src/gallium/state_trackers/python/p_context.i

   1  /**************************************************************************
   2  *
   3  * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
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   7  * copy of this software and associated documentation files (the
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  11  * permit persons to whom the Software is furnished to do so, subject to
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  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.
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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_clip(const struct pipe_clip_state *state ) {
 139       $self->pipe->set_clip_state($self->pipe, state);
 140    }
 141
 142    void set_constant_buffer(unsigned shader, unsigned index,
 143                             struct pipe_buffer *buffer )
 144    {
 145       struct pipe_constant_buffer state;
 146       memset(&state, 0, sizeof(state));
 147       state.buffer = buffer;
 148       $self->pipe->set_constant_buffer($self->pipe, shader, index, &state);
 149    }
 150
 151    void set_framebuffer(const struct pipe_framebuffer_state *state )
 152    {
 153       memcpy(&$self->framebuffer, state, sizeof *state);
 154       cso_set_framebuffer($self->cso, state);
 155    }
 156
 157    void set_polygon_stipple(const struct pipe_poly_stipple *state ) {
 158       $self->pipe->set_polygon_stipple($self->pipe, state);
 159    }
 160
 161    void set_scissor(const struct pipe_scissor_state *state ) {
 162       $self->pipe->set_scissor_state($self->pipe, state);
 163    }
 164
 165    void set_viewport(const struct pipe_viewport_state *state) {
 166       cso_set_viewport($self->cso, state);
 167    }
 168
 169    void set_fragment_sampler_texture(unsigned index,
 170                                      struct pipe_texture *texture) {
 171       if(!texture)
 172          texture = $self->default_texture;
 173       pipe_texture_reference(&$self->fragment_sampler_textures[index], texture);
 174       $self->pipe->set_fragment_sampler_textures($self->pipe,
 175                                                  PIPE_MAX_SAMPLERS,
 176                                                  $self->fragment_sampler_textures);
 177    }
 178
 179    void set_vertex_sampler_texture(unsigned index,
 180                                    struct pipe_texture *texture) {
 181       if(!texture)
 182          texture = $self->default_texture;
 183       pipe_texture_reference(&$self->vertex_sampler_textures[index], texture);
 184       $self->pipe->set_vertex_sampler_textures($self->pipe,
 185                                                PIPE_MAX_VERTEX_SAMPLERS,
 186                                                $self->vertex_sampler_textures);
 187    }
 188
 189    void set_vertex_buffer(unsigned index,
 190                           unsigned stride,
 191                           unsigned max_index,
 192                           unsigned buffer_offset,
 193                           struct pipe_buffer *buffer)
 194    {
 195       unsigned i;
 196       struct pipe_vertex_buffer state;
 197
 198       memset(&state, 0, sizeof(state));
 199       state.stride = stride;
 200       state.max_index = max_index;
 201       state.buffer_offset = buffer_offset;
 202       state.buffer = buffer;
 203
 204       memcpy(&$self->vertex_buffers[index], &state, sizeof(state));
 205
 206       for(i = 0; i < PIPE_MAX_ATTRIBS; ++i)
 207          if(self->vertex_buffers[i].buffer)
 208             $self->num_vertex_buffers = i + 1;
 209
 210       $self->pipe->set_vertex_buffers($self->pipe,
 211                                       $self->num_vertex_buffers,
 212                                       $self->vertex_buffers);
 213    }
 214
 215    void set_vertex_element(unsigned index,
 216                            const struct pipe_vertex_element *element)
 217    {
 218       memcpy(&$self->vertex_elements[index], element, sizeof(*element));
 219    }
 220
 221    void set_vertex_elements(unsigned num)
 222    {
 223       $self->num_vertex_elements = num;
 224       $self->pipe->set_vertex_elements($self->pipe,
 225                                        $self->num_vertex_elements,
 226                                        $self->vertex_elements);
 227    }
 228
 229    /*
 230     * Draw functions
 231     */
 232
 233    void draw_arrays(unsigned mode, unsigned start, unsigned count) {
