src/gallium/drivers/nv30/nv30_miptree.c

   1 #include "pipe/p_state.h"
   2 #include "pipe/p_defines.h"
   3 #include "pipe/p_inlines.h"
   4
   5 #include "nv30_context.h"
   6
   7 static void
   8 nv30_miptree_layout(struct nv30_miptree *nv30mt)
   9 {
  10         struct pipe_texture *pt = &nv30mt->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;
  14         uint wide_pitch = pt->tex_usage & (PIPE_TEXTURE_USAGE_SAMPLER |
  15                                            PIPE_TEXTURE_USAGE_DEPTH_STENCIL |
  16                                            PIPE_TEXTURE_USAGE_RENDER_TARGET |
  17                                            PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
  18                                            PIPE_TEXTURE_USAGE_PRIMARY);
  19
  20         if (pt->target == PIPE_TEXTURE_CUBE) {
  21                 nr_faces = 6;
  22         } else
  23         if (pt->target == PIPE_TEXTURE_3D) {
  24                 nr_faces = pt->depth[0];
  25         } else {
  26                 nr_faces = 1;
  27         }
  28
  29         for (l = 0; l <= pt->last_level; l++) {
  30                 pt->width[l] = width;
  31                 pt->height[l] = height;
  32                 pt->depth[l] = depth;
  33                 pt->nblocksx[l] = pf_get_nblocksx(&pt->block, width);
  34                 pt->nblocksy[l] = pf_get_nblocksy(&pt->block, height);
  35
  36                 if (wide_pitch && (pt->tex_usage & NOUVEAU_TEXTURE_USAGE_LINEAR))
  37                         nv30mt->level[l].pitch = align(pt->width[0] * pt->block.size, 64);
  38                 else
  39                         nv30mt->level[l].pitch = pt->width[l] * pt->block.size;
  40
  41                 nv30mt->level[l].image_offset =
  42                         CALLOC(nr_faces, sizeof(unsigned));
  43
  44                 width  = MAX2(1, width  >> 1);
  45                 height = MAX2(1, height >> 1);
  46                 depth  = MAX2(1, depth  >> 1);
  47         }
  48
  49         for (f = 0; f < nr_faces; f++) {
  50                 for (l = 0; l < pt->last_level; l++) {
  51                         nv30mt->level[l].image_offset[f] = offset;
  52
  53                         if (!(pt->tex_usage & NOUVEAU_TEXTURE_USAGE_LINEAR))
  54                                 offset += align(nv30mt->level[l].pitch * pt->height[l], 64);
  55                         else
  56                                 offset += nv30mt->level[l].pitch * pt->height[l];
  57                 }
  58
  59                 nv30mt->level[l].image_offset[f] = offset;
  60                 offset += nv30mt->level[l].pitch * pt->height[l];
  61         }
  62
  63         nv30mt->total_size = offset;
  64 }
  65
  66 static struct pipe_texture *
  67 nv30_miptree_create(struct pipe_screen *pscreen, const struct pipe_texture *pt)
  68 {
  69         struct pipe_winsys *ws = pscreen->winsys;
  70         struct nv30_miptree *mt;
  71
  72         mt = MALLOC(sizeof(struct nv30_miptree));
  73         if (!mt)
  74                 return NULL;
  75         mt->base = *pt;
  76         mt->base.refcount = 1;
  77         mt->base.screen = pscreen;
  78         mt->shadow_tex = NULL;
  79         mt->shadow_surface = NULL;
  80
  81         /* Swizzled textures must be POT */
  82         if (pt->width[0] & (pt->width[0] - 1) ||
  83             pt->height[0] & (pt->height[0] - 1))
  84                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
  85         else
  86         if (pt->tex_usage & (PIPE_TEXTURE_USAGE_PRIMARY |
  87 +                            PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
  88 +                            PIPE_TEXTURE_USAGE_DEPTH_STENCIL))
  89                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
  90         else
  91         if (pt->tex_usage & PIPE_TEXTURE_USAGE_DYNAMIC)
  92                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
  93         else {
  94                 switch (pt->format) {
  95                 /* TODO: Figure out which formats can be swizzled */
  96                 case PIPE_FORMAT_A8R8G8B8_UNORM:
  97                 case PIPE_FORMAT_X8R8G8B8_UNORM:
  98                 case PIPE_FORMAT_R16_SNORM:
  99                 {
 100                         if (debug_get_bool_option("NOUVEAU_NO_SWIZZLE", FALSE))
 101                                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
 102                         break;
 103                 }
 104                 default:
 105                         mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
