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godot/drivers/d3d12/rendering_device_driver_d3d12.h

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/**************************************************************************/
/* rendering_device_driver_d3d12.h */
/**************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* 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 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. */
/**************************************************************************/
#ifndef RENDERING_DEVICE_DRIVER_D3D12_H
#define RENDERING_DEVICE_DRIVER_D3D12_H
#include "core/templates/hash_map.h"
#include "core/templates/paged_allocator.h"
#include "core/templates/self_list.h"
#include "servers/rendering/rendering_device_driver.h"
#ifndef _MSC_VER
// Match current version used by MinGW, MSVC and Direct3D 12 headers use 500.
#define __REQUIRED_RPCNDR_H_VERSION__ 475
#endif
#if defined(__GNUC__) && !defined(__clang__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wnon-virtual-dtor"
#pragma GCC diagnostic ignored "-Wshadow"
#pragma GCC diagnostic ignored "-Wswitch"
#pragma GCC diagnostic ignored "-Wmissing-field-initializers"
#pragma GCC diagnostic ignored "-Wimplicit-fallthrough"
#elif defined(__clang__)
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wnon-virtual-dtor"
#pragma clang diagnostic ignored "-Wstring-plus-int"
#pragma clang diagnostic ignored "-Wswitch"
#pragma clang diagnostic ignored "-Wmissing-field-initializers"
#pragma clang diagnostic ignored "-Wimplicit-fallthrough"
#endif
#include "d3dx12.h"
#include <dxgi1_6.h>
#define D3D12MA_D3D12_HEADERS_ALREADY_INCLUDED
#include "D3D12MemAlloc.h"
#include <wrl/client.h>
#if defined(_MSC_VER) && defined(MemoryBarrier)
// Annoying define from winnt.h. Reintroduced by some of the headers above.
#undef MemoryBarrier
#endif
#if defined(__GNUC__) && !defined(__clang__)
#pragma GCC diagnostic pop
#elif defined(__clang__)
#pragma clang diagnostic pop
#endif
using Microsoft::WRL::ComPtr;
#define D3D12_BITCODE_OFFSETS_NUM_STAGES 3
#ifdef DEV_ENABLED
//#define DEBUG_COUNT_BARRIERS
#define CUSTOM_INFO_QUEUE_ENABLED 0
#endif
class RenderingContextDriverD3D12;
// Design principles:
// - D3D12 structs are zero-initialized and fields not requiring a non-zero value are omitted (except in cases where expresivity reasons apply).
class RenderingDeviceDriverD3D12 : public RenderingDeviceDriver {
/*****************/
/**** GENERIC ****/
/*****************/
struct D3D12Format {
DXGI_FORMAT family = DXGI_FORMAT_UNKNOWN;
DXGI_FORMAT general_format = DXGI_FORMAT_UNKNOWN;
UINT swizzle = D3D12_DEFAULT_SHADER_4_COMPONENT_MAPPING;
DXGI_FORMAT dsv_format = DXGI_FORMAT_UNKNOWN;
};
static const D3D12Format RD_TO_D3D12_FORMAT[RDD::DATA_FORMAT_MAX];
struct DeviceLimits {
uint64_t max_srvs_per_shader_stage = 0;
uint64_t max_cbvs_per_shader_stage = 0;
uint64_t max_samplers_across_all_stages = 0;
uint64_t max_uavs_across_all_stages = 0;
uint64_t timestamp_frequency = 0;
};
struct SubgroupCapabilities {
uint32_t size = 0;
bool wave_ops_supported = false;
uint32_t supported_stages_flags_rd() const;
uint32_t supported_operations_flags_rd() const;
};
struct VRSCapabilities {
bool draw_call_supported = false; // We can specify our fragment rate on a draw call level.
bool primitive_supported = false; // We can specify our fragment rate on each drawcall.
bool primitive_in_multiviewport = false;
bool ss_image_supported = false; // We can provide a density map attachment on our framebuffer.
uint32_t ss_image_tile_size = 0;
uint32_t ss_max_fragment_size = 0;
bool additional_rates_supported = false;
};
struct ShaderCapabilities {
D3D_SHADER_MODEL shader_model = (D3D_SHADER_MODEL)0;
bool native_16bit_ops = false;
};
struct StorageBufferCapabilities {
bool storage_buffer_16_bit_access_is_supported = false;
};
struct FormatCapabilities {
bool relaxed_casting_supported = false;
};
struct BarrierCapabilities {
bool enhanced_barriers_supported = false;
};
struct MiscFeaturesSupport {
bool depth_bounds_supported = false;
};
RenderingContextDriverD3D12 *context_driver = nullptr;
RenderingContextDriver::Device context_device;
ComPtr<IDXGIAdapter> adapter;
DXGI_ADAPTER_DESC adapter_desc;
ComPtr<ID3D12Device> device;
DeviceLimits device_limits;
RDD::Capabilities device_capabilities;
uint32_t feature_level = 0; // Major * 10 + minor.
