src/gallium/drivers/nv20/nv20_miptree.c

   1 #include "pipe/p_state.h"
   2 #include "pipe/p_defines.h"
   3 #include "pipe/p_inlines.h"
   4 #include "util/u_format.h"
   5 #include "util/u_math.h"
   6
   7 #include "nv20_context.h"
   8 #include "nv20_screen.h"
   9
  10 static void
  11 nv20_miptree_layout(struct nv20_miptree *nv20mt)
  12 {
  13         struct pipe_texture *pt = &nv20mt->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                 nr_faces = 1;
  27         }
  28
  29         for (l = 0; l <= pt->last_level; l++) {
  30                 if (wide_pitch && (pt->tex_usage & NOUVEAU_TEXTURE_USAGE_LINEAR))
  31                         nv20mt->level[l].pitch = align(util_format_get_stride(pt->format, pt->width0), 64);
  32                 else
  33                         nv20mt->level[l].pitch = util_format_get_stride(pt->format, width);
  34
  35                 nv20mt->level[l].image_offset =
  36                         CALLOC(nr_faces, sizeof(unsigned));
  37
  38                 width  = u_minify(width, 1);
  39         }
  40
  41         for (f = 0; f < nr_faces; f++) {
  42                 for (l = 0; l < pt->last_level; l++) {
  43                         nv20mt->level[l].image_offset[f] = offset;
  44
  45                         if (!(pt->tex_usage & NOUVEAU_TEXTURE_USAGE_LINEAR) &&
  46                             u_minify(pt->width0, l + 1) > 1 && u_minify(pt->height0, l + 1) > 1)
  47                                 offset += align(nv20mt->level[l].pitch * u_minify(pt->height0, l), 64);
  48                         else
  49                                 offset += nv20mt->level[l].pitch * u_minify(pt->height0, l);
  50                 }
  51
  52                 nv20mt->level[l].image_offset[f] = offset;
  53                 offset += nv20mt->level[l].pitch * u_minify(pt->height0, l);
  54         }
  55
  56         nv20mt->total_size = offset;
  57 }
  58
  59 static struct pipe_texture *
  60 nv20_miptree_blanket(struct pipe_screen *pscreen, const struct pipe_texture *pt,
  61                      const unsigned *stride, struct pipe_buffer *pb)
  62 {
  63         struct nv20_miptree *mt;
  64
  65         /* Only supports 2D, non-mipmapped textures for the moment */
  66         if (pt->target != PIPE_TEXTURE_2D || pt->last_level != 0 ||
  67             pt->depth0 != 1)
  68                 return NULL;
  69
  70         mt = CALLOC_STRUCT(nv20_miptree);
  71         if (!mt)
  72                 return NULL;
  73
  74         mt->base = *pt;
  75         pipe_reference_init(&mt->base.reference, 1);
  76         mt->base.screen = pscreen;
  77         mt->level[0].pitch = stride[0];
  78         mt->level[0].image_offset = CALLOC(1, sizeof(unsigned));
  79
  80         pipe_buffer_reference(&mt->buffer, pb);
  81         mt->bo = nouveau_bo(mt->buffer);
  82         return &mt->base;
  83 }
  84
  85 static struct pipe_texture *
  86 nv20_miptree_create(struct pipe_screen *screen, const struct pipe_texture *pt)
  87 {
  88         struct nv20_miptree *mt;
  89         unsigned buf_usage = PIPE_BUFFER_USAGE_PIXEL |
  90                              NOUVEAU_BUFFER_USAGE_TEXTURE;
  91
  92         mt = MALLOC(sizeof(struct nv20_miptree));
  93         if (!mt)
  94                 return NULL;
  95         mt->base = *pt;
  96         pipe_reference_init(&mt->base.reference, 1);
  97         mt->base.screen = screen;
  98
  99         /* Swizzled textures must be POT */
 100         if (pt->width0 & (pt->width0 - 1) ||
 101             pt->height0 & (pt->height0 - 1))
 102                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
 103         else
 104         if (pt->tex_usage & (PIPE_TEXTURE_USAGE_PRIMARY |
 105                              PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
 106                              PIPE_TEXTURE_USAGE_DEPTH_STENCIL))
