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Member "mesa-20.1.8/src/gallium/drivers/etnaviv/etnaviv_tiling.c" (16 Sep 2020, 4420 Bytes) of package /linux/misc/mesa-20.1.8.tar.xz:


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    1 /*
    2  * Copyright (c) 2012-2015 Etnaviv Project
    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, sub license,
    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
   12  * next paragraph) shall be included in all copies or substantial portions
   13  * of the 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 NON-INFRINGEMENT. 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
   21  * DEALINGS IN THE SOFTWARE.
   22  *
   23  * Authors:
   24  *    Wladimir J. van der Laan <laanwj@gmail.com>
   25  */
   26 
   27 #include "etnaviv_tiling.h"
   28 
   29 #include <stdint.h>
   30 #include <stdio.h>
   31 
   32 #define TEX_TILE_WIDTH (4)
   33 #define TEX_TILE_HEIGHT (4)
   34 #define TEX_TILE_WORDS (TEX_TILE_WIDTH * TEX_TILE_HEIGHT)
   35 
   36 #define DO_TILE(type)                                                   \
   37    src_stride /= sizeof(type);                                          \
   38    dst_stride = (dst_stride * TEX_TILE_HEIGHT) / sizeof(type);          \
   39    for (unsigned srcy = 0; srcy < height; ++srcy) {                     \
   40       unsigned dsty = basey + srcy;                                     \
   41       unsigned ty = (dsty / TEX_TILE_HEIGHT) * dst_stride +             \
   42                     (dsty % TEX_TILE_HEIGHT) * TEX_TILE_WIDTH;          \
   43       for (unsigned srcx = 0; srcx < width; ++srcx) {                   \
   44          unsigned dstx = basex + srcx;                                  \
   45          ((type *)dest)[ty + (dstx / TEX_TILE_WIDTH) * TEX_TILE_WORDS + \
   46                         (dstx % TEX_TILE_WIDTH)] =                      \
   47             ((type *)src)[srcy * src_stride + srcx];                    \
   48       }                                                                 \
   49    }
   50 
   51 #define DO_UNTILE(type)                                                   \
   52    src_stride = (src_stride * TEX_TILE_HEIGHT) / sizeof(type);            \
   53    dst_stride /= sizeof(type);                                            \
   54    for (unsigned dsty = 0; dsty < height; ++dsty) {                       \
   55       unsigned srcy = basey + dsty;                                       \
   56       unsigned sy = (srcy / TEX_TILE_HEIGHT) * src_stride +               \
   57                     (srcy % TEX_TILE_HEIGHT) * TEX_TILE_WIDTH;            \
   58       for (unsigned dstx = 0; dstx < width; ++dstx) {                     \
   59          unsigned srcx = basex + dstx;                                    \
   60          ((type *)dest)[dsty * dst_stride + dstx] =                       \
   61             ((type *)src)[sy + (srcx / TEX_TILE_WIDTH) * TEX_TILE_WORDS + \
   62                           (srcx % TEX_TILE_WIDTH)];                       \
   63       }                                                                   \
   64    }
   65 
   66 void
   67 etna_texture_tile(void *dest, void *src, unsigned basex, unsigned basey,
   68                   unsigned dst_stride, unsigned width, unsigned height,
   69                   unsigned src_stride, unsigned elmtsize)
   70 {
   71    if (elmtsize == 8) {
   72       DO_TILE(uint64_t)
   73    } else if (elmtsize == 4) {
   74       DO_TILE(uint32_t)
   75    } else if (elmtsize == 2) {
   76       DO_TILE(uint16_t)
   77    } else if (elmtsize == 1) {
   78       DO_TILE(uint8_t)
   79    } else {
   80       printf("etna_texture_tile: unhandled element size %i\n", elmtsize);
   81    }
   82 }
   83 
   84 void
   85 etna_texture_untile(void *dest, void *src, unsigned basex, unsigned basey,
   86                     unsigned src_stride, unsigned width, unsigned height,
   87                     unsigned dst_stride, unsigned elmtsize)
   88 {
   89    if (elmtsize == 8) {
   90       DO_UNTILE(uint64_t)
   91    } else if (elmtsize == 4) {
   92       DO_UNTILE(uint32_t);
   93    } else if (elmtsize == 2) {
   94       DO_UNTILE(uint16_t);
   95    } else if (elmtsize == 1) {
   96       DO_UNTILE(uint8_t);
   97    } else {
   98       printf("etna_texture_tile: unhandled element size %i\n", elmtsize);
   99    }
  100 }