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 #include "util/u_math.h"
   5
   6 #include "nv40_context.h"
   7
   8
   9
  10 static void
  11 nv40_miptree_layout(struct nv40_miptree *mt)
  12 {
  13         struct pipe_texture *pt = &mt->base;
  14         uint width = pt->width0;
  15         uint offset = 0;
  16         int nr_faces, l, f;
  17         uint wide_pitch = pt->tex_usage & (PIPE_TEXTURE_USAGE_SAMPLER |
  18                                            PIPE_TEXTURE_USAGE_DEPTH_STENCIL |
  19                                            PIPE_TEXTURE_USAGE_RENDER_TARGET |
  20                                            PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
  21                                            PIPE_TEXTURE_USAGE_PRIMARY);
  22
  23         if (pt->target == PIPE_TEXTURE_CUBE) {
  24                 nr_faces = 6;
  25         } else
  26         if (pt->target == PIPE_TEXTURE_3D) {
  27                 nr_faces = pt->depth0;
  28         } else {
  29                 nr_faces = 1;
  30         }
  31
  32         for (l = 0; l <= pt->last_level; l++) {
  33                 if (wide_pitch && (pt->tex_usage & NOUVEAU_TEXTURE_USAGE_LINEAR))
  34                         mt->level[l].pitch = align(pf_get_stride(pt->format, pt->width0), 64);
  35                 else
  36                         mt->level[l].pitch = pf_get_stride(pt->format, width);
  37
  38                 mt->level[l].image_offset =
  39                         CALLOC(nr_faces, sizeof(unsigned));
  40
  41                 width  = u_minify(width, 1);
  42         }
  43
  44         for (f = 0; f < nr_faces; f++) {
  45                 for (l = 0; l < pt->last_level; l++) {
  46                         mt->level[l].image_offset[f] = offset;
  47
  48                         if (!(pt->tex_usage & NOUVEAU_TEXTURE_USAGE_LINEAR) &&
  49                             u_minify(pt->width0, l + 1) > 1 && u_minify(pt->height0, l + 1) > 1)
  50                                 offset += align(mt->level[l].pitch * u_minify(pt->height0, l), 64);
  51                         else
  52                                 offset += mt->level[l].pitch * u_minify(pt->height0, l);
  53                 }
  54
  55                 mt->level[l].image_offset[f] = offset;
  56                 offset += mt->level[l].pitch * u_minify(pt->height0, l);
  57         }
  58
  59         mt->total_size = offset;
  60 }
  61
  62 static struct pipe_texture *
  63 nv40_miptree_create(struct pipe_screen *pscreen, const struct pipe_texture *pt)
  64 {
  65         struct nv40_miptree *mt;
  66         unsigned buf_usage = PIPE_BUFFER_USAGE_PIXEL |
  67                              NOUVEAU_BUFFER_USAGE_TEXTURE;
  68
  69         mt = MALLOC(sizeof(struct nv40_miptree));
  70         if (!mt)
  71                 return NULL;
  72         mt->base = *pt;
  73         pipe_reference_init(&mt->base.reference, 1);
  74         mt->base.screen = pscreen;
  75
  76         /* Swizzled textures must be POT */
  77         if (pt->width0 & (pt->width0 - 1) ||
  78             pt->height0 & (pt->height0 - 1))
  79                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
  80         else
  81         if (pt->tex_usage & (PIPE_TEXTURE_USAGE_PRIMARY |
  82                              PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
  83                              PIPE_TEXTURE_USAGE_DEPTH_STENCIL))
  84                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
  85         else
  86         if (pt->tex_usage & PIPE_TEXTURE_USAGE_DYNAMIC)
  87                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
  88         else {
  89                 switch (pt->format) {
  90                 /* TODO: Figure out which formats can be swizzled */
  91                 case PIPE_FORMAT_A8R8G8B8_UNORM:
  92                 case PIPE_FORMAT_X8R8G8B8_UNORM:
  93                 case PIPE_FORMAT_R16_SNORM:
  94                 {
  95                         if (debug_get_bool_option("NOUVEAU_NO_SWIZZLE", FALSE))
  96                                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
  97                         break;
