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 get_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 = NVC0_TILE_DEPTH(tile_mode);
  65
  66    /* pitch_2d == to next slice within this volume tile */
  67    /* pitch_3d == size (in bytes) of a volume tile */
  68    unsigned pitch_2d = tile_h * NVC0_TILE_PITCH(tile_mode);
  69    unsigned pitch_3d = tile_d * align(nbh, tile_h) * pitch;
  70
  71    return (z % tile_d) * pitch_2d + (z / tile_d) * pitch_3d;
  72 }
  73
  74 static void
  75 nvc0_miptree_destroy(struct pipe_screen *pscreen, struct pipe_resource *pt)
  76 {
  77    struct nvc0_miptree *mt = nvc0_miptree(pt);
  78
  79    nouveau_screen_bo_release(pscreen, mt->base.bo);
  80
  81    FREE(mt);
  82 }
  83
  84 static boolean
  85 nvc0_miptree_get_handle(struct pipe_screen *pscreen,
  86                         struct pipe_resource *pt,
  87                         struct winsys_handle *whandle)
  88 {
  89    struct nvc0_miptree *mt = nvc0_miptree(pt);
  90    unsigned stride;
  91
  92    if (!mt || !mt->base.bo)
  93       return FALSE;
  94
  95    stride = util_format_get_stride(mt->base.base.format,
  96                                    mt->base.base.width0);
  97
  98    return nouveau_screen_bo_get_handle(pscreen,
  99                                        mt->base.bo,
 100                                        stride,
 101                                        whandle);
 102 }
 103
 104 const struct u_resource_vtbl nvc0_miptree_vtbl =
 105 {
 106    nvc0_miptree_get_handle,         /* get_handle */
 107    nvc0_miptree_destroy,            /* resource_destroy */
 108    NULL,                            /* is_resource_referenced */
 109    nvc0_miptree_transfer_new,       /* get_transfer */
 110    nvc0_miptree_transfer_del,       /* transfer_destroy */
 111    nvc0_miptree_transfer_map,         /* transfer_map */
 112    u_default_transfer_flush_region, /* transfer_flush_region */
 113    nvc0_miptree_transfer_unmap,     /* transfer_unmap */
 114    u_default_transfer_inline_write  /* transfer_inline_write */
 115 };
 116
 117 struct pipe_resource *
 118 nvc0_miptree_create(struct pipe_screen *pscreen,
 119                     const struct pipe_resource *templ)
 120 {
 121    struct nouveau_device *dev = nouveau_screen(pscreen)->device;
 122    struct nvc0_miptree *mt = CALLOC_STRUCT(nvc0_miptree);
 123    struct pipe_resource *pt = &mt->base.base;
 124    int ret;
 125    unsigned w, h, d, l, alloc_size;
 126    uint32_t tile_flags;
 127
 128    if (!mt)
 129       return NULL;
 130
 131    mt->base.vtbl = &nvc0_miptree_vtbl;
 132    *pt = *templ;
 133    pipe_reference_init(&pt->reference, 1);
 134    pt->screen = pscreen;
 135
 136    mt->layout_3d = pt->target == PIPE_TEXTURE_3D;
 137
 138    w = pt->width0;
 139    h = pt->height0;
 140    d = mt->layout_3d ? pt->depth0 : 1;
 141
 142    switch (pt->format) {
 143    case PIPE_FORMAT_Z16_UNORM:
 144       tile_flags = 0x0700; /* COMPRESSED */
 145       tile_flags = 0x0200; /* NORMAL ? */
 146       tile_flags = 0x0100; /* NORMAL ? */
 147       break;
 148    case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
 149       tile_flags = 0x5300; /* MSAA 4, COMPRESSED */
 150       tile_flags = 0x4600; /* NORMAL */
 151       break;
 152    case PIPE_FORMAT_Z24X8_UNORM:
 153    case PIPE_FORMAT_Z24_UNORM_S8_USCALED:
 154       tile_flags = 0x1100; /* NORMAL */
 155       if (w * h >= 128 * 128 && 0)
 156          tile_flags = 0x1700; /* COMPRESSED, requires magic */
 157       break;
 158    case PIPE_FORMAT_R32G32B32A32_FLOAT:
 159       tile_flags = 0xf500; /* COMPRESSED */
 160       tile_flags = 0xf700; /* MSAA 2 */
 161       tile_flags = 0xf900; /* MSAA 4 */
 162       tile_flags = 0xfe00; /* NORMAL */
 163       break;
 164    case PIPE_FORMAT_Z32_FLOAT_S8X24_USCALED:
 165       tile_flags = 0xce00; /* COMPRESSED */
 166       tile_flags = 0xcf00; /* MSAA 2, COMPRESSED */
 167       tile_flags = 0xd000; /* MSAA 4, COMPRESSED */
 168       tile_flags = 0xc300; /* NORMAL */
 169       break;
 170    case PIPE_FORMAT_R16G16B16A16_UNORM:
 171       tile_flags = 0xe900; /* COMPRESSED */
 172       break;
 173    default:
 174       tile_flags = 0xe000; /* MSAA 4, COMPRESSED 32 BIT */
 175       tile_flags = 0xfe00; /* NORMAL 32 BIT */
 176       if (w * h >= 128 * 128 && 0)
 177          tile_flags = 0xdb00; /* COMPRESSED 32 BIT, requires magic */
 178       break;
 179    }
 180
 181    /* For 3D textures, a mipmap is spanned by all the layers, for array
 182     * textures and cube maps, each layer contains its own mipmaps.
