OpenGL 3.3+ backend: deferred GBuffer pipeline, SSAO, shadow mapping, and baked IBL. More...

#include <OpenGLRenderer.hpp>

Inheritance diagram for Sleak::RenderEngine::OpenGLRenderer:

Public Member Functions
	OpenGLRenderer (Window *window)
	Registers this backend's buffer/shader/texture factories with ResourceManager.
virtual	~OpenGLRenderer ()
void	ApplyMSAAChange () override
void	ApplyVSyncChange () override
virtual void	BeginDebugLinePass () override
void	BeginRender () override
	Acquires the next frame and prepares it for command recording.
virtual void	BindBoneBuffer (RefPtr< BufferBase > buffer) override
virtual void	BindConstantBuffer (RefPtr< BufferBase > buffer, uint32_t slot=0) override
virtual void	BindIndexBuffer (RefPtr< BufferBase > buffer, uint32_t slot=0) override
virtual void	BindTexture (RefPtr< Sleak::Texture > texture, uint32_t slot=0) override
virtual void	BindVertexBuffer (RefPtr< BufferBase > buffer, uint32_t slot=0) override
void	Cleanup () override
virtual void	ClearDepthStencil (bool clearDepth, bool clearStencil, float depth, uint8_t stencil) override
virtual void	ClearRenderTarget (float r, float g, float b, float a) override
virtual BufferBase *	CreateBuffer (BufferType Type, uint32_t size, void *data) override
	Allocates a backend buffer, optionally seeded with initial data.
Texture *	CreateCubemapTexture (const std::array< std::string, 6 > &facePaths)
	Loads a cubemap from six face image paths.
Texture *	CreateCubemapTextureFromPanorama (const std::string &panoramaPath)
	Loads a cubemap by converting a single equirectangular panorama.
virtual bool	CreateImGUI () override
	Initializes ImGui integration for this backend.
virtual Shader *	CreateShader (const std::string &shaderSource) override
	Compiles a shader program from source or a source-file path.
virtual Texture *	CreateTexture (const std::string &TexturePath) override
	Loads a texture from disk.
virtual Texture *	CreateTextureFromData (uint32_t width, uint32_t height, void *data) override
	Creates a texture from an in-memory pixel buffer.
virtual void	Draw (uint32_t vertexCount) override
	Non-indexed draw from the currently bound vertex buffer.
virtual void	DrawIndexed (uint32_t indexCount) override
	Indexed draw from the currently bound vertex/index buffers.
virtual void	DrawIndexedInstance (uint32_t instanceCount, uint32_t indexPerInstance) override
	Indexed instanced draw.
virtual void	DrawInstance (uint32_t instanceCount, uint32_t vertexPerInstance) override
	Non-indexed instanced draw.
virtual void	EndDebugLinePass () override
void	EndRender () override
	Submits recorded commands and presents the frame.
virtual RenderContext *	GetContext () override
	Returns the backend's command-recording interface.
virtual uint32_t	GetFeatureCaps () const override
	Feature capability mask; backends override with the audited truth.
bool	Initialize () override
	Creates the device, swapchain, and backend resources.
virtual void	Resize (uint32_t width, uint32_t height) override
	Recreates swapchain-dependent resources for a new surface size.
virtual void	SetCullEnabled (bool enabled) override
virtual void	SetDepthCompare (DepthCompare compare) override
virtual void	SetDepthWrite (bool enabled) override
virtual void	SetRenderFace (RenderFace face) override
virtual void	SetRenderMode (RenderMode mode) override
virtual void	SetViewport (float x, float y, float width, float height, float minDepth=0.0f, float maxDepth=1.0f) override
	Sets the active viewport rect and depth range in pixel/NDC units.
Public Member Functions inherited from Sleak::RenderEngine::Renderer
virtual	~Renderer ()=0
virtual void	ApplyShadowResolutionChange ()
virtual void	FlushPendingTransfers ()
	Flushes any buffered upload/staging transfers still in flight.
float	GetCPUUsage () const
bool	GetDeferredEnabled () const
float	GetExposure () const
int	GetFrameRate () const
float	GetFrameTime () const
float	GetGamma () const
virtual size_t	GetGPUMemoryBudget () const
virtual size_t	GetGPUMemoryUsed () const
float	GetIBLIntensity () const
bool	GetImGUIEnabled ()
bool	GetIsPerformanceCounter ()
uint32_t	GetMaxMSAASampleCount () const
uint32_t	GetMSAASampleCount () const
float	GetRamUsage () const
RenderMode	GetRenderMode () const
uint32_t	GetShadowMapResolution () const
float	GetSSAOBias () const
float	GetSSAOPower () const
float	GetSSAORadius () const
int	GetTriangles () const
RendererType	GetType () const
const char *	GetTypeStr () const
int	GetVertices () const
bool	GetVSync () const
bool	IsBloomEnabled () const
bool	IsIBLEnabled () const
bool	IsPCSSEnabled () const
bool	IsShadowPassEnabled () const
bool	IsSSAOEnabled () const
bool	IsSSREnabled () const
bool	IsTAAEnabled () const
bool	IsTonemappingEnabled () const
void	SetBloomEnabled (bool enabled)
void	SetDeferredEnabled (bool enabled)
void	SetExposure (float exposure)
void	SetGamma (float gamma)
void	SetIBLEnabled (bool enabled)
void	SetIBLIntensity (float intensity)
void	SetImGUI (bool bEnable)
virtual void	SetMSAASampleCount (uint32_t samples)
	Requests a new MSAA sample count; rejects invalid values and samples above 1 while deferred shading is on.
void	SetPCSSEnabled (bool enabled)
void	SetPerformanceCounter (bool value)
void	SetRenderCullFace (RenderFace face)
void	SetRenderDrawMode (RenderMode mode)
void	SetShadowMapResolution (uint32_t res)
	Requests a new shadow map size, clamped to [256, 8192] and queued if resources already exist.
void	SetShadowPassEnabled (bool enabled)
void	SetSSAOBias (float bias)
void	SetSSAOEnabled (bool enabled)
void	SetSSAOPower (float power)
void	SetSSAORadius (float radius)
void	SetSSREnabled (bool enabled)
void	SetTAAEnabled (bool enabled)
void	SetTonemappingEnabled (bool enabled)
virtual void	SetVSync (bool enabled)
virtual void	WaitIdle ()
	Blocks until the GPU has finished all outstanding work.
Public Member Functions inherited from Sleak::RenderEngine::RenderContext
virtual void	BeginCustomFormatPass (VertexFormatHandle format)
	Binds the pipeline built for a registered vertex layout in the active render pass.
virtual void	BeginShadowPass ()
virtual void	BeginSkinnedPass ()
virtual void	BeginSkyboxPass ()
virtual void	BindTextureRaw (Sleak::Texture *texture, uint32_t slot=0)
virtual void	EndCustomFormatPass ()
	Restores the pipeline that was active before the custom format draws.
virtual void	EndShadowPass ()
virtual void	EndSkinnedPass ()
virtual void	EndSkyboxPass ()
virtual bool	IsShadowPassActive () const

