Use separate pixmaps for each edge of a container (#3479)#5430
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buchankn wants to merge 2 commits into
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Use separate pixmaps for each edge of a container (#3479)#5430buchankn wants to merge 2 commits into
buchankn wants to merge 2 commits into
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Great attempt but this creates artifacts for me in the borders. Before: After: |
orestisfl
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May 17, 2024
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| void sparse_surface_copy(sparse_surface_t *src_sparse, surface_t *dest, double src_x, double src_y, | ||
| double dest_x, double dest_y, double width, double height) { |
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width and height ignored here.
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This pull request fixes #3479.
i3 currently allocates one big pixmap for an entire window, but only draws on the edges of the pixmap. This code allocates four separate pixmaps for each edge of the window (a 'sparse surface'), thereby using less memory.
To ensure 'correctness', any drawing operation is performed on each of the four edge pixmaps, so that any operation that crosses pixmap boundaries will be drawn correctly. Note that any draws outside the pixmap boundary will just be clipped. This may not be the most efficient way to handle this, and could possibly be optimized, but I was going for correctness in this case. I'm open to suggestions on this...