clara/bluenoise-raytracer
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Merge pull request #56 from MouseChannel/fix_cos_weight_pdf

Browse source 
(fix)fix cos_weight pdf
This commit is contained in:
Neil Bickford 2023-05-23 14:40:32 -07:00 • committed by GitHub
commit c436c46141
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
1 changed files with 5 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

9
ray_tracing_gltf/shaders/pathtrace.rchit
View file

@ -110,12 +110,13 @@ void main()
vec3 rayOrigin = world_position;
vec3 rayDirection = samplingHemisphere(prd.seed, tangent, bitangent, world_normal);
// Probability of the newRay (cosine distributed)
const float p = 1 / M_PI;
// Compute the BRDF for this ray (assuming Lambertian reflection)
float cos_theta = dot(rayDirection, world_normal);
vec3 albedo = mat.pbrBaseColorFactor.xyz;
// Probability of the newRay (cosine distributed)
const float p = cos_theta / M_PI;
vec3 albedo = mat.pbrBaseColorFactor.xyz;
if(mat.pbrBaseColorTexture > -1)
{
uint txtId = mat.pbrBaseColorTexture;