src/panfrost/encoder/pan_texture.h

   1 /*
   2  * Copyright (C) 2008 VMware, Inc.
   3  * Copyright (C) 2014 Broadcom
   4  * Copyright (C) 2018-2019 Alyssa Rosenzweig
   5  * Copyright (C) 2019-2020 Collabora, Ltd.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the next
  15  * paragraph) shall be included in all copies or substantial portions of the
  16  * Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  21  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  22  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  23  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  24  * SOFTWARE.
  25  *
  26  */
  27
  28 #ifndef __PAN_TEXTURE_H
  29 #define __PAN_TEXTURE_H
  30
  31 #include <stdbool.h>
  32 #include "util/format/u_format.h"
  33
  34 struct panfrost_slice {
  35         unsigned offset;
  36         unsigned stride;
  37         unsigned size0;
  38
  39         /* If there is a header preceding each slice, how big is
  40          * that header? Used for AFBC */
  41         unsigned header_size;
  42
  43         /* If checksumming is enabled following the slice, what
  44          * is its offset/stride? */
  45         unsigned checksum_offset;
  46         unsigned checksum_stride;
  47
  48         /* Has anything been written to this slice? */
  49         bool initialized;
  50 };
  51
  52 unsigned
  53 panfrost_compute_checksum_size(
  54         struct panfrost_slice *slice,
  55         unsigned width,
  56         unsigned height);
  57
  58 /* AFBC */
  59
  60 bool
  61 panfrost_format_supports_afbc(enum pipe_format format);
  62
  63 unsigned
  64 panfrost_afbc_header_size(unsigned width, unsigned height);
  65
  66 /* Formats */
  67
  68 enum mali_format
  69 panfrost_find_format(const struct util_format_description *desc);
  70
  71 bool
  72 panfrost_is_z24s8_variant(enum pipe_format fmt);
  73
  74 unsigned
  75 panfrost_translate_swizzle_4(const unsigned char swizzle[4]);
  76
  77 void
  78 panfrost_invert_swizzle(const unsigned char *in, unsigned char *out);
  79
  80 static inline unsigned
  81 panfrost_get_default_swizzle(unsigned components)
  82 {
  83         switch (components) {
  84         case 1:
  85                 return (MALI_CHANNEL_RED << 0) | (MALI_CHANNEL_ZERO << 3) |
  86                         (MALI_CHANNEL_ZERO << 6) | (MALI_CHANNEL_ONE << 9);
  87         case 2:
  88                 return (MALI_CHANNEL_RED << 0) | (MALI_CHANNEL_GREEN << 3) |
  89                         (MALI_CHANNEL_ZERO << 6) | (MALI_CHANNEL_ONE << 9);
  90         case 3:
  91                 return (MALI_CHANNEL_RED << 0) | (MALI_CHANNEL_GREEN << 3) |
  92                         (MALI_CHANNEL_BLUE << 6) | (MALI_CHANNEL_ONE << 9);
  93         case 4:
  94                 return (MALI_CHANNEL_RED << 0) | (MALI_CHANNEL_GREEN << 3) |
  95                         (MALI_CHANNEL_BLUE << 6) | (MALI_CHANNEL_ALPHA << 9);
  96         default:
  97                 unreachable("Invalid number of components");
  98         }
  99 }
 100
 101 #endif