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25 * \file brw_binding_tables.c
27 * State atoms which upload the "binding table" for each shader stage.
29 * Binding tables map a numeric "surface index" to the SURFACE_STATE structure
30 * for a currently bound surface. This allows SEND messages (such as sampler
31 * or data port messages) to refer to a particular surface by number, rather
34 * The binding table is stored as a (sparse) array of SURFACE_STATE entries;
35 * surface indexes are simply indexes into the array. The ordering of the
36 * entries is entirely left up to software; see the SURF_INDEX_* macros in
37 * brw_context.h to see our current layout.
40 #include "main/mtypes.h"
42 #include "brw_context.h"
43 #include "brw_defines.h"
44 #include "brw_state.h"
45 #include "intel_batchbuffer.h"
48 * Upload a shader stage's binding table as indirect state.
50 * This copies brw_stage_state::surf_offset[] into the indirect state section
51 * of the batchbuffer (allocated by brw_state_batch()).
54 brw_upload_binding_table(struct brw_context
*brw
,
56 GLbitfield brw_new_binding_table
,
57 struct brw_stage_state
*stage_state
)
59 /* CACHE_NEW_*_PROG */
60 struct brw_stage_prog_data
*prog_data
= stage_state
->prog_data
;
62 if (prog_data
->binding_table
.size_bytes
== 0) {
63 /* There are no surfaces; skip making the binding table altogether. */
64 if (stage_state
->bind_bo_offset
== 0)
67 stage_state
->bind_bo_offset
= 0;
69 /* Upload a new binding table. */
70 if (INTEL_DEBUG
& DEBUG_SHADER_TIME
) {
71 brw
->vtbl
.create_raw_surface(
72 brw
, brw
->shader_time
.bo
, 0, brw
->shader_time
.bo
->size
,
73 &stage_state
->surf_offset
[prog_data
->binding_table
.shader_time_start
], true);
76 uint32_t *bind
= brw_state_batch(brw
, AUB_TRACE_BINDING_TABLE
,
77 prog_data
->binding_table
.size_bytes
, 32,
78 &stage_state
->bind_bo_offset
);
80 /* BRW_NEW_SURFACES and BRW_NEW_*_CONSTBUF */
81 memcpy(bind
, stage_state
->surf_offset
,
82 prog_data
->binding_table
.size_bytes
);
85 brw
->state
.dirty
.brw
|= brw_new_binding_table
;
89 OUT_BATCH(packet_name
<< 16 | (2 - 2));
90 OUT_BATCH(stage_state
->bind_bo_offset
);
96 * State atoms which upload the binding table for a particular shader stage.
100 /** Upload the VS binding table. */
102 brw_vs_upload_binding_table(struct brw_context
*brw
)
104 brw_upload_binding_table(brw
,
105 _3DSTATE_BINDING_TABLE_POINTERS_VS
,
106 BRW_NEW_VS_BINDING_TABLE
, &brw
->vs
.base
);
109 const struct brw_tracked_state brw_vs_binding_table
= {
112 .brw
= BRW_NEW_BATCH
|
113 BRW_NEW_VS_CONSTBUF
|
115 .cache
= CACHE_NEW_VS_PROG
117 .emit
= brw_vs_upload_binding_table
,
121 /** Upload the PS binding table. */
123 brw_upload_wm_binding_table(struct brw_context
*brw
)
125 brw_upload_binding_table(brw
,
126 _3DSTATE_BINDING_TABLE_POINTERS_PS
,
127 BRW_NEW_PS_BINDING_TABLE
, &brw
->wm
.base
);
130 const struct brw_tracked_state brw_wm_binding_table
= {
133 .brw
= BRW_NEW_BATCH
| BRW_NEW_SURFACES
,
134 .cache
= CACHE_NEW_WM_PROG
136 .emit
= brw_upload_wm_binding_table
,
139 /** Upload the GS binding table (if GS is active). */
141 brw_gs_upload_binding_table(struct brw_context
*brw
)
143 /* If there's no GS, skip changing anything. */
144 if (brw
->geometry_program
== NULL
)
147 brw_upload_binding_table(brw
,
148 _3DSTATE_BINDING_TABLE_POINTERS_GS
,
149 BRW_NEW_GS_BINDING_TABLE
, &brw
->gs
.base
);
152 const struct brw_tracked_state brw_gs_binding_table
= {
155 .brw
= BRW_NEW_BATCH
|
156 BRW_NEW_GS_CONSTBUF
|
158 .cache
= CACHE_NEW_GS_PROG
160 .emit
= brw_gs_upload_binding_table
,
166 * State atoms which emit 3DSTATE packets to update the binding table pointers.
171 * (Gen4-5) Upload the binding table pointers for all shader stages.
173 * The binding table pointers are relative to the surface state base address,
174 * which points at the batchbuffer containing the streamed batch state.
177 gen4_upload_binding_table_pointers(struct brw_context
*brw
)
180 OUT_BATCH(_3DSTATE_BINDING_TABLE_POINTERS
<< 16 | (6 - 2));
181 OUT_BATCH(brw
->vs
.base
.bind_bo_offset
);
182 OUT_BATCH(0); /* gs */
183 OUT_BATCH(0); /* clip */
184 OUT_BATCH(0); /* sf */
185 OUT_BATCH(brw
->wm
.base
.bind_bo_offset
);
189 const struct brw_tracked_state brw_binding_table_pointers
= {
192 .brw
= (BRW_NEW_BATCH
|
193 BRW_NEW_STATE_BASE_ADDRESS
|
194 BRW_NEW_VS_BINDING_TABLE
|
195 BRW_NEW_GS_BINDING_TABLE
|
196 BRW_NEW_PS_BINDING_TABLE
),
199 .emit
= gen4_upload_binding_table_pointers
,
203 * (Sandybridge Only) Upload the binding table pointers for all shader stages.
205 * The binding table pointers are relative to the surface state base address,
206 * which points at the batchbuffer containing the streamed batch state.
209 gen6_upload_binding_table_pointers(struct brw_context
*brw
)
212 OUT_BATCH(_3DSTATE_BINDING_TABLE_POINTERS
<< 16 |
213 GEN6_BINDING_TABLE_MODIFY_VS
|
214 GEN6_BINDING_TABLE_MODIFY_GS
|
215 GEN6_BINDING_TABLE_MODIFY_PS
|
217 OUT_BATCH(brw
->vs
.base
.bind_bo_offset
); /* vs */
218 OUT_BATCH(brw
->ff_gs
.bind_bo_offset
); /* gs */
219 OUT_BATCH(brw
->wm
.base
.bind_bo_offset
); /* wm/ps */
223 const struct brw_tracked_state gen6_binding_table_pointers
= {
226 .brw
= (BRW_NEW_BATCH
|
227 BRW_NEW_STATE_BASE_ADDRESS
|
228 BRW_NEW_VS_BINDING_TABLE
|
229 BRW_NEW_GS_BINDING_TABLE
|
230 BRW_NEW_PS_BINDING_TABLE
),
233 .emit
= gen6_upload_binding_table_pointers
,