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