src/gallium/state_trackers/python/p_context.i

   1  /**************************************************************************
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   3  * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
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  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
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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
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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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       struct pipe_sampler_view templ;
 173
 174       if(!texture)
 175          texture = $self->default_texture;
 176       pipe_sampler_view_reference(&$self->fragment_sampler_views[index], NULL);
 177       u_sampler_view_default_template(&templ,
 178                                       texture,
 179                                       texture->format);
 180       $self->fragment_sampler_views[index] = $self->pipe->create_sampler_view($self->pipe,
 181                                                                               texture,
 182                                                                               &templ);
 183       $self->pipe->set_fragment_sampler_views($self->pipe,
 184                                               PIPE_MAX_SAMPLERS,
 185                                               $self->fragment_sampler_views);
 186    }
 187
 188    void set_vertex_sampler_texture(unsigned index,
 189                                    struct pipe_texture *texture) {
 190       struct pipe_sampler_view templ;
 191
 192       if(!texture)
 193          texture = $self->default_texture;
 194       pipe_sampler_view_reference(&$self->vertex_sampler_views[index], NULL);
 195       u_sampler_view_default_template(&templ,
 196                                       texture,
 197                                       texture->format);
 198       $self->vertex_sampler_views[index] = $self->pipe->create_sampler_view($self->pipe,
 199                                                                             texture,
 200                                                                             &templ);
 201
 202       $self->pipe->set_vertex_sampler_views($self->pipe,
 203                                             PIPE_MAX_VERTEX_SAMPLERS,
 204                                             $self->vertex_sampler_views);
 205    }
 206
 207    void set_vertex_buffer(unsigned index,
 208                           unsigned stride,
 209                           unsigned max_index,
 210                           unsigned buffer_offset,
 211                           struct pipe_buffer *buffer)
 212    {
 213       unsigned i;
 214       struct pipe_vertex_buffer state;
 215
 216       memset(&state, 0, sizeof(state));
 217       state.stride = stride;
 218       state.max_index = max_index;
 219       state.buffer_offset = buffer_offset;
 220       state.buffer = buffer;
 221
 222       memcpy(&$self->vertex_buffers[index], &state, sizeof(state));
 223
 224       for(i = 0; i < PIPE_MAX_ATTRIBS; ++i)
 225          if(self->vertex_buffers[i].buffer)
 226             $self->num_vertex_buffers = i + 1;
 227
 228       $self->pipe->set_vertex_buffers($self->pipe,
 229                                       $self->num_vertex_buffers,
 230                                       $self->vertex_buffers);
 231    }
 232
 233    void set_vertex_element(unsigned index,
 234                            const struct pipe_vertex_element *element)
 235    {
 236       memcpy(&$self->vertex_elements[index], element, sizeof(*element));
 237    }
 238
 239    void set_vertex_elements(unsigned num)
 240    {
 241       $self->num_vertex_elements = num;
 242       cso_set_vertex_elements($self->cso,
 243                               $self->num_vertex_elements,
 244                               $self->vertex_elements);
 245    }
 246
 247    /*
 248     * Draw functions
 249     */
 250
 251    void draw_arrays(unsigned mode, unsigned start, unsigned count) {
 252       $self->pipe->draw_arrays($self->pipe, mode, start, count);
 253    }
 254
 255    void draw_elements( struct pipe_buffer *indexBuffer,
 256                        unsigned indexSize,
