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 st_surface;
  38 %nodefaultctor pipe_buffer;
  39
  40 %nodefaultdtor pipe_texture;
  41 %nodefaultdtor st_surface;
  42 %nodefaultdtor pipe_buffer;
  43
  44 %ignore pipe_texture::screen;
  45
  46 %immutable st_surface::texture;
  47 %immutable st_surface::face;
  48 %immutable st_surface::level;
  49 %immutable st_surface::zslice;
  50
  51 %newobject pipe_texture::get_surface;
  52
  53
  54 %extend pipe_texture {
  55
  56    ~pipe_texture() {
  57       struct pipe_texture *ptr = $self;
  58       pipe_texture_reference(&ptr, NULL);
  59    }
  60
  61    unsigned get_width(unsigned level=0) {
  62       return $self->width[level];
  63    }
  64
  65    unsigned get_height(unsigned level=0) {
  66       return $self->height[level];
  67    }
  68
  69    unsigned get_depth(unsigned level=0) {
  70       return $self->depth[level];
  71    }
  72
  73    unsigned get_nblocksx(unsigned level=0) {
  74       return $self->nblocksx[level];
  75    }
  76
  77    unsigned get_nblocksy(unsigned level=0) {
  78       return $self->nblocksy[level];
  79    }
  80
  81    /** Get a surface which is a "view" into a texture */
  82    struct st_surface *
  83    get_surface(unsigned face=0, unsigned level=0, unsigned zslice=0)
  84    {
  85       struct st_surface *surface;
  86
  87       if(face >= ($self->target == PIPE_TEXTURE_CUBE ? 6U : 1U))
  88          SWIG_exception(SWIG_ValueError, "face out of bounds");
  89       if(level > $self->last_level)
  90          SWIG_exception(SWIG_ValueError, "level out of bounds");
  91       if(zslice >= $self->depth[level])
  92          SWIG_exception(SWIG_ValueError, "zslice out of bounds");
  93
  94       surface = CALLOC_STRUCT(st_surface);
  95       if(!surface)
  96          return NULL;
  97
  98       pipe_texture_reference(&surface->texture, $self);
  99       surface->face = face;
 100       surface->level = level;
 101       surface->zslice = zslice;
 102
 103       return surface;
 104
 105    fail:
 106       return NULL;
 107    }
 108
 109 };
 110
 111 struct st_surface
 112 {
 113    %immutable;
 114
 115    struct pipe_texture *texture;
 116    unsigned face;
 117    unsigned level;
 118    unsigned zslice;
 119
 120 };
 121
 122 %extend st_surface {
 123
 124    %immutable;
 125
 126    unsigned format;
 127    unsigned width;
 128    unsigned height;
 129    unsigned nblocksx;
 130    unsigned nblocksy;
 131
 132    ~st_surface() {
 133       pipe_texture_reference(&$self->texture, NULL);
 134       FREE($self);
 135    }
 136
 137    void
 138    get_tile_raw(unsigned x, unsigned y, unsigned w, unsigned h, char *raw, unsigned stride)
 139    {
 140       struct pipe_screen *screen = $self->texture->screen;
 141       struct pipe_transfer *transfer;
 142       transfer = screen->get_tex_transfer(screen,
 143                                           $self->texture,
 144                                           $self->face,
 145                                           $self->level,
 146                                           $self->zslice,
 147                                           PIPE_TRANSFER_READ,
 148                                           x, y, w, h);
 149       if(transfer) {
 150          pipe_get_tile_raw(transfer, 0, 0, w, h, raw, stride);
 151          screen->tex_transfer_destroy(transfer);
 152       }
 153    }
 154
 155    void
 156    put_tile_raw(unsigned x, unsigned y, unsigned w, unsigned h, const char *raw, unsigned stride)
 157    {
 158       struct pipe_screen *screen = $self->texture->screen;
 159       struct pipe_transfer *transfer;
 160       transfer = screen->get_tex_transfer(screen,
 161                                           $self->texture,
 162                                           $self->face,
 163                                           $self->level,
 164                                           $self->zslice,
 165                                           PIPE_TRANSFER_WRITE,
 166                                           x, y, w, h);
 167       if(transfer) {
 168          pipe_put_tile_raw(transfer, 0, 0, w, h, raw, stride);
 169          screen->tex_transfer_destroy(transfer);
 170       }
 171    }
 172
 173    void
 174    get_tile_rgba(unsigned x, unsigned y, unsigned w, unsigned h, float *rgba)
 175    {
 176       struct pipe_screen *screen = $self->texture->screen;
