Terrain::TerrainContext Class Reference

#include <terraincontext.h>

Inherits Graphics::GraphicsContext.

Classes
struct	TerrainLoadInfo
struct	TerrainRuntimeInfo

Public Member Functions
	TerrainContext ()
	constructor
virtual	~TerrainContext ()
	destructor
Public Member Functions inherited from Graphics::GraphicsContext
	GraphicsContext ()
	constructor
virtual	~GraphicsContext ()
	destructor

Static Public Member Functions
static void	Create (const TerrainSetupSettings &settings)
	create terrain context
static void	Discard ()
	destroy terrain context
static void	SetupTerrain (const Graphics::GraphicsEntityId entity, const Resources::ResourceName &heightMap, const Resources::ResourceName &decisionMap, bool enableRayTracing)
	setup new terrain surface from texture and settings
static TerrainBiomeId	CreateBiome (const BiomeSettings &settings)
	setup a new biome
static void	SetBiomeSlopeThreshold (TerrainBiomeId id, float threshold)
	set biome slope threshold
static void	SetBiomeHeightThreshold (TerrainBiomeId id, float threshold)
	set biome height threshold
static void	SetSun (const Graphics::GraphicsEntityId sun)
	Set the sun entity for terrain shadows.
static void	CullPatches (const Ptr< Graphics::View > &view, const Graphics::FrameContext &ctx)
	cull terrain patches
static void	UpdateLOD (const Ptr< Graphics::View > &view, const Graphics::FrameContext &ctx)
	update sparse texture mips
static void	RenderUI (const Graphics::FrameContext &ctx)
	render IMGUI
static void	ClearCache ()
	clear the tile cache (use when we need to force update the terrain)
static void	OnRenderDebug (uint32_t flags)
	debug rendering

Private Types
enum	{ Terrain_LoadInfo , Terrain_RuntimeInfo }
enum	{ TerrainBiome_Settings , TerrainBiome_Index , TerrainBiome_MaskTexture }
typedef Ids::IdAllocator< TerrainLoadInfo, TerrainRuntimeInfo >	TerrainAllocator
typedef Ids::IdAllocator< BiomeSettings, uint32_t >	TerrainBiomeAllocator

Private Member Functions
	__DeclareContext ()

Static Private Member Functions
static Graphics::ContextEntityId	Alloc ()
	allocate a new slice for this context
static void	Dealloc (Graphics::ContextEntityId id)
	deallocate a slice

Static Private Attributes
static TerrainAllocator	terrainAllocator
static TerrainBiomeAllocator	terrainBiomeAllocator

Additional Inherited Members
Static Protected Member Functions inherited from Graphics::GraphicsContext
static void	InternalRegisterEntity (const Graphics::GraphicsEntityId id, Graphics::GraphicsContextState &&state)
static void	InternalDeregisterEntity (const Graphics::GraphicsEntityId id, Graphics::GraphicsContextState &&state)
template<class ID_ALLOCATOR >
static void	InternalDefragment (ID_ALLOCATOR &allocator, Graphics::GraphicsContextState &&state)

Member Typedef Documentation

TerrainAllocator

typedef Ids::IdAllocator< TerrainLoadInfo, TerrainRuntimeInfo > Terrain::TerrainContext::TerrainAllocator

private

TerrainBiomeAllocator

typedef Ids::IdAllocator< BiomeSettings, uint32_t > Terrain::TerrainContext::TerrainBiomeAllocator

private

Member Enumeration Documentation

anonymous enum

anonymous enum

private

Enumerator
Terrain_LoadInfo
Terrain_RuntimeInfo

anonymous enum

anonymous enum

private

Enumerator
TerrainBiome_Settings
TerrainBiome_Index
TerrainBiome_MaskTexture

Constructor & Destructor Documentation

TerrainContext()

Terrain::TerrainContext::TerrainContext

(

)

constructor

~TerrainContext()

Terrain::TerrainContext::~TerrainContext ( )

virtual

destructor

Member Function Documentation

__DeclareContext()

Terrain::TerrainContext::__DeclareContext ( )

private

Alloc()

Graphics::ContextEntityId Terrain::TerrainContext::Alloc ( )

staticprivate

allocate a new slice for this context

ClearCache()

void Terrain::TerrainContext::ClearCache ( )

static

clear the tile cache (use when we need to force update the terrain)

Create()

void Terrain::TerrainContext::Create ( const TerrainSetupSettings & settings )

static

create terrain context

Adaptive terrain virtual texturing setup

Passes:

1. Clear page update buffer.
2. Rasterize geometry and update page buffer.
3. Read back on CPU and generate terrain tile jobs
4. Splat terrain tiles into to physical texture cache.
5. Render full-screen pass to put terrain pixels on the screen.

Why don't we just render the terrain directly and sample our input textures? Well, it would require a lot of work for the terrain splatting shader, especially if we want to have features like roads and procedural decals. This is called an optimization. LOL.

CreateBiome()

TerrainBiomeId Terrain::TerrainContext::CreateBiome ( const BiomeSettings & settings )

static

setup a new biome

CullPatches()

void Terrain::TerrainContext::CullPatches ( const Ptr< Graphics::View > & view, const Graphics::FrameContext & ctx )

static

cull terrain patches

Dealloc()

void Terrain::TerrainContext::Dealloc ( Graphics::ContextEntityId id )

staticprivate

deallocate a slice

Discard()

void Terrain::TerrainContext::Discard ( )

static

destroy terrain context

OnRenderDebug()

void Terrain::TerrainContext::OnRenderDebug ( uint32_t flags )

static

debug rendering

RenderUI()

void Terrain::TerrainContext::RenderUI ( const Graphics::FrameContext & ctx )

static

render IMGUI

SetBiomeHeightThreshold()

void Terrain::TerrainContext::SetBiomeHeightThreshold ( TerrainBiomeId id, float threshold )

static

set biome height threshold

SetBiomeSlopeThreshold()

void Terrain::TerrainContext::SetBiomeSlopeThreshold ( TerrainBiomeId id, float threshold )

static

set biome slope threshold

SetSun()

void Terrain::TerrainContext::SetSun ( const Graphics::GraphicsEntityId sun )

static

Set the sun entity for terrain shadows.

SetupTerrain()

void Terrain::TerrainContext::SetupTerrain ( const Graphics::GraphicsEntityId entity, const Resources::ResourceName & heightMap, const Resources::ResourceName & decisionMap, bool enableRayTracing )

static

setup new terrain surface from texture and settings

Setup with raytracing

UpdateLOD()

void Terrain::TerrainContext::UpdateLOD ( const Ptr< Graphics::View > & view, const Graphics::FrameContext & ctx )

static

update sparse texture mips

Member Data Documentation

terrainAllocator

TerrainContext::TerrainAllocator Terrain::TerrainContext::terrainAllocator

staticprivate

terrainBiomeAllocator

TerrainContext::TerrainBiomeAllocator Terrain::TerrainContext::terrainBiomeAllocator

staticprivate

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The documentation for this class was generated from the following files:

• /github/workspace/code/render/terrain/terraincontext.h
• /github/workspace/code/render/terrain/terraincontext.cc