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wiScene.cpp
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#include "wiScene.h"
#include "wiTextureHelper.h"
#include "wiResourceManager.h"
#include "wiPhysics.h"
#include "wiRenderer.h"
#include "wiJobSystem.h"
#include "wiSpinLock.h"
#include "wiHelper.h"
#include "wiRenderer.h"
#include "wiBacklog.h"
#include "wiTimer.h"
#include "wiUnorderedMap.h"
#include "wiLua.h"
#include "wiAllocator.h"
#include "wiProfiler.h"
#include "shaders/ShaderInterop_SurfelGI.h"
#include "shaders/ShaderInterop_DDGI.h"
using namespace wi::ecs;
using namespace wi::enums;
using namespace wi::graphics;
using namespace wi::primitive;
namespace wi::scene
{
const uint32_t small_subtask_groupsize = 64u;
void Scene::Update(float dt)
{
this->dt = dt;
time += dt;
wi::jobsystem::context ctx;
// Script system runs first, because it could create new entities and components
// So GPU persistent resources need to be created accordingly for them too:
RunScriptUpdateSystem(ctx);
ScanAnimationDependencies();
ScanSpringDependencies();
// Terrains updates kick off:
if (dt > 0)
{
// Because this also spawns render tasks, this must not be during dt == 0 (eg. background loading)
for (size_t i = 0; i < terrains.GetCount(); ++i)
{
wi::terrain::Terrain& terrain = terrains[i];
terrain.terrainEntity = terrains.GetEntity(i);
terrain.scene = this;
terrain.Generation_Update(camera);
}
}
GraphicsDevice* device = wi::graphics::GetDevice();
instanceArraySize = objects.GetCount() + hairs.GetCount() + emitters.GetCount();
if (impostors.GetCount() > 0)
{
impostorInstanceOffset = uint32_t(instanceArraySize);
instanceArraySize += 1;
}
if (weathers.GetCount() > 0 && weathers[0].rain_amount > 0)
{
rainInstanceOffset = uint32_t(instanceArraySize);
instanceArraySize += 1;
}
if (instanceUploadBuffer[0].desc.size < (instanceArraySize * sizeof(ShaderMeshInstance)))
{
GPUBufferDesc desc;
desc.stride = sizeof(ShaderMeshInstance);
desc.size = desc.stride * instanceArraySize * 2; // *2 to grow fast
desc.bind_flags = BindFlag::SHADER_RESOURCE;
desc.misc_flags = ResourceMiscFlag::BUFFER_STRUCTURED;
if (!device->CheckCapability(GraphicsDeviceCapability::CACHE_COHERENT_UMA))
{
// Non-UMA: separate Default usage buffer
device->CreateBuffer(&desc, nullptr, &instanceBuffer);
device->SetName(&instanceBuffer, "Scene::instanceBuffer");
// Upload buffer shouldn't be used by shaders with Non-UMA:
desc.bind_flags = BindFlag::NONE;
desc.misc_flags = ResourceMiscFlag::NONE;
}
desc.usage = Usage::UPLOAD;
for (int i = 0; i < arraysize(instanceUploadBuffer); ++i)
{
device->CreateBuffer(&desc, nullptr, &instanceUploadBuffer[i]);
device->SetName(&instanceUploadBuffer[i], "Scene::instanceUploadBuffer");
}
}
instanceArrayMapped = (ShaderMeshInstance*)instanceUploadBuffer[device->GetBufferIndex()].mapped_data;
materialArraySize = materials.GetCount();
if (impostors.GetCount() > 0)
{
impostorMaterialOffset = uint32_t(materialArraySize);
materialArraySize += 1;
}
if (weathers.GetCount() > 0 && weathers[0].rain_amount > 0)
{
rainMaterialOffset = uint32_t(materialArraySize);
materialArraySize += 1;
}
if (materialUploadBuffer[0].desc.size < (materialArraySize * sizeof(ShaderMaterial)))
{
GPUBufferDesc desc;
desc.stride = sizeof(ShaderMaterial);
desc.size = desc.stride * materialArraySize * 2; // *2 to grow fast
desc.bind_flags = BindFlag::SHADER_RESOURCE;
desc.misc_flags = ResourceMiscFlag::BUFFER_STRUCTURED;
if (!device->CheckCapability(GraphicsDeviceCapability::CACHE_COHERENT_UMA))
{
// Non-UMA: separate Default usage buffer
device->CreateBuffer(&desc, nullptr, &materialBuffer);
device->SetName(&materialBuffer, "Scene::materialBuffer");
// Upload buffer shouldn't be used by shaders with Non-UMA:
desc.bind_flags = BindFlag::NONE;
desc.misc_flags = ResourceMiscFlag::NONE;
}
desc.usage = Usage::UPLOAD;
for (int i = 0; i < arraysize(materialUploadBuffer); ++i)
{
device->CreateBuffer(&desc, nullptr, &materialUploadBuffer[i]);
device->SetName(&materialUploadBuffer[i], "Scene::materialUploadBuffer");
}
}
materialArrayMapped = (ShaderMaterial*)materialUploadBuffer[device->GetBufferIndex()].mapped_data;
// Occlusion culling read:
if(wi::renderer::GetOcclusionCullingEnabled() && !wi::renderer::GetFreezeCullingCameraEnabled())
{
uint32_t minQueryCount = uint32_t(objects.GetCount() + lights.GetCount() + 1); // +1: ocean (don't know for sure if it exists yet before weather update)
if (queryHeap.desc.query_count < minQueryCount)
{
GPUQueryHeapDesc desc;
desc.type = GpuQueryType::OCCLUSION_BINARY;
desc.query_count = minQueryCount * 2; // *2 to grow fast
bool success = device->CreateQueryHeap(&desc, &queryHeap);
assert(success);
GPUBufferDesc bd;
bd.usage = Usage::READBACK;
bd.size = desc.query_count * sizeof(uint64_t);
for (int i = 0; i < arraysize(queryResultBuffer); ++i)
{
success = device->CreateBuffer(&bd, nullptr, &queryResultBuffer[i]);
assert(success);
device->SetName(&queryResultBuffer[i], "Scene::queryResultBuffer");
}
if (device->CheckCapability(GraphicsDeviceCapability::PREDICATION))
{
bd.usage = Usage::DEFAULT;
bd.misc_flags |= ResourceMiscFlag::PREDICATION;
