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       fs = $self->pipe->create_fs_state($self->pipe, state);
  72       if(!fs)
  73          return;
  74
  75       if(cso_set_fragment_shader_handle($self->cso, fs) != PIPE_OK)
  76          return;
  77
  78       cso_delete_fragment_shader($self->cso, $self->fs);
  79       $self->fs = fs;
  80    }
  81
  82    void set_vertex_shader( const struct pipe_shader_state *state ) {
  83       void *vs;
  84
  85       vs = $self->pipe->create_vs_state($self->pipe, state);
  86       if(!vs)
  87          return;
  88
  89       if(cso_set_vertex_shader_handle($self->cso, vs) != PIPE_OK)
  90          return;
  91
  92       cso_delete_vertex_shader($self->cso, $self->vs);
  93       $self->vs = vs;
  94    }
  95
  96    /*
  97     * Parameter-like state (or properties)
  98     */
  99
 100    void set_blend_color(const struct pipe_blend_color *state ) {
 101       cso_set_blend_color($self->cso, state);
 102    }
 103
 104    void set_clip(const struct pipe_clip_state *state ) {
 105       $self->pipe->set_clip_state($self->pipe, state);
 106    }
 107
 108    void set_constant_buffer(unsigned shader, unsigned index,
 109                             struct st_buffer *buffer )
 110    {
 111       struct pipe_constant_buffer state;
 112       memset(&state, 0, sizeof(state));
 113       state.buffer = buffer ? buffer->buffer : NULL;
 114       state.size = buffer->buffer->size;
 115       $self->pipe->set_constant_buffer($self->pipe, shader, index, &state);
 116    }
 117
 118    void set_framebuffer(const struct pipe_framebuffer_state *state ) {
 119       cso_set_framebuffer($self->cso, state);
 120    }
 121
 122    void set_polygon_stipple(const struct pipe_poly_stipple *state ) {
 123       $self->pipe->set_polygon_stipple($self->pipe, state);
 124    }
 125
 126    void set_scissor(const struct pipe_scissor_state *state ) {
 127       $self->pipe->set_scissor_state($self->pipe, state);
 128    }
 129
 130    void set_viewport(const struct pipe_viewport_state *state) {
 131       cso_set_viewport($self->cso, state);
 132    }
 133
 134    void set_sampler_texture(unsigned index,
 135                             struct pipe_texture *texture) {
 136       if(!texture)
 137          texture = $self->default_texture;
 138       pipe_texture_reference(&$self->sampler_textures[index], texture);
 139       $self->pipe->set_sampler_textures($self->pipe,
 140                                         PIPE_MAX_SAMPLERS,
 141                                         $self->sampler_textures);
 142    }
 143
 144    void set_vertex_buffer(unsigned index,
 145                           unsigned pitch,
 146                           unsigned max_index,
 147                           unsigned buffer_offset,
 148                           struct st_buffer *buffer)
 149    {
 150       unsigned i, num_vertex_buffers;
 151       struct pipe_vertex_buffer state;
 152
 153       memset(&state, 0, sizeof(state));
 154       state.pitch = pitch;
 155       state.max_index = max_index;
 156       state.buffer_offset = buffer_offset;
 157       state.buffer = buffer ? buffer->buffer : NULL;
 158
 159       memcpy(&$self->vertex_buffers[index], &state, sizeof(state));
 160
 161       for(i = 0; i < PIPE_MAX_ATTRIBS; ++i)
 162          if(self->vertex_buffers[i].buffer)
 163             $self->num_vertex_buffers = i + 1;
 164
 165       $self->pipe->set_vertex_buffers($self->pipe,
 166                                       $self->num_vertex_buffers,
 167                                       $self->vertex_buffers);
 168    }
 169
 170    void set_vertex_element(unsigned index,
 171                            const struct pipe_vertex_element *element)
 172    {
 173       memcpy(&$self->vertex_elements[index], element, sizeof(*element));
 174    }
 175
 176    void set_vertex_elements(unsigned num)
 177    {
 178       $self->num_vertex_elements = num;
 179       $self->pipe->set_vertex_elements($self->pipe,
 180                                        $self->num_vertex_elements,
 181                                        $self->vertex_elements);
 182    }
 183
 184    /*
 185     * Draw functions
 186     */
 187
 188    void draw_arrays(unsigned mode, unsigned start, unsigned count) {
 189       $self->pipe->draw_arrays($self->pipe, mode, start, count);
 190    }
 191
 192    void draw_elements( struct st_buffer *indexBuffer,
 193                        unsigned indexSize,
 194                        unsigned mode, unsigned start, unsigned count)
 195    {
 196       $self->pipe->draw_elements($self->pipe,
 197                                  indexBuffer->buffer,
 198                                  indexSize,
 199                                  mode, start, count);
 200    }
 201
 202    void draw_vertices(unsigned prim,
 203                       unsigned num_verts,
 204                       unsigned num_attribs,
 205                       const float *vertices)
 206    {
 207       struct pipe_context *pipe = $self->pipe;
 208       struct pipe_winsys *winsys = pipe->winsys;
 209       struct pipe_buffer *vbuf;
 210       float *map;
 211       unsigned size;
 212
 213       size = num_verts * num_attribs * 4 * sizeof(float);
 214
 215       vbuf = winsys->buffer_create(winsys,
 216                                    32,
 217                                    PIPE_BUFFER_USAGE_VERTEX,
 218                                    size);
 219       if(!vbuf)
 220          goto error1;
 221
 222       map = winsys->buffer_map(winsys, vbuf, PIPE_BUFFER_USAGE_CPU_WRITE);
 223       if (!map)
 224          goto error2;
 225       memcpy(map, vertices, size);
 226       pipe->winsys->buffer_unmap(pipe->winsys, vbuf);
 227
 228       util_draw_vertex_buffer(pipe, vbuf, prim, num_verts, num_attribs);
 229
 230 error2:
 231       pipe_buffer_reference(pipe->winsys, &vbuf, NULL);
 232 error1:
 233       ;
 234    }
 235
 236    void
 237    flush(unsigned flags = 0) {
 238       struct pipe_fence_handle *fence = NULL;
 239       $self->pipe->flush($self->pipe, flags | PIPE_FLUSH_RENDER_CACHE, &fence);
 240       /* TODO: allow asynchronous operation */
 241       $self->pipe->winsys->fence_finish( $self->pipe->winsys, fence, 0 );
 242       $self->pipe->winsys->fence_reference( $self->pipe->winsys, &fence, NULL );
 243    }
 244
 245    /*
 246     * Surface functions
 247     */
 248
 249    void surface_copy(int do_flip,
 250                      struct pipe_surface *dest,
 251                      unsigned destx, unsigned desty,
 252                      struct pipe_surface *src,
 253                      unsigned srcx, unsigned srcy,
 254                      unsigned width, unsigned height) {
 255       $self->pipe->surface_copy($self->pipe, do_flip, dest, destx, desty, src, srcx, srcy, width, height);
 256    }
 257
 258    void surface_fill(struct pipe_surface *dst,
 259                      unsigned x, unsigned y,
 260                      unsigned width, unsigned height,
 261                      unsigned value) {
 262       $self->pipe->surface_fill($self->pipe, dst, x, y, width, height, value);
 263    }
 264
 265    void surface_clear(struct pipe_surface *surface, unsigned value = 0) {
 266       $self->pipe->clear($self->pipe, surface, value);
 267    }
 268
 269 };