[Mesa-dev] [PATCH v4 10/12] anv: Support new local ID generation & cross-thread constants
Jordan Justen
jordan.l.justen at intel.com
Wed Jun 1 22:04:17 UTC 2016
The cross thread constant support appears on Haswell. It allows us to
upload a set of uniform data for all threads without duplicating it
per thread.
We also support per-thread data which allows us to store a per-thread
ID in one of the uniforms that can be used to calculate the
gl_LocalInvocationIndex and gl_LocalInvocationID variables.
v4:
* Support the old local ID push constant layout as well (Jason)
Signed-off-by: Jordan Justen <jordan.l.justen at intel.com>
---
src/intel/vulkan/anv_cmd_buffer.c | 54 +++++++++++++++++++++-----------------
src/intel/vulkan/gen7_cmd_buffer.c | 13 ++++-----
src/intel/vulkan/gen8_cmd_buffer.c | 13 ++++-----
src/intel/vulkan/genX_pipeline.c | 10 ++-----
4 files changed, 42 insertions(+), 48 deletions(-)
diff --git a/src/intel/vulkan/anv_cmd_buffer.c b/src/intel/vulkan/anv_cmd_buffer.c
index 63d096c..edaaa3d 100644
--- a/src/intel/vulkan/anv_cmd_buffer.c
+++ b/src/intel/vulkan/anv_cmd_buffer.c
@@ -1065,23 +1065,14 @@ anv_cmd_buffer_cs_push_constants(struct anv_cmd_buffer *cmd_buffer)
const struct brw_cs_prog_data *cs_prog_data = get_cs_prog_data(pipeline);
const struct brw_stage_prog_data *prog_data = &cs_prog_data->base;
- const unsigned local_id_dwords = cs_prog_data->local_invocation_id_regs * 8;
- const unsigned push_constant_data_size =
- (local_id_dwords + prog_data->nr_params) * 4;
- const unsigned reg_aligned_constant_size = ALIGN(push_constant_data_size, 32);
- const unsigned param_aligned_count =
- reg_aligned_constant_size / sizeof(uint32_t);
-
/* If we don't actually have any push constants, bail. */
- if (reg_aligned_constant_size == 0)
+ if (cs_prog_data->push.total.size == 0)
return (struct anv_state) { .offset = 0 };
- const unsigned total_push_constants_size =
- reg_aligned_constant_size * cs_prog_data->threads;
const unsigned push_constant_alignment =
cmd_buffer->device->info.gen < 8 ? 32 : 64;
const unsigned aligned_total_push_constants_size =
- ALIGN(total_push_constants_size, push_constant_alignment);
+ ALIGN(cs_prog_data->push.total.size, push_constant_alignment);
struct anv_state state =
anv_cmd_buffer_alloc_dynamic_state(cmd_buffer,
aligned_total_push_constants_size,
@@ -1090,21 +1081,36 @@ anv_cmd_buffer_cs_push_constants(struct anv_cmd_buffer *cmd_buffer)
/* Walk through the param array and fill the buffer with data */
uint32_t *u32_map = state.map;
- brw_cs_fill_local_id_payload(cs_prog_data, u32_map, cs_prog_data->threads,
- reg_aligned_constant_size);
-
- /* Setup uniform data for the first thread */
- for (unsigned i = 0; i < prog_data->nr_params; i++) {
- uint32_t offset = (uintptr_t)prog_data->param[i];
- u32_map[local_id_dwords + i] = *(uint32_t *)((uint8_t *)data + offset);
+ if (cs_prog_data->push.cross_thread.size > 0) {
+ assert(cs_prog_data->thread_local_id_index < 0 ||
+ cs_prog_data->thread_local_id_index >=
+ cs_prog_data->push.cross_thread.dwords);
+ for (unsigned i = 0;
+ i < cs_prog_data->push.cross_thread.dwords;
+ i++) {
+ uint32_t offset = (uintptr_t)prog_data->param[i];
+ u32_map[i] = *(uint32_t *)((uint8_t *)data + offset);
+ }
}
- /* Copy uniform data from the first thread to every other thread */
- const size_t uniform_data_size = prog_data->nr_params * sizeof(uint32_t);
- for (unsigned t = 1; t < cs_prog_data->threads; t++) {
- memcpy(&u32_map[t * param_aligned_count + local_id_dwords],
- &u32_map[local_id_dwords],
- uniform_data_size);
+ if (cs_prog_data->push.per_thread.size > 0) {
+ brw_cs_fill_local_id_payload(cs_prog_data, u32_map, cs_prog_data->threads,
+ cs_prog_data->push.per_thread.size);
+ for (unsigned t = 0; t < cs_prog_data->threads; t++) {
+ unsigned dst =
+ 8 * (cs_prog_data->push.per_thread.regs * t +
+ cs_prog_data->push.cross_thread.regs +
+ cs_prog_data->local_invocation_id_regs);
+ unsigned src = cs_prog_data->push.cross_thread.dwords;
+ for ( ; src < prog_data->nr_params; src++, dst++) {
+ if (src != cs_prog_data->thread_local_id_index) {
+ uint32_t offset = (uintptr_t)prog_data->param[src];
+ u32_map[dst] = *(uint32_t *)((uint8_t *)data + offset);
+ } else {
+ u32_map[dst] = t * cs_prog_data->simd_size;
+ }
+ }
+ }
}
