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LibGfx: Make accumulate_even_odd_scanline() go faster

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...by checking scanline vector bounds before entering the loop.
This commit is contained in:
Aliaksandr Kalenik 2024-05-24 10:31:54 +01:00 • committed by Andreas Kling
commit 05f9733192
Notes: sideshowbarker 2024-07-18 05:37:06 +09:00
1 changed files with 4 additions and 2 deletions
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6
Userland/Libraries/LibGfx/EdgeFlagPathRasterizer.cpp
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@ -309,10 +309,12 @@ template<unsigned SamplesPerPixel>
auto EdgeFlagPathRasterizer<SamplesPerPixel>::accumulate_even_odd_scanline(EdgeExtent edge_extent, auto init, auto sample_callback) auto EdgeFlagPathRasterizer<SamplesPerPixel>::accumulate_even_odd_scanline(EdgeExtent edge_extent, auto init, auto sample_callback)
{ {
SampleType sample = init; SampleType sample = init;
VERIFY(edge_extent.min_x >= 0);
VERIFY(edge_extent.max_x <= static_cast<int>(m_scanline.size()));
for (int x = edge_extent.min_x; x <= edge_extent.max_x; x += 1) { for (int x = edge_extent.min_x; x <= edge_extent.max_x; x += 1) {
sample ^= m_scanline[x]; sample ^= m_scanline.data()[x];
sample_callback(x, sample); sample_callback(x, sample);
m_scanline[x] = 0; m_scanline.data()[x] = 0;
} }
return sample; return sample;
} }