Function cmd_push_constants 

pub unsafe fn cmd_push_constants(
    device: &Device,
    command_buffer: CommandBuffer,
    layout: PipelineLayout,
    stage_flags: ShaderStageFlags,
    offset: u32,
    values: &[u8],
) -> Result<(), CallError>

Call vkCmdPushConstants using this context’s cached function pointer.

Errors

Reports a missing command, invalid slice lengths/counts or a native error.

Safety

The context and all handles must be live and belong to the same Vulkan implementation/device. Meet vkCmdPushConstants valid usage, enabled API/extension/feature, pointer-chain lifetime, callback compatibility and host/GPU synchronization requirements. Native resources require explicit destruction after completion.

Byte slices determine native byte counts. The caller must also satisfy the command’s data alignment, format, size-multiple and stride requirements; a byte slice alone does not establish those properties.

Khronos reference: vkCmdPushConstants