2 * Copyright © 2009 Intel Corporation
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
24 * Eric Anholt <eric@anholt.net>
28 #include "brw_context.h"
29 #include "brw_state.h"
30 #include "brw_defines.h"
31 #include "intel_batchbuffer.h"
34 gen6_upload_gs_push_constants(struct brw_context
*brw
)
36 struct brw_stage_state
*stage_state
= &brw
->gs
.base
;
38 /* BRW_NEW_GEOMETRY_PROGRAM */
39 const struct brw_geometry_program
*gp
=
40 (struct brw_geometry_program
*) brw
->geometry_program
;
43 /* BRW_NEW_GS_PROG_DATA */
44 struct brw_stage_prog_data
*prog_data
= &brw
->gs
.prog_data
->base
.base
;
46 gen6_upload_push_constants(brw
, &gp
->program
.Base
, prog_data
,
47 stage_state
, AUB_TRACE_VS_CONSTANTS
);
51 gen7_upload_constant_state(brw
, stage_state
, gp
, _3DSTATE_CONSTANT_GS
);
54 const struct brw_tracked_state gen6_gs_push_constants
= {
56 .mesa
= _NEW_PROGRAM_CONSTANTS
|
58 .brw
= BRW_NEW_BATCH
|
60 BRW_NEW_GEOMETRY_PROGRAM
|
61 BRW_NEW_GS_PROG_DATA
|
62 BRW_NEW_PUSH_CONSTANT_ALLOCATION
,
64 .emit
= gen6_upload_gs_push_constants
,
68 upload_gs_state_for_tf(struct brw_context
*brw
)
71 OUT_BATCH(_3DSTATE_GS
<< 16 | (7 - 2));
72 OUT_BATCH(brw
->ff_gs
.prog_offset
);
73 OUT_BATCH(GEN6_GS_SPF_MODE
| GEN6_GS_VECTOR_MASK_ENABLE
);
74 OUT_BATCH(0); /* no scratch space */
75 OUT_BATCH((2 << GEN6_GS_DISPATCH_START_GRF_SHIFT
) |
76 (brw
->ff_gs
.prog_data
->urb_read_length
<< GEN6_GS_URB_READ_LENGTH_SHIFT
));
77 OUT_BATCH(((brw
->max_gs_threads
- 1) << GEN6_GS_MAX_THREADS_SHIFT
) |
78 GEN6_GS_STATISTICS_ENABLE
|
79 GEN6_GS_SO_STATISTICS_ENABLE
|
80 GEN6_GS_RENDERING_ENABLE
);
81 OUT_BATCH(GEN6_GS_SVBI_PAYLOAD_ENABLE
|
82 GEN6_GS_SVBI_POSTINCREMENT_ENABLE
|
83 (brw
->ff_gs
.prog_data
->svbi_postincrement_value
<<
84 GEN6_GS_SVBI_POSTINCREMENT_VALUE_SHIFT
) |
90 upload_gs_state(struct brw_context
*brw
)
92 /* BRW_NEW_GEOMETRY_PROGRAM */
93 bool active
= brw
->geometry_program
;
94 /* BRW_NEW_GS_PROG_DATA */
95 const struct brw_vue_prog_data
*prog_data
= &brw
->gs
.prog_data
->base
;
96 const struct brw_stage_state
*stage_state
= &brw
->gs
.base
;
98 if (!active
|| stage_state
->push_const_size
== 0) {
99 /* Disable the push constant buffers. */
101 OUT_BATCH(_3DSTATE_CONSTANT_GS
<< 16 | (5 - 2));
109 OUT_BATCH(_3DSTATE_CONSTANT_GS
<< 16 |
110 GEN6_CONSTANT_BUFFER_0_ENABLE
|
112 /* Pointer to the GS constant buffer. Covered by the set of
113 * state flags from gen6_upload_vs_constants
115 OUT_BATCH(stage_state
->push_const_offset
+
116 stage_state
->push_const_size
- 1);
125 OUT_BATCH(_3DSTATE_GS
<< 16 | (7 - 2));
126 OUT_BATCH(stage_state
->prog_offset
);
128 /* GEN6_GS_SPF_MODE and GEN6_GS_VECTOR_MASK_ENABLE are enabled as it
129 * was previously done for gen6.
