Subversion Repositories Kolibri OS

/**********************************************************

 * Copyright 2008-2009 VMware, Inc.  All rights reserved.

 *

 * Permission is hereby granted, free of charge, to any person

 * obtaining a copy of this software and associated documentation

 * files (the "Software"), to deal in the Software without

 * restriction, including without limitation the rights to use, copy,

 * modify, merge, publish, distribute, sublicense, and/or sell copies

 * of the Software, and to permit persons to whom the Software is

 * furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be

 * included in all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS

 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN

 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE

 * SOFTWARE.

 *

 **********************************************************/

#include "util/u_helpers.h"

#include "util/u_inlines.h"

#include "pipe/p_defines.h"

#include "util/u_math.h"

#include "util/u_memory.h"

#include "util/u_transfer.h"

#include "tgsi/tgsi_parse.h"

#include "svga_screen.h"

#include "svga_resource_buffer.h"

#include "svga_context.h"

static void svga_set_vertex_buffers(struct pipe_context *pipe,

                                    unsigned start_slot, unsigned count,

                                    const struct pipe_vertex_buffer *buffers)

{

   struct svga_context *svga = svga_context(pipe);

   util_set_vertex_buffers_count(svga->curr.vb,

                                 &svga->curr.num_vertex_buffers,

                                 buffers, start_slot, count);

   svga->dirty |= SVGA_NEW_VBUFFER;

}

static void svga_set_index_buffer(struct pipe_context *pipe,

                                  const struct pipe_index_buffer *ib)

{

   struct svga_context *svga = svga_context(pipe);

   if (ib) {

      pipe_resource_reference(&svga->curr.ib.buffer, ib->buffer);

      memcpy(&svga->curr.ib, ib, sizeof(svga->curr.ib));

   }

   else {

      pipe_resource_reference(&svga->curr.ib.buffer, NULL);

      memset(&svga->curr.ib, 0, sizeof(svga->curr.ib));

   }

   /* TODO make this more like a state */

}

static void *

svga_create_vertex_elements_state(struct pipe_context *pipe,

                                  unsigned count,

                                  const struct pipe_vertex_element *attribs)

{

   struct svga_velems_state *velems;

   assert(count <= PIPE_MAX_ATTRIBS);

   velems = (struct svga_velems_state *) MALLOC(sizeof(struct svga_velems_state));

   if (velems) {

      velems->count = count;

      memcpy(velems->velem, attribs, sizeof(*attribs) * count);

   }

   return velems;

}

static void svga_bind_vertex_elements_state(struct pipe_context *pipe,

                                            void *velems)

{

   struct svga_context *svga = svga_context(pipe);

   struct svga_velems_state *svga_velems = (struct svga_velems_state *) velems;

   svga->curr.velems = svga_velems;

   svga->dirty |= SVGA_NEW_VELEMENT;

}

static void svga_delete_vertex_elements_state(struct pipe_context *pipe,

                                              void *velems)

{

   FREE(velems);

}

void svga_cleanup_vertex_state( struct svga_context *svga )

{

   unsigned i;

   for (i = 0 ; i < svga->curr.num_vertex_buffers; i++)

      pipe_resource_reference(&svga->curr.vb[i].buffer, NULL);

}

void svga_init_vertex_functions( struct svga_context *svga )

{

   svga->pipe.set_vertex_buffers = svga_set_vertex_buffers;

   svga->pipe.set_index_buffer = svga_set_index_buffer;

   svga->pipe.create_vertex_elements_state = svga_create_vertex_elements_state;

   svga->pipe.bind_vertex_elements_state = svga_bind_vertex_elements_state;

   svga->pipe.delete_vertex_elements_state = svga_delete_vertex_elements_state;

}