Additional Inherited Members
Protected Member Functions inherited from Sleak::RenderEngine::Renderer
void	UpdateFrameMetrics ()
	Rolls up frame count into rate/time/triangle stats once per MetricUpdateInterval.
Protected Attributes inherited from Sleak::RenderEngine::Renderer
bool	bEnabledPerformanceCounter = false
bool	bImFrameActive = false
bool	bImInitialized = false
int	DisplayTriangles = 0
int	DisplayVertices = 0
int	DrawnTriangles = 0
int	DrawnVertices = 0
RenderFace	Face
int	frameRate = 0
float	frameTime = 0
bool	m_bloomEnabled = true
bool	m_deferredEnabled = true
float	m_exposure = 1.0f
uint32_t	m_frameCount = 0
Timer	m_frameTimer
float	m_gamma = 2.2f
bool	m_iblEnabled = false
float	m_iblIntensity = 0.5f
uint32_t	m_maxMsaaSampleCount = 1
bool	m_msaaChangeRequested = false
uint32_t	m_msaaSampleCount = 1
bool	m_pcssEnabled = true
uint32_t	m_pendingMsaaSampleCount = 1
uint32_t	m_pendingShadowMapResolution = 2048
uint32_t	m_shadowMapResolution = 2048
bool	m_shadowPassEnabled = false
bool	m_shadowResChangeRequested = false
bool	m_shadowResourcesCreated = false
float	m_ssaoBias = 0.025f
bool	m_ssaoEnabled = false
float	m_ssaoPower = 2.0f
float	m_ssaoRadius = 0.8f
bool	m_ssrEnabled = false
bool	m_taaEnabled = false
bool	m_tonemapEnabled = false
bool	m_vsync = false
bool	m_vsyncChangeRequested = false
RenderMode	Mode
RendererType	Type
float	UsedCPU = 0
float	UsedRam = 0
Static Protected Attributes inherited from Sleak::RenderEngine::Renderer
static constexpr float	MetricUpdateInterval = 0.5f

Detailed Description

OpenGL 3.3+ backend: deferred GBuffer pipeline, SSAO, shadow mapping, and baked IBL.

