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
   5 #include "nv20_context.h"
   6 #include "nv20_screen.h"
   7
   8 static void
   9 nv20_miptree_layout(struct nv20_miptree *nv20mt)
  10 {
  11         struct pipe_texture *pt = &nv20mt->base;
  12         uint width = pt->width[0], height = pt->height[0];
  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                 nr_faces = 1;
  25         }
  26
  27         for (l = 0; l <= pt->last_level; l++) {
  28                 pt->width[l] = width;
  29                 pt->height[l] = height;
  30                 pt->nblocksx[l] = pf_get_nblocksx(&pt->block, width);
  31                 pt->nblocksy[l] = pf_get_nblocksy(&pt->block, height);
  32
  33                 if (wide_pitch && (pt->tex_usage & NOUVEAU_TEXTURE_USAGE_LINEAR))
  34                         nv20mt->level[l].pitch = align(pt->width[0] * pt->block.size, 64);
  35                 else
  36                         nv20mt->level[l].pitch = pt->width[l] * pt->block.size;
  37
  38                 nv20mt->level[l].image_offset =
  39                         CALLOC(nr_faces, sizeof(unsigned));
  40
  41                 width  = MAX2(1, width  >> 1);
  42                 height = MAX2(1, height >> 1);
  43         }
  44
  45         for (f = 0; f < nr_faces; f++) {
  46                 for (l = 0; l < pt->last_level; l++) {
  47                         nv20mt->level[l].image_offset[f] = offset;
  48
  49                         if (!(pt->tex_usage & NOUVEAU_TEXTURE_USAGE_LINEAR) &&
  50                             pt->width[l + 1] > 1 && pt->height[l + 1] > 1)
  51                                 offset += align(nv20mt->level[l].pitch * pt->height[l], 64);
  52                         else
  53                                 offset += nv20mt->level[l].pitch * pt->height[l];
  54                 }
  55
  56                 nv20mt->level[l].image_offset[f] = offset;
  57                 offset += nv20mt->level[l].pitch * pt->height[l];
  58         }
  59
  60         nv20mt->total_size = offset;
  61 }
  62
  63 static struct pipe_texture *
  64 nv20_miptree_blanket(struct pipe_screen *pscreen, const struct pipe_texture *pt,
  65                      const unsigned *stride, struct pipe_buffer *pb)
  66 {
  67         struct nv20_miptree *mt;
  68
  69         /* Only supports 2D, non-mipmapped textures for the moment */
  70         if (pt->target != PIPE_TEXTURE_2D || pt->last_level != 0 ||
  71             pt->depth[0] != 1)
  72                 return NULL;
  73
  74         mt = CALLOC_STRUCT(nv20_miptree);
  75         if (!mt)
  76                 return NULL;
  77
  78         mt->base = *pt;
  79         mt->base.refcount = 1;
  80         mt->base.screen = pscreen;
  81         mt->level[0].pitch = stride[0];
  82         mt->level[0].image_offset = CALLOC(1, sizeof(unsigned));
  83
  84         pipe_buffer_reference(pscreen, &mt->buffer, pb);
  85         return &mt->base;
  86 }
  87
  88 static struct pipe_texture *
  89 nv20_miptree_create(struct pipe_screen *screen, const struct pipe_texture *pt)
  90 {
  91         struct pipe_winsys *ws = screen->winsys;
  92         struct nv20_miptree *mt;
  93         unsigned buf_usage = PIPE_BUFFER_USAGE_PIXEL |
  94                              NOUVEAU_BUFFER_USAGE_TEXTURE;
  95
  96         mt = MALLOC(sizeof(struct nv20_miptree));
  97         if (!mt)
  98                 return NULL;
  99         mt->base = *pt;
 100         mt->base.refcount = 1;
 101         mt->base.screen = screen;
 102
 103         /* Swizzled textures must be POT */
 104         if (pt->width[0] & (pt->width[0] - 1) ||
 105             pt->height[0] & (pt->height[0] - 1))
 106                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
 107         else
 108         if (pt->tex_usage & (PIPE_TEXTURE_USAGE_PRIMARY |
 109                              PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
