[Mesa-dev] [PATCH 2/2] anv: add support for VK_EXT_inline_uniform_block
Bas Nieuwenhuizen
bas at basnieuwenhuizen.nl
Sun Sep 16 20:57:52 UTC 2018
On Tue, Sep 11, 2018 at 10:23 PM Lionel Landwerlin
<lionel.g.landwerlin at intel.com> wrote:
>
> This new extension adds an implicitly allocated block of uniforms into
> the descriptors sets through a new descriptor type.
>
> We implement this by having a single BO in the descriptor set pool
> from which we source uniforms.
>
> Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin at intel.com>
> ---
> src/intel/vulkan/anv_cmd_buffer.c | 3 +
> src/intel/vulkan/anv_descriptor_set.c | 238 +++++++++++++++++-
> src/intel/vulkan/anv_device.c | 22 ++
> src/intel/vulkan/anv_extensions.py | 1 +
> .../vulkan/anv_nir_apply_pipeline_layout.c | 52 ++++
> src/intel/vulkan/anv_private.h | 33 +++
> src/intel/vulkan/genX_cmd_buffer.c | 32 ++-
> 7 files changed, 367 insertions(+), 14 deletions(-)
>
> diff --git a/src/intel/vulkan/anv_cmd_buffer.c b/src/intel/vulkan/anv_cmd_buffer.c
> index 8ef71b0ed9c..b14be94f470 100644
> --- a/src/intel/vulkan/anv_cmd_buffer.c
> +++ b/src/intel/vulkan/anv_cmd_buffer.c
> @@ -651,6 +651,7 @@ anv_isl_format_for_descriptor_type(VkDescriptorType type)
> switch (type) {
> case VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER:
> case VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER_DYNAMIC:
> + case VK_DESCRIPTOR_TYPE_INLINE_UNIFORM_BLOCK_EXT:
> return ISL_FORMAT_R32G32B32A32_FLOAT;
>
> case VK_DESCRIPTOR_TYPE_STORAGE_BUFFER:
> @@ -1039,6 +1040,8 @@ void anv_CmdPushDescriptorSetKHR(
> }
> break;
>
> + case VK_DESCRIPTOR_TYPE_INLINE_UNIFORM_BLOCK_EXT:
> + unreachable("Invalid descriptor type for push descriptors");
> default:
> break;
> }
> diff --git a/src/intel/vulkan/anv_descriptor_set.c b/src/intel/vulkan/anv_descriptor_set.c
> index 3439f828900..2e5f2a1f288 100644
> --- a/src/intel/vulkan/anv_descriptor_set.c
> +++ b/src/intel/vulkan/anv_descriptor_set.c
> @@ -26,8 +26,10 @@
> #include <string.h>
> #include <unistd.h>
> #include <fcntl.h>
> +#include <sys/mman.h>
>
> #include "util/mesa-sha1.h"
> +#include "vk_util.h"
>
> #include "anv_private.h"
>
> @@ -40,7 +42,8 @@ void anv_GetDescriptorSetLayoutSupport(
> const VkDescriptorSetLayoutCreateInfo* pCreateInfo,
> VkDescriptorSetLayoutSupport* pSupport)
> {
> - uint32_t surface_count[MESA_SHADER_STAGES] = { 0, };
> + int16_t surface_count[MESA_SHADER_STAGES] = { 0, };
> + int16_t inline_surface_indexes[MESA_SHADER_STAGES] = { -1, };
>
> for (uint32_t b = 0; b < pCreateInfo->bindingCount; b++) {
> const VkDescriptorSetLayoutBinding *binding = &pCreateInfo->pBindings[b];
> @@ -50,6 +53,15 @@ void anv_GetDescriptorSetLayoutSupport(
> /* There is no real limit on samplers */
> break;
>
> + case VK_DESCRIPTOR_TYPE_INLINE_UNIFORM_BLOCK_EXT:
> + anv_foreach_stage(s, binding->stageFlags) {
> + if (inline_surface_indexes[s] < 0) {
> + inline_surface_indexes[s] = surface_count[s];
> + surface_count[s] += 1;
> + }
> + }
> + break;
> +
> case VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER:
> if (binding->pImmutableSamplers) {
> for (uint32_t i = 0; i < binding->descriptorCount; i++) {
> @@ -118,6 +130,9 @@ VkResult anv_CreateDescriptorSetLayout(
> memset(set_layout, 0, sizeof(*set_layout));
> set_layout->ref_cnt = 1;
> set_layout->binding_count = max_binding + 1;
