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/list.h"
  33 #include "util/u_range.h"
  34 #include "util/u_transfer.h"
  35
  36 #include "freedreno_batch.h"
  37 #include "freedreno_util.h"
  38
  39 /* Texture Layout on a3xx:
  40  *
  41  * Each mipmap-level contains all of it's layers (ie. all cubmap
  42  * faces, all 1d/2d array elements, etc).  The texture sampler is
  43  * programmed with the start address of each mipmap level, and hw
  44  * derives the layer offset within the level.
  45  *
  46  * Texture Layout on a4xx:
  47  *
  48  * For cubemap and 2d array, each layer contains all of it's mipmap
  49  * levels (layer_first layout).
  50  *
  51  * 3d textures are layed out as on a3xx, but unknown about 3d-array
  52  * textures.
  53  *
  54  * In either case, the slice represents the per-miplevel information,
  55  * but in layer_first layout it only includes the first layer, and
  56  * an additional offset of (rsc->layer_size * layer) must be added.
  57  */
  58 struct fd_resource_slice {
  59         uint32_t offset;         /* offset of first layer in slice */
  60         uint32_t pitch;
  61         uint32_t size0;          /* size of first layer in slice */
  62 };
  63
  64 /* status of queued up but not flushed reads and write operations.
  65  * In _transfer_map() we need to know if queued up rendering needs
  66  * to be flushed to preserve the order of cpu and gpu access.
  67  */
  68 enum fd_resource_status {
  69         FD_PENDING_WRITE = 0x01,
  70         FD_PENDING_READ  = 0x02,
  71 };
  72
  73 struct fd_resource {
  74         struct u_resource base;
  75         struct fd_bo *bo;
  76         uint32_t cpp;
  77         enum pipe_format internal_format;
  78         bool layer_first;        /* see above description */
  79         uint32_t layer_size;
  80         struct fd_resource_slice slices[MAX_MIP_LEVELS];
  81         uint32_t timestamp;
  82         /* buffer range that has been initialized */
  83         struct util_range valid_buffer_range;
  84
  85         /* reference to the resource holding stencil data for a z32_s8 texture */
  86         /* TODO rename to secondary or auxiliary? */
  87         struct fd_resource *stencil;
  88
  89         /* pending read/write state: */
  90         enum fd_resource_status status;
  91         /* resources accessed by queued but not flushed draws are tracked
  92          * in the used_resources list.
  93          */
  94         struct list_head list;
  95         struct fd_batch *pending_batch;
  96 };
  97
  98 static inline struct fd_resource *
  99 fd_resource(struct pipe_resource *ptex)
 100 {
 101         return (struct fd_resource *)ptex;
 102 }
 103
 104 struct fd_transfer {
 105         struct pipe_transfer base;
 106         void *staging;
 107 };
 108
 109 static inline struct fd_transfer *
 110 fd_transfer(struct pipe_transfer *ptrans)
 111 {
 112         return (struct fd_transfer *)ptrans;
 113 }
 114
 115 static inline struct fd_resource_slice *
 116 fd_resource_slice(struct fd_resource *rsc, unsigned level)
 117 {
 118         assert(level <= rsc->base.b.last_level);
 119         return &rsc->slices[level];
 120 }
 121
 122 /* get offset for specified mipmap level and texture/array layer */
 123 static inline uint32_t
 124 fd_resource_offset(struct fd_resource *rsc, unsigned level, unsigned layer)
 125 {
 126         struct fd_resource_slice *slice = fd_resource_slice(rsc, level);
 127         unsigned offset;
 128         if (rsc->layer_first) {
 129                 offset = slice->offset + (rsc->layer_size * layer);
 130         } else {
 131                 offset = slice->offset + (slice->size0 * layer);
 132         }
 133         debug_assert(offset < fd_bo_size(rsc->bo));
 134         return offset;
 135 }
 136
 137 void fd_resource_screen_init(struct pipe_screen *pscreen);
 138 void fd_resource_context_init(struct pipe_context *pctx);
 139
 140 bool fd_render_condition_check(struct pipe_context *pctx);
 141
 142 #endif /* FREEDRENO_RESOURCE_H_ */