src/gallium/drivers/nv40/nv40_miptree.c

   1 #include "pipe/p_state.h"
   2 #include "pipe/p_defines.h"
   3 #include "pipe/p_inlines.h"
   4
   5 #include "nv40_context.h"
   6
   7 static void
   8 nv40_miptree_layout(struct nv40_miptree *mt)
   9 {
  10         struct pipe_texture *pt = &mt->base;
  11         uint width = pt->width[0], height = pt->height[0], depth = pt->depth[0];
  12         uint offset = 0;
  13         int nr_faces, l, f, pitch;
  14
  15         if (pt->target == PIPE_TEXTURE_CUBE) {
  16                 nr_faces = 6;
  17         } else
  18         if (pt->target == PIPE_TEXTURE_3D) {
  19                 nr_faces = pt->depth[0];
  20         } else {
  21                 nr_faces = 1;
  22         }
  23
  24         pitch = pt->width[0];
  25         for (l = 0; l <= pt->last_level; l++) {
  26                 pt->width[l] = width;
  27                 pt->height[l] = height;
  28                 pt->depth[l] = depth;
  29                 pt->nblocksx[l] = pf_get_nblocksx(&pt->block, width);
  30                 pt->nblocksy[l] = pf_get_nblocksy(&pt->block, height);
  31
  32                 if (!(pt->tex_usage & NOUVEAU_TEXTURE_USAGE_LINEAR))
  33                         pitch = pt->nblocksx[l];
  34                 pitch = align(pitch, 64);
  35
  36                 mt->level[l].pitch = pitch * pt->block.size;
  37                 mt->level[l].image_offset =
  38                         CALLOC(nr_faces, sizeof(unsigned));
  39
  40                 width  = MAX2(1, width  >> 1);
  41                 height = MAX2(1, height >> 1);
  42                 depth  = MAX2(1, depth  >> 1);
  43         }
  44
  45         for (f = 0; f < nr_faces; f++) {
  46                 for (l = 0; l <= pt->last_level; l++) {
  47                         mt->level[l].image_offset[f] = offset;
  48                         offset += mt->level[l].pitch * pt->height[l];
  49                 }
  50         }
  51
  52         mt->total_size = offset;
  53 }
  54
  55 static struct pipe_texture *
  56 nv40_miptree_create(struct pipe_screen *pscreen, const struct pipe_texture *pt)
  57 {
  58         struct pipe_winsys *ws = pscreen->winsys;
  59         struct nv40_miptree *mt;
  60
  61         mt = MALLOC(sizeof(struct nv40_miptree));
  62         if (!mt)
  63                 return NULL;
  64         mt->base = *pt;
  65         mt->base.refcount = 1;
  66         mt->base.screen = pscreen;
  67         mt->shadow_tex = NULL;
  68         mt->shadow_surface = NULL;
  69
  70         /* Swizzled textures must be POT */
  71         if (pt->width[0] & (pt->width[0] - 1) ||
  72             pt->height[0] & (pt->height[0] - 1))
  73                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
  74         else
  75         if (pt->tex_usage & (PIPE_TEXTURE_USAGE_PRIMARY |
  76                              PIPE_TEXTURE_USAGE_DISPLAY_TARGET))
  77                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
  78         else {
  79                 switch (pt->format) {
  80                 /* TODO: Figure out which formats can be swizzled */
  81                 case PIPE_FORMAT_A8R8G8B8_UNORM:
  82                 case PIPE_FORMAT_X8R8G8B8_UNORM:
  83                 /* XXX: Re-enable when SIFM size limits are fixed */
  84                 /*case PIPE_FORMAT_R16_SNORM:*/
  85                         break;
  86                 default:
  87                         mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
  88                 }
  89         }
  90
  91         nv40_miptree_layout(mt);
  92
  93         mt->buffer = ws->buffer_create(ws, 256,
