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620 lines (525 loc) · 28.3 KB
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//*********************************************************
//
// Copyright 2020 Intel Corporation
//
// Permission is hereby granted, free of charge, to any
// person obtaining a copy of this software and associated
// documentation files(the "Software"), to deal in the Software
// without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to
// whom the Software is furnished to do so, subject to the
// following conditions :
// The above copyright notice and this permission notice 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.
//
//*********************************************************
#pragma once
#include "pch.h"
#include <filesystem>
#include <DirectXMath.h>
#include <wrl.h>
#include <string>
#include <shlwapi.h> // for PathFindExtension
#pragma comment(lib, "Shlwapi.lib")
#include "SceneObject.h"
#include "SharedConstants.h"
#include "Scene.h"
#include "TerrainGenerator.h"
#include "AssetUploader.h"
//-------------------------------------------------------------------------
// constructor
//-------------------------------------------------------
10BC0
------------------
SceneObjects::BaseObject::BaseObject(
const std::wstring& in_filename,
TileUpdateManager* in_pTileUpdateManager,
StreamingHeap* in_pStreamingHeap,
ID3D12Device* in_pDevice,
D3D12_CPU_DESCRIPTOR_HANDLE in_srvBaseCPU,
BaseObject* in_pSharedObject) : m_pTileUpdateManager(in_pTileUpdateManager)
{
//---------------------------------------
// create root signature
//---------------------------------------
if (in_pSharedObject)
{
m_rootSignature = in_pSharedObject->m_rootSignature;
m_rootSignatureFB = in_pSharedObject->m_rootSignatureFB;
m_pipelineState = in_pSharedObject->m_pipelineState;
m_pipelineStateFB = in_pSharedObject->m_pipelineStateFB;
}
else
{
//--------------------------------------------
// uav and srvs for streaming texture
//--------------------------------------------
std::vector<CD3DX12_DESCRIPTOR_RANGE1> ranges;
// these three descriptors are expected to be consecutive in the descriptor heap:
// t0: streaming/reserved/paired texture
// t1: min mip map
// u0: feedback map
// t0: streaming/reserved/paired texture
ranges.push_back(CD3DX12_DESCRIPTOR_RANGE1(D3D12_DESCRIPTOR_RANGE_TYPE_SRV, 1, 0, 0, D3D12_DESCRIPTOR_RANGE_FLAG_DATA_VOLATILE,
UINT(Descriptors::HeapOffsetTexture)));
// t1: min mip map
// the min mip view descriptor is "volatile" because it changes if the # of objects changes.
std::vector<CD3DX12_DESCRIPTOR_RANGE1> sharedRanges;
sharedRanges.push_back(CD3DX12_DESCRIPTOR_RANGE1(D3D12_DESCRIPTOR_RANGE_TYPE_SRV, 1, 1, 0, D3D12_DESCRIPTOR_RANGE_FLAG_DATA_VOLATILE | D3D12_DESCRIPTOR_RANGE_FLAG_DESCRIPTORS_VOLATILE, 0));
// b0: constant buffers
std::vector<CD3DX12_DESCRIPTOR_RANGE1> cbvRanges;
cbvRanges.push_back(CD3DX12_DESCRIPTOR_RANGE1(D3D12_DESCRIPTOR_RANGE_TYPE_CBV, 1, 0, 0, D3D12_DESCRIPTOR_RANGE_FLAG_DATA_STATIC_WHILE_SET_AT_EXECUTE, 0));
// s0: sampler
