textures

I want to load an image (jpg and png) with OpenCV as OpenGL Texture. Here is how I load the image to OpenGL: glEnable(GL_TEXTURE_2D); textureData = loadTextureData("textures/trashbin.png"); cv::Mat image = cv::imread("textures/trashbin.png"); if(image.empty()){ std::cout << "image empty" << std::endl; }else{ glGenTextures( 1, &textureTrash ); glBindTexture( GL_TEXTURE_2D, textureTrash ); glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR); glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR); glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S , GL_REPEAT ); glTexParameterf(

I got texture, which really shorter, than my UIButton. I got this texture: And i should create this button: How should i stretch (not tile), this texture? Stretching in horizontal direction Thnx From the example images you provided I'm pretty sure you're looking for UIImage 's resizableImageWithCapInsets: UIImage *originalImage = [UIImage imageNamed:@"myImage.png"]; UIEdgeInsets insets = UIEdgeInsetsMake(top, left, bottom, right); UIImage *stretchableImage = [originalImage resizableImageWithCapInsets:insets]; [myButton setBackgroundImage:stretchableImage forState:UIControlStateNormal]; // the

Heyy, I want to draw a sprite in my SFML application but its texture is always white when I use an image and a texture that are class members Class members: sf::Sprite myimg; sf::Image myimg_image; sf::Texture myimg_texture; When I then create the sprite like this in my cpp file // create image myimg_image.create(icon.width, icon.height, icon.pixelData); // create texture from image myimg_texture.create(icon.width, icon.height); myimg_texture.update(myimg_image); // apply texture to sprite myimg.setTexture(myimg_texture); It only draws a white sprite when I draw it with window.draw(myimg)

I have a texture-heavy OpenGL game that I'd like to tune based on how much RAM the device has. The highest resolution textures I have work fine on an iPhone 4 or iPad2, but earlier devices crash in the middle of loading the textures. I have low-res versions of these textures, but I need to know when to use them. My current tactic is to detect specific older devices (3GS has a low-res screen; iPad has no camera), then only load the hi-res textures for IPad2 and above and iPhone 4 and above — and I suppose I'll need to do something for the iPod touch. But I'd much rather use feature detection

How do I test if the WebGLTexture object is 'complete' ? Currently I get this message: [WebGLRenderingContext]RENDER WARNING: texture bound to texture unit 0 is not renderable. It maybe non-power-of-2 and have incompatible texture filtering or is not 'texture complete' I get this warning because the render-loop is trying to use the texture before its image has finished loading, so how to fix that? gman The easiest way to fix that is to make a 1x1 texture at creation time. var tex = gl.createTexture(); gl.bindTexture(gl.TEXTURE_2D, tex); gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, 1, 1, 0, gl.RGBA