src/gallium/state_trackers/python/p_context.i

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