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      1 /*
      2  * Copyright  2014 Broadcom
      3  *
      4  * Permission is hereby granted, free of charge, to any person obtaining a
      5  * copy of this software and associated documentation files (the "Software"),
      6  * to deal in the Software without restriction, including without limitation
      7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
      8  * and/or sell copies of the Software, and to permit persons to whom the
      9  * Software is furnished to do so, subject to the following conditions:
     10  *
     11  * The above copyright notice and this permission notice (including the next
     12  * paragraph) shall be included in all copies or substantial portions of the
     13  * Software.
     14  *
     15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
     20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
     21  * IN THE SOFTWARE.
     22  */
     23 
     24 #ifndef VC4_TILING_H
     25 #define VC4_TILING_H
     26 
     27 
     28 /** Return the width in pixels of a 64-byte microtile. */
     29 static inline uint32_t
     30 vc4_utile_width(int cpp)
     31 {
     32         switch (cpp) {
     33         case 1:
     34         case 2:
     35                 return 8;
     36         case 4:
     37                 return 4;
     38         case 8:
     39                 return 2;
     40         default:
     41                 fprintf(stderr, "unknown cpp: %d\n", cpp);
     42                 abort();
     43         }
     44 }
     45 
     46 /** Return the height in pixels of a 64-byte microtile. */
     47 static inline uint32_t
     48 vc4_utile_height(int cpp)
     49 {
     50         switch (cpp) {
     51         case 1:
     52                 return 8;
     53         case 2:
     54         case 4:
     55         case 8:
     56                 return 4;
     57         default:
     58                 fprintf(stderr, "unknown cpp: %d\n", cpp);
     59                 abort();
     60         }
     61 }
     62 
     63 bool vc4_size_is_lt(uint32_t width, uint32_t height, int cpp) ATTRIBUTE_CONST;
     64 void vc4_load_tiled_image(void *dst, uint32_t dst_stride,
     65                           void *src, uint32_t src_stride,
     66                           uint8_t tiling_format, int cpp,
     67                           const struct pipe_box *box);
     68 void vc4_store_tiled_image(void *dst, uint32_t dst_stride,
     69                            void *src, uint32_t src_stride,
     70                            uint8_t tiling_format, int cpp,
     71                            const struct pipe_box *box);
     72 
     73 #endif /* VC4_TILING_H */
     74