> + set_layout->inline_blocks_descriptor_index = -1;
> + memset(set_layout->inline_blocks_surface_indexes,
> + -1, sizeof(set_layout->inline_blocks_surface_indexes));
>
> for (uint32_t b = 0; b <= max_binding; b++) {
> /* Initialize all binding_layout entries to -1 */
> @@ -159,9 +174,24 @@ VkResult anv_CreateDescriptorSetLayout(
> #ifndef NDEBUG
> set_layout->binding[b].type = binding->descriptorType;
> #endif
> - set_layout->binding[b].array_size = binding->descriptorCount;
> - set_layout->binding[b].descriptor_index = set_layout->size;
> - set_layout->size += binding->descriptorCount;
> +
> + if (binding->descriptorType == VK_DESCRIPTOR_TYPE_INLINE_UNIFORM_BLOCK_EXT) {
> + /* We only a single descriptor entry for all the inline uniforms. */
> + set_layout->binding[b].array_size = 1;
> + if (set_layout->inline_blocks_descriptor_index < 0) {
> + set_layout->binding[b].descriptor_index =
> + set_layout->inline_blocks_descriptor_index =
> + set_layout->size;
> + set_layout->size += 1;
> + } else {
> + set_layout->binding[b].descriptor_index =
> + set_layout->inline_blocks_descriptor_index;
> + }
> + } else {
> + set_layout->binding[b].array_size = binding->descriptorCount;
> + set_layout->binding[b].descriptor_index = set_layout->size;
> + set_layout->size += binding->descriptorCount;
> + }
>
> switch (binding->descriptorType) {
> case VK_DESCRIPTOR_TYPE_SAMPLER:
> @@ -176,6 +206,24 @@ VkResult anv_CreateDescriptorSetLayout(
> }
>
> switch (binding->descriptorType) {
> + case VK_DESCRIPTOR_TYPE_INLINE_UNIFORM_BLOCK_EXT:
> + set_layout->binding[b].inline_block_offset = set_layout->inline_blocks_size;
> + set_layout->binding[b].inline_block_length = binding->descriptorCount;
> + set_layout->inline_blocks_size += binding->descriptorCount;
> +
> + anv_foreach_stage(s, binding->stageFlags) {
> + if (set_layout->inline_blocks_surface_indexes[s] < 0) {
> + set_layout->binding[b].stage[s].surface_index =
> + set_layout->inline_blocks_surface_indexes[s] =
> + surface_count[s];
> + surface_count[s] += 1;
> + } else {
> + set_layout->binding[b].stage[s].surface_index =
> + set_layout->inline_blocks_surface_indexes[s];
> + }
> + }
> + break;
> +
> case VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER:
> case VK_DESCRIPTOR_TYPE_STORAGE_BUFFER:
> case VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER_DYNAMIC:
> @@ -235,6 +283,12 @@ VkResult anv_CreateDescriptorSetLayout(
> set_layout->shader_stages |= binding->stageFlags;
> }
>
> + /* Align inline uniforms total size to 32 because we source the allocation
> + * from a single BO in the descriptor set pool and we want the alignment to
> + * match the push constant alignment constraint.
> + */
> + set_layout->inline_blocks_size = ALIGN(set_layout->inline_blocks_size, 32);
> +
> set_layout->buffer_count = buffer_count;
> set_layout->dynamic_offset_count = dynamic_offset_count;
>
> @@ -405,21 +459,45 @@ VkResult anv_CreateDescriptorPool(
> ANV_FROM_HANDLE(anv_device, device, _device);
> struct anv_descriptor_pool *pool;
>
> + vk_foreach_struct(ext, pCreateInfo->pNext) {
> + switch (ext->sType) {
> + case VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_INLINE_UNIFORM_BLOCK_CREATE_INFO_EXT:
> + /* Our driver doesn't need to know about this as we use a single
> + * binding table entry per stage if one of more inline descriptor
> + * blocks are used.