 234       $self->pipe->draw_arrays($self->pipe, mode, start, count);
 235    }
 236
 237    void draw_elements( struct pipe_buffer *indexBuffer,
 238                        unsigned indexSize,
 239                        unsigned mode, unsigned start, unsigned count)
 240    {
 241       $self->pipe->draw_elements($self->pipe,
 242                                  indexBuffer,
 243                                  indexSize,
 244                                  mode, start, count);
 245    }
 246
 247    void draw_range_elements( struct pipe_buffer *indexBuffer,
 248                              unsigned indexSize, unsigned minIndex, unsigned maxIndex,
 249                              unsigned mode, unsigned start, unsigned count)
 250    {
 251       $self->pipe->draw_range_elements($self->pipe,
 252                                        indexBuffer,
 253                                        indexSize, minIndex, maxIndex,
 254                                        mode, start, count);
 255    }
 256
 257    void draw_vertices(unsigned prim,
 258                       unsigned num_verts,
 259                       unsigned num_attribs,
 260                       const float *vertices)
 261    {
 262       struct pipe_context *pipe = $self->pipe;
 263       struct pipe_screen *screen = pipe->screen;
 264       struct pipe_buffer *vbuf;
 265       float *map;
 266       unsigned size;
 267
 268       size = num_verts * num_attribs * 4 * sizeof(float);
 269
 270       vbuf = pipe_buffer_create(screen,
 271                                 32,
 272                                 PIPE_BUFFER_USAGE_VERTEX,
 273                                 size);
 274       if(!vbuf)
 275          goto error1;
 276
 277       map = pipe_buffer_map(screen, vbuf, PIPE_BUFFER_USAGE_CPU_WRITE);
 278       if (!map)
 279          goto error2;
 280       memcpy(map, vertices, size);
 281       pipe_buffer_unmap(screen, vbuf);
 282
 283       util_draw_vertex_buffer(pipe, vbuf, 0, prim, num_verts, num_attribs);
 284
 285 error2:
 286       pipe_buffer_reference(&vbuf, NULL);
 287 error1:
 288       ;
 289    }
 290
 291    void
 292    flush(unsigned flags = 0) {
 293       struct pipe_fence_handle *fence = NULL;
 294       $self->pipe->flush($self->pipe, flags | PIPE_FLUSH_RENDER_CACHE, &fence);
 295       if(fence) {
 296          /* TODO: allow asynchronous operation */
 297          $self->pipe->screen->fence_finish( $self->pipe->screen, fence, 0 );
 298          $self->pipe->screen->fence_reference( $self->pipe->screen, &fence, NULL );
 299       }
 300    }
 301
 302    /*
 303     * Surface functions
 304     */
 305
 306    void surface_copy(struct st_surface *dst,
 307                      unsigned destx, unsigned desty,
 308                      struct st_surface *src,
 309                      unsigned srcx, unsigned srcy,
 310                      unsigned width, unsigned height)
 311    {
 312       struct pipe_surface *_dst = NULL;
 313       struct pipe_surface *_src = NULL;
 314
 315       _dst = st_pipe_surface(dst, PIPE_BUFFER_USAGE_GPU_WRITE);
 316       if(!_dst)
 317          SWIG_exception(SWIG_ValueError, "couldn't acquire destination surface for writing");
 318
 319       _src = st_pipe_surface(src, PIPE_BUFFER_USAGE_GPU_READ);
 320       if(!_src)
 321          SWIG_exception(SWIG_ValueError, "couldn't acquire source surface for reading");
 322
 323       $self->pipe->surface_copy($self->pipe, _dst, destx, desty, _src, srcx, srcy, width, height);
 324
 325    fail:
 326       pipe_surface_reference(&_src, NULL);
 327       pipe_surface_reference(&_dst, NULL);
 328    }
 329
 330    void surface_fill(struct st_surface *dst,
 331                      unsigned x, unsigned y,
 332                      unsigned width, unsigned height,
 333                      unsigned value)
 334    {
 335       struct pipe_surface *_dst = NULL;
 336
 337       _dst = st_pipe_surface(dst, PIPE_BUFFER_USAGE_GPU_WRITE);
 338       if(!_dst)
 339          SWIG_exception(SWIG_ValueError, "couldn't acquire destination surface for writing");
 340
 341       $self->pipe->surface_fill($self->pipe, _dst, x, y, width, height, value);
 342
 343    fail:
 344       pipe_surface_reference(&_dst, NULL);
 345    }
 346
 347    void clear(unsigned buffers, const float *rgba, double depth = 0.0f,
 348               unsigned stencil = 0)
 349    {
 350       $self->pipe->clear($self->pipe, buffers, rgba, depth, stencil);
 351    }
 352
 353 };