Definition at line 19 of file OpenGLRenderer.hpp.

Constructor & Destructor Documentation

◆ OpenGLRenderer()

Sleak::RenderEngine::OpenGLRenderer::OpenGLRenderer ( Window * window )

Registers this backend's buffer/shader/texture factories with ResourceManager.

Definition at line 28 of file OpenGLRenderer.cpp.

◆ ~OpenGLRenderer()

Sleak::RenderEngine::OpenGLRenderer::~OpenGLRenderer ( )

virtual

Definition at line 51 of file OpenGLRenderer.cpp.

Member Function Documentation

◆ ApplyMSAAChange()

void Sleak::RenderEngine::OpenGLRenderer::ApplyMSAAChange ( )

overridevirtual

Reimplemented from Sleak::RenderEngine::Renderer.

Definition at line 557 of file OpenGLRenderer.cpp.

◆ ApplyVSyncChange()

void Sleak::RenderEngine::OpenGLRenderer::ApplyVSyncChange ( )

overridevirtual

Reimplemented from Sleak::RenderEngine::Renderer.

Definition at line 569 of file OpenGLRenderer.cpp.

◆ BeginDebugLinePass()

void Sleak::RenderEngine::OpenGLRenderer::BeginDebugLinePass ( )

overridevirtual

Reimplemented from Sleak::RenderEngine::RenderContext.

Definition at line 263 of file OpenGLRenderer.cpp.

◆ BeginRender()

void Sleak::RenderEngine::OpenGLRenderer::BeginRender ( )

overridevirtual

Acquires the next frame and prepares it for command recording.

Implements Sleak::RenderEngine::Renderer.

Definition at line 119 of file OpenGLRenderer.cpp.

◆ BindBoneBuffer()

void Sleak::RenderEngine::OpenGLRenderer::BindBoneBuffer ( RefPtr< BufferBase > buffer )

overridevirtual

Reimplemented from Sleak::RenderEngine::RenderContext.

Definition at line 475 of file OpenGLRenderer.cpp.

◆ BindConstantBuffer()

void Sleak::RenderEngine::OpenGLRenderer::BindConstantBuffer	(	RefPtr< BufferBase >	buffer,
		uint32_t	slot = 0 )

overridevirtual

Implements Sleak::RenderEngine::RenderContext.

Definition at line 435 of file OpenGLRenderer.cpp.

◆ BindIndexBuffer()

void Sleak::RenderEngine::OpenGLRenderer::BindIndexBuffer	(	RefPtr< BufferBase >	buffer,
		uint32_t	slot = 0 )

overridevirtual

Implements Sleak::RenderEngine::RenderContext.

Definition at line 427 of file OpenGLRenderer.cpp.

◆ BindTexture()

void Sleak::RenderEngine::OpenGLRenderer::BindTexture	(	RefPtr< Sleak::Texture >	texture,
		uint32_t	slot = 0 )

overridevirtual

Reimplemented from Sleak::RenderEngine::RenderContext.

Definition at line 336 of file OpenGLRenderer.cpp.

◆ BindVertexBuffer()

void Sleak::RenderEngine::OpenGLRenderer::BindVertexBuffer	(	RefPtr< BufferBase >	buffer,
		uint32_t	slot = 0 )

overridevirtual

Implements Sleak::RenderEngine::RenderContext.

Definition at line 341 of file OpenGLRenderer.cpp.

◆ Cleanup()

void Sleak::RenderEngine::OpenGLRenderer::Cleanup ( )

overridevirtual

Implements Sleak::RenderEngine::Renderer.

Definition at line 190 of file OpenGLRenderer.cpp.

◆ ClearDepthStencil()

void Sleak::RenderEngine::OpenGLRenderer::ClearDepthStencil	(	bool	clearDepth,
		bool	clearStencil,
		float	depth,
		uint8_t	stencil )

overridevirtual

Implements Sleak::RenderEngine::RenderContext.

