diff options
Diffstat (limited to 'intern/cycles/kernel/kernel_light.h')
| -rw-r--r-- | intern/cycles/kernel/kernel_light.h | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/intern/cycles/kernel/kernel_light.h b/intern/cycles/kernel/kernel_light.h index d918abed381..04472212d0c 100644 --- a/intern/cycles/kernel/kernel_light.h +++ b/intern/cycles/kernel/kernel_light.h @@ -249,13 +249,13 @@ ccl_device float3 background_map_sample(KernelGlobals *kg, float randu, float ra float u = (index_u + du) / res_x; /* compute pdf */ - float denom = cdf_last_u.x * cdf_last_v.x; float sin_theta = sinf(M_PI_F * v); + float denom = (M_2PI_F * M_PI_F * sin_theta) * cdf_last_u.x * cdf_last_v.x; if (sin_theta == 0.0f || denom == 0.0f) *pdf = 0.0f; else - *pdf = (cdf_u.x * cdf_v.x) / (M_2PI_F * M_PI_F * sin_theta * denom); + *pdf = (cdf_u.x * cdf_v.x) / denom; /* compute direction */ return equirectangular_to_direction(u, v); @@ -284,7 +284,7 @@ ccl_device float background_map_pdf(KernelGlobals *kg, float3 direction) index_v * cdf_width + res_x); float2 cdf_last_v = kernel_tex_fetch(__light_background_marginal_cdf, res_y); - float denom = cdf_last_u.x * cdf_last_v.x; + float denom = (M_2PI_F * M_PI_F * sin_theta) * cdf_last_u.x * cdf_last_v.x; if (denom == 0.0f) return 0.0f; @@ -294,7 +294,7 @@ ccl_device float background_map_pdf(KernelGlobals *kg, float3 direction) index_v * cdf_width + index_u); float2 cdf_v = kernel_tex_fetch(__light_background_marginal_cdf, index_v); - return (cdf_u.x * cdf_v.x) / (M_2PI_F * M_PI_F * sin_theta * denom); + return (cdf_u.x * cdf_v.x) / denom; } ccl_device_inline bool background_portal_data_fetch_and_check_side( |