用Python制作Alpha贴图透明遮罩

from PIL import Image
import os
def apply_alpha_to_texture(texture_path, alpha_path, output_path):
    # 打开基础纹理图和Alpha贴图
    texture = Image.open(texture_path).convert("RGBA")  # 确保纹理图有Alpha通道
    alpha = Image.open(alpha_path).convert("L")  # 将Alpha贴图转换为灰度图（L模式）

    # 获取图像的宽度和高度
    width, height = texture.size

    # 逐像素处理
    for x in range(width):
        for y in range(height):
            # 获取Alpha贴图的灰度值（0到255之间）
            alpha_value = alpha.getpixel((x, y))

            # 将灰度值映射为透明度
            texture.putpixel((x, y), texture.getpixel((x, y))[:-1] + (alpha_value,))  # 修改Alpha通道

    # 保存输出结果图像
    texture.save(output_path, "PNG")


basePath = "F:/aaa/bbb"
outBasePath = "F:/aaa/bbb/output"
texture_path = os.path.join(basePath, 'basecolor.png')  # 输入基础纹理图路径
alpha_path = os.path.join(basePath, 'alpha.png')  # 输入Alpha贴图路径
output_path = os.path.join(outBasePath, 'result.png')  # 输出结果图路径

apply_alpha_to_texture(texture_path, alpha_path, output_path)