src/gallium/drivers/nvfx/nvfx_miptree.c

   1 #include "pipe/p_state.h"
   2 #include "pipe/p_defines.h"
   3 #include "util/u_inlines.h"
   4 #include "util/u_format.h"
   5 #include "util/u_math.h"
   6
   7 #include "nvfx_context.h"
   8 #include "nvfx_resource.h"
   9 #include "nvfx_transfer.h"
  10 #include "nv04_surface_2d.h"
  11
  12 /* Currently using separate implementations for buffers and textures,
  13  * even though gallium has a unified abstraction of these objects.
  14  * Eventually these should be combined, and mechanisms like transfers
  15  * be adapted to work for both buffer and texture uploads.
  16  */
  17
  18 static void
  19 nvfx_miptree_layout(struct nvfx_miptree *mt)
  20 {
  21         struct pipe_resource *pt = &mt->base.base;
  22         uint width = pt->width0;
  23         uint offset = 0;
  24         int nr_faces, l, f;
  25         uint wide_pitch = pt->bind & (PIPE_BIND_SAMPLER_VIEW |
  26                                       PIPE_BIND_DEPTH_STENCIL |
  27                                       PIPE_BIND_RENDER_TARGET |
  28                                       PIPE_BIND_DISPLAY_TARGET |
  29                                       PIPE_BIND_SCANOUT);
  30
  31         if (pt->target == PIPE_TEXTURE_CUBE) {
  32                 nr_faces = 6;
  33         } else
  34         if (pt->target == PIPE_TEXTURE_3D) {
  35                 nr_faces = pt->depth0;
  36         } else {
  37                 nr_faces = 1;
  38         }
  39
  40         for (l = 0; l <= pt->last_level; l++) {
  41                 if (wide_pitch && (pt->flags & NVFX_RESOURCE_FLAG_LINEAR))
  42                         mt->level[l].pitch = align(util_format_get_stride(pt->format, pt->width0), 64);
  43                 else
  44                         mt->level[l].pitch = util_format_get_stride(pt->format, width);
  45
  46                 mt->level[l].image_offset =
  47                         CALLOC(nr_faces, sizeof(unsigned));
  48
  49                 width  = u_minify(width, 1);
  50         }
  51
  52         for (f = 0; f < nr_faces; f++) {
  53                 for (l = 0; l < pt->last_level; l++) {
  54                         mt->level[l].image_offset[f] = offset;
  55
  56                         if (!(pt->flags & NVFX_RESOURCE_FLAG_LINEAR) &&
  57                             u_minify(pt->width0, l + 1) > 1 && u_minify(pt->height0, l + 1) > 1)
  58                                 offset += align(mt->level[l].pitch * u_minify(pt->height0, l), 64);
  59                         else
  60                                 offset += mt->level[l].pitch * u_minify(pt->height0, l);
  61                 }
  62
  63                 mt->level[l].image_offset[f] = offset;
  64                 offset += mt->level[l].pitch * u_minify(pt->height0, l);
  65         }
  66
  67         mt->total_size = offset;
  68 }
  69
  70 static boolean
  71 nvfx_miptree_get_handle(struct pipe_screen *pscreen,
  72                         struct pipe_resource *ptexture,
  73                         struct winsys_handle *whandle)
  74 {
  75         struct nvfx_miptree* mt = (struct nvfx_miptree*)ptexture;
  76
  77         if (!mt || !mt->base.bo)
  78                 return FALSE;
  79
  80         return nouveau_screen_bo_get_handle(pscreen,
  81                                             mt->base.bo,
  82                                             mt->level[0].pitch,
  83                                             whandle);
  84 }
  85
  86
  87 static void
  88 nvfx_miptree_destroy(struct pipe_screen *screen, struct pipe_resource *pt)
  89 {
  90         struct nvfx_miptree *mt = (struct nvfx_miptree *)pt;
  91         int l;
  92
  93         nouveau_screen_bo_release(screen, mt->base.bo);
  94
