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2 commits
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9e29a5cb7d | |||
ce64403449 |
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@ -61,14 +61,17 @@ impl Scene {
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Self::pixel
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Self::pixel
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};
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};
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let mut rows: Vec<_> = image.enumerate_rows_mut().collect();
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rayon::scope(|s| {
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rayon::scope(|s| {
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// FIXME(Bruno): it would go even faster to cut the image in blocks of rows, leading to
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let chunk_size = self.camera.film().height() as usize / rayon::current_num_threads();
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// better cache-line behaviour...
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// `chunks_size + 1` to have exactly num_threads tasks spawned, even with rounding
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for (_, row) in image.enumerate_rows_mut() {
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for chunk in rows.chunks_mut(chunk_size + 1) {
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s.spawn(|_| {
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s.spawn(|_| {
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for (x, y, pixel) in row {
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for (_, row) in chunk {
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*pixel = pixel_func(&self, x as f32, y as f32).into();
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for (x, y, pixel) in row {
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pb.inc(1);
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*pixel = pixel_func(&self, x as f32, y as f32).into();
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pb.inc(1);
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}
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}
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}
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})
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})
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}
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}
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