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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  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_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       struct pipe_constant_buffer state;
 122       memset(&state, 0, sizeof(state));
 123       state.buffer = buffer;
 124       $self->pipe->set_constant_buffer($self->pipe, shader, index, &state);
 125    }
 126
 127    void set_framebuffer(const struct pipe_framebuffer_state *state )
 128    {
 129       memcpy(&$self->framebuffer, state, sizeof *state);
 130       cso_set_framebuffer($self->cso, state);
 131    }
 132
 133    void set_polygon_stipple(const struct pipe_poly_stipple *state ) {
 134       $self->pipe->set_polygon_stipple($self->pipe, state);
 135    }
 136
 137    void set_scissor(const struct pipe_scissor_state *state ) {
 138       $self->pipe->set_scissor_state($self->pipe, state);
 139    }
 140
 141    void set_viewport(const struct pipe_viewport_state *state) {
 142       cso_set_viewport($self->cso, state);
 143    }
 144
 145    void set_sampler_texture(unsigned index,
 146                             struct pipe_texture *texture) {
 147       if(!texture)
 148          texture = $self->default_texture;
 149       pipe_texture_reference(&$self->sampler_textures[index], texture);
 150       $self->pipe->set_fragment_sampler_textures($self->pipe,
 151                                                  PIPE_MAX_SAMPLERS,
 152                                                  $self->sampler_textures);
 153    }
 154
 155    void set_vertex_buffer(unsigned index,
 156                           unsigned stride,
 157                           unsigned max_index,
 158                           unsigned buffer_offset,
 159                           struct pipe_buffer *buffer)
 160    {
 161       unsigned i;
 162       struct pipe_vertex_buffer state;
 163
 164       memset(&state, 0, sizeof(state));
 165       state.stride = stride;
 166       state.max_index = max_index;
 167       state.buffer_offset = buffer_offset;
 168       state.buffer = buffer;
 169
 170       memcpy(&$self->vertex_buffers[index], &state, sizeof(state));
 171
 172       for(i = 0; i < PIPE_MAX_ATTRIBS; ++i)
 173          if(self->vertex_buffers[i].buffer)
 174             $self->num_vertex_buffers = i + 1;
 175
 176       $self->pipe->set_vertex_buffers($self->pipe,
 177                                       $self->num_vertex_buffers,
 178                                       $self->vertex_buffers);
 179    }
 180
 181    void set_vertex_element(unsigned index,
 182                            const struct pipe_vertex_element *element)
 183    {
 184       memcpy(&$self->vertex_elements[index], element, sizeof(*element));
 185    }
 186
 187    void set_vertex_elements(unsigned num)
 188    {
 189       $self->num_vertex_elements = num;
 190       $self->pipe->set_vertex_elements($self->pipe,
 191                                        $self->num_vertex_elements,
 192                                        $self->vertex_elements);
 193    }
 194
 195    /*
 196     * Draw functions
 197     */
 198
 199    void draw_arrays(unsigned mode, unsigned start, unsigned count) {
 200       $self->pipe->draw_arrays($self->pipe, mode, start, count);
 201    }
 202
 203    void draw_elements( struct pipe_buffer *indexBuffer,
 204                        unsigned indexSize,
 205                        unsigned mode, unsigned start, unsigned count)
 206    {
 207       $self->pipe->draw_elements($self->pipe,
 208                                  indexBuffer,
 209                                  indexSize,
 210                                  mode, start, count);
 211    }
 212
 213    void draw_range_elements( struct pipe_buffer *indexBuffer,
 214                              unsigned indexSize, unsigned minIndex, unsigned maxIndex,
 215                              unsigned mode, unsigned start, unsigned count)
 216    {
 217       $self->pipe->draw_range_elements($self->pipe,
 218                                        indexBuffer,
 219                                        indexSize, minIndex, maxIndex,
 220                                        mode, start, count);
 221    }
 222
 223    void draw_vertices(unsigned prim,
 224                       unsigned num_verts,
 225                       unsigned num_attribs,
 226                       const float *vertices)
 227    {
 228       struct pipe_context *pipe = $self->pipe;
 229       struct pipe_screen *screen = pipe->screen;
 230       struct pipe_buffer *vbuf;
 231       float *map;
 232       unsigned size;
 233
 234       size = num_verts * num_attribs * 4 * sizeof(float);
 235
 236       vbuf = pipe_buffer_create(screen,
 237                                 32,
 238                                 PIPE_BUFFER_USAGE_VERTEX,
 239                                 size);
 240       if(!vbuf)
 241          goto error1;
 242
 243       map = pipe_buffer_map(screen, vbuf, PIPE_BUFFER_USAGE_CPU_WRITE);
 244       if (!map)
 245          goto error2;
 246       memcpy(map, vertices, size);
 247       pipe_buffer_unmap(screen, vbuf);
 248
 249       util_draw_vertex_buffer(pipe, vbuf, 0, prim, num_verts, num_attribs);
 250
 251 error2:
 252       pipe_buffer_reference(&vbuf, NULL);
 253 error1:
 254       ;
 255    }
 256
 257    void
 258    flush(unsigned flags = 0) {
 259       struct pipe_fence_handle *fence = NULL;
 260       $self->pipe->flush($self->pipe, flags | PIPE_FLUSH_RENDER_CACHE, &fence);
 261       if(fence) {
 262          /* TODO: allow asynchronous operation */
 263          $self->pipe->screen->fence_finish( $self->pipe->screen, fence, 0 );
 264          $self->pipe->screen->fence_reference( $self->pipe->screen, &fence, NULL );
 265       }
 266    }
 267
 268    /*
 269     * Surface functions
 270     */
 271
 272    void surface_copy(struct st_surface *dst,
 273                      unsigned destx, unsigned desty,
 274                      struct st_surface *src,
 275                      unsigned srcx, unsigned srcy,
 276                      unsigned width, unsigned height)
 277    {
 278       struct pipe_surface *_dst = NULL;
 279       struct pipe_surface *_src = NULL;
 280
 281       _dst = st_pipe_surface(dst, PIPE_BUFFER_USAGE_GPU_WRITE);
 282       if(!_dst)
 283          SWIG_exception(SWIG_ValueError, "couldn't acquire destination surface for writing");
 284
 285       _src = st_pipe_surface(src, PIPE_BUFFER_USAGE_GPU_READ);
 286       if(!_src)
 287          SWIG_exception(SWIG_ValueError, "couldn't acquire source surface for reading");
 288
 289       $self->pipe->surface_copy($self->pipe, _dst, destx, desty, _src, srcx, srcy, width, height);
 290
 291    fail:
 292       pipe_surface_reference(&_src, NULL);
 293       pipe_surface_reference(&_dst, NULL);
 294    }
 295
 296    void surface_fill(struct st_surface *dst,
 297                      unsigned x, unsigned y,
 298                      unsigned width, unsigned height,
 299                      unsigned value)
 300    {
 301       struct pipe_surface *_dst = NULL;
 302
 303       _dst = st_pipe_surface(dst, PIPE_BUFFER_USAGE_GPU_WRITE);
 304       if(!_dst)
 305          SWIG_exception(SWIG_ValueError, "couldn't acquire destination surface for writing");
 306
 307       $self->pipe->surface_fill($self->pipe, _dst, x, y, width, height, value);
 308
 309    fail:
 310       pipe_surface_reference(&_dst, NULL);
 311    }
 312
 313    void clear(unsigned buffers, const float *rgba, double depth = 0.0f,
 314               unsigned stencil = 0)
 315    {
 316       $self->pipe->clear($self->pipe, buffers, rgba, depth, stencil);
 317    }
 318
 319 };