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 #include "util/u_math.h"
   5
   6 #include "nv30_context.h"
   7
   8 static void
   9 nv30_miptree_layout(struct nv30_miptree *nv30mt)
  10 {
  11         struct pipe_texture *pt = &nv30mt->base;
  12         uint width = pt->width0;
  13         uint offset = 0;
  14         int nr_faces, l, f;
  15         uint wide_pitch = pt->tex_usage & (PIPE_TEXTURE_USAGE_SAMPLER |
  16                                            PIPE_TEXTURE_USAGE_DEPTH_STENCIL |
  17                                            PIPE_TEXTURE_USAGE_RENDER_TARGET |
  18                                            PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
  19                                            PIPE_TEXTURE_USAGE_PRIMARY);
  20
  21         if (pt->target == PIPE_TEXTURE_CUBE) {
  22                 nr_faces = 6;
  23         } else
  24         if (pt->target == PIPE_TEXTURE_3D) {
  25                 nr_faces = pt->depth0;
  26         } else {
  27                 nr_faces = 1;
  28         }
  29
  30         for (l = 0; l <= pt->last_level; l++) {
  31                 if (wide_pitch && (pt->tex_usage & NOUVEAU_TEXTURE_USAGE_LINEAR))
  32                         nv30mt->level[l].pitch = align(pf_get_stride(pt->format, pt->width0), 64);
  33                 else
  34                         nv30mt->level[l].pitch = pf_get_stride(pt->format, width);
  35
  36                 nv30mt->level[l].image_offset =
  37                         CALLOC(nr_faces, sizeof(unsigned));
  38
  39                 width  = u_minify(width, 1);
  40         }
  41
  42         for (f = 0; f < nr_faces; f++) {
  43                 for (l = 0; l < pt->last_level; l++) {
  44                         nv30mt->level[l].image_offset[f] = offset;
  45
  46                         if (!(pt->tex_usage & NOUVEAU_TEXTURE_USAGE_LINEAR) &&
  47                             u_minify(pt->width0, l + 1) > 1 && u_minify(pt->height0, l + 1) > 1)
  48                                 offset += align(nv30mt->level[l].pitch * u_minify(pt->height0, l), 64);
  49                         else
  50                                 offset += nv30mt->level[l].pitch * u_minify(pt->height0, l);
  51                 }
  52
  53                 nv30mt->level[l].image_offset[f] = offset;
  54                 offset += nv30mt->level[l].pitch * u_minify(pt->height0, l);
  55         }
  56
  57         nv30mt->total_size = offset;
  58 }
  59
  60 static struct pipe_texture *
  61 nv30_miptree_create(struct pipe_screen *pscreen, const struct pipe_texture *pt)
  62 {
  63         struct nv30_miptree *mt;
  64         unsigned buf_usage = PIPE_BUFFER_USAGE_PIXEL |
  65                              NOUVEAU_BUFFER_USAGE_TEXTURE;
  66
  67         mt = MALLOC(sizeof(struct nv30_miptree));
  68         if (!mt)
  69                 return NULL;
  70         mt->base = *pt;
  71         pipe_reference_init(&mt->base.reference, 1);
  72         mt->base.screen = pscreen;
  73
  74         /* Swizzled textures must be POT */
  75         if (pt->width0 & (pt->width0 - 1) ||
  76             pt->height0 & (pt->height0 - 1))
  77                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
  78         else
  79         if (pt->tex_usage & (PIPE_TEXTURE_USAGE_PRIMARY |
  80                              PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
  81                              PIPE_TEXTURE_USAGE_DEPTH_STENCIL))
  82                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
  83         else
  84         if (pt->tex_usage & PIPE_TEXTURE_USAGE_DYNAMIC)
  85                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
  86         else {
  87                 switch (pt->format) {
  88                 /* TODO: Figure out which formats can be swizzled */
  89                 case PIPE_FORMAT_A8R8G8B8_UNORM:
  90                 case PIPE_FORMAT_X8R8G8B8_UNORM:
  91                 case PIPE_FORMAT_R16_SNORM:
  92                 case PIPE_FORMAT_R5G6B5_UNORM:
  93                 case PIPE_FORMAT_A8L8_UNORM:
  94                 case PIPE_FORMAT_A8_UNORM:
  95                 case PIPE_FORMAT_L8_UNORM:
  96                 case PIPE_FORMAT_I8_UNORM:
  97                 {
  98                         if (debug_get_bool_option("NOUVEAU_NO_SWIZZLE", FALSE))