SubgroupCapabilities subgroup_capabilities;
RDD::MultiviewCapabilities multiview_capabilities;
VRSCapabilities vrs_capabilities;
ShaderCapabilities shader_capabilities;
StorageBufferCapabilities storage_buffer_capabilities;
FormatCapabilities format_capabilities;
BarrierCapabilities barrier_capabilities;
MiscFeaturesSupport misc_features_support;
String pipeline_cache_id;
class DescriptorsHeap {
D3D12_DESCRIPTOR_HEAP_DESC desc = {};
ComPtr<ID3D12DescriptorHeap> heap;
uint32_t handle_size = 0;
public:
class Walker { // Texas Ranger.
friend class DescriptorsHeap;
uint32_t handle_size = 0;
uint32_t handle_count = 0;
D3D12_CPU_DESCRIPTOR_HANDLE first_cpu_handle = {};
D3D12_GPU_DESCRIPTOR_HANDLE first_gpu_handle = {};
uint32_t handle_index = 0;
public:
D3D12_CPU_DESCRIPTOR_HANDLE get_curr_cpu_handle();
D3D12_GPU_DESCRIPTOR_HANDLE get_curr_gpu_handle();
_FORCE_INLINE_ void rewind() { handle_index = 0; }
void advance(uint32_t p_count = 1);
uint32_t get_current_handle_index() const { return handle_index; }
uint32_t get_free_handles() { return handle_count - handle_index; }
bool is_at_eof() { return handle_index == handle_count; }
};
Error allocate(ID3D12Device *m_device, D3D12_DESCRIPTOR_HEAP_TYPE m_type, uint32_t m_descriptor_count, bool p_for_gpu);
uint32_t get_descriptor_count() const { return desc.NumDescriptors; }
ID3D12DescriptorHeap *get_heap() const { return heap.Get(); }
Walker make_walker() const;
};
struct {
ComPtr<ID3D12CommandSignature> draw;
ComPtr<ID3D12CommandSignature> draw_indexed;
ComPtr<ID3D12CommandSignature> dispatch;
} indirect_cmd_signatures;
static void STDMETHODCALLTYPE _debug_message_func(D3D12_MESSAGE_CATEGORY p_category, D3D12_MESSAGE_SEVERITY p_severity, D3D12_MESSAGE_ID p_id, LPCSTR p_description, void *p_context);
void _set_object_name(ID3D12Object *p_object, String p_object_name);
Error _initialize_device();
Error _check_capabilities();
Error _get_device_limits();
Error _initialize_allocator();
Error _initialize_frames(uint32_t p_frame_count);
Error _initialize_command_signatures();
public:
Error initialize(uint32_t p_device_index, uint32_t p_frame_count) override final;
private:
/****************/
/**** MEMORY ****/
/****************/
ComPtr<D3D12MA::Allocator> allocator;
#define USE_SMALL_ALLOCS_POOL // Disabled by now; seems not to be beneficial as it is in Vulkan.
#ifdef USE_SMALL_ALLOCS_POOL
union AllocPoolKey {
struct {
D3D12_HEAP_TYPE heap_type;
D3D12_HEAP_FLAGS heap_flags;
};
uint64_t key = 0;
};
HashMap<uint64_t, ComPtr<D3D12MA::Pool>> small_allocs_pools;
D3D12MA::Pool *_find_or_create_small_allocs_pool(D3D12_HEAP_TYPE p_heap_type, D3D12_HEAP_FLAGS p_heap_flags);
#endif
/******************/
/**** RESOURCE ****/
/******************/
struct ResourceInfo {
struct States {
// As many subresources as mipmaps * layers; planes (for depth-stencil) are tracked together.
TightLocalVector<D3D12_RESOURCE_STATES> subresource_states; // Used only if not a view.
uint32_t last_batch_with_uav_barrier = 0;
};
ID3D12Resource *resource = nullptr; // Non-null even if not owned.
struct {
ComPtr<ID3D12Resource> resource;
ComPtr<D3D12MA::Allocation> allocation;
States states;
} owner_info; // All empty if the resource is not owned.
States *states_ptr = nullptr; // Own or from another if it doesn't own the D3D12 resource.
};
struct BarrierRequest {
static const uint32_t MAX_GROUPS = 4;
// Maybe this is too much data to have it locally. Benchmarking may reveal that
// cache would be used better by having a maximum of local subresource masks and beyond
// that have an allocated vector with the rest.
static const uint32_t MAX_SUBRESOURCES = 4096;
ID3D12Resource *dx_resource = nullptr;
uint8_t subres_mask_qwords = 0;
uint8_t planes = 0;
struct Group {
D3D12_RESOURCE_STATES states = {};
static_assert(MAX_SUBRESOURCES % 64 == 0);
uint64_t subres_mask[MAX_SUBRESOURCES / 64] = {};
} groups[MAX_GROUPS];
uint8_t groups_count = 0;
static const D3D12_RESOURCE_STATES DELETED_GROUP = D3D12_RESOURCE_STATES(0xFFFFFFFFU);
};
PagedAllocator<HashMapElement<ResourceInfo::States *, BarrierRequest>> res_barriers_requests_allocator;
HashMap<ResourceInfo::States *, BarrierRequest, HashMapHasherDefault, HashMapComparatorDefault<ResourceInfo::States *>, decltype(res_barriers_requests_allocator)> res_barriers_requests;
LocalVector<D3D12_RESOURCE_BARRIER> res_barriers;
uint32_t res_barriers_count = 0;
uint32_t res_barriers_batch = 0;
#ifdef DEBUG_COUNT_BARRIERS
int frame_barriers_count = 0;
int frame_barriers_batches_count = 0;
uint64_t frame_barriers_cpu_time = 0;
#endif
void _resource_transition_batch(ResourceInfo *p_resource, uint32_t p_subresource, uint32_t p_num_planes, D3D12_RESOURCE_STATES p_new_state);
void _resource_transitions_flush(ID3D12GraphicsCommandList *p_cmd_list);
/*****************/
/**** BUFFERS ****/
/*****************/
struct BufferInfo : public ResourceInfo {
DataFormat texel_format = DATA_FORMAT_MAX;
uint64_t size = 0;
struct {
bool usable_as_uav : 1;
} flags = {};
};
public:
virtual BufferID buffer_create(uint64_t p_size, BitField<BufferUsageBits> p_usage, MemoryAllocationType p_allocation_type) override final;
virtual bool buffer_set_texel_format(BufferID p_buffer, DataFormat p_format) override final;
virtual void buffer_free(BufferID p_buffer) override final;
virtual uint64_t buffer_get_allocation_size(BufferID p_buffer) override final;
virtual uint8_t *buffer_map(BufferID p_buffer) override final;
virtual void buffer_unmap(BufferID p_buffer) override final;
/*****************/
/**** TEXTURE ****/
/*****************/
private:
struct TextureInfo : public ResourceInfo {
DataFormat format = DATA_FORMAT_MAX;
CD3DX12_RESOURCE_DESC desc = {};
uint32_t base_layer = 0;
uint32_t layers = 0;
uint32_t base_mip = 0;
