src/gallium/state_trackers/python/p_texture.i

   1  /**************************************************************************
   2  *
   3  * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  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 = $self;
  58       pipe_texture_reference(&ptr, NULL);
  59    }
  60
  61    unsigned get_width(unsigned level=0) {
  62       return u_minify($self->width0, level);
  63    }
  64
  65    unsigned get_height(unsigned level=0) {
  66       return u_minify($self->height0, level);
  67    }
  68
  69    unsigned get_depth(unsigned level=0) {
  70       return u_minify($self->depth0, level);
  71    }
  72
  73    /** Get a surface which is a "view" into a texture */
  74    struct st_surface *
  75    get_surface(unsigned face=0, unsigned level=0, unsigned zslice=0)
  76    {
  77       struct st_surface *surface;
  78
  79       if(face >= ($self->target == PIPE_TEXTURE_CUBE ? 6U : 1U))
  80          SWIG_exception(SWIG_ValueError, "face out of bounds");
  81       if(level > $self->last_level)
  82          SWIG_exception(SWIG_ValueError, "level out of bounds");
  83       if(zslice >= u_minify($self->depth0, level))
  84          SWIG_exception(SWIG_ValueError, "zslice out of bounds");
  85
  86       surface = CALLOC_STRUCT(st_surface);
  87       if(!surface)
  88          return NULL;
  89
  90       pipe_texture_reference(&surface->texture, $self);
  91       surface->face = face;
  92       surface->level = level;
  93       surface->zslice = zslice;
  94
  95       return surface;
  96
  97    fail:
  98       return NULL;
  99    }
 100
 101 };
 102
 103 struct st_surface
 104 {
 105    %immutable;
 106
 107    struct pipe_texture *texture;
 108    unsigned face;
 109    unsigned level;
 110    unsigned zslice;
 111
 112 };
 113
 114 %extend st_surface {
 115
 116    %immutable;
 117
 118    unsigned format;
 119    unsigned width;
 120    unsigned height;
 121
 122    ~st_surface() {
 123       pipe_texture_reference(&$self->texture, NULL);
 124       FREE($self);
 125    }
 126
 127    %cstring_output_allocate_size(char **STRING, int *LENGTH, free(*$1));
 128    void get_tile_raw(struct st_context *ctx, unsigned x, unsigned y, unsigned w, unsigned h, char **STRING, int *LENGTH)
 129    {
 130       struct pipe_texture *texture = $self->texture;
 131       struct pipe_context *pipe = ctx->pipe;
 132       struct pipe_transfer *transfer;
 133       unsigned stride;
 134
 135       stride = util_format_get_stride(texture->format, w);
 136       *LENGTH = util_format_get_nblocksy(texture->format, h) * stride;
 137       *STRING = (char *) malloc(*LENGTH);
 138       if(!*STRING)
 139          return;
 140
 141       transfer = pipe->get_tex_transfer(pipe,
 142                                           $self->texture,
 143                                           $self->face,
 144                                           $self->level,
 145                                           $self->zslice,
 146                                           PIPE_TRANSFER_READ,
 147                                           x, y, w, h);
 148       if(transfer) {
 149          pipe_get_tile_raw(pipe, transfer, 0, 0, w, h, *STRING, stride);
 150          pipe->tex_transfer_destroy(pipe, transfer);
 151       }
 152    }
 153
 154    %cstring_input_binary(const char *STRING, unsigned LENGTH);
 155    void put_tile_raw(struct st_context *ctx, unsigned x, unsigned y, unsigned w, unsigned h, const char *STRING, unsigned LENGTH, unsigned stride = 0)
 156    {
 157       struct pipe_texture *texture = $self->texture;
 158       struct pipe_context *pipe = ctx->pipe;
 159       struct pipe_transfer *transfer;
 160
 161       if(stride == 0)
 162          stride = util_format_get_stride(texture->format, w);
 163
 164       if(LENGTH < util_format_get_nblocksy(texture->format, h) * stride)
 165          SWIG_exception(SWIG_ValueError, "offset must be smaller than buffer size");
 166
 167       transfer = pipe->get_tex_transfer(pipe,
 168                                           $self->texture,
 169                                           $self->face,
 170                                           $self->level,
 171                                           $self->zslice,
 172                                           PIPE_TRANSFER_WRITE,
 173                                           x, y, w, h);
 174       if(!transfer)
 175          SWIG_exception(SWIG_MemoryError, "couldn't initiate transfer");