  94                                        PIPE_BUFFER_USAGE_PIXEL |
  95                                        NOUVEAU_BUFFER_USAGE_TEXTURE,
  96                                        mt->total_size);
  97         if (!mt->buffer) {
  98                 FREE(mt);
  99                 return NULL;
 100         }
 101
 102         return &mt->base;
 103 }
 104
 105 static void
 106 nv40_miptree_release(struct pipe_screen *pscreen, struct pipe_texture **ppt)
 107 {
 108         struct pipe_texture *pt = *ppt;
 109         struct nv40_miptree *mt = (struct nv40_miptree *)pt;
 110         int l;
 111
 112         *ppt = NULL;
 113         if (--pt->refcount)
 114                 return;
 115
 116         pipe_buffer_reference(pscreen, &mt->buffer, NULL);
 117         for (l = 0; l <= pt->last_level; l++) {
 118                 if (mt->level[l].image_offset)
 119                         FREE(mt->level[l].image_offset);
 120         }
 121
 122         if (mt->shadow_tex) {
 123                 assert(mt->shadow_surface);
 124                 pscreen->tex_surface_release(pscreen, &mt->shadow_surface);
 125                 nv40_miptree_release(pscreen, &mt->shadow_tex);
 126         }
 127
 128         FREE(mt);
 129 }
 130
 131 static struct pipe_surface *
 132 nv40_miptree_surface_new(struct pipe_screen *pscreen, struct pipe_texture *pt,
 133                          unsigned face, unsigned level, unsigned zslice,
 134                          unsigned flags)
 135 {
 136         struct nv40_miptree *mt = (struct nv40_miptree *)pt;
 137         struct pipe_surface *ps;
 138
 139         ps = CALLOC_STRUCT(pipe_surface);
 140         if (!ps)
 141                 return NULL;
 142         pipe_texture_reference(&ps->texture, pt);
 143         pipe_buffer_reference(pscreen, &ps->buffer, mt->buffer);
 144         ps->format = pt->format;
 145         ps->width = pt->width[level];
 146         ps->height = pt->height[level];
 147         ps->block = pt->block;
 148         ps->nblocksx = pt->nblocksx[level];
 149         ps->nblocksy = pt->nblocksy[level];
 150         ps->stride = mt->level[level].pitch;
 151         ps->usage = flags;
 152         ps->status = PIPE_SURFACE_STATUS_DEFINED;
 153         ps->refcount = 1;
 154         ps->winsys = pscreen->winsys;
 155         ps->face = face;
 156         ps->level = level;
 157         ps->zslice = zslice;
 158
 159         if (pt->target == PIPE_TEXTURE_CUBE) {
 160                 ps->offset = mt->level[level].image_offset[face];
 161         } else
 162         if (pt->target == PIPE_TEXTURE_3D) {
 163                 ps->offset = mt->level[level].image_offset[zslice];
 164         } else {
 165                 ps->offset = mt->level[level].image_offset[0];
 166         }
 167
 168         return ps;
 169 }
 170
 171 static void
 172 nv40_miptree_surface_del(struct pipe_screen *pscreen,
 173                          struct pipe_surface **psurface)
 174 {
 175         struct pipe_surface *ps = *psurface;
 176
 177         *psurface = NULL;
 178         if (--ps->refcount > 0)
 179                 return;
 180
 181         pipe_texture_reference(&ps->texture, NULL);
 182         pipe_buffer_reference(pscreen, &ps->buffer, NULL);
 183         FREE(ps);
 184 }
 185
 186 void
 187 nv40_screen_init_miptree_functions(struct pipe_screen *pscreen)
 188 {
 189         pscreen->texture_create = nv40_miptree_create;
 190         pscreen->texture_release = nv40_miptree_release;
 191         pscreen->get_tex_surface = nv40_miptree_surface_new;
 192         pscreen->tex_surface_release = nv40_miptree_surface_del;
 193 }
 194