BrushCue Example: Custom Color Shader

You can use this tool online at https://www.brushcue.com/tools/custom-color-shader

!pip install brushcue

import io
from PIL import Image

import brushcue as bc

graph = bc.Composition.monet_women_with_parasol().color_transformer_shader(
    "// Edit this body to transform each pixel. `input` is the source color.\nlet inverted = vec3<f32>(1.0) - input.rgb;\nreturn vec4<f32>(inverted, input.a);",
    "// You can write your helper functions here if you need them.",
    bc.ColorRepresentation.srgb(),
    bc.ColorRepresentation.srgb(),
    bc.Dictionary.create(),
)

ctx = bc.Context()
composition = graph.execute(ctx)
data_bytes = composition.to_image_bytes(ctx)
img = Image.open(io.BytesIO(data_bytes))
img.thumbnail((400, 400))  # Remove this line for full resolution
img

[wgpu] using backend Metal — adapter 'Apple M5' (IntegratedGpu), driver ''