> + */
> + break;
> +
> + default:
> + anv_debug_ignored_stype(ext->sType);
> + break;
> + }
> + }
> +
> uint32_t descriptor_count = 0;
> uint32_t buffer_count = 0;
> + uint32_t inline_blocks_size = 0;
> for (uint32_t i = 0; i < pCreateInfo->poolSizeCount; i++) {
> switch (pCreateInfo->pPoolSizes[i].type) {
> + case VK_DESCRIPTOR_TYPE_INLINE_UNIFORM_BLOCK_EXT:
> + inline_blocks_size += pCreateInfo->pPoolSizes[i].descriptorCount;
> + break;
> case VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER:
> case VK_DESCRIPTOR_TYPE_STORAGE_BUFFER:
> case VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER_DYNAMIC:
> case VK_DESCRIPTOR_TYPE_STORAGE_BUFFER_DYNAMIC:
> buffer_count += pCreateInfo->pPoolSizes[i].descriptorCount;
> + /* Fallthrough */
> default:
> descriptor_count += pCreateInfo->pPoolSizes[i].descriptorCount;
> break;
> }
> }
>
> + /* We'll need one more descriptor for inline uniforms. */
> + if (inline_blocks_size > 0)
> + descriptor_count += MIN2(pCreateInfo->maxSets, inline_blocks_size / 4);
> +
> const size_t pool_size =
> pCreateInfo->maxSets * sizeof(struct anv_descriptor_set) +
> descriptor_count * sizeof(struct anv_descriptor) +
> @@ -435,6 +513,34 @@ VkResult anv_CreateDescriptorPool(
> pool->next_set = 0;
> pool->free_set_list = EMPTY;
>
> + pool->inline_blocks_size = inline_blocks_size;
> + pool->next_block = 0;
> + pool->free_block_list = EMPTY;
> +
> + pool->inline_blocks_bo = NULL;
> + if (pool->inline_blocks_size > 0) {
> + struct anv_physical_device *pdevice = &device->instance->physicalDevice;
> + uint64_t bo_flags =
> + (pdevice->supports_48bit_addresses ? EXEC_OBJECT_SUPPORTS_48B_ADDRESS : 0) |
> + (pdevice->has_exec_async ? EXEC_OBJECT_ASYNC : 0) |
> + (pdevice->use_softpin ? EXEC_OBJECT_PINNED : 0);
> +
> + VkResult result = anv_bo_cache_alloc(device, &device->bo_cache,
> + pool->inline_blocks_size,
> + bo_flags,
> + &pool->inline_blocks_bo);
> + if (result != VK_SUCCESS)
> + goto fail_iubo_alloc;
> +
> + uint32_t gem_flags = !device->info.has_llc ? I915_MMAP_WC : 0;
> + void *map = anv_gem_mmap(device, pool->inline_blocks_bo->gem_handle,
> + 0, pool->inline_blocks_bo->size, gem_flags);
> + if (map == MAP_FAILED)
> + goto fail_iubo_mmap;
> +
> + pool->inline_blocks_bo->map = map;
> + }
> +
> anv_state_stream_init(&pool->surface_state_stream,
> &device->surface_state_pool, 4096);
> pool->surface_state_free_list = NULL;
> @@ -442,6 +548,12 @@ VkResult anv_CreateDescriptorPool(
> *pDescriptorPool = anv_descriptor_pool_to_handle(pool);
>
> return VK_SUCCESS;
> +
> +fail_iubo_mmap:
> + anv_bo_cache_release(device, &device->bo_cache, pool->inline_blocks_bo);
> +fail_iubo_alloc:
> + vk_free2(&device->alloc, pAllocator, pool);
> + return vk_error(VK_ERROR_OUT_OF_HOST_MEMORY);
> }
>
> void anv_DestroyDescriptorPool(
> @@ -455,6 +567,8 @@ void anv_DestroyDescriptorPool(
> if (!pool)
> return;
>
> + if (pool->inline_blocks_bo)
> + anv_bo_cache_release(device, &device->bo_cache, pool->inline_blocks_bo);
> anv_state_stream_finish(&pool->surface_state_stream);
> vk_free2(&device->alloc, pAllocator, pool);
> }
> @@ -469,6 +583,8 @@ VkResult anv_ResetDescriptorPool(