success = device->CreateBuffer(&bd, nullptr, &queryPredicationBuffer);
assert(success);
device->SetName(&queryPredicationBuffer, "Scene::queryPredicationBuffer");
}
}
// Advance to next query result buffer to use (this will be the oldest one that was written)
queryheap_idx = device->GetBufferIndex();
// Clear query allocation state:
queryAllocator.store(0);
}
if (dt > 0)
{
// Scan objects to check if lightmap rendering is requested:
lightmap_request_allocator.store(0);
lightmap_requests.reserve(objects.GetCount());
wi::jobsystem::Dispatch(ctx, (uint32_t)objects.GetCount(), small_subtask_groupsize, [this](wi::jobsystem::JobArgs args) {
ObjectComponent& object = objects[args.jobIndex];
if (object.IsLightmapRenderRequested())
{
uint32_t request_index = lightmap_request_allocator.fetch_add(1);
*(lightmap_requests.data() + request_index) = args.jobIndex;
}
});
// Scan mesh subset counts and skinning data sizes to allocate GPU geometry data:
geometryAllocator.store(0u);
skinningAllocator.store(0u);
wi::jobsystem::Dispatch(ctx, (uint32_t)meshes.GetCount(), small_subtask_groupsize, [&](wi::jobsystem::JobArgs args) {
MeshComponent& mesh = meshes[args.jobIndex];
mesh.geometryOffset = geometryAllocator.fetch_add((uint32_t)mesh.subsets.size());
skinningAllocator.fetch_add(uint32_t(mesh.morph_targets.size() * sizeof(MorphTargetGPU)));
});
wi::jobsystem::Dispatch(ctx, (uint32_t)armatures.GetCount(), small_subtask_groupsize, [&](wi::jobsystem::JobArgs args) {
ArmatureComponent& armature = armatures[args.jobIndex];
skinningAllocator.fetch_add(uint32_t(armature.boneCollection.size() * sizeof(ShaderTransform)));
});
wi::jobsystem::Execute(ctx, [&](wi::jobsystem::JobArgs args) {
// Must not keep inactive instances, so init them for safety:
ShaderMeshInstance inst;
inst.init();
for (uint32_t i = 0; i < instanceArraySize; ++i)
{
std::memcpy(instanceArrayMapped + i, &inst, sizeof(inst));
}
});
}
RunAnimationUpdateSystem(ctx);
wi::physics::RunPhysicsUpdateSystem(ctx, *this, dt);
RunTransformUpdateSystem(ctx);
wi::jobsystem::Wait(ctx); // dependencies
RunHierarchyUpdateSystem(ctx);
// Lightmap requests are determined at this point, so we know if we need TLAS or not:
if (lightmap_request_allocator.load() > 0)
{
SetAccelerationStructureUpdateRequested(true);
}
// This must be after lightmap requests were determined:
TLAS_instancesMapped = nullptr;
if (IsAccelerationStructureUpdateRequested() && device->CheckCapability(GraphicsDeviceCapability::RAYTRACING))
{
GPUBufferDesc desc;
desc.stride = (uint32_t)device->GetTopLevelAccelerationStructureInstanceSize();
desc.size = desc.stride * instanceArraySize * 2; // *2 to grow fast
desc.usage = Usage::UPLOAD;
if (TLAS_instancesUpload->desc.size < desc.size)
{
for (int i = 0; i < arraysize(TLAS_instancesUpload); ++i)
{
device->CreateBuffer(&desc, nullptr, &TLAS_instancesUpload[i]);
device->SetName(&TLAS_instancesUpload[i], "Scene::TLAS_instancesUpload");
}
}
TLAS_instancesMapped = TLAS_instancesUpload[device->GetBufferIndex()].mapped_data;
wi::jobsystem::Execute(ctx, [&](wi::jobsystem::JobArgs args) {
// Must not keep inactive TLAS instances, so zero them out for safety:
std::memset(TLAS_instancesMapped, 0, TLAS_instancesUpload->desc.size);
});
}
// GPU subset count allocation is ready at this point:
geometryArraySize = geometryAllocator.load();
geometryArraySize += hairs.GetCount();
geometryArraySize += emitters.GetCount();
if (impostors.GetCount() > 0)
{
impostorGeometryOffset = uint32_t(geometryArraySize);
geometryArraySize += 1;
}
if (weathers.GetCount() > 0 && weathers[0].rain_amount > 0)
{
rainGeometryOffset = uint32_t(geometryArraySize);
geometryArraySize += 1;
}
if (geometryUploadBuffer[0].desc.size < (geometryArraySize * sizeof(ShaderGeometry)))
{
GPUBufferDesc desc;
desc.stride = sizeof(ShaderGeometry);
desc.size = desc.stride * geometryArraySize * 2; // *2 to grow fast
desc.bind_flags = BindFlag::SHADER_RESOURCE;
desc.misc_flags = ResourceMiscFlag::BUFFER_STRUCTURED;
if (!device->CheckCapability(GraphicsDeviceCapability::CACHE_COHERENT_UMA))
{
// Non-UMA: separate Default usage buffer
device->CreateBuffer(&desc, nullptr, &geometryBuffer);
device->SetName(&geometryBuffer, "Scene::geometryBuffer");
// Upload buffer shouldn't be used by shaders with Non-UMA:
desc.bind_flags = BindFlag::NONE;
desc.misc_flags = ResourceMiscFlag::NONE;
}
desc.usage = Usage::UPLOAD;
for (int i = 0; i < arraysize(geometryUploadBuffer); ++i)
{
device->CreateBuffer(&desc, nullptr, &geometryUploadBuffer[i]);
device->SetName(&geometryUploadBuffer[i], "Scene::geometryUploadBuffer");
}
}
geometryArrayMapped = (ShaderGeometry*)geometryUploadBuffer[device->GetBufferIndex()].mapped_data;
// Skinning data size is ready at this point:
skinningDataSize = skinningAllocator.load();
skinningAllocator.store(0);
if (skinningUploadBuffer[0].desc.size < skinningDataSize)
{
GPUBufferDesc desc;
desc.size = skinningDataSize * 2; // *2 to grow fast
desc.bind_flags = BindFlag::SHADER_RESOURCE;
desc.misc_flags = ResourceMiscFlag::BUFFER_RAW;
if (!device->CheckCapability(GraphicsDeviceCapability::CACHE_COHERENT_UMA))
{
