Struct naga::back::spv::image::Load

struct Load {
    opcode: Op,
    type_id: Word,
    image_id: Word,
}

Texel access information for an ImageLoad expression.

Fields

opcode: Op

The specific opcode we’ll use to perform the fetch. Storage images require OpImageRead, while sampled images require OpImageFetch.

type_id: Word

The type id produced by the actual image access instruction.

image_id: Word

The id of the image being accessed.

Implementations

impl Load

fn from_image_expr( ctx: &mut BlockContext<'_>, image_id: Word, image_class: ImageClass, result_type_id: Word, ) -> Result<Load, Error>

Trait Implementations

impl Access for Load

fn generate( &self, id_gen: &mut IdGenerator, coordinates_id: Word, level_id: Option<Word>, sample_id: Option<Word>, block: &mut Block, ) -> Word

Write an instruction to access a given texel of this image.

type Output = u32

The Rust type that represents SPIR-V values and types for this access.

fn result_type(&self) -> Word

Return the SPIR-V type of the value produced by the code written by generate. If the access does not produce a value, Self::Output should be ().

fn out_of_bounds_value(&self, ctx: &mut BlockContext<'_>) -> Word

Construct the SPIR-V ‘zero’ value to be returned for an out-of-bounds access under the ReadZeroSkipWrite policy. If the access does not produce a value, Self::Output should be ().