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Packages › bevy_core_pipeline › tonemapping_shared.wgsl

Constants

LEVEL_MARGIN

#
Used by 4 shaders in bevy_sprite_render 0.19.1
const LEVEL_MARGIN: f32 = 0.1

LEVEL_MARGIN_DIV

#
Used by 4 shaders in bevy_sprite_render 0.19.1
const LEVEL_MARGIN_DIV: f32 = 0.5 / LEVEL_MARGIN

TONY_MC_MAPFACE_LUT_DIMS

#
Used by 4 shaders in bevy_sprite_render 0.19.1
const TONY_MC_MAPFACE_LUT_DIMS: f32 = 48.0

Functions

sample_current_lut

#
Used by 4 shaders in bevy_sprite_render 0.19.1
fn sample_current_lut (
p: vec3<f32>
) -> vec3<f32>

rgb_to_ycbcr

#
Used by 4 shaders in bevy_sprite_render 0.19.1
fn rgb_to_ycbcr (
col: vec3<f32>
) -> vec3<f32>

tonemap_curve

#
Used by 4 shaders in bevy_sprite_render 0.19.1
fn tonemap_curve (
v: f32
) -> f32

tonemap_curve3_

#
Used by 4 shaders in bevy_sprite_render 0.19.1
fn tonemap_curve3_ (
v: vec3<f32>
) -> vec3<f32>

somewhat_boring_display_transform

#
Used by 4 shaders in bevy_sprite_render 0.19.1
fn somewhat_boring_display_transform (
col: vec3<f32>
) -> vec3<f32>

sample_tony_mc_mapface_lut

#
Used by 4 shaders in bevy_sprite_render 0.19.1
fn sample_tony_mc_mapface_lut (
stimulus: vec3<f32>
) -> vec3<f32>

RRTAndODTFit

#
Used by 4 shaders in bevy_sprite_render 0.19.1
fn RRTAndODTFit (
v: vec3<f32>
) -> vec3<f32>

ACESFitted

#
Used by 4 shaders in bevy_sprite_render 0.19.1
fn ACESFitted (
color: vec3<f32>
) -> vec3<f32>

saturation

#
Used by 4 shaders in bevy_sprite_render 0.19.1

Increase color saturation of the given color data. :param color: expected sRGB primaries input :param saturationAmount: expected 0-1 range with 1=neutral, 0=no saturation. – ref[2] [4]

fn saturation (
color: vec3<f32>,
saturationAmount: f32
) -> vec3<f32>

convertOpenDomainToNormalizedLog2_

#
Used by 4 shaders in bevy_sprite_render 0.19.1

Output log domain encoded data. Similar to OCIO lg2 AllocationTransform. ref[0]

fn convertOpenDomainToNormalizedLog2_ (
color: vec3<f32>,
minimum_ev: f32,
maximum_ev: f32
) -> vec3<f32>

convertNormalizedLog2ToOpenDomain

#
Used by 4 shaders in bevy_sprite_render 0.19.1

Inverse of above

fn convertNormalizedLog2ToOpenDomain (
color: vec3<f32>,
minimum_ev: f32,
maximum_ev: f32
) -> vec3<f32>

applyAgXLog

#
Used by 4 shaders in bevy_sprite_render 0.19.1

Prepare the data for display encoding. Converted to log domain.

fn applyAgXLog (
Image: vec3<f32>
) -> vec3<f32>

applyLUT3D

#
Used by 4 shaders in bevy_sprite_render 0.19.1
fn applyLUT3D (
Image: vec3<f32>,
block_size: f32
) -> vec3<f32>

sample_blender_filmic_lut

#
Used by 4 shaders in bevy_sprite_render 0.19.1
fn sample_blender_filmic_lut (
stimulus: vec3<f32>
) -> vec3<f32>

tonemapping_reinhard

#
Used by 4 shaders in bevy_sprite_render 0.19.1

from https://64.github.io/tonemapping/ reinhard on RGB oversaturates colors

fn tonemapping_reinhard (
color: vec3<f32>
) -> vec3<f32>

tonemapping_luminance

#
Used by 10 shaders

luminance coefficients from Rec. 709. https://en.wikipedia.org/wiki/Rec._709

fn tonemapping_luminance (
v: vec3<f32>
) -> f32

tonemapping_change_luminance

#
Used by 4 shaders in bevy_sprite_render 0.19.1
fn tonemapping_change_luminance (
c_in: vec3<f32>,
l_out: f32
) -> vec3<f32>

tonemapping_reinhard_luminance

#
Used by 4 shaders in bevy_sprite_render 0.19.1
fn tonemapping_reinhard_luminance (
color: vec3<f32>
) -> vec3<f32>

rgb_to_srgb_simple

#
Used by 4 shaders in bevy_sprite_render 0.19.1
fn rgb_to_srgb_simple (
color: vec3<f32>
) -> vec3<f32>

tonemapping_pbr_neutral

#
Used by 4 shaders in bevy_sprite_render 0.19.1

PBR Neutral tone mapping https://github.com/KhronosGroup/ToneMapping/blob/main/PBR_Neutral/pbrNeutral.glsl Adapted under Apache 2.0, per https://github.com/KhronosGroup/ToneMapping/tree/main/LICENSES

fn tonemapping_pbr_neutral (
color_in: vec3<f32>
) -> vec3<f32>

screen_space_dither

#
Used by 6 shaders

Source: Advanced VR Rendering, GDC 2015, Alex Vlachos, Valve, Slide 49 https://media.steampowered.com/apps/valve/2015/Alex_Vlachos_Advanced_VR_Rendering_GDC2015.pdf

fn screen_space_dither (
frag_coord: vec2<f32>
) -> vec3<f32>

sectional_color_grading

#
Used by 4 shaders in bevy_sprite_render 0.19.1

Performs the “sectional” color grading: i.e. the color grading that applies individually to shadows, midtones, and highlights.

fn sectional_color_grading (
in: vec3<f32>,
color_grading: ptr<function, ColorGrading>
) -> vec3<f32>

tone_mapping

#
Used by 8 shaders
fn tone_mapping (
in: vec4<f32>,
in_color_grading: ColorGrading
) -> vec4<f32>

approximate_inverse_tone_mapping

#
Used by 5 shaders

This is an incredibly crude approximation of the inverse of the tone mapping function. We assume here that there’s a simple linear relationship between the input and output which is not true at all, but useful to at least preserve the overall luminance of colors when sampling from an already tonemapped image. (e.g. for transmissive materials when HDR is off)

fn approximate_inverse_tone_mapping (
in: vec4<f32>,
color_grading: ColorGrading
) -> vec4<f32>
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