1 /**********************************************************
2 * Copyright 2008-2009 VMware, Inc. All rights reserved.
4 * Permission is hereby granted, free of charge, to any person
5 * obtaining a copy of this software and associated documentation
6 * files (the "Software"), to deal in the Software without
7 * restriction, including without limitation the rights to use, copy,
8 * modify, merge, publish, distribute, sublicense, and/or sell copies
9 * of the Software, and to permit persons to whom the Software is
10 * furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
19 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
20 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
24 **********************************************************/
27 #include "util/u_format.h"
28 #include "util/u_inlines.h"
29 #include "util/u_prim.h"
30 #include "util/u_prim_restart.h"
31 #include "util/u_time.h"
32 #include "util/u_upload_mgr.h"
33 #include "indices/u_indices.h"
35 #include "svga_hw_reg.h"
37 #include "svga_context.h"
38 #include "svga_screen.h"
39 #include "svga_draw.h"
40 #include "svga_shader.h"
41 #include "svga_state.h"
42 #include "svga_swtnl.h"
43 #include "svga_debug.h"
44 #include "svga_resource_buffer.h"
46 static enum pipe_error
47 retry_draw_range_elements( struct svga_context
*svga
,
48 struct pipe_resource
*index_buffer
,
53 enum pipe_prim_type prim
,
56 unsigned start_instance
,
57 unsigned instance_count
,
60 enum pipe_error ret
= PIPE_OK
;
62 svga_hwtnl_set_fillmode(svga
->hwtnl
, svga
->curr
.rast
->hw_fillmode
);
64 ret
= svga_update_state( svga
, SVGA_STATE_HW_DRAW
);
68 /** determine if flatshade is to be used after svga_update_state()
69 * in case the fragment shader is changed.
71 svga_hwtnl_set_flatshade(svga
->hwtnl
,
72 svga
->curr
.rast
->templ
.flatshade
||
73 svga
->state
.hw_draw
.fs
->uses_flat_interp
,
74 svga
->curr
.rast
->templ
.flatshade_first
);
76 ret
= svga_hwtnl_draw_range_elements( svga
->hwtnl
,
77 index_buffer
, index_size
, index_bias
,
80 start_instance
, instance_count
);
87 svga_context_flush( svga
, NULL
);
91 return retry_draw_range_elements( svga
,
92 index_buffer
, index_size
, index_bias
,
95 start_instance
, instance_count
, FALSE
);
102 static enum pipe_error
103 retry_draw_arrays( struct svga_context
*svga
,
104 enum pipe_prim_type prim
, unsigned start
, unsigned count
,
105 unsigned start_instance
, unsigned instance_count
,
110 svga_hwtnl_set_fillmode(svga
->hwtnl
, svga
->curr
.rast
->hw_fillmode
);
112 ret
= svga_update_state( svga
, SVGA_STATE_HW_DRAW
);
116 /** determine if flatshade is to be used after svga_update_state()
117 * in case the fragment shader is changed.
