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.
  17  *
  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_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_rasterizer( const struct pipe_rasterizer_state *state ) {
  61       cso_set_rasterizer($self->cso, state);
  62    }
  63
  64    void set_depth_stencil_alpha(const struct pipe_depth_stencil_alpha_state *state) {
  65       cso_set_depth_stencil_alpha($self->cso, state);
  66    }
  67
  68    void set_fragment_shader( const struct pipe_shader_state *state ) {
  69       void *fs;
  70
  71       if(!state) {
  72          cso_set_fragment_shader_handle($self->cso, NULL);
  73          return;
  74       }
  75
  76       fs = $self->pipe->create_fs_state($self->pipe, state);
  77       if(!fs)
  78          return;
  79
  80       if(cso_set_fragment_shader_handle($self->cso, fs) != PIPE_OK)
  81          return;
  82
  83       cso_delete_fragment_shader($self->cso, $self->fs);
  84       $self->fs = fs;
  85    }
  86
  87    void set_vertex_shader( const struct pipe_shader_state *state ) {
  88       void *vs;
  89
  90       if(!state) {
  91          cso_set_vertex_shader_handle($self->cso, NULL);
  92          return;
  93       }
  94
  95       vs = $self->pipe->create_vs_state($self->pipe, state);
  96       if(!vs)
  97          return;
  98
  99       if(cso_set_vertex_shader_handle($self->cso, vs) != PIPE_OK)
 100          return;
 101
 102       cso_delete_vertex_shader($self->cso, $self->vs);
 103       $self->vs = vs;
 104    }
 105
 106    /*
 107     * Parameter-like state (or properties)
 108     */
 109
 110    void set_blend_color(const struct pipe_blend_color *state ) {
 111       cso_set_blend_color($self->cso, state);
 112    }
 113
 114    void set_clip(const struct pipe_clip_state *state ) {
 115       $self->pipe->set_clip_state($self->pipe, state);
 116    }
 117
 118    void set_constant_buffer(unsigned shader, unsigned index,
 119                             struct pipe_buffer *buffer )
 120    {
 121       $self->pipe->set_constant_buffer($self->pipe, shader, index, buffer);
 122    }
 123
 124    void set_framebuffer(const struct pipe_framebuffer_state *state )
 125    {
 126       memcpy(&$self->framebuffer, state, sizeof *state);
 127       cso_set_framebuffer($self->cso, state);
 128    }
 129
 130    void set_polygon_stipple(const struct pipe_poly_stipple *state ) {
 131       $self->pipe->set_polygon_stipple($self->pipe, state);
 132    }
 133
 134    void set_scissor(const struct pipe_scissor_state *state ) {
 135       $self->pipe->set_scissor_state($self->pipe, state);
 136    }
 137
 138    void set_viewport(const struct pipe_viewport_state *state) {
 139       cso_set_viewport($self->cso, state);
 140    }
 141
 142    void set_sampler_texture(unsigned index,
 143                             struct pipe_texture *texture) {
 144       if(!texture)
 145          texture = $self->default_texture;
 146       pipe_texture_reference(&$self->sampler_textures[index], texture);
 147       $self->pipe->set_fragment_sampler_textures($self->pipe,
 148                                                  PIPE_MAX_SAMPLERS,
 149                                                  $self->sampler_textures);
 150    }
 151
 152    void set_vertex_buffer(unsigned index,
 153                           unsigned stride,
 154                           unsigned max_index,
 155                           unsigned buffer_offset,
 156                           struct pipe_buffer *buffer)
 157    {
 158       unsigned i;
 159       struct pipe_vertex_buffer state;
 160
 161       memset(&state, 0, sizeof(state));
 162       state.stride = stride;
 163       state.max_index = max_index;
 164       state.buffer_offset = buffer_offset;
 165       state.buffer = buffer;
 166
 167       memcpy(&$self->vertex_buffers[index], &state, sizeof(state));
 168
 169       for(i = 0; i < PIPE_MAX_ATTRIBS; ++i)
 170          if(self->vertex_buffers[i].buffer)
 171             $self->num_vertex_buffers = i + 1;
 172
 173       $self->pipe->set_vertex_buffers($self->pipe,
 174                                       $self->num_vertex_buffers,
 175                                       $self->vertex_buffers);
 176    }
 177
 178    void set_vertex_element(unsigned index,
 179                            const struct pipe_vertex_element *element)
 180    {
 181       memcpy(&$self->vertex_elements[index], element, sizeof(*element));
 182    }
 183
 184    void set_vertex_elements(unsigned num)
 185    {
 186       $self->num_vertex_elements = num;
 187       $self->pipe->set_vertex_elements($self->pipe,
 188                                        $self->num_vertex_elements,