std::vector<CD3DX12_DESCRIPTOR_RANGE1> samplerRanges;
samplerRanges.push_back(CD3DX12_DESCRIPTOR_RANGE1(D3D12_DESCRIPTOR_RANGE_TYPE_SAMPLER, 1, 0, 0, D3D12_DESCRIPTOR_RANGE_FLAG_DESCRIPTORS_VOLATILE, 0));
std::vector<CD3DX12_ROOT_PARAMETER1> rootParameters;
rootParameters.resize((UINT)RootSigParams::NumParams);
//-----------------------------
// Root Signature Descriptor Tables & 32-bit constants
//-----------------------------
// per-object textures & UAVs
CD3DX12_ROOT_PARAMETER1 rootParam;
rootParam.InitAsDescriptorTable((UINT)ranges.size(), ranges.data(), D3D12_SHADER_VISIBILITY_PIXEL);
rootParameters[(UINT)RootSigParams::ParamObjectTextures] = rootParam;
// shared textures
rootParam.InitAsDescriptorTable((UINT)sharedRanges.size(), sharedRanges.data(), D3D12_SHADER_VISIBILITY_PIXEL);
rootParameters[(UINT)RootSigParams::ParamSharedTextures] = rootParam;
// constant buffers used by both vertex & pixel shaders
rootParam.InitAsDescriptorTable((UINT)cbvRanges.size(), cbvRanges.data(), D3D12_SHADER_VISIBILITY_ALL);
rootParameters[(UINT)RootSigParams::ParamConstantBuffers] = rootParam;
// samplers
rootParam.InitAsDescriptorTable((UINT)samplerRanges.size(), samplerRanges.data(), D3D12_SHADER_VISIBILITY_PIXEL);
rootParameters[(UINT)RootSigParams::ParamSamplers] = rootParam;
UINT num32BitValues = sizeof(ModelConstantData) / sizeof(UINT32);
rootParam.InitAsConstants(num32BitValues, 1, 0, D3D12_SHADER_VISIBILITY_ALL);
rootParameters[(UINT)RootSigParams::Param32BitConstants] = rootParam;
// root sig without feedback map bound
{
CD3DX12_VERSIONED_ROOT_SIGNATURE_DESC rootSignatureDesc;
rootSignatureDesc.Init_1_1((UINT)rootParameters.size(), rootParameters.data(), 0, nullptr, D3D12_ROOT_SIGNATURE_FLAG_ALLOW_INPUT_ASSEMBLER_INPUT_LAYOUT);
ComPtr<ID3DBlob> signature;
ComPtr<ID3DBlob> error;
ThrowIfFailed(D3D12SerializeVersionedRootSignature(&rootSignatureDesc, &signature, &error));
ThrowIfFailed(in_pDevice->CreateRootSignature(0, signature->GetBufferPointer(), signature->GetBufferSize(), IID_PPV_ARGS(&m_rootSignature)));
}
// root sig with feedback map bound
{
// add a UAV for the feedback map
ranges.push_back(CD3DX12_DESCRIPTOR_RANGE1(D3D12_DESCRIPTOR_RANGE_TYPE_UAV, 1, 0, 0, D3D12_DESCRIPTOR_RANGE_FLAG_DATA_VOLATILE,
UINT(Descriptors::HeapOffsetFeedback)));
// add uav range to previous root param
rootParam.InitAsDescriptorTable((UINT)ranges.size(), ranges.data(), D3D12_SHADER_VISIBILITY_PIXEL);
rootParameters[(UINT)RootSigParams::ParamObjectTextures] = rootParam;
// re-serialize
CD3DX12_VERSIONED_ROOT_SIGNATURE_DESC rootSignatureDesc;
rootSignatureDesc.Init_1_1((UINT)rootParameters.size(), rootParameters.data(), 0, nullptr, D3D12_ROOT_SIGNATURE_FLAG_ALLOW_INPUT_ASSEMBLER_INPUT_LAYOUT);
ComPtr<ID3DBlob> signature;
ComPtr<ID3DBlob> error;
ThrowIfFailed(D3D12SerializeVersionedRootSignature(&rootSignatureDesc, &signature, &error));
ThrowIfFailed(in_pDevice->CreateRootSignature(0, signature->GetBufferPointer(), signature->GetBufferSize(), IID_PPV_ARGS(&m_rootSignatureFB)));
}
}
//---------------------------------------
// create streaming resources
