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 };
  50
  51 /* status of queued up but not flushed reads and write operations.
  52  * In _transfer_map() we need to know if queued up rendering needs
  53  * to be flushed to preserve the order of cpu and gpu access. */
  54 enum etna_resource_status {
  55    ETNA_PENDING_WRITE = 0x01,
  56    ETNA_PENDING_READ = 0x02,
  57 };
  58
  59 struct etna_resource {
  60    struct pipe_resource base;
  61    struct renderonly_scanout *scanout;
  62    uint32_t seqno;
  63
  64    /* only lod 0 used for non-texture buffers */
  65    /* Layout for surface (tiled, multitiled, split tiled, ...) */
  66    enum etna_surface_layout layout;
  67    /* Horizontal alignment for texture unit (TEXTURE_HALIGN_*) */
  68    unsigned halign;
  69    struct etna_bo *bo; /* Surface video memory */
  70    struct etna_bo *ts_bo; /* Tile status video memory */
  71
  72    struct etna_resource_level levels[ETNA_NUM_LOD];
  73
  74    /* When we are rendering to a texture, we need a differently tiled resource */
  75    struct pipe_resource *texture;
  76
  77    enum etna_resource_status status;
  78
  79    /* resources accessed by queued but not flushed draws are tracked
  80     * in the used_resources list. */
  81    struct list_head list;
  82    struct etna_context *pending_ctx;
  83 };
  84
  85 /* returns TRUE if a is newer than b */
  86 static inline bool
  87 etna_resource_newer(struct etna_resource *a, struct etna_resource *b)
  88 {
  89    return (int)(a->seqno - b->seqno) > 0;
  90 }
  91
  92 /* returns TRUE if a is older than b */
  93 static inline bool
  94 etna_resource_older(struct etna_resource *a, struct etna_resource *b)
  95 {
  96    return (int)(a->seqno - b->seqno) < 0;
  97 }
  98
  99 /* is the resource only used on the sampler? */
 100 static inline bool
 101 etna_resource_sampler_only(const struct pipe_resource *pres)
 102 {
 103    return (pres->bind & (PIPE_BIND_SAMPLER_VIEW | PIPE_BIND_RENDER_TARGET |
 104                          PIPE_BIND_DEPTH_STENCIL | PIPE_BIND_BLENDABLE)) ==
 105           PIPE_BIND_SAMPLER_VIEW;
 106 }
 107
 108 static inline struct etna_resource *
 109 etna_resource(struct pipe_resource *p)
 110 {
 111    return (struct etna_resource *)p;
 112 }
 113
 114 void
 115 etna_resource_used(struct etna_context *ctx, struct pipe_resource *prsc,
 116                    enum etna_resource_status status);
 117
 118 void
 119 etna_resource_wait(struct pipe_context *ctx, struct etna_resource *rsc);
 120
 121 static inline void
 122 resource_read(struct etna_context *ctx, struct pipe_resource *prsc)
 123 {
 124    etna_resource_used(ctx, prsc, ETNA_PENDING_READ);
 125 }
 126
 127 static inline void
 128 resource_written(struct etna_context *ctx, struct pipe_resource *prsc)
 129 {
 130    etna_resource_used(ctx, prsc, ETNA_PENDING_WRITE);
 131 }
 132
 133 /* Allocate Tile Status for an etna resource.
 134  * Tile status is a cache of the clear status per tile. This means a smaller
 135  * surface has to be cleared which is faster.
 136  * This is also called "fast clear". */
 137 bool
 138 etna_screen_resource_alloc_ts(struct pipe_screen *pscreen,
 139                               struct etna_resource *prsc);
 140
 141 struct pipe_resource *
 142 etna_resource_alloc(struct pipe_screen *pscreen, unsigned layout,
 143                     const struct pipe_resource *templat);
 144
 145 void
 146 etna_resource_screen_init(struct pipe_screen *pscreen);
 147
 148 #endif