src/gallium/drivers/nv40/nv40_transfer.c

   1 #include "pipe/p_state.h"
   2 #include "pipe/p_defines.h"
   3 #include "util/u_inlines.h"
   4 #include "util/u_format.h"
   5 #include "util/u_memory.h"
   6 #include "util/u_math.h"
   7 #include "nouveau/nouveau_winsys.h"
   8 #include "nv40_context.h"
   9 #include "nv40_screen.h"
  10 #include "nv40_state.h"
  11
  12 struct nv40_transfer {
  13         struct pipe_transfer base;
  14         struct pipe_surface *surface;
  15         boolean direct;
  16 };
  17
  18 static void
  19 nv40_compatible_transfer_tex(struct pipe_texture *pt, unsigned width, unsigned height,
  20                              struct pipe_texture *template)
  21 {
  22         memset(template, 0, sizeof(struct pipe_texture));
  23         template->target = pt->target;
  24         template->format = pt->format;
  25         template->width0 = width;
  26         template->height0 = height;
  27         template->depth0 = 1;
  28         template->last_level = 0;
  29         template->nr_samples = pt->nr_samples;
  30
  31         template->tex_usage = PIPE_TEXTURE_USAGE_DYNAMIC |
  32                               NOUVEAU_TEXTURE_USAGE_LINEAR;
  33 }
  34
  35 static struct pipe_transfer *
  36 nv40_transfer_new(struct pipe_context *pcontext, struct pipe_texture *pt,
  37                   unsigned face, unsigned level, unsigned zslice,
  38                   enum pipe_transfer_usage usage,
  39                   unsigned x, unsigned y, unsigned w, unsigned h)
  40 {
  41         struct pipe_screen *pscreen = pcontext->screen;
  42         struct nv40_miptree *mt = (struct nv40_miptree *)pt;
  43         struct nv40_transfer *tx;
  44         struct pipe_texture tx_tex_template, *tx_tex;
  45
  46         tx = CALLOC_STRUCT(nv40_transfer);
  47         if (!tx)
  48                 return NULL;
  49
  50         pipe_texture_reference(&tx->base.texture, pt);
  51         tx->base.x = x;
  52         tx->base.y = y;
  53         tx->base.width = w;
  54         tx->base.height = h;
  55         tx->base.stride = mt->level[level].pitch;
  56         tx->base.usage = usage;
  57         tx->base.face = face;
  58         tx->base.level = level;
  59         tx->base.zslice = zslice;
  60
  61         /* Direct access to texture */
  62         if ((pt->tex_usage & PIPE_TEXTURE_USAGE_DYNAMIC ||
  63              debug_get_bool_option("NOUVEAU_NO_TRANSFER", TRUE/*XXX:FALSE*/)) &&
  64             pt->tex_usage & NOUVEAU_TEXTURE_USAGE_LINEAR)
  65         {
  66                 tx->direct = true;
  67                 tx->surface = pscreen->get_tex_surface(pscreen, pt,
  68                                                        face, level, zslice,
  69                                                        pipe_transfer_buffer_flags(&tx->base));
  70                 return &tx->base;
  71         }
  72
  73         tx->direct = false;
  74
  75         nv40_compatible_transfer_tex(pt, w, h, &tx_tex_template);
  76
  77         tx_tex = pscreen->texture_create(pscreen, &tx_tex_template);
  78         if (!tx_tex)
  79         {
  80                 FREE(tx);
  81                 return NULL;
  82         }
  83
  84         tx->base.stride = ((struct nv40_miptree*)tx_tex)->level[0].pitch;
  85
  86         tx->surface = pscreen->get_tex_surface(pscreen, tx_tex,
  87                                                0, 0, 0,
  88                                                pipe_transfer_buffer_flags(&tx->base));
  89
  90         pipe_texture_reference(&tx_tex, NULL);
  91
  92         if (!tx->surface)
  93         {
  94                 pipe_surface_reference(&tx->surface, NULL);
  95                 FREE(tx);
  96                 return NULL;
