src/gallium/drivers/nv50/nv50_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 "nv50_context.h"
  29 #include "nv50_resource.h"
  30 #include "nv50_transfer.h"
  31
  32 static INLINE uint32_t
  33 get_tile_dims(unsigned nx, unsigned ny, unsigned nz)
  34 {
  35    uint32_t tile_mode = 0x00;
  36
  37    if (ny > 32) tile_mode = 0x04; /* height 128 tiles */
  38    else
  39    if (ny > 16) tile_mode = 0x03; /* height 64 tiles */
  40    else
  41    if (ny >  8) tile_mode = 0x02; /* height 32 tiles */
  42    else
  43    if (ny >  4) tile_mode = 0x01; /* height 16 tiles */
  44
  45    if (nz == 1)
  46       return tile_mode;
  47    else
  48    if (tile_mode > 0x02)
  49       tile_mode = 0x02;
  50
  51    if (nz > 16 && tile_mode < 0x02)
  52       return tile_mode | 0x50; /* depth 32 tiles */
  53    if (nz > 8) return tile_mode | 0x40; /* depth 16 tiles */
  54    if (nz > 4) return tile_mode | 0x30; /* depth 8 tiles */
  55    if (nz > 2) return tile_mode | 0x20; /* depth 4 tiles */
  56
  57    return tile_mode | 0x10;
  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 = NV50_TILE_HEIGHT(tile_mode);
  64    unsigned tile_d_shift = NV50_TILE_DIM_SHIFT(tile_mode, 1);
  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 * NV50_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 nv50_miptree_destroy(struct pipe_screen *pscreen, struct pipe_resource *pt)
  77 {
  78    struct nv50_miptree *mt = nv50_miptree(pt);
  79
  80    nouveau_screen_bo_release(pscreen, mt->base.bo);
  81
  82    FREE(mt);
  83 }
  84
  85 static boolean
  86 nv50_miptree_get_handle(struct pipe_screen *pscreen,
  87                         struct pipe_resource *pt,
  88                         struct winsys_handle *whandle)
  89 {
  90    struct nv50_miptree *mt = nv50_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 nv50_miptree_vtbl =
 106 {
 107    nv50_miptree_get_handle,         /* get_handle */
 108    nv50_miptree_destroy,            /* resource_destroy */
 109    nv50_miptree_transfer_new,       /* get_transfer */
 110    nv50_miptree_transfer_del,       /* transfer_destroy */
 111    nv50_miptree_transfer_map,         /* transfer_map */
 112    u_default_transfer_flush_region, /* transfer_flush_region */
 113    nv50_miptree_transfer_unmap,     /* transfer_unmap */
 114    u_default_transfer_inline_write  /* transfer_inline_write */
 115 };
 116
 117 struct pipe_resource *
 118 nv50_miptree_create(struct pipe_screen *pscreen,
 119                     const struct pipe_resource *templ)
 120 {
 121    struct nouveau_device *dev = nouveau_screen(pscreen)->device;
 122    struct nv50_miptree *mt = CALLOC_STRUCT(nv50_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 = &nv50_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 = 0x6c00;
 145       break;
 146    case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
 147       tile_flags = 0x1800;
 148       break;
 149    case PIPE_FORMAT_Z24X8_UNORM:
 150    case PIPE_FORMAT_Z24_UNORM_S8_USCALED:
 151       tile_flags = 0x2800;
 152       break;
 153    case PIPE_FORMAT_R32G32B32A32_FLOAT:
 154    case PIPE_FORMAT_R32G32B32_FLOAT:
 155       tile_flags = 0x7400;
 156       break;
 157    case PIPE_FORMAT_Z32_FLOAT_S8X24_USCALED:
 158       tile_flags = 0x6000;
 159       break;
 160    default:
 161       if ((pt->bind & PIPE_BIND_SCANOUT) &&
 162           util_format_get_blocksizebits(pt->format) == 32)
 163          tile_flags = 0x7a00;
 164       else
 165          tile_flags = 0x7000;
 166       break;
 167    }
 168
 169    /* For 3D textures, a mipmap is spanned by all the layers, for array
 170     * textures and cube maps, each layer contains its own mipmaps.