Definition at line 296 of file OpenGLRenderer.cpp.

◆ ClearRenderTarget()

void Sleak::RenderEngine::OpenGLRenderer::ClearRenderTarget	(	float	r,
		float	g,
		float	b,
		float	a )

overridevirtual

Implements Sleak::RenderEngine::RenderContext.

Definition at line 290 of file OpenGLRenderer.cpp.

◆ CreateBuffer()

BufferBase * Sleak::RenderEngine::OpenGLRenderer::CreateBuffer	(	BufferType	Type,
		uint32_t	size,
		void *	data )

overridevirtual

Allocates a backend buffer, optionally seeded with initial data.

Implements Sleak::RenderEngine::RenderContext.

Definition at line 479 of file OpenGLRenderer.cpp.

◆ CreateCubemapTexture()

Texture * Sleak::RenderEngine::OpenGLRenderer::CreateCubemapTexture ( const std::array< std::string, 6 > & facePaths )

Loads a cubemap from six face image paths.

Definition at line 613 of file OpenGLRenderer.cpp.

◆ CreateCubemapTextureFromPanorama()

Texture * Sleak::RenderEngine::OpenGLRenderer::CreateCubemapTextureFromPanorama ( const std::string & panoramaPath )

Loads a cubemap by converting a single equirectangular panorama.

Definition at line 622 of file OpenGLRenderer.cpp.

◆ CreateImGUI()

bool Sleak::RenderEngine::OpenGLRenderer::CreateImGUI ( )

overridevirtual

Initializes ImGui integration for this backend.

Implements Sleak::RenderEngine::Renderer.

Definition at line 631 of file OpenGLRenderer.cpp.

◆ CreateShader()

Shader * Sleak::RenderEngine::OpenGLRenderer::CreateShader ( const std::string & shaderSource )

overridevirtual

Compiles a shader program from source or a source-file path.

Implements Sleak::RenderEngine::RenderContext.

Definition at line 489 of file OpenGLRenderer.cpp.

◆ CreateTexture()

Texture * Sleak::RenderEngine::OpenGLRenderer::CreateTexture ( const std::string & TexturePath )

overridevirtual

Loads a texture from disk.

Implements Sleak::RenderEngine::RenderContext.

Definition at line 498 of file OpenGLRenderer.cpp.

◆ CreateTextureFromData()

Texture * Sleak::RenderEngine::OpenGLRenderer::CreateTextureFromData	(	uint32_t	width,
		uint32_t	height,
		void *	data )

overridevirtual

Creates a texture from an in-memory pixel buffer.

Implements Sleak::RenderEngine::RenderContext.

Definition at line 507 of file OpenGLRenderer.cpp.

◆ Draw()

void Sleak::RenderEngine::OpenGLRenderer::Draw ( uint32_t vertexCount )

overridevirtual

Non-indexed draw from the currently bound vertex buffer.

Implements Sleak::RenderEngine::RenderContext.

Definition at line 231 of file OpenGLRenderer.cpp.

◆ DrawIndexed()

void Sleak::RenderEngine::OpenGLRenderer::DrawIndexed ( uint32_t indexCount )

overridevirtual

Indexed draw from the currently bound vertex/index buffers.

Implements Sleak::RenderEngine::RenderContext.

Definition at line 238 of file OpenGLRenderer.cpp.

◆ DrawIndexedInstance()

void Sleak::RenderEngine::OpenGLRenderer::DrawIndexedInstance	(	uint32_t	instanceCount,
		uint32_t	indexPerInstance )

overridevirtual

Indexed instanced draw.

Implements Sleak::RenderEngine::RenderContext.

Definition at line 254 of file OpenGLRenderer.cpp.

◆ DrawInstance()

void Sleak::RenderEngine::OpenGLRenderer::DrawInstance	(	uint32_t	instanceCount,
		uint32_t	vertexPerInstance )

overridevirtual

Non-indexed instanced draw.

Implements Sleak::RenderEngine::RenderContext.

Definition at line 245 of file OpenGLRenderer.cpp.

◆ EndDebugLinePass()

void Sleak::RenderEngine::OpenGLRenderer::EndDebugLinePass ( )

overridevirtual

Reimplemented from Sleak::RenderEngine::RenderContext.

Definition at line 267 of file OpenGLRenderer.cpp.

◆ EndRender()

void Sleak::RenderEngine::OpenGLRenderer::EndRender ( )

overridevirtual

Submits recorded commands and presents the frame.

