Renderer class (OpenGL 3.3) More...

#include <Renderer.hpp>

Public Member Functions
	~Renderer ()
	Destructor.

GLFWwindow *	getWindow () const
	Get the GLFW window object, associated with the Renderer.

void	generateTexture (const std::string &name, const Image &image)
	Generate a texture on the GPU from the given image. More...

void	generateTexture (const std::string &name, const std::string &text, const glm::vec3 &colour, const int fontSize=48, const std::string &fontPath="resources/fonts/CrusoeText/CrusoeText-Regular.ttf", const bool replace=true)
	Generate a texture on the GPU that contains the given text. More...

void	deleteTexture (const std::string &name)
	Deletes the texture indicated by the given name. More...

void	createRectangle (Model &rect, const glm::vec3 &topLeft, const glm::vec3 &bottomRight)
	Populates a Model object with a rectangle stretching between the given coordinates. More...

void	render (Model &model, const glm::vec3 &offset, const glm::vec3 &rotation, const glm::vec4 &colour, const std::string &textureName="", const bool perspective=true)
	Render a Model. More...

void	render (Model &model, const glm::vec3 &offset, const glm::vec3 &rotation, const std::string &textureName)
	Render a Model. More...

void	render (Model &model, const std::string &textureName, const bool perspective=true)
	Render a Model. More...

void	render (Model &model, const glm::vec4 &colour, const bool perspective=true)
	Render a Model. More...

void	render (SceneObject &sceneObject, const glm::vec4 &colour)
	Render a SceneObject. More...

void	render (SceneObject &sceneObject, const std::string &textureName)
	Render a SceneObject. More...

void	clearBuffers (Model &model) const
	Clear a Model from the GPU buffers (the Model itself remains intact). More...

void	clearBuffers (SceneObject &sceneObject) const
	Clear a SceneObject (multiple models) from the GPU buffers (the SceneObject itself remains intact). More...

void	clearScreen () const
	Clears the screen.

void	clearScreen (const glm::vec4 &colour) const
	Clears the screen. More...

void	swapBuffers () const
	This is a double buffered system and this command swaps the buffers.

	Renderer (Renderer const &)=delete

void	operator= (Renderer const &)=delete

	Renderer (Renderer &&)=delete

void	operator= (Renderer &&)=delete

Static Public Member Functions
static Renderer &	getInstance (const std::string &windowTitle="", const int width=0, const int height=0, const float frustumScale=1.0f, const float zNear=1.0f, const float zFar=24.0f, const float zOffsetFromCamera=-1.0f, const std::string &shadersPath="resources/shaders/", const uint32_t maxObjectsPerPass=20)
	Get the instance of the Renderer (the Renderer is a singleton). More...

Public Attributes
glm::vec3	lightDirection
	Vector, indicating the direction of the light in the scene.

glm::vec3	cameraPosition
	The camera position in world space.

glm::vec3	cameraRotation
	The camera rotation (around the x, y and z axes)

float	lightIntensity = 1.0f
	The light intensity (set to -1.0f if no lighting is to be used).

Detailed Description

Renderer class (OpenGL 3.3)

Member Function Documentation

◆ clearBuffers() [1/2]

void small3d::Renderer::clearBuffers ( Model & model ) const

Clear a Model from the GPU buffers (the Model itself remains intact).

Parameters

model The model

◆ clearBuffers() [2/2]

void small3d::Renderer::clearBuffers ( SceneObject & sceneObject ) const

Clear a SceneObject (multiple models) from the GPU buffers (the SceneObject itself remains intact).

Parameters

sceneObject The scene object

◆ clearScreen()

void small3d::Renderer::clearScreen ( const glm::vec4 & colour ) const

Clears the screen.

Parameters

colour The colour with which the screen is to be cleared

◆ createRectangle()

void small3d::Renderer::createRectangle	(	Model &	rect,
		const glm::vec3 &	topLeft,
		const glm::vec3 &	bottomRight
	)

Populates a Model object with a rectangle stretching between the given coordinates.

Parameters

rect	Model object in which the rectangle data will be entered
topLeft	Top left corner of the rectangle
bottomRight	Bottom right corner of the rectangle

◆ deleteTexture()

void small3d::Renderer::deleteTexture ( const std::string & name )

Deletes the texture indicated by the given name.

Parameters

name	The name of the texture.

◆ generateTexture() [1/2]

void small3d::Renderer::generateTexture	(	const std::string &	name,
		const Image &	image
	)

Generate a texture on the GPU from the given image.

Parameters

name	The name by which the texture will be known
image	The image from which the texture will be generated

◆ generateTexture() [2/2]

void small3d::Renderer::generateTexture	(	const std::string &	name,
		const std::string &	text,
		const glm::vec3 &	colour,
		const int	fontSize = `48`,
		const std::string &	fontPath = `"resources/fonts/CrusoeText/CrusoeText-Regular.ttf"`,
		const bool	replace = `true`
	)

Generate a texture on the GPU that contains the given text.

