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Packages › bevy_pbr › environment_map.wgsl

Constants

FLOAT_MAX

#
Used by 2 shaders in bevy_pbr 0.19.1
const FLOAT_MAX: f32 = 3.40282347e+38

Structures

EnvironmentMapLight

#
Used by 2 shaders in bevy_pbr 0.19.1
struct EnvironmentMapLight {
diffuse: vec3<f32>,
specular: vec3<f32>,
}

EnvironmentMapRadiances

#
Used by 2 shaders in bevy_pbr 0.19.1
struct EnvironmentMapRadiances {
irradiance: vec3<f32>,
radiance: vec3<f32>,
}

MultiscatterResult

#
Used by 2 shaders in bevy_pbr 0.19.1
struct MultiscatterResult {
FssEss: vec3<f32>,
FmsEms: vec3<f32>,
Edss: vec3<f32>,
}

Functions

compute_cubemap_sample_dir

#
Used by 2 shaders in bevy_pbr 0.19.1
  • parallax_correct is true if parallax correction is to be applied and false otherwise.
fn compute_cubemap_sample_dir (
world_ray_origin: vec3<f32>,
world_ray_direction: vec3<f32>,
light_from_world: mat4x4<f32>,
parallax_correction_bounds: vec3<f32>,
parallax_correct: bool,
view_rotation: vec4<f32>
) -> vec3<f32>

compute_radiances

#
Used by 2 shaders in bevy_pbr 0.19.1
Active when
MULTIPLE_LIGHT_PROBES_IN_ARRAY
fn compute_radiances (
input: LayerLightingInput,
clusterable_object_index_ranges: ptr<function, ClusterableObjectIndexRanges>,
world_position: vec3<f32>,
found_diffuse_indirect: bool
) -> EnvironmentMapRadiances
Active when
!MULTIPLE_LIGHT_PROBES_IN_ARRAY
fn compute_radiances (
input: LayerLightingInput,
clusterable_object_index_ranges: ptr<function, ClusterableObjectIndexRanges>,
world_position: vec3<f32>,
found_diffuse_indirect: bool
) -> EnvironmentMapRadiances

environment_map_light_clearcoat

#
Used by 2 shaders in bevy_pbr 0.19.1
Active when
STANDARD_MATERIAL_CLEARCOAT

Adds the environment map light from the clearcoat layer to that of the base layer.

fn environment_map_light_clearcoat (
out: ptr<function, EnvironmentMapLight>,
input: ptr<function, LightingInput>,
clusterable_object_index_ranges: ptr<function, ClusterableObjectIndexRanges>,
found_diffuse_indirect: bool
)

compute_multiscatter

#
Used by 2 shaders in bevy_pbr 0.19.1

We initially used this (https://bruop.github.io/ibl) reference with Roughness Dependent Fresnel, but it made fresnel very bright so we reverted to the “typical” fresnel term.

fn compute_multiscatter (
F0: vec3<f32>,
F_ab: vec2<f32>,
Ems: f32,
specular_occlusion: f32
) -> MultiscatterResult

environment_map_light

#
Used by 2 shaders in bevy_pbr 0.19.1
fn environment_map_light (
input: ptr<function, LightingInput>,
clusterable_object_index_ranges: ptr<function, ClusterableObjectIndexRanges>,
found_diffuse_indirect: bool
) -> EnvironmentMapLight

radiance_sample_direction

#
Used by 2 shaders in bevy_pbr 0.19.1

“Moving Frostbite to Physically Based Rendering 3.0”, listing 22 https://seblagarde.wordpress.com/wp-content/uploads/2015/07/course_notes_moving_frostbite_to_pbr_v32.pdf#page=70

fn radiance_sample_direction (
N: vec3<f32>,
R: vec3<f32>,
roughness: f32
) -> vec3<f32>

quat_rotate

#
Used by 2 shaders in bevy_pbr 0.19.1
fn quat_rotate (
q: vec4<f32>,
dir: vec3<f32>
) -> vec3<f32>
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