//---------------------------------------
{
m_srvUavCbvDescriptorSize = in_pDevice->GetDescriptorHandleIncrementSize(D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV);
// The tile update manager queries the streaming texture for its tile dimensions
// The feedback resource will be allocated with a mip region size matching the tile size
m_pStreamingResource = in_pTileUpdateManager->CreateStreamingResource(in_filename, in_pStreamingHeap);
// sampler feedback view
CD3DX12_CPU_DESCRIPTOR_HANDLE feedbackHandle(in_srvBaseCPU, (UINT)Descriptors::HeapOffsetFeedback, m_srvUavCbvDescriptorSize);
m_pStreamingResource->CreateFeedbackView(in_pDevice, feedbackHandle);
// texture view
CD3DX12_CPU_DESCRIPTOR_HANDLE textureHandle(in_srvBaseCPU, (UINT)Descriptors::HeapOffsetTexture, m_srvUavCbvDescriptorSize);
m_pStreamingResource->CreateStreamingView(in_pDevice, textureHandle);
}
}
//-------------------------------------------------------------------------
//-------------------------------------------------------------------------
void SceneObjects::BaseObject::CreatePipelineState(
const wchar_t* in_ps, const wchar_t* in_psFB, const wchar_t* in_vs,
ID3D12Device* in_pDevice, UINT in_sampleCount,
const D3D12_RASTERIZER_DESC& in_rasterizerDesc,
const D3D12_DEPTH_STENCIL_DESC& in_depthStencilDesc)
{
// Define the vertex input layout
D3D12_INPUT_ELEMENT_DESC inputElementDescs[] = {
{ "POS", 0, DXGI_FORMAT_R32G32B32_FLOAT, 0, 0, D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 },
{ "NORMAL", 0, DXGI_FORMAT_R32G32B32_FLOAT, 0, 12, D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 },
{ "TEX", 0, DXGI_FORMAT_R32G32_FLOAT, 0, 24, D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 },
};
std::wstring firstPassVsPath = GetAssetFullPath(in_vs);
std::wstring firstPassPsPath = GetAssetFullPath(in_ps);
std::ifstream vsFile(firstPassVsPath, std::fstream::binary);
std::vector<char> vsBytes = std::vector<char>((std::istreambuf_iterator<char>(vsFile)), std::istreambuf_iterator<char>());
std::ifstream psFile(firstPassPsPath, std::fstream::binary);
std::vector<char> psBytes = std::vector<char>((std::istreambuf_iterator<char>(psFile)), std::istreambuf_iterator<char>());
// Describe and create the graphics pipeline state object (PSO).
D3D12_GRAPHICS_PIPELINE_STATE_DESC psoDesc = {};
psoDesc.pRootSignature = m_rootSignature.Get();
psoDesc.VS.BytecodeLength = vsBytes.size();
psoDesc.VS.pShaderBytecode = vsBytes.data();
psoDesc.PS.BytecodeLength = psBytes.size();
psoDesc.PS.pShaderBytecode = psBytes.data();
psoDesc.BlendState = CD3DX12_BLEND_DESC(D3D12_DEFAULT);
psoDesc.SampleMask = UINT_MAX;
psoDesc.RasterizerState = in_rasterizerDesc;
psoDesc.DepthStencilState = in_depthStencilDesc;
psoDesc.InputLayout = { inputElementDescs, _countof(inputElementDescs) };
psoDesc.PrimitiveTopologyType = D3D12_PRIMITIVE_TOPOLOGY_TYPE_TRIANGLE;
psoDesc.NumRenderTargets = 1;
psoDesc.RTVFormats[0] = SharedConstants::SWAP_CHAIN_FORMAT;
psoDesc.DSVFormat = SharedConstants::DEPTH_FORMAT;
psoDesc.SampleDesc.Count = in_sampleCount;
