2 Copyright (C) Intel Corp. 2006. All Rights Reserved.
3 Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to
4 develop this 3D driver.
6 Permission is hereby granted, free of charge, to any person obtaining
7 a 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, sublicense, 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
16 portions of the Software.
18 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
19 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
21 IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
22 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
23 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
24 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **********************************************************************/
29 * Keith Whitwell <keith@tungstengraphics.com>
32 #include "brw_batchbuffer.h"
34 #include "brw_defines.h"
35 #include "brw_context.h"
38 #include "brw_state.h"
43 static enum pipe_error
compile_gs_prog( struct brw_context
*brw
,
44 struct brw_gs_prog_key
*key
,
45 struct brw_winsys_buffer
**bo_out
)
47 struct brw_gs_compile c
;
49 const GLuint
*program
;
52 memset(&c
, 0, sizeof(c
));
55 c
.need_ff_sync
= BRW_IS_IGDNG(brw
);
56 /* Need to locate the two positions present in vertex + header.
57 * These are currently hardcoded:
59 c
.nr_attrs
= c
.key
.nr_attrs
;
61 if (BRW_IS_IGDNG(brw
))
62 c
.nr_regs
= (c
.nr_attrs
+ 1) / 2 + 3; /* are vertices packed, or reg-aligned? */
64 c
.nr_regs
= (c
.nr_attrs
+ 1) / 2 + 1; /* are vertices packed, or reg-aligned? */
66 c
.nr_bytes
= c
.nr_regs
* REG_SIZE
;
69 /* Begin the compilation:
71 brw_init_compile(brw
, &c
.func
);
73 c
.func
.single_program_flow
= 1;
75 /* For some reason the thread is spawned with only 4 channels
78 brw_set_mask_control(&c
.func
, BRW_MASK_DISABLE
);
81 /* Note that primitives which don't require a GS program have
82 * already been weeded out by this stage:
84 switch (key
->primitive
) {
88 case PIPE_PRIM_QUAD_STRIP
:
89 brw_gs_quad_strip( &c
);
91 case PIPE_PRIM_LINE_LOOP
:
95 if (key
->hint_gs_always
)
101 case PIPE_PRIM_TRIANGLES
:
102 if (key
->hint_gs_always
)
108 case PIPE_PRIM_POINTS
:
109 if (key
->hint_gs_always
)
117 return PIPE_ERROR_BAD_INPUT
;
122 ret
= brw_get_program(&c
.func
, &program
, &program_size
);
128 ret
= brw_upload_cache( &brw
->cache
, BRW_GS_PROG
,
129 &c
.key
, sizeof(c
.key
),
131 program
, program_size
,
141 static const unsigned gs_prim
[PIPE_PRIM_MAX
] = {
150 PIPE_PRIM_QUAD_STRIP
,
154 static void populate_key( struct brw_context
*brw
,
155 struct brw_gs_prog_key
*key
)
157 const struct brw_fs_signature
*sig
= &brw
->curr
.fragment_shader
->signature
;
159 memset(key
, 0, sizeof(*key
));
161 /* PIPE_NEW_FRAGMENT_SIGNATURE */
162 key
->nr_attrs
= sig
->nr_inputs
+ 1;
164 /* BRW_NEW_PRIMITIVE */
165 key
->primitive
= gs_prim
[brw
->primitive
];
167 key
->hint_gs_always
= 0; /* debug code? */
169 key
->need_gs_prog
= (key
->hint_gs_always
||
170 brw
->primitive
== PIPE_PRIM_QUADS
||
171 brw
->primitive
== PIPE_PRIM_QUAD_STRIP
||
172 brw
->primitive
== PIPE_PRIM_LINE_LOOP
);
175 /* Calculate interpolants for triangle and line rasterization.
177 static int prepare_gs_prog(struct brw_context
*brw
)
179 struct brw_gs_prog_key key
;
184 populate_key(brw
, &key
);
186 if (brw
->gs
.prog_active
!= key
.need_gs_prog
) {
187 brw
->state
.dirty
.cache
|= CACHE_NEW_GS_PROG
;
188 brw
->gs
.prog_active
= key
.need_gs_prog
;
191 if (!brw
->gs
.prog_active
)
194 if (brw_search_cache(&brw
->cache
, BRW_GS_PROG
,
201 ret
= compile_gs_prog( brw
, &key
, &brw
->gs
.prog_bo
);
209 const struct brw_tracked_state brw_gs_prog
= {
211 .mesa
= PIPE_NEW_FRAGMENT_SIGNATURE
,
212 .brw
= BRW_NEW_PRIMITIVE
,
215 .prepare
= prepare_gs_prog