src/gallium/state_trackers/python/p_texture.i

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  27
  28 /**
  29  * @file
  30  * SWIG interface definion for Gallium types.
  31  *
  32  * @author Jose Fonseca <jrfonseca@tungstengraphics.com>
  33  */
  34
  35
  36 %nodefaultctor pipe_texture;
  37 %nodefaultctor pipe_surface;
  38 %nodefaultctor st_buffer;
  39
  40 %nodefaultdtor pipe_texture;
  41 %nodefaultdtor pipe_surface;
  42 %nodefaultdtor st_buffer;
  43
  44 %ignore pipe_texture::screen;
  45
  46 %ignore pipe_surface::winsys;
  47 %immutable pipe_surface::texture;
  48 %immutable pipe_surface::buffer;
  49
  50 %newobject pipe_texture::get_surface;
  51
  52
  53 %extend pipe_texture {
  54
  55    ~pipe_texture() {
  56       struct pipe_texture *ptr = $self;
  57       pipe_texture_reference(&ptr, NULL);
  58    }
  59
  60    unsigned get_width(unsigned level=0) {
  61       return $self->width[level];
  62    }
  63
  64    unsigned get_height(unsigned level=0) {
  65       return $self->height[level];
  66    }
  67
  68    unsigned get_depth(unsigned level=0) {
  69       return $self->depth[level];
  70    }
  71
  72    unsigned get_nblocksx(unsigned level=0) {
  73       return $self->nblocksx[level];
  74    }
  75
  76    unsigned get_nblocksy(unsigned level=0) {
  77       return $self->nblocksy[level];
  78    }
  79
  80    /** Get a surface which is a "view" into a texture */
  81    struct pipe_surface *
  82    get_surface(unsigned face=0, unsigned level=0, unsigned zslice=0, unsigned usage=0 )
  83    {
  84       struct pipe_screen *screen = $self->screen;
  85       return screen->get_tex_surface(screen, $self, face, level, zslice, usage);
  86    }
  87
  88 };
  89
  90
  91 %extend pipe_surface {
  92
  93    ~pipe_surface() {
  94       struct pipe_surface *ptr = $self;
  95       pipe_surface_reference(&ptr, NULL);
  96    }
  97
  98    void
  99    get_tile_raw(unsigned x, unsigned y, unsigned w, unsigned h, char *raw, unsigned stride)
 100    {
 101       struct pipe_screen *screen = $self->texture->screen;
 102       struct pipe_transfer *transfer;
 103       transfer = screen->get_tex_transfer(screen,
 104                                           $self->texture,
 105                                           $self->face,
 106                                           $self->level,
 107                                           $self->zslice,
 108                                           PIPE_TRANSFER_READ,
 109                                           0, 0,
 110                                           $self->width,
 111                                           $self->height);
 112       if(transfer) {
 113          pipe_get_tile_raw(transfer, x, y, w, h, raw, stride);
 114          screen->tex_transfer_destroy(transfer);
 115       }
 116    }
 117
 118    void
 119    put_tile_raw(unsigned x, unsigned y, unsigned w, unsigned h, const char *raw, unsigned stride)
 120    {
 121       struct pipe_screen *screen = $self->texture->screen;
 122       struct pipe_transfer *transfer;
 123       transfer = screen->get_tex_transfer(screen,
 124                                           $self->texture,
 125                                           $self->face,
 126                                           $self->level,
 127                                           $self->zslice,
 128                                           PIPE_TRANSFER_WRITE,
 129                                           0, 0,
 130                                           $self->width,
 131                                           $self->height);
 132       if(transfer) {
 133          pipe_put_tile_raw(transfer, x, y, w, h, raw, stride);
 134          screen->tex_transfer_destroy(transfer);
 135       }
 136    }
 137
 138    void
 139    get_tile_rgba(unsigned x, unsigned y, unsigned w, unsigned h, float *rgba)
 140    {
 141       struct pipe_screen *screen = $self->texture->screen;
 142       struct pipe_transfer *transfer;
 143       transfer = screen->get_tex_transfer(screen,
 144                                           $self->texture,
 145                                           $self->face,
 146                                           $self->level,
 147                                           $self->zslice,
