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 "main/glheader.h"
33 #include "main/macros.h"
34 #include "main/enums.h"
36 #include "intel_batchbuffer.h"
38 #include "brw_defines.h"
39 #include "brw_context.h"
42 #include "brw_state.h"
47 static void compile_gs_prog( struct brw_context
*brw
,
48 struct brw_gs_prog_key
*key
)
50 struct intel_context
*intel
= &brw
->intel
;
51 struct brw_gs_compile c
;
52 const GLuint
*program
;
55 memset(&c
, 0, sizeof(c
));
58 /* Need to locate the two positions present in vertex + header.
59 * These are currently hardcoded:
61 c
.nr_attrs
= brw_count_bits(c
.key
.attrs
);
63 if (intel
->is_ironlake
)
64 c
.nr_regs
= (c
.nr_attrs
+ 1) / 2 + 3; /* are vertices packed, or reg-aligned? */
66 c
.nr_regs
= (c
.nr_attrs
+ 1) / 2 + 1; /* are vertices packed, or reg-aligned? */
68 c
.nr_bytes
= c
.nr_regs
* REG_SIZE
;
71 /* Begin the compilation:
73 brw_init_compile(brw
, &c
.func
);
75 c
.func
.single_program_flow
= 1;
77 /* For some reason the thread is spawned with only 4 channels
80 brw_set_mask_control(&c
.func
, BRW_MASK_DISABLE
);
83 /* Note that primitives which don't require a GS program have
84 * already been weeded out by this stage:
86 switch (key
->primitive
) {
88 brw_gs_quads( &c
, key
);
91 brw_gs_quad_strip( &c
, key
);
97 if (key
->hint_gs_always
)
104 if (key
->hint_gs_always
)
111 if (key
->hint_gs_always
)
123 program
= brw_get_program(&c
.func
, &program_size
);
127 dri_bo_unreference(brw
->gs
.prog_bo
);
128 brw
->gs
.prog_bo
= brw_upload_cache_with_auxdata(&brw
->cache
, BRW_GS_PROG
,
129 &c
.key
, sizeof(c
.key
),
131 program
, program_size
,
137 static const GLenum gs_prim
[GL_POLYGON
+1] = {
150 static void populate_key( struct brw_context
*brw
,
151 struct brw_gs_prog_key
*key
)
153 GLcontext
*ctx
= &brw
->intel
.ctx
;
154 memset(key
, 0, sizeof(*key
));
156 /* CACHE_NEW_VS_PROG */
157 key
->attrs
= brw
->vs
.prog_data
->outputs_written
;
159 /* BRW_NEW_PRIMITIVE */
160 key
->primitive
= gs_prim
[brw
->primitive
];
162 key
->hint_gs_always
= 0; /* debug code? */
165 key
->pv_first
= (ctx
->Light
.ProvokingVertex
== GL_FIRST_VERTEX_CONVENTION
);
167 key
->need_gs_prog
= (key
->hint_gs_always
||
168 brw
->primitive
== GL_QUADS
||
169 brw
->primitive
== GL_QUAD_STRIP
||
170 brw
->primitive
== GL_LINE_LOOP
);
173 /* Calculate interpolants for triangle and line rasterization.
175 static void prepare_gs_prog(struct brw_context
*brw
)
177 struct brw_gs_prog_key key
;
180 populate_key(brw
, &key
);
182 if (brw
->gs
.prog_active
!= key
.need_gs_prog
) {
183 brw
->state
.dirty
.cache
|= CACHE_NEW_GS_PROG
;
184 brw
->gs
.prog_active
= key
.need_gs_prog
;
187 if (brw
->gs
.prog_active
) {
188 dri_bo_unreference(brw
->gs
.prog_bo
);
189 brw
->gs
.prog_bo
= brw_search_cache(&brw
->cache
, BRW_GS_PROG
,
193 if (brw
->gs
.prog_bo
== NULL
)
194 compile_gs_prog( brw
, &key
);
199 const struct brw_tracked_state brw_gs_prog
= {
202 .brw
= BRW_NEW_PRIMITIVE
,
203 .cache
= CACHE_NEW_VS_PROG
205 .prepare
= prepare_gs_prog