SLGLFbo Class Reference

#include <SLGLFbo.h>

Public Member Functions
	SLGLFbo (SLuint w, SLuint h, SLenum magFilter=GL_NEAREST, SLenum minFilter=GL_NEAREST, SLint internalFormat=GL_RGB16F, SLint format=GL_FLOAT, SLint wrap=GL_REPEAT)
	~SLGLFbo ()
void	activateAsTexture (int progId, const SLstring &samplerName, int textureUnit=0)

Public Attributes
SLuint	width
SLuint	height
SLuint	attachment
SLuint	fboID
SLuint	texID
SLuint	rboID

Detailed Description

Definition at line 17 of file SLGLFbo.h.

Constructor & Destructor Documentation

SLGLFbo()

SLGLFbo::SLGLFbo	(	SLuint	w,
		SLuint	h,
		SLenum	magFilter = GL_NEAREST,
		SLenum	minFilter = GL_NEAREST,
		SLint	internalFormat = GL_RGB16F,
		SLint	format = GL_FLOAT,
		SLint	wrap = GL_REPEAT
	)

Definition at line 15 of file SLGLFbo.cpp.

                              : width(w), height(h)
{
    GLint previousFrameBuffer;
    glGetIntegerv(GL_FRAMEBUFFER_BINDING, &previousFrameBuffer);
 
    // Init framebuffer.
    glGenFramebuffers(1, &fboID);
    glBindFramebuffer(GL_FRAMEBUFFER, fboID);
 
    glGenTextures(1, &texID);
    glBindTexture(GL_TEXTURE_2D, texID);
 
    // Texture parameters.
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, minFilter);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, magFilter);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, wrap);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, wrap);
 
    glTexImage2D(GL_TEXTURE_2D,
                 0,
                 internalFormat,
                 w,
                 h,
                 0,
                 GL_RGBA,
                 format,
                 nullptr);
 
    glFramebufferTexture2D(GL_FRAMEBUFFER,
                           GL_COLOR_ATTACHMENT0,
                           GL_TEXTURE_2D,
                           texID,
                           0);
 
    glGenRenderbuffers(1, &rboID);
    glBindRenderbuffer(GL_RENDERBUFFER, rboID);
 
    // Use a single rbo for both depth and stencil buffer
    glRenderbufferStorage(GL_RENDERBUFFER,
                          GL_DEPTH_COMPONENT24,
                          w,
                          h);
 
    glFramebufferRenderbuffer(GL_FRAMEBUFFER,
                              GL_DEPTH_ATTACHMENT,
                              GL_RENDERBUFFER,
                              rboID);
 
    glBindRenderbuffer(GL_RENDERBUFFER, 0);
    glBindFramebuffer(GL_FRAMEBUFFER,
                      previousFrameBuffer);
 
    if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE)
        std::cerr << "FBO failed to initialize correctly." << std::endl;
}

~SLGLFbo()

SLGLFbo::~SLGLFbo

(

)

Definition at line 77 of file SLGLFbo.cpp.

{
    glDeleteTextures(1, &texID);
    glDeleteFramebuffers(1, &fboID);
}

Member Function Documentation

activateAsTexture()

void SLGLFbo::activateAsTexture	(	int	progId,
		const SLstring &	samplerName,
		int	textureUnit = 0
	)

Definition at line 83 of file SLGLFbo.cpp.

{
    glActiveTexture(GL_TEXTURE0 + textureUnit);
    glBindTexture(GL_TEXTURE_2D, texID);
    glUniform1i(glGetUniformLocation(progId,
                                     glSamplerName.c_str()),
                textureUnit);
}

Member Data Documentation

attachment

SLuint SLGLFbo::attachment

Definition at line 36 of file SLGLFbo.h.

fboID

SLuint SLGLFbo::fboID

Definition at line 37 of file SLGLFbo.h.

height

SLuint SLGLFbo::height

Definition at line 35 of file SLGLFbo.h.

rboID

SLuint SLGLFbo::rboID

Definition at line 39 of file SLGLFbo.h.

texID

SLuint SLGLFbo::texID

Definition at line 38 of file SLGLFbo.h.

width

SLuint SLGLFbo::width

Definition at line 34 of file SLGLFbo.h.

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

• SLGLFbo.h
• SLGLFbo.cpp