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/*
* Copyright © 2013 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
/**
* \file brw_binding_tables.c
*
* State atoms which upload the "binding table" for each shader stage.
*
* Binding tables map a numeric "surface index" to the SURFACE_STATE structure
* for a currently bound surface. This allows SEND messages (such as sampler
* or data port messages) to refer to a particular surface by number, rather
* than by pointer.
*
* The binding table is stored as a (sparse) array of SURFACE_STATE entries;
* surface indexes are simply indexes into the array. The ordering of the
* entries is entirely left up to software; see the SURF_INDEX_* macros in
* brw_context.h to see our current layout.
*/
#include "main/mtypes.h"
#include "brw_context.h"
#include "brw_defines.h"
#include "brw_state.h"
#include "intel_batchbuffer.h"
/**
* Upload a shader stage's binding table as indirect state.
*
* This copies brw_stage_state::surf_offset[] into the indirect state section
* of the batchbuffer (allocated by brw_state_batch()).
*/
static void
brw_upload_binding_table(struct brw_context *brw,
uint32_t packet_name,
GLbitfield brw_new_binding_table,
struct brw_stage_state *stage_state)
{
/* CACHE_NEW_*_PROG */
struct brw_stage_prog_data *prog_data = stage_state->prog_data;
if (prog_data->binding_table.size_bytes == 0) {
/* There are no surfaces; skip making the binding table altogether. */
if (stage_state->bind_bo_offset == 0)
return;
stage_state->bind_bo_offset = 0;
} else {
/* Upload a new binding table. */
if (INTEL_DEBUG & DEBUG_SHADER_TIME) {
brw->vtbl.create_raw_surface(
brw, brw->shader_time.bo, 0, brw->shader_time.bo->size,
&stage_state->surf_offset[prog_data->binding_table.shader_time_start], true);
}
uint32_t *bind = brw_state_batch(brw, AUB_TRACE_BINDING_TABLE,
prog_data->binding_table.size_bytes, 32,
&stage_state->bind_bo_offset);
/* BRW_NEW_SURFACES and BRW_NEW_*_CONSTBUF */
memcpy(bind, stage_state->surf_offset,
prog_data->binding_table.size_bytes);
}
brw->state.dirty.brw |= brw_new_binding_table;
if (brw->gen >= 7) {
BEGIN_BATCH(2);
OUT_BATCH(packet_name << 16 | (2 - 2));
OUT_BATCH(stage_state->bind_bo_offset);
ADVANCE_BATCH();
}
}
/**
* State atoms which upload the binding table for a particular shader stage.
* @{
*/
/** Upload the VS binding table. */
static void
brw_vs_upload_binding_table(struct brw_context *brw)
{
brw_upload_binding_table(brw,
_3DSTATE_BINDING_TABLE_POINTERS_VS,
BRW_NEW_VS_BINDING_TABLE, &brw->vs.base);
}
const struct brw_tracked_state brw_vs_binding_table = {
.dirty = {
.mesa = 0,
.brw = BRW_NEW_BATCH |
BRW_NEW_VS_CONSTBUF |
BRW_NEW_SURFACES,
.cache = CACHE_NEW_VS_PROG
},
.emit = brw_vs_upload_binding_table,
};
/** Upload the PS binding table. */
static void
brw_upload_wm_binding_table(struct brw_context *brw)
{
brw_upload_binding_table(brw,
_3DSTATE_BINDING_TABLE_POINTERS_PS,
BRW_NEW_PS_BINDING_TABLE, &brw->wm.base);
}
const struct brw_tracked_state brw_wm_binding_table = {
.dirty = {
.mesa = 0,
.brw = BRW_NEW_BATCH | BRW_NEW_SURFACES,
.cache = CACHE_NEW_WM_PROG
},
.emit = brw_upload_wm_binding_table,
};
/** Upload the GS binding table (if GS is active). */
static void
brw_gs_upload_binding_table(struct brw_context *brw)
{
/* If there's no GS, skip changing anything. */
if (brw->geometry_program == NULL)
return;
brw_upload_binding_table(brw,
_3DSTATE_BINDING_TABLE_POINTERS_GS,
BRW_NEW_GS_BINDING_TABLE, &brw->gs.base);
}
const struct brw_tracked_state brw_gs_binding_table = {
.dirty = {
.mesa = 0,
.brw = BRW_NEW_BATCH |
BRW_NEW_GS_CONSTBUF |
BRW_NEW_SURFACES,
.cache = CACHE_NEW_GS_PROG
},
.emit = brw_gs_upload_binding_table,
};
/** @} */
/**
* State atoms which emit 3DSTATE packets to update the binding table pointers.
* @{
*/
/**
* (Gen4-5) Upload the binding table pointers for all shader stages.
*
* The binding table pointers are relative to the surface state base address,
* which points at the batchbuffer containing the streamed batch state.
*/
static void
gen4_upload_binding_table_pointers(struct brw_context *brw)
{
BEGIN_BATCH(6);
OUT_BATCH(_3DSTATE_BINDING_TABLE_POINTERS << 16 | (6 - 2));
OUT_BATCH(brw->vs.base.bind_bo_offset);
OUT_BATCH(0); /* gs */
OUT_BATCH(0); /* clip */
OUT_BATCH(0); /* sf */
OUT_BATCH(brw->wm.base.bind_bo_offset);
ADVANCE_BATCH();
}
const struct brw_tracked_state brw_binding_table_pointers = {
.dirty = {
.mesa = 0,
.brw = (BRW_NEW_BATCH |
BRW_NEW_STATE_BASE_ADDRESS |
BRW_NEW_VS_BINDING_TABLE |
BRW_NEW_GS_BINDING_TABLE |
BRW_NEW_PS_BINDING_TABLE),
.cache = 0,
},
.emit = gen4_upload_binding_table_pointers,
};
/**
* (Sandybridge Only) Upload the binding table pointers for all shader stages.
*
* The binding table pointers are relative to the surface state base address,
* which points at the batchbuffer containing the streamed batch state.
*/
static void
gen6_upload_binding_table_pointers(struct brw_context *brw)
{
BEGIN_BATCH(4);
OUT_BATCH(_3DSTATE_BINDING_TABLE_POINTERS << 16 |
GEN6_BINDING_TABLE_MODIFY_VS |
GEN6_BINDING_TABLE_MODIFY_GS |
GEN6_BINDING_TABLE_MODIFY_PS |
(4 - 2));
OUT_BATCH(brw->vs.base.bind_bo_offset); /* vs */
OUT_BATCH(brw->ff_gs.bind_bo_offset); /* gs */
OUT_BATCH(brw->wm.base.bind_bo_offset); /* wm/ps */
ADVANCE_BATCH();
}
const struct brw_tracked_state gen6_binding_table_pointers = {
.dirty = {
.mesa = 0,
.brw = (BRW_NEW_BATCH |
BRW_NEW_STATE_BASE_ADDRESS |
BRW_NEW_VS_BINDING_TABLE |
BRW_NEW_GS_BINDING_TABLE |
BRW_NEW_PS_BINDING_TABLE),
.cache = 0,
},
.emit = gen6_upload_binding_table_pointers,
};
/* Gen7+ code lives in gen7_{vs,gs,wm}_state.c. */
/** @} */
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