src/gallium/drivers/nvc0/nvc0_miptree.c

   1 /*
   2  * Copyright 2008 Ben Skeggs
   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, sublicense,
   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 shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  18  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
  19  * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  20  * SOFTWARE.
  21  */
  22
  23 #include "pipe/p_state.h"
  24 #include "pipe/p_defines.h"
  25 #include "util/u_inlines.h"
  26 #include "util/u_format.h"
  27
  28 #include "nvc0_context.h"
  29 #include "nvc0_resource.h"
  30 #include "nvc0_transfer.h"
  31
  32 static INLINE uint32_t
  33 get_tile_dims(unsigned nx, unsigned ny, unsigned nz)
  34 {
  35    uint32_t tile_mode = 0x000;
  36
  37    if (ny > 64) tile_mode = 0x040; /* height 128 tiles */
  38    else
  39    if (ny > 32) tile_mode = 0x030; /* height 64 tiles */
  40    else
  41    if (ny > 16) tile_mode = 0x020; /* height 32 tiles */
  42    else
  43    if (ny >  8) tile_mode = 0x010; /* height 16 tiles */
  44
  45    if (nz == 1)
  46       return tile_mode;
  47    else
  48    if (tile_mode > 0x020)
  49       tile_mode = 0x020;
  50
  51    if (nz > 16 && tile_mode < 0x020)
  52       return tile_mode | 0x500; /* depth 32 tiles */
  53    if (nz > 8) return tile_mode | 0x400; /* depth 16 tiles */
  54    if (nz > 4) return tile_mode | 0x300; /* depth 8 tiles */
  55    if (nz > 2) return tile_mode | 0x200; /* depth 4 tiles */
  56
  57    return tile_mode | 0x100;
  58 }
  59
  60 static INLINE unsigned
  61 calc_zslice_offset(uint32_t tile_mode, unsigned z, unsigned pitch, unsigned nbh)
  62 {
  63    unsigned tile_h = NVC0_TILE_HEIGHT(tile_mode);
  64    unsigned tile_d_shift = NVC0_TILE_DIM_SHIFT(tile_mode, 2);
  65    unsigned tile_d = 1 << tile_d_shift;
  66
  67    /* stride_2d == to next slice within this volume tile */
  68    /* stride_3d == size (in bytes) of a volume tile */
  69    unsigned stride_2d = tile_h * NVC0_TILE_PITCH(tile_mode);
  70    unsigned stride_3d = tile_d * align(nbh, tile_h) * pitch;
  71
  72    return (z & (tile_d - 1)) * stride_2d + (z >> tile_d_shift) * stride_3d;
  73 }
  74
  75 static void
  76 nvc0_miptree_destroy(struct pipe_screen *pscreen, struct pipe_resource *pt)
  77 {
  78    struct nvc0_miptree *mt = nvc0_miptree(pt);
  79
  80    nouveau_screen_bo_release(pscreen, mt->base.bo);
  81
  82    FREE(mt);
  83 }
  84
  85 static boolean
  86 nvc0_miptree_get_handle(struct pipe_screen *pscreen,
  87                         struct pipe_resource *pt,
  88                         struct winsys_handle *whandle)
  89 {
  90    struct nvc0_miptree *mt = nvc0_miptree(pt);
  91    unsigned stride;
  92
  93    if (!mt || !mt->base.bo)
  94       return FALSE;
  95
  96    stride = util_format_get_stride(mt->base.base.format,
  97                                    mt->base.base.width0);
  98
  99    return nouveau_screen_bo_get_handle(pscreen,
 100                                        mt->base.bo,
 101                                        stride,
 102                                        whandle);
 103 }
 104
 105 const struct u_resource_vtbl nvc0_miptree_vtbl =
 106 {
 107    nvc0_miptree_get_handle,         /* get_handle */
 108    nvc0_miptree_destroy,            /* resource_destroy */
 109    NULL,                            /* is_resource_referenced */
 110    nvc0_miptree_transfer_new,       /* get_transfer */
 111    nvc0_miptree_transfer_del,       /* transfer_destroy */
 112    nvc0_miptree_transfer_map,         /* transfer_map */
 113    u_default_transfer_flush_region, /* transfer_flush_region */
 114    nvc0_miptree_transfer_unmap,     /* transfer_unmap */
 115    u_default_transfer_inline_write  /* transfer_inline_write */
