Struct ShadowMapPass 

pub struct ShadowMapPass {
    pub shadow_bind_group_layout: BindGroupLayout,
    /* private fields */
}

Shadow map render resources.

Fields

shadow_bind_group_layout: BindGroupLayout

Bind group layout for consumers (ground plane shader).

Implementations

impl ShadowMapPass

pub fn new(device: &Device) -> Self

Creates a new shadow map pass.

pub fn compute_light_matrix( scene_center: Vec3, scene_radius: f32, light_dir: Vec3, ) -> Mat4

Computes the light view-projection matrix for shadow mapping.

Creates an orthographic projection from the light’s perspective that encompasses the scene.

pub fn update_light(&self, queue: &Queue, view_proj: Mat4, light_dir: Vec3)

Updates the light uniforms.

pub fn begin_shadow_pass<'a>( &'a self, encoder: &'a mut CommandEncoder, ) -> RenderPass<'a>

Clears the shadow map depth buffer.

Call this before rendering scene objects to the shadow map.

pub fn depth_view(&self) -> &TextureView

Returns the shadow map depth view.

pub fn light_buffer(&self) -> &Buffer

Returns the light uniform buffer.

pub fn comparison_sampler(&self) -> &Sampler

Returns the comparison sampler.

pub fn shadow_bind_group(&self) -> &BindGroup

Returns the bind group for shadow sampling.

pub fn shadow_bind_group_layout(&self) -> &BindGroupLayout

Returns the bind group layout for shadow sampling.