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 nv04_miptree *mt;
  45
  46         mt = MALLOC(sizeof(struct nv04_miptree));
  47         if (!mt)
  48                 return NULL;
  49         mt->base = *pt;
  50         pipe_reference_init(&mt->base.reference, 1);
  51         mt->base.screen = pscreen;
  52
  53         //mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
  54
  55         nv04_miptree_layout(mt);
  56
  57         mt->buffer = pscreen->buffer_create(pscreen, 256, PIPE_BUFFER_USAGE_PIXEL |
  58                                                 NOUVEAU_BUFFER_USAGE_TEXTURE,
  59                                                 mt->total_size);
  60         if (!mt->buffer) {
  61                 printf("failed %d byte alloc\n",mt->total_size);
  62                 FREE(mt);
  63                 return NULL;
  64         }
  65
  66         return &mt->base;
  67 }
  68
  69 static struct pipe_texture *
  70 nv04_miptree_blanket(struct pipe_screen *pscreen, const struct pipe_texture *pt,
  71                      const unsigned *stride, struct pipe_buffer *pb)
  72 {
  73         struct nv04_miptree *mt;
  74
  75         /* Only supports 2D, non-mipmapped textures for the moment */
  76         if (pt->target != PIPE_TEXTURE_2D || pt->last_level != 0 ||
  77             pt->depth[0] != 1)
  78                 return NULL;
  79
  80         mt = CALLOC_STRUCT(nv04_miptree);
  81         if (!mt)
  82                 return NULL;
  83
  84         mt->base = *pt;
  85         pipe_reference_init(&mt->base.reference, 1);
  86         mt->base.screen = pscreen;
  87         mt->level[0].pitch = stride[0];
  88         mt->level[0].image_offset = CALLOC(1, sizeof(unsigned));
  89
  90         pipe_buffer_reference(&mt->buffer, pb);
  91         return &mt->base;
  92 }
  93
  94 static void
  95 nv04_miptree_destroy(struct pipe_texture *pt)
  96 {
  97         struct nv04_miptree *mt = (struct nv04_miptree *)pt;
  98         int l;
  99
 100         pipe_buffer_reference(&mt->buffer, NULL);
 101         for (l = 0; l <= pt->last_level; l++) {
 102                 if (mt->level[l].image_offset)
 103                         FREE(mt->level[l].image_offset);
 104         }
 105
 106         FREE(mt);
 107 }
 108
 109 static struct pipe_surface *
 110 nv04_miptree_surface_new(struct pipe_screen *pscreen, struct pipe_texture *pt,
 111                          unsigned face, unsigned level, unsigned zslice,
 112                          unsigned flags)
 113 {
 114         struct nv04_miptree *nv04mt = (struct nv04_miptree *)pt;
 115         struct nv04_surface *ns;
 116
 117         ns = CALLOC_STRUCT(nv04_surface);
 118         if (!ns)
 119                 return NULL;
 120         pipe_texture_reference(&ns->base.texture, pt);
 121         ns->base.format = pt->format;
 122         ns->base.width = pt->width[level];
 123         ns->base.height = pt->height[level];
 124         ns->base.usage = flags;
 125         pipe_reference_init(&ns->base.reference, 1);
 126         ns->base.face = face;
 127         ns->base.level = level;
 128         ns->base.zslice = zslice;
 129         ns->pitch = nv04mt->level[level].pitch;
 130
 131         ns->base.offset = nv04mt->level[level].image_offset;
 132
 133         return &ns->base;
 134 }
 135
 136 static void
 137 nv04_miptree_surface_del(struct pipe_surface *ps)
 138 {
 139         pipe_texture_reference(&ps->texture, NULL);
 140         FREE(ps);
 141 }
 142
 143 void
 144 nv04_screen_init_miptree_functions(struct pipe_screen *pscreen)
 145 {
 146         pscreen->texture_create = nv04_miptree_create;
 147         pscreen->texture_blanket = nv04_miptree_blanket;
 148         pscreen->texture_destroy = nv04_miptree_destroy;
 149         pscreen->get_tex_surface = nv04_miptree_surface_new;
 150         pscreen->tex_surface_destroy = nv04_miptree_surface_del;
 151 }
 152