RendererGL Class Reference

RendererGL is an OpenGL-based renderer that implements IRenderer. It handles OpenGL initialization, shader loading, and drawing of 2D/3D objects, including sprites, meshes, and textures, using OpenGL API. More...

#include <RendererGL.h>

Inheritance diagram for RendererGL:

Public Member Functions
	RendererGL ()
	Constructor for RendererGL. Initializes member variables and sets up OpenGL context.
virtual	~RendererGL ()
	Destructor for RendererGL. Cleans up the OpenGL context and VertexArray objects.
	RendererGL (const RendererGL &)=delete
RendererGL &	operator= (const RendererGL &)=delete
bool	Initialize (Window &rWindow) override
	Initializes the OpenGL renderer with the given window.
void	LoadShaders ()
	Loads the shaders used by the renderer for various components.
void	BeginDraw () override
	Begins the drawing process, clearing the screen and setting up necessary OpenGL states.
void	Draw () override
	Draws all the rendered components (meshes, sprites, etc.).
void	EndDraw () override
	Ends the drawing process by swapping the buffers.
void	DrawRect (const Rectangle &rRect, Color pColor) override
	Draws a filled rectangle on the screen with the specified color.
void	DrawRectLine (const Rectangle &rRect, Color pColor) override
	Draws the outline of a rectangle on the screen with the specified color.
void	DrawAllSprites ()
	Draws all sprites currently in the render queue.
void	DrawSprite (const Actor &rOwner, Texture *rTexture, Rectangle rec, Flip flip=Flip::None) override
	Draws a sprite on the screen using the specified texture and transformation.
void	DrawAllMeshes ()
	Draws all meshes currently in the render queue.
void	DrawMesh (Mesh *pMesh, int pTextureIndex, const Matrix4 &transform, Vector2 tiling=Vector2::ONE) override
	Draws a mesh with the specified texture index and transformation.
void	SetViewMatrix (const Matrix4 &pView) override
	Sets the view matrix used for rendering.
void	Close () override
	Closes the OpenGL context and cleans up resources.
RendererType	GetType () override
	Returns the type of renderer (OpenGL).
Public Member Functions inherited from IRenderer
virtual	~IRenderer ()=default
void	AddRenderComponent (RenderComponent *pRenderComponent)
	Adds a render component to the list of components to be rendered.
void	RemoveRenderComponent (RenderComponent *pRenderComponent)
	Removes a render component from the list of components to be rendered.
void	AddDebugRender (DebugRenderInterface *pDebugRender)
	Adds a debug render component to the renderer.
void	RemoveDebugRender (DebugRenderInterface *pDebugRender)
	Removes a debug render component from the renderer.

Static Public Member Functions
static Mesh *	GetCubeMesh ()
	Gets the cube mesh used for rendering.

Static Public Attributes
static ShaderProgram	mSimpleMeshShaderProgram = ShaderProgram()
static ShaderProgram	mTesselationMeshShaderProgram = ShaderProgram()
static ShaderProgram	mGrassShaderProgram = ShaderProgram()
static ShaderProgram	mSandShaderProgram = ShaderProgram()
static ShaderProgram	mWaveShaderProgram = ShaderProgram()

Additional Inherited Members
Public Types inherited from IRenderer
enum class	Flip { None = SDL_FLIP_NONE , Horizontal = SDL_FLIP_HORIZONTAL , Vertical = SDL_FLIP_VERTICAL }
	Enum to represent the different flipping modes for rendering sprites. This allows flipping a sprite horizontally or vertically, or no flipping at all. More...
enum class	RendererType { SDL , OPENGL }
	Enum representing the type of renderer (either SDL or OpenGL). This helps identify which underlying rendering system is being used. More...
Protected Attributes inherited from IRenderer
std::vector< RenderComponent * >	mViewportRenderComponents
	List of render components associated with the viewport.
std::vector< RenderComponent * >	mWorldRenderComponents
	List of render components associated with the world (3D space)
std::vector< DebugRenderInterface * >	mDebugRenders
	List of debug render components.

Detailed Description

RendererGL is an OpenGL-based renderer that implements IRenderer. It handles OpenGL initialization, shader loading, and drawing of 2D/3D objects, including sprites, meshes, and textures, using OpenGL API.

Constructor & Destructor Documentation

RendererGL() [1/2]

RendererGL::RendererGL

(

)

Constructor for RendererGL. Initializes member variables and sets up OpenGL context.