Parameters

name	The name by which the texture will be known
text	The text that will be contained in the texture
colour	The colour of the text
fontSize	The size of the font which will be used
fontPath	Path to the TrueType font (.ttf) which will be used
replace	If true, an exception will be thrown if a texture with the same name already exists. Otherwise it will be overwritten.

◆ getInstance()

Renderer & small3d::Renderer::getInstance	(	const std::string &	windowTitle = `""`,
		const int	width = `0`,
		const int	height = `0`,
		const float	frustumScale = `1.0f`,
		const float	zNear = `1.0f`,
		const float	zFar = `24.0f`,
		const float	zOffsetFromCamera = `-1.0f`,
		const std::string &	shadersPath = `"resources/shaders/"`,
		const uint32_t	maxObjectsPerPass = `20`
	)

static

Get the instance of the Renderer (the Renderer is a singleton).

Parameters

windowTitle	The title of the game's window
width	The width of the window. If width and height are not set or set to 0, the game will run in full screen mode.
height	The height of the window
frustumScale	How much the frustum scales the items rendered
zNear	Projection plane z coordinate (use positive value)
zFar	Far end of frustum z coordinate (use positive value)
zOffsetFromCamera	The position of the projection plane with regard to the camera.
shadersPath	The path where the shaders will be stored, relative to the application's executing directory. It defaults to the path provided by the engine, but it can be changed, so as to accommodate for executables which are going to be using it. Even though the path to the folder can be changed, the folder structure within it and the names of the shaders must remain as provided. The shader code can be changed, provided that their inputs and outputs are maintained the same.
maxObjectsPerPass	Ignored parameter (used for compatibility with Vulkan edition).

Returns: The Renderer object. It can only be assigned to a pointer by its address (Renderer *r = &Renderer::getInstance(...), since declaring another Renderer variable and assigning to it would invoke the default constructor, which has been deleted.

◆ render() [1/6]

void small3d::Renderer::render	(	Model &	model,
		const glm::vec3 &	offset,
		const glm::vec3 &	rotation,
		const glm::vec4 &	colour,
		const std::string &	textureName = `""`,
		const bool	perspective = `true`
	)

Render a Model.

Parameters

model	The model
offset	The offset (position) where to draw the model (ignored in orthographic rendering)
rotation	Rotation (x, y, z) (ignored in orthographic rendering)
colour	The colour of the model
textureName	The name of the texture to attach to the model (optional). The texture has to have been generated already. If this is set, the colour parameter will be ignored.
perspective	If true perform perspective rendering, otherwise orthographic.

◆ render() [2/6]

void small3d::Renderer::render	(	Model &	model,
		const glm::vec3 &	offset,
		const glm::vec3 &	rotation,
		const std::string &	textureName
	)

Render a Model.

Parameters

model	The model
offset	The offset (position) where to draw the model
rotation	Rotation (x, y, z)
textureName	The name of the texture to attach to the model. The texture has to have been generated already.

◆ render() [3/6]

void small3d::Renderer::render	(	Model &	model,
		const std::string &	textureName,
		const bool	perspective = `true`
	)

Render a Model.

Parameters

model	The model
textureName	The name of the texture to attach to the model. The texture has to have been generated already.
perspective	True = perspective drawing, otherwise orthographic

◆ render() [4/6]

void small3d::Renderer::render	(	Model &	model,
		const glm::vec4 &	colour,
		const bool	perspective = `true`
	)

Render a Model.

Parameters

model	The model
colour	The colour of the model
perspective	True = perspective drawing, otherwise orthographic

◆ render() [5/6]

void small3d::Renderer::render	(	SceneObject &	sceneObject,
		const glm::vec4 &	colour
	)

Render a SceneObject.

Parameters

sceneObject	The object
colour	The colour the object.

◆ render() [6/6]

void small3d::Renderer::render	(	SceneObject &	sceneObject,
		const std::string &	textureName
	)

Render a SceneObject.

Parameters

sceneObject	The object
textureName	The name of the texture to attach to the object. The texture has to have been generated already.

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

Renderer.hpp
Renderer.cpp

Public Member Functions

Static Public Member Functions

Public Attributes

Detailed Description

Member Function Documentation

◆ clearBuffers() [1/2]

◆ clearBuffers() [2/2]

◆ clearScreen()

◆ createRectangle()

◆ deleteTexture()

◆ generateTexture() [1/2]

◆ generateTexture() [2/2]

◆ getInstance()

◆ render() [1/6]

◆ render() [2/6]

◆ render() [3/6]

◆ render() [4/6]

◆ render() [5/6]

◆ render() [6/6]