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 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         pipe_reference_init(&mt->base.reference, 1);
  79         mt->base.screen = pscreen;
  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         if (pt->tex_usage & PIPE_TEXTURE_USAGE_DYNAMIC)
 110                 buf_usage |= PIPE_BUFFER_USAGE_CPU_READ_WRITE;
 111
 112         nv40_miptree_layout(mt);
 113
 114         mt->buffer = pscreen->buffer_create(pscreen, 256, buf_usage, 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 nv40_miptree_blanket(struct pipe_screen *pscreen, const struct pipe_texture *pt,
 125                      const unsigned *stride, struct pipe_buffer *pb)
 126 {
 127         struct nv40_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(nv40_miptree);
 135         if (!mt)
 136                 return NULL;
 137
 138         mt->base = *pt;
 139         pipe_reference_init(&mt->base.reference, 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         /* Assume whoever created this buffer expects it to be linear for now */
 145         mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
 146
 147         pipe_buffer_reference(&mt->buffer, pb);
 148         return &mt->base;
 149 }
 150
 151 static void
 152 nv40_miptree_destroy(struct pipe_texture *pt)
 153 {
 154         struct nv40_miptree *mt = (struct nv40_miptree *)pt;
 155         int l;
 156
 157         pipe_buffer_reference(&mt->buffer, NULL);
 158         for (l = 0; l <= pt->last_level; l++) {
 159                 if (mt->level[l].image_offset)
 160                         FREE(mt->level[l].image_offset);
 161         }
 162
 163         FREE(mt);
 164 }
 165
 166 static struct pipe_surface *
 167 nv40_miptree_surface_new(struct pipe_screen *pscreen, struct pipe_texture *pt,
 168                          unsigned face, unsigned level, unsigned zslice,
 169                          unsigned flags)
 170 {
 171         struct nv40_miptree *mt = (struct nv40_miptree *)pt;
 172         struct nv04_surface *ns;
 173
 174         ns = CALLOC_STRUCT(nv04_surface);
 175         if (!ns)
 176                 return NULL;
 177         pipe_texture_reference(&ns->base.texture, pt);
 178         ns->base.format = pt->format;
 179         ns->base.width = pt->width[level];
 180         ns->base.height = pt->height[level];
 181         ns->base.usage = flags;
 182         pipe_reference_init(&ns->base.reference, 1);
 183         ns->base.face = face;
 184         ns->base.level = level;
 185         ns->base.zslice = zslice;
 186         ns->pitch = mt->level[level].pitch;
 187
 188         if (pt->target == PIPE_TEXTURE_CUBE) {
 189                 ns->base.offset = mt->level[level].image_offset[face];
 190         } else
 191         if (pt->target == PIPE_TEXTURE_3D) {
 192                 ns->base.offset = mt->level[level].image_offset[zslice];
 193         } else {
 194                 ns->base.offset = mt->level[level].image_offset[0];
 195         }
 196
 197         return &ns->base;
 198 }
 199
 200 static void
 201 nv40_miptree_surface_del(struct pipe_surface *ps)
 202 {
 203         pipe_texture_reference(&ps->texture, NULL);
 204         FREE(ps);
 205 }
 206
 207 void
 208 nv40_screen_init_miptree_functions(struct pipe_screen *pscreen)
 209 {
 210         pscreen->texture_create = nv40_miptree_create;
 211         pscreen->texture_blanket = nv40_miptree_blanket;
 212         pscreen->texture_destroy = nv40_miptree_destroy;
 213         pscreen->get_tex_surface = nv40_miptree_surface_new;
 214         pscreen->tex_surface_destroy = nv40_miptree_surface_del;
 215 }
 216