uint32_t mipmaps = 0;
struct {
D3D12_SHADER_RESOURCE_VIEW_DESC srv;
D3D12_UNORDERED_ACCESS_VIEW_DESC uav;
} view_descs = {};
TextureInfo *main_texture = nullptr;
UINT mapped_subresource = UINT_MAX;
SelfList<TextureInfo> pending_clear{ this };
};
SelfList<TextureInfo>::List textures_pending_clear;
HashMap<DXGI_FORMAT, uint32_t> format_sample_counts_mask_cache;
uint32_t _find_max_common_supported_sample_count(VectorView<DXGI_FORMAT> p_formats);
UINT _compute_component_mapping(const TextureView &p_view);
UINT _compute_plane_slice(DataFormat p_format, BitField<TextureAspectBits> p_aspect_bits);
UINT _compute_plane_slice(DataFormat p_format, TextureAspect p_aspect);
UINT _compute_subresource_from_layers(TextureInfo *p_texture, const TextureSubresourceLayers &p_layers, uint32_t p_layer_offset);
struct CommandBufferInfo;
void _discard_texture_subresources(const TextureInfo *p_tex_info, const CommandBufferInfo *p_cmd_buf_info);
protected:
virtual bool _unordered_access_supported_by_format(DataFormat p_format);
public:
virtual TextureID texture_create(const TextureFormat &p_format, const TextureView &p_view) override final;
virtual TextureID texture_create_from_extension(uint64_t p_native_texture, TextureType p_type, DataFormat p_format, uint32_t p_array_layers, bool p_depth_stencil) override final;
virtual TextureID texture_create_shared(TextureID p_original_texture, const TextureView &p_view) override final;
virtual TextureID texture_create_shared_from_slice(TextureID p_original_texture, const TextureView &p_view, TextureSliceType p_slice_type, uint32_t p_layer, uint32_t p_layers, uint32_t p_mipmap, uint32_t p_mipmaps) override final;
virtual void texture_free(TextureID p_texture) override final;
virtual uint64_t texture_get_allocation_size(TextureID p_texture) override final;
virtual void texture_get_copyable_layout(TextureID p_texture, const TextureSubresource &p_subresource, TextureCopyableLayout *r_layout) override final;
virtual uint8_t *texture_map(TextureID p_texture, const TextureSubresource &p_subresource) override final;
virtual void texture_unmap(TextureID p_texture) override final;
virtual BitField<TextureUsageBits> texture_get_usages_supported_by_format(DataFormat p_format, bool p_cpu_readable) override final;
virtual bool texture_can_make_shared_with_format(TextureID p_texture, DataFormat p_format, bool &r_raw_reinterpretation) override final;
private:
TextureID _texture_create_shared_from_slice(TextureID p_original_texture, const TextureView &p_view, TextureSliceType p_slice_type, uint32_t p_layer, uint32_t p_layers, uint32_t p_mipmap, uint32_t p_mipmaps);
public:
/*****************/
/**** SAMPLER ****/
/*****************/
private:
LocalVector<D3D12_SAMPLER_DESC> samplers;
public:
virtual SamplerID sampler_create(const SamplerState &p_state) final override;
virtual void sampler_free(SamplerID p_sampler) final override;
virtual bool sampler_is_format_supported_for_filter(DataFormat p_format, SamplerFilter p_filter) override final;
/**********************/
/**** VERTEX ARRAY ****/
/**********************/
private:
struct VertexFormatInfo {
TightLocalVector<D3D12_INPUT_ELEMENT_DESC> input_elem_descs;
TightLocalVector<UINT> vertex_buffer_strides;
};
public:
virtual VertexFormatID vertex_format_create(VectorView<VertexAttribute> p_vertex_attribs) override final;
virtual void vertex_format_free(VertexFormatID p_vertex_format) override final;
/******************/
/**** BARRIERS ****/
/******************/
virtual void command_pipeline_barrier(
CommandBufferID p_cmd_buffer,
BitField<PipelineStageBits> p_src_stages,
BitField<PipelineStageBits> p_dst_stages,
VectorView<RDD::MemoryBarrier> p_memory_barriers,
VectorView<RDD::BufferBarrier> p_buffer_barriers,
VectorView<RDD::TextureBarrier> p_texture_barriers) override final;
private:
/****************/
/**** FENCES ****/
/****************/
struct FenceInfo {
ComPtr<ID3D12Fence> d3d_fence = nullptr;
HANDLE event_handle = nullptr;
UINT64 fence_value = 0;
};
public:
virtual FenceID fence_create() override;
virtual Error fence_wait(FenceID p_fence) override;
virtual void fence_free(FenceID p_fence) override;
private:
/********************/
/**** SEMAPHORES ****/
/********************/
struct SemaphoreInfo {
ComPtr<ID3D12Fence> d3d_fence = nullptr;
UINT64 fence_value = 0;
};
virtual SemaphoreID semaphore_create() override;
virtual void semaphore_free(SemaphoreID p_semaphore) override;
/******************/
/**** COMMANDS ****/
/******************/
// ----- QUEUE FAMILY -----
virtual CommandQueueFamilyID command_queue_family_get(BitField<CommandQueueFamilyBits> p_cmd_queue_family_bits, RenderingContextDriver::SurfaceID p_surface = 0) override;
private:
// ----- QUEUE -----
struct CommandQueueInfo {
ComPtr<ID3D12CommandQueue> d3d_queue;
};
public:
virtual CommandQueueID command_queue_create(CommandQueueFamilyID p_cmd_queue_family, bool p_identify_as_main_queue = false) override;
virtual Error command_queue_execute_and_present(CommandQueueID p_cmd_queue, VectorView<SemaphoreID> p_wait_semaphores, VectorView<CommandBufferID> p_cmd_buffers, VectorView<SemaphoreID> p_cmd_semaphores, FenceID p_cmd_fence, VectorView<SwapChainID> p_swap_chains) override;
virtual void command_queue_free(CommandQueueID p_cmd_queue) override;
private:
// ----- POOL -----
struct CommandPoolInfo {
CommandQueueFamilyID queue_family;
CommandBufferType buffer_type = COMMAND_BUFFER_TYPE_PRIMARY;
};
public:
virtual CommandPoolID command_pool_create(CommandQueueFamilyID p_cmd_queue_family, CommandBufferType p_cmd_buffer_type) override final;
virtual void command_pool_free(CommandPoolID p_cmd_pool) override final;
// ----- BUFFER -----
private:
// Belongs to RENDERING-SUBPASS, but needed here.
