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_math.h"
   5
   6 #include "nv20_context.h"
   7 #include "nv20_screen.h"
   8
   9 static void
  10 nv20_miptree_layout(struct nv20_miptree *nv20mt)
  11 {
  12         struct pipe_texture *pt = &nv20mt->base;
  13         uint width = pt->width0, height = pt->height0;
  14         uint offset = 0;
  15         int nr_faces, l, f;
  16         uint wide_pitch = pt->tex_usage & (PIPE_TEXTURE_USAGE_SAMPLER |
  17                                            PIPE_TEXTURE_USAGE_DEPTH_STENCIL |
  18                                            PIPE_TEXTURE_USAGE_RENDER_TARGET |
  19                                            PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
  20                                            PIPE_TEXTURE_USAGE_PRIMARY);
  21
  22         if (pt->target == PIPE_TEXTURE_CUBE) {
  23                 nr_faces = 6;
  24         } else {
  25                 nr_faces = 1;
  26         }
  27
  28         for (l = 0; l <= pt->last_level; l++) {
  29                 pt->nblocksx[l] = pf_get_nblocksx(&pt->block, width);
  30                 pt->nblocksy[l] = pf_get_nblocksy(&pt->block, height);
  31
  32                 if (wide_pitch && (pt->tex_usage & NOUVEAU_TEXTURE_USAGE_LINEAR))
  33                         nv20mt->level[l].pitch = align(pt->width0 * pt->block.size, 64);
  34                 else
  35                         nv20mt->level[l].pitch = u_minify(pt->width0, l) * pt->block.size;
  36
  37                 nv20mt->level[l].image_offset =
  38                         CALLOC(nr_faces, sizeof(unsigned));
  39
  40                 width  = u_minify(width, 1);
  41                 height = u_minify(height, 1);
  42         }
  43
  44         for (f = 0; f < nr_faces; f++) {
  45                 for (l = 0; l < pt->last_level; l++) {
  46                         nv20mt->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(nv20mt->level[l].pitch * u_minify(pt->height0, l), 64);
  51                         else
  52                                 offset += nv20mt->level[l].pitch * u_minify(pt->height0, l);
  53                 }
  54
  55                 nv20mt->level[l].image_offset[f] = offset;
  56                 offset += nv20mt->level[l].pitch * u_minify(pt->height0, l);
  57         }
  58
  59         nv20mt->total_size = offset;
  60 }
  61
  62 static struct pipe_texture *
  63 nv20_miptree_blanket(struct pipe_screen *pscreen, const struct pipe_texture *pt,
  64                      const unsigned *stride, struct pipe_buffer *pb)
  65 {
  66         struct nv20_miptree *mt;
  67
  68         /* Only supports 2D, non-mipmapped textures for the moment */
  69         if (pt->target != PIPE_TEXTURE_2D || pt->last_level != 0 ||
  70             pt->depth0 != 1)
  71                 return NULL;
  72
  73         mt = CALLOC_STRUCT(nv20_miptree);
  74         if (!mt)
  75                 return NULL;
  76
  77         mt->base = *pt;
  78         pipe_reference_init(&mt->base.reference, 1);
  79         mt->base.screen = pscreen;
  80         mt->level[0].pitch = stride[0];
  81         mt->level[0].image_offset = CALLOC(1, sizeof(unsigned));
  82
  83         pipe_buffer_reference(&mt->buffer, pb);
  84         return &mt->base;
  85 }
  86
  87 static struct pipe_texture *
  88 nv20_miptree_create(struct pipe_screen *screen, const struct pipe_texture *pt)
  89 {
  90         struct nv20_miptree *mt;
  91         unsigned buf_usage = PIPE_BUFFER_USAGE_PIXEL |
  92                              NOUVEAU_BUFFER_USAGE_TEXTURE;
  93
  94         mt = MALLOC(sizeof(struct nv20_miptree));
  95         if (!mt)
  96                 return NULL;
  97         mt->base = *pt;
  98         pipe_reference_init(&mt->base.reference, 1);
  99         mt->base.screen = screen;
 100
 101         /* Swizzled textures must be POT */
 102         if (pt->width0 & (pt->width0 - 1) ||
 103             pt->height0 & (pt->height0 - 1))
 104                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