119 svga_hwtnl_set_flatshade(svga
->hwtnl
,
120 svga
->curr
.rast
->templ
.flatshade
||
121 svga
->state
.hw_draw
.fs
->uses_flat_interp
,
122 svga
->curr
.rast
->templ
.flatshade_first
);
124 ret
= svga_hwtnl_draw_arrays(svga
->hwtnl
, prim
, start
, count
,
125 start_instance
, instance_count
);
132 if (ret
== PIPE_ERROR_OUT_OF_MEMORY
&& do_retry
)
134 svga_context_flush( svga
, NULL
);
136 return retry_draw_arrays(svga
, prim
, start
, count
,
137 start_instance
, instance_count
,
146 * Determine if we need to implement primitive restart with a fallback
147 * path which breaks the original primitive into sub-primitive at the
151 need_fallback_prim_restart(const struct svga_context
*svga
,
152 const struct pipe_draw_info
*info
)
154 if (info
->primitive_restart
&& info
->indexed
) {
155 if (!svga_have_vgpu10(svga
))
157 else if (!svga
->state
.sw
.need_swtnl
) {
158 if (svga
->curr
.ib
.index_size
== 1)
159 return TRUE
; /* no device support for 1-byte indexes */
160 else if (svga
->curr
.ib
.index_size
== 2)
161 return info
->restart_index
!= 0xffff;
163 return info
->restart_index
!= 0xffffffff;
172 svga_draw_vbo(struct pipe_context
*pipe
, const struct pipe_draw_info
*info
)
174 struct svga_context
*svga
= svga_context( pipe
);
175 unsigned reduced_prim
= u_reduced_prim( info
->mode
);
176 unsigned count
= info
->count
;
177 enum pipe_error ret
= 0;
178 boolean needed_swtnl
;
180 svga
->hud
.num_draw_calls
++; /* for SVGA_QUERY_NUM_DRAW_CALLS */
182 if (u_reduced_prim(info
->mode
) == PIPE_PRIM_TRIANGLES
&&
183 svga
->curr
.rast
->templ
.cull_face
== PIPE_FACE_FRONT_AND_BACK
)
187 * Mark currently bound target surfaces as dirty
188 * doesn't really matter if it is done before drawing.
190 * TODO If we ever normaly return something other then
191 * true we should not mark it as dirty then.
193 svga_mark_surfaces_dirty(svga_context(pipe
));
195 if (svga
->curr
.reduced_prim
!= reduced_prim
) {
196 svga
->curr
.reduced_prim
= reduced_prim
;
197 svga
->dirty
|= SVGA_NEW_REDUCED_PRIMITIVE
;
200 if (need_fallback_prim_restart(svga
, info
)) {
202 r
= util_draw_vbo_without_prim_restart(pipe
, &svga
->curr
.ib
, info
);
203 assert(r
== PIPE_OK
);
208 if (!u_trim_pipe_prim( info
->mode
, &count
))
211 needed_swtnl
= svga
->state
.sw
.need_swtnl
;
213 svga_update_state_retry( svga
, SVGA_STATE_NEED_SWTNL
);
216 if (svga
->curr
.vs
->base
.id
== svga
->debug
.disable_shader
||
217 svga
->curr
.fs
->base
.id
== svga
->debug
.disable_shader
)
221 if (svga
->state
.sw
.need_swtnl
) {
222 svga
->hud
.num_fallbacks
++; /* for SVGA_QUERY_NUM_FALLBACKS */
225 * We're switching from HW to SW TNL. SW TNL will require mapping all
226 * currently bound vertex buffers, some of which may already be
227 * referenced in the current command buffer as result of previous HW
228 * TNL. So flush now, to prevent the context to flush while a referred
229 * vertex buffer is mapped.
232 svga_context_flush(svga
, NULL
);
235 /* Avoid leaking the previous hwtnl bias to swtnl */
236 svga_hwtnl_set_index_bias( svga
->hwtnl
, 0 );
237 ret
= svga_swtnl_draw_vbo( svga
, info
);
240 if (info
->indexed
&& svga
->curr
.ib
.buffer
) {
243 assert(svga
->curr
.ib
.offset
% svga
->curr
.ib
.index_size
== 0);
244 offset
= svga
->curr
.ib
.offset
/ svga
->curr
.ib
.index_size
;
246 ret
= retry_draw_range_elements( svga
,
247 svga
->curr
.ib
.buffer
,
248 svga
->curr
.ib
.index_size
,
253 info
->start
+ offset
,
255 info
->start_instance
,
256 info
->instance_count
,
260 ret
= retry_draw_arrays(svga
, info
->mode
, info
->start
, count
,
261 info
->start_instance
, info
->instance_count
,
266 /* XXX: Silence warnings, do something sensible here? */
269 if (SVGA_DEBUG
& DEBUG_FLUSH
) {
270 svga_hwtnl_flush_retry( svga
);
271 svga_context_flush(svga
, NULL
);
276 void svga_init_draw_functions( struct svga_context
*svga
)
278 svga
->pipe
.draw_vbo
= svga_draw_vbo
;