 106                 }
 107         }
 108
 109         nv30_miptree_layout(mt);
 110
 111         mt->buffer = ws->buffer_create(ws, 256,
 112                                        PIPE_BUFFER_USAGE_PIXEL |
 113                                        NOUVEAU_BUFFER_USAGE_TEXTURE,
 114                                        mt->total_size);
 115         if (!mt->buffer) {
 116                 FREE(mt);
 117                 return NULL;
 118         }
 119
 120         return &mt->base;
 121 }
 122
 123 static struct pipe_texture *
 124 nv30_miptree_blanket(struct pipe_screen *pscreen, const struct pipe_texture *pt,
 125                      const unsigned *stride, struct pipe_buffer *pb)
 126 {
 127         struct nv30_miptree *mt;
 128
 129         /* Only supports 2D, non-mipmapped textures for the moment */
 130         if (pt->target != PIPE_TEXTURE_2D || pt->last_level != 0 ||
 131             pt->depth[0] != 1)
 132                 return NULL;
 133
 134         mt = CALLOC_STRUCT(nv30_miptree);
 135         if (!mt)
 136                 return NULL;
 137
 138         mt->base = *pt;
 139         mt->base.refcount = 1;
 140         mt->base.screen = pscreen;
 141         mt->level[0].pitch = stride[0];
 142         mt->level[0].image_offset = CALLOC(1, sizeof(unsigned));
 143
 144         pipe_buffer_reference(pscreen, &mt->buffer, pb);
 145         return &mt->base;
 146 }
 147
 148 static void
 149 nv30_miptree_release(struct pipe_screen *pscreen, struct pipe_texture **ppt)
 150 {
 151         struct pipe_texture *pt = *ppt;
 152         struct nv30_miptree *mt = (struct nv30_miptree *)pt;
 153         int l;
 154
 155         *ppt = NULL;
 156         if (--pt->refcount)
 157                 return;
 158
 159         pipe_buffer_reference(pscreen, &mt->buffer, NULL);
 160         for (l = 0; l <= pt->last_level; l++) {
 161                 if (mt->level[l].image_offset)
 162                         FREE(mt->level[l].image_offset);
 163         }
 164
 165         if (mt->shadow_tex) {
 166                 if (mt->shadow_surface)
 167                         pscreen->tex_surface_release(pscreen, &mt->shadow_surface);
 168                 nv30_miptree_release(pscreen, &mt->shadow_tex);
 169         }
 170
 171         FREE(mt);
 172 }
 173
 174 static struct pipe_surface *
 175 nv30_miptree_surface_new(struct pipe_screen *pscreen, struct pipe_texture *pt,
 176                          unsigned face, unsigned level, unsigned zslice,
 177                          unsigned flags)
 178 {
 179         struct nv30_miptree *nv30mt = (struct nv30_miptree *)pt;
 180         struct pipe_surface *ps;
 181
 182         ps = CALLOC_STRUCT(pipe_surface);
 183         if (!ps)
 184                 return NULL;
 185         pipe_texture_reference(&ps->texture, pt);
 186         ps->format = pt->format;
 187         ps->width = pt->width[level];
 188         ps->height = pt->height[level];
 189         ps->block = pt->block;
 190         ps->nblocksx = pt->nblocksx[level];
 191         ps->nblocksy = pt->nblocksy[level];
 192         ps->stride = nv30mt->level[level].pitch;
 193         ps->usage = flags;
 194         ps->status = PIPE_SURFACE_STATUS_DEFINED;
 195         ps->refcount = 1;
 196         ps->face = face;
 197         ps->level = level;
 198         ps->zslice = zslice;
 199
 200         if (pt->target == PIPE_TEXTURE_CUBE) {
 201                 ps->offset = nv30mt->level[level].image_offset[face];
 202         } else
 203         if (pt->target == PIPE_TEXTURE_3D) {
 204                 ps->offset = nv30mt->level[level].image_offset[zslice];
 205         } else {
 206                 ps->offset = nv30mt->level[level].image_offset[0];
 207         }
 208
 209         return ps;
 210 }
 211
 212 static void
 213 nv30_miptree_surface_del(struct pipe_screen *pscreen,
 214                          struct pipe_surface **psurface)
 215 {
 216         struct pipe_surface *ps = *psurface;
 217
 218         *psurface = NULL;
 219         if (--ps->refcount > 0)
 220                 return;
 221
 222         pipe_texture_reference(&ps->texture, NULL);
 223         FREE(ps);
 224 }
 225
 226 void
 227 nv30_screen_init_miptree_functions(struct pipe_screen *pscreen)
 228 {
 229         pscreen->texture_create = nv30_miptree_create;
 230         pscreen->texture_blanket = nv30_miptree_blanket;
 231         pscreen->texture_release = nv30_miptree_release;
 232         pscreen->get_tex_surface = nv30_miptree_surface_new;
 233         pscreen->tex_surface_release = nv30_miptree_surface_del;
 234 }