tgui::BackendRendererOpenGL3 Class Reference

Backend renderer that uses OpenGL 3 or 4 (depending on the loaded OpenGL context that you have to provide) More...

#include <TGUI/Backend/Renderer/OpenGL3/BackendRendererOpenGL3.hpp>

Inheritance diagram for tgui::BackendRendererOpenGL3:

Public Types
using	ContextLoadFuncReturnType = void(*)(void)
using	ContextLoadFuncType = ContextLoadFuncReturnType(*)(const char *name)
using	SDLContextLoadFuncType = void *(*)(const char *name)

Public Member Functions
	BackendRendererOpenGL3 (ContextLoadFuncType contextLoadFunction)
	Initializes the backend renderer. This will initialize GLAD to use (modern) OpenGL. More...
	BackendRendererOpenGL3 (SDLContextLoadFuncType contextLoadFunction)
	Helper constructor so that you can pass SDL_GL_GetProcAddress without needing to cast the type. More...
std::shared_ptr< BackendTexture >	createTexture () override
	Creates a new empty texture object. More...
unsigned int	getMaximumTextureSize () override
	Get the maximum allowed texture size. More...
Public Member Functions inherited from tgui::BackendRenderer
virtual	~BackendRenderer ()=default
	Virtual destructor.
virtual std::shared_ptr< BackendText >	createText ()
	Creates a new empty text object. More...
virtual std::shared_ptr< BackendTexture >	createTexture ()=0
	Creates a new empty texture object. More...
virtual unsigned int	getMaximumTextureSize ()=0
	Get the maximum allowed texture size. More...

Detailed Description

Backend renderer that uses OpenGL 3 or 4 (depending on the loaded OpenGL context that you have to provide)

Constructor & Destructor Documentation

BackendRendererOpenGL3() [1/2]

tgui::BackendRendererOpenGL3::BackendRendererOpenGL3

(

ContextLoadFuncType

contextLoadFunction

)

Initializes the backend renderer. This will initialize GLAD to use (modern) OpenGL.

Parameters

contextLoadFunction

Function that gets the address of an OpenGL function

Examples of load functions are sf::Context::getFunction, SDL_GL_GetProcAddress and glfwGetProcAddress.

Example usage:

backend->setRenderer(std::make_shared<BackendRendererOpenGL3>(glfwGetProcAddress));

BackendRendererOpenGL3() [2/2]

tgui::BackendRendererOpenGL3::BackendRendererOpenGL3

(

SDLContextLoadFuncType

contextLoadFunction

)

Helper constructor so that you can pass SDL_GL_GetProcAddress without needing to cast the type.

See also

BackendRendererOpenGL3(ContextLoadFuncType)

Parameters

contextLoadFunction

Function that gets the address of an OpenGL function

Member Function Documentation

createTexture()

std::shared_ptr< BackendTexture > tgui::BackendRendererOpenGL3::createTexture ( )

overridevirtual

Creates a new empty texture object.

Returns

Shared pointer to a new texture object

Implements tgui::BackendRenderer.

getMaximumTextureSize()

unsigned int tgui::BackendRendererOpenGL3::getMaximumTextureSize ( )

overridevirtual

Get the maximum allowed texture size.

Returns

Maximum width and height that you should try to use in a single texture

This maximum size is defined by the graphics driver. Most likely this will return 8192 or 16384.

Implements tgui::BackendRenderer.

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

• include/TGUI/Backend/Renderer/OpenGL3/BackendRendererOpenGL3.hpp