if (!cmd_buffer->device->info.has_llc)
diff --git a/src/intel/vulkan/gen7_cmd_buffer.c b/src/intel/vulkan/gen7_cmd_buffer.c
index 40ab008..478122b 100644
--- a/src/intel/vulkan/gen7_cmd_buffer.c
+++ b/src/intel/vulkan/gen7_cmd_buffer.c
@@ -234,12 +234,6 @@ flush_compute_descriptor_set(struct anv_cmd_buffer *cmd_buffer)
const struct brw_cs_prog_data *cs_prog_data = get_cs_prog_data(pipeline);
const struct brw_stage_prog_data *prog_data = &cs_prog_data->base;
- unsigned local_id_dwords = cs_prog_data->local_invocation_id_regs * 8;
- unsigned push_constant_data_size =
- (prog_data->nr_params + local_id_dwords) * 4;
- unsigned reg_aligned_constant_size = ALIGN(push_constant_data_size, 32);
- unsigned push_constant_regs = reg_aligned_constant_size / 32;
-
if (push_state.alloc_size) {
anv_batch_emit(&cmd_buffer->batch, GENX(MEDIA_CURBE_LOAD), curbe) {
curbe.CURBETotalDataLength = push_state.alloc_size;
@@ -264,8 +258,11 @@ flush_compute_descriptor_set(struct anv_cmd_buffer *cmd_buffer)
.BindingTablePointer = surfaces.offset,
.SamplerStatePointer = samplers.offset,
.ConstantURBEntryReadLength =
- push_constant_regs,
-#if !GEN_IS_HASWELL
+ cs_prog_data->push.per_thread.regs,
+#if GEN_IS_HASWELL
+ .CrossThreadConstantDataReadLength =
+ cs_prog_data->push.cross_thread.regs,
+#else
.ConstantURBEntryReadOffset = 0,
#endif
.BarrierEnable = cs_prog_data->uses_barrier,
diff --git a/src/intel/vulkan/gen8_cmd_buffer.c b/src/intel/vulkan/gen8_cmd_buffer.c
index e139e8a..1fdc7d2 100644
--- a/src/intel/vulkan/gen8_cmd_buffer.c
+++ b/src/intel/vulkan/gen8_cmd_buffer.c
@@ -319,12 +319,6 @@ flush_compute_descriptor_set(struct anv_cmd_buffer *cmd_buffer)
const struct brw_cs_prog_data *cs_prog_data = get_cs_prog_data(pipeline);
const struct brw_stage_prog_data *prog_data = &cs_prog_data->base;
- unsigned local_id_dwords = cs_prog_data->local_invocation_id_regs * 8;
- unsigned push_constant_data_size =
- (prog_data->nr_params + local_id_dwords) * 4;
- unsigned reg_aligned_constant_size = ALIGN(push_constant_data_size, 32);
- unsigned push_constant_regs = reg_aligned_constant_size / 32;
-
if (push_state.alloc_size) {
anv_batch_emit(&cmd_buffer->batch, GENX(MEDIA_CURBE_LOAD), curbe) {
curbe.CURBETotalDataLength = push_state.alloc_size;
@@ -351,12 +345,15 @@ flush_compute_descriptor_set(struct anv_cmd_buffer *cmd_buffer)
.BindingTableEntryCount = 0,
.SamplerStatePointer = samplers.offset,
.SamplerCount = 0,
- .ConstantIndirectURBEntryReadLength = push_constant_regs,
+ .ConstantIndirectURBEntryReadLength =
+ cs_prog_data->push.per_thread.regs,
.ConstantURBEntryReadOffset = 0,
.BarrierEnable = cs_prog_data->uses_barrier,
.SharedLocalMemorySize = slm_size,
.NumberofThreadsinGPGPUThreadGroup =
- cs_prog_data->threads);
+ cs_prog_data->threads,
+ .CrossThreadConstantDataReadLength =
+ cs_prog_data->push.cross_thread.regs);
uint32_t size = GENX(INTERFACE_DESCRIPTOR_DATA_length) * sizeof(uint32_t);
anv_batch_emit(&cmd_buffer->batch,
diff --git a/src/intel/vulkan/genX_pipeline.c b/src/intel/vulkan/genX_pipeline.c
index 1776577..458e80c 100644
--- a/src/intel/vulkan/genX_pipeline.c
+++ b/src/intel/vulkan/genX_pipeline.c
@@ -87,13 +87,6 @@ genX(compute_pipeline_create)(
anv_setup_pipeline_l3_config(pipeline);
const struct brw_cs_prog_data *cs_prog_data = get_cs_prog_data(pipeline);
- const struct brw_stage_prog_data *prog_data = &cs_prog_data->base;
-
- unsigned local_id_dwords = cs_prog_data->local_invocation_id_regs * 8;
- unsigned push_constant_data_size =
- (prog_data->nr_params + local_id_dwords) * 4;
- unsigned reg_aligned_constant_size = ALIGN(push_constant_data_size, 32);
- unsigned push_constant_regs = reg_aligned_constant_size / 32;
uint32_t group_size = cs_prog_data->local_size[0] *
cs_prog_data->local_size[1] * cs_prog_data->local_size[2];
@@ -105,7 +98,8 @@ genX(compute_pipeline_create)(
pipeline->cs_right_mask = ~0u >> (32 - cs_prog_data->simd_size);
const uint32_t vfe_curbe_allocation =
- push_constant_regs * cs_prog_data->threads;
+ ALIGN(cs_prog_data->push.per_thread.regs * cs_prog_data->threads +
+ cs_prog_data->push.cross_thread.regs, 2);
anv_batch_emit(&pipeline->batch, GENX(MEDIA_VFE_STATE), vfe) {
vfe.ScratchSpaceBasePointer = pipeline->scratch_start[MESA_SHADER_COMPUTE];
--
2.8.1
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