  99                                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
 100                         break;
 101                 }
 102                 default:
 103                         mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
 104                 }
 105         }
 106
 107         if (pt->tex_usage & PIPE_TEXTURE_USAGE_DYNAMIC)
 108                 buf_usage |= PIPE_BUFFER_USAGE_CPU_READ_WRITE;
 109
 110         nv30_miptree_layout(mt);
 111
 112         mt->buffer = pscreen->buffer_create(pscreen, 256, buf_usage,
 113                                        mt->total_size);
 114         if (!mt->buffer) {
 115                 FREE(mt);
 116                 return NULL;
 117         }
 118
 119         return &mt->base;
 120 }
 121
 122 static struct pipe_texture *
 123 nv30_miptree_blanket(struct pipe_screen *pscreen, const struct pipe_texture *pt,
 124                      const unsigned *stride, struct pipe_buffer *pb)
 125 {
 126         struct nv30_miptree *mt;
 127
 128         /* Only supports 2D, non-mipmapped textures for the moment */
 129         if (pt->target != PIPE_TEXTURE_2D || pt->last_level != 0 ||
 130             pt->depth0 != 1)
 131                 return NULL;
 132
 133         mt = CALLOC_STRUCT(nv30_miptree);
 134         if (!mt)
 135                 return NULL;
 136
 137         mt->base = *pt;
 138         pipe_reference_init(&mt->base.reference, 1);
 139         mt->base.screen = pscreen;
 140         mt->level[0].pitch = stride[0];
 141         mt->level[0].image_offset = CALLOC(1, sizeof(unsigned));
 142
 143         /* Assume whoever created this buffer expects it to be linear for now */
 144         mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
 145
 146         pipe_buffer_reference(&mt->buffer, pb);
 147         return &mt->base;
 148 }
 149
 150 static void
 151 nv30_miptree_destroy(struct pipe_texture *pt)
 152 {
 153         struct nv30_miptree *mt = (struct nv30_miptree *)pt;
 154         int l;
 155
 156         pipe_buffer_reference(&mt->buffer, NULL);
 157         for (l = 0; l <= pt->last_level; l++) {
 158                 if (mt->level[l].image_offset)
 159                         FREE(mt->level[l].image_offset);
 160         }
 161
 162         FREE(mt);
 163 }
 164
 165 static struct pipe_surface *
 166 nv30_miptree_surface_new(struct pipe_screen *pscreen, struct pipe_texture *pt,
 167                          unsigned face, unsigned level, unsigned zslice,
 168                          unsigned flags)
 169 {
 170         struct nv30_miptree *nv30mt = (struct nv30_miptree *)pt;
 171         struct nv04_surface *ns;
 172
 173         ns = CALLOC_STRUCT(nv04_surface);
 174         if (!ns)
 175                 return NULL;
 176         pipe_texture_reference(&ns->base.texture, pt);
 177         ns->base.format = pt->format;
 178         ns->base.width = u_minify(pt->width0, level);
 179         ns->base.height = u_minify(pt->height0, level);
 180         ns->base.usage = flags;
 181         pipe_reference_init(&ns->base.reference, 1);
 182         ns->base.face = face;
 183         ns->base.level = level;
 184         ns->base.zslice = zslice;
 185         ns->pitch = nv30mt->level[level].pitch;
 186
 187         if (pt->target == PIPE_TEXTURE_CUBE) {
 188                 ns->base.offset = nv30mt->level[level].image_offset[face];
 189         } else
 190         if (pt->target == PIPE_TEXTURE_3D) {
 191                 ns->base.offset = nv30mt->level[level].image_offset[zslice];
 192         } else {
 193                 ns->base.offset = nv30mt->level[level].image_offset[0];
 194         }
 195
 196         return &ns->base;
 197 }
 198
 199 static void
 200 nv30_miptree_surface_del(struct pipe_surface *ps)
 201 {
 202         pipe_texture_reference(&ps->texture, NULL);
 203         FREE(ps);
 204 }
 205
 206 void
 207 nv30_screen_init_miptree_functions(struct pipe_screen *pscreen)
 208 {
 209         pscreen->texture_create = nv30_miptree_create;
 210         pscreen->texture_blanket = nv30_miptree_blanket;
 211         pscreen->texture_destroy = nv30_miptree_destroy;
 212         pscreen->get_tex_surface = nv30_miptree_surface_new;
 213         pscreen->tex_surface_destroy = nv30_miptree_surface_del;
 214 }