 116 };
 117
 118 struct pipe_resource *
 119 nvc0_miptree_create(struct pipe_screen *pscreen,
 120                     const struct pipe_resource *templ)
 121 {
 122    struct nouveau_device *dev = nouveau_screen(pscreen)->device;
 123    struct nvc0_miptree *mt = CALLOC_STRUCT(nvc0_miptree);
 124    struct pipe_resource *pt = &mt->base.base;
 125    int ret;
 126    unsigned w, h, d, l, alloc_size;
 127    uint32_t tile_flags;
 128
 129    if (!mt)
 130       return NULL;
 131
 132    mt->base.vtbl = &nvc0_miptree_vtbl;
 133    *pt = *templ;
 134    pipe_reference_init(&pt->reference, 1);
 135    pt->screen = pscreen;
 136
 137    mt->layout_3d = pt->target == PIPE_TEXTURE_3D;
 138
 139    w = pt->width0;
 140    h = pt->height0;
 141    d = mt->layout_3d ? pt->depth0 : 1;
 142
 143    switch (pt->format) {
 144    case PIPE_FORMAT_Z16_UNORM:
 145       tile_flags = 0x0700; /* COMPRESSED */
 146       tile_flags = 0x0200; /* NORMAL ? */
 147       tile_flags = 0x0100; /* NORMAL ? */
 148       break;
 149    case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
 150       tile_flags = 0x5300; /* MSAA 4, COMPRESSED */
 151       tile_flags = 0x4600; /* NORMAL */
 152       break;
 153    case PIPE_FORMAT_Z24X8_UNORM:
 154    case PIPE_FORMAT_Z24_UNORM_S8_USCALED:
 155       tile_flags = 0x1100; /* NORMAL */
 156       if (w * h >= 128 * 128 && 0)
 157          tile_flags = 0x1700; /* COMPRESSED, requires magic */
 158       break;
 159    case PIPE_FORMAT_R32G32B32A32_FLOAT:
 160       tile_flags = 0xf500; /* COMPRESSED */
 161       tile_flags = 0xf700; /* MSAA 2 */
 162       tile_flags = 0xf900; /* MSAA 4 */
 163       tile_flags = 0xfe00; /* NORMAL */
 164       break;
 165    case PIPE_FORMAT_Z32_FLOAT_S8X24_USCALED:
 166       tile_flags = 0xce00; /* COMPRESSED */
 167       tile_flags = 0xcf00; /* MSAA 2, COMPRESSED */
 168       tile_flags = 0xd000; /* MSAA 4, COMPRESSED */
 169       tile_flags = 0xc300; /* NORMAL */
 170       break;
 171    case PIPE_FORMAT_R16G16B16A16_UNORM:
 172       tile_flags = 0xe900; /* COMPRESSED */
 173       break;
 174    default:
 175       tile_flags = 0xe000; /* MSAA 4, COMPRESSED 32 BIT */
 176       tile_flags = 0xfe00; /* NORMAL 32 BIT */
 177       if (w * h >= 128 * 128 && 0)
 178          tile_flags = 0xdb00; /* COMPRESSED 32 BIT, requires magic */
 179       break;
 180    }
 181
 182    /* For 3D textures, a mipmap is spanned by all the layers, for array
 183     * textures and cube maps, each layer contains its own mipmaps.
 184     */
 185    for (l = 0; l <= pt->last_level; ++l) {
 186       struct nvc0_miptree_level *lvl = &mt->level[l];
 187       unsigned nbx = util_format_get_nblocksx(pt->format, w);
 188       unsigned nby = util_format_get_nblocksy(pt->format, h);
 189       unsigned blocksize = util_format_get_blocksize(pt->format);
 190
 191       lvl->offset = mt->total_size;
 192       lvl->tile_mode = get_tile_dims(nbx, nby, d);
 193       lvl->pitch = align(nbx * blocksize, NVC0_TILE_PITCH(lvl->tile_mode));
 194
 195       mt->total_size += lvl->pitch *
 196          align(nby, NVC0_TILE_HEIGHT(lvl->tile_mode)) *
 197          align(d, NVC0_TILE_DEPTH(lvl->tile_mode));
 198
 199       w = u_minify(w, 1);
 200       h = u_minify(h, 1);
 201       d = u_minify(d, 1);
 202    }
 203
 204    if (pt->array_size > 1) {
 205       mt->layer_stride = align(mt->total_size,
 206                                NVC0_TILE_SIZE(mt->level[0].tile_mode));
 207       mt->total_size = mt->layer_stride * pt->array_size;
 208    }
 209
 210    alloc_size = mt->total_size;
 211    if (tile_flags == 0x1700)
 212       alloc_size *= 3; /* HiZ, XXX: correct size */
 213
 214    ret = nouveau_bo_new_tile(dev, NOUVEAU_BO_VRAM, 256, alloc_size,
 215                              mt->level[0].tile_mode, tile_flags,
