diff options
Diffstat (limited to 'intern/cycles/kernel/kernel_light.h')
| -rw-r--r-- | intern/cycles/kernel/kernel_light.h | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/intern/cycles/kernel/kernel_light.h b/intern/cycles/kernel/kernel_light.h index aa125180a94..42260577069 100644 --- a/intern/cycles/kernel/kernel_light.h +++ b/intern/cycles/kernel/kernel_light.h @@ -120,13 +120,9 @@ __device float3 background_light_sample(KernelGlobals *kg, float randu, float ra float du = (randu - cdf_u.y) / (cdf_next_u.y - cdf_u.y); float u = (index_u + du) / res; - /* spherical coordinates */ - float theta = v * M_PI_F; - float phi = u * M_PI_F * 2.0f; - /* compute pdf */ float denom = cdf_last_u.x * cdf_last_v.x; - float sin_theta = sinf(theta); + float sin_theta = sinf(M_PI_F * v); if(sin_theta == 0.0f || denom == 0.0f) *pdf = 0.0f; @@ -136,7 +132,7 @@ __device float3 background_light_sample(KernelGlobals *kg, float randu, float ra *pdf *= kernel_data.integrator.pdf_lights; /* compute direction */ - return spherical_to_direction(theta, phi); + return -equirectangular_to_direction(u, v); } __device float background_light_pdf(KernelGlobals *kg, float3 direction) |