Struct vulkano::render_pass::SubpassDependencyDesc [−][src]
pub struct SubpassDependencyDesc {
pub source_subpass: usize,
pub destination_subpass: usize,
pub source_stages: PipelineStages,
pub destination_stages: PipelineStages,
pub source_access: AccessFlags,
pub destination_access: AccessFlags,
pub by_region: bool,
}
Expand description
Describes a dependency between two subpasses of a render pass.
The implementation is allowed to change the order of the subpasses within a render pass, unless you specify that there exists a dependency between two subpasses (ie. the result of one will be used as the input of another one).
Fields
source_subpass: usize
Index of the subpass that writes the data that destination_subpass
is going to use.
destination_subpass: usize
Index of the subpass that reads the data that source_subpass
wrote.
source_stages: PipelineStages
The pipeline stages that must be finished on the previous subpass before the destination subpass can start.
destination_stages: PipelineStages
The pipeline stages of the destination subpass that must wait for the source to be finished. Stages that are earlier of the stages specified here can start before the source is finished.
source_access: AccessFlags
The way the source subpass accesses the attachments on which we depend.
destination_access: AccessFlags
The way the destination subpass accesses the attachments on which we depend.
by_region: bool
If false, then the whole subpass must be finished for the next one to start. If true, then the implementation can start the new subpass for some given pixels as long as the previous subpass is finished for these given pixels.
In other words, if the previous subpass has some side effects on other parts of an attachment, then you should set it to false.
Passing false
is always safer than passing true
, but in practice you rarely need to
pass false
.
Trait Implementations
Auto Trait Implementations
impl RefUnwindSafe for SubpassDependencyDesc
impl Send for SubpassDependencyDesc
impl Sync for SubpassDependencyDesc
impl Unpin for SubpassDependencyDesc
impl UnwindSafe for SubpassDependencyDesc
Blanket Implementations
Mutably borrows from an owned value. Read more
Builds a pointer to this type from a raw pointer.
Returns true if the size is suitable to store a type like this.
Returns the size of an individual element.