 107                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
 108         else
 109         if (pt->tex_usage & PIPE_TEXTURE_USAGE_DYNAMIC)
 110                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
 111         else {
 112                 switch (pt->format) {
 113                 /* TODO: Figure out which formats can be swizzled */
 114                 case PIPE_FORMAT_A8R8G8B8_UNORM:
 115                 case PIPE_FORMAT_X8R8G8B8_UNORM:
 116                 case PIPE_FORMAT_R16_SNORM:
 117                 {
 118                         if (debug_get_bool_option("NOUVEAU_NO_SWIZZLE", FALSE))
 119                                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
 120                         break;
 121                 }
 122                 default:
 123                         mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
 124                 }
 125         }
 126
 127         if (pt->tex_usage & PIPE_TEXTURE_USAGE_DYNAMIC)
 128                 buf_usage |= PIPE_BUFFER_USAGE_CPU_READ_WRITE;
 129
 130         nv20_miptree_layout(mt);
 131
 132         mt->buffer = screen->buffer_create(screen, 256, buf_usage, mt->total_size);
 133         if (!mt->buffer) {
 134                 FREE(mt);
 135                 return NULL;
 136         }
 137         mt->bo = nouveau_bo(mt->buffer);
 138
 139         return &mt->base;
 140 }
 141
 142 static void
 143 nv20_miptree_destroy(struct pipe_texture *pt)
 144 {
 145         struct nv20_miptree *nv20mt = (struct nv20_miptree *)pt;
 146         int l;
 147
 148         pipe_buffer_reference(&nv20mt->buffer, NULL);
 149         for (l = 0; l <= pt->last_level; l++) {
 150                 if (nv20mt->level[l].image_offset)
 151                         FREE(nv20mt->level[l].image_offset);
 152         }
 153 }
 154
 155 static struct pipe_surface *
 156 nv20_miptree_surface_get(struct pipe_screen *screen, struct pipe_texture *pt,
 157                          unsigned face, unsigned level, unsigned zslice,
 158                          unsigned flags)
 159 {
 160         struct nv20_miptree *nv20mt = (struct nv20_miptree *)pt;
 161         struct nv04_surface *ns;
 162
 163         ns = CALLOC_STRUCT(nv04_surface);
 164         if (!ns)
 165                 return NULL;
 166         pipe_texture_reference(&ns->base.texture, pt);
 167         ns->base.format = pt->format;
 168         ns->base.width = u_minify(pt->width0, level);
 169         ns->base.height = u_minify(pt->height0, level);
 170         ns->base.usage = flags;
 171         pipe_reference_init(&ns->base.reference, 1);
 172         ns->base.face = face;
 173         ns->base.level = level;
 174         ns->base.zslice = zslice;
 175         ns->pitch = nv20mt->level[level].pitch;
 176
 177         if (pt->target == PIPE_TEXTURE_CUBE) {
 178                 ns->base.offset = nv20mt->level[level].image_offset[face];
 179         } else
 180         if (pt->target == PIPE_TEXTURE_3D) {
 181                 ns->base.offset = nv20mt->level[level].image_offset[zslice];
 182         } else {
 183                 ns->base.offset = nv20mt->level[level].image_offset[0];
 184         }
 185
 186         return &ns->base;
 187 }
 188
 189 static void
 190 nv20_miptree_surface_destroy(struct pipe_surface *ps)
 191 {
 192         pipe_texture_reference(&ps->texture, NULL);
 193         FREE(ps);
 194 }
 195
 196 void nv20_screen_init_miptree_functions(struct pipe_screen *pscreen)
 197 {
 198         pscreen->texture_create = nv20_miptree_create;
 199         pscreen->texture_blanket = nv20_miptree_blanket;
 200         pscreen->texture_destroy = nv20_miptree_destroy;
 201         pscreen->get_tex_surface = nv20_miptree_surface_get;
 202         pscreen->tex_surface_destroy = nv20_miptree_surface_destroy;
 203 }
 204