LibWeb: Enable bilinear blending for bitmaps

This is slower, but looks a lot nicer. :^)

Userland/Libraries/LibWeb/HTML/CanvasRenderingContext2D.cpp

@@ -100,7 +100,7 @@ void CanvasRenderingContext2D::draw_image(const HTMLImageElement& image_element,
     Gfx::FloatRect dst_rect = { x, y, (float)image_element.bitmap()->width(), (float)image_element.bitmap()->height() };
     auto rect = m_transform.map(dst_rect);
 
-    painter->draw_scaled_bitmap(enclosing_int_rect(rect), *image_element.bitmap(), src_rect);
+    painter->draw_scaled_bitmap(enclosing_int_rect(rect), *image_element.bitmap(), src_rect, 1.0f, Gfx::Painter::ScalingMode::BilinearBlend);
 }
 
 void CanvasRenderingContext2D::scale(float sx, float sy)

Userland/Libraries/LibWeb/Layout/CanvasBox.cpp

@@ -39,7 +39,7 @@ void CanvasBox::paint(PaintContext& context, PaintPhase phase)
             return;
 
         if (dom_node().bitmap())
-            context.painter().draw_scaled_bitmap(enclosing_int_rect(absolute_rect()), *dom_node().bitmap(), dom_node().bitmap()->rect());
+            context.painter().draw_scaled_bitmap(enclosing_int_rect(absolute_rect()), *dom_node().bitmap(), dom_node().bitmap()->rect(), 1.0f, Gfx::Painter::ScalingMode::BilinearBlend);
     }
 }
 

Userland/Libraries/LibWeb/Layout/ImageBox.cpp

@@ -96,7 +96,7 @@ void ImageBox::paint(PaintContext& context, PaintPhase phase)
                 alt = image_element.src();
             context.painter().draw_text(enclosing_int_rect(absolute_rect()), alt, Gfx::TextAlignment::Center, computed_values().color(), Gfx::TextElision::Right);
         } else if (auto bitmap = m_image_loader.bitmap(m_image_loader.current_frame_index())) {
-            context.painter().draw_scaled_bitmap(enclosing_int_rect(absolute_rect()), *bitmap, bitmap->rect());
+            context.painter().draw_scaled_bitmap(enclosing_int_rect(absolute_rect()), *bitmap, bitmap->rect(), 1.0f, Gfx::Painter::ScalingMode::BilinearBlend);
         }
     }
 }