src/gallium/state_trackers/python/p_context.i

   1  /**************************************************************************
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   3  * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
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  11  * permit persons to whom the Software is furnished to do so, subject to
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  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
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  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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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 %nodefaultctor st_context;
  36 %nodefaultdtor st_context;
  37
  38 struct st_context {
  39 };
  40
  41 %extend st_context {
  42
  43    ~st_context() {
  44       st_context_destroy($self);
  45    }
  46
  47    /*
  48     * State functions (create/bind/destroy state objects)
  49     */
  50
  51    void set_blend( const struct pipe_blend_state *state ) {
  52       cso_set_blend($self->cso, state);
  53    }
  54
  55    void set_fragment_sampler( unsigned index, const struct pipe_sampler_state *state ) {
  56       cso_single_sampler($self->cso, index, state);
  57       cso_single_sampler_done($self->cso);
  58    }
  59
  60    void set_vertex_sampler( unsigned index, const struct pipe_sampler_state *state ) {
  61       cso_single_vertex_sampler($self->cso, index, state);
  62       cso_single_vertex_sampler_done($self->cso);
  63    }
  64
  65    void set_rasterizer( const struct pipe_rasterizer_state *state ) {
  66       cso_set_rasterizer($self->cso, state);
  67    }
  68
  69    void set_depth_stencil_alpha(const struct pipe_depth_stencil_alpha_state *state) {
  70       cso_set_depth_stencil_alpha($self->cso, state);
  71    }
  72
  73    void set_fragment_shader( const struct pipe_shader_state *state ) {
  74       void *fs;
  75
  76       if(!state) {
  77          cso_set_fragment_shader_handle($self->cso, NULL);
  78          return;
  79       }
  80
  81       fs = $self->pipe->create_fs_state($self->pipe, state);
  82       if(!fs)
  83          return;
  84
  85       if(cso_set_fragment_shader_handle($self->cso, fs) != PIPE_OK)
  86          return;
  87
  88       cso_delete_fragment_shader($self->cso, $self->fs);
  89       $self->fs = fs;
  90    }
  91
  92    void set_vertex_shader( const struct pipe_shader_state *state ) {
  93       void *vs;
  94
  95       if(!state) {
  96          cso_set_vertex_shader_handle($self->cso, NULL);
  97          return;
  98       }
  99
 100       vs = $self->pipe->create_vs_state($self->pipe, state);
 101       if(!vs)
 102          return;
 103
 104       if(cso_set_vertex_shader_handle($self->cso, vs) != PIPE_OK)
 105          return;
 106
 107       cso_delete_vertex_shader($self->cso, $self->vs);
 108       $self->vs = vs;
 109    }
 110
 111    void set_geometry_shader( const struct pipe_shader_state *state ) {
 112       void *gs;
 113
 114       if(!state) {
 115          cso_set_geometry_shader_handle($self->cso, NULL);
 116          return;
 117       }
 118
 119       gs = $self->pipe->create_gs_state($self->pipe, state);
 120       if(!gs)
 121          return;
 122
 123       if(cso_set_geometry_shader_handle($self->cso, gs) != PIPE_OK)
 124          return;
 125
 126       cso_delete_geometry_shader($self->cso, $self->gs);
 127       $self->gs = gs;
 128    }
 129
 130    /*
 131     * Parameter-like state (or properties)
 132     */
 133
 134    void set_blend_color(const struct pipe_blend_color *state ) {
 135       cso_set_blend_color($self->cso, state);
 136    }
 137
 138    void set_stencil_ref(const struct pipe_stencil_ref *state ) {
 139       cso_set_stencil_ref($self->cso, state);
 140    }
 141
 142    void set_clip(const struct pipe_clip_state *state ) {
 143       $self->pipe->set_clip_state($self->pipe, state);
 144    }
 145
