141     * increases the ratio between its major and minor axes in a  in intel_calculate_tile_dimensions()
151    /* Make sure that the minimum major axis where the search starts  in intel_calculate_tile_dimensions()
158    /* Stop search at a an aspect ratio of approximately 2 (A major  in intel_calculate_tile_dimensions()
173    for (unsigned major = min_major; major <= max_major;) {  in intel_calculate_tile_dimensions()  local
175        * present major parameter.  in intel_calculate_tile_dimensions()
177       const unsigned minor = MAX2(1, tile_surf / major);  in intel_calculate_tile_dimensions()
180        * used in the X-major orientation.  in intel_calculate_tile_dimensions()
182       const unsigned horiz_tiles_x = DIV_ROUND_UP(fb_block_width, major);  in intel_calculate_tile_dimensions()
186       /* Calculate the number of blocks we need to add to the major  in intel_calculate_tile_dimensions()
187        * axis for the number of X-major tile columns (horiz_tiles_x)  in intel_calculate_tile_dimensions()
189        * to exhaustive search, since an increase in major can only  in intel_calculate_tile_dimensions()
191        * as well, vert_tiles_x is monotonically increasing with major.  in intel_calculate_tile_dimensions()
193        * If the number of tile columns is already 1 the X-major  in intel_calculate_tile_dimensions()
196        * Y-major search -- If the Y-major solution cannot be improved  in intel_calculate_tile_dimensions()
200          DIV_ROUND_UP(fb_block_width - major * (horiz_tiles_x - 1),  in intel_calculate_tile_dimensions()
203       /* Update the best known solution with the present X-major one  in intel_calculate_tile_dimensions()
210          best_block_width = major;  in intel_calculate_tile_dimensions()
221        * used in the Y-major orientation.  in intel_calculate_tile_dimensions()
224       const unsigned vert_tiles_y = DIV_ROUND_UP(fb_block_height, major);  in intel_calculate_tile_dimensions()
227       /* Calculate the number of blocks we need to add to the major  in intel_calculate_tile_dimensions()
228        * axis for the number of Y-major tile rows (vert_tiles_y) to  in intel_calculate_tile_dimensions()
233          DIV_ROUND_UP(fb_block_height - major * (vert_tiles_y - 1),  in intel_calculate_tile_dimensions()
236       /* Update the best known solution with the present Y-major one  in intel_calculate_tile_dimensions()
244          best_block_height = major;  in intel_calculate_tile_dimensions()
253       /* Use the smallest of the computed major increments in order to  in intel_calculate_tile_dimensions()
255        * X-major and Y-major searches have terminated major will be  in intel_calculate_tile_dimensions()
260       assert(major + delta > major);  in intel_calculate_tile_dimensions()
261       major += delta;  in intel_calculate_tile_dimensions()