1 /**************************************************************************
3 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
29 #include "pipe/p_defines.h"
30 #include "util/u_simple_screen.h"
31 #include "util/u_memory.h"
32 #include "pipe/p_context.h"
34 #include "fo_context.h"
35 #include "fo_winsys.h"
39 static void failover_destroy( struct pipe_context
*pipe
)
41 struct failover_context
*failover
= failover_context( pipe
);
47 void failover_fail_over( struct failover_context
*failover
)
49 failover
->dirty
= TRUE
;
50 failover
->mode
= FO_SW
;
54 static void failover_draw_elements( struct pipe_context
*pipe
,
55 struct pipe_buffer
*indexBuffer
,
61 struct failover_context
*failover
= failover_context( pipe
);
63 /* If there has been any statechange since last time, try hardware
66 if (failover
->dirty
) {
67 failover
->mode
= FO_HW
;
72 if (failover
->mode
== FO_HW
) {
73 failover
->hw
->draw_elements( failover
->hw
,
81 /* Possibly try software:
83 if (failover
->mode
== FO_SW
) {
85 if (failover
->dirty
) {
86 failover
->hw
->flush( failover
->hw
, ~0, NULL
);
87 failover_state_emit( failover
);
90 failover
->sw
->draw_elements( failover
->sw
,
97 /* Be ready to switch back to hardware rendering without an
98 * intervening flush. Unlikely to be much performance impact to
101 failover
->sw
->flush( failover
->sw
, ~0, NULL
);
106 static void failover_draw_arrays( struct pipe_context
*pipe
,
107 unsigned prim
, unsigned start
, unsigned count
)
109 failover_draw_elements(pipe
, NULL
, 0, prim
, start
, count
);
113 failover_is_texture_referenced( struct pipe_context
*_pipe
,
114 struct pipe_texture
*texture
,
115 unsigned face
, unsigned level
)
117 struct failover_context
*failover
= failover_context( _pipe
);
118 struct pipe_context
*pipe
= (failover
->mode
== FO_HW
) ?
119 failover
->hw
: failover
->sw
;
121 return pipe
->is_texture_referenced(pipe
, texture
, face
, level
);
125 failover_is_buffer_referenced( struct pipe_context
*_pipe
,
126 struct pipe_buffer
*buf
)
128 struct failover_context
*failover
= failover_context( _pipe
);
129 struct pipe_context
*pipe
= (failover
->mode
== FO_HW
) ?
130 failover
->hw
: failover
->sw
;
132 return pipe
->is_buffer_referenced(pipe
, buf
);
135 struct pipe_context
*failover_create( struct pipe_context
*hw
,
136 struct pipe_context
*sw
)
138 struct failover_context
*failover
= CALLOC_STRUCT(failover_context
);
139 if (failover
== NULL
)
144 failover
->pipe
.winsys
= hw
->winsys
;
145 failover
->pipe
.screen
= hw
->screen
;
146 failover
->pipe
.destroy
= failover_destroy
;
148 failover
->pipe
.is_format_supported
= hw
->is_format_supported
;
149 failover
->pipe
.get_name
= hw
->get_name
;
150 failover
->pipe
.get_vendor
= hw
->get_vendor
;
151 failover
->pipe
.get_param
= hw
->get_param
;
152 failover
->pipe
.get_paramf
= hw
->get_paramf
;
155 failover
->pipe
.draw_arrays
= failover_draw_arrays
;
156 failover
->pipe
.draw_elements
= failover_draw_elements
;
157 failover
->pipe
.clear
= hw
->clear
;
159 /* No software occlusion fallback (or other optional functionality)
160 * at this point - if the hardware doesn't support it, don't
161 * advertise it to the application.
163 failover
->pipe
.begin_query
= hw
->begin_query
;
164 failover
->pipe
.end_query
= hw
->end_query
;
166 failover_init_state_functions( failover
);
168 failover
->pipe
.surface_copy
= hw
->surface_copy
;
169 failover
->pipe
.surface_fill
= hw
->surface_fill
;
172 failover
->pipe
.texture_create
= hw
->texture_create
;
173 failover
->pipe
.texture_destroy
= hw
->texture_destroy
;
174 failover
->pipe
.get_tex_surface
= hw
->get_tex_surface
;
175 failover
->pipe
.texture_update
= hw
->texture_update
;
178 failover
->pipe
.flush
= hw
->flush
;
179 failover
->pipe
.is_texture_referenced
= failover_is_texture_referenced
;
180 failover
->pipe
.is_buffer_referenced
= failover_is_buffer_referenced
;
184 return &failover
->pipe
;