 146    void set_constant_buffer(unsigned shader, unsigned index,
 147                             struct pipe_buffer *buffer )
 148    {
 149       $self->pipe->set_constant_buffer($self->pipe, shader, index, buffer);
 150    }
 151
 152    void set_framebuffer(const struct pipe_framebuffer_state *state )
 153    {
 154       memcpy(&$self->framebuffer, state, sizeof *state);
 155       cso_set_framebuffer($self->cso, state);
 156    }
 157
 158    void set_polygon_stipple(const struct pipe_poly_stipple *state ) {
 159       $self->pipe->set_polygon_stipple($self->pipe, state);
 160    }
 161
 162    void set_scissor(const struct pipe_scissor_state *state ) {
 163       $self->pipe->set_scissor_state($self->pipe, state);
 164    }
 165
 166    void set_viewport(const struct pipe_viewport_state *state) {
 167       cso_set_viewport($self->cso, state);
 168    }
 169
 170    void set_fragment_sampler_texture(unsigned index,
 171                                      struct pipe_texture *texture) {
 172       if(!texture)
 173          texture = $self->default_texture;
 174       pipe_texture_reference(&$self->fragment_sampler_textures[index], texture);
 175       $self->pipe->set_fragment_sampler_textures($self->pipe,
 176                                                  PIPE_MAX_SAMPLERS,
 177                                                  $self->fragment_sampler_textures);
 178    }
 179
 180    void set_vertex_sampler_texture(unsigned index,
 181                                    struct pipe_texture *texture) {
 182       if(!texture)
 183          texture = $self->default_texture;
 184       pipe_texture_reference(&$self->vertex_sampler_textures[index], texture);
 185       $self->pipe->set_vertex_sampler_textures($self->pipe,
 186                                                PIPE_MAX_VERTEX_SAMPLERS,
 187                                                $self->vertex_sampler_textures);
 188    }
 189
 190    void set_vertex_buffer(unsigned index,
 191                           unsigned stride,
 192                           unsigned max_index,
 193                           unsigned buffer_offset,
 194                           struct pipe_buffer *buffer)
 195    {
 196       unsigned i;
 197       struct pipe_vertex_buffer state;
 198
 199       memset(&state, 0, sizeof(state));
 200       state.stride = stride;
 201       state.max_index = max_index;
 202       state.buffer_offset = buffer_offset;
 203       state.buffer = buffer;
 204
 205       memcpy(&$self->vertex_buffers[index], &state, sizeof(state));
 206
 207       for(i = 0; i < PIPE_MAX_ATTRIBS; ++i)
 208          if(self->vertex_buffers[i].buffer)
 209             $self->num_vertex_buffers = i + 1;
 210
 211       $self->pipe->set_vertex_buffers($self->pipe,
 212                                       $self->num_vertex_buffers,
 213                                       $self->vertex_buffers);
 214    }
 215
 216    void set_vertex_element(unsigned index,
 217                            const struct pipe_vertex_element *element)
 218    {
 219       memcpy(&$self->vertex_elements[index], element, sizeof(*element));
 220    }
 221
 222    void set_vertex_elements(unsigned num)
 223    {
 224       $self->num_vertex_elements = num;
 225       cso_set_vertex_elements($self->cso,
 226                               $self->num_vertex_elements,
 227                               $self->vertex_elements);
 228    }
 229
 230    /*
 231     * Draw functions
 232     */
 233
 234    void draw_arrays(unsigned mode, unsigned start, unsigned count) {
 235       $self->pipe->draw_arrays($self->pipe, mode, start, count);
 236    }
 237
 238    void draw_elements( struct pipe_buffer *indexBuffer,
 239                        unsigned indexSize,
 240                        unsigned mode, unsigned start, unsigned count)
 241    {
 242       $self->pipe->draw_elements($self->pipe,
 243                                  indexBuffer,
 244                                  indexSize,
 245                                  mode, start, count);
