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 =
  35                         CALLOC(nr_faces, sizeof(unsigned));
  36                 offset += nv04mt->level[l].pitch * pt->height[l];
  37         }
  38
  39         nv04mt->total_size = offset;
  40 }
  41
  42 static struct pipe_texture *
  43 nv04_miptree_create(struct pipe_screen *pscreen, const struct pipe_texture *pt)
  44 {
  45         struct nv04_miptree *mt;
  46
  47         mt = MALLOC(sizeof(struct nv04_miptree));
  48         if (!mt)
  49                 return NULL;
  50         mt->base = *pt;
  51         pipe_reference_init(&mt->base.reference, 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 = pscreen->buffer_create(pscreen, 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         pipe_reference_init(&mt->base.reference, 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(&mt->buffer, pb);
  92         return &mt->base;
  93 }
  94
  95 static void
  96 nv04_miptree_destroy(struct pipe_texture *pt)
  97 {
  98         struct nv04_miptree *mt = (struct nv04_miptree *)pt;
  99         int l;
 100
 101         pipe_buffer_reference(&mt->buffer, NULL);
 102         for (l = 0; l <= pt->last_level; l++) {
 103                 if (mt->level[l].image_offset)
 104                         FREE(mt->level[l].image_offset);
 105         }
 106
 107         FREE(mt);
 108 }
 109
 110 static struct pipe_surface *
 111 nv04_miptree_surface_new(struct pipe_screen *pscreen, struct pipe_texture *pt,
 112                          unsigned face, unsigned level, unsigned zslice,
 113                          unsigned flags)
 114 {
 115         struct nv04_miptree *nv04mt = (struct nv04_miptree *)pt;
 116         struct nv04_surface *ns;
 117
 118         ns = CALLOC_STRUCT(nv04_surface);
 119         if (!ns)
 120                 return NULL;
 121         pipe_texture_reference(&ns->base.texture, pt);
 122         ns->base.format = pt->format;
 123         ns->base.width = pt->width[level];
 124         ns->base.height = pt->height[level];
 125         ns->base.usage = flags;
 126         pipe_reference_init(&ns->base.reference, 1);
 127         ns->base.face = face;
 128         ns->base.level = level;
 129         ns->base.zslice = zslice;
 130         ns->pitch = nv04mt->level[level].pitch;
 131
 132         ns->base.offset = nv04mt->level[level].image_offset;
 133
 134         return &ns->base;
 135 }
 136
 137 static void
 138 nv04_miptree_surface_del(struct pipe_surface *ps)
 139 {
 140         pipe_texture_reference(&ps->texture, NULL);
 141         FREE(ps);
 142 }
 143
 144 void
 145 nv04_screen_init_miptree_functions(struct pipe_screen *pscreen)
 146 {
 147         pscreen->texture_create = nv04_miptree_create;
 148         pscreen->texture_blanket = nv04_miptree_blanket;
 149         pscreen->texture_destroy = nv04_miptree_destroy;
 150         pscreen->get_tex_surface = nv04_miptree_surface_new;
 151         pscreen->tex_surface_destroy = nv04_miptree_surface_del;
 152 }
 153