struct FramebufferInfo;
struct RenderPassInfo;
struct RenderPassState {
uint32_t current_subpass = UINT32_MAX;
const FramebufferInfo *fb_info = nullptr;
const RenderPassInfo *pass_info = nullptr;
CD3DX12_RECT region_rect = {};
bool region_is_all = false;
const VertexFormatInfo *vf_info = nullptr;
D3D12_VERTEX_BUFFER_VIEW vertex_buffer_views[8] = {};
uint32_t vertex_buffer_count = 0;
};
// Leveraging knowledge of actual usage and D3D12 specifics (namely, command lists from the same allocator
// can't be freely begun and ended), an allocator per list works better.
struct CommandBufferInfo {
ComPtr<ID3D12CommandAllocator> cmd_allocator;
ComPtr<ID3D12GraphicsCommandList> cmd_list;
ID3D12PipelineState *graphics_pso = nullptr;
ID3D12PipelineState *compute_pso = nullptr;
uint32_t graphics_root_signature_crc = 0;
uint32_t compute_root_signature_crc = 0;
RenderPassState render_pass_state;
bool descriptor_heaps_set = false;
};
public:
virtual CommandBufferID command_buffer_create(CommandPoolID p_cmd_pool) override final;
virtual bool command_buffer_begin(CommandBufferID p_cmd_buffer) override final;
virtual bool command_buffer_begin_secondary(CommandBufferID p_cmd_buffer, RenderPassID p_render_pass, uint32_t p_subpass, FramebufferID p_framebuffer) override final;
virtual void command_buffer_end(CommandBufferID p_cmd_buffer) override final;
virtual void command_buffer_execute_secondary(CommandBufferID p_cmd_buffer, VectorView<CommandBufferID> p_secondary_cmd_buffers) override final;
private:
/********************/
/**** SWAP CHAIN ****/
/********************/
struct SwapChain {
ComPtr<IDXGISwapChain3> d3d_swap_chain;
RenderingContextDriver::SurfaceID surface = RenderingContextDriver::SurfaceID();
UINT present_flags = 0;
UINT sync_interval = 1;
UINT creation_flags = 0;
RenderPassID render_pass;
TightLocalVector<ID3D12Resource *> render_targets;
TightLocalVector<TextureInfo> render_targets_info;
TightLocalVector<FramebufferID> framebuffers;
RDD::DataFormat data_format = DATA_FORMAT_MAX;
};
void _swap_chain_release(SwapChain *p_swap_chain);
void _swap_chain_release_buffers(SwapChain *p_swap_chain);
public:
virtual SwapChainID swap_chain_create(RenderingContextDriver::SurfaceID p_surface) override;
virtual Error swap_chain_resize(CommandQueueID p_cmd_queue, SwapChainID p_swap_chain, uint32_t p_desired_framebuffer_count) override;
virtual FramebufferID swap_chain_acquire_framebuffer(CommandQueueID p_cmd_queue, SwapChainID p_swap_chain, bool &r_resize_required) override;
virtual RenderPassID swap_chain_get_render_pass(SwapChainID p_swap_chain) override;
virtual DataFormat swap_chain_get_format(SwapChainID p_swap_chain) override;
virtual void swap_chain_free(SwapChainID p_swap_chain) override;
/*********************/
/**** FRAMEBUFFER ****/
/*********************/
private:
struct FramebufferInfo {
bool is_screen = false;
Size2i size;
TightLocalVector<uint32_t> attachments_handle_inds; // RTV heap index for color; DSV heap index for DSV.
DescriptorsHeap rtv_heap;
DescriptorsHeap dsv_heap; // Used only if not for screen and some depth-stencil attachments.
TightLocalVector<TextureID> attachments; // Color and depth-stencil. Used if not screen.
