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 /* status of queued up but not flushed reads and write operations.
  53  * In _transfer_map() we need to know if queued up rendering needs
  54  * to be flushed to preserve the order of cpu and gpu access. */
  55 enum etna_resource_status {
  56    ETNA_PENDING_WRITE = 0x01,
  57    ETNA_PENDING_READ = 0x02,
  58 };
  59
  60 struct etna_resource {
  61    struct pipe_resource base;
  62    struct renderonly_scanout *scanout;
  63    uint32_t seqno;
  64    uint32_t flush_seqno;
  65
  66    /* only lod 0 used for non-texture buffers */
  67    /* Layout for surface (tiled, multitiled, split tiled, ...) */
  68    enum etna_surface_layout layout;
  69    /* Horizontal alignment for texture unit (TEXTURE_HALIGN_*) */
  70    unsigned halign;
  71    struct etna_bo *bo; /* Surface video memory */
  72    struct etna_bo *ts_bo; /* Tile status video memory */
  73
  74    struct etna_resource_level levels[ETNA_NUM_LOD];
  75
  76    /* When we are rendering to a texture, we need a differently tiled resource */
  77    struct pipe_resource *texture;
  78
  79    enum etna_resource_status status;
  80
  81    /* resources accessed by queued but not flushed draws are tracked
  82     * in the used_resources list. */
  83    struct list_head list;
  84    struct etna_context *pending_ctx;
  85 };
  86
  87 /* returns TRUE if a is newer than b */
  88 static inline bool
  89 etna_resource_newer(struct etna_resource *a, struct etna_resource *b)
  90 {
  91    return (int)(a->seqno - b->seqno) > 0;
  92 }
  93
  94 /* returns TRUE if a is older than b */
  95 static inline bool
  96 etna_resource_older(struct etna_resource *a, struct etna_resource *b)
  97 {
  98    return (int)(a->seqno - b->seqno) < 0;
  99 }
 100
 101 /* returns TRUE if the resource needs a resolve to itself */
 102 static inline bool
 103 etna_resource_needs_flush(struct etna_resource *res)
 104 {
 105    return (int)(res->seqno - res->flush_seqno) > 0;
 106 }
 107
 108 /* is the resource only used on the sampler? */
 109 static inline bool
 110 etna_resource_sampler_only(const struct pipe_resource *pres)
 111 {
 112    return (pres->bind & (PIPE_BIND_SAMPLER_VIEW | PIPE_BIND_RENDER_TARGET |
 113                          PIPE_BIND_DEPTH_STENCIL | PIPE_BIND_BLENDABLE)) ==
 114           PIPE_BIND_SAMPLER_VIEW;
 115 }
 116
 117 static inline struct etna_resource *
 118 etna_resource(struct pipe_resource *p)
 119 {
 120    return (struct etna_resource *)p;
 121 }
 122
 123 void
 124 etna_resource_used(struct etna_context *ctx, struct pipe_resource *prsc,
 125                    enum etna_resource_status status);
 126
 127 static inline void
 128 resource_read(struct etna_context *ctx, struct pipe_resource *prsc)
 129 {
 130    etna_resource_used(ctx, prsc, ETNA_PENDING_READ);
 131 }
 132
 133 static inline void
 134 resource_written(struct etna_context *ctx, struct pipe_resource *prsc)
 135 {
 136    etna_resource_used(ctx, prsc, ETNA_PENDING_WRITE);
 137 }
 138
 139 /* Allocate Tile Status for an etna resource.
 140  * Tile status is a cache of the clear status per tile. This means a smaller
 141  * surface has to be cleared which is faster.
 142  * This is also called "fast clear". */
 143 bool
 144 etna_screen_resource_alloc_ts(struct pipe_screen *pscreen,
 145                               struct etna_resource *prsc);
 146
 147 struct pipe_resource *
 148 etna_resource_alloc(struct pipe_screen *pscreen, unsigned layout,
 149                     const struct pipe_resource *templat);
 150
 151 void
 152 etna_resource_screen_init(struct pipe_screen *pscreen);
 153
 154 #endif