src/gallium/drivers/ilo/ilo_resource.h

   1 /*
   2  * Mesa 3-D graphics library
   3  *
   4  * Copyright (C) 2012-2013 LunarG, Inc.
   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 shall be included
  14  * in all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  21  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  22  * DEALINGS IN THE SOFTWARE.
  23  *
  24  * Authors:
  25  *    Chia-I Wu <olv@lunarg.com>
  26  */
  27
  28 #ifndef ILO_RESOURCE_H
  29 #define ILO_RESOURCE_H
  30
  31 #include "intel_winsys.h"
  32
  33 #include "ilo_common.h"
  34 #include "ilo_screen.h"
  35
  36 enum ilo_texture_flags {
  37    ILO_TEXTURE_RENDER_WRITE   = 1 << 0,
  38    ILO_TEXTURE_BLT_WRITE      = 1 << 1,
  39    ILO_TEXTURE_CPU_WRITE      = 1 << 2,
  40    ILO_TEXTURE_RENDER_READ    = 1 << 3,
  41    ILO_TEXTURE_BLT_READ       = 1 << 4,
  42    ILO_TEXTURE_CPU_READ       = 1 << 5,
  43    ILO_TEXTURE_CLEAR          = 1 << 6,
  44    ILO_TEXTURE_HIZ            = 1 << 7,
  45 };
  46
  47 struct ilo_buffer {
  48    struct pipe_resource base;
  49
  50    struct intel_bo *bo;
  51    unsigned bo_size;
  52    unsigned bo_flags;
  53 };
  54
  55 /**
  56  * A 3D image slice, cube face, or array layer.
  57  */
  58 struct ilo_texture_slice {
  59    /* 2D offset to the slice */
  60    unsigned x, y;
  61    unsigned flags;
  62 };
  63
  64 struct ilo_texture {
  65    struct pipe_resource base;
  66
  67    bool imported;
  68    unsigned bo_flags;
  69
  70    enum pipe_format bo_format;
  71    struct intel_bo *bo;
  72
  73    /*
  74     * These are the values passed to or returned from winsys for bo
  75     * allocation.  As such,
  76     *
  77     *  - width and height are in blocks,
  78     *  - cpp is the block size in bytes, and
  79     *  - stride is the distance in bytes between two block rows.
  80     */
  81    int bo_width, bo_height, bo_cpp, bo_stride;
  82    enum intel_tiling_mode tiling;
  83
  84    bool compressed;
  85    unsigned block_width;
  86    unsigned block_height;
  87
  88    /* true if the mip level alignments are stricter */
  89    bool halign_8, valign_4;
  90    /* true if space is reserved between layers */
  91    bool array_spacing_full;
  92    /* true if samples are interleaved */
  93    bool interleaved;
  94
  95    struct ilo_texture_slice *slices[PIPE_MAX_TEXTURE_LEVELS];
  96
  97    struct ilo_texture *separate_s8;
  98
  99    struct {
 100       struct intel_bo *bo;
 101       int bo_stride;
 102    } hiz;
 103 };
 104
 105 static inline struct ilo_buffer *
 106 ilo_buffer(struct pipe_resource *res)
 107 {
 108    return (struct ilo_buffer *)
 109       ((res && res->target == PIPE_BUFFER) ? res : NULL);
 110 }
 111
 112 static inline struct ilo_texture *
 113 ilo_texture(struct pipe_resource *res)
 114 {
 115    return (struct ilo_texture *)
 116       ((res && res->target != PIPE_BUFFER) ? res : NULL);
 117 }
 118
 119 void
 120 ilo_init_resource_functions(struct ilo_screen *is);
 121
 122 bool
 123 ilo_buffer_alloc_bo(struct ilo_buffer *buf);
 124
 125 bool
 126 ilo_texture_alloc_bo(struct ilo_texture *tex);
 127
 128 static inline struct ilo_texture_slice *
 129 ilo_texture_get_slice(const struct ilo_texture *tex,
 130                       unsigned level, unsigned slice)
 131 {
 132    assert(level <= tex->base.last_level);
 133    assert(slice < ((tex->base.target == PIPE_TEXTURE_3D) ?
 134          u_minify(tex->base.depth0, level) : tex->base.array_size));
 135
 136    return &tex->slices[level][slice];
 137 }
 138
 139 unsigned
 140 ilo_texture_get_slice_offset(const struct ilo_texture *tex,
 141                              unsigned level, unsigned slice,
 142                              unsigned *x_offset, unsigned *y_offset);
 143
 144 static inline void
 145 ilo_texture_set_slice_flags(struct ilo_texture *tex, unsigned level,
 146                             unsigned first_slice, unsigned num_slices,
 147                             unsigned mask, unsigned value)
 148 {
 149    const struct ilo_texture_slice *last =
 150       ilo_texture_get_slice(tex, level, first_slice + num_slices - 1);
 151    struct ilo_texture_slice *slice =
 152       ilo_texture_get_slice(tex, level, first_slice);
 153
 154    while (slice <= last) {
 155       slice->flags = (slice->flags & ~mask) | (value & mask);
 156       slice++;
 157    }
 158 }
 159
 160 static inline bool
 161 ilo_texture_can_enable_hiz(const struct ilo_texture *tex, unsigned level,
 162                            unsigned first_slice, unsigned num_slices)
 163 {
 164    const struct ilo_screen *is = ilo_screen(tex->base.screen);
 165    const struct ilo_texture_slice *slice =
 166       ilo_texture_get_slice(tex, level, first_slice);
 167
 168    if (!tex->hiz.bo)
 169       return false;
 170
 171    /* we can adjust 3DSTATE_DEPTH_BUFFER for the first slice */
 172    if (level == 0 && first_slice == 0 && num_slices == 1)
 173       return true;
 174
 175    /* HiZ is non-mipmapped and non-array on GEN6 */
 176    assert(is->dev.gen > ILO_GEN(6));
 177
 178    /*
 179     * Either all or none of the slices in the same level have ILO_TEXTURE_HIZ
 180     * set.  It suffices to check only the first slice.
 181     */
 182    return (slice->flags & ILO_TEXTURE_HIZ);
 183 }
 184
 185 #endif /* ILO_RESOURCE_H */