diff options
| author | Patrick Mours <pmours@nvidia.com> | 2019-08-21 13:03:32 +0300 |
|---|---|---|
| committer | Brecht Van Lommel <brechtvanlommel@gmail.com> | 2019-08-26 11:26:53 +0300 |
| commit | edbb755dfe54f929c08aa6ec77c134462581fbfe (patch) | |
| tree | 9328ae9818f7d55f7e9f5a19a74187bde941784c /intern/cycles/kernel/kernel_volume.h | |
| parent | b05e7ea7197ca4b66f74359a8e43e6a0b419de2d (diff) | |
Cycles: tweaks for better GPU code generation
Uninitialized variables are harder to handle for the compiler.
Ref D5363
Diffstat (limited to 'intern/cycles/kernel/kernel_volume.h')
| -rw-r--r-- | intern/cycles/kernel/kernel_volume.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/intern/cycles/kernel/kernel_volume.h b/intern/cycles/kernel/kernel_volume.h index 20914b0ee4d..b0b67efc7b2 100644 --- a/intern/cycles/kernel/kernel_volume.h +++ b/intern/cycles/kernel/kernel_volume.h @@ -187,7 +187,7 @@ ccl_device void kernel_volume_shadow_homogeneous(KernelGlobals *kg, ShaderData *sd, float3 *throughput) { - float3 sigma_t; + float3 sigma_t = make_float3(0.0f, 0.0f, 0.0f); if (volume_shader_extinction_sample(kg, sd, state, ray->P, &sigma_t)) *throughput *= volume_color_transmittance(sigma_t, ray->t); @@ -225,7 +225,7 @@ ccl_device void kernel_volume_shadow_heterogeneous(KernelGlobals *kg, } float3 new_P = ray->P + ray->D * (t + step_offset); - float3 sigma_t; + float3 sigma_t = make_float3(0.0f, 0.0f, 0.0f); /* compute attenuation over segment */ if (volume_shader_extinction_sample(kg, sd, state, new_P, &sigma_t)) { @@ -621,6 +621,7 @@ kernel_volume_integrate_heterogeneous_distance(KernelGlobals *kg, new_tp = tp * transmittance; } else { + transmittance = make_float3(0.0f, 0.0f, 0.0f); new_tp = tp; } |