Vesper::OpenGLFramebuffer Class Reference

#include <OpenGLFramebuffer.h>

Inheritance diagram for Vesper::OpenGLFramebuffer:

Public Member Functions
	OpenGLFramebuffer (const FramebufferSpecification &spec)
virtual	~OpenGLFramebuffer ()
void	Invalidate ()
virtual void	Bind () override
virtual void	Unbind () override
virtual void	Resize (uint32_t width, uint32_t height) override
	Resizes the framebuffer to the given width and height.
virtual uint32_t	GetColorAttachmentRendererID () const override
	Returns the renderer ID of the color attachment texture.
virtual const FramebufferSpecification &	GetSpecification () const
	Returns the specification used to create the framebuffer.
Public Member Functions inherited from Vesper::Framebuffer
	~Framebuffer ()=default

Private Attributes
uint32_t	m_RendererID
uint32_t	m_ColorAttachment
uint32_t	m_DepthAttachment
FramebufferSpecification	m_Specification

Additional Inherited Members
Static Public Member Functions inherited from Vesper::Framebuffer
static Ref< Framebuffer >	Create (const FramebufferSpecification &spec)
	Creates a framebuffer with the given specification.

Constructor & Destructor Documentation

OpenGLFramebuffer()

Vesper::OpenGLFramebuffer::OpenGLFramebuffer

(

const FramebufferSpecification &

spec

)

        : m_Specification(spec)
    {
        Invalidate();
    }

References Invalidate(), and m_Specification.

~OpenGLFramebuffer()

Vesper::OpenGLFramebuffer::~OpenGLFramebuffer ( )

virtual

    {
        glDeleteFramebuffers(1, &m_RendererID);
        glDeleteTextures(1, &m_ColorAttachment);
        glDeleteTextures(1, &m_DepthAttachment);
    }

References m_ColorAttachment, m_DepthAttachment, and m_RendererID.

Member Function Documentation

Bind()

void Vesper::OpenGLFramebuffer::Bind ( )

overridevirtual

Implements Vesper::Framebuffer.

    {
        glBindFramebuffer(GL_FRAMEBUFFER, m_RendererID);
        glViewport(0, 0, m_Specification.Width, m_Specification.Height);
    }

References Vesper::FramebufferSpecification::Height, m_Specification, and Vesper::FramebufferSpecification::Width.

GetColorAttachmentRendererID()

virtual uint32_t Vesper::OpenGLFramebuffer::GetColorAttachmentRendererID ( ) const

inlineoverridevirtual

Returns the renderer ID of the color attachment texture.

Implements Vesper::Framebuffer.

{ return m_ColorAttachment; }

References m_ColorAttachment.

GetSpecification()

virtual const FramebufferSpecification & Vesper::OpenGLFramebuffer::GetSpecification ( ) const

inlinevirtual

Returns the specification used to create the framebuffer.

Implements Vesper::Framebuffer.

{ return m_Specification; }

References m_Specification.

Invalidate()

void Vesper::OpenGLFramebuffer::Invalidate

(

)

    {
        if (m_RendererID)
        {
            glDeleteFramebuffers(1, &m_RendererID);
            glDeleteTextures(1, &m_ColorAttachment);
            glDeleteTextures(1, &m_DepthAttachment);
        }
 
        glCreateFramebuffers(1, &m_RendererID);
        glBindFramebuffer(GL_FRAMEBUFFER, m_RendererID);
 
        glCreateTextures(GL_TEXTURE_2D, 1, &m_ColorAttachment);
        glBindTexture(GL_TEXTURE_2D, m_ColorAttachment);
        glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, m_Specification.Width, m_Specification.Height, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 
        glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, m_ColorAttachment, 0);
 
        glCreateTextures(GL_TEXTURE_2D, 1, &m_DepthAttachment);
        glBindTexture(GL_TEXTURE_2D, m_DepthAttachment);
        glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH24_STENCIL8, m_Specification.Width, m_Specification.Height, 0, GL_DEPTH_STENCIL, GL_UNSIGNED_INT_24_8, nullptr);
 
        glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_TEXTURE_2D, m_DepthAttachment, 0);
 
        VZ_CORE_ASSERT(glCheckFramebufferStatus(GL_FRAMEBUFFER) == GL_FRAMEBUFFER_COMPLETE, "Framebuffer is complete!");
 
        glBindFramebuffer(GL_FRAMEBUFFER, 0);
 
    }

References m_ColorAttachment, m_DepthAttachment, and m_RendererID.

Referenced by OpenGLFramebuffer(), and Resize().

Resize()

void Vesper::OpenGLFramebuffer::Resize ( uint32_t width, uint32_t height )

overridevirtual

Resizes the framebuffer to the given width and height.

Implements Vesper::Framebuffer.

    {
        if (width == 0 || height == 0 || width > 8192 || height > 8192)
        {
            VZ_CORE_WARN("Attempted to resize framebuffer to {0}, {1}", width, height);
            return;
        }
        m_Specification.Width = width;
        m_Specification.Height = height;
        Invalidate();
    }

References Vesper::FramebufferSpecification::Height, Invalidate(), m_Specification, and Vesper::FramebufferSpecification::Width.

Unbind()

void Vesper::OpenGLFramebuffer::Unbind ( )

overridevirtual

Implements Vesper::Framebuffer.

    {
        glBindFramebuffer(GL_FRAMEBUFFER, 0);
    }

Member Data Documentation

m_ColorAttachment

uint32_t Vesper::OpenGLFramebuffer::m_ColorAttachment

private

Referenced by GetColorAttachmentRendererID(), Invalidate(), and ~OpenGLFramebuffer().

m_DepthAttachment

uint32_t Vesper::OpenGLFramebuffer::m_DepthAttachment

private

Referenced by Invalidate(), and ~OpenGLFramebuffer().

m_RendererID

uint32_t Vesper::OpenGLFramebuffer::m_RendererID

private

Referenced by Invalidate(), and ~OpenGLFramebuffer().

m_Specification

FramebufferSpecification Vesper::OpenGLFramebuffer::m_Specification

private

Referenced by Bind(), GetSpecification(), OpenGLFramebuffer(), and Resize().

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

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