src/gallium/state_trackers/python/p_texture.i

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   3  * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
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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, $self);
  99       surface->face = face;
 100       surface->level = level;
 101       surface->zslice = zslice;
 102
 103       return surface;
 104
 105    fail:
 106       return NULL;
 107    }
 108
 109 };
 110
 111 struct st_surface
 112 {
 113    %immutable;
 114
 115    struct pipe_texture *texture;
 116    unsigned face;
 117    unsigned level;
 118    unsigned zslice;
 119
 120 };
 121
 122 %extend st_surface {
 123
 124    %immutable;
 125
 126    unsigned format;
 127    unsigned width;
 128    unsigned height;
 129
 130    ~st_surface() {
 131       pipe_texture_reference(&$self->texture, NULL);
 132       FREE($self);
 133    }
 134
 135    void
 136    get_tile_raw(unsigned x, unsigned y, unsigned w, unsigned h, char *raw, unsigned stride)
 137    {
 138       struct pipe_screen *screen = $self->texture->screen;
 139       struct pipe_transfer *transfer;
 140       transfer = screen->get_tex_transfer(screen,
 141                                           $self->texture,
 142                                           $self->face,
 143                                           $self->level,
 144                                           $self->zslice,
 145                                           PIPE_TRANSFER_READ,
 146                                           x, y, w, h);
 147       if(transfer) {
 148          pipe_get_tile_raw(transfer, 0, 0, w, h, raw, stride);
 149          screen->tex_transfer_destroy(transfer);
 150       }
 151    }
 152
 153    void
 154    put_tile_raw(unsigned x, unsigned y, unsigned w, unsigned h, const char *raw, unsigned stride)
 155    {
 156       struct pipe_screen *screen = $self->texture->screen;
 157       struct pipe_transfer *transfer;
 158       transfer = screen->get_tex_transfer(screen,
 159                                           $self->texture,
 160                                           $self->face,
 161                                           $self->level,
 162                                           $self->zslice,
 163                                           PIPE_TRANSFER_WRITE,
 164                                           x, y, w, h);
 165       if(transfer) {
 166          pipe_put_tile_raw(transfer, 0, 0, w, h, raw, stride);
 167          screen->tex_transfer_destroy(transfer);
 168       }
 169    }
 170
 171    void
 172    get_tile_rgba(unsigned x, unsigned y, unsigned w, unsigned h, float *rgba)
 173    {
 174       struct pipe_screen *screen = $self->texture->screen;
 175       struct pipe_transfer *transfer;
 176       transfer = screen->get_tex_transfer(screen,
 177                                           $self->texture,
 178                                           $self->face,
 179                                           $self->level,
 180                                           $self->zslice,
 181                                           PIPE_TRANSFER_READ,
 182                                           x, y, w, h);
 183       if(transfer) {
 184          pipe_get_tile_rgba(transfer, 0, 0, w, h, rgba);
 185          screen->tex_transfer_destroy(transfer);
 186       }
 187    }
 188
 189    void
 190    put_tile_rgba(unsigned x, unsigned y, unsigned w, unsigned h, const float *rgba)
 191    {
 192       struct pipe_screen *screen = $self->texture->screen;
 193       struct pipe_transfer *transfer;
 194       transfer = screen->get_tex_transfer(screen,
 195                                           $self->texture,
 196                                           $self->face,
 197                                           $self->level,
 198                                           $self->zslice,
 199                                           PIPE_TRANSFER_WRITE,
 200                                           x, y, w, h);
 201       if(transfer) {
 202          pipe_put_tile_rgba(transfer, 0, 0, w, h, rgba);
 203          screen->tex_transfer_destroy(transfer);
 204       }
 205    }
 206
 207    %cstring_output_allocate_size(char **STRING, int *LENGTH, free(*$1));
 208    void
 209    get_tile_rgba8(unsigned x, unsigned y, unsigned w, unsigned h, char **STRING, int *LENGTH)
 210    {
 211       struct pipe_screen *screen = $self->texture->screen;
 212       struct pipe_transfer *transfer;
 213       float *rgba;
 214       unsigned char *rgba8;
 215       unsigned i, j, k;
 216
 217       *LENGTH = 0;
 218       *STRING = NULL;
 219
 220       if (!$self)
 221          return;
 222
 223       *LENGTH = h*w*4;
 224       *STRING = (char *) malloc(*LENGTH);
 225       if(!*STRING)
 226          return;
 227
 228       rgba = malloc(w*4*sizeof(float));
 229       if(!rgba)
 230          return;
 231
 232       rgba8 = (unsigned char *) *STRING;
 233
 234       for(j = 0; j < h; ++j) {
 235          transfer = screen->get_tex_transfer(screen,
 236                                              $self->texture,
 237                                              $self->face,
 238                                              $self->level,
 239                                              $self->zslice,
 240                                              PIPE_TRANSFER_READ,
 241                                              x, y + j,
 242                                              w,
 243                                              1);
 244          if(transfer) {
 245             pipe_get_tile_rgba(transfer,
 246                                0, 0, w, 1,
