Comment improvement in rencache.c
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#include <stdio.h>
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#include <stdio.h>
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#include "rencache.h"
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#include "rencache.h"
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/* a cache over the software renderer -- all drawing operations are stored
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/* a cache over the software renderer -- all drawing operations are stored as
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** as commands when issued. At the end of the frame we write the commands to
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** commands when issued. At the end of the frame we write the commands to a grid
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** a spatial hash, take the cells that have changed since the previous frame,
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** of hash values, take the cells that have changed since the previous frame,
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** merge them into dirty rectangles and redraw only those regions */
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** merge them into dirty rectangles and redraw only those regions */
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#define CELLS_X 80
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#define CELLS_X 80
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