// Non-UMA: separate Default usage buffer
device->CreateBuffer(&desc, nullptr, &skinningBuffer);
device->SetName(&skinningBuffer, "Scene::skinningBuffer");
// Upload buffer shouldn't be used by shaders with Non-UMA:
desc.bind_flags = BindFlag::NONE;
desc.misc_flags = ResourceMiscFlag::NONE;
}
desc.usage = Usage::UPLOAD;
for (int i = 0; i < arraysize(skinningUploadBuffer); ++i)
{
device->CreateBuffer(&desc, nullptr, &skinningUploadBuffer[i]);
device->SetName(&skinningUploadBuffer[i], "Scene::skinningUploadBuffer");
}
}
skinningDataMapped = skinningUploadBuffer[device->GetBufferIndex()].mapped_data;
RunExpressionUpdateSystem(ctx);
RunMeshUpdateSystem(ctx);
RunMaterialUpdateSystem(ctx);
wi::jobsystem::Wait(ctx); // dependencies
RunProceduralAnimationUpdateSystem(ctx);
RunArmatureUpdateSystem(ctx);
RunWeatherUpdateSystem(ctx);
wi::jobsystem::Wait(ctx); // dependencies
RunObjectUpdateSystem(ctx);
RunCameraUpdateSystem(ctx);
RunDecalUpdateSystem(ctx);
RunProbeUpdateSystem(ctx);
RunForceUpdateSystem(ctx);
RunLightUpdateSystem(ctx);
RunParticleUpdateSystem(ctx);
RunSoundUpdateSystem(ctx);
RunVideoUpdateSystem(ctx);
RunImpostorUpdateSystem(ctx);
RunSpriteUpdateSystem(ctx);
RunFontUpdateSystem(ctx);
wi::jobsystem::Wait(ctx); // dependencies
// Merge parallel bounds computation (depends on object update system):
bounds = AABB();
for (auto& group_bound : parallel_bounds)
{
bounds = AABB::Merge(bounds, group_bound);
}
// Meshlet buffer:
uint32_t meshletCount = meshletAllocator.load();
if(meshletBuffer.desc.size < meshletCount * sizeof(ShaderMeshlet))
{
GPUBufferDesc desc;
desc.stride = sizeof(ShaderMeshlet);
desc.size = desc.stride * meshletCount * 2; // *2 to grow fast
desc.bind_flags = BindFlag::SHADER_RESOURCE | BindFlag::UNORDERED_ACCESS;
desc.misc_flags = ResourceMiscFlag::BUFFER_STRUCTURED;
bool success = device->CreateBuffer(&desc, nullptr, &meshletBuffer);
assert(success);
device->SetName(&meshletBuffer, "meshletBuffer");
}
if (IsAccelerationStructureUpdateRequested())
{
if (device->CheckCapability(GraphicsDeviceCapability::RAYTRACING))
{
// Recreate top level acceleration structure if the object count changed:
if (TLAS.desc.top_level.count < instanceArraySize)
{
RaytracingAccelerationStructureDesc desc;
desc.flags = RaytracingAccelerationStructureDesc::FLAG_PREFER_FAST_BUILD;
desc.type = RaytracingAccelerationStructureDesc::Type::TOPLEVEL;
desc.top_level.count = (uint32_t)instanceArraySize * 2; // *2 to grow fast
GPUBufferDesc bufdesc;
bufdesc.misc_flags |= ResourceMiscFlag::RAY_TRACING;
bufdesc.stride = (uint32_t)device->GetTopLevelAccelerationStructureInstanceSize();
bufdesc.size = bufdesc.stride * desc.top_level.count;
bool success = device->CreateBuffer(&bufdesc, nullptr, &desc.top_level.instance_buffer);
assert(success);
device->SetName(&desc.top_level.instance_buffer, "Scene::TLAS.instanceBuffer");
success = device->CreateRaytracingAccelerationStructure(&desc, &TLAS);
assert(success);
device->SetName(&TLAS, "Scene::TLAS");
}
}
else
{
// Software GPU BVH:
BVH.Update(*this);
}
}
// Update water ripples:
for (size_t i = 0; i < waterRipples.size(); ++i)
{
auto& ripple = waterRipples[i];
ripple.Update(dt * 60);
// Remove inactive ripples:
if (ripple.params.opacity <= 0 + FLT_EPSILON || ripple.params.fade >= 1 - FLT_EPSILON)
{
ripple = waterRipples.back();
waterRipples.pop_back();
i--;
}
}
if (wi::renderer::GetSurfelGIEnabled())
{
if (!surfelgi.surfelBuffer.IsValid())
{
surfelgi.cleared = false;
GPUBufferDesc buf;
buf.stride = sizeof(Surfel);
buf.size = buf.stride * SURFEL_CAPACITY;
buf.misc_flags = ResourceMiscFlag::BUFFER_STRUCTURED;
buf.bind_flags = BindFlag::SHADER_RESOURCE | BindFlag::UNORDERED_ACCESS;
device->CreateBuffer(&buf, nullptr, &surfelgi.surfelBuffer);
device->SetName(&surfelgi.surfelBuffer, "surfelgi.surfelBuffer");
buf.stride = sizeof(SurfelData);
buf.size = buf.stride * SURFEL_CAPACITY;
buf.misc_flags = ResourceMiscFlag::BUFFER_STRUCTURED;
device->CreateBuffer(&buf, nullptr, &surfelgi.dataBuffer);
device->SetName(&surfelgi.dataBuffer, "surfelgi.dataBuffer");
buf.stride = sizeof(SurfelVarianceDataPacked);
buf.size = buf.stride * SURFEL_CAPACITY * SURFEL_MOMENT_RESOLUTION * SURFEL_MOMENT_RESOLUTION;
buf.misc_flags = ResourceMiscFlag::BUFFER_STRUCTURED;
device->CreateBuffer(&buf, nullptr, &surfelgi.varianceBuffer);
device->SetName(&surfelgi.varianceBuffer, "surfelgi.varianceBuffer");
buf.stride = sizeof(uint);
buf.size = buf.stride * SURFEL_CAPACITY;
buf.misc_flags = ResourceMiscFlag::BUFFER_STRUCTURED;
device->CreateBuffer(&buf, nullptr, &surfelgi.aliveBuffer[0]);
device->SetName(&surfelgi.aliveBuffer[0], "surfelgi.aliveBuffer[0]");
device->CreateBuffer(&buf, nullptr, &surfelgi.aliveBuffer[1]);
device->SetName(&surfelgi.aliveBuffer[1], "surfelgi.aliveBuffer[1]");
auto fill_dead_indices = [&](void* dest) {
uint32_t* dead_indices = (uint32_t*)dest;
for (uint32_t i = 0; i < SURFEL_CAPACITY; ++i)
{
uint32_t ind = uint32_t(SURFEL_CAPACITY - 1 - i);
std::memcpy(dead_indices + i, &ind, sizeof(ind));
}
};
device->CreateBuffer2(&buf, fill_dead_indices, &surfelgi.deadBuffer);
device->SetName(&surfelgi.deadBuffer, "surfelgi.deadBuffer");
