#include <ember_gl.h>

Inheritance diagram for OpenglRenderer:

Public Member Functions
	OpenglRenderer ()=default

OpenglShader *	GetDefaultShader () override

OpenglShader *	GetTextShader () override

void	Initialize () override

void	Flush () override

void	FlushText () override

void	Resize (int view_width, int view_height) override

void	SetContext (const void *ctx) override

void *	GetContext () override

void	Destroy () override

Texture	LoadTexture (const std::string &file_path) override
	Load a texture on `GPU` given a file path. More...

Font	LoadFont (const std::string &file_path, int font_size) override
	Load a `TTF` font on `GPU` given a file path. More...

void	UnloadFont (const Font &font) override
	Unload the Font from CPU/GPU (cleanup) More...

void	UnloadTexture (const Texture &texture) override
	Unload the Texture from GPU (cleanup) More...

void	ClearBackground (const Color &color) override
	Window background color. More...

void	BeginDrawing (const glm::mat4 &view_projection=0) override
	Starting of the drawing procedure. More...

void	EndDrawing () override
	End of the drawing procedure (swap buffers) More...

void	DrawText (const Font &font, const std::string &text, const Transform2D &transform, Color color, float font_size, const ShaderEffect &shader_effect={}, float kerning=0.0f) override
	Draw glyphs given a Loaded Font and text. More...

void	DrawTexture (const Texture &texture, const Transform2D &transform, glm::vec2 size, const Color &color={255, 255, 255, 255}) override
	Draw Texture quad at given Rectangle source. More...

void	DrawTextureEx (const Texture &texture, const ember::Rectangle &source, const ember::Rectangle &dest, glm::vec2 origin, float rotation, float zIndex=0.0f, const Color &color={255, 255, 255, 255}) override
	Draw Texture quad extended. More...

void	DrawLine (glm::vec3 start, glm::vec3 end, const Color &color, float thickness) override
	Draw Lines between two points. More...

void	DrawRect (const Transform2D &transform, glm::vec2 size, const Color &color, float thickness) override
	Draw rectangle. More...

void	DrawRectFilled (const Transform2D &transform, glm::vec2 size, const Color &color, float thickness) override
	Draw rectangle filled. More...

void	DrawTriangle (glm::vec3 p0, glm::vec3 p1, glm::vec3 p2, const Color &color) override

void	DrawTriangleFilled (glm::vec3 p0, glm::vec3 p1, glm::vec3 p2, const Color &color) override

void	DrawCircle (glm::vec3 position, float radius, const Color &color, int segments=32) override

void	DrawCircleFilled (glm::vec3 position, float radius, const Color &color, int segments=32) override

void	BeginMode2D (const Camera2D &camera) override
	Begin 2D mode. More...

void	EndMode2D () override
	End 2D mode. More...

void	BeginCanvas () override
	Begin Canvas Procedure. More...

void	EndCanvas () override
	End Canvas Procedure. More...

Public Member Functions inherited from Renderer
virtual	~Renderer ()=default

	Renderer ()=default

Public Attributes
OpenglShader *	default_shader = nullptr

OpenglShader *	text_shader = nullptr

Public Attributes inherited from Renderer
SDL_Window *	window = nullptr

int	viewport [2] = {480, 270}

RendererType	type = OPENGL

Constructor & Destructor Documentation

◆ OpenglRenderer()

OpenglRenderer::OpenglRenderer ( )

default

Member Function Documentation

◆ BeginCanvas()

void OpenglRenderer::BeginCanvas ( )

overridevirtual

Begin Canvas Procedure.

Used for Draw Static UI

Version: 0.0.7

Returns: void

Implements Renderer.

◆ BeginDrawing()

void OpenglRenderer::BeginDrawing ( const glm::mat4 & view_projection = 0 )

overridevirtual

Starting of the drawing procedure.

Clear the background and start drawing
Draw between

  * * * *

  *

BeginDrawing and EndDrawing
- Orthographic projection
- Ordered rendering

  * Usage:



  * * BeginDrawing();

* * // Draw anything without needing a camera

EndDrawing();

  * @version
  0.0.1


  * @return void

Implements Renderer.

◆ BeginMode2D()

void OpenglRenderer::BeginMode2D ( const Camera2D & camera )

overridevirtual

Begin 2D mode.

