fbo checkerboard

gistfile1.txt

fbo.allocate(256, 256);
        fbo.begin();
        ofClear(0);
        int step = 16;
        int numRows, numCols;
        numRows = numCols = fbo.getWidth() / step;
        ofColor color1 = ofColor::white;
        ofColor color2= ofColor::black;

        ofColor lastColor = color1;
        
        for (int y = 0; y < numRows; y++)
        {
            for (int x = 0; x < numCols; x++)
            {
                ofSetColor(lastColor);
                ofDrawRectangle(x * step, y * step, step, step);
                if(lastColor == color1)
                {
                    lastColor = color2;
                }else
                {
                    lastColor = color1;
                }
                if (x + 1 == numCols && x % 2 != 0)
                {
                    if(lastColor == color1)
                    {
                        lastColor = color2;
                    }else
                    {
                        lastColor = color1;
                    }
                }
            }
        }

    ofFbo::Settings settings;
    settings.width = 256;
    settings.height = 256;

    settings.textureTarget = GL_TEXTURE_RECTANGLE_ARB;          // GL_TEXTURE_2D or GL_TEXTURE_RECTANGLE_ARB
    settings.internalformat = GL_RGBA;          // GL_RGBA, GL_RGBA16F_ARB, GL_RGBA32F_ARB, GL_LUMINANCE32F_ARB etc.
    settings.depthStencilInternalFormat = GL_DEPTH_STENCIL;     // GL_DEPTH_COMPONENT(16/24/32)
    settings.wrapModeHorizontal = GL_CLAMP_TO_EDGE;     // GL_REPEAT, GL_MIRRORED_REPEAT, GL_CLAMP_TO_EDGE, GL_CLAMP_TO_BORDER etc.
    settings.wrapModeVertical = GL_CLAMP_TO_EDGE;       // GL_REPEAT, GL_MIRRORED_REPEAT, GL_CLAMP_TO_EDGE, GL_CLAMP_TO_BORDER etc.
    settings.minFilter = GL_LINEAR;             // GL_NEAREST, GL_LINEAR etc.
    settings.maxFilter = GL_LINEAR;             // GL_NEAREST, GL_LINEAR etc.
    settings.numSamples=0;              // number of samples for multisampling (set 0 to disable)

if 0

    stringstream info;
    info << "GL_TEXTURE_RECTANGLE_ARB: " << GL_TEXTURE_RECTANGLE_ARB << endl;
    info << "GL_TEXTURE_2D: " << GL_TEXTURE_2D << endl;
    info << "GL_REPEAT: " << GL_REPEAT << endl;
    info << "GL_CLAMP_TO_EDGE: " << GL_CLAMP_TO_EDGE << endl;
    info << "GL_NEAREST: " << GL_NEAREST << endl;
    info << "GL_LINEAR: " << GL_LINEAR << endl;
    info << "GL_RGBA: " << GL_RGBA <<endl;
    ofLogVerbose() << info.str();


textureTarget: GL_TEXTURE_RECTANGLE_ARB
internalformat: GL_RGBA
wrapModeHorizontal: GL_CLAMP_TO_EDGE
minFilter: GL_LINEAR
depthStencilInternalFormat: GL_DEPTH_STENCIL

endif