| /************************************************************************** |
| * |
| * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas. |
| * 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, sub license, 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 (including the |
| * next paragraph) 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 NON-INFRINGEMENT. |
| * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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 "pipe/p_defines.h" |
| #include "pipe/p_winsys.h" |
| #include "pipe/p_util.h" |
| #include "pipe/p_context.h" |
| |
| #include "fo_context.h" |
| #include "fo_winsys.h" |
| |
| |
| |
| static void failover_destroy( struct pipe_context *pipe ) |
| { |
| struct failover_context *failover = failover_context( pipe ); |
| |
| free( failover ); |
| } |
| |
| |
| |
| static boolean failover_draw_elements( struct pipe_context *pipe, |
| struct pipe_buffer_handle *indexBuffer, |
| unsigned indexSize, |
| unsigned prim, unsigned start, unsigned count) |
| { |
| struct failover_context *failover = failover_context( pipe ); |
| |
| /* If there has been any statechange since last time, try hardware |
| * rendering again: |
| */ |
| if (failover->dirty) { |
| failover->mode = FO_HW; |
| } |
| |
| /* Try hardware: |
| */ |
| if (failover->mode == FO_HW) { |
| if (!failover->hw->draw_elements( failover->hw, |
| indexBuffer, |
| indexSize, |
| prim, |
| start, |
| count )) { |
| |
| failover->hw->flush( failover->hw, ~0 ); |
| failover->mode = FO_SW; |
| } |
| } |
| |
| /* Possibly try software: |
| */ |
| if (failover->mode == FO_SW) { |
| |
| if (failover->dirty) |
| failover_state_emit( failover ); |
| |
| failover->sw->draw_elements( failover->sw, |
| indexBuffer, |
| indexSize, |
| prim, |
| start, |
| count ); |
| |
| /* Be ready to switch back to hardware rendering without an |
| * intervening flush. Unlikely to be much performance impact to |
| * this: |
| */ |
| failover->sw->flush( failover->sw, ~0 ); |
| } |
| |
| return TRUE; |
| } |
| |
| |
| static boolean failover_draw_arrays( struct pipe_context *pipe, |
| unsigned prim, unsigned start, unsigned count) |
| { |
| return failover_draw_elements(pipe, NULL, 0, prim, start, count); |
| } |
| |
| |
| |
| struct pipe_context *failover_create( struct pipe_context *hw, |
| struct pipe_context *sw ) |
| { |
| struct failover_context *failover = CALLOC_STRUCT(failover_context); |
| if (failover == NULL) |
| return NULL; |
| |
| failover->pipe.winsys = hw->winsys; |
| failover->pipe.destroy = failover_destroy; |
| failover->pipe.is_format_supported = hw->is_format_supported; |
| failover->pipe.get_name = hw->get_name; |
| failover->pipe.get_vendor = hw->get_vendor; |
| failover->pipe.get_param = hw->get_param; |
| |
| failover->pipe.draw_arrays = failover_draw_arrays; |
| failover->pipe.draw_elements = failover_draw_elements; |
| failover->pipe.clear = hw->clear; |
| |
| /* No software occlusion fallback (or other optional functionality) |
| * at this point - if the hardware doesn't support it, don't |
| * advertise it to the application. |
| */ |
| failover->pipe.begin_query = hw->begin_query; |
| failover->pipe.end_query = hw->end_query; |
| |
| failover_init_state_functions( failover ); |
| |
| #if 0 |
| failover->pipe.surface_alloc = hw->surface_alloc; |
| #endif |
| failover->pipe.get_tex_surface = hw->get_tex_surface; |
| |
| failover->pipe.region_map = hw->region_map; |
| failover->pipe.region_unmap = hw->region_unmap; |
| failover->pipe.region_data = hw->region_data; |
| failover->pipe.region_copy = hw->region_copy; |
| failover->pipe.region_fill = hw->region_fill; |
| failover->pipe.mipmap_tree_layout = hw->mipmap_tree_layout; |
| failover->pipe.flush = hw->flush; |
| |
| failover->dirty = 0; |
| |
| return &failover->pipe; |
| } |
| |