Implements Sleak::RenderEngine::Renderer.

Definition at line 165 of file OpenGLRenderer.cpp.

◆ GetContext()

virtual RenderContext * Sleak::RenderEngine::OpenGLRenderer::GetContext ( )

inlineoverridevirtual

Returns the backend's command-recording interface.

Implements Sleak::RenderEngine::Renderer.

Definition at line 40 of file OpenGLRenderer.hpp.

◆ GetFeatureCaps()

virtual uint32_t Sleak::RenderEngine::OpenGLRenderer::GetFeatureCaps ( ) const

inlineoverridevirtual

Feature capability mask; backends override with the audited truth.

Reimplemented from Sleak::RenderEngine::Renderer.

Definition at line 29 of file OpenGLRenderer.hpp.

◆ Initialize()

bool Sleak::RenderEngine::OpenGLRenderer::Initialize ( )

overridevirtual

Creates the device, swapchain, and backend resources.

Implements Sleak::RenderEngine::Renderer.

Definition at line 55 of file OpenGLRenderer.cpp.

◆ Resize()

void Sleak::RenderEngine::OpenGLRenderer::Resize	(	uint32_t	width,
		uint32_t	height )

overridevirtual

Recreates swapchain-dependent resources for a new surface size.

Implements Sleak::RenderEngine::Renderer.

Definition at line 218 of file OpenGLRenderer.cpp.

◆ SetCullEnabled()

void Sleak::RenderEngine::OpenGLRenderer::SetCullEnabled ( bool enabled )

overridevirtual

Reimplemented from Sleak::RenderEngine::RenderContext.

Definition at line 329 of file OpenGLRenderer.cpp.

◆ SetDepthCompare()

void Sleak::RenderEngine::OpenGLRenderer::SetDepthCompare ( DepthCompare compare )

overridevirtual

Reimplemented from Sleak::RenderEngine::RenderContext.

Definition at line 314 of file OpenGLRenderer.cpp.

◆ SetDepthWrite()

void Sleak::RenderEngine::OpenGLRenderer::SetDepthWrite ( bool enabled )

overridevirtual

Reimplemented from Sleak::RenderEngine::RenderContext.

Definition at line 310 of file OpenGLRenderer.cpp.

◆ SetRenderFace()

void Sleak::RenderEngine::OpenGLRenderer::SetRenderFace ( RenderFace face )

overridevirtual

Implements Sleak::RenderEngine::RenderContext.

Definition at line 271 of file OpenGLRenderer.cpp.

◆ SetRenderMode()

void Sleak::RenderEngine::OpenGLRenderer::SetRenderMode ( RenderMode mode )

overridevirtual

Implements Sleak::RenderEngine::RenderContext.

Definition at line 276 of file OpenGLRenderer.cpp.

◆ SetViewport()

void Sleak::RenderEngine::OpenGLRenderer::SetViewport	(	float	x,
		float	y,
		float	width,
		float	height,
		float	minDepth = 0.0f,
		float	maxDepth = 1.0f )

overridevirtual

Sets the active viewport rect and depth range in pixel/NDC units.

Implements Sleak::RenderEngine::RenderContext.

Definition at line 281 of file OpenGLRenderer.cpp.

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ OpenGLRenderer()

◆ ~OpenGLRenderer()

Member Function Documentation

◆ ApplyMSAAChange()

◆ ApplyVSyncChange()

◆ BeginDebugLinePass()

◆ BeginRender()

◆ BindBoneBuffer()

◆ BindConstantBuffer()

◆ BindIndexBuffer()

◆ BindTexture()

◆ BindVertexBuffer()

◆ Cleanup()

◆ ClearDepthStencil()

◆ ClearRenderTarget()

◆ CreateBuffer()

◆ CreateCubemapTexture()

◆ CreateCubemapTextureFromPanorama()

◆ CreateImGUI()

◆ CreateShader()

◆ CreateTexture()

◆ CreateTextureFromData()

◆ Draw()

◆ DrawIndexed()

◆ DrawIndexedInstance()

◆ DrawInstance()

◆ EndDebugLinePass()

◆ EndRender()

◆ GetContext()

◆ GetFeatureCaps()

◆ Initialize()

◆ Resize()

◆ SetCullEnabled()

◆ SetDepthCompare()

◆ SetDepthWrite()

◆ SetRenderFace()

◆ SetRenderMode()

◆ SetViewport()