ThrowIfFailed(in_pDevice->CreateGraphicsPipelineState(&psoDesc, IID_PPV_ARGS(&m_pipelineState)));
// create a second PSO that writes to a feedback map using our root signature with the feedback map UAV bound
{
psoDesc.pRootSignature = m_rootSignatureFB.Get();
firstPassPsPath = GetAssetFullPath(in_psFB);
std::ifstream psFeedback(firstPassPsPath, std::fstream::binary);
std::vector<char> psFeedbackBytes = std::vector<char>((std::istreambuf_iterator<char>(psFeedback)), std::istreambuf_iterator<char>());
psoDesc.PS.BytecodeLength = psFeedbackBytes.size();
psoDesc.PS.pShaderBytecode = psFeedbackBytes.data();
ThrowIfFailed(in_pDevice->CreateGraphicsPipelineState(&psoDesc, IID_PPV_ARGS(&m_pipelineStateFB)));
}
}
//-------------------------------------------------------------------------
//-------------------------------------------------------------------------
std::wstring SceneObjects::BaseObject::GetAssetFullPath(const std::wstring& in_filename)
{
WCHAR buffer[MAX_PATH];
GetModuleFileName(nullptr, buffer, MAX_PATH);
std::filesystem::path exePath(buffer);
return exePath.remove_filename().append(in_filename);
}
//-------------------------------------------------------------------------
//-------------------------------------------------------------------------
void SceneObjects::BaseObject::SetModelConstants(ModelConstantData& out_modelConstantData,
const DirectX::XMMATRIX&, const DirectX::XMMATRIX&)
{
out_modelConstantData.g_combinedTransform = m_combinedMatrix;
out_modelConstantData.g_worldTransform = m_matrix;
out_modelConstantData.g_minmipmapWidth = m_pStreamingResource->GetMinMipMapWidth();
out_modelConstantData.g_minmipmapHeight = m_pStreamingResource->GetMinMipMapHeight();
out_modelConstantData.g_minmipmapOffset = m_pStreamingResource->GetMinMipMapOffset();
}
//-------------------------------------------------------------------------
//-------------------------------------------------------------------------
void SceneObjects::BaseObject::CopyGeometry(const BaseObject* in_pObjectForSharedHeap)
{
m_lods.resize(in_pObjectForSharedHeap->m_lods.size());
for (UINT i = 0; i < m_lods.size(); i++)
{
m_lods[i].m_numIndices = in_pObjectForSharedHeap->m_lods[i].m_numIndices;
m_lods[i].m_indexBufferView = in_pObjectForSharedHeap->m_lods[i].m_indexBufferView;
m_lods[i].m_vertexBufferView = in_pObjectForSharedHeap->m_lods[i].m_vertexBufferView;
}
}
//-------------------------------------------------------------------------
//-------------------------------------------------------------------------
void SceneObjects::BaseObject::SetGeometry(ID3D12Resource* in_pVertexBuffer, UINT in_vertexSize, ID3D12Resource* in_pIndexBuffer, UINT in_lod)
{
if (in_lod >= m_lods.size())
{
m_lods.resize(in_lod + 1);
}
auto& lod = m_lods[in_lod];
lod.m_vertexBuffer = in_pVertexBuffer;
lod.m_indexBuffer = in_pIndexBuffer;
in_pVertexBuffer->Release();
in_pIndexBuffer->Release();
lod.m_numIndices = (UINT)in_pIndexBuffer->GetDesc().Width / sizeof(UINT32);
lod.m_vertexBufferView = { lod.m_vertexBuffer->GetGPUVirtualAddress(), (UINT)in_pVertexBuffer->GetDesc().Width, in_vertexSize};