buf.stride = sizeof(uint);
buf.size = SURFEL_STATS_SIZE;
buf.misc_flags = ResourceMiscFlag::BUFFER_RAW;
uint stats_data[] = { 0,0,SURFEL_CAPACITY,0,0,0 };
device->CreateBuffer(&buf, &stats_data, &surfelgi.statsBuffer);
device->SetName(&surfelgi.statsBuffer, "surfelgi.statsBuffer");
buf.stride = sizeof(uint);
buf.size = SURFEL_INDIRECT_SIZE;
buf.misc_flags = ResourceMiscFlag::BUFFER_RAW | ResourceMiscFlag::INDIRECT_ARGS;
uint indirect_data[] = { 0,0,0, 0,0,0, 0,0,0 };
device->CreateBuffer(&buf, &indirect_data, &surfelgi.indirectBuffer);
device->SetName(&surfelgi.indirectBuffer, "surfelgi.indirectBuffer");
buf.stride = sizeof(SurfelGridCell);
buf.size = buf.stride * SURFEL_TABLE_SIZE;
buf.misc_flags = ResourceMiscFlag::BUFFER_STRUCTURED;
device->CreateBuffer(&buf, nullptr, &surfelgi.gridBuffer);
device->SetName(&surfelgi.gridBuffer, "surfelgi.gridBuffer");
buf.stride = sizeof(uint);
buf.size = buf.stride * SURFEL_CAPACITY * 27; // each surfel can be in 3x3x3=27 cells
buf.misc_flags = ResourceMiscFlag::BUFFER_STRUCTURED;
device->CreateBuffer(&buf, nullptr, &surfelgi.cellBuffer);
device->SetName(&surfelgi.cellBuffer, "surfelgi.cellBuffer");
buf.stride = sizeof(SurfelRayDataPacked);
buf.size = buf.stride * SURFEL_RAY_BUDGET;
buf.misc_flags = ResourceMiscFlag::BUFFER_STRUCTURED;
device->CreateBuffer(&buf, nullptr, &surfelgi.rayBuffer);
device->SetName(&surfelgi.rayBuffer, "surfelgi.rayBuffer");
TextureDesc tex;
tex.width = SURFEL_MOMENT_ATLAS_TEXELS;
tex.height = SURFEL_MOMENT_ATLAS_TEXELS;
tex.format = Format::R16G16_FLOAT;
tex.bind_flags = BindFlag::UNORDERED_ACCESS | BindFlag::SHADER_RESOURCE;
tex.layout = ResourceState::SHADER_RESOURCE_COMPUTE;
device->CreateTexture(&tex, nullptr, &surfelgi.momentsTexture);
device->SetName(&surfelgi.momentsTexture, "surfelgi.momentsTexture");
tex.bind_flags = BindFlag::SHADER_RESOURCE;
tex.misc_flags = ResourceMiscFlag::SPARSE;
tex.format = Format::BC6H_UF16;
tex.width = SURFEL_MOMENT_ATLAS_TEXELS;
tex.height = SURFEL_MOMENT_ATLAS_TEXELS;
tex.width = std::max(256u, tex.width); // force non-packed mip behaviour
tex.height = std::max(256u, tex.height); // force non-packed mip behaviour
device->CreateTexture(&tex, nullptr, &surfelgi.irradianceTexture);
device->SetName(&surfelgi.irradianceTexture, "surfelgi.irradianceTexture");
tex.bind_flags = BindFlag::UNORDERED_ACCESS | BindFlag::SHADER_RESOURCE;
tex.misc_flags = ResourceMiscFlag::SPARSE;
tex.width = SURFEL_MOMENT_ATLAS_TEXELS / 4;
tex.height = SURFEL_MOMENT_ATLAS_TEXELS / 4;
tex.format = Format::R32G32B32A32_UINT;
tex.layout = ResourceState::UNORDERED_ACCESS;
device->CreateTexture(&tex, nullptr, &surfelgi.irradianceTexture_rw);
device->SetName(&surfelgi.irradianceTexture_rw, "surfelgi.irradianceTexture_rw");
buf = {};
buf.alignment = surfelgi.irradianceTexture.sparse_page_size;
buf.size = surfelgi.irradianceTexture.sparse_properties->total_tile_count * buf.alignment * 2;
buf.misc_flags = ResourceMiscFlag::SPARSE_TILE_POOL_TEXTURE_NON_RT_DS;
device->CreateBuffer(&buf, nullptr, &surfelgi.sparse_tile_pool);
SparseUpdateCommand commands[2];
commands[0].sparse_resource = &surfelgi.irradianceTexture;
commands[0].tile_pool = &surfelgi.sparse_tile_pool;
commands[0].num_resource_regions = 1;
uint32_t tile_count = surfelgi.irradianceTexture_rw.sparse_properties->total_tile_count;
uint32_t tile_offset[2] = { 0, tile_count };
SparseRegionSize region;
region.width = (tex.width + surfelgi.irradianceTexture_rw.sparse_properties->tile_width - 1) / surfelgi.irradianceTexture_rw.sparse_properties->tile_width;
region.height = (tex.height + surfelgi.irradianceTexture_rw.sparse_properties->tile_height - 1) / surfelgi.irradianceTexture_rw.sparse_properties->tile_height;
SparseResourceCoordinate coordinate;
coordinate.x = 0;
coordinate.y = 0;
TileRangeFlags flags = TileRangeFlags::None;
commands[0].sizes = ®ion;
commands[0].coordinates = &coordinate;
commands[0].range_flags = &flags;
commands[0].range_tile_counts = &tile_count;
commands[0].range_start_offsets = &tile_offset[0];
commands[1] = commands[0];
commands[1].sparse_resource = &surfelgi.irradianceTexture_rw;
device->SparseUpdate(QUEUE_GRAPHICS, commands, arraysize(commands));
}
std::swap(surfelgi.aliveBuffer[0], surfelgi.aliveBuffer[1]);
}
else
{
surfelgi = {};
}
if (wi::renderer::GetDDGIEnabled())
{
ddgi.frame_index++;
if (!ddgi.color_texture_rw.IsValid()) // Check the _rw texture here because that is invalid with serialized DDGI data, and we can detect if dynamic resources need recreation when serialized is loaded
{
ddgi.frame_index = 0;
const uint32_t probe_count = ddgi.grid_dimensions.x * ddgi.grid_dimensions.y * ddgi.grid_dimensions.z;
GPUBufferDesc buf;
buf.stride = sizeof(DDGIRayDataPacked);
buf.size = buf.stride * probe_count * DDGI_MAX_RAYCOUNT;
buf.bind_flags = BindFlag::UNORDERED_ACCESS | BindFlag::SHADER_RESOURCE;
buf.misc_flags = ResourceMiscFlag::BUFFER_STRUCTURED;
device->CreateBuffer(&buf, nullptr, &ddgi.ray_buffer);
device->SetName(&ddgi.ray_buffer, "ddgi.ray_buffer");
buf.stride = sizeof(DDGIVarianceDataPacked);
buf.size = buf.stride * probe_count * DDGI_COLOR_RESOLUTION * DDGI_COLOR_RESOLUTION;
