src/gallium/drivers/nv50/nv50_miptree.c

   1 /*
   2  * Copyright 2008 Ben Skeggs
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  18  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
  19  * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  20  * SOFTWARE.
  21  */
  22
  23 #include "pipe/p_state.h"
  24 #include "pipe/p_defines.h"
  25 #include "pipe/p_inlines.h"
  26
  27 #include "nv50_context.h"
  28
  29 static struct pipe_texture *
  30 nv50_miptree_create(struct pipe_screen *pscreen, const struct pipe_texture *pt)
  31 {
  32         struct pipe_winsys *ws = pscreen->winsys;
  33         struct nv50_miptree *mt = CALLOC_STRUCT(nv50_miptree);
  34         unsigned usage, width = pt->width[0], height = pt->height[0];
  35         int i;
  36
  37         mt->base = *pt;
  38         mt->base.refcount = 1;
  39         mt->base.screen = pscreen;
  40
  41         usage = PIPE_BUFFER_USAGE_PIXEL;
  42         switch (pt->format) {
  43         case PIPE_FORMAT_Z24S8_UNORM:
  44         case PIPE_FORMAT_Z16_UNORM:
  45                 usage |= NOUVEAU_BUFFER_USAGE_ZETA;
  46                 break;
  47         default:
  48                 break;
  49         }
  50
  51         switch (pt->target) {
  52         case PIPE_TEXTURE_3D:
  53                 mt->image_nr = pt->depth[0];
  54                 break;
  55         case PIPE_TEXTURE_CUBE:
  56                 mt->image_nr = 6;
  57                 break;
  58         default:
  59                 mt->image_nr = 1;
  60                 break;
  61         }
  62         mt->image_offset = CALLOC(mt->image_nr, sizeof(int));
  63
  64         for (i = 0; i < mt->image_nr; i++) {
  65                 int image_size;
  66
  67                 image_size  = align(width, 8) * pt->block.size;
  68                 image_size  = align(image_size, 64);
  69                 image_size *= align(height, 8) * pt->block.size;
  70
  71                 mt->image_offset[i] = mt->total_size;
  72                 mt->total_size += image_size;
  73         }
  74
  75         mt->buffer = ws->buffer_create(ws, 256, usage, mt->total_size);
  76         if (!mt->buffer) {
  77                 FREE(mt);
  78                 return NULL;
  79         }
  80
  81         return &mt->base;
  82 }
  83
  84 static void
  85 nv50_miptree_release(struct pipe_screen *pscreen, struct pipe_texture **ppt)
  86 {
  87         struct pipe_texture *pt = *ppt;
  88
  89         *ppt = NULL;
  90
  91         if (--pt->refcount <= 0) {
  92                 struct nv50_miptree *mt = nv50_miptree(pt);
  93
  94                 pipe_buffer_reference(pscreen, &mt->buffer, NULL);
  95                 FREE(mt);
  96         }
  97 }
  98
  99 static struct pipe_surface *
 100 nv50_miptree_surface_new(struct pipe_screen *pscreen, struct pipe_texture *pt,
 101                          unsigned face, unsigned level, unsigned zslice,
 102                          unsigned flags)
 103 {
 104         struct nv50_miptree *mt = nv50_miptree(pt);
 105         struct nv50_surface *s;
 106         struct pipe_surface *ps;
 107         int img;
 108
 109         if (pt->target == PIPE_TEXTURE_CUBE)
 110                 img = face;
 111         else
 112         if (pt->target == PIPE_TEXTURE_3D)
 113                 img = zslice;
 114         else
 115                 img = 0;
 116
 117         s = CALLOC_STRUCT(nv50_surface);
 118         if (!s)
 119                 return NULL;
 120         ps = &s->base;
 121
 122         ps->refcount = 1;
 123         ps->winsys = pscreen->winsys;
 124         ps->format = pt->format;
 125         ps->width = pt->width[level];
 126         ps->height = pt->height[level];
 127         ps->block = pt->block;
 128         ps->nblocksx = pt->nblocksx[level];
 129         ps->nblocksy = pt->nblocksy[level];
 130         ps->stride = ps->width * ps->block.size;
 131         ps->offset = mt->image_offset[img];
 132         ps->usage = flags;
 133         ps->status = PIPE_SURFACE_STATUS_DEFINED;
 134
 135         pipe_texture_reference(&ps->texture, pt);
 136         pipe_buffer_reference(pscreen, &ps->buffer, mt->buffer);
 137
 138         return ps;
 139 }
 140
 141 static void
 142 nv50_miptree_surface_del(struct pipe_screen *pscreen,
 143                          struct pipe_surface **psurface)
 144 {
 145         struct pipe_surface *ps = *psurface;
 146         struct nv50_surface *s = nv50_surface(ps);
 147
 148         *psurface = NULL;
 149
 150         if (--ps->refcount <= 0) {
 151                 pipe_texture_reference(&ps->texture, NULL);
 152                 pipe_buffer_reference(pscreen, &ps->buffer, NULL);
 153                 FREE(s);
 154         }
 155 }
 156
 157 void
 158 nv50_screen_init_miptree_functions(struct pipe_screen *pscreen)
 159 {
 160         pscreen->texture_create = nv50_miptree_create;
 161         pscreen->texture_release = nv50_miptree_release;
 162         pscreen->get_tex_surface = nv50_miptree_surface_new;
 163         pscreen->tex_surface_release = nv50_miptree_surface_del;
 164 }
 165