lod.m_indexBufferView = { lod.m_indexBuffer->GetGPUVirtualAddress(), (UINT)in_pIndexBuffer->GetDesc().Width, DXGI_FORMAT_R32_UINT};
}
//-------------------------------------------------------------------------
// state common to multiple objects
// basic scene consists of a sky (1 or none), objects using feedback, and objects not using feedback
//-------------------------------------------------------------------------
void SceneObjects::BaseObject::SetCommonPipelineState(ID3D12GraphicsCommandList1* in_pCommandList, const SceneObjects::DrawParams& in_drawParams)
{
// if feedback is enabled, 2 things:
// 1. tell the tile update manager to queue a readback of the resolved feedback
// 2. draw the object with a shader that calls WriteSamplerFeedback()
if (m_feedbackEnabled)
{
SetRootSigPsoFB(in_pCommandList);
}
else
{
SetRootSigPso(in_pCommandList);
}
in_pCommandList->IASetPrimitiveTopology(D3D_PRIMITIVE_TOPOLOGY_TRIANGLELIST);
// shared min mip map resource
in_pCommandList->SetGraphicsRootDescriptorTable((UINT)SceneObjects::RootSigParams::ParamSharedTextures, in_drawParams.m_sharedMinMipMap);
// frame constant buffer
in_pCommandList->SetGraphicsRootDescriptorTable((UINT)SceneObjects::RootSigParams::ParamConstantBuffers, in_drawParams.m_constantBuffers);
// samplers
in_pCommandList->SetGraphicsRootDescriptorTable((UINT)SceneObjects::RootSigParams::ParamSamplers, in_drawParams.m_samplers);
}
//-------------------------------------------------------------------------
//-------------------------------------------------------------------------
void SceneObjects::BaseObject::Draw(ID3D12GraphicsCommandList1* in_pCommandList, const SceneObjects::DrawParams& in_drawParams)
{
//-------------------------------------------
// draw object to multi-sampled rendertarget
//-------------------------------------------
if (m_pStreamingResource->GetPackedMipsResident())
{
// choose LoD if applicable
UINT lod = 0;
if (m_lods.size() > 1)
{
DirectX::XMVECTOR eye = in_drawParams.m_viewInverse.r[3];
DirectX::XMVECTOR pos = m_matrix.r[3];
DirectX::XMVECTOR distance = DirectX::XMVectorSubtract(pos, eye);
distance = DirectX::XMVector3LengthEst(distance);
// spheres behind the view won't be visible
if (DirectX::XMVectorGetX(distance) < 0)
{
lod = UINT(m_lods.size() - 1);
}
else
{
// FIXME? could store bounding sphere diameter in object
DirectX::XMVECTOR scale = DirectX::XMVector3LengthEst(m_matrix.r[0]);
float objectSize = DirectX::XMVectorGetX(scale);
float distanceToEye = DirectX::XMVectorGetX(distance);
// slow lod progression with distance
distanceToEye = std::powf(distanceToEye, 0.95f);
float lodBias = 0.1f * (float)SharedConstants::SPHERE_LOD_BIAS;
float ratio = distanceToEye / (objectSize * lodBias);
// clamp to the number of lods
lod = std::min((UINT)m_lods.size() - 1, UINT(ratio));
}
}
const auto& geometry = m_lods[lod];
if (m_feedbackEnabled)
{
auto feedbackDescriptor = CD3DX12_GPU_DESCRIPTOR_HANDLE(in_drawParams.m_srvBaseGPU,
UINT(SceneObjects::Descriptors::HeapOffsetFeedback), m_srvUavCbvDescriptorSize);