  95         for (l = 0; l <= pt->last_level; l++) {
  96                 if (mt->level[l].image_offset)
  97                         FREE(mt->level[l].image_offset);
  98         }
  99
 100         FREE(mt);
 101 }
 102
 103
 104
 105
 106 struct u_resource_vtbl nvfx_miptree_vtbl =
 107 {
 108    nvfx_miptree_get_handle,           /* get_handle */
 109    nvfx_miptree_destroy,              /* resource_destroy */
 110    NULL,                              /* is_resource_referenced */
 111    nvfx_miptree_transfer_new,         /* get_transfer */
 112    nvfx_miptree_transfer_del,     /* transfer_destroy */
 113    nvfx_miptree_transfer_map,         /* transfer_map */
 114    u_default_transfer_flush_region,   /* transfer_flush_region */
 115    nvfx_miptree_transfer_unmap,       /* transfer_unmap */
 116    u_default_transfer_inline_write    /* transfer_inline_write */
 117 };
 118
 119
 120
 121 struct pipe_resource *
 122 nvfx_miptree_create(struct pipe_screen *pscreen, const struct pipe_resource *pt)
 123 {
 124         struct nvfx_miptree *mt;
 125         static int no_swizzle = -1;
 126         if(no_swizzle < 0)
 127                 no_swizzle = debug_get_bool_option("NOUVEAU_NO_SWIZZLE", FALSE);
 128
 129         mt = CALLOC_STRUCT(nvfx_miptree);
 130         if (!mt)
 131                 return NULL;
 132
 133         mt->base.base = *pt;
 134         mt->base.vtbl = &nvfx_miptree_vtbl;
 135         pipe_reference_init(&mt->base.base.reference, 1);
 136         mt->base.base.screen = pscreen;
 137
 138         /* Swizzled textures must be POT */
 139         if (pt->width0 & (pt->width0 - 1) ||
 140             pt->height0 & (pt->height0 - 1))
 141                 mt->base.base.flags |= NVFX_RESOURCE_FLAG_LINEAR;
 142         else
 143         if (pt->bind & (PIPE_BIND_SCANOUT |
 144                         PIPE_BIND_DISPLAY_TARGET |
 145                         PIPE_BIND_DEPTH_STENCIL))
 146                 mt->base.base.flags |= NVFX_RESOURCE_FLAG_LINEAR;
 147         else
 148         if (pt->usage == PIPE_USAGE_DYNAMIC)
 149                 mt->base.base.flags |= NVFX_RESOURCE_FLAG_LINEAR;
 150         else {
 151                 switch (pt->format) {
 152                 case PIPE_FORMAT_B5G6R5_UNORM:
 153                 case PIPE_FORMAT_L8A8_UNORM:
 154                 case PIPE_FORMAT_A8_UNORM:
 155                 case PIPE_FORMAT_L8_UNORM:
 156                 case PIPE_FORMAT_I8_UNORM:
 157                         /* TODO: we can actually swizzle these formats on nv40, we
 158                                 are just preserving the pre-unification behavior.
 159                                 The whole 2D code is going to be rewritten anyway. */
 160                         if(nvfx_screen(pscreen)->is_nv4x) {
 161                                 mt->base.base.flags |= NVFX_RESOURCE_FLAG_LINEAR;
 162                                 break;
 163                         }
 164                 /* TODO: Figure out which formats can be swizzled */
 165                 case PIPE_FORMAT_B8G8R8A8_UNORM:
 166                 case PIPE_FORMAT_B8G8R8X8_UNORM:
 167                 case PIPE_FORMAT_R16_SNORM:
 168                 {
 169                         if (no_swizzle)
 170                                 mt->base.base.flags |= NVFX_RESOURCE_FLAG_LINEAR;
 171                         break;
 172                 }
 173                 default:
 174                         mt->base.base.flags |= NVFX_RESOURCE_FLAG_LINEAR;
 175                 }
 176         }
 177
 178         /* apparently we can't render to swizzled surfaces smaller than 64 bytes, so make them linear.
 179          * If the user did not ask for a render target, they can still render to it, but it will cost them an extra copy.
