src/gallium/drivers/nv40/nv40_miptree.c

   1 #include "pipe/p_state.h"
   2 #include "pipe/p_defines.h"
   3 #include "pipe/p_inlines.h"
   4
   5 #include "nv40_context.h"
   6
   7 static void
   8 nv40_miptree_layout(struct nv40_miptree *mt)
   9 {
  10         struct pipe_texture *pt = &mt->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                         mt->level[l].pitch = align(pt->width[0] * pt->block.size, 64);
  38                 else
  39                         mt->level[l].pitch = pt->width[l] * pt->block.size;
  40
  41                 mt->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                         mt->level[l].image_offset[f] = offset;
  52
  53                         if (!(pt->tex_usage & NOUVEAU_TEXTURE_USAGE_LINEAR) &&
  54                             pt->width[l + 1] > 1 && pt->height[l + 1] > 1)
  55                                 offset += align(mt->level[l].pitch * pt->height[l], 64);
  56                         else
  57                                 offset += mt->level[l].pitch * pt->height[l];
  58                 }
  59
  60                 mt->level[l].image_offset[f] = offset;
  61                 offset += mt->level[l].pitch * pt->height[l];
  62         }
  63
  64         mt->total_size = offset;
  65 }
  66
  67 static struct pipe_texture *
  68 nv40_miptree_create(struct pipe_screen *pscreen, const struct pipe_texture *pt)
  69 {
  70         struct pipe_winsys *ws = pscreen->winsys;
  71         struct nv40_miptree *mt;
  72         unsigned buf_usage = PIPE_BUFFER_USAGE_PIXEL |
  73                              NOUVEAU_BUFFER_USAGE_TEXTURE;
  74
  75         mt = MALLOC(sizeof(struct nv40_miptree));
  76         if (!mt)
  77                 return NULL;
  78         mt->base = *pt;
  79         mt->base.refcount = 1;
  80         mt->base.screen = pscreen;
  81         mt->shadow_tex = NULL;
  82         mt->shadow_surface = NULL;
  83
  84         /* Swizzled textures must be POT */
  85         if (pt->width[0] & (pt->width[0] - 1) ||
  86             pt->height[0] & (pt->height[0] - 1))
  87                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
  88         else
  89         if (pt->tex_usage & (PIPE_TEXTURE_USAGE_PRIMARY |
  90                              PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
  91                              PIPE_TEXTURE_USAGE_DEPTH_STENCIL))
  92                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
  93         else
  94         if (pt->tex_usage & PIPE_TEXTURE_USAGE_DYNAMIC)
  95                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
  96         else {
  97                 switch (pt->format) {
  98                 /* TODO: Figure out which formats can be swizzled */
  99                 case PIPE_FORMAT_A8R8G8B8_UNORM:
 100                 case PIPE_FORMAT_X8R8G8B8_UNORM:
 101                 case PIPE_FORMAT_R16_SNORM:
 102                 {
 103                         if (debug_get_bool_option("NOUVEAU_NO_SWIZZLE", FALSE))
 104                                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
 105                         break;
 106                 }
 107                 default:
 108                         mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
 109                 }
 110         }
 111
 112         if (pt->tex_usage & PIPE_TEXTURE_USAGE_DYNAMIC)
 113                 buf_usage |= PIPE_BUFFER_USAGE_CPU_READ_WRITE;
 114
 115         nv40_miptree_layout(mt);
 116
 117         mt->buffer = ws->buffer_create(ws, 256, buf_usage, mt->total_size);
 118         if (!mt->buffer) {
 119                 FREE(mt);
 120                 return NULL;
 121         }
 122
 123         return &mt->base;
 124 }
 125
 126 static struct pipe_texture *
 127 nv40_miptree_blanket(struct pipe_screen *pscreen, const struct pipe_texture *pt,