 189                                        $self->vertex_elements);
 190    }
 191
 192    /*
 193     * Draw functions
 194     */
 195
 196    void draw_arrays(unsigned mode, unsigned start, unsigned count) {
 197       $self->pipe->draw_arrays($self->pipe, mode, start, count);
 198    }
 199
 200    void draw_elements( struct pipe_buffer *indexBuffer,
 201                        unsigned indexSize,
 202                        unsigned mode, unsigned start, unsigned count)
 203    {
 204       $self->pipe->draw_elements($self->pipe,
 205                                  indexBuffer,
 206                                  indexSize,
 207                                  mode, start, count);
 208    }
 209
 210    void draw_range_elements( struct pipe_buffer *indexBuffer,
 211                              unsigned indexSize, unsigned minIndex, unsigned maxIndex,
 212                              unsigned mode, unsigned start, unsigned count)
 213    {
 214       $self->pipe->draw_range_elements($self->pipe,
 215                                        indexBuffer,
 216                                        indexSize, minIndex, maxIndex,
 217                                        mode, start, count);
 218    }
 219
 220    void draw_vertices(unsigned prim,
 221                       unsigned num_verts,
 222                       unsigned num_attribs,
 223                       const float *vertices)
 224    {
 225       struct pipe_context *pipe = $self->pipe;
 226       struct pipe_screen *screen = pipe->screen;
 227       struct pipe_buffer *vbuf;
 228       float *map;
 229       unsigned size;
 230
 231       size = num_verts * num_attribs * 4 * sizeof(float);
 232
 233       vbuf = pipe_buffer_create(screen,
 234                                 32,
 235                                 PIPE_BUFFER_USAGE_VERTEX,
 236                                 size);
 237       if(!vbuf)
 238          goto error1;
 239
 240       map = pipe_buffer_map(screen, vbuf, PIPE_BUFFER_USAGE_CPU_WRITE);
 241       if (!map)
 242          goto error2;
 243       memcpy(map, vertices, size);
 244       pipe_buffer_unmap(screen, vbuf);
 245
 246       util_draw_vertex_buffer(pipe, vbuf, 0, prim, num_verts, num_attribs);
 247
 248 error2:
 249       pipe_buffer_reference(&vbuf, NULL);
 250 error1:
 251       ;
 252    }
 253
 254    void
 255    flush(unsigned flags = 0) {
 256       struct pipe_fence_handle *fence = NULL;
 257       $self->pipe->flush($self->pipe, flags | PIPE_FLUSH_RENDER_CACHE, &fence);
 258       if(fence) {
 259          /* TODO: allow asynchronous operation */
 260          $self->pipe->screen->fence_finish( $self->pipe->screen, fence, 0 );
 261          $self->pipe->screen->fence_reference( $self->pipe->screen, &fence, NULL );
 262       }
 263    }
 264
 265    /*
 266     * Surface functions
 267     */
 268
 269    void surface_copy(struct st_surface *dst,
 270                      unsigned destx, unsigned desty,
 271                      struct st_surface *src,
 272                      unsigned srcx, unsigned srcy,
 273                      unsigned width, unsigned height)
 274    {
 275       struct pipe_surface *_dst = NULL;
 276       struct pipe_surface *_src = NULL;
 277
 278       _dst = st_pipe_surface(dst, PIPE_BUFFER_USAGE_GPU_WRITE);
 279       if(!_dst)
 280          SWIG_exception(SWIG_ValueError, "couldn't acquire destination surface for writing");
 281
 282       _src = st_pipe_surface(src, PIPE_BUFFER_USAGE_GPU_READ);
 283       if(!_src)
 284          SWIG_exception(SWIG_ValueError, "couldn't acquire source surface for reading");
 285
 286       $self->pipe->surface_copy($self->pipe, _dst, destx, desty, _src, srcx, srcy, width, height);
 287
 288    fail:
 289       pipe_surface_reference(&_src, NULL);
 290       pipe_surface_reference(&_dst, NULL);
 291    }
 292
 293    void surface_fill(struct st_surface *dst,
 294                      unsigned x, unsigned y,
 295                      unsigned width, unsigned height,
 296                      unsigned value)
 297    {
 298       struct pipe_surface *_dst = NULL;
 299
 300       _dst = st_pipe_surface(dst, PIPE_BUFFER_USAGE_GPU_WRITE);
 301       if(!_dst)
 302          SWIG_exception(SWIG_ValueError, "couldn't acquire destination surface for writing");
 303
 304       $self->pipe->surface_fill($self->pipe, _dst, x, y, width, height, value);
 305
 306    fail:
 307       pipe_surface_reference(&_dst, NULL);
 308    }
 309
 310    void clear(unsigned buffers, const float *rgba, double depth = 0.0f,
 311               unsigned stencil = 0)
 312    {
 313       $self->pipe->clear($self->pipe, buffers, rgba, depth, stencil);
 314    }
 315
 316 };