Set up the Camera2D component

Usage: BeginMode2D(camera);

Drawing



* * *
with

* the camera view_matrix

EndMode2D();

Version: 0.0.2

Parameters

camera the camera 2D

(view_matrix)

Returns

* void

Implements Renderer.

◆ ClearBackground()

void OpenglRenderer::ClearBackground ( const Color & color )

overridevirtual

Window background color.

Version: 0.0.1

Parameters

color Color in RGBA

Returns: void

Implements Renderer.

◆ Destroy()

void OpenglRenderer::Destroy ( )

overridevirtual

Implements Renderer.

◆ DrawCircle()

void OpenglRenderer::DrawCircle	(	glm::vec3	position,
		float	radius,
		const Color &	color,
		int	segments = `32`
	)

overridevirtual

Implements Renderer.

◆ DrawCircleFilled()

void OpenglRenderer::DrawCircleFilled	(	glm::vec3	position,
		float	radius,
		const Color &	color,
		int	segments = `32`
	)

overridevirtual

Implements Renderer.

◆ DrawLine()

void OpenglRenderer::DrawLine	(	glm::vec3	start,
		glm::vec3	end,
		const Color &	color,
		float	thickness
	)

overridevirtual

Draw Lines between two points.

Version: 0.0.1

Parameters

start	vec2 start point
end	* vec2 * end

point
Parameters

Vec2 start

Vec2 end

color Color in RGBA

thickness float Line thickness
```
@return
void
```

Implements Renderer.

◆ DrawRect()

void OpenglRenderer::DrawRect	(	const Transform2D &	transform,
		glm::vec2	size,
		const Color &	color,
		float	thickness
	)

overridevirtual

Draw rectangle.

Parameters

transform
size	rectangle size
color	Color in RGBA
thickness

* * *

* float

* Line thickness
Returns
void

Version
0.0.6

Implements Renderer.

◆ DrawRectFilled()

void OpenglRenderer::DrawRectFilled	(	const Transform2D &	transform,
		glm::vec2	size,
		const Color &	color,
		float	thickness
	)

overridevirtual

Draw rectangle filled.

Parameters

transform
size	rectangle size
color	Color in RGBA
thickness

Returns

* *


* * void

*
Version
0.0.6

Implements Renderer.

◆ DrawText()

void OpenglRenderer::DrawText	(	const Font &	font,
		const std::string &	text,
		const Transform2D &	transform,
		Color	color,
		float	font_size,
		const ShaderEffect &	shader_effect = `{}`,
		float	kerning = `0.0f`
	)

overridevirtual

Draw glyphs given a Loaded Font and text.

Draw the text

See also: Font; Glyph

  @version



  * * *

* 0.0.1
Parameters

font The loaded Font TTF

text The text to draw, can be dynamic

transform

transform

Implements Renderer.

◆ DrawTexture()

void OpenglRenderer::DrawTexture	(	const Texture &	texture,
		const Transform2D &	transform,
		glm::vec2	size,
		const Color &	color = `{255, 255, 255, 255}`
	)

overridevirtual

Draw Texture quad at given Rectangle source.

Draw the texture

Version: 0.0.1

Parameters

Implements Renderer.

◆ DrawTextureEx()

void OpenglRenderer::DrawTextureEx	(	const Texture &	texture,
		const ember::Rectangle &	source,
		const ember::Rectangle &	dest,
		glm::vec2	origin,
		float	rotation,
		float	zIndex = `0.0f`,
		const Color &	color = `{255, 255, 255, 255}`
	)

overridevirtual

Draw Texture quad extended.

Draw the texture with extended parameters, ex: spritesheet's

*




* * * * @version

* 0.0.1
Parameters

texture The loaded Texture

rect The source Rectangle

Implements Renderer.

◆ DrawTriangle()

void OpenglRenderer::DrawTriangle	(	glm::vec3	p0,
		glm::vec3	p1,
		glm::vec3	p2,
		const Color &	color
	)

overridevirtual

Implements Renderer.

◆ DrawTriangleFilled()

void OpenglRenderer::DrawTriangleFilled	(	glm::vec3	p0,
		glm::vec3	p1,
		glm::vec3	p2,
		const Color &	color
	)

overridevirtual

Implements Renderer.