 128                      const unsigned *stride, struct pipe_buffer *pb)
 129 {
 130         struct nv40_miptree *mt;
 131
 132         /* Only supports 2D, non-mipmapped textures for the moment */
 133         if (pt->target != PIPE_TEXTURE_2D || pt->last_level != 0 ||
 134             pt->depth[0] != 1)
 135                 return NULL;
 136
 137         mt = CALLOC_STRUCT(nv40_miptree);
 138         if (!mt)
 139                 return NULL;
 140
 141         mt->base = *pt;
 142         mt->base.refcount = 1;
 143         mt->base.screen = pscreen;
 144         mt->level[0].pitch = stride[0];
 145         mt->level[0].image_offset = CALLOC(1, sizeof(unsigned));
 146
 147         pipe_buffer_reference(pscreen, &mt->buffer, pb);
 148         return &mt->base;
 149 }
 150
 151 static void
 152 nv40_miptree_release(struct pipe_screen *pscreen, struct pipe_texture **ppt)
 153 {
 154         struct pipe_texture *pt = *ppt;
 155         struct nv40_miptree *mt = (struct nv40_miptree *)pt;
 156         int l;
 157
 158         *ppt = NULL;
 159         if (--pt->refcount)
 160                 return;
 161
 162         pipe_buffer_reference(pscreen, &mt->buffer, NULL);
 163         for (l = 0; l <= pt->last_level; l++) {
 164                 if (mt->level[l].image_offset)
 165                         FREE(mt->level[l].image_offset);
 166         }
 167
 168         if (mt->shadow_tex) {
 169                 if (mt->shadow_surface)
 170                         pscreen->tex_surface_release(pscreen, &mt->shadow_surface);
 171                 nv40_miptree_release(pscreen, &mt->shadow_tex);
 172         }
 173
 174         FREE(mt);
 175 }
 176
 177 static struct pipe_surface *
 178 nv40_miptree_surface_new(struct pipe_screen *pscreen, struct pipe_texture *pt,
 179                          unsigned face, unsigned level, unsigned zslice,
 180                          unsigned flags)
 181 {
 182         struct nv40_miptree *mt = (struct nv40_miptree *)pt;
 183         struct pipe_surface *ps;
 184
 185         ps = CALLOC_STRUCT(pipe_surface);
 186         if (!ps)
 187                 return NULL;
 188         pipe_texture_reference(&ps->texture, pt);
 189         ps->format = pt->format;
 190         ps->width = pt->width[level];
 191         ps->height = pt->height[level];
 192         ps->block = pt->block;
 193         ps->nblocksx = pt->nblocksx[level];
 194         ps->nblocksy = pt->nblocksy[level];
 195         ps->stride = mt->level[level].pitch;
 196         ps->usage = flags;
 197         ps->status = PIPE_SURFACE_STATUS_DEFINED;
 198         ps->refcount = 1;
 199         ps->face = face;
 200         ps->level = level;
 201         ps->zslice = zslice;
 202
 203         if (pt->target == PIPE_TEXTURE_CUBE) {
 204                 ps->offset = mt->level[level].image_offset[face];
 205         } else
 206         if (pt->target == PIPE_TEXTURE_3D) {
 207                 ps->offset = mt->level[level].image_offset[zslice];
 208         } else {
 209                 ps->offset = mt->level[level].image_offset[0];
 210         }
 211
 212         return ps;
 213 }
 214
 215 static void
 216 nv40_miptree_surface_del(struct pipe_screen *pscreen,
 217                          struct pipe_surface **psurface)
 218 {
 219         struct pipe_surface *ps = *psurface;
 220
 221         *psurface = NULL;
 222         if (--ps->refcount > 0)
 223                 return;
 224
 225         pipe_texture_reference(&ps->texture, NULL);
 226         FREE(ps);
 227 }
 228
 229 void
 230 nv40_screen_init_miptree_functions(struct pipe_screen *pscreen)
 231 {
 232         pscreen->texture_create = nv40_miptree_create;
 233         pscreen->texture_blanket = nv40_miptree_blanket;
 234         pscreen->texture_release = nv40_miptree_release;
 235         pscreen->get_tex_surface = nv40_miptree_surface_new;
 236         pscreen->tex_surface_release = nv40_miptree_surface_del;
 237 }
 238