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LibGfx: Sprinkle some FLATTEN/hot attributes in the path rasterizer

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This seems to actually improve performance to the tune of about +5 fps.
This commit is contained in:
MacDue 2024-01-06 13:52:34 +00:00 committed by Andreas Kling
parent e2152a5b3d
commit ec93973158
2 changed files with 4 additions and 4 deletions
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6
Userland/Libraries/LibGfx/EdgeFlagPathRasterizer.cpp
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@ -167,7 +167,7 @@ void EdgeFlagPathRasterizer<SamplesPerPixel>::fill_internal(Painter& painter, Pa
auto for_each_sample = [&](Detail::Edge& edge, int start_subpixel_y, int end_subpixel_y, EdgeExtent& edge_extent, auto callback) {
for (int y = start_subpixel_y; y < end_subpixel_y; y++) {
auto xi = static_cast<int>(edge.x + SubpixelSample::nrooks_subpixel_offsets[y]);
if (xi < 0 || size_t(xi) >= m_scanline.size()) {
if (xi < 0 || size_t(xi) >= m_scanline.size()) [[unlikely]] {
// FIXME: For very low dxdy values, floating point error can push the sample outside the scanline.
// This does not seem to make a visible difference most of the time (and is more likely from generated
// paths, such as this 3D canvas demo: https://www.kevs3d.co.uk/dev/html5logo/).
@ -241,7 +241,7 @@ Color EdgeFlagPathRasterizer<SamplesPerPixel>::scanline_color(int scanline, int
}
template<unsigned SamplesPerPixel>
Detail::Edge* EdgeFlagPathRasterizer<SamplesPerPixel>::plot_edges_for_scanline(int scanline, auto plot_edge, EdgeExtent& edge_extent, Detail::Edge* active_edges)
__attribute__((hot)) Detail::Edge* EdgeFlagPathRasterizer<SamplesPerPixel>::plot_edges_for_scanline(int scanline, auto plot_edge, EdgeExtent& edge_extent, Detail::Edge* active_edges)
{
auto y_subpixel = [](int y) {
return y & (SamplesPerPixel - 1);
@ -368,7 +368,7 @@ void EdgeFlagPathRasterizer<SamplesPerPixel>::fast_fill_solid_color_span(ARGB32*
template<unsigned SamplesPerPixel>
template<Painter::WindingRule WindingRule>
void EdgeFlagPathRasterizer<SamplesPerPixel>::write_scanline(Painter& painter, int scanline, EdgeExtent edge_extent, auto& color_or_function)
FLATTEN __attribute__((hot)) void EdgeFlagPathRasterizer<SamplesPerPixel>::write_scanline(Painter& painter, int scanline, EdgeExtent edge_extent, auto& color_or_function)
{
// Handle scanline clipping.
auto left_clip = m_clip.left() - m_blit_origin.x();

2
Userland/Libraries/LibGfx/EdgeFlagPathRasterizer.h
View file

@ -176,7 +176,7 @@ private:
Detail::Edge* plot_edges_for_scanline(int scanline, auto plot_edge, EdgeExtent&, Detail::Edge* active_edges = nullptr);
template<Painter::WindingRule>
void write_scanline(Painter&, int scanline, EdgeExtent, auto& color_or_function);
FLATTEN void write_scanline(Painter&, int scanline, EdgeExtent, auto& color_or_function);
Color scanline_color(int scanline, int offset, u8 alpha, auto& color_or_function);
void write_pixel(BitmapFormat format, ARGB32* scanline_ptr, int scanline, int offset, SampleType sample, auto& color_or_function);
void fast_fill_solid_color_span(ARGB32* scanline_ptr, int start, int end, Color color);