Vesper::OpenGLRendererAPI Class Reference

An implementation of the RendererAPI for OpenGL. More...

#include <OpenGLRendererAPI.h>

Inheritance diagram for Vesper::OpenGLRendererAPI:

Public Member Functions
virtual void	Init () override
	Initializes the OpenGL rendering API.
virtual void	SetViewport (uint32_t x, uint32_t y, uint32_t width, uint32_t height) override
	Sets the viewport dimensions for OpenGL.
virtual void	SetClearColor (const glm::vec4 &color) override
	Sets the clear color for OpenGL.
virtual void	Clear () override
	Clears the OpenGL rendering buffers.
virtual void	DrawIndexed (const Ref< VertexArray > &vertexArray, uint32_t indexCount=0) override
	Draws indexed geometry using the provided vertex array in OpenGL.
Public Member Functions inherited from Vesper::RendererAPI
virtual	~RendererAPI ()=default

Additional Inherited Members
Public Types inherited from Vesper::RendererAPI
enum class	API { None = 0 , OpenGL = 1 }
	API. More...
Static Public Member Functions inherited from Vesper::RendererAPI
static API	GetAPI ()
	Returns the current rendering API.

Detailed Description

An implementation of the RendererAPI for OpenGL.

Note

Should only be called by the RenderCommand class.

Member Function Documentation

Clear()

void Vesper::OpenGLRendererAPI::Clear ( )

overridevirtual

Clears the OpenGL rendering buffers.

Implements Vesper::RendererAPI.

    {
        VZ_PROFILE_FUNCTION();
 
        glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    }

DrawIndexed()

void Vesper::OpenGLRendererAPI::DrawIndexed ( const Ref< VertexArray > & vertexArray, uint32_t indexCount = 0 )

overridevirtual

Draws indexed geometry using the provided vertex array in OpenGL.

Implements Vesper::RendererAPI.

    {
        VZ_PROFILE_FUNCTION();
 
        uint32_t count = indexCount ? indexCount : vertexArray->GetIndexBuffer()->GetCount();
        glDrawElements(GL_TRIANGLES, count, GL_UNSIGNED_INT, nullptr);
        glBindTexture(GL_TEXTURE_2D, 0);
    }

Init()

void Vesper::OpenGLRendererAPI::Init ( )

overridevirtual

Initializes the OpenGL rendering API.

Implements Vesper::RendererAPI.

    {
        glEnable(GL_BLEND);
        glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
        glEnable(GL_DEPTH_TEST);
    }

SetClearColor()

void Vesper::OpenGLRendererAPI::SetClearColor ( const glm::vec4 & color )

overridevirtual

Sets the clear color for OpenGL.

Implements Vesper::RendererAPI.

    {
        VZ_PROFILE_FUNCTION();
 
        glClearColor(color.r, color.g, color.b, color.a);
    }

SetViewport()

void Vesper::OpenGLRendererAPI::SetViewport ( uint32_t x, uint32_t y, uint32_t width, uint32_t height )

overridevirtual

Sets the viewport dimensions for OpenGL.

Implements Vesper::RendererAPI.

    {
        VZ_PROFILE_FUNCTION();
 
        glViewport(x, y, width, height);
    }

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

• Vesper/src/RenderAPI/OpenGL/OpenGLRendererAPI.h
• Vesper/src/RenderAPI/OpenGL/OpenGLRendererAPI.cpp