`simvx.graphics.renderer.colour_grading`¶

Colour grading pass — LUT-based colour correction via compute shader.

Module Contents¶

Compute-based colour grading: LUT lookup + brightness/contrast/saturation/temperature.

`generate_neutral_lut`	Generate an identity 3D LUT (no colour change).
`generate_warm_lut`	Generate a warm-toned 3D LUT (shifted toward orange/amber).
`generate_cool_lut`	Generate a cool-toned 3D LUT (shifted toward blue/teal).
`generate_vintage_lut`	Generate a vintage/desaturated warm 3D LUT.

`__all__`
`log`

simvx.graphics.renderer.colour_grading.generate_neutral_lut(size: int = 32) → numpy.ndarray[source]¶: Generate an identity 3D LUT (no colour change).

simvx.graphics.renderer.colour_grading.generate_warm_lut(size: int = 32) → numpy.ndarray[source]¶: Generate a warm-toned 3D LUT (shifted toward orange/amber).

simvx.graphics.renderer.colour_grading.generate_cool_lut(size: int = 32) → numpy.ndarray[source]¶: Generate a cool-toned 3D LUT (shifted toward blue/teal).

simvx.graphics.renderer.colour_grading.generate_vintage_lut(size: int = 32) → numpy.ndarray[source]¶: Generate a vintage/desaturated warm 3D LUT.

class simvx.graphics.renderer.colour_grading.ColourGradingPass(engine: Any)[source]¶

Compute-based colour grading: LUT lookup + brightness/contrast/saturation/temperature.

Operates in-place on the HDR colour image. Apply after fog, before tone mapping.

Initialization

setup(width: int, height: int, color_view: Any) → None[source]¶: Initialize colour grading pipeline and upload default neutral LUT.

set_lut(lut_data: numpy.ndarray) → None[source]¶: Upload a new 3D LUT texture. Shape should be (size, size, size, 4) uint8.

render(cmd: Any) → None[source]¶

Dispatch colour grading compute shader. Call after fog, before tonemap.

Args: cmd: Active command buffer (outside any render pass).

resize(width: int, height: int, color_view: Any) → None[source]¶: Update descriptors for new dimensions.