TextureID vrs_attachment;
};
D3D12_RENDER_TARGET_VIEW_DESC _make_rtv_for_texture(const TextureInfo *p_texture_info, uint32_t p_mipmap_offset, uint32_t p_layer_offset, uint32_t p_layers, bool p_add_bases = true);
D3D12_UNORDERED_ACCESS_VIEW_DESC _make_ranged_uav_for_texture(const TextureInfo *p_texture_info, uint32_t p_mipmap_offset, uint32_t p_layer_offset, uint32_t p_layers, bool p_add_bases = true);
D3D12_DEPTH_STENCIL_VIEW_DESC _make_dsv_for_texture(const TextureInfo *p_texture_info);
FramebufferID _framebuffer_create(RenderPassID p_render_pass, VectorView<TextureID> p_attachments, uint32_t p_width, uint32_t p_height, bool p_is_screen);
public:
virtual FramebufferID framebuffer_create(RenderPassID p_render_pass, VectorView<TextureID> p_attachments, uint32_t p_width, uint32_t p_height) override final;
virtual void framebuffer_free(FramebufferID p_framebuffer) override final;
/****************/
/**** SHADER ****/
/****************/
private:
static const uint32_t ROOT_SIGNATURE_SIZE = 256;
static const uint32_t PUSH_CONSTANT_SIZE = 128; // Mimicking Vulkan.
enum {
// We can only aim to set a maximum here, since depending on the shader
// there may be more or less root signature free for descriptor tables.
// Therefore, we'll have to rely on the final check at runtime, when building
// the root signature structure for a given shader.
// To be precise, these may be present or not, and their size vary statically:
// - Push constant (we'll assume this is always present to avoid reserving much
// more space for descriptor sets than needed for almost any imaginable case,
// given that most shader templates feature push constants).
// - NIR-DXIL runtime data.
MAX_UNIFORM_SETS = (ROOT_SIGNATURE_SIZE - PUSH_CONSTANT_SIZE) / sizeof(uint32_t),
};
enum RootSignatureLocationType {
RS_LOC_TYPE_RESOURCE,
RS_LOC_TYPE_SAMPLER,
};
enum ResourceClass {
RES_CLASS_INVALID,
RES_CLASS_CBV,
RES_CLASS_SRV,
RES_CLASS_UAV,
};
struct ShaderBinary {
// Version 1: Initial.
// Version 2: 64-bit vertex input mask.
// Version 3: Added SC stage mask.
static const uint32_t VERSION = 3;
// Phase 1: SPIR-V reflection, where the Vulkan/RD interface of the shader is discovered.
// Phase 2: SPIR-V to DXIL translation, where the DXIL interface is discovered, which may have gaps due to optimizations.
struct DataBinding {
// - Phase 1.
uint32_t type = 0;
uint32_t binding = 0;
uint32_t stages = 0;
uint32_t length = 0; // Size of arrays (in total elements), or ubos (in bytes * total elements).
uint32_t writable = 0;
// - Phase 2.
uint32_t res_class = 0;
uint32_t has_sampler = 0;
uint32_t dxil_stages = 0;
struct RootSignatureLocation {
uint32_t root_param_idx = UINT32_MAX; // UINT32_MAX if unused.
uint32_t range_idx = UINT32_MAX; // UINT32_MAX if unused.
};
RootSignatureLocation root_sig_locations[2]; // Index is RootSignatureLocationType.
// We need to sort these to fill the root signature locations properly.
bool operator<(const DataBinding &p_other) const {
return binding < p_other.binding;
}
};
struct SpecializationConstant {
// - Phase 1.
uint32_t type = 0;
uint32_t constant_id = 0;
union {
uint32_t int_value = 0;
float float_value;
bool bool_value;
};
uint32_t stage_flags = 0;
// - Phase 2.
uint64_t stages_bit_offsets[D3D12_BITCODE_OFFSETS_NUM_STAGES] = {};
};
struct Data {
uint64_t vertex_input_mask = 0;
uint32_t fragment_output_mask = 0;
uint32_t specialization_constants_count = 0;
uint32_t spirv_specialization_constants_ids_mask = 0;
uint32_t is_compute = 0;
uint32_t compute_local_size[3] = {};
uint32_t set_count = 0;
uint32_t push_constant_size = 0;
uint32_t dxil_push_constant_stages = 0; // Phase 2.
uint32_t nir_runtime_data_root_param_idx = 0; // Phase 2.
uint32_t stage_count = 0;
uint32_t shader_name_len = 0;
uint32_t root_signature_len = 0;
uint32_t root_signature_crc = 0;
};
};
struct ShaderInfo {
uint32_t dxil_push_constant_size = 0;
uint32_t nir_runtime_data_root_param_idx = UINT32_MAX;
bool is_compute = false;
struct UniformBindingInfo {
uint32_t stages = 0; // Actual shader stages using the uniform (0 if totally optimized out).
ResourceClass res_class = RES_CLASS_INVALID;
UniformType type = UNIFORM_TYPE_MAX;
uint32_t length = UINT32_MAX;
#ifdef DEV_ENABLED
bool writable = false;
#endif
struct RootSignatureLocation {
uint32_t root_param_idx = UINT32_MAX;
uint32_t range_idx = UINT32_MAX;
};
struct {
RootSignatureLocation resource;
RootSignatureLocation sampler;
} root_sig_locations;
};
struct UniformSet {
TightLocalVector<UniformBindingInfo> bindings;
struct {
uint32_t resources = 0;
uint32_t samplers = 0;
} num_root_params;
};
TightLocalVector<UniformSet> sets;
struct SpecializationConstant {
uint32_t constant_id = UINT32_MAX;
uint32_t int_value = UINT32_MAX;
uint64_t stages_bit_offsets[D3D12_BITCODE_OFFSETS_NUM_STAGES] = {};
};
TightLocalVector<SpecializationConstant> specialization_constants;
uint32_t spirv_specialization_constants_ids_mask = 0;
HashMap<ShaderStage, Vector<uint8_t>> stages_bytecode;
ComPtr<ID3D12RootSignature> root_signature;
ComPtr<ID3D12RootSignatureDeserializer> root_signature_deserializer;
const D3D12_ROOT_SIGNATURE_DESC *root_signature_desc = nullptr; // Owned by the deserializer.