~RendererGL()

RendererGL::~RendererGL ( )

virtual

Destructor for RendererGL. Cleans up the OpenGL context and VertexArray objects.

RendererGL() [2/2]

RendererGL::RendererGL ( const RendererGL & )

delete

Member Function Documentation

BeginDraw()

void RendererGL::BeginDraw ( )

overridevirtual

Begins the drawing process, clearing the screen and setting up necessary OpenGL states.

Implements IRenderer.

Close()

void RendererGL::Close ( )

overridevirtual

Closes the OpenGL context and cleans up resources.

Implements IRenderer.

Draw()

void RendererGL::Draw ( )

overridevirtual

Draws all the rendered components (meshes, sprites, etc.).

Implements IRenderer.

DrawAllMeshes()

void RendererGL::DrawAllMeshes

(

)

Draws all meshes currently in the render queue.

DrawAllSprites()

void RendererGL::DrawAllSprites

(

)

Draws all sprites currently in the render queue.

DrawMesh()

void RendererGL::DrawMesh ( Mesh * pMesh, int pTextureIndex, const Matrix4 & transform, Vector2 tiling = Vector2::ONE )

overridevirtual

Draws a mesh with the specified texture index and transformation.

Parameters

pMesh	The mesh to be drawn.
pTextureIndex	The texture index of the mesh.
transform	The transformation matrix to apply to the mesh.
tiling	The tiling factor for the texture.

Reimplemented from IRenderer.

DrawRect()

void RendererGL::DrawRect ( const Rectangle & rRect, Color pColor )

overridevirtual

Draws a filled rectangle on the screen with the specified color.

Parameters

rRect	The rectangle to be drawn.
pColor	The color of the rectangle.

Implements IRenderer.

DrawRectLine()

void RendererGL::DrawRectLine ( const Rectangle & rRect, Color pColor )

overridevirtual

Draws the outline of a rectangle on the screen with the specified color.

Parameters

rRect	The rectangle to be drawn.
pColor	The color of the rectangle outline.

Implements IRenderer.

DrawSprite()

void RendererGL::DrawSprite ( const Actor & rOwner, Texture * rTexture, Rectangle rec, Flip flip = Flip::None )

overridevirtual

Draws a sprite on the screen using the specified texture and transformation.

Parameters

rOwner	The actor owning the sprite (used for context, not directly here).
rTexture	Pointer to the texture to render.
rec	The rectangle that defines the position and size of the sprite on screen.
flip	Specifies sprite flipping (horizontal, vertical, etc.).

Implements IRenderer.

EndDraw()

void RendererGL::EndDraw ( )

overridevirtual

Ends the drawing process by swapping the buffers.

Implements IRenderer.

GetCubeMesh()

Mesh * RendererGL::GetCubeMesh ( )

static

Gets the cube mesh used for rendering.

Returns

A pointer to the cube mesh.

GetType()

IRenderer::RendererType RendererGL::GetType ( )

overridevirtual

Returns the type of renderer (OpenGL).

Returns

RendererType::OPENGL.

Implements IRenderer.

Initialize()

bool RendererGL::Initialize ( Window & rWindow )

overridevirtual

Initializes the OpenGL renderer with the given window.

Parameters

rWindow

The window to render the graphics onto.

Returns

Returns true if initialization is successful, false otherwise.

Implements IRenderer.

LoadShaders()

void RendererGL::LoadShaders

(

)

Loads the shaders used by the renderer for various components.

operator=()

RendererGL & RendererGL::operator= ( const RendererGL & )

delete

SetViewMatrix()

void RendererGL::SetViewMatrix ( const Matrix4 & pView )

overridevirtual

Sets the view matrix used for rendering.

Parameters

pView

The new view matrix.

Reimplemented from IRenderer.

Member Data Documentation

mGrassShaderProgram

ShaderProgram RendererGL::mGrassShaderProgram = ShaderProgram()

static

mSandShaderProgram

ShaderProgram RendererGL::mSandShaderProgram = ShaderProgram()

static

mSimpleMeshShaderProgram

ShaderProgram RendererGL::mSimpleMeshShaderProgram = ShaderProgram()

static

mTesselationMeshShaderProgram

ShaderProgram RendererGL::mTesselationMeshShaderProgram = ShaderProgram()

static

mWaveShaderProgram

ShaderProgram RendererGL::mWaveShaderProgram = ShaderProgram()

static

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

• Engine/Renderer/RendererGL.h
• Engine/Renderer/RendererGL.cpp