>
> pool->next_set = 0;
> pool->free_set_list = EMPTY;
> + pool->next_block = 0;
> + pool->free_block_list = EMPTY;
> anv_state_stream_finish(&pool->surface_state_stream);
> anv_state_stream_init(&pool->surface_state_stream,
> &device->surface_state_pool, 4096);
> @@ -496,6 +612,36 @@ struct surface_state_free_list_entry {
> struct anv_state state;
> };
>
> +static struct anv_descriptor_set *
> +anv_descriptor_inline_block_alloc(struct anv_descriptor_pool *pool,
> + struct anv_descriptor_set_layout *layout,
> + struct anv_descriptor_set *set)
> +{
> + if (layout->inline_blocks_size == 0) {
> + set->inline_blocks = NULL;
> + return set;
> + }
> +
> + if (layout->inline_blocks_size <= pool->inline_blocks_size - pool->next_block) {
> + set->inline_blocks = pool->inline_blocks_bo->map + pool->next_block;
> + pool->next_block += layout->inline_blocks_size;
> + return set;
> + }
> +
> + struct pool_free_list_entry *entry;
> + uint32_t *link = &pool->free_block_list;
> + for (uint32_t f = pool->free_block_list; f != EMPTY; f = entry->next) {
> + entry = (struct pool_free_list_entry *) (pool->inline_blocks_bo->map + f);
> + if (layout->inline_blocks_size <= entry->size) {
> + *link = entry->next;
> + set->inline_blocks = entry;
> + return set;
> + }
> + }
> +
> + return NULL;
> +}
> +
> static struct anv_descriptor_set *
> anv_descriptor_alloc(struct anv_descriptor_pool *pool,
> struct anv_descriptor_set_layout *layout,
> @@ -504,8 +650,10 @@ anv_descriptor_alloc(struct anv_descriptor_pool *pool,
> struct anv_descriptor_set *set = NULL;
>
> if (size <= pool->size - pool->next_set) {
> - set = (struct anv_descriptor_set *) (pool->data + pool->next_set);
> - pool->next_set += size;
> + set = anv_descriptor_inline_block_alloc(pool, layout,
> + (struct anv_descriptor_set *) (pool->data + pool->next_set));
> + if (set)
> + pool->next_set += size;
> return set;
> }
>
> @@ -515,8 +663,10 @@ anv_descriptor_alloc(struct anv_descriptor_pool *pool,
> entry = (struct pool_free_list_entry *) (pool->data + f);
> if (size <= entry->size) {
> uint32_t next = entry->next;
> - set = (struct anv_descriptor_set *) entry;
> - *link = next;
> + set = anv_descriptor_inline_block_alloc(pool, layout,
> + (struct anv_descriptor_set *) entry);
> + if (set)
> + *link = next;
> return set;
> }
> link = &entry->next;
> @@ -573,6 +723,18 @@ anv_descriptor_set_create(struct anv_device *device,
> desc += layout->binding[b].array_size;
> }
>
> + /* Also fill the inline uniforms blocks if needed. */
> + if (layout->inline_blocks_descriptor_index >= 0) {
> + set->descriptors[layout->inline_blocks_descriptor_index] = (struct anv_descriptor) {
> + .type = VK_DESCRIPTOR_TYPE_INLINE_UNIFORM_BLOCK_EXT,
> + .inline_address = (struct anv_address) {
> + .bo = pool->inline_blocks_bo,
> + .offset = set->inline_blocks - pool->inline_blocks_bo->map,
> + },
> + .inline_range = layout->inline_blocks_size,
> + };
> + }
> +
> /* Allocate surface state for the buffer views. */
> for (uint32_t b = 0; b < layout->buffer_count; b++) {
> struct surface_state_free_list_entry *entry =
