Struct three_d::core::buffer::UniformBuffer

pub struct UniformBuffer { /* fields omitted */ }

A buffer for transferring a set of uniform variables to the shader program (see also use_uniform_block).

Implementations

impl UniformBuffer

pub fn new(context: &Context, sizes: &[u32]) -> ThreeDResult<UniformBuffer>

Creates a new uniform buffer with room for a set of variables of varying length defined by the sizes argument. So for example if you create a uniform buffer with &[3, 1, 4, 16] as the sizes argument, you will have a uniform buffer that has four variables: The first with 3 elements (a Vec3), the second with 1 element (a f32), the third with four elements (a Vec4) and the last with 16 elements (a Mat4). The variables are initialized to 0.

pub fn update(&mut self, index: u32, data: &[f32]) -> ThreeDResult<()>

Update the values of the variable at the given index with the given data.

Errors

Will return an error if the index is not in the range [0-max] where max is the length of the sizes argument given at construction. Will return an error if the data length does not match the element count of the variable (defined at construction) at the given index.

pub fn get(&self, index: u32) -> ThreeDResult<&[f32]>

Returns the values of the variable at the given index.

Errors

Will return an error if the index is not in the range [0-max] where max is the length of the sizes argument given at construction.

Trait Implementations

impl Drop for UniformBuffer

fn drop(&mut self)

Executes the destructor for this type.