◆ EndCanvas()

void OpenglRenderer::EndCanvas ( )

overridevirtual

End Canvas Procedure.

Restore GL state

See also: BeginCanvas

Version: 0.0.7

Returns

* *
void

Implements Renderer.

◆ EndDrawing()

void OpenglRenderer::EndDrawing ( )

overridevirtual

End of the drawing procedure (swap buffers)

Version: 0.0.1

Returns: void

Implements Renderer.

◆ EndMode2D()

void OpenglRenderer::EndMode2D ( )

overridevirtual

End 2D mode.

Restore the default view_matrix

Version: 0.0.2

Returns: void

Implements Renderer.

◆ Flush()

void OpenglRenderer::Flush ( )

overridevirtual

Implements Renderer.

◆ FlushText()

void OpenglRenderer::FlushText ( )

overridevirtual

Implements Renderer.

◆ GetContext()

void * OpenglRenderer::GetContext ( )

overridevirtual

Implements Renderer.

◆ GetDefaultShader()

OpenglShader * OpenglRenderer::GetDefaultShader ( )

overridevirtual

Implements Renderer.

◆ GetTextShader()

OpenglShader * OpenglRenderer::GetTextShader ( )

overridevirtual

Implements Renderer.

◆ Initialize()

void OpenglRenderer::Initialize ( )

overridevirtual

Implements Renderer.

◆ LoadFont()

Font OpenglRenderer::LoadFont	(	const std::string &	file_path,
		int	font_size
	)

overridevirtual

Load a TTF font on GPU given a file path.

Bake the font on GPU

Version: 0.0.1

* * * @param

* file_path the path to the file in assets folder
Returns
Font

Implements Renderer.

◆ LoadTexture()

Texture OpenglRenderer::LoadTexture ( const std::string & file_path )

overridevirtual

Load a texture on GPU given a file path.

Create a texture on GPU
See also
Texture
```
* * @version


* *
```
0.0.1
Parameters

file_path the path to the file in assets folder

Returns
```
* * Texture
```

Implements Renderer.

◆ Resize()

void OpenglRenderer::Resize	(	int	view_width,
		int	view_height
	)

overridevirtual

Implements Renderer.

◆ SetContext()

void OpenglRenderer::SetContext ( const void * ctx )

overridevirtual

Implements Renderer.

◆ UnloadFont()

void OpenglRenderer::UnloadFont ( const Font & font )

overridevirtual

Unload the Font from CPU/GPU (cleanup)

Version: 0.0.9

Parameters

font	The loaded Font @return * * * * void

Implements Renderer.

◆ UnloadTexture()

void OpenglRenderer::UnloadTexture ( const Texture & texture )

overridevirtual

Unload the Texture from GPU (cleanup)

Version: 0.0.1

Parameters

texture The loaded Texture

* * * @return

* * void

Implements Renderer.

Member Data Documentation

◆ default_shader

OpenglShader* OpenglRenderer::default_shader = nullptr

◆ text_shader

OpenglShader* OpenglRenderer::text_shader = nullptr

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

engine/public/core/renderer/opengl/ember_gl.h
engine/private/core/renderer/opengl/ember_gl.cpp

Vec2	start
Vec2	end
color	Color in RGBA
thickness	float Line thickness

font	The loaded Font `TTF`
text	The text to draw, can be dynamic
transform
transform

Public Member Functions

Public Attributes

Constructor & Destructor Documentation

◆ OpenglRenderer()

Member Function Documentation

◆ BeginCanvas()

◆ BeginDrawing()

◆ BeginMode2D()

◆ ClearBackground()

◆ Destroy()

◆ DrawCircle()

◆ DrawCircleFilled()

◆ DrawLine()

◆ DrawRect()

◆ DrawRectFilled()

◆ DrawText()

◆ DrawTexture()

◆ DrawTextureEx()

◆ DrawTriangle()

◆ DrawTriangleFilled()

◆ EndCanvas()

◆ EndDrawing()

◆ EndMode2D()

◆ Flush()

◆ FlushText()

◆ GetContext()

◆ GetDefaultShader()

◆ GetTextShader()

◆ Initialize()

◆ LoadFont()

◆ LoadTexture()

◆ Resize()

◆ SetContext()

◆ UnloadFont()

◆ UnloadTexture()

Member Data Documentation

◆ default_shader

◆ text_shader