 177       struct pipe_transfer *transfer;
 178       transfer = screen->get_tex_transfer(screen,
 179                                           $self->texture,
 180                                           $self->face,
 181                                           $self->level,
 182                                           $self->zslice,
 183                                           PIPE_TRANSFER_READ,
 184                                           x, y, w, h);
 185       if(transfer) {
 186          pipe_get_tile_rgba(transfer, 0, 0, w, h, rgba);
 187          screen->tex_transfer_destroy(transfer);
 188       }
 189    }
 190
 191    void
 192    put_tile_rgba(unsigned x, unsigned y, unsigned w, unsigned h, const float *rgba)
 193    {
 194       struct pipe_screen *screen = $self->texture->screen;
 195       struct pipe_transfer *transfer;
 196       transfer = screen->get_tex_transfer(screen,
 197                                           $self->texture,
 198                                           $self->face,
 199                                           $self->level,
 200                                           $self->zslice,
 201                                           PIPE_TRANSFER_WRITE,
 202                                           x, y, w, h);
 203       if(transfer) {
 204          pipe_put_tile_rgba(transfer, 0, 0, w, h, rgba);
 205          screen->tex_transfer_destroy(transfer);
 206       }
 207    }
 208
 209    %cstring_output_allocate_size(char **STRING, int *LENGTH, free(*$1));
 210    void
 211    get_tile_rgba8(unsigned x, unsigned y, unsigned w, unsigned h, char **STRING, int *LENGTH)
 212    {
 213       struct pipe_screen *screen = $self->texture->screen;
 214       struct pipe_transfer *transfer;
 215       float *rgba;
 216       unsigned char *rgba8;
 217       unsigned i, j, k;
 218
 219       *LENGTH = 0;
 220       *STRING = NULL;
 221
 222       if (!$self)
 223          return;
 224
 225       *LENGTH = h*w*4;
 226       *STRING = (char *) malloc(*LENGTH);
 227       if(!*STRING)
 228          return;
 229
 230       rgba = malloc(h*w*4*sizeof(float));
 231       if(!rgba)
 232          return;
 233
 234       rgba8 = (unsigned char *) *STRING;
 235
 236       transfer = screen->get_tex_transfer(screen,
 237                                           $self->texture,
 238                                           $self->face,
 239                                           $self->level,
 240                                           $self->zslice,
 241                                           PIPE_TRANSFER_READ,
 242                                           x, y,
 243                                           w, h);
 244       if(transfer) {
 245          pipe_get_tile_rgba(transfer, 0, 0, w, h, rgba);
 246          for(j = 0; j < h; ++j) {
 247             for(i = 0; i < w; ++i)
 248                for(k = 0; k <4; ++k)
 249                   rgba8[j*w*4 + i*4 + k] = float_to_ubyte(rgba[j*w*4 + i*4 + k]);
 250          }
 251          screen->tex_transfer_destroy(transfer);
 252       }
 253
 254       free(rgba);
 255    }
 256
 257    void
 258    get_tile_z(unsigned x, unsigned y, unsigned w, unsigned h, unsigned *z)
 259    {
 260       struct pipe_screen *screen = $self->texture->screen;
 261       struct pipe_transfer *transfer;
 262       transfer = screen->get_tex_transfer(screen,
 263                                           $self->texture,
 264                                           $self->face,
 265                                           $self->level,
 266                                           $self->zslice,
 267                                           PIPE_TRANSFER_READ,
 268                                           x, y, w, h);
 269       if(transfer) {
 270          pipe_get_tile_z(transfer, 0, 0, w, h, z);
 271          screen->tex_transfer_destroy(transfer);
 272       }
 273    }
 274
 275    void
 276    put_tile_z(unsigned x, unsigned y, unsigned w, unsigned h, const unsigned *z)
 277    {
 278       struct pipe_screen *screen = $self->texture->screen;
 279       struct pipe_transfer *transfer;
 280       transfer = screen->get_tex_transfer(screen,
 281                                           $self->texture,
 282                                           $self->face,
 283                                           $self->level,
 284                                           $self->zslice,
