src/gallium/drivers/etnaviv/etnaviv_resource.h

   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 #ifndef H_ETNAVIV_RESOURCE
  28 #define H_ETNAVIV_RESOURCE
  29
  30 #include "etnaviv_internal.h"
  31 #include "etnaviv_tiling.h"
  32 #include "pipe/p_state.h"
  33 #include "util/list.h"
  34
  35 struct pipe_screen;
  36
  37 struct etna_resource_level {
  38    unsigned width, padded_width; /* in pixels */
  39    unsigned height, padded_height; /* in samples */
  40    unsigned offset; /* offset into memory area */
  41    uint32_t stride; /* row stride */
  42    uint32_t layer_stride; /* layer stride */
  43    unsigned size; /* total size of memory area */
  44
  45    uint32_t ts_offset;
  46    uint32_t ts_layer_stride;
  47    uint32_t ts_size;
  48    uint32_t clear_value; /* clear value of resource level (mainly for TS) */
  49    bool ts_valid;
  50 };
  51
  52 enum etna_resource_addressing_mode {
  53    ETNA_ADDRESSING_MODE_TILED = 0,
  54    ETNA_ADDRESSING_MODE_LINEAR,
  55 };
  56
  57 /* status of queued up but not flushed reads and write operations.
  58  * In _transfer_map() we need to know if queued up rendering needs
  59  * to be flushed to preserve the order of cpu and gpu access. */
  60 enum etna_resource_status {
  61    ETNA_PENDING_WRITE = 0x01,
  62    ETNA_PENDING_READ = 0x02,
  63 };
  64
  65 struct etna_resource {
  66    struct pipe_resource base;
  67    struct renderonly_scanout *scanout;
  68    uint32_t seqno;
  69    uint32_t flush_seqno;
  70
  71    /* only lod 0 used for non-texture buffers */
  72    /* Layout for surface (tiled, multitiled, split tiled, ...) */
  73    enum etna_surface_layout layout;
  74    enum etna_resource_addressing_mode addressing_mode;
  75    /* Horizontal alignment for texture unit (TEXTURE_HALIGN_*) */
  76    unsigned halign;
  77    struct etna_bo *bo; /* Surface video memory */
  78    struct etna_bo *ts_bo; /* Tile status video memory */
  79
  80    struct etna_resource_level levels[ETNA_NUM_LOD];
  81
  82    /* When we are rendering to a texture, we need a differently tiled resource */
  83    struct pipe_resource *texture;
  84    /*
  85     * If imported resources have an render/sampler incompatible tiling, we keep
  86     * them as an external resource, which is blitted as needed.
  87     */
  88    struct pipe_resource *external;
  89
  90    enum etna_resource_status status;
  91
  92    /* resources accessed by queued but not flushed draws are tracked
  93     * in the used_resources list. */
  94    struct list_head list;
  95    struct etna_context *pending_ctx;
  96 };
  97
  98 /* returns TRUE if a is newer than b */
  99 static inline bool
 100 etna_resource_newer(struct etna_resource *a, struct etna_resource *b)
 101 {
 102    return (int)(a->seqno - b->seqno) > 0;
 103 }
 104
 105 /* returns TRUE if a is older than b */
 106 static inline bool
 107 etna_resource_older(struct etna_resource *a, struct etna_resource *b)
 108 {
 109    return (int)(a->seqno - b->seqno) < 0;
 110 }
 111
 112 /* returns TRUE if a resource has a TS, and it is valid for at least one level */
 113 bool
 114 etna_resource_has_valid_ts(struct etna_resource *res);
 115
 116 /* returns TRUE if the resource needs a resolve to itself */
 117 static inline bool
 118 etna_resource_needs_flush(struct etna_resource *res)
 119 {
 120    return etna_resource_has_valid_ts(res) && ((int)(res->seqno - res->flush_seqno) > 0);
 121 }
 122
 123 /* is the resource only used on the sampler? */
 124 static inline bool
 125 etna_resource_sampler_only(const struct pipe_resource *pres)
 126 {
 127    return (pres->bind & (PIPE_BIND_SAMPLER_VIEW | PIPE_BIND_RENDER_TARGET |
 128                          PIPE_BIND_DEPTH_STENCIL | PIPE_BIND_BLENDABLE)) ==
 129           PIPE_BIND_SAMPLER_VIEW;
 130 }
 131
 132 static inline struct etna_resource *
 133 etna_resource(struct pipe_resource *p)
 134 {
 135    return (struct etna_resource *)p;
 136 }
 137
 138 void
 139 etna_resource_used(struct etna_context *ctx, struct pipe_resource *prsc,
 140                    enum etna_resource_status status);
 141
 142 static inline void
 143 resource_read(struct etna_context *ctx, struct pipe_resource *prsc)
 144 {
 145    etna_resource_used(ctx, prsc, ETNA_PENDING_READ);
 146 }
 147
 148 static inline void
 149 resource_written(struct etna_context *ctx, struct pipe_resource *prsc)
 150 {
 151    etna_resource_used(ctx, prsc, ETNA_PENDING_WRITE);
 152 }
 153
 154 /* Allocate Tile Status for an etna resource.
 155  * Tile status is a cache of the clear status per tile. This means a smaller
 156  * surface has to be cleared which is faster.
 157  * This is also called "fast clear". */
 158 bool
 159 etna_screen_resource_alloc_ts(struct pipe_screen *pscreen,
 160                               struct etna_resource *prsc);
 161
 162 struct pipe_resource *
 163 etna_resource_alloc(struct pipe_screen *pscreen, unsigned layout,
 164                     enum etna_resource_addressing_mode mode, uint64_t modifier,
 165                     const struct pipe_resource *templat);
 166
 167 void
 168 etna_resource_screen_init(struct pipe_screen *pscreen);
 169
 170 #endif