 148                                           PIPE_TRANSFER_READ,
 149                                           0, 0,
 150                                           $self->width,
 151                                           $self->height);
 152       if(transfer) {
 153          pipe_get_tile_rgba(transfer, x, y, w, h, rgba);
 154          screen->tex_transfer_destroy(transfer);
 155       }
 156    }
 157
 158    void
 159    put_tile_rgba(unsigned x, unsigned y, unsigned w, unsigned h, const float *rgba)
 160    {
 161       struct pipe_screen *screen = $self->texture->screen;
 162       struct pipe_transfer *transfer;
 163       transfer = screen->get_tex_transfer(screen,
 164                                           $self->texture,
 165                                           $self->face,
 166                                           $self->level,
 167                                           $self->zslice,
 168                                           PIPE_TRANSFER_WRITE,
 169                                           0, 0,
 170                                           $self->width,
 171                                           $self->height);
 172       if(transfer) {
 173          pipe_put_tile_rgba(transfer, x, y, w, h, rgba);
 174          screen->tex_transfer_destroy(transfer);
 175       }
 176    }
 177
 178    %cstring_output_allocate_size(char **STRING, int *LENGTH, free(*$1));
 179    void
 180    get_tile_rgba8(unsigned x, unsigned y, unsigned w, unsigned h, char **STRING, int *LENGTH)
 181    {
 182       struct pipe_screen *screen = $self->texture->screen;
 183       struct pipe_transfer *transfer;
 184       float *rgba;
 185       unsigned char *rgba8;
 186       unsigned i, j, k;
 187
 188       *LENGTH = 0;
 189       *STRING = NULL;
 190
 191       if (!$self)
 192          return;
 193
 194       *LENGTH = h*w*4;
 195       *STRING = (char *) malloc(*LENGTH);
 196       if(!*STRING)
 197          return;
 198
 199       rgba = malloc(w*4*sizeof(float));
 200       if(!rgba)
 201          return;
 202
 203       rgba8 = (unsigned char *) *STRING;
 204
 205       for(j = 0; j < h; ++j) {
 206          transfer = screen->get_tex_transfer(screen,
 207                                              $self->texture,
 208                                              $self->face,
 209                                              $self->level,
 210                                              $self->zslice,
 211                                              PIPE_TRANSFER_READ,
 212                                              0, 0,
 213                                              $self->width,
 214                                              $self->height);
 215          if(transfer) {
 216             pipe_get_tile_rgba(transfer,
 217                                x, y + j, w, 1,
 218                                rgba);
 219             for(i = 0; i < w; ++i)
 220                for(k = 0; k <4; ++k)
 221                   rgba8[j*w*4 + i*4 + k] = float_to_ubyte(rgba[i*4 + k]);
 222             screen->tex_transfer_destroy(transfer);
 223          }
 224       }
 225
 226       free(rgba);
 227    }
 228
 229    void
 230    get_tile_z(unsigned x, unsigned y, unsigned w, unsigned h, unsigned *z)
 231    {
 232       struct pipe_screen *screen = $self->texture->screen;
 233       struct pipe_transfer *transfer;
 234       transfer = screen->get_tex_transfer(screen,
 235                                           $self->texture,
 236                                           $self->face,
 237                                           $self->level,
 238                                           $self->zslice,
 239                                           PIPE_TRANSFER_READ,
 240                                           0, 0,
 241                                           $self->width,
 242                                           $self->height);
 243       if(transfer) {
 244          pipe_get_tile_z(transfer, x, y, w, h, z);
 245          screen->tex_transfer_destroy(transfer);
 246       }
 247    }
 248
 249    void
 250    put_tile_z(unsigned x, unsigned y, unsigned w, unsigned h, const unsigned *z)
 251    {
 252       struct pipe_screen *screen = $self->texture->screen;
 253       struct pipe_transfer *transfer;
 254       transfer = screen->get_tex_transfer(screen,
