RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-10-31 19:12:43 +00:00
Code Issues Activity Actions

LibWeb: Use box sampling instead of bilinear scaling when downscaling

Browse source 
As a heuristic, either the width or height of the scaled image should
decrease for box sampling to be used. Otherwise, we use bilinear
scaling.
This commit is contained in:
Jelle Raaijmakers 2023-05-19 00:41:12 +02:00 • committed by Andreas Kling
parent 81b30ec372
commit b79fd3d1a9
5 changed files with 13 additions and 6 deletions
Download patch file Download diff file Expand all files Collapse all files

6
Userland/Libraries/LibWeb/CSS/StyleValues/ImageStyleValue.cpp
View file

@ -102,8 +102,10 @@ Optional<CSSPixels> ImageStyleValue::natural_height() const
void ImageStyleValue::paint(PaintContext& context, DevicePixelRect const& dest_rect, CSS::ImageRendering image_rendering) const
{
if (auto* b = bitmap(m_current_frame_index); b != nullptr)
context.painter().draw_scaled_bitmap(dest_rect.to_type<int>(), *b, bitmap(0)->rect(), 1.0f, to_gfx_scaling_mode(image_rendering));
if (auto* b = bitmap(m_current_frame_index); b != nullptr) {
auto scaling_mode = to_gfx_scaling_mode(image_rendering, bitmap(0)->rect(), dest_rect.to_type<int>());
context.painter().draw_scaled_bitmap(dest_rect.to_type<int>(), *b, bitmap(0)->rect(), 1.f, scaling_mode);
}
}
}