我有这样的图像：sprite
我正在将纹理(.png文件)加载到我正在使用的视区中

// enable blending
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);

为了去掉黑色的Alpha通道，然而问题是，精灵周围仍然有一条小黑线，我不确定它是否在图像中可见。以下是我对纹理使用的代码：

// generate and bind the texture
unsigned int texture;
glGenTextures(1, &texture);
glBindTexture(GL_TEXTURE_2D, texture);

// configure the texture
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);

// flip the image vertically so texture isn't upside down
stbi_set_flip_vertically_on_load(true);

// load an image while getting the width, height, and number of color channels
int width, height, nrChannels;
unsigned char* data = stbi_load(imageFile, &width, &height, &nrChannels, 0);

// if we have the image
if (data)
{
    // create texture and mipmap for the texture
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, data);
    glGenerateMipmap(GL_TEXTURE_2D);
}
else // we don't have the image
{
    // print
    std::cout << "Failed to load texture" << std::endl;
}
// free the image data and delete it
stbi_image_free(data);