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       state.size = buffer->buffer->size;
 125       $self->pipe->set_constant_buffer($self->pipe, shader, index, &state);
 126    }
 127
 128    void set_framebuffer(const struct pipe_framebuffer_state *state ) {
 129       cso_set_framebuffer($self->cso, state);
 130    }
 131
 132    void set_polygon_stipple(const struct pipe_poly_stipple *state ) {
 133       $self->pipe->set_polygon_stipple($self->pipe, state);
 134    }
 135
 136    void set_scissor(const struct pipe_scissor_state *state ) {
 137       $self->pipe->set_scissor_state($self->pipe, state);
 138    }
 139
 140    void set_viewport(const struct pipe_viewport_state *state) {
 141       cso_set_viewport($self->cso, state);
 142    }
 143
 144    void set_sampler_texture(unsigned index,
 145                             struct pipe_texture *texture) {
 146       if(!texture)
 147          texture = $self->default_texture;
 148       pipe_texture_reference(&$self->sampler_textures[index], texture);
 149       $self->pipe->set_sampler_textures($self->pipe,
 150                                         PIPE_MAX_SAMPLERS,
 151                                         $self->sampler_textures);
 152    }
 153
 154    void set_vertex_buffer(unsigned index,
 155                           unsigned pitch,
 156                           unsigned max_index,
 157                           unsigned buffer_offset,
 158                           struct st_buffer *buffer)
 159    {
 160       unsigned i;
 161       struct pipe_vertex_buffer state;
 162
 163       memset(&state, 0, sizeof(state));
 164       state.pitch = pitch;
 165       state.max_index = max_index;
 166       state.buffer_offset = buffer_offset;
 167       state.buffer = buffer ? buffer->buffer : NULL;
 168
 169       memcpy(&$self->vertex_buffers[index], &state, sizeof(state));
 170
 171       for(i = 0; i < PIPE_MAX_ATTRIBS; ++i)
 172          if(self->vertex_buffers[i].buffer)
 173             $self->num_vertex_buffers = i + 1;
 174
 175       $self->pipe->set_vertex_buffers($self->pipe,
 176                                       $self->num_vertex_buffers,
 177                                       $self->vertex_buffers);
 178    }
 179
 180    void set_vertex_element(unsigned index,
 181                            const struct pipe_vertex_element *element)
 182    {
 183       memcpy(&$self->vertex_elements[index], element, sizeof(*element));
 184    }
 185
 186    void set_vertex_elements(unsigned num)
 187    {
 188       $self->num_vertex_elements = num;
 189       $self->pipe->set_vertex_elements($self->pipe,
 190                                        $self->num_vertex_elements,
 191                                        $self->vertex_elements);
 192    }
 193
 194    /*
 195     * Draw functions
 196     */
 197
 198    void draw_arrays(unsigned mode, unsigned start, unsigned count) {
 199       $self->pipe->draw_arrays($self->pipe, mode, start, count);
 200    }
 201
 202    void draw_elements( struct st_buffer *indexBuffer,
 203                        unsigned indexSize,
 204                        unsigned mode, unsigned start, unsigned count)
 205    {
 206       $self->pipe->draw_elements($self->pipe,
 207                                  indexBuffer->buffer,
 208                                  indexSize,
 209                                  mode, start, count);
 210    }
 211
 212    void draw_range_elements( struct st_buffer *indexBuffer,
 213                              unsigned indexSize, unsigned minIndex, unsigned maxIndex,
 214                              unsigned mode, unsigned start, unsigned count)
 215    {
 216       $self->pipe->draw_range_elements($self->pipe,
 217                                        indexBuffer->buffer,
 218                                        indexSize, minIndex, maxIndex,
 219                                        mode, start, count);
 220    }
 221
 222    void draw_vertices(unsigned prim,
 223                       unsigned num_verts,
 224                       unsigned num_attribs,
 225                       const float *vertices)
 226    {
 227       struct pipe_context *pipe = $self->pipe;
 228       struct pipe_screen *screen = pipe->screen;
 229       struct pipe_buffer *vbuf;
 230       float *map;
 231       unsigned size;
 232
 233       size = num_verts * num_attribs * 4 * sizeof(float);
 234
 235       vbuf = pipe_buffer_create(screen,
 236                                 32,
 237                                 PIPE_BUFFER_USAGE_VERTEX,
 238                                 size);
 239       if(!vbuf)
 240          goto error1;
 241
 242       map = pipe_buffer_map(screen, vbuf, PIPE_BUFFER_USAGE_CPU_WRITE);
 243       if (!map)
 244          goto error2;
 245       memcpy(map, vertices, size);
 246       pipe_buffer_unmap(screen, vbuf);
 247
 248       util_draw_vertex_buffer(pipe, vbuf, 0, prim, num_verts, num_attribs);
 249
 250 error2:
 251       pipe_buffer_reference(screen, &vbuf, NULL);
 252 error1:
 253       ;
 254    }
 255
 256    void
 257    flush(unsigned flags = 0) {
 258       struct pipe_fence_handle *fence = NULL;
 259       $self->pipe->flush($self->pipe, flags | PIPE_FLUSH_RENDER_CACHE, &fence);
 260       /* TODO: allow asynchronous operation */
 261       $self->pipe->winsys->fence_finish( $self->pipe->winsys, fence, 0 );
 262       $self->pipe->winsys->fence_reference( $self->pipe->winsys, &fence, NULL );
 263    }
 264
 265    /*
 266     * Surface functions
 267     */
 268
 269    void surface_copy(int do_flip,
 270                      struct pipe_surface *dest,
 271                      unsigned destx, unsigned desty,
 272                      struct pipe_surface *src,
 273                      unsigned srcx, unsigned srcy,
 274                      unsigned width, unsigned height) {
 275       $self->pipe->surface_copy($self->pipe, do_flip, dest, destx, desty, src, srcx, srcy, width, height);
 276    }
 277
 278    void surface_fill(struct pipe_surface *dst,
 279                      unsigned x, unsigned y,
 280                      unsigned width, unsigned height,
 281                      unsigned value) {
 282       $self->pipe->surface_fill($self->pipe, dst, x, y, width, height, value);
 283    }
 284
 285    void surface_clear(struct pipe_surface *surface, unsigned value = 0) {
 286       $self->pipe->clear($self->pipe, surface, value);
 287    }
 288
 289 };