 110                              PIPE_TEXTURE_USAGE_DEPTH_STENCIL))
 111                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
 112         else
 113         if (pt->tex_usage & PIPE_TEXTURE_USAGE_DYNAMIC)
 114                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
 115         else {
 116                 switch (pt->format) {
 117                 /* TODO: Figure out which formats can be swizzled */
 118                 case PIPE_FORMAT_A8R8G8B8_UNORM:
 119                 case PIPE_FORMAT_X8R8G8B8_UNORM:
 120                 case PIPE_FORMAT_R16_SNORM:
 121                 {
 122                         if (debug_get_bool_option("NOUVEAU_NO_SWIZZLE", FALSE))
 123                                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
 124                         break;
 125                 }
 126                 default:
 127                         mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
 128                 }
 129         }
 130
 131         if (pt->tex_usage & PIPE_TEXTURE_USAGE_DYNAMIC)
 132                 buf_usage |= PIPE_BUFFER_USAGE_CPU_READ_WRITE;
 133
 134         nv20_miptree_layout(mt);
 135
 136         mt->buffer = ws->buffer_create(ws, 256, buf_usage, mt->total_size);
 137         if (!mt->buffer) {
 138                 FREE(mt);
 139                 return NULL;
 140         }
 141
 142         return &mt->base;
 143 }
 144
 145 static void
 146 nv20_miptree_release(struct pipe_screen *screen, struct pipe_texture **pt)
 147 {
 148         struct pipe_texture *mt = *pt;
 149
 150         *pt = NULL;
 151         if (--mt->refcount <= 0) {
 152                 struct nv20_miptree *nv20mt = (struct nv20_miptree *)mt;
 153                 int l;
 154
 155                 pipe_buffer_reference(screen, &nv20mt->buffer, NULL);
 156                 for (l = 0; l <= mt->last_level; l++) {
 157                         if (nv20mt->level[l].image_offset)
 158                                 FREE(nv20mt->level[l].image_offset);
 159                 }
 160                 FREE(nv20mt);
 161         }
 162 }
 163
 164 static struct pipe_surface *
 165 nv20_miptree_surface_get(struct pipe_screen *screen, struct pipe_texture *pt,
 166                          unsigned face, unsigned level, unsigned zslice,
 167                          unsigned flags)
 168 {
 169         struct nv20_miptree *nv20mt = (struct nv20_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         ns->base.status = PIPE_SURFACE_STATUS_DEFINED;
 181         ns->base.refcount = 1;
 182         ns->base.face = face;
 183         ns->base.level = level;
 184         ns->base.zslice = zslice;
 185         ns->pitch = nv20mt->level[level].pitch;
 186
 187         if (pt->target == PIPE_TEXTURE_CUBE) {
 188                 ns->base.offset = nv20mt->level[level].image_offset[face];
 189         } else
 190         if (pt->target == PIPE_TEXTURE_3D) {
 191                 ns->base.offset = nv20mt->level[level].image_offset[zslice];
 192         } else {
 193                 ns->base.offset = nv20mt->level[level].image_offset[0];
 194         }
 195
 196         return &ns->base;
 197 }
 198
 199 static void
 200 nv20_miptree_surface_release(struct pipe_screen *pscreen,
 201                              struct pipe_surface **psurface)
 202 {
 203         struct pipe_surface *ps = *psurface;
 204
 205         *psurface = NULL;
 206         if (--ps->refcount > 0)
 207                 return;
 208
 209         pipe_texture_reference(&ps->texture, NULL);
 210         FREE(ps);
 211 }
 212
 213 void nv20_screen_init_miptree_functions(struct pipe_screen *pscreen)
 214 {
 215         pscreen->texture_create = nv20_miptree_create;
 216         pscreen->texture_blanket = nv20_miptree_blanket;
 217         pscreen->texture_release = nv20_miptree_release;
 218         pscreen->get_tex_surface = nv20_miptree_surface_get;
 219         pscreen->tex_surface_release = nv20_miptree_surface_release;
 220 }
 221