buf.misc_flags = ResourceMiscFlag::BUFFER_STRUCTURED;
device->CreateBuffer(&buf, nullptr, &ddgi.variance_buffer);
device->SetName(&ddgi.variance_buffer, "ddgi.variance_buffer");
buf.stride = sizeof(uint8_t);
buf.size = buf.stride * probe_count;
buf.misc_flags = ResourceMiscFlag::NONE;
buf.format = Format::R8_UINT;
device->CreateBuffer(&buf, nullptr, &ddgi.raycount_buffer);
device->SetName(&ddgi.raycount_buffer, "ddgi.raycount_buffer");
buf.stride = sizeof(uint32_t);
buf.size = buf.stride * (probe_count * DDGI_MAX_RAYCOUNT + 4); // +4: counter/indirect dispatch args
buf.misc_flags = ResourceMiscFlag::BUFFER_STRUCTURED;
buf.format = Format::UNKNOWN;
device->CreateBuffer(&buf, nullptr, &ddgi.rayallocation_buffer);
device->SetName(&ddgi.rayallocation_buffer, "ddgi.rayallocation_buffer");
TextureDesc tex;
tex.width = DDGI_COLOR_TEXELS * ddgi.grid_dimensions.x * ddgi.grid_dimensions.y;
tex.height = DDGI_COLOR_TEXELS * ddgi.grid_dimensions.z;
tex.format = Format::BC6H_UF16;
tex.misc_flags = ResourceMiscFlag::SPARSE; // sparse aliasing to write BC6H_UF16 as uint
tex.width = std::max(256u, tex.width); // force non-packed mip behaviour
tex.height = std::max(256u, tex.height); // force non-packed mip behaviour
tex.bind_flags = BindFlag::SHADER_RESOURCE;
tex.layout = ResourceState::SHADER_RESOURCE;
device->CreateTexture(&tex, nullptr, &ddgi.color_texture);
device->SetName(&ddgi.color_texture, "ddgi.color_texture");
tex.format = Format::R32G32B32A32_UINT; // packed BC6H_UF16
tex.width /= 4;
tex.height /= 4;
tex.bind_flags = BindFlag::UNORDERED_ACCESS;
tex.layout = ResourceState::UNORDERED_ACCESS;
device->CreateTexture(&tex, nullptr, &ddgi.color_texture_rw);
device->SetName(&ddgi.color_texture_rw, "ddgi.color_texture_rw");
buf = {};
buf.alignment = ddgi.color_texture_rw.sparse_page_size;
buf.size = ddgi.color_texture_rw.sparse_properties->total_tile_count * buf.alignment * 2;
buf.misc_flags = ResourceMiscFlag::SPARSE_TILE_POOL_TEXTURE_NON_RT_DS;
device->CreateBuffer(&buf, nullptr, &ddgi.sparse_tile_pool);
SparseUpdateCommand commands[2];
commands[0].sparse_resource = &ddgi.color_texture;
commands[0].tile_pool = &ddgi.sparse_tile_pool;
commands[0].num_resource_regions = 1;
uint32_t tile_count = ddgi.color_texture_rw.sparse_properties->total_tile_count;
uint32_t tile_offset[2] = { 0, tile_count };
SparseRegionSize region;
region.width = (tex.width + ddgi.color_texture_rw.sparse_properties->tile_width - 1) / ddgi.color_texture_rw.sparse_properties->tile_width;
region.height = (tex.height + ddgi.color_texture_rw.sparse_properties->tile_height - 1) / ddgi.color_texture_rw.sparse_properties->tile_height;
SparseResourceCoordinate coordinate;
coordinate.x = 0;
coordinate.y = 0;
TileRangeFlags flags = TileRangeFlags::None;
commands[0].sizes = ®ion;
commands[0].coordinates = &coordinate;
commands[0].range_flags = &flags;
commands[0].range_tile_counts = &tile_count;
commands[0].range_start_offsets = &tile_offset[0];
commands[1] = commands[0];
commands[1].sparse_resource = &ddgi.color_texture_rw;
device->SparseUpdate(QUEUE_GRAPHICS, commands, arraysize(commands));
tex.width = DDGI_DEPTH_TEXELS * ddgi.grid_dimensions.x * ddgi.grid_dimensions.y;
tex.height = DDGI_DEPTH_TEXELS * ddgi.grid_dimensions.z;
tex.format = Format::R16G16_FLOAT;
tex.misc_flags = {};
tex.bind_flags = BindFlag::UNORDERED_ACCESS | BindFlag::SHADER_RESOURCE;
tex.layout = ResourceState::SHADER_RESOURCE;
device->CreateTexture(&tex, nullptr, &ddgi.depth_texture);
device->SetName(&ddgi.depth_texture, "ddgi.depth_texture");
tex.type = TextureDesc::Type::TEXTURE_3D;
tex.width = ddgi.grid_dimensions.x;
tex.height = ddgi.grid_dimensions.z;
tex.depth = ddgi.grid_dimensions.y;
tex.format = Format::R10G10B10A2_UNORM;
tex.bind_flags = BindFlag::SHADER_RESOURCE | BindFlag::UNORDERED_ACCESS;
tex.layout = ResourceState::SHADER_RESOURCE_COMPUTE;
device->CreateTexture(&tex, nullptr, &ddgi.offset_texture);
device->SetName(&ddgi.offset_texture, "ddgi.offset_texture");
}
ddgi.grid_min = bounds.getMin();
ddgi.grid_min.x -= 1;
ddgi.grid_min.y -= 1;
ddgi.grid_min.z -= 1;
ddgi.grid_max = bounds.getMax();
ddgi.grid_max.x += 1;
ddgi.grid_max.y += 1;
ddgi.grid_max.z += 1;
}
else if (ddgi.color_texture_rw.IsValid()) // if color_texture_rw is valid, it means DDGI was not from serialization, so it will be deleted when DDGI is disabled
{
ddgi = {};
}
if (wi::renderer::GetVXGIEnabled())
{
if(!vxgi.radiance.IsValid())
{
TextureDesc desc;
desc.type = TextureDesc::Type::TEXTURE_3D;
desc.width = vxgi.res * (6 + DIFFUSE_CONE_COUNT);
desc.height = vxgi.res * VXGI_CLIPMAP_COUNT;
desc.depth = vxgi.res;
desc.mip_levels = 1;
desc.format = Format::R16G16B16A16_FLOAT;
desc.bind_flags = BindFlag::UNORDERED_ACCESS | BindFlag::SHADER_RESOURCE;
desc.usage = Usage::DEFAULT;
device->CreateTexture(&desc, nullptr, &vxgi.radiance);
device->SetName(&vxgi.radiance, "vxgi.radiance");
device->CreateTexture(&desc, nullptr, &vxgi.prev_radiance);
device->SetName(&vxgi.prev_radiance, "vxgi.prev_radiance");
vxgi.pre_clear = true;
}
if (!vxgi.render_atomic.IsValid())
{
TextureDesc desc;
desc.type = TextureDesc::Type::TEXTURE_3D;