> @@ -600,8 +762,6 @@ anv_descriptor_set_destroy(struct anv_device *device,
> struct anv_descriptor_pool *pool,
> struct anv_descriptor_set *set)
> {
> - anv_descriptor_set_layout_unref(device, set->layout);
> -
> /* Put the buffer view surface state back on the free list. */
> for (uint32_t b = 0; b < set->buffer_count; b++) {
> struct surface_state_free_list_entry *entry =
> @@ -611,7 +771,22 @@ anv_descriptor_set_destroy(struct anv_device *device,
> pool->surface_state_free_list = entry;
> }
>
> - /* Put the descriptor set allocation back on the free list. */
> + /* Put the inline uniform blocks back on the free list. */
> + if (set->inline_blocks) {
> + const uint32_t index = set->inline_blocks - pool->inline_blocks_bo->map;
> + if (index + set->layout->inline_blocks_size == pool->next_block) {
> + pool->next_block = index;
> + } else {
> + struct pool_free_list_entry *entry = (struct pool_free_list_entry *) set->inline_blocks;
> + entry->next = pool->free_block_list;
> + entry->size = set->layout->inline_blocks_size;
> + pool->free_block_list = (char *) entry - pool->data;
> + }
> + }
> +
> + anv_descriptor_set_layout_unref(device, set->layout);
> +
> + /* Finally, put the descriptor set allocation back on the free list. */
> const uint32_t index = (char *) set - pool->data;
> if (index + set->size == pool->next_set) {
> pool->next_set = index;
> @@ -798,6 +973,23 @@ anv_descriptor_set_write_buffer(struct anv_descriptor_set *set,
> }
> }
>
> +static void
> +anv_descriptor_set_write_inline_uniforms(struct anv_descriptor_set *set,
> + VkDescriptorType type,
> + uint32_t binding,
> + uint32_t dst_offset,
> + const void *data,
> + uint32_t data_length)
> +{
> + const struct anv_descriptor_set_binding_layout *bind_layout =
> + &set->layout->binding[binding];
> +
> + assert(type == bind_layout->type);
> +
> + memcpy(set->inline_blocks + bind_layout->inline_block_offset + dst_offset,
> + data, data_length);
> +}
> +
> void anv_UpdateDescriptorSets(
> VkDevice _device,
> uint32_t descriptorWriteCount,
> @@ -826,6 +1018,20 @@ void anv_UpdateDescriptorSets(
> }
> break;
>
> + case VK_DESCRIPTOR_TYPE_INLINE_UNIFORM_BLOCK_EXT: {
> + const VkWriteDescriptorSetInlineUniformBlockEXT *inline_ub =
> + vk_find_struct_const(write->pNext,
> + WRITE_DESCRIPTOR_SET_INLINE_UNIFORM_BLOCK_EXT);
> + assert(inline_ub);
> + anv_descriptor_set_write_inline_uniforms(set,
> + write->descriptorType,
> + write->dstBinding,
> + write->dstArrayElement,
> + inline_ub->pData,
> + inline_ub->dataSize);
> + break;
> + }
> +
> case VK_DESCRIPTOR_TYPE_UNIFORM_TEXEL_BUFFER:
> case VK_DESCRIPTOR_TYPE_STORAGE_TEXEL_BUFFER:
> for (uint32_t j = 0; j < write->descriptorCount; j++) {
> @@ -954,6 +1160,16 @@ anv_descriptor_set_write_template(struct anv_descriptor_set *set,
> }
> break;
>
> + case VK_DESCRIPTOR_TYPE_INLINE_UNIFORM_BLOCK_EXT: {
> + anv_descriptor_set_write_inline_uniforms(set,
> + entry->type,
> + entry->binding,
> + entry->array_element,
> + data + entry->offset,
> + entry->array_count);
Where in the spec did you find that the data is specified directly
instead of a VkWriteDescriptorSetInlineUniformBlockEXT struct?