uint32_t root_signature_crc = 0;
};
uint32_t _shader_patch_dxil_specialization_constant(
PipelineSpecializationConstantType p_type,
const void *p_value,
const uint64_t (&p_stages_bit_offsets)[D3D12_BITCODE_OFFSETS_NUM_STAGES],
HashMap<ShaderStage, Vector<uint8_t>> &r_stages_bytecodes,
bool p_is_first_patch);
bool _shader_apply_specialization_constants(
const ShaderInfo *p_shader_info,
VectorView<PipelineSpecializationConstant> p_specialization_constants,
HashMap<ShaderStage, Vector<uint8_t>> &r_final_stages_bytecode);
void _shader_sign_dxil_bytecode(ShaderStage p_stage, Vector<uint8_t> &r_dxil_blob);
public:
virtual String shader_get_binary_cache_key() override final;
virtual Vector<uint8_t> shader_compile_binary_from_spirv(VectorView<ShaderStageSPIRVData> p_spirv, const String &p_shader_name) override final;
virtual ShaderID shader_create_from_bytecode(const Vector<uint8_t> &p_shader_binary, ShaderDescription &r_shader_desc, String &r_name) override final;
virtual uint32_t shader_get_layout_hash(ShaderID p_shader) override final;
virtual void shader_free(ShaderID p_shader) override final;
virtual void shader_destroy_modules(ShaderID p_shader) override final;
/*********************/
/**** UNIFORM SET ****/
/*********************/
private:
struct RootDescriptorTable {
uint32_t root_param_idx = UINT32_MAX;
D3D12_GPU_DESCRIPTOR_HANDLE start_gpu_handle = {};
};
struct UniformSetInfo {
struct {
DescriptorsHeap resources;
DescriptorsHeap samplers;
} desc_heaps;
struct StateRequirement {
ResourceInfo *resource = nullptr;
bool is_buffer = false;
D3D12_RESOURCE_STATES states = {};
uint64_t shader_uniform_idx_mask = 0;
};
TightLocalVector<StateRequirement> resource_states;
struct RecentBind {
uint64_t segment_serial = 0;
uint32_t root_signature_crc = 0;
struct {
TightLocalVector<RootDescriptorTable> resources;
TightLocalVector<RootDescriptorTable> samplers;
} root_tables;
int uses = 0;
} recent_binds[4]; // A better amount may be empirically found.
#ifdef DEV_ENABLED
// Filthy, but useful for dev.
struct ResourceDescInfo {
D3D12_DESCRIPTOR_RANGE_TYPE type;
D3D12_SRV_DIMENSION srv_dimension;
};
TightLocalVector<ResourceDescInfo> resources_desc_info;
#endif
};
public:
virtual UniformSetID uniform_set_create(VectorView<BoundUniform> p_uniforms, ShaderID p_shader, uint32_t p_set_index) override final;
virtual void uniform_set_free(UniformSetID p_uniform_set) override final;
// ----- COMMANDS -----
virtual void command_uniform_set_prepare_for_use(CommandBufferID p_cmd_buffer, UniformSetID p_uniform_set, ShaderID p_shader, uint32_t p_set_index) override final;
private:
void _command_check_descriptor_sets(CommandBufferID p_cmd_buffer);
void _command_bind_uniform_set(CommandBufferID p_cmd_buffer, UniformSetID p_uniform_set, ShaderID p_shader, uint32_t p_set_index, bool p_for_compute);
public:
/******************/
/**** TRANSFER ****/
/******************/
virtual void command_clear_buffer(CommandBufferID p_cmd_buffer, BufferID p_buffer, uint64_t p_offset, uint64_t p_size) override final;
virtual void command_copy_buffer(CommandBufferID p_cmd_buffer, BufferID p_src_buffer, BufferID p_dst_buffer, VectorView<BufferCopyRegion> p_regions) override final;
virtual void command_copy_texture(CommandBufferID p_cmd_buffer, TextureID p_src_texture, TextureLayout p_src_texture_layout, TextureID p_dst_texture, TextureLayout p_dst_texture_layout, VectorView<TextureCopyRegion> p_regions) override final;
virtual void command_resolve_texture(CommandBufferID p_cmd_buffer, TextureID p_src_texture, TextureLayout p_src_texture_layout, uint32_t p_src_layer, uint32_t p_src_mipmap, TextureID p_dst_texture, TextureLayout p_dst_texture_layout, uint32_t p_dst_layer, uint32_t p_dst_mipmap) override final;
virtual void command_clear_color_texture(CommandBufferID p_cmd_buffer, TextureID p_texture, TextureLayout p_texture_layout, const Color &p_color, const TextureSubresourceRange &p_subresources) override final;
public:
virtual void command_copy_buffer_to_texture(CommandBufferID p_cmd_buffer, BufferID p_src_buffer, TextureID p_dst_texture, TextureLayout p_dst_texture_layout, VectorView<BufferTextureCopyRegion> p_regions) override final;
virtual void command_copy_texture_to_buffer(CommandBufferID p_cmd_buffer, TextureID p_src_texture, TextureLayout p_src_texture_layout, BufferID p_dst_buffer, VectorView<BufferTextureCopyRegion> p_regions) override final;
/******************/
/**** PIPELINE ****/
/******************/
virtual void pipeline_free(PipelineID p_pipeline) override final;
private:
HashMap<ID3D12PipelineState *, const ShaderInfo *> pipelines_shaders;
public:
// ----- BINDING -----
virtual void command_bind_push_constants(CommandBufferID p_cmd_buffer, ShaderID p_shader, uint32_t p_dst_first_index, VectorView<uint32_t> p_data) override final;
// ----- CACHE -----
virtual bool pipeline_cache_create(const Vector<uint8_t> &p_data) override final;
virtual void pipeline_cache_free() override final;
