Skip to content

Merge adjacent padding bits in bitflag structs into ints - #272

Merged
Snektron merged 3 commits into
Snektron:masterfrom
Enator18:merge_padding_bits
Nov 3, 2026
Merged

Snektron merged 3 commits into
Snektron:masterfrom
Enator18:merge_padding_bits

Conversation

@Enator18

@Enator18 Enator18 commented Nov 3, 2026

Copy link
Copy Markdown
Contributor

If there are multiple adjacent padding bits in a bitflag packed struct, they instead get merged into a single int.

Example:

pub const ShaderStageFlags = packed struct(Flags) {
    vertex: bool = false,
    tessellation_control: bool = false,
    tessellation_evaluation: bool = false,
    geometry: bool = false,
    fragment: bool = false,
    compute: bool = false,
    task_ext: bool = false,
    mesh_ext: bool = false,
    raygen_khr: bool = false,
    any_hit_khr: bool = false,
    closest_hit_khr: bool = false,
    miss_khr: bool = false,
    intersection_khr: bool = false,
    callable_khr: bool = false,
    subpass_shading_huawei: bool = false,
    _reserved_bits_15_to_18: u4 = 0,
    cluster_culling_huawei: bool = false,
    _reserved_bits_20_to_31: u12 = 0,
    pub const toInt = FlagsMixin(ShaderStageFlags).toInt;
    pub const fromInt = FlagsMixin(ShaderStageFlags).fromInt;
    pub const merge = FlagsMixin(ShaderStageFlags).merge;
    pub const intersect = FlagsMixin(ShaderStageFlags).intersect;
    pub const complement = FlagsMixin(ShaderStageFlags).complement;
    pub const subtract = FlagsMixin(ShaderStageFlags).subtract;
    pub const contains = FlagsMixin(ShaderStageFlags).contains;
    pub const format = FlagFormatMixin(ShaderStageFlags).format;
};

@Snektron
Snektron merged commit e82bb8a into Snektron:master Nov 3, 2026
1 check passed
@Snektron

Snektron commented Nov 3, 2026

Copy link
Copy Markdown
Owner

Thanks!

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Labels

None yet

Projects

None yet

Development

Successfully merging this pull request may close these issues.

2 participants