 176
 177       pipe_put_tile_raw(pipe, transfer, 0, 0, w, h, STRING, stride);
 178       pipe->tex_transfer_destroy(pipe, transfer);
 179
 180    fail:
 181       return;
 182    }
 183
 184    void get_tile_rgba(struct st_context *ctx, unsigned x, unsigned y, unsigned w, unsigned h, float *rgba)
 185    {
 186       struct pipe_context *pipe = ctx->pipe;
 187       struct pipe_transfer *transfer;
 188       transfer = pipe->get_tex_transfer(pipe,
 189                                           $self->texture,
 190                                           $self->face,
 191                                           $self->level,
 192                                           $self->zslice,
 193                                           PIPE_TRANSFER_READ,
 194                                           x, y, w, h);
 195       if(transfer) {
 196          pipe_get_tile_rgba(pipe, transfer, 0, 0, w, h, rgba);
 197          pipe->tex_transfer_destroy(pipe, transfer);
 198       }
 199    }
 200
 201    void
 202       put_tile_rgba(struct st_context *ctx, unsigned x, unsigned y, unsigned w, unsigned h, const float *rgba)
 203    {
 204       struct pipe_context *pipe = ctx->pipe;
 205       struct pipe_transfer *transfer;
 206       transfer = pipe->get_tex_transfer(pipe,
 207                                           $self->texture,
 208                                           $self->face,
 209                                           $self->level,
 210                                           $self->zslice,
 211                                           PIPE_TRANSFER_WRITE,
 212                                           x, y, w, h);
 213       if(transfer) {
 214          pipe_put_tile_rgba(pipe, transfer, 0, 0, w, h, rgba);
 215          pipe->tex_transfer_destroy(pipe, transfer);
 216       }
 217    }
 218
 219    %cstring_output_allocate_size(char **STRING, int *LENGTH, free(*$1));
 220    void
 221    get_tile_rgba8(struct st_context *ctx, unsigned x, unsigned y, unsigned w, unsigned h, char **STRING, int *LENGTH)
 222    {
 223       struct pipe_context *pipe = ctx->pipe;
 224       struct pipe_transfer *transfer;
 225       float *rgba;
 226       unsigned char *rgba8;
 227       unsigned i, j, k;
 228
 229       *LENGTH = 0;
 230       *STRING = NULL;
 231
 232       if (!$self)
 233          return;
 234
 235       *LENGTH = h*w*4;
 236       *STRING = (char *) malloc(*LENGTH);
 237       if(!*STRING)
 238          return;
 239
 240       rgba = malloc(h*w*4*sizeof(float));
 241       if(!rgba)
 242          return;
 243
 244       rgba8 = (unsigned char *) *STRING;
 245
 246       transfer = pipe->get_tex_transfer(pipe,
 247                                           $self->texture,
 248                                           $self->face,
 249                                           $self->level,
 250                                           $self->zslice,
 251                                           PIPE_TRANSFER_READ,
 252                                           x, y,
 253                                           w, h);
 254       if(transfer) {
 255          pipe_get_tile_rgba(pipe, transfer, 0, 0, w, h, rgba);
 256          for(j = 0; j < h; ++j) {
 257             for(i = 0; i < w; ++i)
 258                for(k = 0; k <4; ++k)
 259                   rgba8[j*w*4 + i*4 + k] = float_to_ubyte(rgba[j*w*4 + i*4 + k]);
 260          }
 261          pipe->tex_transfer_destroy(pipe, transfer);
 262       }
 263
 264       free(rgba);
 265    }
 266
 267    void get_tile_z(struct st_context *ctx, unsigned x, unsigned y, unsigned w, unsigned h, unsigned *z)
 268    {
 269       struct pipe_context *pipe = ctx->pipe;
 270       struct pipe_transfer *transfer;
 271       transfer = pipe->get_tex_transfer(pipe,
 272                                           $self->texture,
 273                                           $self->face,
 274                                           $self->level,
 275                                           $self->zslice,
 276                                           PIPE_TRANSFER_READ,
 277                                           x, y, w, h);
 278       if(transfer) {
 279          pipe_get_tile_z(pipe, transfer, 0, 0, w, h, z);
 280          pipe->tex_transfer_destroy(pipe, transfer);
 281       }
 282    }
 283
 284    void put_tile_z(struct st_context *ctx, unsigned x, unsigned y, unsigned w, unsigned h, const unsigned *z)
 285    {