desc.width = vxgi.res * 6;
desc.height = vxgi.res;
desc.depth = vxgi.res * VOXELIZATION_CHANNEL_COUNT;
desc.mip_levels = 1;
desc.usage = Usage::DEFAULT;
desc.bind_flags = BindFlag::UNORDERED_ACCESS | BindFlag::SHADER_RESOURCE;
desc.format = Format::R32_UINT;
device->CreateTexture(&desc, nullptr, &vxgi.render_atomic);
device->SetName(&vxgi.render_atomic, "vxgi.render_atomic");
}
if (!vxgi.sdf.IsValid())
{
TextureDesc desc;
desc.type = TextureDesc::Type::TEXTURE_3D;
desc.width = vxgi.res;
desc.height = vxgi.res * VXGI_CLIPMAP_COUNT;
desc.depth = vxgi.res;
desc.mip_levels = 1;
desc.usage = Usage::DEFAULT;
desc.bind_flags = BindFlag::UNORDERED_ACCESS | BindFlag::SHADER_RESOURCE;
desc.format = Format::R16_FLOAT;
device->CreateTexture(&desc, nullptr, &vxgi.sdf);
device->SetName(&vxgi.sdf, "vxgi.sdf");
device->CreateTexture(&desc, nullptr, &vxgi.sdf_temp);
device->SetName(&vxgi.sdf_temp, "vxgi.sdf_temp");
}
vxgi.clipmap_to_update = (vxgi.clipmap_to_update + 1) % VXGI_CLIPMAP_COUNT;
}
if (impostors.GetCount() > 0 && objects.GetCount() > 0)
{
impostor_ib_format = GetIndexBufferFormatRaw((uint32_t)objects.GetCount() * 4);
if (allocated_impostor_capacity < objects.GetCount())
{
allocated_impostor_capacity = uint32_t(objects.GetCount() * 2); // *2 to grow fast
GPUBufferDesc desc;
desc.usage = Usage::DEFAULT;
desc.bind_flags = BindFlag::INDEX_BUFFER | BindFlag::SHADER_RESOURCE | BindFlag::UNORDERED_ACCESS;
desc.misc_flags = ResourceMiscFlag::BUFFER_RAW | ResourceMiscFlag::TYPED_FORMAT_CASTING | ResourceMiscFlag::INDIRECT_ARGS | ResourceMiscFlag::NO_DEFAULT_DESCRIPTORS;
const uint64_t alignment =
device->GetMinOffsetAlignment(&desc) *
sizeof(IndirectDrawArgsIndexedInstanced) * // additional alignment
sizeof(MeshComponent::Vertex_POS32) // additional alignment
;
desc.size =
AlignTo(sizeof(IndirectDrawArgsIndexedInstanced), alignment) + // indirect args
AlignTo(allocated_impostor_capacity * sizeof(uint) * 6, alignment) + // indices (must overestimate here for 32-bit indices, because we create 16 bit and 32 bit descriptors)
AlignTo(allocated_impostor_capacity * sizeof(MeshComponent::Vertex_POS32) * 4, alignment) + // vertices
AlignTo(allocated_impostor_capacity * sizeof(MeshComponent::Vertex_NOR) * 4, alignment) + // vertices
AlignTo(allocated_impostor_capacity * sizeof(uint2), alignment) // impostordata
;
device->CreateBuffer(&desc, nullptr, &impostorBuffer);
device->SetName(&impostorBuffer, "impostorBuffer");
uint64_t buffer_offset = 0ull;
const uint32_t indirect_stride = sizeof(IndirectDrawArgsIndexedInstanced);
buffer_offset = AlignTo(buffer_offset, sizeof(IndirectDrawArgsIndexedInstanced)); // additional structured buffer alignment
buffer_offset = AlignTo(buffer_offset, alignment);
impostor_indirect.offset = buffer_offset;
impostor_indirect.size = sizeof(IndirectDrawArgsIndexedInstanced);
impostor_indirect.subresource_uav = device->CreateSubresource(&impostorBuffer, SubresourceType::UAV, impostor_indirect.offset, impostor_indirect.size, nullptr, &indirect_stride);
buffer_offset += impostor_indirect.size;
buffer_offset = AlignTo(buffer_offset, alignment);
Format format32 = Format::R32_UINT;
Format format16 = Format::R16_UINT;
impostor_ib32.offset = buffer_offset;
impostor_ib32.size = allocated_impostor_capacity * sizeof(uint32_t) * 6;
impostor_ib16.offset = buffer_offset;
impostor_ib16.size = allocated_impostor_capacity * sizeof(uint16_t) * 6;
impostor_ib32.subresource_srv = device->CreateSubresource(&impostorBuffer, SubresourceType::SRV, impostor_ib32.offset, impostor_ib32.size, &format32);
impostor_ib32.subresource_uav = device->CreateSubresource(&impostorBuffer, SubresourceType::UAV, impostor_ib32.offset, impostor_ib32.size, &format32);
impostor_ib32.descriptor_srv = device->GetDescriptorIndex(&impostorBuffer, SubresourceType::SRV, impostor_ib32.subresource_srv);
impostor_ib32.descriptor_uav = device->GetDescriptorIndex(&impostorBuffer, SubresourceType::UAV, impostor_ib32.subresource_uav);
buffer_offset += impostor_ib32.size;
impostor_ib16.subresource_srv = device->CreateSubresource(&impostorBuffer, SubresourceType::SRV, impostor_ib16.offset, impostor_ib16.size, &format16);
impostor_ib16.subresource_uav = device->CreateSubresource(&impostorBuffer, SubresourceType::UAV, impostor_ib16.offset, impostor_ib16.size, &format16);
impostor_ib16.descriptor_srv = device->GetDescriptorIndex(&impostorBuffer, SubresourceType::SRV, impostor_ib16.subresource_srv);
impostor_ib16.descriptor_uav = device->GetDescriptorIndex(&impostorBuffer, SubresourceType::UAV, impostor_ib16.subresource_uav);
buffer_offset = AlignTo(buffer_offset, alignment);
impostor_vb_pos.offset = buffer_offset;
impostor_vb_pos.size = allocated_impostor_capacity * sizeof(MeshComponent::Vertex_POS32) * 4;
impostor_vb_pos.subresource_srv = device->CreateSubresource(&impostorBuffer, SubresourceType::SRV, impostor_vb_pos.offset, impostor_vb_pos.size, &MeshComponent::Vertex_POS32::FORMAT);
impostor_vb_pos.subresource_uav = device->CreateSubresource(&impostorBuffer, SubresourceType::UAV, impostor_vb_pos.offset, impostor_vb_pos.size); // can't have RGB32F format for UAV!