 285                                           PIPE_TRANSFER_WRITE,
 286                                           x, y, w, h);
 287       if(transfer) {
 288          pipe_put_tile_z(transfer, 0, 0, w, h, z);
 289          screen->tex_transfer_destroy(transfer);
 290       }
 291    }
 292
 293    void
 294    sample_rgba(float *rgba) {
 295       st_sample_surface($self, rgba);
 296    }
 297
 298    unsigned
 299    compare_tile_rgba(unsigned x, unsigned y, unsigned w, unsigned h, const float *rgba, float tol = 0.0)
 300    {
 301       struct pipe_screen *screen = $self->texture->screen;
 302       struct pipe_transfer *transfer;
 303       float *rgba2;
 304       const float *p1;
 305       const float *p2;
 306       unsigned i, j, n;
 307
 308       rgba2 = MALLOC(h*w*4*sizeof(float));
 309       if(!rgba2)
 310          return ~0;
 311
 312       transfer = screen->get_tex_transfer(screen,
 313                                           $self->texture,
 314                                           $self->face,
 315                                           $self->level,
 316                                           $self->zslice,
 317                                           PIPE_TRANSFER_READ,
 318                                           x, y, w, h);
 319       if(!transfer) {
 320          FREE(rgba2);
 321          return ~0;
 322       }
 323
 324       pipe_get_tile_rgba(transfer, 0, 0, w, h, rgba2);
 325       screen->tex_transfer_destroy(transfer);
 326
 327       p1 = rgba;
 328       p2 = rgba2;
 329       n = 0;
 330       for(i = h*w; i; --i) {
 331          unsigned differs = 0;
 332          for(j = 4; j; --j) {
 333             float delta = *p2++ - *p1++;
 334             if (delta < -tol || delta > tol)
 335                 differs = 1;
 336          }
 337          n += differs;
 338       }
 339
 340       FREE(rgba2);
 341
 342       return n;
 343    }
 344
 345 };
 346
 347 %{
 348    static enum pipe_format
 349    st_surface_format_get(struct st_surface *surface)
 350    {
 351       return surface->texture->format;
 352    }
 353
 354    static unsigned
 355    st_surface_width_get(struct st_surface *surface)
 356    {
 357       return surface->texture->width[surface->level];
 358    }
 359
 360    static unsigned
 361    st_surface_height_get(struct st_surface *surface)
 362    {
 363       return surface->texture->height[surface->level];
 364    }
 365
 366    static unsigned
 367    st_surface_nblocksx_get(struct st_surface *surface)
 368    {
 369       return surface->texture->nblocksx[surface->level];
 370    }
 371
 372    static unsigned
 373    st_surface_nblocksy_get(struct st_surface *surface)
 374    {
 375       return surface->texture->nblocksy[surface->level];
 376    }
 377 %}
 378
 379 /* Avoid naming conflict with p_inlines.h's pipe_buffer_read/write */
 380 %rename(read) pipe_buffer_read_;
 381 %rename(write) pipe_buffer_write_;
 382
 383 %extend pipe_buffer {
 384
 385    ~pipe_buffer() {
 386       struct pipe_buffer *ptr = $self;
 387       pipe_buffer_reference(&ptr, NULL);
 388    }
 389
 390    unsigned __len__(void)
 391    {
 392       assert(p_atomic_read(&$self->reference.count) > 0);
 393       return $self->size;
 394    }
 395
 396    %cstring_output_allocate_size(char **STRING, int *LENGTH, free(*$1));
 397    void read_(char **STRING, int *LENGTH)
 398    {
 399       struct pipe_screen *screen = $self->screen;
 400
 401       assert(p_atomic_read(&$self->reference.count) > 0);
 402
 403       *LENGTH = $self->size;
 404       *STRING = (char *) malloc($self->size);
 405       if(!*STRING)
 406          return;
 407
 408       pipe_buffer_read(screen, $self, 0, $self->size, STRING);
 409    }
 410
 411    %cstring_input_binary(const char *STRING, unsigned LENGTH);
 412    void write_(const char *STRING, unsigned LENGTH, unsigned offset = 0)
 413    {
 414       struct pipe_screen *screen = $self->screen;
 415
 416       assert(p_atomic_read(&$self->reference.count) > 0);
 417
 418       if(offset > $self->size)
 419          SWIG_exception(SWIG_ValueError, "offset must be smaller than buffer size");
 420
 421       if(offset + LENGTH > $self->size)
 422          SWIG_exception(SWIG_ValueError, "data length must fit inside the buffer");
 423
 424       pipe_buffer_write(screen, $self, offset, LENGTH, STRING);
 425
 426 fail:
 427       return;
 428    }
 429 };