virtual size_t pipeline_cache_query_size() override final;
virtual Vector<uint8_t> pipeline_cache_serialize() override final;
/*******************/
/**** RENDERING ****/
/*******************/
// ----- SUBPASS -----
private:
struct RenderPassInfo {
TightLocalVector<Attachment> attachments;
TightLocalVector<Subpass> subpasses;
uint32_t view_count = 0;
uint32_t max_supported_sample_count = 0;
};
public:
virtual RenderPassID render_pass_create(VectorView<Attachment> p_attachments, VectorView<Subpass> p_subpasses, VectorView<SubpassDependency> p_subpass_dependencies, uint32_t p_view_count) override final;
virtual void render_pass_free(RenderPassID p_render_pass) override final;
// ----- COMMANDS -----
virtual void command_begin_render_pass(CommandBufferID p_cmd_buffer, RenderPassID p_render_pass, FramebufferID p_framebuffer, CommandBufferType p_cmd_buffer_type, const Rect2i &p_rect, VectorView<RenderPassClearValue> p_clear_values) override final;
private:
void _end_render_pass(CommandBufferID p_cmd_buffer);
public:
virtual void command_end_render_pass(CommandBufferID p_cmd_buffer) override final;
virtual void command_next_render_subpass(CommandBufferID p_cmd_buffer, CommandBufferType p_cmd_buffer_type) override final;
virtual void command_render_set_viewport(CommandBufferID p_cmd_buffer, VectorView<Rect2i> p_viewports) override final;
virtual void command_render_set_scissor(CommandBufferID p_cmd_buffer, VectorView<Rect2i> p_scissors) override final;
virtual void command_render_clear_attachments(CommandBufferID p_cmd_buffer, VectorView<AttachmentClear> p_attachment_clears, VectorView<Rect2i> p_rects) override final;
// Binding.
virtual void command_bind_render_pipeline(CommandBufferID p_cmd_buffer, PipelineID p_pipeline) override final;
virtual void command_bind_render_uniform_set(CommandBufferID p_cmd_buffer, UniformSetID p_uniform_set, ShaderID p_shader, uint32_t p_set_index) override final;
// Drawing.
virtual void command_render_draw(CommandBufferID p_cmd_buffer, uint32_t p_vertex_count, uint32_t p_instance_count, uint32_t p_base_vertex, uint32_t p_first_instance) override final;
virtual void command_render_draw_indexed(CommandBufferID p_cmd_buffer, uint32_t p_index_count, uint32_t p_instance_count, uint32_t p_first_index, int32_t p_vertex_offset, uint32_t p_first_instance) override final;
virtual void command_render_draw_indexed_indirect(CommandBufferID p_cmd_buffer, BufferID p_indirect_buffer, uint64_t p_offset, uint32_t p_draw_count, uint32_t p_stride) override final;
virtual void command_render_draw_indexed_indirect_count(CommandBufferID p_cmd_buffer, BufferID p_indirect_buffer, uint64_t p_offset, BufferID p_count_buffer, uint64_t p_count_buffer_offset, uint32_t p_max_draw_count, uint32_t p_stride) override final;
virtual void command_render_draw_indirect(CommandBufferID p_cmd_buffer, BufferID p_indirect_buffer, uint64_t p_offset, uint32_t p_draw_count, uint32_t p_stride) override final;
virtual void command_render_draw_indirect_count(CommandBufferID p_cmd_buffer, BufferID p_indirect_buffer, uint64_t p_offset, BufferID p_count_buffer, uint64_t p_count_buffer_offset, uint32_t p_max_draw_count, uint32_t p_stride) override final;
// Buffer binding.
virtual void command_render_bind_vertex_buffers(CommandBufferID p_cmd_buffer, uint32_t p_binding_count, const BufferID *p_buffers, const uint64_t *p_offsets) override final;
virtual void command_render_bind_index_buffer(CommandBufferID p_cmd_buffer, BufferID p_buffer, IndexBufferFormat p_format, uint64_t p_offset) override final;
private:
void _bind_vertex_buffers(CommandBufferInfo *p_cmd_buf_info);
public:
// Dynamic state.
virtual void command_render_set_blend_constants(CommandBufferID p_cmd_buffer, const Color &p_constants) override final;
virtual void command_render_set_line_width(CommandBufferID p_cmd_buffer, float p_width) override final;
// ----- PIPELINE -----
private:
struct RenderPipelineExtraInfo {
struct {
D3D12_PRIMITIVE_TOPOLOGY primitive_topology = {};
Color blend_constant;
float depth_bounds_min = 0.0f;
float depth_bounds_max = 0.0f;
uint32_t stencil_reference = 0;
} dyn_params;
const VertexFormatInfo *vf_info = nullptr;
};
HashMap<ID3D12PipelineState *, RenderPipelineExtraInfo> render_psos_extra_info;
public:
virtual PipelineID render_pipeline_create(
ShaderID p_shader,
VertexFormatID p_vertex_format,
RenderPrimitive p_render_primitive,
PipelineRasterizationState p_rasterization_state,
PipelineMultisampleState p_multisample_state,
PipelineDepthStencilState p_depth_stencil_state,
PipelineColorBlendState p_blend_state,
VectorView<int32_t> p_color_attachments,
BitField<PipelineDynamicStateFlags> p_dynamic_state,
RenderPassID p_render_pass,
uint32_t p_render_subpass,
VectorView<PipelineSpecializationConstant> p_specialization_constants) override final;
/*****************/
/**** COMPUTE ****/
/*****************/
// ----- COMMANDS -----
// Binding.