 246    }
 247
 248    void draw_range_elements( struct pipe_buffer *indexBuffer,
 249                              unsigned indexSize, unsigned minIndex, unsigned maxIndex,
 250                              unsigned mode, unsigned start, unsigned count)
 251    {
 252       $self->pipe->draw_range_elements($self->pipe,
 253                                        indexBuffer,
 254                                        indexSize, minIndex, maxIndex,
 255                                        mode, start, count);
 256    }
 257
 258    void draw_vertices(unsigned prim,
 259                       unsigned num_verts,
 260                       unsigned num_attribs,
 261                       const float *vertices)
 262    {
 263       struct pipe_context *pipe = $self->pipe;
 264       struct pipe_screen *screen = pipe->screen;
 265       struct pipe_buffer *vbuf;
 266       float *map;
 267       unsigned size;
 268
 269       size = num_verts * num_attribs * 4 * sizeof(float);
 270
 271       vbuf = pipe_buffer_create(screen,
 272                                 32,
 273                                 PIPE_BUFFER_USAGE_VERTEX,
 274                                 size);
 275       if(!vbuf)
 276          goto error1;
 277
 278       map = pipe_buffer_map(screen, vbuf, PIPE_BUFFER_USAGE_CPU_WRITE);
 279       if (!map)
 280          goto error2;
 281       memcpy(map, vertices, size);
 282       pipe_buffer_unmap(screen, vbuf);
 283
 284       util_draw_vertex_buffer(pipe, vbuf, 0, prim, num_verts, num_attribs);
 285
 286 error2:
 287       pipe_buffer_reference(&vbuf, NULL);
 288 error1:
 289       ;
 290    }
 291
 292    void
 293    flush(unsigned flags = 0) {
 294       struct pipe_fence_handle *fence = NULL;
 295       $self->pipe->flush($self->pipe, flags | PIPE_FLUSH_RENDER_CACHE, &fence);
 296       if(fence) {
 297          /* TODO: allow asynchronous operation */
 298          $self->pipe->screen->fence_finish( $self->pipe->screen, fence, 0 );
 299          $self->pipe->screen->fence_reference( $self->pipe->screen, &fence, NULL );
 300       }
 301    }
 302
 303    /*
 304     * Surface functions
 305     */
 306
 307    void surface_copy(struct st_surface *dst,
 308                      unsigned destx, unsigned desty,
 309                      struct st_surface *src,
 310                      unsigned srcx, unsigned srcy,
 311                      unsigned width, unsigned height)
 312    {
 313       struct pipe_surface *_dst = NULL;
 314       struct pipe_surface *_src = NULL;
 315
 316       _dst = st_pipe_surface(dst, PIPE_BUFFER_USAGE_GPU_WRITE);
 317       if(!_dst)
 318          SWIG_exception(SWIG_ValueError, "couldn't acquire destination surface for writing");
 319
 320       _src = st_pipe_surface(src, PIPE_BUFFER_USAGE_GPU_READ);
 321       if(!_src)
 322          SWIG_exception(SWIG_ValueError, "couldn't acquire source surface for reading");
 323
 324       $self->pipe->surface_copy($self->pipe, _dst, destx, desty, _src, srcx, srcy, width, height);
 325
 326    fail:
 327       pipe_surface_reference(&_src, NULL);
 328       pipe_surface_reference(&_dst, NULL);
 329    }
 330
 331    void surface_fill(struct st_surface *dst,
 332                      unsigned x, unsigned y,
 333                      unsigned width, unsigned height,
 334                      unsigned value)
 335    {
 336       struct pipe_surface *_dst = NULL;
 337
 338       _dst = st_pipe_surface(dst, PIPE_BUFFER_USAGE_GPU_WRITE);
 339       if(!_dst)
 340          SWIG_exception(SWIG_ValueError, "couldn't acquire destination surface for writing");
 341
 342       $self->pipe->surface_fill($self->pipe, _dst, x, y, width, height, value);
 343
 344    fail:
 345       pipe_surface_reference(&_dst, NULL);
 346    }
 347
 348    void clear(unsigned buffers, const float *rgba, double depth = 0.0f,
 349               unsigned stencil = 0)
 350    {
 351       $self->pipe->clear($self->pipe, buffers, rgba, depth, stencil);
 352    }
 353
 354 };