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>
34 #include "brw_context.h"
35 #include "brw_state.h"
36 #include "brw_defines.h"
37 #include "main/macros.h"
40 brw_prepare_vs_unit(struct brw_context
*brw
)
42 struct intel_context
*intel
= &brw
->intel
;
43 struct gl_context
*ctx
= &intel
->ctx
;
44 struct brw_vs_unit_state
*vs
;
46 vs
= brw_state_batch(brw
, AUB_TRACE_VS_STATE
,
47 sizeof(*vs
), 32, &brw
->vs
.state_offset
);
48 memset(vs
, 0, sizeof(*vs
));
50 /* BRW_NEW_PROGRAM_CACHE | CACHE_NEW_VS_PROG */
51 vs
->thread0
.grf_reg_count
= ALIGN(brw
->vs
.prog_data
->total_grf
, 16) / 16 - 1;
52 vs
->thread0
.kernel_start_pointer
=
53 brw_program_reloc(brw
,
54 brw
->vs
.state_offset
+
55 offsetof(struct brw_vs_unit_state
, thread0
),
57 (vs
->thread0
.grf_reg_count
<< 1)) >> 6;
59 vs
->thread1
.floating_point_mode
= BRW_FLOATING_POINT_NON_IEEE_754
;
60 /* Choosing multiple program flow means that we may get 2-vertex threads,
61 * which will have the channel mask for dwords 4-7 enabled in the thread,
62 * and those dwords will be written to the second URB handle when we
63 * brw_urb_WRITE() results.
65 /* Disable single program flow on Ironlake. We cannot reliably get
66 * all applications working without it. See:
67 * https://bugs.freedesktop.org/show_bug.cgi?id=29172
69 * The most notable and reliably failing application is the Humus
72 vs
->thread1
.single_program_flow
= (intel
->gen
== 5);
74 /* BRW_NEW_NR_VS_SURFACES */
76 vs
->thread1
.binding_table_entry_count
= 0; /* hardware requirement */
78 vs
->thread1
.binding_table_entry_count
= brw
->vs
.nr_surfaces
;
80 vs
->thread3
.urb_entry_read_length
= brw
->vs
.prog_data
->urb_read_length
;
81 vs
->thread3
.const_urb_entry_read_length
= brw
->vs
.prog_data
->curb_read_length
;
82 vs
->thread3
.dispatch_grf_start_reg
= 1;
83 vs
->thread3
.urb_entry_read_offset
= 0;
85 /* BRW_NEW_CURBE_OFFSETS, _NEW_TRANSFORM */
86 if (ctx
->Transform
.ClipPlanesEnabled
) {
87 /* Note that we read in the userclip planes as well, hence
90 vs
->thread3
.const_urb_entry_read_offset
= brw
->curbe
.clip_start
* 2;
93 vs
->thread3
.const_urb_entry_read_offset
= brw
->curbe
.vs_start
* 2;
97 /* BRW_NEW_URB_FENCE */
98 if (intel
->gen
== 5) {
99 switch (brw
->urb
.nr_vs_entries
) {
111 vs
->thread4
.nr_urb_entries
= brw
->urb
.nr_vs_entries
>> 2;
117 switch (brw
->urb
.nr_vs_entries
) {
124 assert(intel
->is_g4x
);
129 vs
->thread4
.nr_urb_entries
= brw
->urb
.nr_vs_entries
;
132 vs
->thread4
.urb_entry_allocation_size
= brw
->urb
.vsize
- 1;
134 vs
->thread4
.max_threads
= CLAMP(brw
->urb
.nr_vs_entries
/ 2,
135 1, brw
->vs_max_threads
) - 1;
137 /* No samplers for ARB_vp programs:
139 /* It has to be set to 0 for Ironlake
141 vs
->vs5
.sampler_count
= 0;
143 if (unlikely(INTEL_DEBUG
& DEBUG_STATS
))
144 vs
->thread4
.stats_enable
= 1;
146 /* Vertex program always enabled:
148 vs
->vs6
.vs_enable
= 1;
150 brw
->state
.dirty
.cache
|= CACHE_NEW_VS_UNIT
;
153 const struct brw_tracked_state brw_vs_unit
= {
155 .mesa
= _NEW_TRANSFORM
,
156 .brw
= (BRW_NEW_BATCH
|
157 BRW_NEW_PROGRAM_CACHE
|
158 BRW_NEW_CURBE_OFFSETS
|
159 BRW_NEW_NR_VS_SURFACES
|
161 .cache
= CACHE_NEW_VS_PROG
163 .prepare
= brw_prepare_vs_unit
,