  98                 }
  99                 default:
 100                         mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
 101                 }
 102         }
 103
 104         if (pt->tex_usage & PIPE_TEXTURE_USAGE_DYNAMIC)
 105                 buf_usage |= PIPE_BUFFER_USAGE_CPU_READ_WRITE;
 106
 107         nv40_miptree_layout(mt);
 108
 109         mt->buffer = pscreen->buffer_create(pscreen, 256, buf_usage, mt->total_size);
 110         if (!mt->buffer) {
 111                 FREE(mt);
 112                 return NULL;
 113         }
 114         mt->bo = nouveau_bo(mt->buffer);
 115         return &mt->base;
 116 }
 117
 118 static struct pipe_texture *
 119 nv40_miptree_blanket(struct pipe_screen *pscreen, const struct pipe_texture *pt,
 120                      const unsigned *stride, struct pipe_buffer *pb)
 121 {
 122         struct nv40_miptree *mt;
 123
 124         /* Only supports 2D, non-mipmapped textures for the moment */
 125         if (pt->target != PIPE_TEXTURE_2D || pt->last_level != 0 ||
 126             pt->depth0 != 1)
 127                 return NULL;
 128
 129         mt = CALLOC_STRUCT(nv40_miptree);
 130         if (!mt)
 131                 return NULL;
 132
 133         mt->base = *pt;
 134         pipe_reference_init(&mt->base.reference, 1);
 135         mt->base.screen = pscreen;
 136         mt->level[0].pitch = stride[0];
 137         mt->level[0].image_offset = CALLOC(1, sizeof(unsigned));
 138
 139         /* Assume whoever created this buffer expects it to be linear for now */
 140         mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
 141
 142         pipe_buffer_reference(&mt->buffer, pb);
 143         mt->bo = nouveau_bo(mt->buffer);
 144         return &mt->base;
 145 }
 146
 147 static void
 148 nv40_miptree_destroy(struct pipe_texture *pt)
 149 {
 150         struct nv40_miptree *mt = (struct nv40_miptree *)pt;
 151         int l;
 152
 153         pipe_buffer_reference(&mt->buffer, NULL);
 154         for (l = 0; l <= pt->last_level; l++) {
 155                 if (mt->level[l].image_offset)
 156                         FREE(mt->level[l].image_offset);
 157         }
 158
 159         FREE(mt);
 160 }
 161
 162 static struct pipe_surface *
 163 nv40_miptree_surface_new(struct pipe_screen *pscreen, struct pipe_texture *pt,
 164                          unsigned face, unsigned level, unsigned zslice,
 165                          unsigned flags)
 166 {
 167         struct nv40_miptree *mt = (struct nv40_miptree *)pt;
 168         struct nv04_surface *ns;
 169
 170         ns = CALLOC_STRUCT(nv04_surface);
 171         if (!ns)
 172                 return NULL;
 173         pipe_texture_reference(&ns->base.texture, pt);
 174         ns->base.format = pt->format;
 175         ns->base.width = u_minify(pt->width0, level);
 176         ns->base.height = u_minify(pt->height0, level);
 177         ns->base.usage = flags;
 178         pipe_reference_init(&ns->base.reference, 1);
 179         ns->base.face = face;
 180         ns->base.level = level;
 181         ns->base.zslice = zslice;
 182         ns->pitch = mt->level[level].pitch;
 183
 184         if (pt->target == PIPE_TEXTURE_CUBE) {
 185                 ns->base.offset = mt->level[level].image_offset[face];
 186         } else
 187         if (pt->target == PIPE_TEXTURE_3D) {
 188                 ns->base.offset = mt->level[level].image_offset[zslice];
 189         } else {
 190                 ns->base.offset = mt->level[level].image_offset[0];
 191         }
 192
 193         return &ns->base;
 194 }
 195
 196 static void
 197 nv40_miptree_surface_del(struct pipe_surface *ps)
 198 {
 199         pipe_texture_reference(&ps->texture, NULL);
 200         FREE(ps);
 201 }
 202
 203 void
 204 nv40_screen_init_miptree_functions(struct pipe_screen *pscreen)
 205 {
 206         pscreen->texture_create = nv40_miptree_create;
 207         pscreen->texture_blanket = nv40_miptree_blanket;
 208         pscreen->texture_destroy = nv40_miptree_destroy;
 209         pscreen->get_tex_surface = nv40_miptree_surface_new;
 210         pscreen->tex_surface_destroy = nv40_miptree_surface_del;
 211 }
 212