 257                        unsigned mode, unsigned start, unsigned count)
 258    {
 259       $self->pipe->draw_elements($self->pipe,
 260                                  indexBuffer,
 261                                  indexSize,
 262                                  mode, start, count);
 263    }
 264
 265    void draw_range_elements( struct pipe_buffer *indexBuffer,
 266                              unsigned indexSize, unsigned minIndex, unsigned maxIndex,
 267                              unsigned mode, unsigned start, unsigned count)
 268    {
 269       $self->pipe->draw_range_elements($self->pipe,
 270                                        indexBuffer,
 271                                        indexSize, minIndex, maxIndex,
 272                                        mode, start, count);
 273    }
 274
 275    void draw_vertices(unsigned prim,
 276                       unsigned num_verts,
 277                       unsigned num_attribs,
 278                       const float *vertices)
 279    {
 280       struct pipe_context *pipe = $self->pipe;
 281       struct pipe_screen *screen = pipe->screen;
 282       struct pipe_buffer *vbuf;
 283       float *map;
 284       unsigned size;
 285
 286       size = num_verts * num_attribs * 4 * sizeof(float);
 287
 288       vbuf = pipe_buffer_create(screen,
 289                                 32,
 290                                 PIPE_BUFFER_USAGE_VERTEX,
 291                                 size);
 292       if(!vbuf)
 293          goto error1;
 294
 295       map = pipe_buffer_map(screen, vbuf, PIPE_BUFFER_USAGE_CPU_WRITE);
 296       if (!map)
 297          goto error2;
 298       memcpy(map, vertices, size);
 299       pipe_buffer_unmap(screen, vbuf);
 300
 301       util_draw_vertex_buffer(pipe, vbuf, 0, prim, num_verts, num_attribs);
 302
 303 error2:
 304       pipe_buffer_reference(&vbuf, NULL);
 305 error1:
 306       ;
 307    }
 308
 309    void
 310    flush(unsigned flags = 0) {
 311       struct pipe_fence_handle *fence = NULL;
 312       $self->pipe->flush($self->pipe, flags | PIPE_FLUSH_RENDER_CACHE, &fence);
 313       if(fence) {
 314          /* TODO: allow asynchronous operation */
 315          $self->pipe->screen->fence_finish( $self->pipe->screen, fence, 0 );
 316          $self->pipe->screen->fence_reference( $self->pipe->screen, &fence, NULL );
 317       }
 318    }
 319
 320    /*
 321     * Surface functions
 322     */
 323
 324    void surface_copy(struct st_surface *dst,
 325                      unsigned destx, unsigned desty,
 326                      struct st_surface *src,
 327                      unsigned srcx, unsigned srcy,
 328                      unsigned width, unsigned height)
 329    {
 330       struct pipe_surface *_dst = NULL;
 331       struct pipe_surface *_src = NULL;
 332
 333       _dst = st_pipe_surface(dst, PIPE_BUFFER_USAGE_GPU_WRITE);
 334       if(!_dst)
 335          SWIG_exception(SWIG_ValueError, "couldn't acquire destination surface for writing");
 336
 337       _src = st_pipe_surface(src, PIPE_BUFFER_USAGE_GPU_READ);
 338       if(!_src)
 339          SWIG_exception(SWIG_ValueError, "couldn't acquire source surface for reading");
 340
 341       $self->pipe->surface_copy($self->pipe, _dst, destx, desty, _src, srcx, srcy, width, height);
 342
 343    fail:
 344       pipe_surface_reference(&_src, NULL);
 345       pipe_surface_reference(&_dst, NULL);
 346    }
 347
 348    void surface_fill(struct st_surface *dst,
 349                      unsigned x, unsigned y,
 350                      unsigned width, unsigned height,
 351                      unsigned value)
 352    {
 353       struct pipe_surface *_dst = NULL;
 354
 355       _dst = st_pipe_surface(dst, PIPE_BUFFER_USAGE_GPU_WRITE);
 356       if(!_dst)
 357          SWIG_exception(SWIG_ValueError, "couldn't acquire destination surface for writing");
 358
 359       $self->pipe->surface_fill($self->pipe, _dst, x, y, width, height, value);
 360
 361    fail:
 362       pipe_surface_reference(&_dst, NULL);
 363    }
 364
 365    void clear(unsigned buffers, const float *rgba, double depth = 0.0f,
 366               unsigned stencil = 0)
 367    {
 368       $self->pipe->clear($self->pipe, buffers, rgba, depth, stencil);
 369    }
 370
 371 };