Trait vulkano::image::traits::ImageAccess [−] [src]

pub unsafe trait ImageAccess {
    fn inner(&self) -> ImageInner;

    fn initial_layout_requirement(&self) -> ImageLayout;

    fn final_layout_requirement(&self) -> ImageLayout;

    fn conflict_key(
        &self, 
        first_layer: u32, 
        num_layers: u32, 
        first_mipmap: u32, 
        num_mipmaps: u32
    ) -> u64;

    fn try_gpu_lock(
        &self, 
        exclusive_access: bool, 
        queue: &Queue
    ) -> Result<(), AccessError>;

    unsafe fn increase_gpu_lock(&self);

    unsafe fn unlock(&self);

    fn format(&self) -> Format { ... }

    fn has_color(&self) -> bool { ... }

    fn has_depth(&self) -> bool { ... }

    fn has_stencil(&self) -> bool { ... }

    fn mipmap_levels(&self) -> u32 { ... }

    fn samples(&self) -> u32 { ... }

    fn dimensions(&self) -> ImageDimensions { ... }

    fn supports_blit_source(&self) -> bool { ... }

    fn supports_blit_destination(&self) -> bool { ... }

    unsafe fn forced_undefined_initial_layout(
        self, 
        preinitialized: bool
    ) -> ImageAccessFromUndefinedLayout<Self>
    where
        Self: Sized,
    { ... }

    fn conflicts_buffer(
        &self, 
        self_first_layer: u32, 
        self_num_layers: u32, 
        self_first_mipmap: u32, 
        self_num_mipmaps: u32, 
        other: &BufferAccess, 
        other_offset: usize, 
        other_size: usize
    ) -> bool { ... }

    fn conflicts_image(
        &self, 
        self_first_layer: u32, 
        self_num_layers: u32, 
        self_first_mipmap: u32, 
        self_num_mipmaps: u32, 
        other: &ImageAccess, 
        other_first_layer: u32, 
        other_num_layers: u32, 
        other_first_mipmap: u32, 
        other_num_mipmaps: u32
    ) -> bool { ... }

    fn conflicts_buffer_all(&self, other: &BufferAccess) -> bool { ... }

    fn conflicts_image_all(&self, other: &ImageAccess) -> bool { ... }

    fn conflict_key_all(&self) -> u64 { ... }
}

Trait for types that represent the way a GPU can access an image.

Required Methods

Returns the inner unsafe image object used by this image.

Returns the layout that the image has when it is first used in a primary command buffer.

The first time you use an image in an AutoCommandBufferBuilder, vulkano will suppose that the image is in the layout returned by this function. Later when the command buffer is submitted vulkano will check whether the image is actually in this layout, and if it is not the case then an error will be returned. TODO: ^ that check is not yet implemented

Returns the layout that the image must be returned to before the end of the command buffer.

When an image is used in an AutoCommandBufferBuilder vulkano will automatically transition this image to the layout returned by this function at the end of the command buffer, if necessary.

Except for special cases, this value should likely be the same as the one returned by initial_layout_requirement so that the user can submit multiple command buffers that use this image one after the other.

Returns a key that uniquely identifies the range given by first_layer/num_layers/first_mipmap/num_mipmaps.

Two ranges that potentially overlap in memory should return the same key.

The key is shared amongst all buffers and images, which means that you can make several different image objects share the same memory, or make some image objects share memory with buffers, as long as they return the same key.

Since it is possible to accidentally return the same key for memory ranges that don't overlap, the conflicts_image or conflicts_buffer function should always be called to verify whether they actually overlap.

Locks the resource for usage on the GPU. Returns an error if the lock can't be acquired.

This function exists to prevent the user from causing a data race by reading and writing to the same resource at the same time.

If you call this function, you should call unlock() once the resource is no longer in use by the GPU. The implementation is not expected to automatically perform any unlocking and can rely on the fact that unlock() is going to be called.

Locks the resource for usage on the GPU. Supposes that the resource is already locked, and simply increases the lock by one.

Must only be called after try_gpu_lock() succeeded.

If you call this function, you should call unlock() once the resource is no longer in use by the GPU. The implementation is not expected to automatically perform any unlocking and can rely on the fact that unlock() is going to be called.

Unlocks the resource previously acquired with try_gpu_lock or increase_gpu_lock.

Safety

Must only be called once per previous lock.

Provided Methods

Returns the format of this image.

Returns true if the image is a color image.

Returns true if the image has a depth component. In other words, if it is a depth or a depth-stencil format.

Returns true if the image has a stencil component. In other words, if it is a stencil or a depth-stencil format.

Returns the number of mipmap levels of this image.

Returns the number of samples of this image.

Returns the dimensions of the image.

Returns true if the image can be used as a source for blits.

Returns true if the image can be used as a destination for blits.

Wraps around this ImageAccess and returns an identical ImageAccess but whose initial layout requirement is either Undefined or Preinitialized.

Returns true if an access to self (as defined by self_first_layer, self_num_layers, self_first_mipmap and self_num_mipmaps) potentially overlaps the same memory as an access to other (as defined by other_offset and other_size).

If this function returns false, this means that we are allowed to access the offset/size of self at the same time as the offset/size of other without causing a data race.

Note that the function must be transitive. In other words if conflicts(a, b) is true and conflicts(b, c) is true, then conflicts(a, c) must be true as well.

Returns true if an access to self (as defined by self_first_layer, self_num_layers, self_first_mipmap and self_num_mipmaps) potentially overlaps the same memory as an access to other (as defined by other_first_layer, other_num_layers, other_first_mipmap and other_num_mipmaps).

If this function returns false, this means that we are allowed to access the offset/size of self at the same time as the offset/size of other without causing a data race.

Note that the function must be transitive. In other words if conflicts(a, b) is true and conflicts(b, c) is true, then conflicts(a, c) must be true as well.

Shortcut for conflicts_buffer that compares the whole buffer to another.

Shortcut for conflicts_image that compares the whole buffer to a whole image.

Shortcut for conflict_key that grabs the key of the whole buffer.

Implementors