impostor_vb_pos.descriptor_srv = device->GetDescriptorIndex(&impostorBuffer, SubresourceType::SRV, impostor_vb_pos.subresource_srv);
impostor_vb_pos.descriptor_uav = device->GetDescriptorIndex(&impostorBuffer, SubresourceType::UAV, impostor_vb_pos.subresource_uav);
buffer_offset += impostor_vb_pos.size;
buffer_offset = AlignTo(buffer_offset, alignment);
impostor_vb_nor.offset = buffer_offset;
impostor_vb_nor.size = allocated_impostor_capacity * sizeof(MeshComponent::Vertex_NOR) * 4;
impostor_vb_nor.subresource_srv = device->CreateSubresource(&impostorBuffer, SubresourceType::SRV, impostor_vb_nor.offset, impostor_vb_nor.size, &MeshComponent::Vertex_NOR::FORMAT);
impostor_vb_nor.subresource_uav = device->CreateSubresource(&impostorBuffer, SubresourceType::UAV, impostor_vb_nor.offset, impostor_vb_nor.size, &MeshComponent::Vertex_NOR::FORMAT);
impostor_vb_nor.descriptor_srv = device->GetDescriptorIndex(&impostorBuffer, SubresourceType::SRV, impostor_vb_nor.subresource_srv);
impostor_vb_nor.descriptor_uav = device->GetDescriptorIndex(&impostorBuffer, SubresourceType::UAV, impostor_vb_nor.subresource_uav);
buffer_offset += impostor_vb_nor.size;
buffer_offset = AlignTo(buffer_offset, alignment);
impostor_data.offset = buffer_offset;
impostor_data.size = allocated_impostor_capacity * sizeof(uint2);
impostor_data.subresource_srv = device->CreateSubresource(&impostorBuffer, SubresourceType::SRV, impostor_data.offset, impostor_data.size);
impostor_data.subresource_uav = device->CreateSubresource(&impostorBuffer, SubresourceType::UAV, impostor_data.offset, impostor_data.size);
impostor_data.descriptor_srv = device->GetDescriptorIndex(&impostorBuffer, SubresourceType::SRV, impostor_data.subresource_srv);
impostor_data.descriptor_uav = device->GetDescriptorIndex(&impostorBuffer, SubresourceType::UAV, impostor_data.subresource_uav);
buffer_offset += impostor_data.size;
}
}
// VXGI volume update:
// Note: this is using camera that the scene is associated with
{
VXGI::ClipMap& clipmap = vxgi.clipmaps[vxgi.clipmap_to_update];
clipmap.voxelsize = vxgi.clipmaps[0].voxelsize * (1u << vxgi.clipmap_to_update);
const float texelSize = clipmap.voxelsize * 2;
XMFLOAT3 center = XMFLOAT3(std::floor(camera.Eye.x / texelSize) * texelSize, std::floor(camera.Eye.y / texelSize) * texelSize, std::floor(camera.Eye.z / texelSize) * texelSize);
clipmap.offsetfromPrevFrame.x = int((clipmap.center.x - center.x) / texelSize);
clipmap.offsetfromPrevFrame.y = -int((clipmap.center.y - center.y) / texelSize);
clipmap.offsetfromPrevFrame.z = int((clipmap.center.z - center.z) / texelSize);
clipmap.center = center;
XMFLOAT3 extents = XMFLOAT3(vxgi.res * clipmap.voxelsize, vxgi.res * clipmap.voxelsize, vxgi.res * clipmap.voxelsize);
if (extents.x != clipmap.extents.x || extents.y != clipmap.extents.y || extents.z != clipmap.extents.z)
{
vxgi.pre_clear = true;
}
clipmap.extents = extents;
}
{
for (size_t voxelgridIndex = 0; voxelgridIndex < voxel_grids.GetCount(); ++voxelgridIndex)
{
wi::VoxelGrid& voxelgrid = voxel_grids[voxelgridIndex];
Entity entity = voxel_grids.GetEntity(voxelgridIndex);
const TransformComponent* transform = transforms.GetComponent(entity);
if (transform != nullptr)
{
voxelgrid.center = transform->GetPosition();
voxelgrid.set_voxelsize(transform->GetScale());
}
}
}
// Shader scene resources:
if (device->CheckCapability(GraphicsDeviceCapability::CACHE_COHERENT_UMA))
{
shaderscene.instancebuffer = device->GetDescriptorIndex(&instanceUploadBuffer[device->GetBufferIndex()], SubresourceType::SRV);
shaderscene.geometrybuffer = device->GetDescriptorIndex(&geometryUploadBuffer[device->GetBufferIndex()], SubresourceType::SRV);
shaderscene.materialbuffer = device->GetDescriptorIndex(&materialUploadBuffer[device->GetBufferIndex()], SubresourceType::SRV);
}
else
{
shaderscene.instancebuffer = device->GetDescriptorIndex(&instanceBuffer, SubresourceType::SRV);
shaderscene.geometrybuffer = device->GetDescriptorIndex(&geometryBuffer, SubresourceType::SRV);
shaderscene.materialbuffer = device->GetDescriptorIndex(&materialBuffer, SubresourceType::SRV);
}
shaderscene.meshletbuffer = device->GetDescriptorIndex(&meshletBuffer, SubresourceType::SRV);
if (weather.skyMap.IsValid())
{
shaderscene.globalenvmap = device->GetDescriptorIndex(&weather.skyMap.GetTexture(), SubresourceType::SRV, weather.skyMap.GetTextureSRGBSubresource());
}
else
{
shaderscene.globalenvmap = -1;
}
if (probes.GetCount() > 0 && probes[0].texture.IsValid())
{
shaderscene.globalprobe = device->GetDescriptorIndex(&probes[0].texture, SubresourceType::SRV);
}
else if (global_dynamic_probe.texture.IsValid())
{
shaderscene.globalprobe = device->GetDescriptorIndex(&global_dynamic_probe.texture, SubresourceType::SRV);
}
else
{
shaderscene.globalprobe = -1;
}
shaderscene.impostorInstanceOffset = impostorInstanceOffset;
shaderscene.TLAS = device->GetDescriptorIndex(&TLAS, SubresourceType::SRV);
shaderscene.BVH_counter = device->GetDescriptorIndex(&BVH.primitiveCounterBuffer, SubresourceType::SRV);
shaderscene.BVH_nodes = device->GetDescriptorIndex(&BVH.bvhNodeBuffer, SubresourceType::SRV);
shaderscene.BVH_primitives = device->GetDescriptorIndex(&BVH.primitiveBuffer, SubresourceType::SRV);
shaderscene.aabb_min = bounds.getMin();
shaderscene.aabb_max = bounds.getMax();
shaderscene.aabb_extents.x = abs(shaderscene.aabb_max.x - shaderscene.aabb_min.x);
shaderscene.aabb_extents.y = abs(shaderscene.aabb_max.y - shaderscene.aabb_min.y);
shaderscene.aabb_extents.z = abs(shaderscene.aabb_max.z - shaderscene.aabb_min.z);
shaderscene.aabb_extents_rcp.x = 1.0f / shaderscene.aabb_extents.x;