 247                                rgba);
 248             for(i = 0; i < w; ++i)
 249                for(k = 0; k <4; ++k)
 250                   rgba8[j*w*4 + i*4 + k] = float_to_ubyte(rgba[i*4 + k]);
 251             screen->tex_transfer_destroy(transfer);
 252          }
 253       }
 254
 255       free(rgba);
 256    }
 257
 258    void
 259    get_tile_z(unsigned x, unsigned y, unsigned w, unsigned h, unsigned *z)
 260    {
 261       struct pipe_screen *screen = $self->texture->screen;
 262       struct pipe_transfer *transfer;
 263       transfer = screen->get_tex_transfer(screen,
 264                                           $self->texture,
 265                                           $self->face,
 266                                           $self->level,
 267                                           $self->zslice,
 268                                           PIPE_TRANSFER_READ,
 269                                           x, y, w, h);
 270       if(transfer) {
 271          pipe_get_tile_z(transfer, 0, 0, w, h, z);
 272          screen->tex_transfer_destroy(transfer);
 273       }
 274    }
 275
 276    void
 277    put_tile_z(unsigned x, unsigned y, unsigned w, unsigned h, const unsigned *z)
 278    {
 279       struct pipe_screen *screen = $self->texture->screen;
 280       struct pipe_transfer *transfer;
 281       transfer = screen->get_tex_transfer(screen,
 282                                           $self->texture,
 283                                           $self->face,
 284                                           $self->level,
 285                                           $self->zslice,
 286                                           PIPE_TRANSFER_WRITE,
 287                                           x, y, w, h);
 288       if(transfer) {
 289          pipe_put_tile_z(transfer, 0, 0, w, h, z);
 290          screen->tex_transfer_destroy(transfer);
 291       }
 292    }
 293
 294    void
 295    sample_rgba(float *rgba) {
 296       st_sample_surface($self, rgba);
 297    }
 298
 299    unsigned
 300    compare_tile_rgba(unsigned x, unsigned y, unsigned w, unsigned h, const float *rgba, float tol = 0.0)
 301    {
 302       struct pipe_screen *screen = $self->texture->screen;
 303       struct pipe_transfer *transfer;
 304       float *rgba2;
 305       const float *p1;
 306       const float *p2;
 307       unsigned i, j, n;
 308
 309       rgba2 = MALLOC(h*w*4*sizeof(float));
 310       if(!rgba2)
 311          return ~0;
 312
 313       transfer = screen->get_tex_transfer(screen,
 314                                           $self->texture,
 315                                           $self->face,
 316                                           $self->level,
 317                                           $self->zslice,
 318                                           PIPE_TRANSFER_READ,
 319                                           x, y, w, h);
 320       if(!transfer) {
 321          FREE(rgba2);
 322          return ~0;
 323       }
 324
 325       pipe_get_tile_rgba(transfer, 0, 0, w, h, rgba2);
 326       screen->tex_transfer_destroy(transfer);
 327
 328       p1 = rgba;
 329       p2 = rgba2;
 330       n = 0;
 331       for(i = h*w; i; --i) {
 332          unsigned differs = 0;
 333          for(j = 4; j; --j) {
 334             float delta = *p2++ - *p1++;
 335             if (delta < -tol || delta > tol)
 336                 differs = 1;
 337          }
 338          n += differs;
 339       }
 340
 341       FREE(rgba2);
 342
 343       return n;
 344    }
 345
 346 };
 347
 348 %{
 349    static enum pipe_format
 350    st_surface_format_get(struct st_surface *surface)
 351    {
 352       return surface->texture->format;
 353    }
 354
 355    static unsigned
 356    st_surface_width_get(struct st_surface *surface)
 357    {
 358       return surface->texture->width[surface->level];
 359    }
 360
 361    static unsigned
 362    st_surface_height_get(struct st_surface *surface)
 363    {
 364       return surface->texture->height[surface->level];
 365    }
 366 %}
 367
 368 /* Avoid naming conflict with p_inlines.h's pipe_buffer_read/write */
 369 %rename(read) pipe_buffer_read_;
 370 %rename(write) pipe_buffer_write_;
 371
 372 %extend pipe_buffer {
 373
 374    ~pipe_buffer() {
 375       struct pipe_buffer *ptr = $self;
 376       pipe_buffer_reference(&ptr, NULL);
 377    }
 378
 379    unsigned __len__(void)
 380    {
 381       assert(p_atomic_read(&$self->reference.count) > 0);
 382       return $self->size;
 383    }
 384
 385    %cstring_output_allocate_size(char **STRING, int *LENGTH, free(*$1));
 386    void read_(char **STRING, int *LENGTH)
 387    {
 388       struct pipe_screen *screen = $self->screen;
 389
 390       assert(p_atomic_read(&$self->reference.count) > 0);
 391
 392       *LENGTH = $self->size;
 393       *STRING = (char *) malloc($self->size);
 394       if(!*STRING)
 395          return;
 396
 397       pipe_buffer_read(screen, $self, 0, $self->size, STRING);
 398    }
 399
 400    %cstring_input_binary(const char *STRING, unsigned LENGTH);
 401    void write_(const char *STRING, unsigned LENGTH, unsigned offset = 0)
 402    {
 403       struct pipe_screen *screen = $self->screen;
 404
 405       assert(p_atomic_read(&$self->reference.count) > 0);
 406
 407       if(offset > $self->size)
 408          SWIG_exception(SWIG_ValueError, "offset must be smaller than buffer size");
 409
 410       if(offset + LENGTH > $self->size)
 411          SWIG_exception(SWIG_ValueError, "data length must fit inside the buffer");
 412
 413       pipe_buffer_write(screen, $self, offset, LENGTH, STRING);
 414
 415 fail:
 416       return;
 417    }
 418 };