m_pTileUpdateManager->QueueFeedback(GetStreamingResource(), feedbackDescriptor);
}
// uavs and srvs
in_pCommandList->SetGraphicsRootDescriptorTable((UINT)RootSigParams::ParamObjectTextures, in_drawParams.m_srvBaseGPU);
ModelConstantData modelConstantData{};
SetModelConstants(modelConstantData, in_drawParams.m_projection, in_drawParams.m_view);
UINT num32BitValues = sizeof(ModelConstantData) / sizeof(UINT32);
in_pCommandList->SetGraphicsRoot32BitConstants((UINT)RootSigParams::Param32BitConstants, num32BitValues, &modelConstantData, 0);
in_pCommandList->IASetIndexBuffer(&geometry.m_indexBufferView);
in_pCommandList->IASetVertexBuffers(0, 1, &geometry.m_vertexBufferView);
in_pCommandList->DrawIndexedInstanced(geometry.m_numIndices, 1, 0, 0, 0);
}
}
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
void SceneObjects::CreateSphereResources(
ID3D12Resource** out_ppVertexBuffer, ID3D12Resource** out_ppIndexBuffer,
ID3D12Device* in_pDevice, const SphereGen::Properties& in_sphereProperties,
AssetUploader& in_assetUploader)
{
std::vector<SphereGen::Vertex> sphereVerts;
std::vector<UINT32> sphereIndices;
SphereGen::Create(sphereVerts, sphereIndices, in_sphereProperties);
// build vertex buffer
{
UINT vertexBufferSize = UINT(sphereVerts.size()) * sizeof(sphereVerts[0]);
const auto heapProperties = CD3DX12_HEAP_PROPERTIES(D3D12_HEAP_TYPE_DEFAULT);
const auto resourceDesc = CD3DX12_RESOURCE_DESC::Buffer(vertexBufferSize);
ThrowIfFailed(in_pDevice->CreateCommittedResource(
&heapProperties,
D3D12_HEAP_FLAG_NONE,
&resourceDesc,
D3D12_RESOURCE_STATE_COMMON,
nullptr,
IID_PPV_ARGS(out_ppVertexBuffer)));
in_assetUploader.SubmitRequest(*out_ppVertexBuffer, sphereVerts.data(), vertexBufferSize,
D3D12_RESOURCE_STATE_COMMON, D3D12_RESOURCE_STATE_VERTEX_AND_CONSTANT_BUFFER);
}
// build index buffer
{
UINT indexBufferSize = UINT(sphereIndices.size()) * sizeof(sphereIndices[0]);
const auto heapProperties = CD3DX12_HEAP_PROPERTIES(D3D12_HEAP_TYPE_DEFAULT);
const auto resourceDesc = CD3DX12_RESOURCE_DESC::Buffer(indexBufferSize);
ThrowIfFailed(in_pDevice->CreateCommittedResource(
&heapProperties,
D3D12_HEAP_FLAG_NONE,
&resourceDesc,
D3D12_RESOURCE_STATE_COMMON,
nullptr,
IID_PPV_ARGS(out_ppIndexBuffer)));
in_assetUploader.SubmitRequest(*out_ppIndexBuffer, sphereIndices.data(), indexBufferSize,
D3D12_RESOURCE_STATE_COMMON, D3D12_RESOURCE_STATE_INDEX_BUFFER);
}
}
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
void SceneObjects::CreateSphere(SceneObjects::BaseObject* out_pObject,
ID3D12Device* in_pDevice, AssetUploader& in_assetUploader,
const SphereGen::Properties& in_sphereProperties,
UINT in_numLods)
{
const float lodStepFactor = 1.0f / in_numLods;
float lodScaleFactor = 1.0f;
SphereGen::Properties sphereProperties = in_sphereProperties;
for (UINT lod = 0; lod < in_numLods; lod++)
{
sphereProperties.m_numLat = UINT(in_sphereProperties.m_numLat * lodScaleFactor);
sphereProperties.m_numLong = UINT(in_sphereProperties.m_numLong * lodScaleFactor);
lodScaleFactor -= lodStepFactor;
ID3D12Resource* pVertexBuffer{ nullptr };
ID3D12Resource* pIndexBuffer{ nullptr };
CreateSphereResources(&pVertexBuffer, &pIndexBuffer, in_pDevice, sphereProperties, in_assetUploader);
out_pObject->SetGeometry(pVertexBuffer, (UINT)sizeof(SphereGen::Vertex), pIndexBuffer, lod);
}
}
//=========================================================================
//=========================================================================
SceneObjects::Terrain::Terrain(const std::wstring& in_filename,
TileUpdateManager* in_pTileUpdateManager,
StreamingHeap* in_pStreamingHeap,
ID3D12Device* in_pDevice,
UINT in_sampleCount,
D3D12_CPU_DESCRIPTOR_HANDLE in_srvBaseCPU,
const CommandLineArgs& in_args,
AssetUploader& in_assetUploader) :
BaseObject(in_filename, in_pTileUpdateManager, in_pStreamingHeap,
in_pDevice, in_srvBaseCPU, nullptr)
{
D3D12_RASTERIZER_DESC rasterizerDesc = CD3DX12_RASTERIZER_DESC(D3D12_DEFAULT);
D3D12_DEPTH_STENCIL_DESC depthStencilDesc = CD3DX12_DEPTH_STENCIL_DESC(D3D12_DEFAULT);
CreatePipelineState(L"terrainPS.cso", L"terrainPS-FB.cso", L"terrainVS.cso", in_pDevice, in_sampleCount, rasterizerDesc, depthStencilDesc);
D3D12_INDEX_BUFFER_VIEW indexBufferView{};
D3D12_VERTEX_BUFFER_VIEW vertexBufferView{};
ID3D12Resource* pVertexBuffer{ nullptr };
ID3D12Resource* pIndexBuffer{ nullptr };
TerrainGenerator mesh(in_args.m_terrainParams);
// build vertex buffer
{
auto& vertices = mesh.GetVertices();
UINT vertexBufferSize = UINT(vertices.size() * sizeof(vertices[0]));
const auto heapProperties = CD3DX12_HEAP_PROPERTIES(D3D12_HEAP_TYPE_DEFAULT);
const auto resourceDesc = CD3DX12_RESOURCE_DESC::Buffer(vertexBufferSize);
ThrowIfFailed(in_pDevice->CreateCommittedResource(
&heapProperties,
D3D12_HEAP_FLAG_NONE,
&resourceDesc,
D3D12_RESOURCE_STATE_COMMON,
nullptr,
IID_PPV_ARGS(&pVertexBuffer)));
in_assetUploader.SubmitRequest(pVertexBuffer, mesh.GetVertices().data(), vertexBufferSize,
D3D12_RESOURCE_STATE_COMMON, D3D12_RESOURCE_STATE_VERTEX_AND_CONSTANT_BUFFER);
}
// build index buffer
{
const auto heapProperties = CD3DX12_HEAP_PROPERTIES(D3D12_HEAP_TYPE_DEFAULT);
const auto resourceDesc = CD3DX12_RESOURCE_DESC::Buffer(mesh.GetIndexBufferSize());
ThrowIfFailed(in_pDevice->CreateCommittedResource(
&heapProperties,
D3D12_HEAP_FLAG_NONE,
&resourceDesc,
D3D12_RESOURCE_STATE_COMMON,
nullptr,
IID_PPV_ARGS(&pIndexBuffer)));
std::vector<BYTE> indices(mesh.GetIndexBufferSize());
mesh.GenerateIndices((UINT*)indices.data());
in_assetUploader.SubmitRequest(pIndexBuffer, indices.data(), indices.size(),
D3D12_RESOURCE_STATE_COMMON, D3D12_RESOURCE_STATE_INDEX_BUFFER);
}
SetGeometry(pVertexBuffer, (UINT)sizeof(TerrainGenerator::Vertex), pIndexBuffer);
}
//-------------------------------------------------------------------------
//-------------------------------------------------------------------------
ID3D12Device* SceneObjects::BaseObject::GetDevice()
{
ComPtr<ID3D12Device> device;
m_pStreamingResource->GetTiledResource()->GetDevice(IID_PPV_ARGS(&device));
return device.Get();
}
//-------------------------------------------------------------------------
// rotate object around a custom axis.
//-------------------------------------------------------------------------
void SceneObjects::BaseObject::Spin(float in_radians)
{
m_matrix = DirectX::XMMatrixRotationAxis(m_axis, in_radians) * m_matrix;
}
//=========================================================================
// planets have multiple LoDs
// Texture Coordinates may optionally be mirrored in U
//=========================================================================
SceneObjects::Planet::Planet(const std::wstring& in_filename,
TileUpdateManager* in_pTileUpdateManager,
StreamingHeap* in_pStreamingHeap,
ID3D12Device* in_pDevice, AssetUploader& in_assetUploader,
UINT in_sampleCount,
D3D12_CPU_DESCRIPTOR_HANDLE in_srvBaseCPU,
const SphereGen::Properties& in_sphereProperties) :
BaseObject(in_filename, in_pTileUpdateManager, in_pStreamingHeap,
in_pDevice, in_srvBaseCPU, nullptr)
{
D3D12_RASTERIZER_DESC rasterizerDesc = CD3DX12_RASTERIZER_DESC(D3D12_DEFAULT);
D3D12_DEPTH_STENCIL_DESC depthStencilDesc = CD3DX12_DEPTH_STENCIL_DESC(D3D12_DEFAULT);
CreatePipelineState(L"terrainPS.cso", L"terrainPS-FB.cso", L"terrainVS.cso", in_pDevice, in_sampleCount, rasterizerDesc, depthStencilDesc);
const UINT numLevelsOfDetail = SharedConstants::NUM_SPHERE_LEVELS_OF_DETAIL;
CreateSphere(this, in_pDevice, in_assetUploader, in_sphereProperties, numLevelsOfDetail);
}
//-------------------------------------------------------------------------
//-------------------------------------------------------------------------
SceneObjects::Planet::Planet(const std::wstring& in_filename,
StreamingHeap* in_pStreamingHeap,
D3D12_CPU_DESCRIPTOR_HANDLE in_srvBaseCPU,
Planet* in_pSharedObject) :
BaseObject(in_filename, in_pSharedObject->m_pTileUpdateManager, in_pStreamingHeap,
in_pSharedObject->GetDevice(), in_srvBaseCPU, in_pSharedObject)
{
CopyGeometry(in_pSharedObject);
}
//=============================================================================
// sky is like a planet with front culling instead of backface culling
// it is always positioned around 0,0,0. The camera only rotates relative to the sky
// it has only 1 LoD
// shading is much simpler: no lighting
//=============================================================================
SceneObjects::Sky::Sky(const std::wstring& in_filename,
TileUpdateManager* in_pTileUpdateManager,
StreamingHeap* in_pStreamingHeap,
ID3D12Device* in_pDevice, AssetUploader& in_assetUploader,
UINT in_sampleCount,
D3D12_CPU_DESCRIPTOR_HANDLE in_srvBaseCPU) :
BaseObject(in_filename, in_pTileUpdateManager, in_pStreamingHeap,
in_pDevice, in_srvBaseCPU, nullptr)
{
D3D12_RASTERIZER_DESC rasterizerDesc = CD3DX12_RASTERIZER_DESC(D3D12_DEFAULT);
rasterizerDesc.CullMode = D3D12_CULL_MODE_FRONT;
D3D12_DEPTH_STENCIL_DESC depthStencilDesc = CD3DX12_DEPTH_STENCIL_DESC(D3D12_DEFAULT);
depthStencilDesc.DepthEnable = false;
CreatePipelineState(L"skyPS.cso", L"skyPS-FB.cso", L"skyVS.cso", in_pDevice, in_sampleCount, rasterizerDesc, depthStencilDesc);
SphereGen::Properties sphereProperties;
sphereProperties.m_numLong = 80;
sphereProperties.m_numLat = 81;
sphereProperties.m_mirrorU = true;
sphereProperties.m_topBottom = true;
CreateSphere(this, in_pDevice, in_assetUploader, sphereProperties);
}
//-------------------------------------------------------------------------
//-------------------------------------------------------------------------
void SceneObjects::Sky::SetModelConstants(ModelConstantData& out_modelConstantData,
const DirectX::XMMATRIX& in_projection, const DirectX::XMMATRIX& in_view)
{
DirectX::XMMATRIX view = in_view;
view.r[3] = DirectX::XMVectorSet(0, 0, 0, 1);
out_modelConstantData.g_combinedTransform = m_matrix * view * in_projection;
out_modelConstantData.g_worldTransform = DirectX::XMMatrixIdentity();
out_modelConstantData.g_minmipmapWidth = m_pStreamingResource->GetMinMipMapWidth();
out_modelConstantData.g_minmipmapHeight = m_pStreamingResource->GetMinMipMapHeight();
out_modelConstantData.g_minmipmapOffset = m_pStreamingResource->GetMinMipMapOffset();
}