> + break;
> + }
> +
> default:
> break;
> }
> diff --git a/src/intel/vulkan/anv_device.c b/src/intel/vulkan/anv_device.c
> index 1e37876eb43..5bc9f7e7e88 100644
> --- a/src/intel/vulkan/anv_device.c
> +++ b/src/intel/vulkan/anv_device.c
> @@ -942,6 +942,15 @@ void anv_GetPhysicalDeviceFeatures2(
> break;
> }
>
> + case VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_INLINE_UNIFORM_BLOCK_FEATURES_EXT: {
> + VkPhysicalDeviceInlineUniformBlockFeaturesEXT *features =
> + (VkPhysicalDeviceInlineUniformBlockFeaturesEXT *)ext;
> +
> + features->inlineUniformBlock = true;
> + features->descriptorBindingInlineUniformBlockUpdateAfterBind = false;
> + break;
> + }
> +
> default:
> anv_debug_ignored_stype(ext->sType);
> break;
> @@ -1198,6 +1207,19 @@ void anv_GetPhysicalDeviceProperties2(
> break;
> }
>
> + case VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_INLINE_UNIFORM_BLOCK_PROPERTIES_EXT: {
> + VkPhysicalDeviceInlineUniformBlockPropertiesEXT *props =
> + (VkPhysicalDeviceInlineUniformBlockPropertiesEXT *)ext;
> +
> + /* All required minimum values. */
> + props->maxInlineUniformBlockSize = MAX_INLINE_UNIFORM_BLOCK_SIZE;
> + props->maxPerStageDescriptorInlineUniformBlocks = MAX_INLINE_UNIFORM_BLOCK_DESCRIPTORS;
> + props->maxPerStageDescriptorUpdateAfterBindInlineUniformBlocks = 4;
> + props->maxDescriptorSetInlineUniformBlocks = 4;
> + props->maxDescriptorSetUpdateAfterBindInlineUniformBlocks = 4;
> + break;
> + }
> +
> default:
> anv_debug_ignored_stype(ext->sType);
> break;
> diff --git a/src/intel/vulkan/anv_extensions.py b/src/intel/vulkan/anv_extensions.py
> index 951505a854e..61803c9d7fa 100644
> --- a/src/intel/vulkan/anv_extensions.py
> +++ b/src/intel/vulkan/anv_extensions.py
> @@ -125,6 +125,7 @@ EXTENSIONS = [
> Extension('VK_EXT_vertex_attribute_divisor', 3, True),
> Extension('VK_EXT_post_depth_coverage', 1, 'device->info.gen >= 9'),
> Extension('VK_EXT_sampler_filter_minmax', 1, 'device->info.gen >= 9'),
> + Extension('VK_EXT_inline_uniform_block', 1, True),
> ]
>
> class VkVersion:
> diff --git a/src/intel/vulkan/anv_nir_apply_pipeline_layout.c b/src/intel/vulkan/anv_nir_apply_pipeline_layout.c
> index 856101cc2ff..75bf33806f9 100644
> --- a/src/intel/vulkan/anv_nir_apply_pipeline_layout.c
> +++ b/src/intel/vulkan/anv_nir_apply_pipeline_layout.c
> @@ -160,6 +160,22 @@ lower_res_index_intrinsic(nir_intrinsic_instr *intrin,
> block_index = nir_iadd(b, nir_imm_int(b, surface_index), block_index);
> }
>
> + /* We use a single binding table entry for all inline uniform blocks. That
> + * means each block is at a different offset in that entry. We can get this
> + * offset from the layout using (set, binding) but we need to add that
> + * offset into the actual load_ubo intrinsic.
> + *
> + * Here instead of just setting the block index we set a tuple
> + * (block_index, inline_block_offset) which will be replace when run into a
> + * load_ubo intrinsic (see lower_inline_uniform_block function).
