Elevate::OpenGLRendererAPI Class Reference

#include <OpenGLRendererAPI.h>

Inheritance diagram for Elevate::OpenGLRendererAPI:

Public Member Functions
GLenum	DrawPrimitiveTypeToOpenGL (DrawPrimitiveType type) const
virtual void	SetClearColor (const glm::vec4 &color) const override
virtual void	SetViewport (int x, int y, int width, int height) const override
virtual void	Clear () const override
virtual void	FlushBuffers () const override
virtual void	ClearTextureBindings () const override
virtual void	DrawArray (const VertexArray *vao, DrawPrimitiveType primitive=DrawPrimitiveType::Triangles) const override
virtual void	SetCullingState (bool enabled) const override
virtual void	SetDepthWrittingState (bool enabled) const override
virtual void	SetDepthTestingState (bool enabled) const override

Additional Inherited Members
Public Types inherited from Elevate::RendererAPI
enum class	GraphicAPI { None = 0 , OpenGL = 1 }
Static Public Member Functions inherited from Elevate::RendererAPI
static GraphicAPI	GetAPI ()

Detailed Description

Definition at line 9 of file OpenGLRendererAPI.h.

Member Function Documentation

Clear()

void Elevate::OpenGLRendererAPI::Clear ( ) const

overridevirtual

Implements Elevate::RendererAPI.

Definition at line 38 of file OpenGLRendererAPI.cpp.

    {
        glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    }

ClearTextureBindings()

void Elevate::OpenGLRendererAPI::ClearTextureBindings ( ) const

overridevirtual

Implements Elevate::RendererAPI.

Definition at line 48 of file OpenGLRendererAPI.cpp.

    {
        glActiveTexture(GL_TEXTURE0);
        glBindTexture(GL_TEXTURE_2D, 0);
    }

DrawArray()

void Elevate::OpenGLRendererAPI::DrawArray ( const VertexArray *  vao, DrawPrimitiveType  primitive = DrawPrimitiveType::Triangles  ) const

overridevirtual

Implements Elevate::RendererAPI.

Definition at line 54 of file OpenGLRendererAPI.cpp.

    {
        if (!glfwGetCurrentContext()) {
            EE_CORE_ERROR("No OpenGL context active!");
            return;
        }
 
        if (!vao)
        {
            EE_CORE_ERROR("VAO or IndexBuffer is null!");
            return;
        }
 
        vao->Bind();
 
        if (vao->GetIndexBuffer())
        {
            if (vao->GetIndexBuffer()->GetCount() == 0) 
            {
                EE_CORE_ERROR("IndexBuffer has 0 indices!");
                return;
            }
 
            GLCheck(glDrawElements(DrawPrimitiveTypeToOpenGL(primitive), vao->GetIndexBuffer()->GetCount(), GL_UNSIGNED_INT, nullptr));
        }
        else
        {
            for (const auto& vbo : vao->GetVertexBuffers())
            {
                uint32_t vertexCount = vbo->GetSize() / vbo->GetLayout().GetStride();
                GLCheck(glDrawArrays(DrawPrimitiveTypeToOpenGL(primitive), 0, vertexCount));
            }
        }
    }

DrawPrimitiveTypeToOpenGL()

GLenum Elevate::OpenGLRendererAPI::DrawPrimitiveTypeToOpenGL ( DrawPrimitiveType  type ) const

inline

Definition at line 12 of file OpenGLRendererAPI.cpp.

    {
        switch (type)
        {
            case DrawPrimitiveType::Points:        return GL_POINTS;
            case DrawPrimitiveType::Lines:         return GL_LINES;
            case DrawPrimitiveType::LineStrip:     return GL_LINE_STRIP;
            case DrawPrimitiveType::Triangles:     return GL_TRIANGLES;
            case DrawPrimitiveType::TriangleStrip: return GL_TRIANGLE_STRIP;
            case DrawPrimitiveType::TriangleFan:   return GL_TRIANGLE_FAN;
            case DrawPrimitiveType::Patches:       return GL_PATCHES;
            default:                               return GL_TRIANGLES;
        }
        return GL_TRIANGLES;
    }

FlushBuffers()

void Elevate::OpenGLRendererAPI::FlushBuffers ( ) const

overridevirtual

Implements Elevate::RendererAPI.

Definition at line 43 of file OpenGLRendererAPI.cpp.

    {
        glFlush();
    }

SetClearColor()

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

overridevirtual

Implements Elevate::RendererAPI.

Definition at line 28 of file OpenGLRendererAPI.cpp.

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

SetCullingState()

void Elevate::OpenGLRendererAPI::SetCullingState ( bool  enabled ) const

overridevirtual

Implements Elevate::RendererAPI.

Definition at line 89 of file OpenGLRendererAPI.cpp.

    {
        if(enabled) glEnable(GL_CULL_FACE);
        else        glDisable(GL_CULL_FACE);
    }

SetDepthTestingState()

void Elevate::OpenGLRendererAPI::SetDepthTestingState ( bool  enabled ) const

overridevirtual

Implements Elevate::RendererAPI.

Definition at line 98 of file OpenGLRendererAPI.cpp.

    {
        if (enabled) glEnable(GL_DEPTH_TEST);
        else        glDisable(GL_DEPTH_TEST);
    }

SetDepthWrittingState()

void Elevate::OpenGLRendererAPI::SetDepthWrittingState ( bool  enabled ) const

overridevirtual

Implements Elevate::RendererAPI.

Definition at line 94 of file OpenGLRendererAPI.cpp.

    {
        glDepthMask(enabled ? GL_TRUE : GL_FALSE);
    }

SetViewport()

void Elevate::OpenGLRendererAPI::SetViewport ( int  x, int  y, int  width, int  height  ) const

overridevirtual

Implements Elevate::RendererAPI.

Definition at line 33 of file OpenGLRendererAPI.cpp.

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

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

• ElevateEngine/src/ElevateEngine/Renderer/OpenGL/OpenGLRendererAPI.h
• ElevateEngine/src/ElevateEngine/Renderer/OpenGL/OpenGLRendererAPI.cpp