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 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 = $self;
  95       pipe_surface_reference(&ptr, NULL);
  96    }
  97
  98    // gets mapped to pipe_surface_map automatically
  99    void * map( unsigned flags );
 100
 101    // gets mapped to pipe_surface_unmap automatically
 102    void unmap( void );
 103
 104    void
 105    get_tile_raw(unsigned x, unsigned y, unsigned w, unsigned h, char *raw, unsigned stride) {
 106       pipe_get_tile_raw($self, x, y, w, h, raw, stride);
 107    }
 108
 109    void
 110    put_tile_raw(unsigned x, unsigned y, unsigned w, unsigned h, const char *raw, unsigned stride) {
 111       pipe_put_tile_raw($self, x, y, w, h, raw, stride);
 112    }
 113
 114    void
 115    get_tile_rgba(unsigned x, unsigned y, unsigned w, unsigned h, float *rgba) {
 116       pipe_get_tile_rgba($self, x, y, w, h, rgba);
 117    }
 118
 119    void
 120    put_tile_rgba(unsigned x, unsigned y, unsigned w, unsigned h, const float *rgba) {
 121       pipe_put_tile_rgba($self, x, y, w, h, rgba);
 122    }
 123
 124    void
 125    get_tile_z(unsigned x, unsigned y, unsigned w, unsigned h, unsigned *z) {
 126       pipe_get_tile_z($self, x, y, w, h, z);
 127    }
 128
 129    void
 130    put_tile_z(unsigned x, unsigned y, unsigned w, unsigned h, const unsigned *z) {
 131       pipe_put_tile_z($self, x, y, w, h, z);
 132    }
 133
 134    void
 135    sample_rgba(float *rgba) {
 136       st_sample_surface($self, rgba);
 137    }
 138
 139    unsigned
 140    compare_tile_rgba(unsigned x, unsigned y, unsigned w, unsigned h, const float *rgba, float tol = 0.0)
 141    {
 142       float *rgba2;
 143       const float *p1;
 144       const float *p2;
 145       unsigned i, j, n;
 146
 147       rgba2 = MALLOC(h*w*4*sizeof(float));
 148       if(!rgba2)
 149          return ~0;
 150
 151       pipe_get_tile_rgba($self, x, y, w, h, rgba2);
 152
 153       p1 = rgba;
 154       p2 = rgba2;
 155       n = 0;
 156       for(i = h*w; i; --i) {
 157          unsigned differs = 0;
 158          for(j = 4; j; --j) {
 159             float delta = *p2++ - *p1++;
 160             if (delta < -tol || delta > tol)
 161                 differs = 1;
 162          }
 163          n += differs;
 164       }
 165
 166       FREE(rgba2);
 167
 168       return n;
 169    }
 170
 171 };
 172
 173 struct st_buffer {
 174 };
 175
 176 %extend st_buffer {
 177
 178    ~st_buffer() {
 179       st_buffer_destroy($self);
 180    }
 181
 182    unsigned __len__(void)
 183    {
 184       assert($self->buffer->refcount);
 185       return $self->buffer->size;
 186    }
 187
 188    %cstring_output_allocate_size(char **STRING, int *LENGTH, free(*$1));
 189    void read(char **STRING, int *LENGTH)
 190    {
 191       struct pipe_screen *screen = $self->st_dev->screen;
 192       const char *map;
 193
 194       assert($self->buffer->refcount);
 195
 196       *LENGTH = $self->buffer->size;
 197       *STRING = (char *) malloc($self->buffer->size);
 198       if(!*STRING)
 199          return;
 200
 201       map = pipe_buffer_map(screen, $self->buffer, PIPE_BUFFER_USAGE_CPU_READ);
 202       if(map) {
 203          memcpy(*STRING, map, $self->buffer->size);
 204          pipe_buffer_unmap(screen, $self->buffer);
 205       }
 206    }
 207
 208    %cstring_input_binary(const char *STRING, unsigned LENGTH);
 209    void write(const char *STRING, unsigned LENGTH, unsigned offset = 0)
 210    {
 211       struct pipe_screen *screen = $self->st_dev->screen;
 212       char *map;
 213
 214       assert($self->buffer->refcount);
 215
 216       if(offset > $self->buffer->size) {
 217          PyErr_SetString(PyExc_ValueError, "offset must be smaller than buffer size");
 218          return;
 219       }
 220
 221       if(offset + LENGTH > $self->buffer->size) {
 222          PyErr_SetString(PyExc_ValueError, "data length must fit inside the buffer");
 223          return;
 224       }
 225
 226       map = pipe_buffer_map(screen, $self->buffer, PIPE_BUFFER_USAGE_CPU_WRITE);
 227       if(map) {
 228          memcpy(map + offset, STRING, LENGTH);
 229          pipe_buffer_unmap(screen, $self->buffer);
 230       }
 231    }
 232 };