  97         }
  98
  99         if (usage & PIPE_TRANSFER_READ) {
 100                 struct nv40_screen *nvscreen = nv40_screen(pscreen);
 101                 struct pipe_surface *src;
 102
 103                 src = pscreen->get_tex_surface(pscreen, pt,
 104                                                face, level, zslice,
 105                                                PIPE_BUFFER_USAGE_GPU_READ);
 106
 107                 /* TODO: Check if SIFM can deal with x,y,w,h when swizzling */
 108                 /* TODO: Check if SIFM can un-swizzle */
 109                 nvscreen->eng2d->copy(nvscreen->eng2d,
 110                                       tx->surface, 0, 0,
 111                                       src, x, y,
 112                                       w, h);
 113
 114                 pipe_surface_reference(&src, NULL);
 115         }
 116
 117         return &tx->base;
 118 }
 119
 120 static void
 121 nv40_transfer_del(struct pipe_context *pcontext, struct pipe_transfer *ptx)
 122 {
 123         struct nv40_transfer *tx = (struct nv40_transfer *)ptx;
 124
 125         if (!tx->direct && (ptx->usage & PIPE_TRANSFER_WRITE)) {
 126                 struct pipe_screen *pscreen = pcontext->screen;
 127                 struct nv40_screen *nvscreen = nv40_screen(pscreen);
 128                 struct pipe_surface *dst;
 129
 130                 dst = pscreen->get_tex_surface(pscreen, ptx->texture,
 131                                                ptx->face, ptx->level, ptx->zslice,
 132                                                PIPE_BUFFER_USAGE_GPU_WRITE | NOUVEAU_BUFFER_USAGE_NO_RENDER);
 133
 134                 /* TODO: Check if SIFM can deal with x,y,w,h when swizzling */
 135                 nvscreen->eng2d->copy(nvscreen->eng2d,
 136                                       dst, tx->base.x, tx->base.y,
 137                                       tx->surface, 0, 0,
 138                                       tx->base.width, tx->base.height);
 139
 140                 pipe_surface_reference(&dst, NULL);
 141         }
 142
 143         pipe_surface_reference(&tx->surface, NULL);
 144         pipe_texture_reference(&ptx->texture, NULL);
 145         FREE(ptx);
 146 }
 147
 148 static void *
 149 nv40_transfer_map(struct pipe_context *pcontext, struct pipe_transfer *ptx)
 150 {
 151         struct pipe_screen *pscreen = pcontext->screen;
 152         struct nv40_transfer *tx = (struct nv40_transfer *)ptx;
 153         struct nv04_surface *ns = (struct nv04_surface *)tx->surface;
 154         struct nv40_miptree *mt = (struct nv40_miptree *)tx->surface->texture;
 155         void *map = pipe_buffer_map(pscreen, mt->buffer,
 156                                     pipe_transfer_buffer_flags(ptx));
 157
 158         if(!tx->direct)
 159                 return map + ns->base.offset;
 160         else
 161                 return map + ns->base.offset + ptx->y * ns->pitch + ptx->x * util_format_get_blocksize(ptx->texture->format);
 162 }
 163
 164 static void
 165 nv40_transfer_unmap(struct pipe_context *pcontext, struct pipe_transfer *ptx)
 166 {
 167         struct pipe_screen *pscreen = pcontext->screen;
 168         struct nv40_transfer *tx = (struct nv40_transfer *)ptx;
 169         struct nv40_miptree *mt = (struct nv40_miptree *)tx->surface->texture;
 170
 171         pipe_buffer_unmap(pscreen, mt->buffer);
 172 }
 173
 174 void
 175 nv40_init_transfer_functions(struct nv40_context *nv40)
 176 {
 177         nv40->pipe.get_tex_transfer = nv40_transfer_new;
 178         nv40->pipe.tex_transfer_destroy = nv40_transfer_del;
 179         nv40->pipe.transfer_map = nv40_transfer_map;
 180         nv40->pipe.transfer_unmap = nv40_transfer_unmap;
 181 }