virtual void command_bind_compute_pipeline(CommandBufferID p_cmd_buffer, PipelineID p_pipeline) override final;
virtual void command_bind_compute_uniform_set(CommandBufferID p_cmd_buffer, UniformSetID p_uniform_set, ShaderID p_shader, uint32_t p_set_index) override final;
// Dispatching.
virtual void command_compute_dispatch(CommandBufferID p_cmd_buffer, uint32_t p_x_groups, uint32_t p_y_groups, uint32_t p_z_groups) override final;
virtual void command_compute_dispatch_indirect(CommandBufferID p_cmd_buffer, BufferID p_indirect_buffer, uint64_t p_offset) override final;
// ----- PIPELINE -----
virtual PipelineID compute_pipeline_create(ShaderID p_shader, VectorView<PipelineSpecializationConstant> p_specialization_constants) override final;
/*****************/
/**** QUERIES ****/
/*****************/
// ----- TIMESTAMP -----
private:
struct TimestampQueryPoolInfo {
ComPtr<ID3D12QueryHeap> query_heap;
uint32_t query_count = 0;
ComPtr<D3D12MA::Allocation> results_buffer_allocation;
};
public:
// Basic.
virtual QueryPoolID timestamp_query_pool_create(uint32_t p_query_count) override final;
virtual void timestamp_query_pool_free(QueryPoolID p_pool_id) override final;
virtual void timestamp_query_pool_get_results(QueryPoolID p_pool_id, uint32_t p_query_count, uint64_t *r_results) override final;
virtual uint64_t timestamp_query_result_to_time(uint64_t p_result) override final;
// Commands.
virtual void command_timestamp_query_pool_reset(CommandBufferID p_cmd_buffer, QueryPoolID p_pool_id, uint32_t p_query_count) override final;
virtual void command_timestamp_write(CommandBufferID p_cmd_buffer, QueryPoolID p_pool_id, uint32_t p_index) override final;
/****************/
/**** LABELS ****/
/****************/
virtual void command_begin_label(CommandBufferID p_cmd_buffer, const char *p_label_name, const Color &p_color) override final;
virtual void command_end_label(CommandBufferID p_cmd_buffer) override final;
/****************/
/**** DEBUG *****/
/****************/
virtual void command_insert_breadcrumb(CommandBufferID p_cmd_buffer, uint32_t p_data) override final;
/********************/
/**** SUBMISSION ****/
/********************/
private:
struct FrameInfo {
struct {
DescriptorsHeap resources;
DescriptorsHeap samplers;
DescriptorsHeap aux;
DescriptorsHeap rtv;
} desc_heaps;
struct {
DescriptorsHeap::Walker resources;
DescriptorsHeap::Walker samplers;
DescriptorsHeap::Walker aux;
DescriptorsHeap::Walker rtv;
} desc_heap_walkers;
struct {
bool resources = false;
bool samplers = false;
bool aux = false;
bool rtv = false;
} desc_heaps_exhausted_reported;
CD3DX12_CPU_DESCRIPTOR_HANDLE null_rtv_handle = {}; // For [[MANUAL_SUBPASSES]].
uint32_t segment_serial = 0;
#ifdef DEV_ENABLED
uint32_t uniform_set_reused = 0;
#endif
};
TightLocalVector<FrameInfo> frames;
uint32_t frame_idx = 0;
uint32_t frames_drawn = 0;
uint32_t segment_serial = 0;
bool segment_begun = false;
HashMap<uint64_t, bool> has_comp_alpha;
public:
virtual void begin_segment(uint32_t p_frame_index, uint32_t p_frames_drawn) override final;
virtual void end_segment() override final;
/**************/
/**** MISC ****/
/**************/
virtual void set_object_name(ObjectType p_type, ID p_driver_id, const String &p_name) override final;
virtual uint64_t get_resource_native_handle(DriverResource p_type, ID p_driver_id) override final;
virtual uint64_t get_total_memory_used() override final;
virtual uint64_t limit_get(Limit p_limit) override final;
virtual uint64_t api_trait_get(ApiTrait p_trait) override final;
virtual bool has_feature(Features p_feature) override final;
virtual const MultiviewCapabilities &get_multiview_capabilities() override final;
virtual String get_api_name() const override final;
virtual String get_api_version() const override final;
virtual String get_pipeline_cache_uuid() const override final;
virtual const Capabilities &get_capabilities() const override final;
virtual bool is_composite_alpha_supported(CommandQueueID p_queue) const override final;
static bool is_in_developer_mode();
private:
/*********************/
/**** BOOKKEEPING ****/
/*********************/
using VersatileResource = VersatileResourceTemplate<
BufferInfo,
TextureInfo,
TextureInfo,
TextureInfo,
VertexFormatInfo,
CommandBufferInfo,
FramebufferInfo,
ShaderInfo,
UniformSetInfo,
RenderPassInfo,
TimestampQueryPoolInfo>;
PagedAllocator<VersatileResource> resources_allocator;
/******************/
public:
RenderingDeviceDriverD3D12(RenderingContextDriverD3D12 *p_context_driver);
virtual ~RenderingDeviceDriverD3D12();
};
#endif // RENDERING_DEVICE_DRIVER_D3D12_H
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