 171     */
 172    for (l = 0; l <= pt->last_level; ++l) {
 173       struct nv50_miptree_level *lvl = &mt->level[l];
 174       unsigned nbx = util_format_get_nblocksx(pt->format, w);
 175       unsigned nby = util_format_get_nblocksy(pt->format, h);
 176       unsigned blocksize = util_format_get_blocksize(pt->format);
 177
 178       lvl->offset = mt->total_size;
 179       lvl->tile_mode = get_tile_dims(nbx, nby, d);
 180       lvl->pitch = align(nbx * blocksize, NV50_TILE_PITCH(lvl->tile_mode));
 181
 182       mt->total_size += lvl->pitch *
 183          align(nby, NV50_TILE_HEIGHT(lvl->tile_mode)) *
 184          align(d, NV50_TILE_DEPTH(lvl->tile_mode));
 185
 186       w = u_minify(w, 1);
 187       h = u_minify(h, 1);
 188       d = u_minify(d, 1);
 189    }
 190
 191    if (pt->array_size > 1) {
 192       mt->layer_stride = align(mt->total_size,
 193                                NV50_TILE_SIZE(mt->level[0].tile_mode));
 194       mt->total_size = mt->layer_stride * pt->array_size;
 195    }
 196
 197    alloc_size = mt->total_size;
 198
 199    ret = nouveau_bo_new_tile(dev, NOUVEAU_BO_VRAM, 256, alloc_size,
 200                              mt->level[0].tile_mode, tile_flags,
 201                              &mt->base.bo);
 202    if (ret) {
 203       FREE(mt);
 204       return NULL;
 205    }
 206    mt->base.domain = NOUVEAU_BO_VRAM;
 207
 208    return pt;
 209 }
 210
 211 struct pipe_resource *
 212 nv50_miptree_from_handle(struct pipe_screen *pscreen,
 213                          const struct pipe_resource *templ,
 214                          struct winsys_handle *whandle)
 215 {
 216    struct nv50_miptree *mt;
 217    unsigned stride;
 218
 219    /* only supports 2D, non-mipmapped textures for the moment */
 220    if ((templ->target != PIPE_TEXTURE_2D &&
 221         templ->target != PIPE_TEXTURE_RECT) ||
 222        templ->last_level != 0 ||
 223        templ->depth0 != 1 ||
 224        templ->array_size > 1)
 225       return NULL;
 226
 227    mt = CALLOC_STRUCT(nv50_miptree);
 228    if (!mt)
 229       return NULL;
 230
 231    mt->base.bo = nouveau_screen_bo_from_handle(pscreen, whandle, &stride);
 232    if (mt->base.bo == NULL) {
 233       FREE(mt);
 234       return NULL;
 235    }
 236
 237    mt->base.base = *templ;
 238    mt->base.vtbl = &nv50_miptree_vtbl;
 239    pipe_reference_init(&mt->base.base.reference, 1);
 240    mt->base.base.screen = pscreen;
 241    mt->level[0].pitch = stride;
 242    mt->level[0].offset = 0;
 243    mt->level[0].tile_mode = mt->base.bo->tile_mode;
 244
 245    /* no need to adjust bo reference count */
 246    return &mt->base.base;
 247 }
 248
 249
 250 /* Surface functions.
 251  */
 252
 253 struct pipe_surface *
 254 nv50_miptree_surface_new(struct pipe_context *pipe,
 255                          struct pipe_resource *pt,
 256                          const struct pipe_surface *templ)
 257 {
 258    struct nv50_miptree *mt = nv50_miptree(pt); /* guaranteed */
 259    struct nv50_surface *ns;
 260    struct pipe_surface *ps;
 261    struct nv50_miptree_level *lvl = &mt->level[templ->u.tex.level];
 262
 263    ns = CALLOC_STRUCT(nv50_surface);
 264    if (!ns)
 265       return NULL;
 266    ps = &ns->base;
 267
 268    pipe_reference_init(&ps->reference, 1);
 269    pipe_resource_reference(&ps->texture, pt);
 270    ps->context = pipe;
 271    ps->format = templ->format;
 272    ps->usage = templ->usage;
 273    ps->u.tex.level = templ->u.tex.level;
 274    ps->u.tex.first_layer = templ->u.tex.first_layer;
 275    ps->u.tex.last_layer = templ->u.tex.last_layer;
 276
 277    ns->width = u_minify(pt->width0, ps->u.tex.level);
 278    ns->height = u_minify(pt->height0, ps->u.tex.level);
 279    ns->depth = ps->u.tex.last_layer - ps->u.tex.first_layer + 1;
 280    ns->offset = lvl->offset;
 281
 282    /* comment says there are going to be removed, but they're used by the st */
 283    ps->width = ns->width;
 284    ps->height = ns->height;
 285
 286    if (mt->layout_3d) {
 287       unsigned zslice = ps->u.tex.first_layer;
 288
 289       /* TODO: re-layout the texture to use only depth 1 tiles in this case: */
 290       if (ns->depth > 1 && (zslice & (NV50_TILE_DEPTH(lvl->tile_mode) - 1)))
 291          NOUVEAU_ERR("Creating unsupported 3D surface of slices [%u:%u].\n",
 292                      zslice, ps->u.tex.last_layer);
 293
 294       ns->offset += calc_zslice_offset(lvl->tile_mode, zslice, lvl->pitch,
 295                                        util_format_get_nblocksy(pt->format,
 296                                                                 ns->height));
 297    } else {
 298       ns->offset += mt->layer_stride * ps->u.tex.first_layer;
 299    }
 300
 301    return ps;
 302 }
 303
 304 void
 305 nv50_miptree_surface_del(struct pipe_context *pipe, struct pipe_surface *ps)
 306 {
 307    struct nv50_surface *s = nv50_surface(ps);
 308
 309    pipe_resource_reference(&ps->texture, NULL);
 310
 311    FREE(s);
 312 }