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
  54         //mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
  55
  56         nv04_miptree_layout(mt);
  57
  58         mt->buffer = ws->buffer_create(ws, 256, PIPE_BUFFER_USAGE_PIXEL |
  59                                                 NOUVEAU_BUFFER_USAGE_TEXTURE,
  60                                                 mt->total_size);
  61         if (!mt->buffer) {
  62                 printf("failed %d byte alloc\n",mt->total_size);
  63                 FREE(mt);
  64                 return NULL;
  65         }
  66
  67         return &mt->base;
  68 }
  69
  70 static struct pipe_texture *
  71 nv04_miptree_blanket(struct pipe_screen *pscreen, const struct pipe_texture *pt,
  72                      const unsigned *stride, struct pipe_buffer *pb)
  73 {
  74         struct nv04_miptree *mt;
  75
  76         /* Only supports 2D, non-mipmapped textures for the moment */
  77         if (pt->target != PIPE_TEXTURE_2D || pt->last_level != 0 ||
  78             pt->depth[0] != 1)
  79                 return NULL;
  80
  81         mt = CALLOC_STRUCT(nv04_miptree);
  82         if (!mt)
  83                 return NULL;
  84
  85         mt->base = *pt;
  86         mt->base.refcount = 1;
  87         mt->base.screen = pscreen;
  88         mt->level[0].pitch = stride[0];
  89         mt->level[0].image_offset = CALLOC(1, sizeof(unsigned));
  90
  91         pipe_buffer_reference(pscreen, &mt->buffer, pb);
  92         return &mt->base;
  93 }
  94
  95 static void
  96 nv04_miptree_release(struct pipe_screen *pscreen, struct pipe_texture **ppt)
  97 {
  98         struct pipe_texture *pt = *ppt;
  99         struct nv04_miptree *mt = (struct nv04_miptree *)pt;
 100         int l;
 101
 102         *ppt = NULL;
 103         if (--pt->refcount)
 104                 return;
 105
 106         pipe_buffer_reference(pscreen, &mt->buffer, NULL);
 107         for (l = 0; l <= pt->last_level; l++) {
 108                 if (mt->level[l].image_offset)
 109                         FREE(mt->level[l].image_offset);
 110         }
 111
 112         FREE(mt);
 113 }
 114
 115 static struct pipe_surface *
 116 nv04_miptree_surface_new(struct pipe_screen *pscreen, struct pipe_texture *pt,
 117                          unsigned face, unsigned level, unsigned zslice,
 118                          unsigned flags)
 119 {
 120         struct nv04_miptree *nv04mt = (struct nv04_miptree *)pt;
 121         struct nv04_surface *ns;
 122
 123         ns = CALLOC_STRUCT(nv04_surface);
 124         if (!ns)
 125                 return NULL;
 126         pipe_texture_reference(&ns->base.texture, pt);
 127         ns->base.format = pt->format;
 128         ns->base.width = pt->width[level];
 129         ns->base.height = pt->height[level];
 130         ns->base.usage = flags;
 131         ns->base.status = PIPE_SURFACE_STATUS_DEFINED;
 132         ns->base.refcount = 1;
 133         ns->base.face = face;
 134         ns->base.level = level;
 135         ns->base.zslice = zslice;
 136         ns->pitch = nv04mt->level[level].pitch;
 137
 138         ns->base.offset = nv04mt->level[level].image_offset;
 139
 140         return &ns->base;
 141 }
 142
 143 static void
 144 nv04_miptree_surface_del(struct pipe_screen *pscreen,
 145                          struct pipe_surface **psurface)
 146 {
 147         struct pipe_surface *ps = *psurface;
 148
 149         *psurface = NULL;
 150         if (--ps->refcount > 0)
 151                 return;
 152
 153         pipe_texture_reference(&ps->texture, NULL);
 154         FREE(ps);
 155 }
 156
 157 void
 158 nv04_screen_init_miptree_functions(struct pipe_screen *pscreen)
 159 {
 160         pscreen->texture_create = nv04_miptree_create;
 161         pscreen->texture_blanket = nv04_miptree_blanket;
 162         pscreen->texture_release = nv04_miptree_release;
 163         pscreen->get_tex_surface = nv04_miptree_surface_new;
 164         pscreen->tex_surface_release = nv04_miptree_surface_del;
 165 }
 166