 180          * This also happens for small mipmaps of large textures. */
 181         if (pt->bind & PIPE_BIND_RENDER_TARGET &&
 182             util_format_get_stride(pt->format, pt->width0) < 64)
 183                 mt->base.base.flags |= NVFX_RESOURCE_FLAG_LINEAR;
 184
 185         nvfx_miptree_layout(mt);
 186
 187         mt->base.bo = nouveau_screen_bo_new(pscreen, 256,
 188             pt->usage, pt->bind, mt->total_size);
 189         if (!mt->base.bo) {
 190                 FREE(mt);
 191                 return NULL;
 192         }
 193         return &mt->base.base;
 194 }
 195
 196
 197
 198
 199 struct pipe_resource *
 200 nvfx_miptree_from_handle(struct pipe_screen *pscreen,
 201                          const struct pipe_resource *template,
 202                          struct winsys_handle *whandle)
 203 {
 204         struct nvfx_miptree *mt;
 205         unsigned stride;
 206
 207         /* Only supports 2D, non-mipmapped textures for the moment */
 208         if (template->target != PIPE_TEXTURE_2D ||
 209             template->last_level != 0 ||
 210             template->depth0 != 1)
 211                 return NULL;
 212
 213         mt = CALLOC_STRUCT(nvfx_miptree);
 214         if (!mt)
 215                 return NULL;
 216
 217         mt->base.bo = nouveau_screen_bo_from_handle(pscreen, whandle, &stride);
 218         if (mt->base.bo == NULL) {
 219                 FREE(mt);
 220                 return NULL;
 221         }
 222
 223         mt->base.base = *template;
 224         mt->base.vtbl = &nvfx_miptree_vtbl;
 225         pipe_reference_init(&mt->base.base.reference, 1);
 226         mt->base.base.screen = pscreen;
 227         mt->level[0].pitch = stride;
 228         mt->level[0].image_offset = CALLOC(1, sizeof(unsigned));
 229
 230         /* Assume whoever created this buffer expects it to be linear for now */
 231         mt->base.base.flags |= NVFX_RESOURCE_FLAG_LINEAR;
 232
 233         /* XXX: Need to adjust bo refcount??
 234          */
 235         /* nouveau_bo_ref(bo, &mt->base.bo); */
 236         return &mt->base.base;
 237 }
 238
 239
 240
 241
 242
 243 /* Surface helpers, not strictly required to implement the resource vtbl:
 244  */
 245 struct pipe_surface *
 246 nvfx_miptree_surface_new(struct pipe_screen *pscreen, struct pipe_resource *pt,
 247                          unsigned face, unsigned level, unsigned zslice,
 248                          unsigned flags)
 249 {
 250         struct nvfx_miptree *mt = (struct nvfx_miptree *)pt;
 251         struct nv04_surface *ns;
 252
 253         ns = CALLOC_STRUCT(nv04_surface);
 254         if (!ns)
 255                 return NULL;
 256         pipe_resource_reference(&ns->base.texture, pt);
 257         ns->base.format = pt->format;
 258         ns->base.width = u_minify(pt->width0, level);
 259         ns->base.height = u_minify(pt->height0, level);
 260         ns->base.usage = flags;
 261         pipe_reference_init(&ns->base.reference, 1);
 262         ns->base.face = face;
 263         ns->base.level = level;
 264         ns->base.zslice = zslice;
 265         ns->pitch = mt->level[level].pitch;
 266
 267         if (pt->target == PIPE_TEXTURE_CUBE) {
 268                 ns->base.offset = mt->level[level].image_offset[face];
 269         } else
 270         if (pt->target == PIPE_TEXTURE_3D) {
 271                 ns->base.offset = mt->level[level].image_offset[zslice];
 272         } else {
 273                 ns->base.offset = mt->level[level].image_offset[0];
 274         }
 275
 276         /* create a linear temporary that we can render into if
 277          * necessary.
 278          *
 279          * Note that ns->pitch is always a multiple of 64 for linear
 280          * surfaces and swizzled surfaces are POT, so ns->pitch & 63
 281          * is equivalent to (ns->pitch < 64 && swizzled)
 282          */
 283
 284         if ((ns->pitch & 63) &&
 285             (ns->base.usage & PIPE_BIND_RENDER_TARGET))
 286         {
 287                 struct nv04_surface_2d* eng2d  =
 288                         ((struct nvfx_screen*)pscreen)->eng2d;
 289
 290                 ns = nv04_surface_wrap_for_render(pscreen, eng2d, ns);
 291         }
 292
 293         return &ns->base;
 294 }
 295
 296 void
 297 nvfx_miptree_surface_del(struct pipe_surface *ps)
 298 {
 299         struct nv04_surface* ns = (struct nv04_surface*)ps;
 300         if(ns->backing)
 301         {
 302                 struct nvfx_screen* screen = (struct nvfx_screen*)ps->texture->screen;
 303                 if(ns->backing->base.usage & PIPE_BIND_BLIT_DESTINATION)
 304                         screen->eng2d->copy(screen->eng2d, &ns->backing->base, 0, 0, ps, 0, 0, ns->base.width, ns->base.height);
 305                 nvfx_miptree_surface_del(&ns->backing->base);
 306         }
 307
 308         pipe_resource_reference(&ps->texture, NULL);
 309         FREE(ps);
 310 }