 183     */
 184    for (l = 0; l <= pt->last_level; ++l) {
 185       struct nvc0_miptree_level *lvl = &mt->level[l];
 186       unsigned nbx = util_format_get_nblocksx(pt->format, w);
 187       unsigned nby = util_format_get_nblocksy(pt->format, h);
 188       unsigned blocksize = util_format_get_blocksize(pt->format);
 189
 190       lvl->offset = mt->total_size;
 191       lvl->tile_mode = get_tile_dims(nbx, nby, d);
 192       lvl->pitch = align(nbx * blocksize, NVC0_TILE_PITCH(lvl->tile_mode));
 193
 194       mt->total_size += lvl->pitch *
 195          align(nby, NVC0_TILE_HEIGHT(lvl->tile_mode)) *
 196          align(d, NVC0_TILE_DEPTH(lvl->tile_mode));
 197
 198       w = u_minify(w, 1);
 199       h = u_minify(h, 1);
 200       d = u_minify(d, 1);
 201    }
 202
 203    if (pt->array_size > 1) {
 204       mt->layer_stride = align(mt->total_size,
 205                                NVC0_TILE_SIZE(mt->level[0].tile_mode));
 206       mt->total_size = mt->layer_stride * pt->array_size;
 207    }
 208
 209    alloc_size = mt->total_size;
 210    if (tile_flags == 0x1700)
 211       alloc_size *= 3; /* HiZ, XXX: correct size */
 212
 213    ret = nouveau_bo_new_tile(dev, NOUVEAU_BO_VRAM, 256, alloc_size,
 214                              mt->level[0].tile_mode, tile_flags,
 215                              &mt->base.bo);
 216    if (ret) {
 217       FREE(mt);
 218       return NULL;
 219    }
 220    mt->base.domain = NOUVEAU_BO_VRAM;
 221
 222    return pt;
 223 }
 224
 225 struct pipe_resource *
 226 nvc0_miptree_from_handle(struct pipe_screen *pscreen,
 227                          const struct pipe_resource *templ,
 228                          struct winsys_handle *whandle)
 229 {
 230    struct nvc0_miptree *mt;
 231    unsigned stride;
 232
 233    /* only supports 2D, non-mipmapped textures for the moment */
 234    if ((templ->target != PIPE_TEXTURE_2D &&
 235         templ->target != PIPE_TEXTURE_RECT) ||
 236        templ->last_level != 0 ||
 237        templ->depth0 != 1 ||
 238        templ->array_size > 1)
 239       return NULL;
 240
 241    mt = CALLOC_STRUCT(nvc0_miptree);
 242    if (!mt)
 243       return NULL;
 244
 245    mt->base.bo = nouveau_screen_bo_from_handle(pscreen, whandle, &stride);
 246    if (mt->base.bo == NULL) {
 247       FREE(mt);
 248       return NULL;
 249    }
 250
 251    mt->base.base = *templ;
 252    mt->base.vtbl = &nvc0_miptree_vtbl;
 253    pipe_reference_init(&mt->base.base.reference, 1);
 254    mt->base.base.screen = pscreen;
 255    mt->level[0].pitch = stride;
 256    mt->level[0].offset = 0;
 257    mt->level[0].tile_mode = mt->base.bo->tile_mode;
 258
 259    /* no need to adjust bo reference count */
 260    return &mt->base.base;
 261 }
 262
 263
 264 /* Surface functions.
 265  */
 266
 267 struct pipe_surface *
 268 nvc0_miptree_surface_new(struct pipe_context *pipe,
 269                          struct pipe_resource *pt,
 270                          const struct pipe_surface *templ)
 271 {
 272    struct nvc0_miptree *mt = nvc0_miptree(pt); /* guaranteed */
 273    struct nvc0_surface *ns;
 274    struct pipe_surface *ps;
 275    struct nvc0_miptree_level *lvl = &mt->level[templ->u.tex.level];
 276
 277    ns = CALLOC_STRUCT(nvc0_surface);
 278    if (!ns)
 279       return NULL;
 280    ps = &ns->base;
 281
 282    pipe_reference_init(&ps->reference, 1);
 283    pipe_resource_reference(&ps->texture, pt);
 284    ps->context = pipe;
 285    ps->format = pt->format;
 286    ps->usage = templ->usage;
 287    ps->u.tex.level = templ->u.tex.level;
 288    ps->u.tex.first_layer = templ->u.tex.first_layer;
 289    ps->u.tex.last_layer = templ->u.tex.last_layer;
 290
 291    ns->width = u_minify(pt->width0, ps->u.tex.level);
 292    ns->height = u_minify(pt->height0, ps->u.tex.level);
 293    ns->depth = ps->u.tex.last_layer - ps->u.tex.first_layer + 1;
 294    ns->offset = lvl->offset;
 295
 296    /* comment says there are going to be removed, but they're used by the st */
 297    ps->width = ns->width;
 298    ps->height = ns->height;
 299
 300    if (mt->layout_3d) {
 301       ns->offset += get_zslice_offset(lvl->tile_mode, ps->u.tex.first_layer,
 302                                       lvl->pitch,
 303                                       util_format_get_nblocksy(pt->format,
 304                                                                ns->height));
 305    } else {
 306       ns->offset += mt->layer_stride * ps->u.tex.first_layer;
 307    }
 308
 309    return ps;
 310 }
 311
 312 void
 313 nvc0_miptree_surface_del(struct pipe_context *pipe, struct pipe_surface *ps)
 314 {
 315    struct nvc0_surface *s = nvc0_surface(ps);
 316
 317    pipe_resource_reference(&ps->texture, NULL);
 318
 319    FREE(s);
 320 }