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"
32 #include "main/shaderapi.h"
35 gen6_upload_gs_push_constants(struct brw_context
*brw
)
37 struct brw_stage_state
*stage_state
= &brw
->gs
.base
;
39 /* BRW_NEW_GEOMETRY_PROGRAM */
40 const struct brw_geometry_program
*gp
=
41 (struct brw_geometry_program
*) brw
->geometry_program
;
44 /* BRW_NEW_GS_PROG_DATA */
45 struct brw_stage_prog_data
*prog_data
= brw
->gs
.base
.prog_data
;
47 _mesa_shader_write_subroutine_indices(&brw
->ctx
, MESA_SHADER_GEOMETRY
);
48 gen6_upload_push_constants(brw
, &gp
->program
, prog_data
, stage_state
,
49 AUB_TRACE_VS_CONSTANTS
);
53 gen7_upload_constant_state(brw
, stage_state
, gp
, _3DSTATE_CONSTANT_GS
);
56 const struct brw_tracked_state gen6_gs_push_constants
= {
58 .mesa
= _NEW_PROGRAM_CONSTANTS
|
60 .brw
= BRW_NEW_BATCH
|
62 BRW_NEW_GEOMETRY_PROGRAM
|
63 BRW_NEW_GS_PROG_DATA
|
64 BRW_NEW_PUSH_CONSTANT_ALLOCATION
,
66 .emit
= gen6_upload_gs_push_constants
,
70 upload_gs_state_for_tf(struct brw_context
*brw
)
72 const struct gen_device_info
*devinfo
= &brw
->screen
->devinfo
;
75 OUT_BATCH(_3DSTATE_GS
<< 16 | (7 - 2));
76 OUT_BATCH(brw
->ff_gs
.prog_offset
);
77 OUT_BATCH(GEN6_GS_SPF_MODE
| GEN6_GS_VECTOR_MASK_ENABLE
);
78 OUT_BATCH(0); /* no scratch space */
79 OUT_BATCH((2 << GEN6_GS_DISPATCH_START_GRF_SHIFT
) |
80 (brw
->ff_gs
.prog_data
->urb_read_length
<< GEN6_GS_URB_READ_LENGTH_SHIFT
));
81 OUT_BATCH(((devinfo
->max_gs_threads
- 1) << GEN6_GS_MAX_THREADS_SHIFT
) |
82 GEN6_GS_STATISTICS_ENABLE
|
83 GEN6_GS_SO_STATISTICS_ENABLE
|
84 GEN6_GS_RENDERING_ENABLE
);
85 OUT_BATCH(GEN6_GS_SVBI_PAYLOAD_ENABLE
|
86 GEN6_GS_SVBI_POSTINCREMENT_ENABLE
|
87 (brw
->ff_gs
.prog_data
->svbi_postincrement_value
<<
88 GEN6_GS_SVBI_POSTINCREMENT_VALUE_SHIFT
) |
94 upload_gs_state(struct brw_context
*brw
)
96 const struct gen_device_info
*devinfo
= &brw
->screen
->devinfo
;
97 /* BRW_NEW_GEOMETRY_PROGRAM */
98 bool active
= brw
->geometry_program
;
99 /* BRW_NEW_GS_PROG_DATA */
100 const struct brw_stage_state
*stage_state
= &brw
->gs
.base
;
101 const struct brw_stage_prog_data
*prog_data
= stage_state
->prog_data
;
102 const struct brw_vue_prog_data
*vue_prog_data
=
103 brw_vue_prog_data(stage_state
->prog_data
);
104 const struct brw_gs_prog_data
*gs_prog_data
=
105 brw_gs_prog_data(stage_state
->prog_data
);
107 if (!active
|| stage_state
->push_const_size
== 0) {
108 /* Disable the push constant buffers. */
110 OUT_BATCH(_3DSTATE_CONSTANT_GS
<< 16 | (5 - 2));
118 OUT_BATCH(_3DSTATE_CONSTANT_GS
<< 16 |
119 GEN6_CONSTANT_BUFFER_0_ENABLE
|
121 /* Pointer to the GS constant buffer. Covered by the set of
122 * state flags from gen6_upload_vs_constants
124 OUT_BATCH(stage_state
->push_const_offset
+
125 stage_state
->push_const_size
- 1);
134 OUT_BATCH(_3DSTATE_GS
<< 16 | (7 - 2));
135 OUT_BATCH(stage_state
->prog_offset
);
137 /* GEN6_GS_SPF_MODE and GEN6_GS_VECTOR_MASK_ENABLE are enabled as it
138 * was previously done for gen6.