> + */
> + uint32_t inline_block_offset =
> + state->layout->set[set].layout->binding[binding].inline_block_offset;
> + if (inline_block_offset != -1) {
> + block_index = nir_vec2(b, block_index,
> + nir_imm_int(b, inline_block_offset));
> + }
> +
> assert(intrin->dest.is_ssa);
> nir_ssa_def_rewrite_uses(&intrin->dest.ssa, nir_src_for_ssa(block_index));
> nir_instr_remove(&intrin->instr);
> @@ -268,6 +284,39 @@ lower_load_constant(nir_intrinsic_instr *intrin,
> nir_instr_remove(&intrin->instr);
> }
>
> +static void
> +lower_inline_uniform_block(nir_intrinsic_instr *intrin,
> + struct apply_pipeline_layout_state *state)
> +{
> + if (!intrin->src[0].ssa->parent_instr ||
> + intrin->src[0].ssa->parent_instr->type != nir_instr_type_alu)
> + return;
> +
> + nir_alu_instr *alu = nir_instr_as_alu(intrin->src[0].ssa->parent_instr);
> + if (alu->op != nir_op_vec2)
> + return;
> +
> + nir_builder *b = &state->builder;
> + b->cursor = nir_before_instr(&intrin->instr);
> +
> + nir_instr_rewrite_src(&intrin->instr, &intrin->src[0], alu->src[0].src);
> +
> + nir_const_value *const_inline_block_offset =
> + nir_src_as_const_value(alu->src[1].src);
> + assert(const_inline_block_offset);
> +
> + nir_const_value *const_offset = nir_src_as_const_value(intrin->src[1]);
> + nir_ssa_def *offset;
> + if (const_offset) {
> + offset = nir_iadd(b, nir_imm_int(b, const_offset->u32[0]),
> + nir_imm_int(b, const_inline_block_offset->u32[0]));
> + } else {
> + offset = nir_iadd(b, nir_ssa_for_src(b, intrin->src[1], 1),
> + nir_imm_int(b, const_inline_block_offset->u32[0]));
> + }
> + nir_instr_rewrite_src(&intrin->instr, &intrin->src[1], nir_src_for_ssa(offset));
> +}
> +
> static void
> lower_tex_deref(nir_tex_instr *tex, nir_tex_src_type deref_src_type,
> unsigned *base_index,
> @@ -401,6 +450,9 @@ apply_pipeline_layout_block(nir_block *block,
> case nir_intrinsic_load_constant:
> lower_load_constant(intrin, state);
> break;
> + case nir_intrinsic_load_ubo:
> + lower_inline_uniform_block(intrin, state);
> + break;
> default:
> break;
> }
> diff --git a/src/intel/vulkan/anv_private.h b/src/intel/vulkan/anv_private.h
> index 372b7c69635..cea8e5786f5 100644
> --- a/src/intel/vulkan/anv_private.h
> +++ b/src/intel/vulkan/anv_private.h
> @@ -159,6 +159,8 @@ struct gen_l3_config;
> #define MAX_DYNAMIC_BUFFERS 16
> #define MAX_IMAGES 8
> #define MAX_PUSH_DESCRIPTORS 32 /* Minimum requirement */
> +#define MAX_INLINE_UNIFORM_BLOCK_SIZE 256 /* Minimum requirement */
> +#define MAX_INLINE_UNIFORM_BLOCK_DESCRIPTORS 4 /* Minimum requirement */
>
> /* The kernel relocation API has a limitation of a 32-bit delta value
> * applied to the address before it is written which, in spite of it being
> @@ -1394,6 +1396,16 @@ struct anv_descriptor_set_binding_layout {
> /* Index into the descriptor set buffer views */
> int16_t buffer_index;
>
> + /* TODO/question: should we union fields a bit? inline uniform blocks have
> + * no use for array_size, buffer_index & dynamic_offset_index.