 216                              &mt->base.bo);
 217    if (ret) {
 218       FREE(mt);
 219       return NULL;
 220    }
 221    mt->base.domain = NOUVEAU_BO_VRAM;
 222
 223    return pt;
 224 }
 225
 226 struct pipe_resource *
 227 nvc0_miptree_from_handle(struct pipe_screen *pscreen,
 228                          const struct pipe_resource *templ,
 229                          struct winsys_handle *whandle)
 230 {
 231    struct nvc0_miptree *mt;
 232    unsigned stride;
 233
 234    /* only supports 2D, non-mipmapped textures for the moment */
 235    if ((templ->target != PIPE_TEXTURE_2D &&
 236         templ->target != PIPE_TEXTURE_RECT) ||
 237        templ->last_level != 0 ||
 238        templ->depth0 != 1 ||
 239        templ->array_size > 1)
 240       return NULL;
 241
 242    mt = CALLOC_STRUCT(nvc0_miptree);
 243    if (!mt)
 244       return NULL;
 245
 246    mt->base.bo = nouveau_screen_bo_from_handle(pscreen, whandle, &stride);
 247    if (mt->base.bo == NULL) {
 248       FREE(mt);
 249       return NULL;
 250    }
 251
 252    mt->base.base = *templ;
 253    mt->base.vtbl = &nvc0_miptree_vtbl;
 254    pipe_reference_init(&mt->base.base.reference, 1);
 255    mt->base.base.screen = pscreen;
 256    mt->level[0].pitch = stride;
 257    mt->level[0].offset = 0;
 258    mt->level[0].tile_mode = mt->base.bo->tile_mode;
 259
 260    /* no need to adjust bo reference count */
 261    return &mt->base.base;
 262 }
 263
 264
 265 /* Surface functions.
 266  */
 267
 268 struct pipe_surface *
 269 nvc0_miptree_surface_new(struct pipe_context *pipe,
 270                          struct pipe_resource *pt,
 271                          const struct pipe_surface *templ)
 272 {
 273    struct nvc0_miptree *mt = nvc0_miptree(pt); /* guaranteed */
 274    struct nvc0_surface *ns;
 275    struct pipe_surface *ps;
 276    struct nvc0_miptree_level *lvl = &mt->level[templ->u.tex.level];
 277
 278    ns = CALLOC_STRUCT(nvc0_surface);
 279    if (!ns)
 280       return NULL;
 281    ps = &ns->base;
 282
 283    pipe_reference_init(&ps->reference, 1);
 284    pipe_resource_reference(&ps->texture, pt);
 285    ps->context = pipe;
 286    ps->format = pt->format;
 287    ps->usage = templ->usage;
 288    ps->u.tex.level = templ->u.tex.level;
 289    ps->u.tex.first_layer = templ->u.tex.first_layer;
 290    ps->u.tex.last_layer = templ->u.tex.last_layer;
 291
 292    ns->width = u_minify(pt->width0, ps->u.tex.level);
 293    ns->height = u_minify(pt->height0, ps->u.tex.level);
 294    ns->depth = ps->u.tex.last_layer - ps->u.tex.first_layer + 1;
 295    ns->offset = lvl->offset;
 296
 297    /* comment says there are going to be removed, but they're used by the st */
 298    ps->width = ns->width;
 299    ps->height = ns->height;
 300
 301    if (mt->layout_3d) {
 302       unsigned zslice = ps->u.tex.first_layer;
 303
 304       /* TODO: re-layout the texture to use only depth 1 tiles in this case: */
 305       if (ns->depth > 1 && (zslice & (NVC0_TILE_DEPTH(lvl->tile_mode) - 1)))
 306          NOUVEAU_ERR("Creating unsupported 3D surface of slices [%u:%u].\n",
 307                      zslice, ps->u.tex.last_layer);
 308
 309       ns->offset += calc_zslice_offset(lvl->tile_mode, zslice, lvl->pitch,
 310                                        util_format_get_nblocksy(pt->format,
 311                                                                 ns->height));
 312    } else {
 313       ns->offset += mt->layer_stride * ps->u.tex.first_layer;
 314    }
 315
 316    return ps;
 317 }
 318
 319 void
 320 nvc0_miptree_surface_del(struct pipe_context *pipe, struct pipe_surface *ps)
 321 {
 322    struct nvc0_surface *s = nvc0_surface(ps);
 323
 324    pipe_resource_reference(&ps->texture, NULL);
 325
 326    FREE(s);
 327 }