131 * TODO: test with both disabled to see if the HW is behaving
132 * as expected, like in gen7.
134 OUT_BATCH(GEN6_GS_SPF_MODE
| GEN6_GS_VECTOR_MASK_ENABLE
|
135 ((ALIGN(stage_state
->sampler_count
, 4)/4) <<
136 GEN6_GS_SAMPLER_COUNT_SHIFT
) |
137 ((prog_data
->base
.binding_table
.size_bytes
/ 4) <<
138 GEN6_GS_BINDING_TABLE_ENTRY_COUNT_SHIFT
));
140 if (prog_data
->base
.total_scratch
) {
141 OUT_RELOC(stage_state
->scratch_bo
,
142 I915_GEM_DOMAIN_RENDER
, I915_GEM_DOMAIN_RENDER
,
143 ffs(stage_state
->per_thread_scratch
) - 11);
145 OUT_BATCH(0); /* no scratch space */
148 OUT_BATCH((prog_data
->urb_read_length
<<
149 GEN6_GS_URB_READ_LENGTH_SHIFT
) |
150 (0 << GEN6_GS_URB_ENTRY_READ_OFFSET_SHIFT
) |
151 (prog_data
->base
.dispatch_grf_start_reg
<<
152 GEN6_GS_DISPATCH_START_GRF_SHIFT
));
154 OUT_BATCH(((brw
->max_gs_threads
- 1) << GEN6_GS_MAX_THREADS_SHIFT
) |
155 GEN6_GS_STATISTICS_ENABLE
|
156 GEN6_GS_SO_STATISTICS_ENABLE
|
157 GEN6_GS_RENDERING_ENABLE
);
159 if (brw
->gs
.prog_data
->gen6_xfb_enabled
) {
160 /* GEN6_GS_REORDER is equivalent to GEN7_GS_REORDER_TRAILING
161 * in gen7. SNB and IVB specs are the same regarding the reordering of
162 * TRISTRIP/TRISTRIP_REV vertices and triangle orientation, so we do
163 * the same thing in both generations. For more details, see the
164 * comment in gen7_gs_state.c
166 OUT_BATCH(GEN6_GS_REORDER
|
167 GEN6_GS_SVBI_PAYLOAD_ENABLE
|
170 OUT_BATCH(GEN6_GS_REORDER
| GEN6_GS_ENABLE
);
173 } else if (brw
->ff_gs
.prog_active
) {
174 /* In gen6, transform feedback for the VS stage is done with an ad-hoc GS
175 * program. This function provides the needed 3DSTATE_GS for this.
177 upload_gs_state_for_tf(brw
);
179 /* No GS function required */
181 OUT_BATCH(_3DSTATE_GS
<< 16 | (7 - 2));
182 OUT_BATCH(0); /* prog_bo */
183 OUT_BATCH((0 << GEN6_GS_SAMPLER_COUNT_SHIFT
) |
184 (0 << GEN6_GS_BINDING_TABLE_ENTRY_COUNT_SHIFT
));
185 OUT_BATCH(0); /* scratch space base offset */
186 OUT_BATCH((1 << GEN6_GS_DISPATCH_START_GRF_SHIFT
) |
187 (0 << GEN6_GS_URB_READ_LENGTH_SHIFT
) |
188 (0 << GEN6_GS_URB_ENTRY_READ_OFFSET_SHIFT
));
189 OUT_BATCH((0 << GEN6_GS_MAX_THREADS_SHIFT
) |
190 GEN6_GS_STATISTICS_ENABLE
|
191 GEN6_GS_RENDERING_ENABLE
);
195 brw
->gs
.enabled
= active
;
198 const struct brw_tracked_state gen6_gs_state
= {
200 .mesa
= _NEW_PROGRAM_CONSTANTS
|
202 .brw
= BRW_NEW_BATCH
|
205 BRW_NEW_FF_GS_PROG_DATA
|
206 BRW_NEW_GEOMETRY_PROGRAM
|
207 BRW_NEW_GS_PROG_DATA
|
208 BRW_NEW_PUSH_CONSTANT_ALLOCATION
,
210 .emit
= upload_gs_state
,