 286       struct pipe_context *pipe = ctx->pipe;
 287       struct pipe_transfer *transfer;
 288       transfer = pipe->get_tex_transfer(pipe,
 289                                           $self->texture,
 290                                           $self->face,
 291                                           $self->level,
 292                                           $self->zslice,
 293                                           PIPE_TRANSFER_WRITE,
 294                                           x, y, w, h);
 295       if(transfer) {
 296          pipe_put_tile_z(pipe, transfer, 0, 0, w, h, z);
 297          pipe->tex_transfer_destroy(pipe, transfer);
 298       }
 299    }
 300
 301 /*
 302    void
 303    sample_rgba(float *rgba) {
 304       st_sample_surface($self, rgba);
 305    }
 306 */
 307
 308    unsigned compare_tile_rgba(struct st_context *ctx, unsigned x, unsigned y, unsigned w, unsigned h, const float *rgba, float tol = 0.0)
 309    {
 310       struct pipe_context *pipe = ctx->pipe;
 311       struct pipe_transfer *transfer;
 312       float *rgba2;
 313       const float *p1;
 314       const float *p2;
 315       unsigned i, j, n;
 316
 317       rgba2 = MALLOC(h*w*4*sizeof(float));
 318       if(!rgba2)
 319          return ~0;
 320
 321       transfer = pipe->get_tex_transfer(pipe,
 322                                           $self->texture,
 323                                           $self->face,
 324                                           $self->level,
 325                                           $self->zslice,
 326                                           PIPE_TRANSFER_READ,
 327                                           x, y, w, h);
 328       if(!transfer) {
 329          FREE(rgba2);
 330          return ~0;
 331       }
 332
 333       pipe_get_tile_rgba(pipe, transfer, 0, 0, w, h, rgba2);
 334       pipe->tex_transfer_destroy(pipe, transfer);
 335
 336       p1 = rgba;
 337       p2 = rgba2;
 338       n = 0;
 339       for(i = h*w; i; --i) {
 340          unsigned differs = 0;
 341          for(j = 4; j; --j) {
 342             float delta = *p2++ - *p1++;
 343             if (delta < -tol || delta > tol)
 344                 differs = 1;
 345          }
 346          n += differs;
 347       }
 348
 349       FREE(rgba2);
 350
 351       return n;
 352    }
 353
 354 };
 355
 356 %{
 357    static enum pipe_format
 358    st_surface_format_get(struct st_surface *surface)
 359    {
 360       return surface->texture->format;
 361    }
 362
 363    static unsigned
 364    st_surface_width_get(struct st_surface *surface)
 365    {
 366       return u_minify(surface->texture->width0, surface->level);
 367    }
 368
 369    static unsigned
 370    st_surface_height_get(struct st_surface *surface)
 371    {
 372       return u_minify(surface->texture->height0, surface->level);
 373    }
 374 %}
 375
 376 /* Avoid naming conflict with p_inlines.h's pipe_buffer_read/write */
 377 %rename(read) read_;
 378 %rename(write) write_;
 379
 380 %extend pipe_buffer {
 381
 382    ~pipe_buffer() {
 383       struct pipe_buffer *ptr = $self;
 384       pipe_buffer_reference(&ptr, NULL);
 385    }
 386
 387    unsigned __len__(void)
 388    {
 389       assert(p_atomic_read(&$self->reference.count) > 0);
 390       return $self->size;
 391    }
 392
 393    %cstring_output_allocate_size(char **STRING, int *LENGTH, free(*$1));
 394    void read_(char **STRING, int *LENGTH)
 395    {
 396       struct pipe_screen *screen = $self->screen;
 397
 398       assert(p_atomic_read(&$self->reference.count) > 0);
 399
 400       *LENGTH = $self->size;
 401       *STRING = (char *) malloc($self->size);
 402       if(!*STRING)
 403          return;
 404
 405       pipe_buffer_read(screen, $self, 0, $self->size, *STRING);
 406    }
 407
 408    %cstring_input_binary(const char *STRING, unsigned LENGTH);
 409    void write_(const char *STRING, unsigned LENGTH, unsigned offset = 0)
 410    {
 411       struct pipe_screen *screen = $self->screen;
 412
 413       assert(p_atomic_read(&$self->reference.count) > 0);
 414
 415       if(offset > $self->size)
 416          SWIG_exception(SWIG_ValueError, "offset must be smaller than buffer size");
 417
 418       if(offset + LENGTH > $self->size)
 419          SWIG_exception(SWIG_ValueError, "data length must fit inside the buffer");
 420
 421       pipe_buffer_write(screen, $self, offset, LENGTH, STRING);
 422
 423 fail:
 424       return;
 425    }
 426 };