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 "draw/draw_context.h"

#include "draw/draw_vbuf.h"

#include "util/u_inlines.h"

#include "pipe/p_state.h"

#include "svga_context.h"

#include "svga_screen.h"

#include "svga_swtnl.h"

#include "svga_state.h"

#include "svga_swtnl_private.h"

enum pipe_error

svga_swtnl_draw_vbo(struct svga_context *svga,

                    const struct pipe_draw_info *info)

{

   struct pipe_transfer *vb_transfer[PIPE_MAX_ATTRIBS] = { 0 };

   struct pipe_transfer *ib_transfer = NULL;

   struct pipe_transfer *cb_transfer = NULL;

   struct draw_context *draw = svga->swtnl.draw;

   unsigned i;

   const void *map;

   enum pipe_error ret;

   assert(!svga->dirty);

   assert(svga->state.sw.need_swtnl);

   assert(draw);

   /* Make sure that the need_swtnl flag does not go away */

   svga->state.sw.in_swtnl_draw = TRUE;

   ret = svga_update_state(svga, SVGA_STATE_SWTNL_DRAW);

   if (ret != PIPE_OK) {

      svga_context_flush(svga, NULL);

      ret = svga_update_state(svga, SVGA_STATE_SWTNL_DRAW);

      svga->swtnl.new_vbuf = TRUE;

      assert(ret == PIPE_OK);

   }

   /*

    * Map vertex buffers

    */

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

      if (svga->curr.vb[i].buffer) {

         map = pipe_buffer_map(&svga->pipe,

                               svga->curr.vb[i].buffer,

                               PIPE_TRANSFER_READ,

                               &vb_transfer[i]);

         draw_set_mapped_vertex_buffer(draw, i, map, ~0);

      }

   }

   /* Map index buffer, if present */

   map = NULL;

   if (info->indexed && svga->curr.ib.buffer) {

      map = pipe_buffer_map(&svga->pipe, svga->curr.ib.buffer,

                            PIPE_TRANSFER_READ,

                            &ib_transfer);

      draw_set_indexes(draw,

                       (const ubyte *) map + svga->curr.ib.offset,

                       svga->curr.ib.index_size, ~0);

   }

   if (svga->curr.cbufs[PIPE_SHADER_VERTEX].buffer) {

      map = pipe_buffer_map(&svga->pipe,

                            svga->curr.cbufs[PIPE_SHADER_VERTEX].buffer,

                            PIPE_TRANSFER_READ,

			    &cb_transfer);

      assert(map);

      draw_set_mapped_constant_buffer(

         draw, PIPE_SHADER_VERTEX, 0,

         map,

         svga->curr.cbufs[PIPE_SHADER_VERTEX].buffer->width0);

   }

   draw_vbo(draw, info);

   draw_flush(svga->swtnl.draw);

   /* Ensure the draw module didn't touch this */

   assert(i == svga->curr.num_vertex_buffers);

   /*

    * unmap vertex/index buffers

    */

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

      if (svga->curr.vb[i].buffer) {

         pipe_buffer_unmap(&svga->pipe, vb_transfer[i]);

         draw_set_mapped_vertex_buffer(draw, i, NULL, 0);

      }

   }

   if (ib_transfer) {

      pipe_buffer_unmap(&svga->pipe, ib_transfer);

      draw_set_indexes(draw, NULL, 0, 0);

   }

   if (svga->curr.cbufs[PIPE_SHADER_VERTEX].buffer) {

      pipe_buffer_unmap(&svga->pipe, cb_transfer);

   }

   /* Now safe to remove the need_swtnl flag in any update_state call */

   svga->state.sw.in_swtnl_draw = FALSE;

   svga->dirty |= SVGA_NEW_NEED_PIPELINE | SVGA_NEW_NEED_SWVFETCH;

   return ret;

}

boolean svga_init_swtnl( struct svga_context *svga )

{

   struct svga_screen *screen = svga_screen(svga->pipe.screen);

   svga->swtnl.backend = svga_vbuf_render_create(svga);

   if(!svga->swtnl.backend)

      goto fail;

   /*

    * Create drawing context and plug our rendering stage into it.

    */

   svga->swtnl.draw = draw_create(&svga->pipe);

   if (svga->swtnl.draw == NULL)

      goto fail;

   draw_set_rasterize_stage(svga->swtnl.draw,

                            draw_vbuf_stage( svga->swtnl.draw, svga->swtnl.backend ));

   draw_set_render(svga->swtnl.draw, svga->swtnl.backend);

   svga->blitter = util_blitter_create(&svga->pipe);

   if (!svga->blitter)

      goto fail;

   /* must be done before installing Draw stages */

   util_blitter_cache_all_shaders(svga->blitter);

   if (!screen->haveLineSmooth)

      draw_install_aaline_stage(svga->swtnl.draw, &svga->pipe);

   /* always install polygon stipple stage */

   draw_install_pstipple_stage(svga->swtnl.draw, &svga->pipe);

   /* enable/disable line stipple stage depending on device caps */

   draw_enable_line_stipple(svga->swtnl.draw, !screen->haveLineStipple);

   /* always install AA point stage */

   draw_install_aapoint_stage(svga->swtnl.draw, &svga->pipe);

   /* Set wide line threshold above device limit (so we'll never really use it)

    */

   draw_wide_line_threshold(svga->swtnl.draw,

                            MAX2(screen->maxLineWidth,

                                 screen->maxLineWidthAA));

   if (debug_get_bool_option("SVGA_SWTNL_FSE", FALSE))

      draw_set_driver_clipping(svga->swtnl.draw, TRUE, TRUE, TRUE, FALSE);

   return TRUE;

fail:

   if (svga->blitter)

      util_blitter_destroy(svga->blitter);

   if (svga->swtnl.backend)

      svga->swtnl.backend->destroy( svga->swtnl.backend );

   if (svga->swtnl.draw)

      draw_destroy( svga->swtnl.draw );

   return FALSE;

}

void svga_destroy_swtnl( struct svga_context *svga )

{

   draw_destroy( svga->swtnl.draw );

}