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 st_buffer *buffer )
 120    {
 121       struct pipe_constant_buffer state;
 122       memset(&state, 0, sizeof(state));
 123       state.buffer = buffer ? buffer->buffer : NULL;
 124       $self->pipe->set_constant_buffer($self->pipe, shader, index, &state);
 125    }
 126
 127    void set_framebuffer(const struct pipe_framebuffer_state *state ) {
 128       cso_set_framebuffer($self->cso, state);
 129    }
 130
 131    void set_polygon_stipple(const struct pipe_poly_stipple *state ) {
 132       $self->pipe->set_polygon_stipple($self->pipe, state);
 133    }
 134
 135    void set_scissor(const struct pipe_scissor_state *state ) {
 136       $self->pipe->set_scissor_state($self->pipe, state);
 137    }
 138
 139    void set_viewport(const struct pipe_viewport_state *state) {
 140       cso_set_viewport($self->cso, state);
 141    }
 142
 143    void set_sampler_texture(unsigned index,
 144                             struct pipe_texture *texture) {
 145       if(!texture)
 146          texture = $self->default_texture;
 147       pipe_texture_reference(&$self->sampler_textures[index], texture);
 148       $self->pipe->set_sampler_textures($self->pipe,
 149                                         PIPE_MAX_SAMPLERS,
 150                                         $self->sampler_textures);
 151    }
 152
 153    void set_vertex_buffer(unsigned index,
 154                           unsigned stride,
 155                           unsigned max_index,
 156                           unsigned buffer_offset,
 157                           struct st_buffer *buffer)
 158    {
 159       unsigned i;
 160       struct pipe_vertex_buffer state;
 161
 162       memset(&state, 0, sizeof(state));
 163       state.stride = stride;
 164       state.max_index = max_index;
 165       state.buffer_offset = buffer_offset;
 166       state.buffer = buffer ? buffer->buffer : NULL;
 167
 168       memcpy(&$self->vertex_buffers[index], &state, sizeof(state));
 169
 170       for(i = 0; i < PIPE_MAX_ATTRIBS; ++i)
 171          if(self->vertex_buffers[i].buffer)
 172             $self->num_vertex_buffers = i + 1;
 173
 174       $self->pipe->set_vertex_buffers($self->pipe,
 175                                       $self->num_vertex_buffers,
 176                                       $self->vertex_buffers);
 177    }
 178
 179    void set_vertex_element(unsigned index,
 180                            const struct pipe_vertex_element *element)
 181    {
 182       memcpy(&$self->vertex_elements[index], element, sizeof(*element));
 183    }
 184
 185    void set_vertex_elements(unsigned num)
 186    {
 187       $self->num_vertex_elements = num;
 188       $self->pipe->set_vertex_elements($self->pipe,
 189                                        $self->num_vertex_elements,
 190                                        $self->vertex_elements);
 191    }
 192
 193    /*
 194     * Draw functions
 195     */
 196
 197    void draw_arrays(unsigned mode, unsigned start, unsigned count) {
 198       $self->pipe->draw_arrays($self->pipe, mode, start, count);
 199    }
 200
 201    void draw_elements( struct st_buffer *indexBuffer,
 202                        unsigned indexSize,
 203                        unsigned mode, unsigned start, unsigned count)
 204    {
 205       $self->pipe->draw_elements($self->pipe,
 206                                  indexBuffer->buffer,
 207                                  indexSize,
 208                                  mode, start, count);
 209    }
 210
 211    void draw_range_elements( struct st_buffer *indexBuffer,
 212                              unsigned indexSize, unsigned minIndex, unsigned maxIndex,
 213                              unsigned mode, unsigned start, unsigned count)
 214    {
 215       $self->pipe->draw_range_elements($self->pipe,
 216                                        indexBuffer->buffer,
 217                                        indexSize, minIndex, maxIndex,
 218                                        mode, start, count);
 219    }
 220
 221    void draw_vertices(unsigned prim,
 222                       unsigned num_verts,
 223                       unsigned num_attribs,
 224                       const float *vertices)
 225    {
 226       struct pipe_context *pipe = $self->pipe;
 227       struct pipe_screen *screen = pipe->screen;
 228       struct pipe_buffer *vbuf;
 229       float *map;
 230       unsigned size;
 231
 232       size = num_verts * num_attribs * 4 * sizeof(float);
 233
 234       vbuf = pipe_buffer_create(screen,
 235                                 32,
 236                                 PIPE_BUFFER_USAGE_VERTEX,
 237                                 size);
 238       if(!vbuf)
 239          goto error1;
 240
 241       map = pipe_buffer_map(screen, vbuf, PIPE_BUFFER_USAGE_CPU_WRITE);
 242       if (!map)
 243          goto error2;
 244       memcpy(map, vertices, size);
 245       pipe_buffer_unmap(screen, vbuf);
 246
 247       util_draw_vertex_buffer(pipe, vbuf, 0, prim, num_verts, num_attribs);
 248
 249 error2:
 250       pipe_buffer_reference(&vbuf, NULL);
 251 error1:
 252       ;
 253    }
 254
 255    void
 256    flush(unsigned flags = 0) {
 257       struct pipe_fence_handle *fence = NULL;
 258       $self->pipe->flush($self->pipe, flags | PIPE_FLUSH_RENDER_CACHE, &fence);
 259       /* TODO: allow asynchronous operation */
 260       $self->pipe->winsys->fence_finish( $self->pipe->winsys, fence, 0 );
 261       $self->pipe->winsys->fence_reference( $self->pipe->winsys, &fence, NULL );
 262    }
 263
 264    /*
 265     * Surface functions
 266     */
 267
 268    void surface_copy(struct pipe_surface *dest,
 269                      unsigned destx, unsigned desty,
 270                      struct pipe_surface *src,
 271                      unsigned srcx, unsigned srcy,
 272                      unsigned width, unsigned height) {
 273       $self->pipe->surface_copy($self->pipe, dest, destx, desty, src, srcx, srcy, width, height);
 274    }
 275
 276    void surface_fill(struct pipe_surface *dst,
 277                      unsigned x, unsigned y,
 278                      unsigned width, unsigned height,
 279                      unsigned value) {
 280       $self->pipe->surface_fill($self->pipe, dst, x, y, width, height, value);
 281    }
 282
 283    void surface_clear(struct pipe_surface *surface, unsigned value = 0) {
 284       $self->pipe->clear($self->pipe, surface, value);
 285    }
 286
 287 };