diff options
Diffstat (limited to 'intern/cycles/kernel/kernel_volume.h')
| -rw-r--r-- | intern/cycles/kernel/kernel_volume.h | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/intern/cycles/kernel/kernel_volume.h b/intern/cycles/kernel/kernel_volume.h index 3274e05f98e..058e7dccafd 100644 --- a/intern/cycles/kernel/kernel_volume.h +++ b/intern/cycles/kernel/kernel_volume.h @@ -106,8 +106,21 @@ ccl_device bool volume_stack_is_heterogeneous(KernelGlobals *kg, ccl_addr_space for(int i = 0; stack[i].shader != SHADER_NONE; i++) { int shader_flag = kernel_tex_fetch(__shader_flag, (stack[i].shader & SHADER_MASK)*SHADER_SIZE); - if(shader_flag & SD_HETEROGENEOUS_VOLUME) + if(shader_flag & SD_HETEROGENEOUS_VOLUME) { return true; + } + else if(shader_flag & SD_NEED_ATTRIBUTES) { + /* We want to render world or objects without any volume grids + * as homogenous, but can only verify this at runtime since other + * heterogenous volume objects may be using the same shader. */ + int object = stack[i].object; + if(object != OBJECT_NONE) { + int object_flag = kernel_tex_fetch(__object_flag, object); + if(object_flag & SD_OBJECT_HAS_VOLUME_ATTRIBUTES) { + return true; + } + } + } } return false; |