src/gallium/drivers/nv04/nv04_miptree.c

   1 #include "pipe/p_state.h"
   2 #include "pipe/p_defines.h"
   3 #include "pipe/p_inlines.h"
   4
   5 #include "nv04_context.h"
   6 #include "nv04_screen.h"
   7
   8 static void
   9 nv04_miptree_layout(struct nv04_miptree *nv04mt)
  10 {
  11         struct pipe_texture *pt = &nv04mt->base;
  12         uint width = pt->width[0], height = pt->height[0];
  13         uint offset = 0;
  14         int nr_faces, l;
  15
  16         nr_faces = 1;
  17
  18         for (l = 0; l <= pt->last_level; l++) {
  19                 pt->width[l] = width;
  20                 pt->height[l] = height;
  21
  22                 pt->nblocksx[l] = pf_get_nblocksx(&pt->block, width);
  23                 pt->nblocksy[l] = pf_get_nblocksy(&pt->block, height);
  24
  25                 nv04mt->level[l].pitch = pt->width[0];
  26                 nv04mt->level[l].pitch = (nv04mt->level[l].pitch + 63) & ~63;
  27
  28                 width  = MAX2(1, width  >> 1);
  29                 height = MAX2(1, height >> 1);
  30         }
  31
  32         for (l = 0; l <= pt->last_level; l++) {
  33
  34                 nv04mt->level[l].image_offset = offset;
  35                 offset += nv04mt->level[l].pitch * pt->height[l];
  36         }
  37
  38         nv04mt->total_size = offset;
  39 }
  40
  41 static struct pipe_texture *
  42 nv04_miptree_create(struct pipe_screen *pscreen, const struct pipe_texture *pt)
  43 {
  44         struct pipe_winsys *ws = pscreen->winsys;
  45         struct nv04_miptree *mt;
  46
  47         mt = MALLOC(sizeof(struct nv04_miptree));
  48         if (!mt)
  49                 return NULL;
  50         mt->base = *pt;
  51         mt->base.refcount = 1;
  52         mt->base.screen = pscreen;
  53         mt->shadow_tex = NULL;
  54         mt->shadow_surface = NULL;
  55
  56         //mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
  57
  58         nv04_miptree_layout(mt);
  59
  60         mt->buffer = ws->buffer_create(ws, 256, PIPE_BUFFER_USAGE_PIXEL |
  61                                                 NOUVEAU_BUFFER_USAGE_TEXTURE,
  62                                                 mt->total_size);
  63         if (!mt->buffer) {
  64                 printf("failed %d byte alloc\n",mt->total_size);
  65                 FREE(mt);
  66                 return NULL;
  67         }
  68
  69         return &mt->base;
  70 }
  71
  72 static void
  73 nv04_miptree_release(struct pipe_screen *pscreen, struct pipe_texture **ppt)
  74 {
  75         struct pipe_texture *pt = *ppt;
  76         struct nv04_miptree *mt = (struct nv04_miptree *)pt;
  77         int l;
  78
  79         *ppt = NULL;
  80         if (--pt->refcount)
  81                 return;
  82
  83         pipe_buffer_reference(pscreen, &mt->buffer, NULL);
  84         for (l = 0; l <= pt->last_level; l++) {
  85                 if (mt->level[l].image_offset)
  86                         FREE(mt->level[l].image_offset);
  87         }
  88
  89         if (mt->shadow_tex) {
  90                 assert(mt->shadow_surface);
  91                 pscreen->tex_surface_release(pscreen, &mt->shadow_surface);
  92                 nv04_miptree_release(pscreen, &mt->shadow_tex);
  93         }
  94
  95         FREE(mt);
  96 }
  97
  98 static struct pipe_surface *
  99 nv04_miptree_surface_new(struct pipe_screen *pscreen, struct pipe_texture *pt,
 100                          unsigned face, unsigned level, unsigned zslice,
 101                          unsigned flags)
 102 {
 103         struct nv04_miptree *nv04mt = (struct nv04_miptree *)pt;
 104         struct pipe_surface *ps;
 105
 106         ps = CALLOC_STRUCT(pipe_surface);
 107         if (!ps)
 108                 return NULL;
 109         pipe_texture_reference(&ps->texture, pt);
 110         pipe_buffer_reference(pscreen, &ps->buffer, nv04mt->buffer);
 111         ps->format = pt->format;
 112         ps->width = pt->width[level];
 113         ps->height = pt->height[level];
 114         ps->block = pt->block;
 115         ps->nblocksx = pt->nblocksx[level];
 116         ps->nblocksy = pt->nblocksy[level];
 117         ps->stride = nv04mt->level[level].pitch;
 118         ps->usage = flags;
 119         ps->status = PIPE_SURFACE_STATUS_DEFINED;
 120         ps->refcount = 1;
 121         ps->face = face;
 122         ps->level = level;
 123         ps->zslice = zslice;
 124
 125         ps->offset = nv04mt->level[level].image_offset;
 126
 127         return ps;
 128 }
 129
 130 static void
 131 nv04_miptree_surface_del(struct pipe_screen *pscreen,
 132                          struct pipe_surface **psurface)
 133 {
 134         struct pipe_surface *ps = *psurface;
 135
 136         *psurface = NULL;
 137         if (--ps->refcount > 0)
 138                 return;
 139
 140         pipe_texture_reference(&ps->texture, NULL);
 141         pipe_buffer_reference(pscreen->winsys, &ps->buffer, NULL);
 142         FREE(ps);
 143 }
 144
 145 void
 146 nv04_screen_init_miptree_functions(struct pipe_screen *pscreen)
 147 {
 148         pscreen->texture_create = nv04_miptree_create;
 149         pscreen->texture_release = nv04_miptree_release;
 150         pscreen->get_tex_surface = nv04_miptree_surface_new;
 151         pscreen->tex_surface_release = nv04_miptree_surface_del;
 152 }
 153