| 0,0 → 1,106 |
|---|
| /************************************************************************** |
| * |
| * Copyright 2009 VMware, Inc. |
| * All Rights Reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the |
| * "Software"), to deal in the Software without restriction, including |
| * without limitation the rights to use, copy, modify, merge, publish, |
| * distribute, sub license, and/or sell copies of the Software, and to |
| * permit persons to whom the Software is furnished to do so, subject to |
| * the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the |
| * next paragraph) shall be included in all copies or substantial portions |
| * of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. |
| * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR |
| * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
| * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
| * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| * |
| **************************************************************************/ |
| |
| /** |
| * Functions for converting tiled data to linear and vice versa. |
| */ |
| |
| |
| #ifndef U_LINEAR_H |
| #define U_LINEAR_H |
| |
| #include "pipe/p_compiler.h" |
| #include "pipe/p_format.h" |
| |
| struct u_linear_format_block |
| { |
| /** Block size in bytes */ |
| unsigned size; |
| |
| /** Block width in pixels */ |
| unsigned width; |
| |
| /** Block height in pixels */ |
| unsigned height; |
| }; |
| |
| |
| struct pipe_tile_info |
| { |
| unsigned size; |
| unsigned stride; |
| |
| /* The number of tiles */ |
| unsigned tiles_x; |
| unsigned tiles_y; |
| |
| /* size of each tile expressed in blocks */ |
| unsigned cols; |
| unsigned rows; |
| |
| /* Describe the tile in pixels */ |
| struct u_linear_format_block tile; |
| |
| /* Describe each block within the tile */ |
| struct u_linear_format_block block; |
| }; |
| |
| void pipe_linear_to_tile(size_t src_stride, const void *src_ptr, |
| struct pipe_tile_info *t, void *dst_ptr); |
| |
| void pipe_linear_from_tile(struct pipe_tile_info *t, const void *src_ptr, |
| size_t dst_stride, void *dst_ptr); |
| |
| /** |
| * Convenience function to fillout a pipe_tile_info struct. |
| * @t info to fill out. |
| * @block block info about pixel layout |
| * @tile_width the width of the tile in pixels |
| * @tile_height the height of the tile in pixels |
| * @tiles_x number of tiles in x axis |
| * @tiles_y number of tiles in y axis |
| */ |
| void pipe_linear_fill_info(struct pipe_tile_info *t, |
| const struct u_linear_format_block *block, |
| unsigned tile_width, unsigned tile_height, |
| unsigned tiles_x, unsigned tiles_y); |
| |
| static INLINE boolean pipe_linear_check_tile(const struct pipe_tile_info *t) |
| { |
| if (t->tile.size != t->block.size * t->cols * t->rows) |
| return FALSE; |
| |
| if (t->stride != t->block.size * t->cols * t->tiles_x) |
| return FALSE; |
| |
| if (t->size < t->stride * t->rows * t->tiles_y) |
| return FALSE; |
| |
| return TRUE; |
| } |
| |
| #endif /* U_LINEAR_H */ |