src/gallium/drivers/freedreno/freedreno_resource.h

   1 /* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
   2
   3 /*
   4  * Copyright (C) 2012 Rob Clark <robclark@freedesktop.org>
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the next
  14  * paragraph) shall be included in all copies or substantial portions of the
  15  * Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  23  * SOFTWARE.
  24  *
  25  * Authors:
  26  *    Rob Clark <robclark@freedesktop.org>
  27  */
  28
  29 #ifndef FREEDRENO_RESOURCE_H_
  30 #define FREEDRENO_RESOURCE_H_
  31
  32 #include "util/u_transfer.h"
  33
  34 #include "freedreno_util.h"
  35
  36 /* Texture Layout on a3xx:
  37  *
  38  * Each mipmap-level contains all of it's layers (ie. all cubmap
  39  * faces, all 1d/2d array elements, etc).  The texture sampler is
  40  * programmed with the start address of each mipmap level, and hw
  41  * derives the layer offset within the level.
  42  *
  43  * Texture Layout on a4xx:
  44  *
  45  * For cubemap and 2d array, each layer contains all of it's mipmap
  46  * levels (layer_first layout).
  47  *
  48  * 3d textures are layed out as on a3xx, but unknown about 3d-array
  49  * textures.
  50  *
  51  * In either case, the slice represents the per-miplevel information,
  52  * but in layer_first layout it only includes the first layer, and
  53  * an additional offset of (rsc->layer_size * layer) must be added.
  54  */
  55 struct fd_resource_slice {
  56         uint32_t offset;         /* offset of first layer in slice */
  57         uint32_t pitch;
  58         uint32_t size0;          /* size of first layer in slice */
  59 };
  60
  61 struct fd_resource {
  62         struct u_resource base;
  63         struct fd_bo *bo;
  64         uint32_t cpp;
  65         bool layer_first;        /* see above description */
  66         uint32_t layer_size;
  67         struct fd_resource_slice slices[MAX_MIP_LEVELS];
  68         uint32_t timestamp;
  69         bool dirty, reading;
  70 };
  71
  72 static INLINE struct fd_resource *
  73 fd_resource(struct pipe_resource *ptex)
  74 {
  75         return (struct fd_resource *)ptex;
  76 }
  77
  78 static INLINE struct fd_resource_slice *
  79 fd_resource_slice(struct fd_resource *rsc, unsigned level)
  80 {
  81         assert(level <= rsc->base.b.last_level);
  82         return &rsc->slices[level];
  83 }
  84
  85 /* get offset for specified mipmap level and texture/array layer */
  86 static INLINE uint32_t
  87 fd_resource_offset(struct fd_resource *rsc, unsigned level, unsigned layer)
  88 {
  89         struct fd_resource_slice *slice = fd_resource_slice(rsc, level);
  90         unsigned offset;
  91         if (rsc->layer_first) {
  92                 offset = slice->offset + (rsc->layer_size * layer);
  93         } else {
  94                 offset = slice->offset + (slice->size0 * layer);
  95         }
  96         debug_assert(offset < fd_bo_size(rsc->bo));
  97         return offset;
  98 }
  99
 100 void fd_resource_screen_init(struct pipe_screen *pscreen);
 101 void fd_resource_context_init(struct pipe_context *pctx);
 102
 103 #endif /* FREEDRENO_RESOURCE_H_ */