 105         else
 106         if (pt->tex_usage & (PIPE_TEXTURE_USAGE_PRIMARY |
 107                              PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
 108                              PIPE_TEXTURE_USAGE_DEPTH_STENCIL))
 109                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
 110         else
 111         if (pt->tex_usage & PIPE_TEXTURE_USAGE_DYNAMIC)
 112                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
 113         else {
 114                 switch (pt->format) {
 115                 /* TODO: Figure out which formats can be swizzled */
 116                 case PIPE_FORMAT_A8R8G8B8_UNORM:
 117                 case PIPE_FORMAT_X8R8G8B8_UNORM:
 118                 case PIPE_FORMAT_R16_SNORM:
 119                 {
 120                         if (debug_get_bool_option("NOUVEAU_NO_SWIZZLE", FALSE))
 121                                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
 122                         break;
 123                 }
 124                 default:
 125                         mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
 126                 }
 127         }
 128
 129         if (pt->tex_usage & PIPE_TEXTURE_USAGE_DYNAMIC)
 130                 buf_usage |= PIPE_BUFFER_USAGE_CPU_READ_WRITE;
 131
 132         nv20_miptree_layout(mt);
 133
 134         mt->buffer = screen->buffer_create(screen, 256, buf_usage, mt->total_size);
 135         if (!mt->buffer) {
 136                 FREE(mt);
 137                 return NULL;
 138         }
 139
 140         return &mt->base;
 141 }
 142
 143 static void
 144 nv20_miptree_destroy(struct pipe_texture *pt)
 145 {
 146         struct nv20_miptree *nv20mt = (struct nv20_miptree *)pt;
 147         int l;
 148
 149         pipe_buffer_reference(&nv20mt->buffer, NULL);
 150         for (l = 0; l <= pt->last_level; l++) {
 151                 if (nv20mt->level[l].image_offset)
 152                         FREE(nv20mt->level[l].image_offset);
 153         }
 154 }
 155
 156 static struct pipe_surface *
 157 nv20_miptree_surface_get(struct pipe_screen *screen, struct pipe_texture *pt,
 158                          unsigned face, unsigned level, unsigned zslice,
 159                          unsigned flags)
 160 {
 161         struct nv20_miptree *nv20mt = (struct nv20_miptree *)pt;
 162         struct nv04_surface *ns;
 163
 164         ns = CALLOC_STRUCT(nv04_surface);
 165         if (!ns)
 166                 return NULL;
 167         pipe_texture_reference(&ns->base.texture, pt);
 168         ns->base.format = pt->format;
 169         ns->base.width = u_minify(pt->width0, level);
 170         ns->base.height = u_minify(pt->height0, level);
 171         ns->base.usage = flags;
 172         pipe_reference_init(&ns->base.reference, 1);
 173         ns->base.face = face;
 174         ns->base.level = level;
 175         ns->base.zslice = zslice;
 176         ns->pitch = nv20mt->level[level].pitch;
 177
 178         if (pt->target == PIPE_TEXTURE_CUBE) {
 179                 ns->base.offset = nv20mt->level[level].image_offset[face];
 180         } else
 181         if (pt->target == PIPE_TEXTURE_3D) {
 182                 ns->base.offset = nv20mt->level[level].image_offset[zslice];
 183         } else {
 184                 ns->base.offset = nv20mt->level[level].image_offset[0];
 185         }
 186
 187         return &ns->base;
 188 }
 189
 190 static void
 191 nv20_miptree_surface_destroy(struct pipe_surface *ps)
 192 {
 193         pipe_texture_reference(&ps->texture, NULL);
 194         FREE(ps);
 195 }
 196
 197 void nv20_screen_init_miptree_functions(struct pipe_screen *pscreen)
 198 {
 199         pscreen->texture_create = nv20_miptree_create;
 200         pscreen->texture_blanket = nv20_miptree_blanket;
 201         pscreen->texture_destroy = nv20_miptree_destroy;
 202         pscreen->get_tex_surface = nv20_miptree_surface_get;
 203         pscreen->tex_surface_destroy = nv20_miptree_surface_destroy;
 204 }
 205