140 * TODO: test with both disabled to see if the HW is behaving
141 * as expected, like in gen7.
143 OUT_BATCH(GEN6_GS_SPF_MODE
| GEN6_GS_VECTOR_MASK_ENABLE
|
144 ((ALIGN(stage_state
->sampler_count
, 4)/4) <<
145 GEN6_GS_SAMPLER_COUNT_SHIFT
) |
146 ((prog_data
->binding_table
.size_bytes
/ 4) <<
147 GEN6_GS_BINDING_TABLE_ENTRY_COUNT_SHIFT
));
149 if (prog_data
->total_scratch
) {
150 OUT_RELOC(stage_state
->scratch_bo
,
151 I915_GEM_DOMAIN_RENDER
, I915_GEM_DOMAIN_RENDER
,
152 ffs(stage_state
->per_thread_scratch
) - 11);
154 OUT_BATCH(0); /* no scratch space */
157 OUT_BATCH((vue_prog_data
->urb_read_length
<<
158 GEN6_GS_URB_READ_LENGTH_SHIFT
) |
159 (0 << GEN6_GS_URB_ENTRY_READ_OFFSET_SHIFT
) |
160 (prog_data
->dispatch_grf_start_reg
<<
161 GEN6_GS_DISPATCH_START_GRF_SHIFT
));
163 OUT_BATCH(((devinfo
->max_gs_threads
- 1) << GEN6_GS_MAX_THREADS_SHIFT
) |
164 GEN6_GS_STATISTICS_ENABLE
|
165 GEN6_GS_SO_STATISTICS_ENABLE
|
166 GEN6_GS_RENDERING_ENABLE
);
168 if (gs_prog_data
->gen6_xfb_enabled
) {
169 /* GEN6_GS_REORDER is equivalent to GEN7_GS_REORDER_TRAILING
170 * in gen7. SNB and IVB specs are the same regarding the reordering of
171 * TRISTRIP/TRISTRIP_REV vertices and triangle orientation, so we do
172 * the same thing in both generations. For more details, see the
173 * comment in gen7_gs_state.c
175 OUT_BATCH(GEN6_GS_REORDER
|
176 GEN6_GS_SVBI_PAYLOAD_ENABLE
|
179 OUT_BATCH(GEN6_GS_REORDER
| GEN6_GS_ENABLE
);
182 } else if (brw
->ff_gs
.prog_active
) {
183 /* In gen6, transform feedback for the VS stage is done with an ad-hoc GS
184 * program. This function provides the needed 3DSTATE_GS for this.
186 upload_gs_state_for_tf(brw
);
188 /* No GS function required */
190 OUT_BATCH(_3DSTATE_GS
<< 16 | (7 - 2));
191 OUT_BATCH(0); /* prog_bo */
192 OUT_BATCH((0 << GEN6_GS_SAMPLER_COUNT_SHIFT
) |
193 (0 << GEN6_GS_BINDING_TABLE_ENTRY_COUNT_SHIFT
));
194 OUT_BATCH(0); /* scratch space base offset */
195 OUT_BATCH((1 << GEN6_GS_DISPATCH_START_GRF_SHIFT
) |
196 (0 << GEN6_GS_URB_READ_LENGTH_SHIFT
) |
197 (0 << GEN6_GS_URB_ENTRY_READ_OFFSET_SHIFT
));
198 OUT_BATCH((0 << GEN6_GS_MAX_THREADS_SHIFT
) |
199 GEN6_GS_STATISTICS_ENABLE
|
200 GEN6_GS_RENDERING_ENABLE
);
204 brw
->gs
.enabled
= active
;
207 const struct brw_tracked_state gen6_gs_state
= {
209 .mesa
= _NEW_PROGRAM_CONSTANTS
|
211 .brw
= BRW_NEW_BATCH
|
214 BRW_NEW_FF_GS_PROG_DATA
|
215 BRW_NEW_GEOMETRY_PROGRAM
|
216 BRW_NEW_GS_PROG_DATA
|
217 BRW_NEW_PUSH_CONSTANT_ALLOCATION
,
219 .emit
= upload_gs_state
,