> + */
> +
> + /* Offset into the portion of data allocated for the inline uniforms. */
> + uint32_t inline_block_offset;
> +
> + /* Length of the portion of data allocated for inline uniforms */
> + uint32_t inline_block_length;
> +
> struct {
> /* Index into the binding table for the associated surface */
> int16_t surface_index;
> @@ -1428,6 +1440,15 @@ struct anv_descriptor_set_layout {
> /* Number of dynamic offsets used by this descriptor set */
> uint16_t dynamic_offset_count;
>
> + /* Index into the flattend descriptor set (-1 if unused). */
> + int16_t inline_blocks_descriptor_index;
> +
> + /* Data to allocate into the pool descriptor's inline uniforms BO */
> + uint32_t inline_blocks_size;
> +
> + /* Index into the binding table for the associated surface */
> + int16_t inline_blocks_surface_indexes[MESA_SHADER_STAGES];
> +
> /* Bindings in this descriptor set */
> struct anv_descriptor_set_binding_layout binding[0];
> };
> @@ -1464,6 +1485,11 @@ struct anv_descriptor {
> uint64_t range;
> };
>
> + struct {
> + struct anv_address inline_address;
> + uint64_t inline_range;
> + };
> +
> struct anv_buffer_view *buffer_view;
> };
> };
> @@ -1472,6 +1498,7 @@ struct anv_descriptor_set {
> struct anv_descriptor_set_layout *layout;
> uint32_t size;
> uint32_t buffer_count;
> + void *inline_blocks;
> struct anv_buffer_view *buffer_views;
> struct anv_descriptor descriptors[0];
> };
> @@ -1507,6 +1534,12 @@ struct anv_descriptor_pool {
> struct anv_state_stream surface_state_stream;
> void *surface_state_free_list;
>
> + struct anv_bo *inline_blocks_bo;
> + uint32_t inline_blocks_size;
> +
> + uint32_t free_block_list;
> + uint32_t next_block;
> +
> char data[0];
> };
>
> diff --git a/src/intel/vulkan/genX_cmd_buffer.c b/src/intel/vulkan/genX_cmd_buffer.c
> index 80bebf5a12c..5cb4c0f13af 100644
> --- a/src/intel/vulkan/genX_cmd_buffer.c
> +++ b/src/intel/vulkan/genX_cmd_buffer.c
> @@ -2146,6 +2146,19 @@ emit_binding_table(struct anv_cmd_buffer *cmd_buffer,
> desc->buffer_view->address);
> break;
>
> + case VK_DESCRIPTOR_TYPE_INLINE_UNIFORM_BLOCK_EXT: {
> + surface_state =
> + anv_state_stream_alloc(&cmd_buffer->surface_state_stream, 64, 64);
> + enum isl_format format =
> + anv_isl_format_for_descriptor_type(desc->type);
> +
> + anv_fill_buffer_surface_state(cmd_buffer->device, surface_state,
> + format, desc->inline_address,
> + desc->inline_range, 1);
> + add_surface_reloc(cmd_buffer, surface_state, desc->inline_address);
> + break;
> + }
> +
> case VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER_DYNAMIC:
> case VK_DESCRIPTOR_TYPE_STORAGE_BUFFER_DYNAMIC: {
> /* Compute the offset within the buffer */
> @@ -2445,14 +2458,15 @@ cmd_buffer_flush_push_constants(struct anv_cmd_buffer *cmd_buffer,
> const struct anv_descriptor *desc =
> anv_descriptor_for_binding(&gfx_state->base, binding);
>
> - if (desc->type == VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER) {
> + switch (desc->type) {
> + case VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER:
> read_len = MIN2(range->length,
> DIV_ROUND_UP(desc->buffer_view->range, 32) - range->start);
> read_addr = anv_address_add(desc->buffer_view->address,
> range->start * 32);
> - } else {
> - assert(desc->type == VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER_DYNAMIC);
> + break;
>
> + case VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER_DYNAMIC: {
> uint32_t dynamic_offset =
> dynamic_offset_for_binding(&gfx_state->base, binding);
> uint32_t buf_offset =
> @@ -2464,6 +2478,18 @@ cmd_buffer_flush_push_constants(struct anv_cmd_buffer *cmd_buffer,
> DIV_ROUND_UP(buf_range, 32) - range->start);
> read_addr = anv_address_add(desc->buffer->address,
> buf_offset + range->start * 32);
> + break;
> + }
> +
> + case VK_DESCRIPTOR_TYPE_INLINE_UNIFORM_BLOCK_EXT:
> + read_len = MIN2(range->length,
> + DIV_ROUND_UP(desc->inline_range, 32) - range->start);
> + read_addr = anv_address_add(desc->inline_address,
> + range->start * 32);
> + break;
> +
> + default:
> + unreachable("Invalid descriptor");
> }
> }
>
> --
> 2.19.0.rc1
>
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