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                             pt->width[l + 1] > 1 && pt->height[l + 1] > 1)
  55                                 offset += align(nv30mt->level[l].pitch * pt->height[l], 64);
  56                         else
  57                                 offset += nv30mt->level[l].pitch * pt->height[l];
  58                 }
  59
  60                 nv30mt->level[l].image_offset[f] = offset;
  61                 offset += nv30mt->level[l].pitch * pt->height[l];
  62         }
  63
  64         nv30mt->total_size = offset;
  65 }
  66
  67 static struct pipe_texture *
  68 nv30_miptree_create(struct pipe_screen *pscreen, const struct pipe_texture *pt)
  69 {
  70         struct nv30_miptree *mt;
  71         unsigned buf_usage = PIPE_BUFFER_USAGE_PIXEL |
  72                              NOUVEAU_BUFFER_USAGE_TEXTURE;
  73
  74         mt = MALLOC(sizeof(struct nv30_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         nv30_miptree_layout(mt);
 113
 114         mt->buffer = pscreen->buffer_create(pscreen, 256, buf_usage,
 115                                        mt->total_size);
 116         if (!mt->buffer) {
 117                 FREE(mt);
 118                 return NULL;
 119         }
 120
 121         return &mt->base;
 122 }
 123
 124 static struct pipe_texture *
 125 nv30_miptree_blanket(struct pipe_screen *pscreen, const struct pipe_texture *pt,
 126                      const unsigned *stride, struct pipe_buffer *pb)
 127 {
 128         struct nv30_miptree *mt;
 129
 130         /* Only supports 2D, non-mipmapped textures for the moment */
 131         if (pt->target != PIPE_TEXTURE_2D || pt->last_level != 0 ||
 132             pt->depth[0] != 1)
 133                 return NULL;
 134
 135         mt = CALLOC_STRUCT(nv30_miptree);
 136         if (!mt)
 137                 return NULL;
 138
 139         mt->base = *pt;
 140         pipe_reference_init(&mt->base.reference, 1);
 141         mt->base.screen = pscreen;
 142         mt->level[0].pitch = stride[0];
 143         mt->level[0].image_offset = CALLOC(1, sizeof(unsigned));
 144
 145         pipe_buffer_reference(&mt->buffer, pb);
 146         return &mt->base;
 147 }
 148
 149 static void
 150 nv30_miptree_destroy(struct pipe_texture *pt)
 151 {
 152         struct nv30_miptree *mt = (struct nv30_miptree *)pt;
 153         int l;
 154
 155         pipe_buffer_reference(&mt->buffer, NULL);
 156         for (l = 0; l <= pt->last_level; l++) {
 157                 if (mt->level[l].image_offset)
 158                         FREE(mt->level[l].image_offset);
 159         }
 160
 161         FREE(mt);
 162 }
 163
 164 static struct pipe_surface *
 165 nv30_miptree_surface_new(struct pipe_screen *pscreen, struct pipe_texture *pt,
 166                          unsigned face, unsigned level, unsigned zslice,
 167                          unsigned flags)
 168 {
 169         struct nv30_miptree *nv30mt = (struct nv30_miptree *)pt;
 170         struct nv04_surface *ns;
 171
 172         ns = CALLOC_STRUCT(nv04_surface);
 173         if (!ns)
 174                 return NULL;
 175         pipe_texture_reference(&ns->base.texture, pt);
 176         ns->base.format = pt->format;
 177         ns->base.width = pt->width[level];
 178         ns->base.height = pt->height[level];
 179         ns->base.usage = flags;
 180         pipe_reference_init(&ns->base.reference, 1);
 181         ns->base.face = face;
 182         ns->base.level = level;
 183         ns->base.zslice = zslice;
 184         ns->pitch = nv30mt->level[level].pitch;
 185
 186         if (pt->target == PIPE_TEXTURE_CUBE) {
 187                 ns->base.offset = nv30mt->level[level].image_offset[face];
 188         } else
 189         if (pt->target == PIPE_TEXTURE_3D) {
 190                 ns->base.offset = nv30mt->level[level].image_offset[zslice];
 191         } else {
 192                 ns->base.offset = nv30mt->level[level].image_offset[0];
 193         }
 194
 195         return &ns->base;
 196 }
 197
 198 static void
 199 nv30_miptree_surface_del(struct pipe_surface *ps)
 200 {
 201         pipe_texture_reference(&ps->texture, NULL);
 202         FREE(ps);
 203 }
 204
 205 void
 206 nv30_screen_init_miptree_functions(struct pipe_screen *pscreen)
 207 {
 208         pscreen->texture_create = nv30_miptree_create;
 209         pscreen->texture_blanket = nv30_miptree_blanket;
 210         pscreen->texture_destroy = nv30_miptree_destroy;
 211         pscreen->get_tex_surface = nv30_miptree_surface_new;
 212         pscreen->tex_surface_destroy = nv30_miptree_surface_del;
 213 }