_hits_triangle(vec3 from, vec3 dir, float max_dist, vec3 p0, vec3 p1, vec3 p2, out float r_distance, out vec3 r_barycentric) { + const float EPSILON = 0.00001; const vec3 e0 = p1 - p0; const vec3 e1 = p0 - p2; vec3 triangle_normal = cross(e1, e0); float n_dot_dir = dot(triangle_normal, dir); - if (abs(n_dot_dir) < 0.01) { + if (abs(n_dot_dir) < EPSILON) { return false; } -- cgit v1.2.3