 255                                           $self->texture,
 256                                           $self->face,
 257                                           $self->level,
 258                                           $self->zslice,
 259                                           PIPE_TRANSFER_WRITE,
 260                                           0, 0,
 261                                           $self->width,
 262                                           $self->height);
 263       if(transfer) {
 264          pipe_put_tile_z(transfer, x, y, w, h, z);
 265          screen->tex_transfer_destroy(transfer);
 266       }
 267    }
 268
 269    void
 270    sample_rgba(float *rgba) {
 271       st_sample_surface($self, rgba);
 272    }
 273
 274    unsigned
 275    compare_tile_rgba(unsigned x, unsigned y, unsigned w, unsigned h, const float *rgba, float tol = 0.0)
 276    {
 277       struct pipe_screen *screen = $self->texture->screen;
 278       struct pipe_transfer *transfer;
 279       float *rgba2;
 280       const float *p1;
 281       const float *p2;
 282       unsigned i, j, n;
 283
 284       rgba2 = MALLOC(h*w*4*sizeof(float));
 285       if(!rgba2)
 286          return ~0;
 287
 288       transfer = screen->get_tex_transfer(screen,
 289                                           $self->texture,
 290                                           $self->face,
 291                                           $self->level,
 292                                           $self->zslice,
 293                                           PIPE_TRANSFER_WRITE,
 294                                           0, 0,
 295                                           $self->width,
 296                                           $self->height);
 297       if(!transfer) {
 298          FREE(rgba2);
 299          return ~0;
 300       }
 301
 302       pipe_get_tile_rgba(transfer, x, y, w, h, rgba2);
 303       screen->tex_transfer_destroy(transfer);
 304
 305       p1 = rgba;
 306       p2 = rgba2;
 307       n = 0;
 308       for(i = h*w; i; --i) {
 309          unsigned differs = 0;
 310          for(j = 4; j; --j) {
 311             float delta = *p2++ - *p1++;
 312             if (delta < -tol || delta > tol)
 313                 differs = 1;
 314          }
 315          n += differs;
 316       }
 317
 318       FREE(rgba2);
 319
 320       return n;
 321    }
 322
 323 };
 324
 325 struct st_buffer {
 326 };
 327
 328 %extend st_buffer {
 329
 330    ~st_buffer() {
 331       st_buffer_destroy($self);
 332    }
 333
 334    unsigned __len__(void)
 335    {
 336       assert(p_atomic_read(&$self->buffer->reference.count) > 0);
 337       return $self->buffer->size;
 338    }
 339
 340    %cstring_output_allocate_size(char **STRING, int *LENGTH, free(*$1));
 341    void read(char **STRING, int *LENGTH)
 342    {
 343       struct pipe_screen *screen = $self->st_dev->screen;
 344       const char *map;
 345
 346       assert(p_atomic_read(&$self->buffer->reference.count) > 0);
 347
 348       *LENGTH = $self->buffer->size;
 349       *STRING = (char *) malloc($self->buffer->size);
 350       if(!*STRING)
 351          return;
 352
 353       map = pipe_buffer_map(screen, $self->buffer, PIPE_BUFFER_USAGE_CPU_READ);
 354       if(map) {
 355          memcpy(*STRING, map, $self->buffer->size);
 356          pipe_buffer_unmap(screen, $self->buffer);
 357       }
 358    }
 359
 360    %cstring_input_binary(const char *STRING, unsigned LENGTH);
 361    void write(const char *STRING, unsigned LENGTH, unsigned offset = 0)
 362    {
 363       struct pipe_screen *screen = $self->st_dev->screen;
 364       char *map;
 365
 366       assert(p_atomic_read(&$self->buffer->reference.count) > 0);
 367
 368       if(offset > $self->buffer->size) {
 369          PyErr_SetString(PyExc_ValueError, "offset must be smaller than buffer size");
 370          return;
 371       }
 372
 373       if(offset + LENGTH > $self->buffer->size) {
 374          PyErr_SetString(PyExc_ValueError, "data length must fit inside the buffer");
 375          return;
 376       }
 377
 378       map = pipe_buffer_map(screen, $self->buffer, PIPE_BUFFER_USAGE_CPU_WRITE);
 379       if(map) {
 380          memcpy(map + offset, STRING, LENGTH);
 381          pipe_buffer_unmap(screen, $self->buffer);
 382       }
 383    }
 384 };