ios - opengl中的内存增长

Question

我的绘画应用程序中有更改画笔的代码。一切正常，但我发现，如果我多次调用该方法，内存不会释放，并且会越来越大...而且我找不到它在哪里？

- (void)setBrush:(UIImage *)brush withColor:(UIColor *)color andOpacity:(CGFloat)opacity andSize:(CGFloat)size {
CGImageRef brushImage;
CGContextRef brushContext;
GLubyte *brushData;
size_t width, height;
brushImage = brush.CGImage;
width = CGImageGetWidth(brushImage);
height = CGImageGetHeight(brushImage);
if(brushImage) {
    brushData = (GLubyte *) calloc(width * height * 4, sizeof(GLubyte));
    brushContext = CGBitmapContextCreate(brushData, width, height, 8, width * 4, CGImageGetColorSpace(brushImage), (CGBitmapInfo)kCGImageAlphaPremultipliedFirst);
    CGContextDrawImage(brushContext, CGRectMake(0.0, 0.0, (CGFloat)width, (CGFloat)height), brushImage);
    CGContextRelease(brushContext);
    glGenTextures(1, &brushTexture);
    glBindTexture(GL_TEXTURE_2D, brushTexture);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, brushData);
    free(brushData);
}
CGColorRef clr = [color CGColor];
const CGFloat *components = CGColorGetComponents(clr);
CGFloat red = components[0];
CGFloat green = components[1];
CGFloat blue = components[2];
glColor4f(red * opacity/3, green * opacity/3, blue * opacity/3, opacity/3);
glPointSize(width * size / 2);
}

它可能在哪里，它是如何纠正的？

Answer 1

您永远不会删除使用 glGenTextures() 创建的纹理，因此您只需分配越来越多的空间来容纳所有纹理数据。