shaderscene.aabb_extents_rcp.y = 1.0f / shaderscene.aabb_extents.y;
shaderscene.aabb_extents_rcp.z = 1.0f / shaderscene.aabb_extents.z;
shaderscene.weather.sun_color = weather.sunColor;
shaderscene.weather.sun_direction = weather.sunDirection;
shaderscene.weather.most_important_light_index = weather.most_important_light_index;
shaderscene.weather.ambient = weather.ambient;
shaderscene.weather.sky_rotation_sin = std::sin(weather.sky_rotation);
shaderscene.weather.sky_rotation_cos = std::cos(weather.sky_rotation);
shaderscene.weather.fog.start = weather.fogStart;
shaderscene.weather.fog.density = weather.fogDensity;
shaderscene.weather.fog.height_start = weather.fogHeightStart;
shaderscene.weather.fog.height_end = weather.fogHeightEnd;
shaderscene.weather.horizon = weather.horizon;
shaderscene.weather.zenith = weather.zenith;
shaderscene.weather.sky_exposure = weather.skyExposure;
shaderscene.weather.wind.speed = weather.windSpeed;
shaderscene.weather.wind.randomness = weather.windRandomness;
shaderscene.weather.wind.wavesize = weather.windWaveSize;
shaderscene.weather.wind.direction = weather.windDirection;
shaderscene.weather.atmosphere = weather.atmosphereParameters;
shaderscene.weather.volumetric_clouds = weather.volumetricCloudParameters;
shaderscene.weather.ocean.water_color = weather.oceanParameters.waterColor;
shaderscene.weather.ocean.water_height = weather.oceanParameters.waterHeight;
shaderscene.weather.ocean.patch_size_rcp = 1.0f / weather.oceanParameters.patch_length;
shaderscene.weather.ocean.texture_displacementmap = device->GetDescriptorIndex(ocean.getDisplacementMap(), SubresourceType::SRV);
shaderscene.weather.ocean.texture_gradientmap = device->GetDescriptorIndex(ocean.getGradientMap(), SubresourceType::SRV);
shaderscene.weather.stars = weather.stars;
XMStoreFloat4x4(&shaderscene.weather.stars_rotation, XMMatrixRotationQuaternion(XMLoadFloat4(&weather.stars_rotation_quaternion)));
shaderscene.weather.rain_amount = weather.rain_amount;
shaderscene.weather.rain_length = weather.rain_length;
shaderscene.weather.rain_speed = weather.rain_speed;
shaderscene.weather.rain_scale = weather.rain_scale;
shaderscene.weather.rain_splash_scale = weather.rain_splash_scale;
shaderscene.weather.rain_color = weather.rain_color;
shaderscene.ddgi.grid_dimensions = ddgi.grid_dimensions;
shaderscene.ddgi.probe_count = ddgi.grid_dimensions.x * ddgi.grid_dimensions.y * ddgi.grid_dimensions.z;
shaderscene.ddgi.color_texture_resolution = uint2(ddgi.color_texture.desc.width, ddgi.color_texture.desc.height);
shaderscene.ddgi.color_texture_resolution_rcp = float2(1.0f / shaderscene.ddgi.color_texture_resolution.x, 1.0f / shaderscene.ddgi.color_texture_resolution.y);
shaderscene.ddgi.depth_texture_resolution = uint2(ddgi.depth_texture.desc.width, ddgi.depth_texture.desc.height);
shaderscene.ddgi.depth_texture_resolution_rcp = float2(1.0f / shaderscene.ddgi.depth_texture_resolution.x, 1.0f / shaderscene.ddgi.depth_texture_resolution.y);
shaderscene.ddgi.color_texture = device->GetDescriptorIndex(&ddgi.color_texture, SubresourceType::SRV);
shaderscene.ddgi.depth_texture = device->GetDescriptorIndex(&ddgi.depth_texture, SubresourceType::SRV);
shaderscene.ddgi.offset_texture = device->GetDescriptorIndex(&ddgi.offset_texture, SubresourceType::SRV);
shaderscene.ddgi.grid_min = ddgi.grid_min;
shaderscene.ddgi.grid_extents.x = abs(ddgi.grid_max.x - ddgi.grid_min.x);
shaderscene.ddgi.grid_extents.y = abs(ddgi.grid_max.y - ddgi.grid_min.y);
shaderscene.ddgi.grid_extents.z = abs(ddgi.grid_max.z - ddgi.grid_min.z);
shaderscene.ddgi.grid_extents_rcp.x = 1.0f / shaderscene.ddgi.grid_extents.x;
shaderscene.ddgi.grid_extents_rcp.y = 1.0f / shaderscene.ddgi.grid_extents.y;
shaderscene.ddgi.grid_extents_rcp.z = 1.0f / shaderscene.ddgi.grid_extents.z;
shaderscene.ddgi.smooth_backface = ddgi.smooth_backface;
shaderscene.ddgi.cell_size.x = shaderscene.ddgi.grid_extents.x / (ddgi.grid_dimensions.x - 1);
shaderscene.ddgi.cell_size.y = shaderscene.ddgi.grid_extents.y / (ddgi.grid_dimensions.y - 1);
shaderscene.ddgi.cell_size.z = shaderscene.ddgi.grid_extents.z / (ddgi.grid_dimensions.z - 1);
shaderscene.ddgi.cell_size_rcp.x = 1.0f / shaderscene.ddgi.cell_size.x;
shaderscene.ddgi.cell_size_rcp.y = 1.0f / shaderscene.ddgi.cell_size.y;
shaderscene.ddgi.cell_size_rcp.z = 1.0f / shaderscene.ddgi.cell_size.z;
shaderscene.ddgi.max_distance = std::max(shaderscene.ddgi.cell_size.x, std::max(shaderscene.ddgi.cell_size.y, shaderscene.ddgi.cell_size.z)) * 1.5f;
shaderscene.terrain.init();
if (terrains.GetCount() > 0)
{
shaderscene.terrain = terrains[0].GetShaderTerrain();
}
shaderscene.voxelgrid.init();
if (voxel_grids.GetCount() > 0)
{
VoxelGrid& voxelgrid = voxel_grids[0];
const uint64_t required_size = voxelgrid.voxels.size() * sizeof(uint64_t);
if (voxelgrid_gpu.desc.size < required_size)
{
GPUBufferDesc desc;
desc.size = required_size;
desc.bind_flags = BindFlag::SHADER_RESOURCE;
desc.misc_flags = ResourceMiscFlag::BUFFER_RAW;
device->CreateBuffer(&desc, nullptr, &voxelgrid_gpu);
device->SetName(&voxelgrid_gpu, "voxelgrid_gpu");
}
shaderscene.voxelgrid.buffer = device->GetDescriptorIndex(&voxelgrid_gpu, SubresourceType::SRV);
shaderscene.voxelgrid.resolution = voxelgrid.resolution;
shaderscene.voxelgrid.resolution_div4 = voxelgrid.resolution_div4;
shaderscene.voxelgrid.resolution_rcp = voxelgrid.resolution_rcp;
shaderscene.voxelgrid.center = voxelgrid.center;
shaderscene.voxelgrid.voxelSize = voxelgrid.voxelSize;
shaderscene.voxelgrid.voxelSize_rcp = voxelgrid.voxelSize_rcp;
}