ass::Backdrop::GaussianBlurCustom Struct Reference

Underlying type of GaussianBlur but with customizable downscale. Generally, use GaussianBlur. More...

#include <AUI/ASS/Property/Backdrop.h>

Public Member Functions
bool	operator== (const GaussianBlurCustom &) const =default

Signals and public fields
AMetric	radius = 6_dp
	blur radius.
int	downscale = 1
	downscale factor. =1 equals don't affect. Must be positive.

Detailed Description

Underlying type of GaussianBlur but with customizable downscale. Generally, use GaussianBlur.

Member Data Documentation

downscale

int ass::Backdrop::GaussianBlurCustom::downscale = 1

downscale factor. =1 equals don't affect. Must be positive.

Effective blur radius is radius * downscale. However, the downscale part is done by cheap downscaling of the framebuffer texture. Thus, by raising downscale factor you can achieve larger blur radius with approximately same visual result.

Performance benefit of downscale factor { .radius = 6_dp, .downscale = x } in comparison to { .radius = 6_dp * x, .downscale = 1 } is x^2.

view with_style {
  Backdrop { Backdrop::GaussianBlur { .radius = 6_dp, .downscale = 4 } },
}

is visually approximately same as

view with_style {
  Backdrop { Backdrop::GaussianBlur { .radius = 24_dp } },
}

but 16 times cheaper.

radius

AMetric ass::Backdrop::GaussianBlurCustom::radius = 6_dp

blur radius.

Performance costs of radius is O^2. Please use downscale factor to approximate large blur radius.

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The documentation for this struct was generated from the following file:

• aui.views/src/AUI/ASS/Property/Backdrop.h

Collaboration diagram for ass::Backdrop::GaussianBlurCustom: