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FeatureDemo.cpp
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/*
* Copyright (c) 2014-2021, NVIDIA CORPORATION. All rights reserved.
*
* 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.
*/
#include <string>
#include <vector>
#include <memory>
#include <chrono>
#include <donut/core/vfs/VFS.h>
#include <donut/core/log.h>
#include <donut/core/string_utils.h>
#include <donut/engine/CommonRenderPasses.h>
#include <donut/engine/ConsoleInterpreter.h>
#include <donut/engine/ConsoleObjects.h>
#include <donut/engine/FramebufferFactory.h>
#include <donut/engine/Scene.h>
#include <donut/engine/ShaderFactory.h>
#include <donut/engine/TextureCache.h>
#include <donut/render/BloomPass.h>
#include <donut/render/CascadedShadowMap.h>
#include <donut/render/DeferredLightingPass.h>
#include <donut/render/DepthPass.h>
#include <donut/render/DrawStrategy.h>
#include <donut/render/ForwardShadingPass.h>
#include <donut/render/GBuffer.h>
#include <donut/render/GBufferFillPass.h>
#include <donut/render/LightProbeProcessingPass.h>
#include <donut/render/PixelReadbackPass.h>
#include <donut/render/SkyPass.h>
#include <donut/render/SsaoPass.h>
#include <donut/render/TemporalAntiAliasingPass.h>
#include <donut/render/ToneMappingPasses.h>
#include <donut/render/MipMapGenPass.h>
#include <donut/app/ApplicationBase.h>
#include <donut/app/UserInterfaceUtils.h>
#include <donut/app/Camera.h>
#include <donut/app/DeviceManager.h>
#include <donut/app/imgui_console.h>
#include <donut/app/imgui_renderer.h>
#include <nvrhi/utils.h>
#include <nvrhi/common/misc.h>
#ifdef DONUT_WITH_TASKFLOW
#include <taskflow/taskflow.hpp>
#endif
using namespace donut;
using namespace donut::math;
using namespace donut::app;
using namespace donut::vfs;
using namespace donut::engine;
using namespace donut::render;
static bool g_PrintSceneGraph = false;
static bool g_PrintFormats = false;
class RenderTargets : public GBufferRenderTargets
{
public:
nvrhi::TextureHandle HdrColor;
nvrhi::TextureHandle LdrColor;
nvrhi::TextureHandle MaterialIDs;
nvrhi::TextureHandle ResolvedColor;
nvrhi::TextureHandle TemporalFeedback1;
nvrhi::TextureHandle TemporalFeedback2;
nvrhi::TextureHandle AmbientOcclusion;
nvrhi::HeapHandle Heap;
std::shared_ptr<FramebufferFactory> ForwardFramebuffer;
std::shared_ptr<FramebufferFactory> HdrFramebuffer;
std::shared_ptr<FramebufferFactory> LdrFramebuffer;
std::shared_ptr<FramebufferFactory> ResolvedFramebuffer;
std::shared_ptr<FramebufferFactory> MaterialIDFramebuffer;
void Init(
nvrhi::IDevice* device,
dm::uint2 size,
dm::uint sampleCount,
bool enableMotionVectors,
bool useReverseProjection) override
{
GBufferRenderTargets::Init(device, size, sampleCount, enableMotionVectors, useReverseProjection);
nvrhi::TextureDesc desc;
desc.width = size.x;
desc.height = size.y;
desc.isRenderTarget = true;
desc.useClearValue = true;
desc.clearValue = nvrhi::Color(1.f);
desc.sampleCount = sampleCount;
desc.dimension = sampleCount > 1 ? nvrhi::TextureDimension::Texture2DMS : nvrhi::TextureDimension::Texture2D;
desc.keepInitialState = true;
desc.isVirtual = device->queryFeatureSupport(nvrhi::Feature::VirtualResources);
desc.clearValue = nvrhi::Color(0.f);
desc.isTypeless = false;
desc.isUAV = sampleCount == 1;
desc.format = nvrhi::Format::RGBA16_FLOAT;
desc.initialState = nvrhi::ResourceStates::RenderTarget;
desc.debugName = "HdrColor";
HdrColor = device->createTexture(desc);
desc.format = nvrhi::Format::RG16_UINT;
desc.isUAV = false;
desc.debugName = "MaterialIDs";
MaterialIDs = device->createTexture(desc);
// The render targets below this point are non-MSAA
desc.sampleCount = 1;
desc.dimension = nvrhi::TextureDimension::Texture2D;
desc.format = nvrhi::Format::RGBA16_FLOAT;
desc.isUAV = true;
desc.mipLevels = uint32_t(floorf(::log2f(float(std::max(desc.width, desc.height)))) + 1.f); // Used to test the MipMapGen pass
desc.debugName = "ResolvedColor";
ResolvedColor = device->createTexture(desc);
desc.format = nvrhi::Format::RGBA16_SNORM;
desc.mipLevels = 1;
desc.debugName = "TemporalFeedback1";
TemporalFeedback1 = device->createTexture(desc);
desc.debugName = "TemporalFeedback2";
TemporalFeedback2 = device->createTexture(desc);
desc.format = nvrhi::Format::SRGBA8_UNORM;
desc.isUAV = false;
desc.debugName = "LdrColor";
LdrColor = device->createTexture(desc);
desc.format = nvrhi::Format::R8_UNORM;
desc.isUAV = true;
desc.debugName = "AmbientOcclusion";
AmbientOcclusion = device->createTexture(desc);
if (desc.isVirtual)
{
uint64_t heapSize = 0;
nvrhi::ITexture* const textures[] = {
HdrColor,
MaterialIDs,
ResolvedColor,
TemporalFeedback1,
TemporalFeedback2,
LdrColor,
AmbientOcclusion
};
for (auto texture : textures)
{
nvrhi::MemoryRequirements memReq = device->getTextureMemoryRequirements(texture);
heapSize = nvrhi::align(heapSize, memReq.alignment);
heapSize += memReq.size;
}
nvrhi::HeapDesc heapDesc;
heapDesc.type = nvrhi::HeapType::DeviceLocal;
heapDesc.capacity = heapSize;
heapDesc.debugName = "RenderTargetHeap";
Heap = device->createHeap(heapDesc);
uint64_t offset = 0;
for (auto texture : textures)
{
nvrhi::MemoryRequirements memReq = device->getTextureMemoryRequirements(texture);
offset = nvrhi::align(offset, memReq.alignment);
device->bindTextureMemory(texture, Heap, offset);
offset += memReq.size;
}
}
ForwardFramebuffer = std::make_shared<FramebufferFactory>(device);
ForwardFramebuffer->RenderTargets = { HdrColor };
ForwardFramebuffer->DepthTarget = Depth;
HdrFramebuffer = std::make_shared<FramebufferFactory>(device);
HdrFramebuffer->RenderTargets = { HdrColor };
LdrFramebuffer = std::make_shared<FramebufferFactory>(device);
LdrFramebuffer->RenderTargets = { LdrColor };
ResolvedFramebuffer = std::make_shared<FramebufferFactory>(device);
ResolvedFramebuffer->RenderTargets = { ResolvedColor };
MaterialIDFramebuffer = std::make_shared<FramebufferFactory>(device);
MaterialIDFramebuffer->RenderTargets = { MaterialIDs };
MaterialIDFramebuffer->DepthTarget = Depth;
}
[[nodiscard]] bool IsUpdateRequired(uint2 size, uint sampleCount) const
{
if (any(m_Size != size) || m_SampleCount != sampleCount)
return true;
return false;
}
void Clear(nvrhi::ICommandList* commandList) override
{
GBufferRenderTargets::Clear(commandList);
commandList->clearTextureFloat(HdrColor, nvrhi::AllSubresources, nvrhi::Color(0.f));
}
};
enum class AntiAliasingMode
{
NONE,
TEMPORAL,
MSAA_2X,
MSAA_4X,
MSAA_8X
};
struct UIData
{
bool ShowUI = true;
bool ShowConsole = false;
bool UseDeferredShading = true;
bool Stereo = false;
bool EnableSsao = true;
SsaoParameters SsaoParams;
ToneMappingParameters ToneMappingParams;
TemporalAntiAliasingParameters TemporalAntiAliasingParams;
SkyParameters SkyParams;
enum AntiAliasingMode AntiAliasingMode = AntiAliasingMode::TEMPORAL;
enum TemporalAntiAliasingJitter TemporalAntiAliasingJitter = TemporalAntiAliasingJitter::MSAA;
bool EnableVsync = true;
bool ShaderReoladRequested = false;
bool EnableProceduralSky = true;
bool EnableBloom = true;
float BloomSigma = 32.f;
float BloomAlpha = 0.05f;
bool EnableTranslucency = true;
bool EnableMaterialEvents = false;
bool EnableShadows = true;
float AmbientIntensity = 1.0f;
bool EnableLightProbe = true;
float LightProbeDiffuseScale = 1.f;
float LightProbeSpecularScale = 1.f;
float CsmExponent = 4.f;
bool DisplayShadowMap = false;
bool UseThirdPersonCamera = false;
bool EnableAnimations = false;
bool TestMipMapGen = false;
std::shared_ptr<Material> SelectedMaterial;
std::shared_ptr<SceneGraphNode> SelectedNode;
std::string ScreenshotFileName;
std::shared_ptr<SceneCamera> ActiveSceneCamera;
};
class FeatureDemo : public ApplicationBase
{
private:
typedef ApplicationBase Super;
std::shared_ptr<RootFileSystem> m_RootFs;
std::shared_ptr<NativeFileSystem> m_NativeFs;
std::vector<std::string> m_SceneFilesAvailable;
std::string m_CurrentSceneName;
std::filesystem::path m_SceneDir;
std::shared_ptr<Scene> m_Scene;
std::shared_ptr<ShaderFactory> m_ShaderFactory;
std::shared_ptr<DirectionalLight> m_SunLight;
std::shared_ptr<CascadedShadowMap> m_ShadowMap;
std::shared_ptr<FramebufferFactory> m_ShadowFramebuffer;
std::shared_ptr<DepthPass> m_ShadowDepthPass;
std::shared_ptr<InstancedOpaqueDrawStrategy> m_OpaqueDrawStrategy;
std::shared_ptr<TransparentDrawStrategy> m_TransparentDrawStrategy;
std::unique_ptr<RenderTargets> m_RenderTargets;
std::shared_ptr<ForwardShadingPass> m_ForwardPass;
std::unique_ptr<GBufferFillPass> m_GBufferPass;
std::unique_ptr<DeferredLightingPass> m_DeferredLightingPass;
std::unique_ptr<SkyPass> m_SkyPass;
std::unique_ptr<TemporalAntiAliasingPass> m_TemporalAntiAliasingPass;
std::unique_ptr<BloomPass> m_BloomPass;
std::unique_ptr<ToneMappingPass> m_ToneMappingPass;
std::unique_ptr<SsaoPass> m_SsaoPass;
std::shared_ptr<LightProbeProcessingPass> m_LightProbePass;
std::unique_ptr<MaterialIDPass> m_MaterialIDPass;
std::unique_ptr<PixelReadbackPass> m_PixelReadbackPass;
std::unique_ptr<MipMapGenPass> m_MipMapGenPass;
std::shared_ptr<IView> m_View;
std::shared_ptr<IView> m_ViewPrevious;
nvrhi::CommandListHandle m_CommandList;
bool m_PreviousViewsValid = false;
FirstPersonCamera m_FirstPersonCamera;
ThirdPersonCamera m_ThirdPersonCamera;
BindingCache m_BindingCache;
float m_CameraVerticalFov = 60.f;
float3 m_AmbientTop = 0.f;
float3 m_AmbientBottom = 0.f;
uint2 m_PickPosition = 0u;
bool m_Pick = false;
std::vector<std::shared_ptr<LightProbe>> m_LightProbes;
nvrhi::TextureHandle m_LightProbeDiffuseTexture;
nvrhi::TextureHandle m_LightProbeSpecularTexture;
float m_WallclockTime = 0.f;
UIData& m_ui;
public:
FeatureDemo(DeviceManager* deviceManager, UIData& ui, const std::string& sceneName)
: Super(deviceManager)
, m_ui(ui)
, m_BindingCache(deviceManager->GetDevice())
{
m_RootFs = std::make_shared<RootFileSystem>();
std::filesystem::path mediaDir = app::GetDirectoryWithExecutable().parent_path() / "media";
std::filesystem::path frameworkShaderDir = app::GetDirectoryWithExecutable() / "shaders/framework" / app::GetShaderTypeName(GetDevice()->getGraphicsAPI());
m_RootFs->mount("/media", mediaDir);
m_RootFs->mount("/shaders/donut", frameworkShaderDir);
m_NativeFs = std::make_shared<NativeFileSystem>();
m_SceneDir = mediaDir / "glTF-Sample-Assets/Models/";
m_SceneFilesAvailable = FindScenes(*m_NativeFs, m_SceneDir);
if (sceneName.empty() && m_SceneFilesAvailable.empty())
{
log::fatal("No scene file found in media folder '%s'\n"
"Please make sure that folder contains valid scene files.", m_SceneDir.generic_string().c_str());
}
m_TextureCache = std::make_shared<TextureCache>(GetDevice(), m_NativeFs, nullptr);
m_ShaderFactory = std::make_shared<ShaderFactory>(GetDevice(), m_RootFs, "/shaders");
m_CommonPasses = std::make_shared<CommonRenderPasses>(GetDevice(), m_ShaderFactory);
m_OpaqueDrawStrategy = std::make_shared<InstancedOpaqueDrawStrategy>();
m_TransparentDrawStrategy = std::make_shared<TransparentDrawStrategy>();
const nvrhi::Format shadowMapFormats[] = {
nvrhi::Format::D24S8,
nvrhi::Format::D32,
nvrhi::Format::D16,
nvrhi::Format::D32S8 };
const nvrhi::FormatSupport shadowMapFeatures =
nvrhi::FormatSupport::Texture |
nvrhi::FormatSupport::DepthStencil |
nvrhi::FormatSupport::ShaderLoad;
nvrhi::Format shadowMapFormat = nvrhi::utils::ChooseFormat(GetDevice(), shadowMapFeatures, shadowMapFormats, std::size(shadowMapFormats));
m_ShadowMap = std::make_shared<CascadedShadowMap>(GetDevice(), 2048, 4, 0, shadowMapFormat);
m_ShadowMap->SetupProxyViews();
m_ShadowFramebuffer = std::make_shared<FramebufferFactory>(GetDevice());
m_ShadowFramebuffer->DepthTarget = m_ShadowMap->GetTexture();
DepthPass::CreateParameters shadowDepthParams;
shadowDepthParams.slopeScaledDepthBias = 4.f;
shadowDepthParams.depthBias = 100;
m_ShadowDepthPass = std::make_shared<DepthPass>(GetDevice(), m_CommonPasses);
m_ShadowDepthPass->Init(*m_ShaderFactory, shadowDepthParams);
m_CommandList = GetDevice()->createCommandList();
m_FirstPersonCamera.SetMoveSpeed(3.0f);
m_ThirdPersonCamera.SetMoveSpeed(3.0f);
SetAsynchronousLoadingEnabled(true);
if (sceneName.empty())
SetCurrentSceneName(app::FindPreferredScene(m_SceneFilesAvailable, "Sponza.gltf"));
else
SetCurrentSceneName(sceneName);
CreateLightProbes(4);
}
std::shared_ptr<vfs::IFileSystem> GetRootFs() const
{
return m_RootFs;
}
BaseCamera& GetActiveCamera() const
{
return m_ui.UseThirdPersonCamera ? (BaseCamera&)m_ThirdPersonCamera : (BaseCamera&)m_FirstPersonCamera;
}
std::vector<std::string> const& GetAvailableScenes() const
{
return m_SceneFilesAvailable;
}
std::filesystem::path const& GetSceneDir() const
{
return m_SceneDir;
}
std::string GetCurrentSceneName() const
{
return m_CurrentSceneName;
}
void SetCurrentSceneName(const std::string& sceneName)
{
if (m_CurrentSceneName == sceneName)
return;
m_CurrentSceneName = sceneName;
BeginLoadingScene(m_NativeFs, m_CurrentSceneName);
}
void CopyActiveCameraToFirstPerson()
{
if (m_ui.ActiveSceneCamera)
{
dm::affine3 viewToWorld = m_ui.ActiveSceneCamera->GetViewToWorldMatrix();
dm::float3 cameraPos = viewToWorld.m_translation;
m_FirstPersonCamera.LookAt(cameraPos, cameraPos + viewToWorld.m_linear.row2, viewToWorld.m_linear.row1);
}
else if (m_ui.UseThirdPersonCamera)
{
m_FirstPersonCamera.LookAt(m_ThirdPersonCamera.GetPosition(), m_ThirdPersonCamera.GetPosition() + m_ThirdPersonCamera.GetDir(), m_ThirdPersonCamera.GetUp());
}
}
virtual bool KeyboardUpdate(int key, int scancode, int action, int mods) override
{
if (key == GLFW_KEY_ESCAPE && action == GLFW_PRESS)
{
m_ui.ShowUI = !m_ui.ShowUI;
return true;
}
if (key == GLFW_KEY_GRAVE_ACCENT && action == GLFW_PRESS)
{
m_ui.ShowConsole = !m_ui.ShowConsole;
return true;
}
if (key == GLFW_KEY_SPACE && action == GLFW_PRESS)
{
m_ui.EnableAnimations = !m_ui.EnableAnimations;
return true;
}
if (key == GLFW_KEY_T && action == GLFW_PRESS)
{
CopyActiveCameraToFirstPerson();
if (m_ui.ActiveSceneCamera)
{
m_ui.UseThirdPersonCamera = false;
m_ui.ActiveSceneCamera = nullptr;
}
else
{
m_ui.UseThirdPersonCamera = !m_ui.UseThirdPersonCamera;
}
return true;
}
if (!m_ui.ActiveSceneCamera)
GetActiveCamera().KeyboardUpdate(key, scancode, action, mods);
return true;
}
virtual bool MousePosUpdate(double xpos, double ypos) override
{
if (!m_ui.ActiveSceneCamera)
GetActiveCamera().MousePosUpdate(xpos, ypos);
m_PickPosition = uint2(static_cast<uint>(xpos), static_cast<uint>(ypos));
return true;
}
virtual bool MouseButtonUpdate(int button, int action, int mods) override
{
if (!m_ui.ActiveSceneCamera)
GetActiveCamera().MouseButtonUpdate(button, action, mods);
if (action == GLFW_PRESS && button == GLFW_MOUSE_BUTTON_2)
m_Pick = true;
return true;
}
virtual bool MouseScrollUpdate(double xoffset, double yoffset) override
{
if (!m_ui.ActiveSceneCamera)
GetActiveCamera().MouseScrollUpdate(xoffset, yoffset);
return true;
}
virtual void Animate(float fElapsedTimeSeconds) override
{
if (!m_ui.ActiveSceneCamera)
GetActiveCamera().Animate(fElapsedTimeSeconds);
if(m_ToneMappingPass)
m_ToneMappingPass->AdvanceFrame(fElapsedTimeSeconds);
if (IsSceneLoaded() && m_ui.EnableAnimations)
{
m_WallclockTime += fElapsedTimeSeconds;
for (const auto& anim : m_Scene->GetSceneGraph()->GetAnimations())
{
float duration = anim->GetDuration();
float integral;
float animationTime = std::modf(m_WallclockTime / duration, &integral) * duration;
(void)anim->Apply(animationTime);
}
}
}
virtual void SceneUnloading() override
{
if (m_ForwardPass) m_ForwardPass->ResetBindingCache();
if (m_DeferredLightingPass) m_DeferredLightingPass->ResetBindingCache();
if (m_GBufferPass) m_GBufferPass->ResetBindingCache();
if (m_LightProbePass) m_LightProbePass->ResetCaches();
if (m_ShadowDepthPass) m_ShadowDepthPass->ResetBindingCache();
m_BindingCache.Clear();
m_SunLight.reset();
m_ui.SelectedMaterial = nullptr;
m_ui.SelectedNode = nullptr;
for (auto probe : m_LightProbes)
{
probe->enabled = false;
}
}
virtual bool LoadScene(std::shared_ptr<IFileSystem> fs, const std::filesystem::path& fileName) override
{
using namespace std::chrono;
std::unique_ptr<engine::Scene> scene = std::make_unique<engine::Scene>(GetDevice(),
*m_ShaderFactory, fs, m_TextureCache, nullptr, nullptr);
auto startTime = high_resolution_clock::now();
if (scene->Load(fileName))
{
m_Scene = std::move(scene);
auto endTime = high_resolution_clock::now();
auto duration = duration_cast<milliseconds>(endTime - startTime).count();
log::info("Scene loading time: %llu ms", duration);
return true;
}
return false;
}
virtual void SceneLoaded() override
{
Super::SceneLoaded();
m_Scene->FinishedLoading(GetFrameIndex());
m_WallclockTime = 0.f;
m_PreviousViewsValid = false;
for (auto light : m_Scene->GetSceneGraph()->GetLights())
{
if (light->GetLightType() == LightType_Directional)
{
m_SunLight = std::static_pointer_cast<DirectionalLight>(light);
break;
}
}
if (!m_SunLight)
{
m_SunLight = std::make_shared<DirectionalLight>();
m_SunLight->angularSize = 0.53f;
m_SunLight->irradiance = 1.f;
auto node = std::make_shared<SceneGraphNode>();
node->SetLeaf(m_SunLight);
m_SunLight->SetDirection(dm::double3(0.1, -0.9, 0.1));
m_SunLight->SetName("Sun");
m_Scene->GetSceneGraph()->Attach(m_Scene->GetSceneGraph()->GetRootNode(), node);
}
auto cameras = m_Scene->GetSceneGraph()->GetCameras();
if (!cameras.empty())
{
m_ui.ActiveSceneCamera = cameras[0];
}
else
{
m_ui.ActiveSceneCamera.reset();
m_FirstPersonCamera.LookAt(
float3(0.f, 1.8f, 0.f),
float3(1.f, 1.8f, 0.f));
m_CameraVerticalFov = 60.f;
}
m_ThirdPersonCamera.SetRotation(dm::radians(135.f), dm::radians(20.f));
PointThirdPersonCameraAt(m_Scene->GetSceneGraph()->GetRootNode());
m_ui.UseThirdPersonCamera = string_utils::ends_with(m_CurrentSceneName, ".gltf")
|| string_utils::ends_with(m_CurrentSceneName, ".glb");
CopyActiveCameraToFirstPerson();
if (g_PrintSceneGraph)
PrintSceneGraph(m_Scene->GetSceneGraph()->GetRootNode());
}
void PointThirdPersonCameraAt(const std::shared_ptr<SceneGraphNode>& node)
{
dm::box3 bounds = node->GetGlobalBoundingBox();
m_ThirdPersonCamera.SetTargetPosition(bounds.center());
float radius = length(bounds.diagonal()) * 0.5f;
float distance = radius / sinf(dm::radians(m_CameraVerticalFov * 0.5f));
m_ThirdPersonCamera.SetDistance(distance);
m_ThirdPersonCamera.Animate(0.f);
}
bool IsStereo()
{
return m_ui.Stereo;
}
std::shared_ptr<TextureCache> GetTextureCache()
{
return m_TextureCache;
}
std::shared_ptr<Scene> GetScene()
{
return m_Scene;
}
bool SetupView()
{
float2 renderTargetSize = float2(m_RenderTargets->GetSize());
if (m_TemporalAntiAliasingPass)
m_TemporalAntiAliasingPass->SetJitter(m_ui.TemporalAntiAliasingJitter);
float2 pixelOffset = m_ui.AntiAliasingMode == AntiAliasingMode::TEMPORAL && m_TemporalAntiAliasingPass
? m_TemporalAntiAliasingPass->GetCurrentPixelOffset()
: float2(0.f);
std::shared_ptr<StereoPlanarView> stereoView = std::dynamic_pointer_cast<StereoPlanarView, IView>(m_View);
std::shared_ptr<PlanarView> planarView = std::dynamic_pointer_cast<PlanarView, IView>(m_View);
dm::affine3 viewMatrix;
float verticalFov = dm::radians(m_CameraVerticalFov);
float zNear = 0.01f;
if (m_ui.ActiveSceneCamera)
{
auto perspectiveCamera = std::dynamic_pointer_cast<PerspectiveCamera>(m_ui.ActiveSceneCamera);
if (perspectiveCamera)
{
zNear = perspectiveCamera->zNear;
verticalFov = perspectiveCamera->verticalFov;
}
viewMatrix = m_ui.ActiveSceneCamera->GetWorldToViewMatrix();
}
else
{
viewMatrix = GetActiveCamera().GetWorldToViewMatrix();
}
bool topologyChanged = false;
if (IsStereo())
{
if (!stereoView)
{
m_View = stereoView = std::make_shared<StereoPlanarView>();
m_ViewPrevious = std::make_shared<StereoPlanarView>();
topologyChanged = true;
}
stereoView->LeftView.SetViewport(nvrhi::Viewport(renderTargetSize.x * 0.5f, renderTargetSize.y));
stereoView->LeftView.SetPixelOffset(pixelOffset);
stereoView->RightView.SetViewport(nvrhi::Viewport(renderTargetSize.x * 0.5f, renderTargetSize.x, 0.f, renderTargetSize.y, 0.f, 1.f));
stereoView->RightView.SetPixelOffset(pixelOffset);
{
float4x4 projection = perspProjD3DStyleReverse(verticalFov, renderTargetSize.x / renderTargetSize.y * 0.5f, zNear);
affine3 leftView = viewMatrix;
stereoView->LeftView.SetMatrices(leftView, projection);
affine3 rightView = leftView;
rightView.m_translation -= float3(0.2f, 0, 0);
stereoView->RightView.SetMatrices(rightView, projection);
}
stereoView->LeftView.UpdateCache();
stereoView->RightView.UpdateCache();
m_ThirdPersonCamera.SetView(stereoView->LeftView);
if (topologyChanged)
{
*std::static_pointer_cast<StereoPlanarView>(m_ViewPrevious) = *std::static_pointer_cast<StereoPlanarView>(m_View);
}
}
else
{
if (!planarView)
{
m_View = planarView = std::make_shared<PlanarView>();
m_ViewPrevious = std::make_shared<PlanarView>();
topologyChanged = true;
}
float4x4 projection = perspProjD3DStyleReverse(verticalFov, renderTargetSize.x / renderTargetSize.y, zNear);
planarView->SetViewport(nvrhi::Viewport(renderTargetSize.x, renderTargetSize.y));
planarView->SetPixelOffset(pixelOffset);
planarView->SetMatrices(viewMatrix, projection);
planarView->UpdateCache();
m_ThirdPersonCamera.SetView(*planarView);
if (topologyChanged)
{
*std::static_pointer_cast<PlanarView>(m_ViewPrevious) = *std::static_pointer_cast<PlanarView>(m_View);
}
}
return topologyChanged;
}
void CreateRenderPasses(bool& exposureResetRequired)
{
uint32_t motionVectorStencilMask = 0x01;
ForwardShadingPass::CreateParameters ForwardParams;
ForwardParams.trackLiveness = false;
m_ForwardPass = std::make_unique<ForwardShadingPass>(GetDevice(), m_CommonPasses);
m_ForwardPass->Init(*m_ShaderFactory, ForwardParams);
GBufferFillPass::CreateParameters GBufferParams;
GBufferParams.enableMotionVectors = true;
GBufferParams.stencilWriteMask = motionVectorStencilMask;
m_GBufferPass = std::make_unique<GBufferFillPass>(GetDevice(), m_CommonPasses);
m_GBufferPass->Init(*m_ShaderFactory, GBufferParams);
GBufferParams.enableMotionVectors = false;
m_MaterialIDPass = std::make_unique<MaterialIDPass>(GetDevice(), m_CommonPasses);
m_MaterialIDPass->Init(*m_ShaderFactory, GBufferParams);
m_PixelReadbackPass = std::make_unique<PixelReadbackPass>(GetDevice(), m_ShaderFactory, m_RenderTargets->MaterialIDs, nvrhi::Format::RGBA32_UINT);
m_MipMapGenPass = std::make_unique <MipMapGenPass>(GetDevice(), m_ShaderFactory, m_RenderTargets->ResolvedColor, MipMapGenPass::Mode::MODE_COLOR);
m_DeferredLightingPass = std::make_unique<DeferredLightingPass>(GetDevice(), m_CommonPasses);
m_DeferredLightingPass->Init(m_ShaderFactory);
m_SkyPass = std::make_unique<SkyPass>(GetDevice(), m_ShaderFactory, m_CommonPasses, m_RenderTargets->ForwardFramebuffer, *m_View);
{
TemporalAntiAliasingPass::CreateParameters taaParams;
taaParams.sourceDepth = m_RenderTargets->Depth;
taaParams.motionVectors = m_RenderTargets->MotionVectors;
taaParams.unresolvedColor = m_RenderTargets->HdrColor;
taaParams.resolvedColor = m_RenderTargets->ResolvedColor;
taaParams.feedback1 = m_RenderTargets->TemporalFeedback1;
taaParams.feedback2 = m_RenderTargets->TemporalFeedback2;
taaParams.motionVectorStencilMask = motionVectorStencilMask;
taaParams.useCatmullRomFilter = true;
m_TemporalAntiAliasingPass = std::make_unique<TemporalAntiAliasingPass>(GetDevice(), m_ShaderFactory, m_CommonPasses, *m_View, taaParams);
}
if (m_RenderTargets->GetSampleCount() == 1)
{
m_SsaoPass = std::make_unique<SsaoPass>(GetDevice(), m_ShaderFactory, m_CommonPasses, m_RenderTargets->Depth, m_RenderTargets->GBufferNormals, m_RenderTargets->AmbientOcclusion);
}
m_LightProbePass = std::make_shared<LightProbeProcessingPass>(GetDevice(), m_ShaderFactory, m_CommonPasses);
nvrhi::BufferHandle exposureBuffer = nullptr;
if (m_ToneMappingPass)
exposureBuffer = m_ToneMappingPass->GetExposureBuffer();
else
exposureResetRequired = true;
ToneMappingPass::CreateParameters toneMappingParams;
toneMappingParams.exposureBufferOverride = exposureBuffer;
m_ToneMappingPass = std::make_unique<ToneMappingPass>(GetDevice(), m_ShaderFactory, m_CommonPasses, m_RenderTargets->LdrFramebuffer, *m_View, toneMappingParams);
m_BloomPass = std::make_unique<BloomPass>(GetDevice(), m_ShaderFactory, m_CommonPasses, m_RenderTargets->ResolvedFramebuffer, *m_View);
m_PreviousViewsValid = false;
}
virtual void RenderSplashScreen(nvrhi::IFramebuffer* framebuffer) override
{
nvrhi::ITexture* framebufferTexture = framebuffer->getDesc().colorAttachments[0].texture;
m_CommandList->open();
m_CommandList->clearTextureFloat(framebufferTexture, nvrhi::AllSubresources, nvrhi::Color(0.f));
m_CommandList->close();
GetDevice()->executeCommandList(m_CommandList);
GetDeviceManager()->SetVsyncEnabled(true);
}
virtual void RenderScene(nvrhi::IFramebuffer* framebuffer) override
{
int windowWidth, windowHeight;
GetDeviceManager()->GetWindowDimensions(windowWidth, windowHeight);
nvrhi::Viewport windowViewport = nvrhi::Viewport(float(windowWidth), float(windowHeight));
nvrhi::Viewport renderViewport = windowViewport;
m_Scene->RefreshSceneGraph(GetFrameIndex());
bool exposureResetRequired = false;
{
uint width = windowWidth;
uint height = windowHeight;
uint sampleCount = 1;
switch (m_ui.AntiAliasingMode)
{
case AntiAliasingMode::MSAA_2X: sampleCount = 2; break;
case AntiAliasingMode::MSAA_4X: sampleCount = 4; break;
case AntiAliasingMode::MSAA_8X: sampleCount = 8; break;
default:;
}
bool needNewPasses = false;
if (!m_RenderTargets || m_RenderTargets->IsUpdateRequired(uint2(width, height), sampleCount))
{
m_RenderTargets = nullptr;
m_BindingCache.Clear();
m_RenderTargets = std::make_unique<RenderTargets>();
m_RenderTargets->Init(GetDevice(), uint2(width, height), sampleCount, true, true);
needNewPasses = true;
}
if (SetupView())
{
needNewPasses = true;
}
if (m_ui.ShaderReoladRequested)
{
m_ShaderFactory->ClearCache();
needNewPasses = true;
}
if(needNewPasses)
{
CreateRenderPasses(exposureResetRequired);
}
m_ui.ShaderReoladRequested = false;
}
m_CommandList->open();
m_Scene->RefreshBuffers(m_CommandList, GetFrameIndex());
nvrhi::ITexture* framebufferTexture = framebuffer->getDesc().colorAttachments[0].texture;
m_CommandList->clearTextureFloat(framebufferTexture, nvrhi::AllSubresources, nvrhi::Color(0.f));
m_AmbientTop = m_ui.AmbientIntensity * m_ui.SkyParams.skyColor * m_ui.SkyParams.brightness;
m_AmbientBottom = m_ui.AmbientIntensity * m_ui.SkyParams.groundColor * m_ui.SkyParams.brightness;
if (m_ui.EnableShadows)
{
m_SunLight->shadowMap = m_ShadowMap;
box3 sceneBounds = m_Scene->GetSceneGraph()->GetRootNode()->GetGlobalBoundingBox();
frustum projectionFrustum = m_View->GetProjectionFrustum();
const float maxShadowDistance = 100.f;
dm::affine3 viewMatrixInv = m_View->GetChildView(ViewType::PLANAR, 0)->GetInverseViewMatrix();
float zRange = length(sceneBounds.diagonal()) * 0.5f;
m_ShadowMap->SetupForPlanarViewStable(*m_SunLight, projectionFrustum, viewMatrixInv, maxShadowDistance, zRange, zRange, m_ui.CsmExponent);
m_ShadowMap->Clear(m_CommandList);
DepthPass::Context context;
RenderCompositeView(m_CommandList,
&m_ShadowMap->GetView(), nullptr,
*m_ShadowFramebuffer,
m_Scene->GetSceneGraph()->GetRootNode(),
*m_OpaqueDrawStrategy,
*m_ShadowDepthPass,
context,
"ShadowMap",
m_ui.EnableMaterialEvents);
}
else
{
m_SunLight->shadowMap = nullptr;
}
std::vector<std::shared_ptr<LightProbe>> lightProbes;
if (m_ui.EnableLightProbe)
{
for (auto probe : m_LightProbes)
{
if (probe->enabled)
{
probe->diffuseScale = m_ui.LightProbeDiffuseScale;
probe->specularScale = m_ui.LightProbeSpecularScale;
lightProbes.push_back(probe);
}
}
}
m_RenderTargets->Clear(m_CommandList);
if (exposureResetRequired)
m_ToneMappingPass->ResetExposure(m_CommandList, 0.5f);
ForwardShadingPass::Context forwardContext;
if (!m_ui.UseDeferredShading || m_ui.EnableTranslucency)
{
m_ForwardPass->PrepareLights(forwardContext, m_CommandList, m_Scene->GetSceneGraph()->GetLights(), m_AmbientTop, m_AmbientBottom, lightProbes);
}
if (m_ui.UseDeferredShading)
{
GBufferFillPass::Context gbufferContext;
RenderCompositeView(m_CommandList,
m_View.get(), m_ViewPrevious.get(),
*m_RenderTargets->GBufferFramebuffer,
m_Scene->GetSceneGraph()->GetRootNode(),
*m_OpaqueDrawStrategy,
*m_GBufferPass,
gbufferContext,
"GBufferFill",
m_ui.EnableMaterialEvents);
nvrhi::ITexture* ambientOcclusionTarget = nullptr;
if (m_ui.EnableSsao && m_SsaoPass)
{
m_SsaoPass->Render(m_CommandList, m_ui.SsaoParams, *m_View);
ambientOcclusionTarget = m_RenderTargets->AmbientOcclusion;
}
DeferredLightingPass::Inputs deferredInputs;
deferredInputs.SetGBuffer(*m_RenderTargets);
deferredInputs.ambientOcclusion = m_ui.EnableSsao ? m_RenderTargets->AmbientOcclusion : nullptr;
deferredInputs.ambientColorTop = m_AmbientTop;
deferredInputs.ambientColorBottom = m_AmbientBottom;
deferredInputs.lights = &m_Scene->GetSceneGraph()->GetLights();
deferredInputs.lightProbes = m_ui.EnableLightProbe ? &m_LightProbes : nullptr;
deferredInputs.output = m_RenderTargets->HdrColor;
m_DeferredLightingPass->Render(m_CommandList, *m_View, deferredInputs);
}
else
{
RenderCompositeView(m_CommandList,
m_View.get(), m_ViewPrevious.get(),
*m_RenderTargets->ForwardFramebuffer,
m_Scene->GetSceneGraph()->GetRootNode(),